G06Q 10/30 - Administration of product recycling or disposal
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
Provided is a diagnosis device for an on-vehicle secondary battery, whereby a state of degradation of an on-vehicle secondary battery can be diagnosed even when direct information identifying the type and configuration of the secondary battery cannot be obtained. This diagnosis device for an on-vehicle secondary battery comprises a storage element that stores a secondary battery database in which the model of the vehicle and nominal battery capacity of the secondary battery, and the type of the secondary battery are associated, and correlation data that indicate a correlation among voltage, current, and temperature values and states of degradation of the secondary battery for each type of secondary battery, an acquisition processing element referring to the secondary battery database to acquire the type of the secondary battery on the basis of the model of the vehicle and the nominal battery capacity of the secondary battery mounted to the vehicle, and acquire the voltage, current, and temperature values occurring during charging or discharging of the secondary battery, and a determination processing element using the correlation data corresponding to the type of the secondary battery to determine the state of degradation of the secondary battery on the basis of the secondary battery voltage, current, and temperature values.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A power conversion and control unit 2 of this activation system 1 of a secondary battery 30, when a discharge step is being executed by one or more activation device units 10 and a voltage Vbat of a power storage unit 3 is a prescribed upper limit value V_H or lower, executes a first control to charge the power storage unit 3 with the power released from the activation device unit 10, and when a charging step is being executed by one or more activation device units 10 and the voltage Vbat is a prescribed lower limit value V_L or higher, executes a second control to supply the power of the power storage unit 3 to the activation device unit 10 that is executing the charging step.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
B60W 20/00 - Control systems specially adapted for hybrid vehicles
G06Q 10/30 - Administration of product recycling or disposal
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
The present invention provides a secondary battery capacity estimation system that enables the efficient estimation of the capacity of a secondary battery from the state of the internal resistance of that secondary battery even when the usage history of the secondary battery is different. This system estimates the capacity of a secondary battery, and comprises: a target secondary battery information acquisition unit that acquires target secondary battery information; a group determination unit that determines a trend group of a target secondary battery by inputting the usage history of the target secondary battery and internal resistance value increase information included in the target secondary battery information into a classification model; and a capacity estimation unit that estimates a capacity index value of the target secondary battery on the basis of the target secondary battery information and correlation information corresponding to the trend group. The classification model is a trained model that has undergone machine learning using sample secondary battery information as learning data, and the classification model is configured to output the trend group to which the target secondary battery corresponds when the target secondary battery information is input.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A battery test device 1 according to the present invention is provided with: a sealed battery holder 4 in which a secondary battery 3 is contained in a freely attachable and detachable manner; a constant-temperature bath 2 in which the battery holder 4 is contained; and a charge/discharge test device 7 which tests the secondary battery 3 contained in the battery holder 4 by charging and discharging the secondary battery 3. The battery holder 4 is composed of a fire-resistant pressure-resistant container that is capable of withstanding the ignition of the secondary battery 3; and since a discharge port 4b is connected to a discharge pipe 15 which discharges a gas within the battery holder 4 when the secondary battery 3 is ignited, the gas is discharged to the outside of the constant-temperature bath 2, thereby releasing the pressure.
Provided is a device, etc., with which it is possible to improve the accuracy with which the performance of a secondary battery is evaluated, in consideration of a change in the state of the battery capacity of the secondary battery. In the present invention, a first degree of deterioration is evaluated on the basis of a first initial index value and a first current index value. The first initial index value corresponds to an initial battery capacity difference ?Q (0?k) of a subject secondary battery at each of a start time t=t1 and an end time t=t2 in a designation period that includes a period [t1, t2] in which a current I flows int he subject secondary battery. The initial battery capacity difference ?Q (0?k) of the subject secondary battery is derived, as an output of a first initial characteristic model, through open-circuit voltages VOC2 and VOC1 of the subject secondary battery at each of the start time and the end time in the designation period being inputted to the initial characteristic model. The degree of deterioration of the subject secondary battery is evaluated according to the ratio of a current battery capacity difference ?Q' of the subject battery at each of the start time and the end time of the designation period and the initial battery capacity difference ?Q (0?k) of the subject secondary battery.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
9.
BATTERY TEST DEVICE AND BATTERY CHARGE TESTING METHOD
There is provided a battery test device capable of executing, with high accuracy, battery charge control and control to maintain a voltage between terminals of a battery in constant current/constant voltage control in a charge test mode. In the constant current/constant voltage control in the charge test mode, constant current charge control for supplying a charging current of a set current value to the battery by duty-ratio control for a full-bridge circuit is executed, and when the voltage between the terminals of the battery rises up to a set voltage value during the constant current charge control, the constant current charge control is stopped and constant voltage charge control for supplying the charging current to the battery to maintain the voltage between the terminals at the set voltage value is executed, when the charging current drops up to 0 [A] during the constant voltage charge control, the constant voltage charge control is stopped and zero amp control for maintaining the charging current at 0 [A] is executed, and when the voltage between the terminals rises above the set voltage value during the zero amp control, the zero amp control is stopped and minute discharge control for making a minute discharging current flow out of the battery is executed.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/10 - Regulation of the charging current or voltage using discharge tubes or semiconductor devices using semiconductor devices only
10.
BATTERY CHARGE/DISCHARGE TESTING DEVICE AND BATTERY DISCHARGE POWER CONTROL METHOD
The battery charge/discharge testing device includes a sub-charge/discharge unit connected to a main charge/discharge unit through bus lines, wherein when an output voltage of a built-in battery in the sub-charge/discharge unit is in a voltage range capable of supplying power, sub-power supply control is executed to supply discharge power of a built-in battery between the bus lines through a full-bridge circuit in a sub-DC/DC conversion unit by duty-ratio controlling ON/OFF of switching elements of the full-bridge circuit so that the voltage between the bus lines becomes a first predetermined voltage value. When the voltage exceeds the first predetermined voltage value during the sub-power supply control, the control is stopped, and constant current charge control is executed to charge the built-in battery through the full-bridge circuit by using, as a power supply, discharge power of the test battery supplied between the bus lines by duty-ratio controlling ON/OFF of the switching elements.
H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
11.
BATTERY STATE DETERMINATION METHOD AND BATTERY STATE DETERMINATION DEVICE
There is provided a device or the like, capable of the evaluation accuracy of the degree of deterioration of a secondary battery by executing regression analysis processing using, as a target variable, the degree of deterioration of the secondary battery. Multiple regression analysis is executed by using, as explanatory variables, respective values of plural model parameters that define a secondary battery model based on a measurement result of complex impedance Z of each reference secondary battery 220, and a degree of deterioration D(q1) evaluated according to the secondary battery model as a target variable. Then, a degree of deterioration D(q2) of a target secondary battery 420 is evaluated according to a multiple regression equation obtained as a result of the multiple regression analysis.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
12.
BATTERY PERFORMANCE EVALUATION DEVICE AND BATTERY PERFORMANCE EVALUATION METHOD
Provided are a device and the like capable of evaluating the performance of a secondary battery while reducing a calculation processing load required for identifying the values of model parameters for defining a model used for evaluating the performance of the secondary battery. According to satisfying or unsatisfying a designated condition, a different battery model is determined as a battery model used for evaluating the performance of a target secondary battery. Specifically, when the designated condition is satisfied, a second battery model is determined that is defined by a smaller number of second model parameters than a plurality of first model parameters and thereby is a simpler battery model than a first battery model defined by the plurality of first model parameters (which is a battery model determined when the designated condition is not satisfied).
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
A charge and discharge testing device capable of evaluating highly accurate charge and discharge characteristics for a high output type or a low output type secondary battery is provided. The present invention includes a bridge circuit including first and second switch elements connected in tandem at a first connection point, and third and fourth switch elements connected in tandem at a second connection point, and a control unit which when a mode signal indicates a first mode, controls the first to fourth switch elements so that the first and fourth switch elements and the second and third switch elements are alternately turned on and off, and when the mode signal indicates a second mode, controls the third switch element to be an off state and the fourth switch element to be an on state, and applies analog output control to vertically change a current made to flow due to an analog voltage in which a voltage greater than or equal to a gate threshold voltage changes up and down, to the first switch element during charge control and the second switch element in charging.
G01R 31/36 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
G05F 1/56 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
14.
BATTERY LEASE SYSTEM UTILIZING DEGRADATION PREDICTION AND USAGE HISTORY
Provided is a battery lease system which can rationalize the burden of a user when using a battery and encourage the user to purchase an electric vehicle or the like effectively. The battery lease system accepts input of estimation basic information, estimates an estimated degradation state at the expiration of a scheduled lease term, determines a first lease fee of the battery, accepts input of information indicating that a first lease is started, and stores the information in a storage unit. Then, the battery lease system acquires battery information required to determine a degradation state of the battery returned after the expiration of the first lease of the battery, determines a degradation state of the returned battery, and redetermines a first lease fee based on the estimated degradation state and the degradation state of the returned battery.
B60L 53/80 - Exchanging energy storage elements, e.g. removable batteries
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
G06Q 30/06 - Buying, selling or leasing transactions
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
15.
USED BATTERY UNIT HOLDER, AND USED BATTERY UNIT STORAGE SYSTEM
Provided are a used battery unit holder and a used battery unit storage system capable of easily storing and transporting used battery units from various manufacturers while suppressing the deterioration of the used battery units during storage. The used battery unit holder is detachably attachable to a storage device for storing multiple used battery units, including: a connection unit for connecting a used battery unit held in the holder through a circuit included in the storage device in such a manner that the used battery unit can be charged and discharged; a battery status recognition unit which recognizes the battery status of the used battery unit; a charge/discharge instruction acquisition unit which acquires charge/discharge instruction information; and a charge/discharge management unit which discharges from a discharge-target battery unit and charges a charge-target battery unit in a manner to fall within a predetermined SOC range according to the charge/discharge instruction information.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
16.
SECONDARY BATTERY INSPECTION METHOD AND SECONDARY BATTERY INSPECTION DEVICE
Provided is a secondary cell inspection device with which it is possible to improve inspection accuracy of a secondary cell while also simplifying the inspection thereof. A model parameter value of a secondary cell model is identified on the basis of a sampling rate T. The secondary cell model expresses internal resistance impedance for a secondary cell 200 using an IIR transfer function and a FIR transfer function. A model output voltage is estimated as a mode of voltage variation outputted from an assignment model when an impulse current (t) is inputted to said assignment model, which is the secondary cell model in which the model parameter value is identified. On the basis of a voltage measurement result for the secondary cell 200 when the impulse current I(t) flows through said secondary cell 200, and on the basis of the assignment model output voltage, the performance of the secondary cell 200 based on the sampling rate T is assessed.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
Provided is a used battery unit depository enabling economical storage of a plurality of used battery units, while also curbing degradation during storage of used battery units of a variety of different manufacturers. This used battery unit depository is provided with: a selection unit for selecting a battery unit to be discharged and a battery unit to be charged from a plurality of used battery units being stored, on the basis of current values and voltage values of the plurality of used battery units as well as predetermined SOC ranges of the respective used battery units; and a charge/discharge control unit for discharging the battery unit to be discharged and for charging the battery unit to be charged, with the discharged power, so that the SOC of the battery unit to be discharged and of the battery unit to be charged fall within the predetermined SOC range.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
Provided is a system that can reduce the transportation cost of a used secondary battery and sell the used secondary battery inexpensively. A used secondary battery reuse system supports reuse of a used secondary battery used as a secondary battery for vehicle driving, and includes: a purchase request information reception unit configured to receive purchase request information for a used secondary battery; a trade-in request information reception unit configured to receive trade-in request information including information indicating a degradation state of a secondary battery mounted on a vehicle; an extraction unit configured to extract the purchase request information including an intended use of the used secondary battery that matches the degradation state included in the trade-in request information; a sale price determination unit configured to determine a sale price of the secondary battery to be traded in; a transportation cost estimation unit configured to estimate a transportation cost of the secondary battery to be traded in from each trade-in facility to a delivery site; and a trade-in price determination unit configured to determine a trade-in price in each trade-in facility based on the sale price and the transportation cost of the secondary battery to be traded in.
Provided is a battery recycling support system capable of efficiently supporting recycling of a battery by determining a battery application. The battery recycling support system is provided with: a recognition part for recognizing a deterioration state of a battery; a storage unit storing application information, that is information indicating battery applications corresponding to deterioration states of the batteries; a determination part for determining an application of a battery on the basis of the deterioration state of the battery and the application information; and an output unit for outputting the determination result of the determination part.
G06Q 30/06 - Buying, selling or leasing transactions
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
Provided is a device and the like capable of improving the convenience in performance evaluation of a secondary battery. Performance of a secondary battery 240 installed in an electronic apparatus 200 is evaluated by a battery performance evaluation device 100 on the basis of mutual communication between the electronic apparatus 200 and/or a charger 400 to which the electronic apparatus 200 is connected and the battery performance evaluation device 100. Next, battery performance information Info (D) corresponding to the evaluation result is output to an output interface 204 of the electronic apparatus 200. Thus, because a user can ascertain the performance evaluation result of the secondary battery 240 without the need to take the electronic apparatus 200 or the secondary battery 240 to a specialized institution or the like, the convenience for the user of the electronic apparatus 200 is improved.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
21.
SIMULATED BATTERY CONTROL DEVICE, ELECTRONIC APPARATUS, CHARGER, AND SIMULATED BATTERY CONTROL METHOD
There is provided a device or the like capable of improving the convenience of reproduction under various conditions of the characteristics of a secondary battery by using a simulated battery. Based on the communication between the electronic apparatus 200 and/or the charger 400 coupled to the electronic apparatus 200, and the simulated battery control device, the operation of the simulated battery 230 mounted on the electronic apparatus 200 is controlled, and the voltage corresponding to the current command value is applied to the specified load 250. Then, the operating characteristic information corresponding to the operating characteristic of the specified load 250 corresponding to the applied voltage is output to the output interface 204 of the electronic apparatus 200. Therefore, the user does not need to bring the electronic apparatus 200 to a specialized institution or the like, and the operating characteristics of the specified load 250 can be grasped when voltage corresponding to the current command value is applied to the specified load 250 of the electronic apparatus 200, and therefore the convenience of the user of the electronic apparatus 200 can be improved.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
22.
SIMULATED BATTERY CONSTRUCTION METHOD AND SIMULATED BATTERY CONSTRUCTION DEVICE
Provided is a device that aims to improve the reproduction precision, of a simulated battery, for secondary battery characteristics under a variety of conditions. Parameters (n0, n1, n2) are stipulated for a secondary battery model, for each different temperature T (n1), for each different degree of deterioration D (n2). Values for the parameters (n0, n1, n2) are identified for the secondary battery model, on the basis of measurement results for complex impedance Z for a secondary battery 220. The secondary battery model expresses internal resistance impedance for the secondary battery 220, using transfer functions indicating an IIR system and an FIR system, respectively. In addition, a voltage command value Vcmd (t) is calculated for when a current command value Icmd (t) is entered to the secondary battery model, in accordance with an identifier ID (m), a temperature T (m1), and a deterioration D (m2) for a virtual secondary battery simulated using a simulated battery 20; and a voltage V (t) corresponding to the voltage command value Vcmd (t) is applied to a specified device 200 or its load, by the simulated battery 20.
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
23.
BATTERY PERFORMANCE EVALUATION METHOD AND BATTERY PERFORMANCE EVALUATION DEVICE
The present invention provides a device and the like with which it is possible to improve the accuracy of battery performance evaluation of a secondary battery. On the basis of the measurement result of a complex impedance Z of a first secondary battery 221, parameter values of a secondary battery model are identified. In the secondary battery model, the impedance of internal resistance of the first secondary battery 221 is represented by transfer functions respectively indicating an IIR system and an FIR system. Further, on the basis of the result of a comparison between a voltage response characteristic V(t) outputted from a second secondary battery 222 when an impulse current I(t) is inputted to a secondary battery 220 serving as the second secondary battery 222, and a model voltage response characteristic Vmodel when the impulse current is inputted to the secondary battery model the parameter values of which have been identified, the performance of the second secondary battery 222 is evaluated.
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Provided is a secondary battery state output system capable of outputting the deterioration state of a secondary battery in a timely manner, the deterioration state including contents satisfactory to a user. A state output system according to the present invention outputs the deterioration state of a secondary battery mounted on a user device used by a user, and is provided with an output unit that, when the most recent deterioration state of the secondary battery has been determined as deviating from a tendency, determines a detailed deterioration state indicating the detailed deterioration state of the secondary battery on the basis of information indicating how the secondary battery had been used until the most recent time point, and outputs the most recent deterioration state and the detailed deterioration state.
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
Provided is a battery residual value determination system that can easily and accurately determine a battery residual value. This battery residual value determination system is provided with: a battery information reception unit that receives information about the voltage, the current, the temperature of a battery, and a period elapsed from the manufacturing time of the battery; a first residual value determination unit that determines a first residual value indicating the SOH of the battery; an attenuation function determination unit that determines an attenuation function which indicates a battery-specific time-dependent change of the SOH and which is used for correcting the first residual value; and a second residual value output unit that determines and outputs a second residual value obtained by correcting the first residual value using the attenuation function in accordance with the period elapsed from the manufacturing time of the battery.
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
There is provided a battery residual value display device that can display an accurate residual value of a battery to a user in an easy-to-understand manner. The battery residual value display device includes: a battery information receiving module; an attenuation function determining module; a second residual value determining module; a graph output module configured to output a graph of which one axis indicates residual values of a battery and another axis indicates information on an elapsed time from a time of manufacture of the battery; and a display unit. The graph output module is configured to output: in the graph, a display indicating a first residual value; a display indicating boundaries between a plurality of residual value ranks obtained by dividing the residual values in accordance with a level of a second residual value; and a display indicating boundaries between a plurality of groups, indicating types of applications in which the battery can be used, obtained by dividing the plurality of residual value ranks in accordance with the level of the second residual value.
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
27.
DEGRADATION STATE DETERMINATION DEVICE AND DEGRADATION STATE DETERMINATION METHOD
The present invention provides a device or the like which is capable of determining a degradation state of a secondary battery, even when an initial measurement result for characteristic parameters of the secondary battery itself, which is a target, is not available. An initial characteristic estimation value p1(0?k) of a first characteristic parameter is calculated as an output of an initial characteristic model by inputting, to the initial characteristic model, the present measurement value p(k) of each of characteristic parameters p that indicate characteristics of a secondary battery 220. A first index value F1(i), which indicates the present state of the target, is calculated on the basis of the present time series P1(i) of the measurement value p1(k) of the first characteristic parameter. A second index value F2(i), which indicates a past state of the target, is calculated on the basis of the present time series P1(0?k,i) of the initial characteristic estimation value p1(0?k) of the first characteristic parameter. A degradation state of the target is determined on the basis of the first index value F1(i) and the second index value F2(i).
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
patents
