Abstract

A preparation apparatus for a lithium metal material, comprising a lithium storage tank (1), an extrusion barrel (2), an extrusion mechanism (3), and a frame (5). The lithium storage tank, the extrusion barrel, and the extrusion mechanism are all mounted on the frame. The extrusion barrel is arranged vertically and has an opening facing upwards, the extrusion mechanism is provided with a vertically arranged push rod, the push rod extends into an inner cavity of the extrusion barrel through the opening on the upper end of the extrusion barrel, and a lower end of the push rod is connected to an extrusion plate (301) matched with the inner cavity of the extrusion barrel. An openable and closable lithium material outlet (801) is provided on a bottom plate (8) of the extrusion barrel. A first lithium conveying pipe (16) is mounted at a feeding port of the lithium storage tank, and a discharging port of the lithium storage tank is communicated with a feeding port of the extrusion barrel by means of a second lithium conveying pipe (17). An initial position of the extrusion plate is located above the feeding port of the extrusion barrel. A first gate valve (14) is mounted on the second lithium conveying pipe. Further provided is a preparation method for a lithium metal material using the preparation apparatus. According to the apparatus and the method, an ingot casting process of a metal lithium can be reduced, so that the metal lithium can be effectively prevented from being oxidized or nitrided, the resources are saved, and the efficiency is improved.

IPC Classes  ?

• B21C 27/00 - Containers for metal to be extruded
• B21C 33/02 - Feeding extrusion presses with metal to be extruded the metal being in liquid form
• B21C 23/21 - Presses specially adapted for extruding metal

Abstract

The present invention relates to the technical field of energy storage devices, and provides a spliced lithium ribbon and a method for forming same, for facilitating thickness consistency control and more stable connection between basic lithium ribbons. The method for forming the spliced lithium ribbon comprises: providing at least two basic lithium ribbons; sequentially laying the basic lithium ribbons side by side on the upper surface of a horizontally-arranged bearing layer, so that the basic lithium ribbons and the upper surface of the bearing layer are attached together, and a space is formed between adjacent basic lithium ribbons to form a solder area for the filling of a solder material; and filling the solder area with a molten lithium liquid to solder the basic lithium ribbons into a whole, so as to form the spliced lithium ribbon, wherein a protective gas is provided in the molten lithium liquid filling process, so as to protect the molten lithium liquid and cool and solidify same.

IPC Classes  ?

• H01M 4/1395 - Processes of manufacture of electrodes based on metals, Si or alloys
• H01M 4/134 - Electrodes based on metals, Si or alloys
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/04 - Processes of manufacture in general
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• B23K 37/06 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for positioning the molten material, e.g. confining it to a desired area
• B23K 37/00 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass

Abstract

A preparation method for an intermittent composite strip, the method comprising the following steps: obtaining a transfer strip (9), which comprises a load strip (91) and a first composite strip (92), wherein the first composite strip is intermittently arranged on the load strip; obtaining a second composite strip, wherein the bonding force between the second composite strip and the first composite strip is greater than the bonding force between the first composite strip and the load strip under the same pressure; and bonding, under pressure, the second composite strip with the surface of the transfer strip that is provided with the first composite strip, so as to obtain an intermittent composite strip. By means of the method, the second composite strip can be subjected to a bonding pressure only once, and the second composite strip can be protected against damage to the greatest possible extent, thereby improving the quality and yield of the intermittent composite strip. Further disclosed is an intermittent composite strip prepared through the preparation method, a transfer strip used in the preparation method, and a preparation device and method for the transfer strip.

IPC Classes  ?

• B26D 1/08 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
• B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
• B32B 33/00 - Layered products characterised by particular properties or particular surface features, e.g. particular surface coatingsLayered products designed for particular purposes not covered by another single class
• B26D 7/06 - Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
• B26D 7/01 - Means for holding or positioning work
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries