Metal lithium battery module mounting structure

Abstract

The application discloses a metal lithium battery module installation structure, which comprises a module frame, a plurality of metal lithium batteries in series are placed in the module frame, a battery partition plate is arranged between each metal lithium battery, one side of the battery partition plate is attached to the metal lithium battery, a silica gel buffer pad is attached to the other side of the battery partition plate, a first output copper bar and a second output copper bar are respectively arranged on the metal lithium batteries at two ends in the module frame, and the metal lithium battery module installation structure can make the metal lithium battery generate nonlinear stress change due to battery volume change in the charging and discharging process, ensure that the battery is uniformly stressed, and improve the cycle life of the metal lithium battery working condition.

Description

Technical Field

[0001] This invention relates to the field of battery assembly technology, specifically to a mounting structure for a lithium metal battery module. Background Technology

[0002] Compared to conventional lithium-ion rechargeable batteries, lithium metal batteries exhibit greater volume expansion during charging and discharging. This expansion can cause battery slippage, resulting in uneven stress distribution and severely impacting the cycle life of lithium metal batteries. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a metal lithium battery module mounting structure that can make the nonlinear stress change generated by the battery volume change during the charging and discharging process, and ensure that the battery is subjected to uniform stress, thereby improving the cycle life of the metal lithium battery under operating conditions and effectively solving the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a lithium metal battery module mounting structure, comprising a module frame, wherein the module frame is integrally molded, the upper end of the module frame has an opening, a plurality of lithium metal batteries connected in series are placed inside the module frame, a battery separator is provided between each lithium metal battery, one side of the battery separator is attached to the lithium metal battery, and a silicone buffer pad is attached to the other side of the battery separator, and a first output copper busbar and a second output copper busbar are respectively provided on the lithium metal batteries located at both ends inside the module frame.

[0005] As a preferred embodiment of the present invention, a groove is provided on one side of the battery separator, and the lithium metal battery is adhered in the groove.

[0006] As a preferred embodiment of the present invention, the battery separator is made of PC material.

[0007] As a preferred embodiment of the present invention, a module limiting plate is provided between the lithium metal battery at the end and the inner side of the module frame.

[0008] As a preferred technical solution of the present invention, the upper end of the module frame (5) is symmetrically provided with grooves for installing the module limiting plate.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: The installation structure of this lithium metal battery module is reasonably designed and ingeniously conceived. By setting an integrated module frame to limit the lithium metal battery, the integrated module frame has high strength to resist the expansion force during the charging and discharging process of the battery. By setting a module limiting plate to pre-tighten the battery, it is prevented that the lithium metal battery will slip due to expansion during the charging and discharging process. By setting a battery separator between two adjacent lithium metal batteries, the unevenness caused by the change in the shape and size of the lithium metal batteries is eliminated. By setting a silicone buffer on the other side of the battery separator, the expansion space of the lithium metal battery can be effectively absorbed, so that the lithium metal battery is subjected to uniform force and the cycle life of the lithium metal battery is extended. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention.

[0011] In the diagram: 1 First output copper busbar, 2 Silicone buffer pad, 3 Battery separator, 4 Metal lithium battery, 5 Module frame, 6 Module limiting plate, 7 Second output copper busbar. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments (for ease of description and understanding, the following refers to...). Figure 1 (The above is described above). Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0013] Please see Figure 1 The present invention provides a technical solution: a metal lithium battery module installation structure, including a module frame 5, the module frame 5 is integrally molded, the upper end of the module frame 5 has an opening, and multiple metal lithium batteries 4 are placed in series inside the module frame 5. In this embodiment, the metal lithium batteries are placed in the module frame 5 in a configuration of two parallel and ten series.

[0014] A battery separator 3 is provided between two adjacent lithium metal batteries 4. One side of the battery separator 3 is attached to the lithium metal battery 4, and a 1mm thick silicone buffer pad 2 is attached to the other side of the battery separator 3. The silicone buffer pad 2 can absorb the expansion space of the lithium metal battery 4. The 1mm silicone buffer pad 2 can be compressed by 80%, that is, 0.8mm. The expansion range of each lithium metal battery 4 is 7~10%, which meets the expansion space absorption requirements.

[0015] The first output copper busbar 1 and the second output copper busbar 7 are respectively provided on the metal lithium battery 4 located at both ends of the module frame 5.

[0016] To eliminate unevenness caused by changes in shape and size during the stacking of lithium metal batteries 4, a groove is provided on one side of the battery separator 3, and the lithium metal batteries 4 are bonded in the groove. The battery separator 3 is made of PC material.

[0017] To increase the preload force after the lithium metal battery is installed, a module limiting plate 6 is provided between the lithium metal battery 4 at the end and the inner side of the module frame 5. A groove 8 is symmetrically provided on one side of the upper end of the module frame 5 for installing the module limiting plate 6. Under the action of the module frame 5 and the module limiting plate 6, a preload force of more than 1MPa can be provided to the lithium metal battery.

[0018] To enhance resistance to the expansion force of the lithium metal battery 4, the module frame 5 is integrally molded, resulting in higher strength.

[0019] In use: The lithium metal batteries 4 are placed into the module frame 5 in sequence. Each lithium metal battery 4 is placed in the groove of the battery separator 3. The other side of the lithium metal battery 4 is attached to the silicone buffer pad 2. After the lithium metal batteries 4 are stacked into the module frame 5, they are pre-tightened by placing the module limiting plate 6 to ensure that the lithium metal batteries 4 have a constant spacing during the working cycle.

[0020] This invention can adapt to the nonlinear stress changes caused by the volume change of the battery during the charging and discharging process of the lithium metal battery, and ensure that the battery is subjected to uniform stress, thereby improving the cycle life of the lithium metal battery under operating conditions.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mounting structure for a lithium metal battery module, characterized in that: The module includes a module frame (5), which is integrally molded. The upper end of the module frame (5) has an opening. Multiple series-connected lithium metal batteries (4) are placed inside the module frame (5). A battery separator (3) is provided between each lithium metal battery (4). One side of the battery separator (3) is attached to the lithium metal battery (4), and a silicone buffer pad (2) is attached to the other side of the battery separator (3). A first output copper busbar (1) and a second output copper busbar (7) are respectively provided on the lithium metal batteries (4) at both ends inside the module frame (5).

2. The mounting structure for a lithium metal battery module according to claim 1, characterized in that: A groove is provided on one side of the battery separator (3), and the lithium metal battery (4) is bonded in the groove.

3. The mounting structure for a lithium metal battery module according to claim 1, characterized in that: The battery separator (3) is made of PC material.

4. The mounting structure for a lithium metal battery module according to claim 1, characterized in that: A module limiting plate (6) is provided between the end of the lithium metal battery (4) and the inner side of the module frame (5).

5. The mounting structure for a lithium metal battery module according to claim 4, characterized in that: The module frame (5) has symmetrically arranged grooves (8) on one side of its upper end for installing module limiting plates (6).

Images