Packaging shell of solid-state battery

Abstract

The utility model relates to the technical field of packaging shells, and discloses a packaging shell of a solid-state battery, which comprises a bottom plate, a top plate and a stainless steel frame, the bottom plate, the top plate and the stainless steel frame form the shell, the solid-state battery is placed in the shell, and a hard mounting frame is fixedly mounted at the top of the bottom plate. A battery protection plate is fixedly mounted in the center of the top of the bottom plate, the solid-state battery is placed in the battery protection plate, a gap is reserved between the top of the solid-state battery and the bottom of the top plate, and the battery protection plate is arranged to form protection at the bottom of the solid-state battery, so that the risk of puncturing from the bottom is reduced; the anti-expansion assemblies are arranged on the four side faces of the solid-state battery and used for buffering expansion when the solid-state battery expands in the charging process, the situation that the solid-state battery extrudes the inner wall driven by the solid-state battery after expansion is avoided, a gap is reserved between the top plate and the top of the solid-state battery, and the bottom plate and the top plate cannot be jacked open when the solid-state battery expands.

Description

Technical Field

[0001] This utility model relates to the field of packaging shell technology, specifically to a packaging shell for a solid-state battery. Background Technology

[0002] Solid-state batteries refer to lithium batteries that use solid electrolytes instead of liquid electrolytes. Based on the amount of solid electrolyte used, they can be further divided into two main categories: semi-solid-state batteries and all-solid-state batteries: 1) Semi-solid-state batteries: The electrolyte uses a solid-liquid mixture, with the liquid (electrolyte) accounting for about 5-10% of the battery's mass. Essentially, it's a compromise between liquid lithium batteries and all-solid-state batteries. 2) All-solid-state batteries: These use solid electrolytes entirely instead of liquid electrolytes. The battery casing encapsulates the battery and exposes the positive and negative electrodes. Solid-state batteries expand during charging and discharging; therefore, a casing is necessary to counteract this deformation. Utility Model Content

[0003] The purpose of this invention is to provide a packaging shell for a solid-state battery to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A solid-state battery encapsulation shell, comprising a bottom plate, a top plate, and a stainless steel frame, wherein the bottom plate, top plate, and stainless steel frame constitute the shell, and the solid-state battery is placed inside the shell. A rigid mounting bracket is fixedly installed on the top of the bottom plate, and a battery protection plate is fixedly installed at the center of the top of the bottom plate. The solid-state battery is placed inside the battery protection plate, and a gap is left between the top of the solid-state battery and the bottom of the top plate. A gap is left between the battery protection plate and the inner side of the rigid mounting bracket. An anti-expansion component is fixedly installed on the top of the rigid mounting bracket. Multiple anti-expansion components are provided and distributed in the front, back, left, and right directions of the solid-state battery.

[0005] The anti-expansion component includes a rigid bracket, which is fixedly mounted on a rigid mounting frame. A hollow metal block is fixedly installed inside the rigid bracket. One end of the hollow metal block facing the solid-state battery extends out of the rigid bracket, and the outer wall of the hollow metal block contacts the outer wall of the solid-state battery. An arc-shaped elastic metal plate is disposed inside the hollow metal block. The top and bottom ends of the arc-shaped elastic metal plate are fixedly connected to the inner wall of the hollow metal block, and the arc-shaped curved section of the arc-shaped elastic metal plate contacts the inner wall of the hollow metal block. The hollow metal block is made of highly elastic metal.

[0006] Furthermore, a negative terminal and a positive terminal are fixedly installed on the top of the top plate, and a negative electrode plate and a positive electrode plate are fixedly installed on the bottom of the negative terminal. The negative electrode plate is connected to the negative terminal of the solid-state battery through a wire, and the positive electrode plate is connected to the positive terminal of the solid-state battery through a wire. The negative electrode plate is electrically connected to the negative terminal, and the positive electrode plate is electrically connected to the positive terminal.

[0007] Furthermore, a plastic elastic plate is fixedly installed on the rigid mounting bracket, the plastic elastic plate is pressed against the outer wall of the solid-state battery, and the plastic elastic plate on the rigid mounting bracket is arranged in two rows, front and back.

[0008] Furthermore, an insulating rubber pad is fixedly installed at the bottom of the top plate, and the insulating rubber pad presses on the top of the solid-state battery. An exhaust hole is provided on the outer wall of the metal hollow block.

[0009] Furthermore, handles are fixedly mounted on the front and back of the stainless steel frame.

[0010] Furthermore, lifting lugs are fixedly installed on the left and right outer walls of the stainless steel frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. A battery protection plate is set to form a protective layer at the bottom of the solid-state battery to reduce the risk of puncture from the bottom. Anti-expansion components are set on the four sides of the solid-state battery to buffer the expansion during the solid-state battery charging process, so as to prevent the solid-state battery from being squeezed on the inner wall of the solid-state battery after expansion. In addition, there is a gap between the top plate and the top of the solid-state battery so that the bottom plate and the top plate will not be pushed apart when the solid-state battery expands.

[0013] 2. A rigid support is set up to limit and install the hollow metal block. When the solid-state battery expands, it will squeeze the hollow metal block, causing the hollow metal block to deform. The deformation of the hollow metal block buffers the expansion of the solid-state battery. The deformation of the hollow metal block will squeeze the arc-shaped elastic metal plate to deform. After the solid-state battery finishes charging, the solid-state battery shrinks back, and the hollow metal block recovers its deformation. The arc-shaped elastic metal plate can also recover its deformation, further promoting the recovery of the hollow metal block. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Exploded view of the structure;

[0016] Figure 3 This is a schematic diagram of the top plate of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the solid-state battery, rigid mounting bracket, and plastic elastic plate of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the side cross-sectional view of the anti-expansion component of this utility model.

[0019] In the diagram: 1. Base plate; 2. Top plate; 201. Negative terminal; 202. Positive terminal; 203. Negative electrode array; 204. Positive electrode array; 3. Stainless steel frame; 4. Solid-state battery; 5. Rigid mounting bracket; 6. Battery protection plate; 7. Anti-expansion component; 701. Rigid bracket; 702. Hollow metal block; 703. Curved elastic metal plate; 8. Vent hole; 9. Plastic elastic clamping plate; 10. Insulating rubber pad; 11. Handle; 12. Lifting lug. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a solid-state battery encapsulation shell, including a base plate 1, a top plate 2, and a stainless steel frame 3. The base plate 1, top plate 2, and stainless steel frame 3 form the shell. A solid-state battery 4 is placed inside the shell. A rigid mounting bracket 5 is fixedly installed on the top of the base plate 1. A battery protection plate 6 is fixedly installed at the center of the top of the base plate 1. The solid-state battery 4 is placed inside the battery protection plate 6. A gap is left between the top of the solid-state battery 4 and the bottom of the top plate 2. A gap is left between the battery protection plate 6 and the inner side of the rigid mounting bracket 5. The top of the rigid mounting bracket 5... An anti-expansion component 7 is fixedly installed. Multiple anti-expansion components 7 are set and distributed in the front, back, left and right directions of the solid-state battery 4. A battery protection plate 6 is set to form a protective layer at the bottom of the solid-state battery 4 to reduce the risk of puncture from the bottom. Anti-expansion components 7 are set on the four sides of the solid-state battery 4 to buffer the expansion when the solid-state battery 4 expands during charging, so as to prevent the solid-state battery 4 from being squeezed on the inner wall of the solid-state battery 4 after expansion. A gap is left between the top plate 2 and the top of the solid-state battery 4 so that the bottom plate 1 and the top plate 2 will not be pushed apart when the solid-state battery 4 expands.

[0022] The anti-expansion component 7 includes a rigid bracket 701, which is fixedly mounted on a rigid mounting bracket 5. A hollow metal block 702 is fixedly installed inside the rigid bracket 701. One end of the hollow metal block 702 facing the solid-state battery 4 extends out from the rigid bracket 701, and the outer wall of the hollow metal block 702 contacts the outer wall of the solid-state battery 4. An arc-shaped elastic metal plate 703 is disposed inside the hollow metal block 702. The top and bottom ends of the arc-shaped elastic metal plate 703 are fixedly connected to the inner wall of the hollow metal block 702, and the arc-shaped curved section of the arc-shaped elastic metal plate 703 contacts the inner wall of the hollow metal block 702. Made of highly elastic metal (copper-titanium alloy or high-grade stainless steel), a rigid bracket 701 is set to limit and install the hollow metal block 702. When the solid-state battery 4 expands, the solid-state battery 4 will squeeze the hollow metal block 702, causing the hollow metal block 702 to deform. The deformation of the hollow metal block 702 buffers the expansion of the solid-state battery 4. The deformation of the hollow metal block 702 will squeeze the arc-shaped elastic metal plate 703 to deform. After the solid-state battery 4 finishes charging, the solid-state battery 4 shrinks back, and the hollow metal block 702 recovers its deformation. The arc-shaped elastic metal plate 703 can also recover its deformation, further pushing the hollow metal block 702 to recover.

[0023] The top plate 2 is fixedly installed with a negative terminal 201 and a positive terminal 202. The bottom of the negative terminal 201 is fixedly installed with a negative electrode plate 203 and a positive electrode plate 204. The negative electrode plate 203 is connected to the negative terminal of the solid-state battery 4 through a wire. The positive electrode plate 204 is connected to the positive terminal of the bottom plate 1 of the solid-state battery 4 through a wire. The negative electrode plate 203 is electrically connected to the negative terminal 201, and the positive electrode plate 204 is electrically connected to the positive terminal 202.

[0024] A plastic elastic plate 9 is fixedly installed on the rigid mounting bracket 5. The plastic elastic plate 9 presses against the outer wall of the solid-state battery 4. The plastic elastic plate 9 on the rigid mounting bracket 5 is arranged in two rows, front and back. The plastic elastic plate 9 is used to position the solid-state battery 4 when it is placed, and to provide a certain limiting effect to prevent the solid-state battery 4 from shifting its position when it is placed.

[0025] An insulating rubber pad 10 is fixedly installed at the bottom of the top plate 2. The insulating rubber pad 10 presses on the top of the solid-state battery 4. The insulating rubber pad 10 is set to form a buffer between the top plate 2 and the insulating rubber pad 10. When the solid-state battery 4 expands, it will squeeze the insulating rubber pad 10 to deform, rather than directly squeezing the top plate 2. The outer wall of the metal hollow block 702 is provided with an exhaust hole 8 to ensure that the air inside the metal hollow block 702 is discharged and enters during the deformation and recovery process of the metal hollow block 702 under force.

[0026] Handles 11 are fixedly installed on the front and back of the stainless steel frame 3 to facilitate workers to move the outer shell composed of the base plate 1, top plate 2, and stainless steel frame 3.

[0027] Lifting lugs 12 are fixedly installed on the outer walls of the left and right sides of the stainless steel frame 3. The lifting lugs 12 are used to lift the entire battery with solid-state battery 4 using lifting equipment.

[0028] Working principle: In use, separate the top plate 2 from the stainless steel frame 3, and then place the solid-state battery 4 on the battery protection plate 6. During placement, the solid-state battery 4 is guided and positioned by the plastic elastic clamp 9. Then, use wires to connect the negative terminal of the solid-state battery 4 to the negative terminal plate 203, and the positive terminal of the solid-state battery 4 to the positive terminal plate 204, thus fixing the top plate 2 to the stainless steel frame 3. During charging, the solid-state battery 4 expands, which compresses the hollow metal block 702, causing the hollow metal block 702 to deform. The deformation of the hollow metal block 702 buffers the expansion of the solid-state battery 4. The deformation of the hollow metal block 702 also compresses the arc-shaped elastic metal plate 703. After the solid-state battery 4 finishes charging, it retracts, and the hollow metal block 702 recovers its deformation. The arc-shaped elastic metal plate 703 can also recover its deformation, further pushing the hollow metal block 702 to recover and continuing to limit the solid-state battery 4.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A solid-state battery encapsulation casing, comprising a base plate (1), a top plate (2), and a stainless steel frame (3), characterized in that: The base plate (1), top plate (2), and stainless steel frame (3) form an outer shell. The solid battery (4) is placed inside the outer shell. A rigid mounting bracket (5) is fixedly installed on the top of the base plate (1). A battery protection plate (6) is fixedly installed at the center of the top of the base plate (1). The solid battery (4) is placed inside the battery protection plate (6). There is a gap between the top of the solid battery (4) and the bottom of the top plate (2). There is a gap between the battery protection plate (6) and the inner side of the rigid mounting bracket (5). An anti-expansion component (7) is fixedly installed on the top of the rigid mounting bracket (5). Multiple anti-expansion components (7) are provided and distributed in the front, back, left, and right directions of the solid battery (4). The anti-expansion component (7) includes a rigid bracket (701) which is fixedly mounted on a rigid mounting bracket (5). A hollow metal block (702) is fixedly mounted inside the rigid bracket (701). One end of the hollow metal block (702) facing the solid-state battery (4) extends out from the rigid bracket (701), and the outer wall of the hollow metal block (702) contacts the outer wall of the solid-state battery (4). An arc-shaped elastic metal plate (703) is provided inside the hollow metal block (702). The top and bottom ends of the arc-shaped elastic metal plate (703) are fixedly connected to the inner wall of the hollow metal block (702). The arc-shaped curved section of the arc-shaped elastic metal plate (703) contacts the inner wall of the hollow metal block (702). The hollow metal block (702) is made of highly elastic metal.

2. The packaging casing for a solid-state battery according to claim 1, characterized in that: The top plate (2) is fixedly installed with a negative terminal (201) and a positive terminal (202). The bottom of the negative terminal (201) is fixedly installed with a negative electrode plate (203) and a positive electrode plate (204). The negative electrode plate (203) is connected to the negative terminal of the solid-state battery (4) through a wire. The positive electrode plate (204) is connected to the positive terminal of the bottom plate (1) of the solid-state battery (4) through a wire. The negative electrode plate (203) is electrically connected to the negative terminal (201), and the positive electrode plate (204) is electrically connected to the positive terminal (202).

3. The packaging casing for a solid-state battery according to claim 1, characterized in that: A plastic elastic plate (9) is fixedly installed on the rigid mounting bracket (5). The plastic elastic plate (9) presses against the outer wall of the solid-state battery (4), and the plastic elastic plate (9) on the rigid mounting bracket (5) is arranged in two rows, front and back.

4. The packaging casing for a solid-state battery according to claim 1, characterized in that: An insulating rubber pad (10) is fixedly installed at the bottom of the top plate (2), and the insulating rubber pad (10) presses on the top of the solid-state battery (4). An exhaust hole (8) is provided on the outer wall of the metal hollow block (702).

5. The packaging casing for a solid-state battery according to claim 1, characterized in that: Handles (11) are fixedly installed on the front and back of the stainless steel frame (3).

6. The packaging casing for a solid-state battery according to claim 1, characterized in that: The stainless steel frame (3) is fixedly installed with lifting lugs (12) on the left and right outer walls.

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