Safety protection device of all-solid-state lithium battery

Abstract

The utility model relates to the technical field of all-solid-state lithium batteries, and particularly discloses a safety protection device of an all-solid-state lithium battery, which comprises a shell, a frame-shaped water tank is arranged in the shell, a semiconductor chilling plate is arranged in the frame-shaped water tank, and the all-solid-state lithium battery extends into the frame-shaped water tank. An elastic structure is installed between the all-solid-state lithium battery and the frame-shaped water tank, in the storage or transportation process of the all-solid-state lithium battery, the all-solid-state lithium battery is placed in the frame-shaped water tank in the shell, the ejector block is made to abut against the all-solid-state lithium battery through the elasticity of the spring in the groove above the square block, the all-solid-state lithium battery is limited in the frame-shaped water tank, and therefore the all-solid-state lithium battery can be stored or transported. All-solid-state lithium batteries with different thicknesses can be fixed through the elasticity of the spring, and the semiconductor chilling plate refrigerates water in the frame-shaped water tank, so that the all-solid-state lithium batteries can be protected at low temperature, and the all-solid-state lithium batteries are prevented from high-temperature explosion due to temperature influence.

Description

Technical Field

[0001] This utility model relates to the field of all-solid-state lithium batteries, specifically a safety protection device for all-solid-state lithium batteries. Background Technology

[0002] The basic structure of an all-solid-state lithium battery includes a positive electrode, a solid electrolyte, a negative electrode, and a current collector. The separator and electrolyte are replaced by a solid electrolyte. An electrochemical interface is formed at the electrode-electrolyte interface of an all-solid-state lithium battery. At this interface, charge transfer occurs, causing lithium ions to move between the positive and negative electrodes, completing the charging and discharging process.

[0003] However, during storage or transportation, the temperature and other factors can cause all-solid-state lithium batteries to reach high temperatures, posing a risk of explosion. Utility Model Content

[0004] The purpose of this invention is to provide a safety protection device for all-solid-state lithium batteries, in order to solve the problem mentioned in the background art that the all-solid-state lithium batteries may reach high temperatures and explode due to factors such as temperature during storage or transportation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety protection device for an all-solid-state lithium battery, comprising a housing, a frame-shaped water tank installed inside the housing, a semiconductor cooling chip installed inside the frame-shaped water tank, an all-solid-state lithium battery extending into the frame-shaped water tank, and an elastic structure installed between the all-solid-state lithium battery and the frame-shaped water tank.

[0006] The number of elastic structures is four, and the elastic structures are distributed on the four sides of the all-solid-state lithium battery and the frame-shaped water tank. The elastic structure includes a block, a square groove, a top block and a spring.

[0007] The block is installed inside the frame-shaped water tank, the square groove is opened on the block, the top block is placed in the square groove, the spring is installed between the square groove and the top block, and the top block rests on the all-solid-state lithium battery.

[0008] Preferably, the outer casing is covered with a cover plate, and a rubber plate is installed on the cover plate, the rubber plate being inserted into the outer casing.

[0009] Preferably, the cover plate is fixed to the outer shell by a snap-fit ​​structure. There are two snap-fit ​​structures, which are symmetrically distributed on both sides with the center line of the cover plate as the center. Each snap-fit ​​structure includes a snap block and a snap groove.

[0010] The card block is installed on the cover plate, the card slot is opened on the outer shell, and the card block is engaged in the card slot.

[0011] Preferably, an elastic element is installed inside the card block, and the elastic element corresponds one-to-one with the card block.

[0012] Preferably, the frame-shaped water tank is limited within the outer shell by a limiting structure. There are two limiting structures, which are symmetrically distributed on both sides with the center line of the frame-shaped water tank as the center. Each limiting structure includes a limiting plate and a limiting groove.

[0013] The limiting plate is installed outside the frame-shaped water tank, the limiting groove is opened inside the outer shell, and the limiting plate is snapped into the limiting groove.

[0014] Preferably, the frame-shaped water tank has a water storage port, a water storage pipe is installed inside the water storage port, and a threaded cap is fitted inside the water storage pipe.

[0015] Preferably, a storage battery is installed outside the frame-shaped water tank, and the storage battery is electrically connected to a semiconductor cooling chip through internal wires.

[0016] Preferably, the threaded cap has a hexagonal hole.

[0017] This utility model has at least the following beneficial effects:

[0018] During the storage or transportation of all-solid-state lithium batteries, the all-solid-state lithium batteries are placed inside a frame-shaped water tank within the casing. The top block, through the elasticity of the spring in the slot above the block, presses against the all-solid-state lithium batteries, thus confining the all-solid-state lithium batteries within the frame-shaped water tank. The elasticity of the spring can also fix all-solid-state lithium batteries of different thicknesses. Meanwhile, the semiconductor cooling chip cools the water inside the frame-shaped water tank, providing low-temperature protection for the all-solid-state lithium batteries and preventing them from exploding due to high temperatures. Attached Figure Description

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the block, groove and top block structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the water storage pipe, threaded cap, and hexagonal hole structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the card block, card slot, and elastic element structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the frame-shaped water tank and limiting plate structure of this utility model.

[0024] In the diagram: 1. Outer shell; 2. Frame-shaped water tank; 3. Semiconductor cooling chip; 4. Elastic structure; 401. Block; 402. Square groove; 403. Top block; 404. Spring; 5. All-solid-state lithium battery; 6. Battery; 7. Limiting structure; 8. Limiting plate; 9. Limiting groove; 10. Water inlet; 11. Water pipe; 12. Threaded cap; 13. Hexagonal hole; 14. Cover plate; 15. Rubber plate; 16. Snap-fit ​​structure; 17. Clip; 18. Slot; 19. Elastic component. Detailed Implementation

[0025] Please see Figure 1-Figure 5 This utility model provides a technical solution for a safety protection device for an all-solid-state lithium battery: A safety protection device for an all-solid-state lithium battery includes a shell 1, a frame-shaped water tank 2 installed inside the shell 1, a water-permeable interlayer in the middle of the frame-shaped water tank 2, a semiconductor cooling chip 3 installed inside the frame-shaped water tank 2, the semiconductor cooling chip 3 being selected with a cooling degree of 1-2 degrees, an all-solid-state lithium battery 5 extending into the frame-shaped water tank 2, and an elastic structure 4 installed between the all-solid-state lithium battery 5 and the frame-shaped water tank 2;

[0026] There are four elastic structures 4, which are distributed on the four sides of the all-solid-state lithium battery 5 and the frame-shaped water tank 2. The elastic structure 4 includes a block 401, a square groove 402, a top block 403 and a spring 404.

[0027] A block 401 is installed inside the frame-shaped water tank 2. A square groove 402 is formed on the block 401. A top block 403 is placed inside the square groove 402. The top block 403 is made of a steel block with an outer rubber coating. The top block 403 fits tightly with the square groove 402. A spring 404 is installed between the square groove 402 and the top block 403. The top block 403 rests on the all-solid-state lithium battery 5. During the storage or transportation of the all-solid-state lithium battery 5, the all-solid-state lithium battery 5 is placed inside the frame-shaped water tank 2 inside the outer shell 1. The top block 403, through the elasticity of the spring 404 in the groove 402 above the block 401, rests on the all-solid-state lithium battery 5, thus limiting the all-solid-state lithium battery 5 within the frame-shaped water tank 2. The elasticity of the spring 404 can also fix all-solid-state lithium batteries 5 of different thicknesses. The semiconductor cooling chip 3 cools the water in the frame-shaped water tank 2, which can protect the all-solid-state lithium battery 5 from low temperature and prevent the all-solid-state lithium battery 5 from exploding due to high temperature.

[0028] The outer shell 1 is covered with a cover plate 14, and a rubber plate 15 is installed on the cover plate 14. The rubber plate 15 is inserted into the outer shell 1. The cover plate 14 is limited on the outer shell 1 by a snap-fit ​​structure 16. There are two snap-fit ​​structures 16, which are symmetrically distributed on both sides with the center line of the cover plate 14 as the center. The snap-fit ​​structure 16 includes a snap-fit ​​block 17 and a snap-fit ​​groove 18.

[0029] The locking block 17 is installed on the cover plate 14, and the locking slot 18 is opened on the outer shell 1. The locking block 17 is engaged in the locking slot 18. An elastic element 19 is installed in the locking block 17. Both the locking block 17 and the elastic element 19 are made of steel sheet. The elastic element 19 enhances the elasticity of the locking block 17. The elastic element 19 corresponds one-to-one with the locking block 17. The cover plate 14 covers the opening on the outer shell 1, and the rubber plate 15 is inserted into the opening on the outer shell 1. The locking block 17 is engaged in the locking slot 18, so that the cover plate 14 closes the outer shell 1. Flipping it can open the outer shell 1, making it easy to take out the all-solid-state lithium battery 5.

[0030] The frame-shaped water tank 2 is limited within the outer shell 1 by limiting structures 7. There are two limiting structures 7, which are symmetrically distributed on both sides with the center line of the frame-shaped water tank 2 as the center. The limiting structure 7 includes a limiting plate 8 and a limiting groove 9.

[0031] The limiting plate 8 is installed outside the frame-shaped water tank 2. The length of the limiting plate 8 is the same as that of the frame-shaped water tank 2, while the length of the frame-shaped water tank 2 is smaller than that of the outer shell 1. The limiting groove 9 is opened inside the outer shell 1. The limiting plate 8 is snapped into the limiting groove 9. When the frame-shaped water tank 2 is placed into the outer shell 1, the limiting plate 8 slides into the limiting groove 9, so that the frame-shaped water tank 2 is installed inside the outer shell 1.

[0032] The frame-shaped water tank 2 has a water inlet 10, and a water storage pipe 11 is installed inside the water inlet 10. The water storage pipe 11 has internal threads, and a threaded cap 12 is fitted inside the water storage pipe 11. The threaded cap 12 has a hexagonal hole 13. External water is discharged into the frame-shaped water tank 2 through the water storage pipe 11. An external wrench is inserted into the hexagonal hole 13 to screw the threaded cap 12 into the water storage pipe 11.

[0033] A battery 6 is installed outside the frame-shaped water tank 2. The battery 6 is electrically connected to the semiconductor cooling chip 3 through internal wires. The internal wires pass through the holes on the frame-shaped water tank 2 and seal the holes.

[0034] When using the safety protection device for this all-solid-state lithium battery, firstly, external water is manually drained into the frame-shaped water tank 2 through the water storage pipe 11. An external wrench is then inserted into the hexagonal hole 13 to screw the threaded cap 12 into the water storage pipe 11. The frame-shaped water tank 2 is then placed inside the outer casing 1, and the limiting plate 8 slides into the limiting groove 9, thus installing the frame-shaped water tank 2 inside the outer casing 1. During the storage or transportation of the all-solid-state lithium battery 5, the all-solid-state lithium battery 5 is placed inside the frame-shaped water tank 2 within the outer casing 1. The top block 403, through the elasticity of the spring 404 in the groove 402 above the square block 401, presses against the all-solid-state lithium battery 5. The all-solid-state lithium battery 5 is confined within the frame-shaped water tank 2. The elasticity of the spring 404 can fix all-solid-state lithium batteries 5 of different thicknesses. The cover plate 14 covers the opening on the outer shell 1, and the rubber plate 15 is inserted into the opening on the outer shell 1. The locking block 17 is inserted into the locking slot 18, so that the cover plate 14 closes the outer shell 1. Flipping it can open the outer shell 1, making it easy to take out the all-solid-state lithium battery 5. The battery 6 supplies power to the semiconductor cooling chip 3. The semiconductor cooling chip 3 cools the water in the frame-shaped water tank 2, which can protect the all-solid-state lithium battery 5 at low temperature and prevent the all-solid-state lithium battery 5 from exploding due to high temperature.

Claims

1. A safety protection device for an all-solid-state lithium battery, comprising a housing (1), characterized in that: A frame-shaped water tank (2) is installed inside the outer shell (1), a semiconductor cooling chip (3) is installed inside the frame-shaped water tank (2), an all-solid-state lithium battery (5) extends into the frame-shaped water tank (2), and an elastic structure (4) is installed between the all-solid-state lithium battery (5) and the frame-shaped water tank (2). The number of elastic structures (4) is four. The elastic structures (4) are distributed on the four sides of the all-solid-state lithium battery (5) and the frame-shaped water tank (2). The elastic structure (4) includes a block (401), a square groove (402), a top block (403) and a spring (404). The block (401) is installed inside the frame-shaped water tank (2), the square groove (402) is opened on the block (401), the top block (403) is placed inside the square groove (402), the spring (404) is installed between the square groove (402) and the top block (403), and the top block (403) rests on the all-solid-state lithium battery (5).

2. The safety protection device for an all-solid-state lithium battery according to claim 1, characterized in that: The outer shell (1) is covered with a cover plate (14), and a rubber plate (15) is installed on the cover plate (14). The rubber plate (15) is inserted into the outer shell (1).

3. The safety protection device for an all-solid-state lithium battery according to claim 2, characterized in that: The cover plate (14) is limited to the outer shell (1) by a snap-fit ​​structure (16). There are two snap-fit ​​structures (16). The snap-fit ​​structures (16) are symmetrically distributed on both sides with the center line of the cover plate (14) as the center. The snap-fit ​​structure (16) includes a snap block (17) and a snap groove (18). The card block (17) is installed on the cover plate (14), the card slot (18) is opened on the outer shell (1), and the card block (17) is engaged in the card slot (18).

4. The safety protection device for an all-solid-state lithium battery according to claim 3, characterized in that: The card block (17) is equipped with an elastic element (19), and the elastic element (19) corresponds one-to-one with the card block (17).

5. A safety protection device for an all-solid-state lithium battery according to claim 1, characterized in that: The frame-shaped water tank (2) is limited within the outer shell (1) by a limiting structure (7). There are two limiting structures (7). The limiting structures (7) are symmetrically distributed on both sides with the center line of the frame-shaped water tank (2) as the center. The limiting structure (7) includes a limiting plate (8) and a limiting groove (9). The limiting plate (8) is installed outside the frame-shaped water tank (2), the limiting groove (9) is opened inside the outer shell (1), and the limiting plate (8) is snapped into the limiting groove (9).

6. The safety protection device for an all-solid-state lithium battery according to claim 1, characterized in that: The frame-shaped water tank (2) has a water storage port (10), a water storage pipe (11) is installed inside the water storage port (10), and a threaded cap (12) is fitted inside the water storage pipe (11).

7. A safety protection device for an all-solid-state lithium battery according to claim 1, characterized in that: A storage battery (6) is installed outside the frame-shaped water tank (2), and the storage battery (6) is electrically connected to the semiconductor cooling chip (3) through internal wires.

8. A safety protection device for an all-solid-state lithium battery according to claim 6, characterized in that: The threaded cap (12) has a hexagonal hole (13).

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