Battery explosion-proof structure and inspection robot

Abstract

The invention relates to the technical field of battery explosion prevention, and discloses a battery explosion-proof structure and an inspection robot, the battery explosion-proof structure comprises a battery main body and a cover plate, a pressure relief hole is formed in the upper end of the cover plate, a pressing block is arranged in the pressure relief hole, and a first bolt is arranged above the pressing block. Through cooperative use of the pressing block, the anti-explosion sheet, the sliding pipe, the exhaust hole and the like, when the battery main body is subjected to thermal runaway, a large amount of gas is generated in the battery main body and the gas bursts the anti-explosion sheet, the gas simultaneously pushes the blocking plug to enable the blocking plug to move upwards, after the blocking plug moves upwards, the gas enters the sliding pipe through the exhaust hole, and then the gas is exhausted through the sliding pipe; furthermore, the pressure in the battery main body is reduced, and explosion caused by overhigh air pressure in the battery main body is avoided; and after the pressure relief of the battery main body is completed, if the battery main body can be simply maintained and continuously used, the explosion-proof sheet broken by air pressure can be directly replaced, so that the battery is convenient and quick, the whole battery does not need to be scrapped, and unnecessary waste is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of battery explosion-proof, and in particular to a battery explosion-proof structure and an inspection robot. Background Art

[0002] At present, inspection robots are basically powered by rechargeable batteries. Explosion-proof batteries are a special type of rechargeable batteries, which are designed to prevent explosions in the event of a malfunction. When the battery is in thermal runaway, a large amount of gas will be generated inside the battery, causing the internal pressure of the battery to rise sharply, which in turn makes the battery at risk of explosion. The principle of explosion-proof batteries is that when the battery is in thermal runaway, the pressure inside the battery can be released to avoid the risk of battery explosion.

[0003] At present, battery pressure relief valves generally weld explosion-proof plates on the pressure relief ports of batteries. When the pressure inside the battery reaches a certain level, the pressure inside the battery will break through the explosion-proof plates to complete the pressure relief. This pressure relief method is reliable and will not easily cause mechanical fatigue and lead to pressure relief failure of the device. However, when the above-mentioned pressure relief method is used, once the battery is depressurized, the battery will be scrapped. However, not all battery thermal runaways will cause the battery to be scrapped. Generally, only battery thermal runaways caused by internal short circuits will cause the battery to be scrapped. Sometimes, after the battery explosion-proof plate is opened, the battery is only damaged and not completely scrapped. The directly welded explosion-proof plates are difficult to repair, and cost considerations cause the battery to be scrapped, resulting in unnecessary waste. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a battery explosion-proof structure and an inspection robot. After the explosion-proof plate is broken, if the battery body can continue to be used after a simple repair, the explosion-proof plate broken by air pressure can be directly replaced, which is convenient and quick to avoid unnecessary waste.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A battery explosion-proof structure and an inspection robot, comprising a battery main body and a cover plate, a pressure relief hole is provided at the upper end of the cover plate, a pressure block is arranged in the pressure relief hole, and a first bolt is arranged above the pressure block, one end of the first bolt penetrates the pressure block and is threadedly connected to the cover plate, an explosion-proof plate is arranged in the pressure relief hole below the pressure block, and a through hole is provided on the surface of the pressure block, a stopper is slidably connected to the inner wall of the through hole, and a cover plate is provided outside the through hole, a second bolt is provided on one side of the cover plate, and one end of the second bolt penetrates the cover plate and is threadedly connected to the pressure block, a support ring is fixedly connected to the inner wall of the through hole, and a slide tube is fixedly connected to the upper surface of the support ring, one end of the slide tube penetrates the stopper and the cover plate, an exhaust hole is provided on the outer wall of the slide tube, and a cooling and fire extinguishing mechanism is fixedly connected to one side wall of the battery main body.

[0007] Preferably, the cooling and fire extinguishing mechanism includes a gas cylinder fixedly connected to the battery body, and one side wall of the gas cylinder is connected to an inflation valve, an air guide ring is provided inside the pressing block, and a plurality of jet holes are provided at the upper end of the pressing block, the jet holes are connected to the air guide ring, a first guide hole and a second guide hole are provided inside the pressing block, and the first guide hole is connected to the air guide ring, a third guide hole is provided on the side wall of the stopper, and one side wall of the gas cylinder is connected to a conduit, and one end of the conduit passes through the cover plate and is connected to the second guide hole.

[0008] Preferably, a first copper gasket is fixedly connected to the inner wall of the pressure relief hole, a second copper gasket is fixedly connected to the lower end of the pressure block, and the explosion-proof plate is located between the first copper gasket and the second copper gasket.

[0009] Preferably, a spring is provided below the cover plate, and one end of the spring abuts against the stopper.

[0010] Preferably, a cushion block is fixedly connected to the lower surface of the cover plate, and a magnet is fixedly connected to the lower end of the cushion block. The stopper is made of metal, and a soft sleeve is fixedly connected to the outer wall of the stopper.

[0011] Preferably, a heat conductive sheet is fixedly connected to one side wall of the gas cylinder, and a heat sink is fixedly connected to one side wall of the heat conductive sheet, one end of the heat sink is fixedly connected to the gas cylinder, one end of the heat conductive sheet is bent into a buckle plate, and the buckle plate is in contact with the battery body.

[0012] Preferably, a soft cushion is provided between the pressing block and the cover plate.

[0013] The present invention also provides an inspection robot, comprising a robot body, wherein the robot body comprises the battery explosion-proof structure described above.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention uses a pressure block, an explosion-proof plate, a sliding pipe and an exhaust hole together. When a large amount of gas is generated in the battery body due to thermal runaway of the battery body, when the gas breaks the explosion-proof plate, the gas will simultaneously push the stopper, causing the stopper to move upward. After the stopper moves upward, the gas will enter the sliding pipe through the exhaust hole, and then the gas will be discharged through the sliding pipe, thereby reducing the pressure in the battery body to avoid the explosion caused by excessive gas pressure in the battery body. At the same time, the sliding pipe can limit the stopper to ensure the stability of the stopper when it moves up and down. After the pressure relief of the battery body is completed, if the battery body can be simply repaired and continued to be used, the explosion-proof plate that is broken by the gas pressure can be directly replaced, which is convenient and quick, and there is no need to scrap the entire battery, thereby avoiding unnecessary waste. At the same time, by providing a cooling and fire extinguishing mechanism, the risk of battery fire can be reduced when the battery body is thermally runaway, and the battery body can be cooled at the same time to reduce the gas generated by the battery body per unit time, alleviate the gas pressure generated by the thermal runaway of the battery body, and improve safety.

[0016] 2. The present invention is used in conjunction with a gas cylinder, a first guide hole, and a second guide hole. Before use, a large amount of compressed carbon dioxide liquid is charged into the gas cylinder through the inflation valve. When the battery main body is thermally runaway and the gas generated by the battery main body pushes the stopper to move upward, after the stopper moves to a certain position, the third guide hole is connected to the first guide hole and the second guide hole. At this time, the carbon dioxide liquid in the gas cylinder can be gasified into carbon dioxide gas. The gasified carbon dioxide gas enters the gas guide ring through the second guide hole, the third guide hole, and the first guide hole. The carbon dioxide gas entering the gas guide ring can be discharged through the gas jet hole. The discharged carbon dioxide gas fills the surrounding side of the gas ejected from the slide pipe, isolating the air from the gas ejected from the slide pipe, thereby preventing the gas ejected from the slide pipe from burning. At the same time, when the carbon dioxide liquid is gasified, the carbon dioxide liquid will absorb a large amount of heat, thereby cooling the gas cylinder. The cooled gas cylinder absorbs the heat of the battery main body, thereby cooling the battery main body, thereby reducing the gas generated by the battery main body per unit time, alleviating the gas pressure generated by the thermal runaway of the battery main body, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an inspection robot proposed by the present invention;

[0018] Figure 2 A schematic diagram of a three-dimensional structure of a battery explosion-proof structure proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the overall structure of a battery explosion-proof structure proposed by the present invention;

[0020] Figure 4 A first cross-sectional structural schematic diagram of a battery explosion-proof structure proposed by the present invention;

[0021] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0022] Figure 6 for Figure 5 The enlarged structural diagram at B in the middle;

[0023] Figure 7 A second cross-sectional structural schematic diagram of a battery explosion-proof structure proposed by the present invention;

[0024] Figure 8 for Figure 7 The enlarged structural diagram at C in the middle;

[0025] Fig. 9 for Figure 8 Schematic diagram of the structure enlarged at point D in the middle.

[0026] In the figure: 1. battery body; 2. cover plate; 3. pressure relief hole; 4. pressure block; 5. first bolt; 6. through hole; 7. stopper; 8. cover plate; 9. second bolt; 10. support ring; 11. slide pipe; 12. exhaust hole; 13. gas cylinder; 14. inflation valve; 15. air guide ring; 16. jet hole; 17. first guide hole; 18. second guide hole; 19. third guide hole; 20. conduit; 21. first copper gasket; 22. second copper gasket; 23. spring; 24. gasket; 25. magnet; 26. heat sink; 27. buckle plate; 28. cushion; 29. ​​robot body; 30. thermal conductive sheet; 31. explosion-proof sheet. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-Figure 9 A battery explosion-proof structure comprises a battery body 1 and a cover plate 2, a pressure relief hole 3 is provided at the upper end of the cover plate 2, a pressure block 4 is arranged in the pressure relief hole 3, and a first bolt 5 is arranged above the pressure block 4, one end of the first bolt 5 penetrates the pressure block 4 and is threadedly connected with the cover plate 2, an explosion-proof plate 31 is arranged in the pressure relief hole 3 below the pressure block 4, and a through hole 6 is provided on the surface of the pressure block 4, a stopper 7 is slidably connected to the inner wall of the through hole 6, and a cover plate 8 is arranged outside the through hole 6, a second bolt 9 is provided on one side of the cover plate 8, and one end of the second bolt 9 penetrates the cover plate 8 and is threadedly connected to the pressure block 4, a support ring 10 is fixedly connected to the inner wall of the through hole 6, and a slide tube 11 is fixedly connected to the upper surface of the support ring 10, one end of the slide tube 11 penetrates the stopper 7 and is arranged with the cover plate 8, an exhaust hole 12 is provided on the outer wall of the slide tube 11, and a cooling and fire extinguishing mechanism is fixedly connected to one side wall of the battery body 1.

[0029] It can be seen from the above structure that: by setting the pressure block 4, the explosion-proof plate 31, the slide tube 11 and the exhaust hole 12, when the battery body 1 has thermal runaway and a large amount of gas is generated in the battery body 1, when the gas breaks the explosion-proof plate 31, the gas will simultaneously push the stopper 7, so that the stopper 7 moves up. After the stopper 7 moves up, the gas will enter the slide tube 11 through the exhaust hole 12, and then the gas will be discharged through the slide tube 11, thereby reducing the pressure in the battery body 1, avoiding the explosion caused by excessive gas pressure in the battery body 1. At the same time, the slide tube 11 can limit the stopper 7 to ensure The stability of the stopper 7 when it moves up and down; after the pressure relief of the battery main body 1 is completed, if the battery main body 1 can continue to be used after a simple repair, the explosion-proof plate 31 that is broken by the air pressure can be directly replaced, which is convenient and quick, and there is no need to scrap the entire battery, thereby avoiding unnecessary waste; at the same time, by setting a cooling and fire extinguishing mechanism, the risk of battery fire can be reduced when the battery main body 1 is thermally runaway, and the battery main body 1 can be cooled at the same time to reduce the gas generated by the battery main body 1 per unit time, alleviate the air pressure generated by the thermal runaway of the battery main body 1, and improve safety.

[0030] Furthermore, the cooling and fire extinguishing mechanism includes a gas cylinder 13 fixedly connected to the battery body 1, and a side wall of the gas cylinder 13 is connected to a charging valve 14, an air guide ring 15 is provided inside the pressing block 4, and a plurality of jet holes 16 are provided at the upper end of the pressing block 4, and the jet holes 16 are connected to the air guide ring 15, a first guide hole 17 and a second guide hole 18 are provided inside the pressing block 4, and the first guide hole 17 is connected to the air guide ring 15, a third guide hole 19 is provided on the side wall of the stopper 7, a side wall of the gas cylinder 13 is connected to a conduit 20, and one end of the conduit 20 passes through the cover plate 2 and is connected to the second guide hole 18; by setting the gas cylinder 13, the first guide hole 17 and the second guide hole 18 for use, before use, a large amount of compressed carbon dioxide liquid is flushed into the gas cylinder 13 through the charging valve 14, and when the battery body 1 thermally runs away and the gas generated by the battery body 1 pushes the stopper 7 to move up, the stopper 7 moves to a position on the stopper 7. After being positioned, the third guide hole 19 is connected to the first guide hole 17 and the second guide hole 18. At this time, the carbon dioxide liquid in the gas cylinder 13 can be gasified into carbon dioxide gas. The gasified carbon dioxide gas enters the gas guide ring 15 through the second guide hole 18, the third guide hole 19 and the first guide hole 17. The carbon dioxide gas entering the gas guide ring 15 can be discharged through the jet hole 16. The discharged carbon dioxide gas fills the surrounding side of the gas ejected from the slide pipe 11, isolating the air from the gas ejected from the slide pipe 11, thereby preventing the gas ejected from the slide pipe 11 from burning. At the same time, when the carbon dioxide liquid is gasified, the carbon dioxide liquid will absorb a large amount of heat, thereby cooling the gas cylinder 13. The cooled gas cylinder 13 absorbs the heat of the battery main body 1, thereby cooling the battery main body 1, thereby reducing the gas generated by the battery main body 1 per unit time, alleviating the gas pressure generated by the thermal runaway of the battery main body 1, and improving safety.

[0031] Furthermore, a first copper gasket 21 is fixedly connected to the inner wall of the pressure relief hole 3, a second copper gasket 22 is fixedly connected to the lower end of the pressure block 4, and the explosion-proof plate 31 is located between the first copper gasket 21 and the second copper gasket 22; by arranging the first copper gasket 21 and the second copper gasket 22, when the explosion-proof plate 31 is installed, the first copper gasket 21 and the second copper gasket 22 can clamp the explosion-proof plate 31, and at the same time, because the first copper gasket 21 and the second copper gasket 22 are made of copper, which is soft, the first copper gasket 21 and the second copper gasket 22 can avoid clamping the explosion-proof plate 31 when clamping the explosion-proof plate 31.

[0032] Furthermore, a spring 23 is provided under the cover plate 8, and one end of the spring 23 is against the stopper 7. The spring 23 can press the stopper 7 to prevent the stopper 7 from moving at will, and the force of the spring 23 pressing on the stopper 7 is smaller than the force of the pressure generated in the battery body 1 to push open the explosion-proof plate 31, so that after the explosion-proof plate 31 is pressed open, the air pressure can push the stopper 7 at the first time; by providing the spring 23, the stopper 7 can be prevented from moving at will.

[0033] Furthermore, a pad 24 is fixedly connected to the lower surface of the cover plate 8, and a magnet 25 is fixedly connected to the lower end of the pad 24. The stopper 7 is made of metal, and a soft cover is fixedly connected to the outer wall of the stopper 7. By providing the pad 24, the stopper 7 can be stopped after the stopper 7 moves to a certain position, thereby ensuring the stability of the position of the stopper 7 after stopping, thereby ensuring that the third guide hole 19 can be connected to the first guide hole 17 and the second guide hole 18, and by providing the magnet 25, the magnet 25 can be attracted after the stopper 7 moves to a certain position to limit the stopper 7, thereby ensuring that the air pressure generated in the battery body 1 can be completely discharged.

[0034] Furthermore, a heat conductive sheet 30 is fixedly connected to one side wall of the gas cylinder 13, and a heat sink 26 is fixedly connected to one side wall of the heat conductive sheet 30, one end of the heat sink 26 is fixedly connected to the gas cylinder 13, one end of the heat conductive sheet 30 is bent into a buckle plate 27, and the buckle plate 27 is in contact with the battery body 1; by setting the heat conductive sheet 30, and the heat conductive sheet 30 and the buckle plate 27 are used in conjunction, when in use, the heat generated by the battery body 1 can be dissipated outward through the heat conductive sheet 30 and the heat sink 26, when the gas cylinder 13 is cooled, the cooled gas cylinder 13 absorbs the heat generated by the battery body 1 through the heat conductive sheet 30, the buckle plate 27 and the heat sink 26, and then cools the battery body 1, so as to reduce the gas generated by the battery body 1 per unit time, alleviate the gas pressure generated by thermal runaway of the battery body 1, and improve safety.

[0035] Furthermore, a cushion 28 is provided between the pressing block 4 and the cover plate 2 ; by providing the cushion 28 , the air tightness between the pressing block 4 and the cover plate 2 can be increased.

[0036] A patrol robot includes a robot body 29, wherein the robot body 29 includes the battery explosion-proof structure described above.

[0037] In the present invention, before use, a large amount of compressed carbon dioxide liquid is charged into the gas cylinder 13 through the charging valve 14. When in use, the heat generated by the battery body 1 can be dissipated outwards through the heat conducting sheet 30 and the heat sink 26;

[0038] When the battery body 1 is thermally runaway and a large amount of gas is generated in the battery body 1, when the gas breaks the explosion-proof plate 31, the gas will push the stopper 7 at the same time, causing the stopper 7 to move upward. After the stopper 7 moves upward, the gas will enter the slide tube 11 through the exhaust hole 12, and then the gas will be discharged through the slide tube 11, thereby reducing the pressure in the battery body 1, and preventing the battery body 1 from exploding due to excessive gas pressure;

[0039] After the stopper 7 moves to a certain position, the third guide hole 19 is connected to the first guide hole 17 and the second guide hole 18. At this time, the carbon dioxide liquid in the gas cylinder 13 can be gasified into carbon dioxide gas. The gasified carbon dioxide gas enters the gas guide ring 15 through the second guide hole 18, the third guide hole 19 and the first guide hole 17. The carbon dioxide gas entering the gas guide ring 15 can be discharged through the jet hole 16. The discharged carbon dioxide gas fills the surrounding side of the gas ejected from the slide pipe 11, isolating the air from the gas ejected from the slide pipe 11, thereby preventing the gas ejected from the slide pipe 11 from burning. At the same time, when the carbon dioxide liquid is gasified, the carbon dioxide liquid will absorb a large amount of heat, thereby cooling the gas cylinder 13. The cooled gas cylinder 13 absorbs the heat generated by the battery body 1 through the heat conductive sheet 30, the buckle plate 27 and the heat sink 26, thereby cooling the battery body 1, so as to reduce the gas generated by the battery body 1 per unit time, alleviate the gas pressure generated by the thermal runaway of the battery body 1, and improve safety;

[0040] After the pressure relief of the battery body 1 is completed, if the battery body 1 can be simply repaired and continued to be used, the explosion-proof disk 31 that is broken by the air pressure can be directly replaced, which is convenient and quick, and there is no need to scrap the entire battery, thereby avoiding unnecessary waste.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery explosion-proof structure, comprising a battery body (1) and a cover plate (2), wherein a pressure relief hole (3) is provided at the upper end of the cover plate (2), characterized in that: A pressure block (4) is arranged inside the pressure relief hole (3), and a first bolt (5) is arranged above the pressure block (4), one end of the first bolt (5) passes through the pressure block (4) and is threadedly connected to the cover plate (2), an explosion-proof plate (31) is arranged in the pressure relief hole (3) below the pressure block (4), and a through hole (6) is opened on the surface of the pressure block (4), a stopper (7) is slidably connected to the inner wall of the through hole (6), and a cover plate (8) is arranged outside the through hole (6), and the cover plate (8) is A second bolt (9) is provided on one side, and one end of the second bolt (9) passes through the cover plate (8) and is threadedly connected to the pressing block (4); a support ring (10) is fixedly connected to the inner wall of the through hole (6), and a slide tube (11) is fixedly connected to the upper surface of the support ring (10); one end of the slide tube (11) passes through the stopper (7) and the cover plate (8); an exhaust hole (12) is provided on the outer wall of the slide tube (11); and a cooling and fire extinguishing mechanism is fixedly connected to a side wall of one side of the battery body (1).

2. A battery explosion-proof structure according to claim 1, characterized in that: The cooling and fire extinguishing mechanism comprises a gas cylinder (13) fixedly connected to the battery body (1), and a side wall of the gas cylinder (13) is connected to a gas charging valve (14), a gas guide ring (15) is provided inside the pressing block (4), and a plurality of gas injection holes (16) are provided at the upper end of the pressing block (4), the gas injection holes (16) are connected to the gas guide ring (15), a first guide hole (17) and a second guide hole (18) are provided inside the pressing block (4), and the first guide hole (17) is connected to the gas guide ring (15), a third guide hole (19) is provided on the side wall of the stopper (7), and a guide tube (20) is connected to one side wall of the gas cylinder (13), and one end of the guide tube (20) passes through the cover plate (2) and is connected to the second guide hole (18).

3. A battery explosion-proof structure according to claim 1 or 2, characterized in that: A first copper gasket (21) is fixedly connected to the inner wall of the pressure relief hole (3), a second copper gasket (22) is fixedly connected to the lower end of the pressure block (4), and the explosion-proof plate (31) is located between the first copper gasket (21) and the second copper gasket (22).

4. A battery explosion-proof structure according to claim 1 or 2, characterized in that: A spring (23) is arranged below the cover plate (8), and one end of the spring (23) abuts against the stopper (7).

5. A battery explosion-proof structure according to claim 1 or 2, characterized in that: The lower surface of the cover plate (8) is fixedly connected to a cushion block (24), and the lower end of the cushion block (24) is fixedly connected to a magnet (25); the stopper (7) is made of metal, and the outer wall of the stopper (7) is fixedly connected to a soft sleeve.

6. A battery explosion-proof structure according to claim 2, characterized in that: A heat conducting sheet (30) is fixedly connected to one side wall of the gas cylinder (13), and a heat sink (26) is fixedly connected to one side wall of the heat conducting sheet (30), one end of the heat sink (26) is fixedly connected to the gas cylinder (13), one end of the heat conducting sheet (30) is bent into a buckle plate (27), and the buckle plate (27) is in contact with the battery body (1).

7. A battery explosion-proof structure according to claim 1, 2 or 6, characterized in that: A soft pad (28) is provided between the pressing block (4) and the cover plate (2).

8. A patrol robot, comprising a robot body (29), characterized in that: The robot body (29) comprises the battery explosion-proof structure according to any one of the above claims.

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