A lithium battery sealing explosion-proof shell

Abstract

The utility model discloses a lithium cell sealed explosion -proof casing, including the outer casing, the outer surface of outer casing is provided with the side, the one end of outer casing is provided with the sealing washer close to the side, and the upper end of sealing washer is provided with the sealing washer, and the outer surface of sealing washer is respectively with the outer surface of outer casing and top cap is in accord with, the outer surface of top cap is penetrated by the bolt, and is provided with the bolt between top cap and side, the inside of outer casing and top cap is provided with the fire -retardant material. This lithium cell sealed explosion -proof casing, when lithium body will produce a large amount of gas when burning leakage, will increase the pressure inside the outer casing simultaneously, at this moment, the gas will extrude the explosion -proof membrane, through the recess of the outer surface of explosion -proof membrane, make explosion -proof membrane can be broken easily and be relieved pressure, prevent the outer casing pressure too big and explode, after still can rotate the screw lid, replace explosion -proof membrane conveniently and use next time.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a sealed explosion-proof housing for lithium batteries. Background Technology

[0002] With the advancement and development of technology, more and more electrical devices are being used, leading to the emergence of power storage components. Lithium batteries are a new type of energy storage device with high energy density and good high-current discharge performance. They are environmentally friendly, have high energy density, long service life, and low-temperature resistance, and are widely used in automobiles, hybrid vehicles, communications, home appliances, military industries, and other fields. However, if a lithium battery is overcharged or over-discharged, or is subjected to impact or breakdown, it will generate a large amount of gas and heat, causing the sealed battery to expand and heat up, and even explode. Utility Model Content

[0003] The purpose of this invention is to provide a sealed and explosion-proof housing for lithium batteries to solve the problem of battery expansion and explosion caused by overcharging or over-discharging, as mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sealed explosion-proof housing for a lithium battery, comprising an outer shell, the outer surface of which is provided with side edges, and the outer surface of the side edges is uniformly provided with through holes, a sealing gasket is provided at one end of the outer shell near the side edge, and a sealing gasket is provided at the upper end of the sealing gasket, and the outer surface of the sealing gasket is respectively attached to the outer surface of the outer shell and the outer surface of the top cover, the outer surface of the top cover is penetrated by bolts, and bolts are provided between the top cover and the side edges, flame-retardant material is provided on the inner sides of the outer shell and the top cover, and the outer surface of the top cover is provided with a locking structure, which prevents the lithium battery from exploding.

[0005] Preferably, the engaging structure includes: a screw cap, the screw cap being threaded onto the side of the top cover away from the outer casing, and the outer surface of the screw cap being hexagonal, and an explosion-proof film being provided between the screw cap and the top cover, the outer surface of the explosion-proof film being provided with grooves, and the outer surface of the explosion-proof film being respectively attached to the outer surface of the top cover and the inner surface of the screw cap.

[0006] Using the above technical solution, when the lithium battery burns, pressure will be generated. At this time, the pressure will push up the explosion-proof film. Through the grooves of the explosion-proof film, the explosion-proof film can be more easily pushed open, allowing the pressure to be released and preventing the battery casing from exploding.

[0007] Preferably, a cooling plate is disposed inside the outer casing, and a lithium battery is disposed between the cooling plate and the outer casing. A temperature detection chip is embedded in the outer surface of the outer casing on the side closest to the lithium battery.

[0008] By adopting the above technical solution, the temperature of the lithium battery can be detected by a temperature sensing element, and the cooling plate can be controlled to cool the lithium battery, so that the lithium battery can always maintain the optimal operating temperature and extend the service life of the lithium battery.

[0009] Preferably, the outer casing is provided with a sliding mechanism to fix the lithium battery.

[0010] Using the above technical solution, the lithium battery and the cooling plate can be pressed and fixed by the baffle pushed by the spring.

[0011] Preferably, the sliding mechanism includes: a baffle, the side surface of the baffle is provided with block-shaped protrusions, the inside of the outer shell is provided with a sliding groove, and the sliding groove engages with the block-shaped protrusions on the side surface of the baffle, and the baffle and the sliding groove are slidably connected, and a spring is provided between the baffle and the outer shell.

[0012] By adopting the above technical solution, the baffle can slide inside the outer shell, allowing the baffle to move along the direction of the slide groove.

[0013] Preferably, an alarm indicator is fixedly installed at the end of the outer casing away from the temperature detection element, and a trigger button is fixedly installed inside the outer casing on the side near the alarm indicator. A trigger rod is provided inside the outer casing, and the trigger rod is threaded onto the side surface of the baffle. A fixing nut is threaded onto the outer surface of the trigger rod, and the side surface of the fixing nut is in contact with the side surface of the baffle.

[0014] Using the above technical solution, when the lithium battery inside the casing expands, it will push the baffle. As the baffle is pushed, it will drive the trigger rod to move, causing the trigger rod to push the trigger button, which will activate the alarm indicator to indicate that the lithium battery inside the casing has bulged.

[0015] Preferably, a transfer control box is fixedly installed on the side surface of the outer casing, and an operation light is provided on the outer surface of the transfer control box, and wiring is provided on the side surface of the transfer control box.

[0016] Using the above technical solution, the alarm indicator, temperature detection chip, lithium battery and cooling plate can be connected and controlled through the adapter control box. At the same time, the operation of the internal components can be observed through the operation light, and the lithium battery can be charged and discharged through the circuit.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the lithium battery sealed explosion-proof housing:

[0018] 1. When a lithium battery burns and leaks, it will produce a large amount of gas, which will increase the pressure inside the casing. At this time, the gas will squeeze the explosion-proof membrane. Through the grooves on the outer surface of the explosion-proof membrane, the explosion-proof membrane can be more easily ruptured to release pressure and prevent the casing from being over-pressurized and exploding. Afterwards, the screw cap can be unscrewed to replace the explosion-proof membrane for convenient use next time.

[0019] 2. After placing the lithium battery inside the housing, place the sealing gasket at the top of the housing, then close the top cover so that the top cover fits against the side surface of the sealing gasket. Then, pass the bolts through the top cover and the side, and tighten the bolts to clamp the sealing gasket, so that the housing forms a seal and prevents external liquid from entering the housing.

[0020] 3. When the lithium battery expands, it will push the baffle to move along the slide. The movement of the baffle will drive the trigger rod to move, so that the trigger rod contacts the trigger button, activating the alarm indicator and alerting the user through sound and light that the lithium battery inside the casing has expanded. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a top view of the structure of this utility model;

[0023] Figure 3 This is a top view of the outer shell and baffle structure of this utility model;

[0024] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point A in the middle;

[0025] Figure 5 This is a three-dimensional cross-sectional structural diagram of the screw cap and explosion-proof membrane of this utility model;

[0026] Figure 6 This is a cross-sectional three-dimensional structural diagram of the baffle and fixing nut of this utility model.

[0027] In the diagram: 1. Outer shell; 2. Side; 3. Bolt; 4. Top cover; 5. Sealing gasket; 6. Screw cap; 7. Explosion-proof film; 8. Cooling plate; 9. Lithium battery; 10. Temperature sensor; 11. Baffle; 12. Fixing nut; 13. Trigger rod; 14. Alarm indicator; 15. Trigger button; 16. Spring; 17. Slide; 18. Adapter control box; 19. Wiring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 This utility model provides a technical solution: a sealed explosion-proof shell for a lithium battery, including an outer shell 1, a side 2 on the outer surface of the outer shell 1, and through holes evenly distributed on the outer surface of the side 2, a sealing gasket 5 at one end of the outer shell 1 near the side 2, and a sealing gasket 5 at the upper end of the sealing gasket 5, and the outer surface of the sealing gasket 5 is respectively attached to the outer surface of the outer shell 1 and the outer surface of the top cover 4, the outer surface of the top cover 4 is penetrated by bolts 3, and bolts 3 are provided between the top cover 4 and the side 2, and flame-retardant material is provided on the inner side of the outer shell 1 and the top cover 4.

[0030] When in use, the lithium battery 9 is placed inside the outer casing 1, and the cooling plate 8 is sandwiched between the lithium battery 9. After placement, the sealing gasket 5 can be placed, and then the top cover 4 is covered. The top cover 4 is fixed to the side 2 by bolts 3 to seal the outer casing 1 for waterproofing.

[0031] The outer surface of the top cover 4 is provided with a locking structure to prevent the lithium battery from exploding. The locking structure includes a screw cap 6, which is threaded onto the side of the top cover 4 away from the outer casing 1. The outer surface of the screw cap 6 is hexagonal. An explosion-proof film 7 is provided between the screw cap 6 and the top cover 4. The outer surface of the explosion-proof film 7 is provided with a groove, and the outer surface of the explosion-proof film 7 is respectively attached to the outer surface of the top cover 4 and the inner surface of the screw cap 6.

[0032] If the lithium battery 9 burns during use, it will release a large amount of gas. Then, a large amount of gas will be generated inside the outer casing 1. At this time, the expanding gas will push up the explosion-proof film 7. The explosion-proof film 7 can be easily punctured through the groove of the explosion-proof film 7 to release pressure to the outside, preventing the outer casing 1 from exploding. Afterwards, the screw cap 6 can be unscrewed to replace the explosion-proof film 7 for recycling, preventing the lithium battery 9 from exploding and causing danger.

[0033] A cooling plate 8 is provided inside the outer casing 1, and a lithium battery 9 is provided between the cooling plate 8 and the outer casing 1. A temperature detection plate 10 is embedded on the outer surface of the outer casing 1 on the side close to the lithium battery 9.

[0034] The temperature of the lithium battery 9 can be detected by the temperature sensor 10, and the temperature of the lithium battery 9 can be cooled by the cooling plate 8 to prevent the lithium battery 9 from overheating during use and thus shortening its service life.

[0035] The outer casing 1 is provided with a sliding mechanism to fix the lithium battery 9. The sliding mechanism includes a baffle 11, the side surface of the baffle 11 is provided with block protrusions, the inner surface of the outer casing 1 is provided with a sliding groove 17, and the sliding groove 17 is engaged with the block protrusions on the side surface of the baffle 11. The baffle 11 and the sliding groove 17 are slidably connected, and a spring 16 is provided between the baffle 11 and the outer casing 1.

[0036] During installation, the baffle 11 can be opened, and the lithium battery 9 can be placed between the baffle 11 and the outer shell 1. Then, the baffle 11 can be released, and the spring 16 can push the baffle 11, allowing the baffle 11 to move along the slide groove 17 to fix the lithium battery 9. At the same time, when the lithium battery 9 expands, it will push the baffle 11 to move, thus fixing the lithium battery 9.

[0037] An alarm indicator 14 is fixedly installed at the end of the outer casing 1 away from the temperature detection plate 10, and a trigger button 15 is fixedly installed inside the outer casing 1 on the side close to the alarm indicator 14. A trigger rod 13 is provided inside the outer casing 1, and the trigger rod 13 is threadedly installed on the side surface of the baffle 11. A fixing nut 12 is threadedly installed on the outer surface of the trigger rod 13, and the side surface of the fixing nut 12 is in contact with the side surface of the baffle 11.

[0038] After the lithium battery 9 is placed, the length of the trigger rod 13 can be adjusted. Then, the trigger rod 13 is fixed by the fixing nut 12. When the lithium battery 9 expands, it will push the baffle 11, which will move the trigger rod 13 and trigger the trigger button 15, which will activate the alarm indicator 14 to indicate that the lithium battery 9 has expanded.

[0039] A transfer control box 18 is fixedly installed on the side surface of the outer casing 1, and an operation light is provided on the outer surface of the transfer control box 18, and a wiring 19 is provided on the side surface of the transfer control box 18.

[0040] The lithium battery 9 is charged and discharged through line 19, and the cooling plate 8, lithium battery 9, temperature detection plate 10 and alarm indicator 14 inside the outer casing 1 are scheduled and used through the transfer control box 18.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed explosion-proof housing for a lithium battery, comprising an outer shell (1), wherein the outer surface of the outer shell (1) is provided with a side (2), and the outer surface of the side (2) is uniformly provided with through holes, a sealing gasket (5) is provided at one end of the outer shell (1) near the side (2), and a sealing gasket (5) is provided at the upper end of the sealing gasket (5), and the outer surface of the sealing gasket (5) is respectively attached to the outer surface of the outer shell (1) and the outer surface of the top cover (4), the outer surface of the top cover (4) is penetrated by a bolt (3), and a bolt (3) is provided between the top cover (4) and the side (2), and flame-retardant material is provided on the inner sides of the outer shell (1) and the top cover (4), characterized in that: The outer surface of the top cover (4) is provided with a locking structure to prevent the lithium battery from exploding.

2. The lithium battery sealed explosion-proof housing according to claim 1, characterized in that: The engaging structure includes a screw cap (6), which is threaded onto the top cover (4) on the side away from the outer shell (1). The outer surface of the screw cap (6) is hexagonal, and an explosion-proof film (7) is provided between the screw cap (6) and the top cover (4). The outer surface of the explosion-proof film (7) is provided with a groove, and the outer surface of the explosion-proof film (7) is respectively attached to the outer surface of the top cover (4) and the inner surface of the screw cap (6).

3. The lithium battery sealed explosion-proof housing according to claim 1, characterized in that: The outer casing (1) is provided with a cooling plate (8) inside, and a lithium battery (9) is provided between the cooling plate (8) and the outer casing (1). A temperature detection plate (10) is embedded on the outer surface of the outer casing (1) near the lithium battery (9).

4. The lithium battery sealed explosion-proof housing according to claim 1, characterized in that: The outer casing (1) is provided with a sliding mechanism inside, which fixes the lithium battery (9).

5. The lithium battery sealed explosion-proof housing according to claim 4, characterized in that: The sliding mechanism includes: a baffle (11), the side surface of the baffle (11) is provided with block protrusions, the inside of the outer shell (1) is provided with a sliding groove (17), and the sliding groove (17) engages with the block protrusions on the side surface of the baffle (11), and the baffle (11) and the sliding groove (17) are slidably connected, and a spring (16) is provided between the baffle (11) and the outer shell (1).

6. The lithium battery sealed explosion-proof housing according to claim 1, characterized in that: An alarm indicator (14) is fixedly installed at one end of the outer shell (1) away from the temperature detection plate (10), and a trigger button (15) is fixedly installed inside the outer shell (1) on the side close to the alarm indicator (14). A trigger rod (13) is provided inside the outer shell (1), and the trigger rod (13) is threadedly installed on the side surface of the baffle (11). A fixing nut (12) is threadedly installed on the outer surface of the trigger rod (13), and the side surface of the fixing nut (12) is in contact with the side surface of the baffle (11).

7. The lithium battery sealed explosion-proof housing according to claim 1, characterized in that: A transfer control box (18) is fixedly installed on the side surface of the outer casing (1), and an operating light is provided on the outer surface of the transfer control box (18), and a circuit (19) is provided on the side surface of the transfer control box (18).

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