A safe battery pack with pressure relief

Abstract

The utility model discloses a kind of safe battery groups of pressure relief, including shell assembly, top shell assembly being arranged at the top of shell assembly, the top of top shell assembly is provided with pressure relief mechanism, the pressure relief mechanism includes connecting plate one, the bottom of connecting plate one is communicated with top shell assembly, the top of connecting plate one is communicated with air bag assembly, the top of air bag assembly is communicated with connecting plate two, the top of connecting plate two is communicated with outlet head, the top of outlet head is provided with air hole one, the top of outlet head is provided with gear disc cover, the top of gear disc cover is provided with air hole two, air hole two is used in cooperation with air hole one.The utility model battery group changes the mode of traditional pop-up valve piece to relieve pressure, adopts air hole one and air hole two superposition, makes the air pressure of air bag assembly inside accumulation discharge, just can protect surrounding battery group from pressure extrusion, the service life of surrounding battery group has been guaranteed, increase its security.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a pressure-relief safety battery pack. Background Technology

[0002] Battery safety remains a primary concern for consumers. According to a patent published on the China Patent Network, titled "A Safe and Explosion-Proof Lithium Battery," patent application number 202322063846.7, the battery includes a lithium battery casing. Connecting posts are fixedly connected to the inner walls of both sides of the casing. A heat-conducting plate is fixedly connected to one side of each connecting post, and a heat dissipation fin is electrically connected to one side of the heat-conducting plate. Mounting grooves are formed on both inner walls of the casing, and a cooling fan is fixedly connected inside each mounting groove. A pressure relief groove is formed on one side of the casing, and a spring is fixedly connected inside the groove. A compression plate is fixedly connected to one side of the spring. A pressure relief channel is provided on one side of the pressure groove. An explosion-proof bladder is fixedly connected inside the lithium battery casing, and a lithium battery assembly is installed inside the lithium battery casing. Heat is conducted to the surface of the lithium battery assembly through a heat-conducting plate and heat dissipation fins, and then dissipated into the lithium battery casing through a cooling fan and heat dissipation holes, reducing the possibility of explosion. However, the pressure relief method of the battery packs mentioned above relies on the internal pressure of the battery to pop out the valve plate of the explosion-proof valve. This pressure relief method has a high risk factor, as the popped-out valve plate can easily splash onto the surrounding battery packs, which will not guarantee their service life and affect their safety.

[0003] Therefore, the battery pack design needs to be modified to effectively prevent the valve plate that pops out during pressure relief from easily splashing onto the surrounding battery pack. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a pressure-relief safety battery pack, which has the advantage of being able to release pressure with an airbag to increase safety, and solves the problem that the valve plate that pops out during pressure relief can easily splash onto the surrounding battery pack.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-relief safety battery pack, including a housing assembly;

[0006] A top shell assembly positioned on top of the housing assembly;

[0007] The top of the top shell assembly is provided with a pressure relief mechanism, which includes a connecting plate one. The bottom of the connecting plate one is connected to the top shell assembly, and the top of the connecting plate one is connected to an airbag assembly. The top of the airbag assembly is connected to a connecting plate two, and the top of the connecting plate two is connected to an air outlet. The top of the air outlet has an air hole one, and the top of the air outlet has a geared disc cover. The top of the geared disc cover has an air hole two, which is used in conjunction with the air hole one. The top of the geared disc cover is movably connected to an L-shaped plate via a bearing. The side of the L-shaped plate away from the geared disc cover is fixedly connected to the top shell assembly. The back of the geared disc cover is provided with a gear plate, and the front of the gear plate meshes with the geared disc cover. A sliding plate is fixedly connected to the right side of the bottom of the gear plate, and a base plate is slidably connected to the bottom of the sliding plate. The bottom of the base plate is fixedly connected to the top shell assembly. Both the front and back of the connecting plate two are fixedly connected to L-shaped limiting rods, and the bottom of the L-shaped limiting rods is fixedly connected to the top shell assembly.

[0008] As a preferred embodiment of this utility model, a limiting mechanism is fixedly connected to the top of the base plate. The limiting mechanism includes a fixed plate, a spring fixedly connected to the back of the fixed plate, a movable plate fixedly connected to the back of the spring, the bottom of the movable plate being slidably connected to the base plate, a limiting wheel rod one fixedly connected to the back of the movable plate, a limiting wheel rod two provided on the back of the limiting wheel rod one, and the back of the limiting wheel rod two being fixedly connected to the slide plate.

[0009] As a preferred embodiment of this utility model, the top of the base plate is provided with a movable groove, and the bottom of the movable plate is slidably connected to the inside of the movable groove.

[0010] As a preferred embodiment of this utility model, a groove is provided on the rear side of the top of the base plate, and the bottom of the slide plate is slidably connected to the inside of the groove.

[0011] As a preferred embodiment of this utility model, the front of the fixing plate is fixedly connected to an inclined block, and the bottom of the inclined block is fixedly connected to the base plate.

[0012] As a preferred embodiment of this invention, a handle bend is fixedly connected to the right side of the skateboard, and the handle bend is used in conjunction with the skateboard.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model of battery pack changes the traditional method of releasing pressure by popping up the valve plate. It adopts the method of overlapping air hole one and air hole two to release the air pressure accumulated inside the airbag assembly, which can protect the surrounding battery pack from pressure compression, thus ensuring the service life of the surrounding battery pack and increasing its safety.

[0015] 2. By setting up a limiting mechanism, this utility model can restrict the movement of the skateboard and avoid unstable rebound.

[0016] 3. By setting up the moving groove, this utility model enables the moving plate to slide more smoothly inside the base plate, reducing friction between the moving plate and the base plate and extending the service life of the moving plate.

[0017] 4. The grooves in this invention enable the skateboard to move more stably and prevent tilting.

[0018] 5. By setting the inclined block, this utility model enables the fixing plate to operate more stably, thereby increasing the stability of the fixing plate.

[0019] 6. The design of the handle bend plate in this utility model makes it easier for users to pull the handle bend plate, thus increasing user convenience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural diagram of the pressure relief mechanism and the limiting mechanism of this utility model;

[0022] Figure 3 This is an exploded view of a partial structure of the present invention;

[0023] Figure 4 This is a partial three-dimensional view of the present invention.

[0024] In the diagram: 1. Shell assembly; 2. Top shell assembly; 3. Pressure relief mechanism; 4. Connecting plate one; 5. Airbag assembly; 6. Connecting plate two; 7. Air outlet; 8. Air hole one; 9. Gear plate cover; 10. Air hole two; 11. L-shaped plate; 12. Gear plate; 13. Slide plate; 14. Base plate; 15. L-shaped limit rod; 16. Restriction mechanism; 17. Fixed plate; 18. Spring; 19. Moving plate; 20. Restriction wheel rod one; 21. Restriction wheel rod two; 22. Moving groove; 23. Groove; 24. Inclined block; 25. Handle bending plate. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 4As shown, the present invention provides a pressure-relief safety battery pack, including a housing assembly 1;

[0027] Top shell assembly 2 is disposed on top of housing assembly 1;

[0028] The top of the top shell assembly 2 is provided with a pressure relief mechanism 3. The pressure relief mechanism 3 includes a connecting plate 4. The bottom of the connecting plate 4 is connected to the top shell assembly 2, and the top of the connecting plate 4 is connected to an airbag assembly 5. The top of the airbag assembly 5 is connected to a connecting plate 6, and the top of the connecting plate 6 is connected to an air outlet 7. The top of the air outlet 7 has an air hole 8, and the top of the air outlet 7 is provided with a geared disc cover 9. The top of the geared disc cover 9 has an air hole 10, which is used in conjunction with the air hole 8. The top of the geared disc cover 9 is connected by a shaft. An L-shaped plate 11 is connected to the connecting plate 6. The side of the L-shaped plate 11 away from the gear cover 9 is fixedly connected to the top shell assembly 2. A gear plate 12 is provided on the back of the gear cover 9. The front of the gear plate 12 engages with the gear cover 9. A slide plate 13 is fixedly connected to the right side of the bottom of the gear plate 12. A bottom plate 14 is slidably connected to the bottom of the slide plate 13. The bottom of the bottom plate 14 is fixedly connected to the top shell assembly 2. L-shaped limiting rods 15 are fixedly connected to both the front and back of the connecting plate 6. The bottom of the L-shaped limiting rods 15 is fixedly connected to the top shell assembly 2.

[0029] refer to Figure 1 and Figure 2 A limiting mechanism 16 is fixedly connected to the top of the base plate 14. The limiting mechanism 16 includes a fixed plate 17. A spring 18 is fixedly connected to the back of the fixed plate 17. A movable plate 19 is fixedly connected to the back of the spring 18. The bottom of the movable plate 19 is slidably connected to the base plate 14. A limiting wheel rod 1 20 is fixedly connected to the back of the movable plate 19. A limiting wheel rod 21 is provided on the back of the limiting wheel rod 1 20. The back of the limiting wheel rod 21 is fixedly connected to the slide plate 13.

[0030] As a technical optimization of this utility model, the limiting mechanism 16 can restrict the movement of the slide plate 13, thus avoiding unstable rebound.

[0031] refer to Figure 2 The top of the base plate 14 is provided with a movable groove 22, and the bottom of the movable plate 19 is slidably connected to the inside of the movable groove 22.

[0032] As a technical optimization of this utility model, the movable groove 22 enables the movable plate 19 to slide more smoothly inside the base plate 14, reducing the friction between the movable plate 19 and the base plate 14 and extending the service life of the movable plate 19.

[0033] refer to Figure 2 A groove 23 is provided on the rear side of the top of the base plate 14, and the bottom of the slide plate 13 is slidably connected to the inside of the groove 23.

[0034] As a technical optimization of this utility model, the groove 23 enables the slide plate 13 to move more stably and avoids tilting.

[0035] refer to Figure 2 An inclined block 24 is fixedly connected to the front of the fixed plate 17, and the bottom of the inclined block 24 is fixedly connected to the base plate 14.

[0036] As a technical optimization of this utility model, the setting of the inclined block 24 enables the fixing plate 17 to operate more stably, thereby increasing the stability of the fixing plate 17.

[0037] refer to Figure 2 A handle bend 25 is fixedly connected to the right side of the skateboard 13, and the handle bend 25 is used in conjunction with the skateboard 13.

[0038] As a technical optimization of this utility model, the design of the handle bend plate 25 makes it easier for users to pull the handle bend plate 25, thus increasing user convenience.

[0039] The working principle and usage process of this utility model are as follows: First, when the gas inside the battery pack is too large, it is transmitted to the airbag assembly 5 through the connecting plate 4. When the air pressure inside the airbag assembly 5 is too high, it pushes the sliding plate 13. The sliding plate 13 drives the toothed plate 12 to move to the left. The toothed plate 12 drives the toothed disc cover 9 to rotate, so that the top of the toothed disc cover 9 coincides with the air hole 10, so that the air passage is unobstructed. Then the internal air pressure will be discharged, thus achieving the effect of airbag depressurization to increase safety.

[0040] In summary, this pressure-relief safety battery pack changes the traditional method of pressure relief by using a pop-up valve. It employs overlapping vent 8 and vent 10 to release the accumulated air pressure inside the airbag assembly 5, thus protecting the surrounding battery packs from pressure compression, ensuring their lifespan, and increasing their safety.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 pressure-relief safety battery pack, comprising a housing assembly (1); Top shell assembly (2) disposed on top of housing assembly (1); Its features are: The top of the top shell assembly (2) is provided with a pressure relief mechanism (3). The pressure relief mechanism (3) includes a connecting plate one (4). The bottom of the connecting plate one (4) is connected to the top shell assembly (2). The top of the connecting plate one (4) is connected to an airbag assembly (5). The top of the airbag assembly (5) is connected to a connecting plate two (6). The top of the connecting plate two (6) is connected to an air outlet (7). The top of the air outlet (7) is provided with an air hole one (8). The top of the air outlet (7) is provided with a gear disc cover (9). The top of the gear disc cover (9) is provided with an air hole two (10). The air hole two (10) is used in conjunction with the air hole one (8). The gear disc cover (9) The top of the plate is connected to an L-shaped plate (11) via a bearing. The side of the L-shaped plate (11) away from the gear cover (9) is fixedly connected to the top shell assembly (2). A toothed plate (12) is provided on the back of the gear cover (9). The front of the toothed plate (12) meshes with the gear cover (9). A sliding plate (13) is fixedly connected to the right side of the bottom of the toothed plate (12). A bottom plate (14) is slidably connected to the bottom of the sliding plate (13). The bottom of the bottom plate (14) is fixedly connected to the top shell assembly (2). An L-shaped limiting rod (15) is fixedly connected to both the front and back of the connecting plate (6). The bottom of the L-shaped limiting rod (15) is fixedly connected to the top shell assembly (2).

2. The pressure-relief safety battery pack according to claim 1, characterized in that: A limiting mechanism (16) is fixedly connected to the top of the base plate (14). The limiting mechanism (16) includes a fixed plate (17). A spring (18) is fixedly connected to the back of the fixed plate (17). A movable plate (19) is fixedly connected to the back of the spring (18). The bottom of the movable plate (19) is slidably connected to the base plate (14). A limiting wheel rod one (20) is fixedly connected to the back of the movable plate (19). A limiting wheel rod two (21) is provided on the back of the limiting wheel rod one (20). The back of the limiting wheel rod two (21) is fixedly connected to the slide plate (13).

3. The pressure-relief safety battery pack according to claim 2, characterized in that: The top of the base plate (14) is provided with a moving groove (22), and the bottom of the moving plate (19) is slidably connected to the inside of the moving groove (22).

4. The pressure-relief safety battery pack according to claim 1, characterized in that: A groove (23) is provided on the rear side of the top of the base plate (14), and the bottom of the slide plate (13) is slidably connected to the inside of the groove (23).

5. A pressure-relief safety battery pack according to claim 2, characterized in that: The front of the fixing plate (17) is fixedly connected to an inclined block (24), and the bottom of the inclined block (24) is fixedly connected to the base plate (14).

6. A pressure-relief safety battery pack according to claim 1, characterized in that: A handle bend plate (25) is fixedly connected to the right side of the skateboard (13), and the handle bend plate (25) is used in conjunction with the skateboard (13).

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