Battery gas release device and battery pack

Abstract

The invention provides a battery gas release device and a battery pack, and the battery gas release device is characterized in that a mounting base is provided with a gas hole, and the gas hole is communicated with the internal space of a reciprocating shell; the sliding block and the compression spring are fixedly arranged on the side, away from the reciprocating shell, of the sliding block dragging column, a cavity formed by the sliding block and the sliding block dragging column is communicated with the inner space of the reciprocating shell, the sliding block dragging column is in sliding connection with the sliding block, the sliding block dragging column is fixedly connected with the reciprocating shell, and the sliding block is in contact connection with the lower shell. The upper shell assembly is arranged in the lower shell in a sleeved mode, and the upper shell is connected with the spring. The device has the beneficial effects that the size of a gas releasing space can be adjusted according to the size of released gas, the device is suitable for various different working conditions, meanwhile, irreversible damage cannot be caused, the device can be repeatedly used, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of new energy, and in particular to a battery gas release device and a battery pack. Background Art

[0002] The new energy field has received more and more attention. As an important application in the new energy field, new energy electric vehicles have been widely developed and gradually entered people's lives. As the core power source of new energy electric vehicles, the power battery system provides driving force for new energy electric vehicles, and the power battery airflow guide device is an important component unit of the power battery system. It is the core component of the power battery system and plays a decisive role in the power battery system.

[0003] Although the balancing valves or explosion-proof valves currently used in soft-pack battery packs can guide airflow, they are not reusable, especially in the field of thermal diffusion battery pack testing. After use, they will cause irreversible damage and cannot be recycled, resulting in a waste of resources. Moreover, a balancing valve or explosion-proof valve only corresponds to one airflow pressure. Under different airflow pressure states, different numbers of balancing valves or explosion-proof valves are required, which are limited under the working conditions and have high use costs. Summary of the invention

[0004] The main purpose of the present invention is to provide a battery gas release device and a battery pack, aiming to solve the problem that the airflow guiding device is not reusable.

[0005] The present invention provides a battery gas release device, comprising:

[0006] An upper housing assembly, a lower housing assembly, a reciprocating housing assembly, and a mounting base;

[0007] The mounting base is provided with an air hole, and the air hole is communicated with the internal space of the reciprocating shell;

[0008] The lower housing assembly includes a lower housing, a slider, a slider drag column and a compression spring, wherein the compression spring is fixedly arranged on a side of the slider drag column away from the reciprocating housing, the cavity formed by the slider and the slider drag column is communicated with the internal space of the reciprocating housing, the slider drag column is slidably connected to the slider, the slider drag column is fixedly connected to the reciprocating housing, and the slider is in contact connection with the lower housing;

[0009] The upper shell assembly is sleeved in the lower shell, and the upper shell is connected to the compression spring.

[0010] Furthermore, the slider is a special-shaped slider, and the special-shaped slider includes a first shaped slider bevel and a second shaped slider bevel, and the first shaped slider bevel and the second shaped slider bevel are respectively arranged on both sides of the special-shaped slider for abutting the upper shell assembly.

[0011] Furthermore, the upper shell assembly includes an upper shell, and two protruding structures that are adapted to the first inclined surface of the special-shaped slider and the second inclined surface of the special-shaped slider. The upper shell and the two protruding structures are integrally formed, and the two protruding structures correspond one-to-one with and are contact-connected with the first inclined surface of the special-shaped slider and the second inclined surface of the special-shaped slider, respectively.

[0012] Furthermore, a limiting platform is provided on one side of the slider dragging column close to the compression spring, and the limiting platform is used to abut against the compression spring.

[0013] Furthermore, a side of the slider drag column close to the reciprocating shell is provided with a cavity, and the slider is provided in the cavity.

[0014] Furthermore, a gas circulation channel is provided on the reciprocating shell assembly, and the slider drag column extends into the gas circulation channel and is fixedly connected to the reciprocating shell assembly.

[0015] Furthermore, a first drag post hole is provided on the portion of the slider drag post extending into the gas circulation channel, and a second drag post hole adapted to the first drag post hole is provided on the side wall of the gas circulation channel, and the drag post is used to pass through the first drag post hole and the second drag post hole to fix the slider drag post to the reciprocating shell assembly.

[0016] Furthermore, a telescopic blocking plug is provided between the side wall of the gas circulation channel and the slider.

[0017] Further, the lower housing assembly comprises a lower shell and a retractable support card assembly, and the retractable support card assembly is fixedly mounted on the lower shell;

[0018] The mounting base comprises a sealing plug and a base body, wherein the sealing plug is connected to the mounting base body and is arranged on a side of the mounting base body close to the slider, and the retractable support card assembly is used to abut against the sealing plug.

[0019] Furthermore, the mounting base further comprises an umbrella-shaped limit block, the umbrella-shaped limit block is fixedly connected to the mounting base body, and the umbrella-shaped limit block extends into the inner space of the reciprocating shell.

[0020] Furthermore, the retractable support card assembly includes a limit head, a connecting column, a retractable support card assembly compression spring and a dragging block, one end of the connecting column is fixedly connected to the limit head, and the other end is fixedly connected to the dragging block, the retractable support card assembly compression spring is sleeved on the connecting column, the limit head is fixedly connected to the lower outer shell, and the dragging block is used to abut the sealing plug.

[0021] Furthermore, a mounting hole is provided on the mounting base, and the mounting hole is used for fixed connection with the battery pack body.

[0022] The present invention also provides a battery pack, characterized in that it comprises a battery pack body and any one of the gas release devices described above, the battery pack body is fixedly connected to the gas release device, and the gas exhaust port of the battery pack body is connected to the air hole.

[0023] The beneficial effects of the present invention are as follows: when thermal runaway of the battery pack occurs, resulting in the generation of a large amount of gas, a large amount of gas will enter the internal space of the reciprocating shell through the pores, causing the slider to drive the slider drag column to move upward to compress the compression spring, thereby causing the lower shell to move upward, and the overlapping space between the upper shell assembly and the lower shell assembly will become larger, thereby driving the reciprocating shell assembly to move upward, causing the pores to be directly connected to the external atmosphere, thereby achieving the effect of releasing gas. The space between the reciprocating shell assembly and the pores can be adjusted according to the size of the released gas, thereby achieving dynamic adjustment of the size of the space for releasing gas. It is suitable for a variety of different working conditions, and at the same time will not cause irreversible damage. It can be reused, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic cross-sectional view of a battery gas release device according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A partially enlarged schematic diagram of

[0026] Figure 3 is a schematic cross-sectional view of another battery gas release device according to an embodiment of the present invention;

[0027] Figure 4 is a partial schematic cross-sectional view of another battery pack according to an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of a battery gas release device according to an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of another battery gas release device according to an embodiment of the present invention;

[0030] Figure 7is a schematic diagram of a battery pack according to an embodiment of the present invention;

[0031] Figure 8 is a partial schematic diagram of a battery pack according to an embodiment of the present invention;

[0032] Fig. 9 yes Figure 8 A partially enlarged schematic diagram of

[0033] Fig.10 is a schematic diagram of a mounting base according to an embodiment of the present invention;

[0034] Fig.11 is a schematic diagram of a sealing plug according to an embodiment of the present invention;

[0035] Fig.12 is a schematic diagram of a retractable tray assembly according to an embodiment of the present invention;

[0036] Fig.13 is a schematic diagram of a reciprocating housing according to an embodiment of the present invention;

[0037] Fig.14 is a schematic diagram of a drag column according to an embodiment of the present invention;

[0038] Fig.15 is a schematic diagram of a slider drag column according to an embodiment of the present invention;

[0039] Fig.16 is a schematic diagram of an upper housing assembly according to an embodiment of the present invention;

[0040] Fig.17 is a schematic diagram of a lower housing assembly according to an embodiment of the present invention;

[0041] Fig.18 is a schematic cross-sectional view of a lower housing assembly according to an embodiment of the present invention;

[0042] Fig.19 is a schematic diagram of a special-shaped slider according to an embodiment of the present invention;

[0043] Fig. 20 It is a schematic diagram of a lower housing assembly and an upper housing assembly according to an embodiment of the present invention.

[0044] Figure 1-20Middle: 1. Upper shell assembly; 2. Lower shell assembly; 3. Reciprocating shell assembly; 4. Mounting base; 5. Retractable support card assembly; 6. Drag column; 7. Air hole; 8. Mounting hole; 9. Sealing plug perforation; 10. Sealing plug; 11. Protruding structure; 12. Limiting platform; 13. Special-shaped slider; 14. Compression spring; 15. Slider drag column; 16. Umbrella-shaped limiting block; 17. Upper shell; 18. Retractable support card assembly compression spring; 19. Limiting head; 20 , connecting column; 21, reciprocating shell shell; 22, gas flow channel; 23, first pulling and dragging column hole; 24, dragging table block; 25, telescopic blocking plug; 26, column; 30, first inclined surface of special-shaped slider; 31, second inclined surface of special-shaped slider; 33, second pulling and dragging column hole; 34, slider dragging column wedge-shaped slide; 38, fixing bolt; 40, third inclined surface of special-shaped slider; 42, lower shell; 43, compression spring limit device; 100, battery pack body.

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0048] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0049] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Reference Figure 1 , 3 -7 and 17, the present invention provides a battery gas release device, comprising:

[0051] An upper housing assembly 1, a lower housing assembly 2, a reciprocating housing assembly 3 and a mounting base 4;

[0052] The mounting base 4 is provided with an air hole 7, and the air hole 7 is communicated with the internal space of the reciprocating shell;

[0053] The lower housing assembly 2 includes a lower housing, a slider, a slider drag column 15 and a compression spring 14. The compression spring 14 is fixed to a side of the slider drag column 15 away from the reciprocating housing. The cavity formed by the slider and the slider drag column 15 is communicated with the internal space of the reciprocating housing. The slider drag column 15 is slidably connected to the slider, the slider drag column 15 is fixedly connected to the reciprocating housing, and the slider is in contact with the lower housing.

[0054] The upper shell assembly 1 is sleeved in the lower shell, and the upper shell is connected to the compression spring.

[0055] In this embodiment, the air hole 7 is connected to the internal space of the reciprocating shell, and then the cavity formed by the slider and the slider drag column 15 is connected to the internal space of the reciprocating shell. When thermal runaway of the battery pack occurs, resulting in the generation of a large amount of gas, a large amount of gas will enter the internal space of the reciprocating shell through the air hole 7, and enter the cavity formed by the slider and the slider drag column 15, giving the slider an air pressure. After the slider is subjected to the air pressure, it will move toward the side away from the internal space of the reciprocating shell, causing the slider to drive the slider drag column 15 to move upward to compress the compression spring 14, thereby causing the lower shell to move upward, and the space where the upper shell assembly 1 and the lower shell assembly 2 overlap will become larger, thereby driving the reciprocating shell assembly 3 to move upward, causing the air hole 7 to be directly connected to the external atmosphere, thereby achieving the effect of releasing gas. In the process of gradually decreasing the pressure of the released gas, the compression spring 14 will gradually release the force compressed in the compression spring 14. At the same time, under the action of the gravity of the lower shell assembly 2 and the reciprocating shell assembly 3, the lower shell assembly 2 and the reciprocating shell assembly 3 will gradually move downward, and finally The air hole 7 will be connected to the internal space of the reciprocating shell assembly 3, and the air hole 7 will be isolated from the external atmosphere, thereby realizing the self-recovery process. The device can be reused for exhaust multiple times. Moreover, since the gas is released by the expansion and contraction of the compression spring 14, when the amount of released gas is large, the force provided to the compression spring 14 is also greater, so the space for the slider drag column 15 to pull the reciprocating shell assembly 3 up is also larger, so that the space between the reciprocating shell assembly 3 and the air hole 7 is also larger, and more gas is discharged. On the contrary, if the amount of released gas is small, the force provided to the compression spring 14 is also smaller, so the space for the slider drag column 15 to pull the reciprocating shell assembly 3 up is also smaller, so that the space between the reciprocating shell assembly 3 and the air hole 7 is also smaller, and the discharged gas is also reduced. Therefore, the space between the reciprocating shell assembly 3 and the air hole 7 can be adjusted according to the size of the released gas, thereby realizing dynamic adjustment of the size of the space for releasing gas, which is suitable for a variety of different working conditions, and will not cause irreversible damage at the same time. It can be reused, saving costs.

[0056] In one embodiment, the upper shell assembly 1, the lower shell assembly 2, the reciprocating shell assembly 3 and the mounting base 4 are all cylindrical. In some other embodiments, the upper shell assembly 1, the lower shell assembly 2, the reciprocating shell assembly 3 and the mounting base 4 may also be a rectangular parallelepiped, a cube, etc.

[0057] Reference Figure 1 , 3, 4 and 19, in one embodiment, the slider is a special-shaped slider 13, and the special-shaped slider 13 includes a first inclined surface 30 of the special-shaped slider and a second inclined surface 31 of the special-shaped slider, and the first inclined surface 30 of the special-shaped slider and the second inclined surface 31 of the special-shaped slider are respectively arranged on both sides of the special-shaped slider 13 for abutting the upper shell assembly.

[0058] In this embodiment, the special-shaped slider 13 can be provided to increase the contact area with the internal space of the reciprocating housing, and can also be provided with a matching protruding structure 11 on the lower housing to facilitate the movement of the special-shaped slider 13. It should be noted that the slider can also be a square slider, a rectangular slider, a parallelogram, etc., and the present application does not limit this. Specifically, the special-shaped slider includes a first slope 30 of the special-shaped slider, a second slope 31 of the special-shaped slider, and a third slope 40 of the special-shaped slider. The first slope 30 of the special-shaped slider and the second slope 31 of the special-shaped slider respectively abut against the protruding structure 11 to facilitate the sliding of the special-shaped slider. The third slope 40 of the special-shaped slider can increase the contact area with the internal space of the reciprocating housing assembly 3, and can also facilitate the sliding between the special-shaped slider and the slider drag column 15.

[0059] Reference Figure 1 , 3 , 4 and 16, in one embodiment, the upper shell assembly 1 includes an upper shell 17, and two protruding structures 11 adapted to the first inclined surface 30 of the special-shaped slider and the second inclined surface 31 of the special-shaped slider, the upper shell 17 and the two protruding structures 11 are integrally formed, and the two protruding structures 11 correspond to and are in contact with the first inclined surface 30 of the special-shaped slider and the second inclined surface 30 of the special-shaped slider, respectively.

[0060] In this embodiment, the protruding structure 11 can increase the area of ​​the special-shaped slider 13, so that the special-shaped slider 13 can slide on the protruding structure 11, and at the same time, the special-shaped slider 13 can be limited to prevent it from moving in other directions.

[0061] Reference Fig.16 In one embodiment, the upper shell assembly 1 further includes a compression spring limiting device 43 , which is integrally formed with the upper shell 17 , and is used to limit the compression spring 14 .

[0062] Reference Figure 1 , 3 , 4 and 18, in one embodiment, a limiting platform 12 is further provided on a side of the slider dragging column 15 close to the compression spring 14, and the limiting platform 12 is used to abut against the compression spring 14.

[0063] In this embodiment, the limiting platform 12 abuts against the compression spring 14 , so that the compression spring 14 can be compressed under the action of the limiting platform 12 .

[0064] Reference Fig.15 and 18 In one embodiment, a side of the slider dragging column 15 close to the reciprocating shell is provided with a cavity, and the slider is provided in the cavity.

[0065] In this embodiment, the slider is arranged in the cavity so that the slider can abut against the slider drag column 15, and then when the slider moves, the slider drag column 15 is driven to move, and the slider is arranged in the cavity, and the slider can be limited by the slider drag column 15. In some embodiments, the slider can also be arranged on the side of the slider drag column 15, and it can be limited by other devices, and the slider drag column 15 is arranged in the cavity to form a slider drag column wedge-shaped slide 34 of the special-shaped slider, so that the special-shaped slider can slide back and forth in the slider drag column wedge-shaped slide 34.

[0066] Reference Figure 1 , 3 , 4 and 13 In one embodiment, the reciprocating shell assembly 3 is provided with a gas circulation channel 22, and the slider drag column 15 extends into the gas circulation channel 22 and is fixedly connected to the reciprocating shell assembly 3.

[0067] In this embodiment, a gas circulation channel 22 is provided, and the slider drag column 15 can be extended into the gas circulation channel 22. On the one hand, it can facilitate the installation between the slider drag column 15 and the reciprocating shell assembly 3. On the other hand, the gas circulation channel 22 can increase the contact area between the slider drag column 15 and the reciprocating shell assembly 3, thereby preventing gas from overflowing from between the slider drag column 15 and the reciprocating shell assembly 3. The reciprocating shell shell 21 and the mounting base form an internal space.

[0068] Reference Figure 13-15 and 20. In one embodiment, a first drag post hole 23 is provided on the portion of the slider drag post 15 extending into the gas circulation channel 22, and a second drag post hole 33 adapted to the first drag post hole 23 is provided on the side wall of the gas circulation channel 22. The drag post 6 is used to pass through the first drag post hole 23 and the second drag post hole 33 to fix the slider drag post 15 to the reciprocating shell assembly 3.

[0069] In this embodiment, by providing a first drag column hole 23 on the portion of the slider drag column 15 extending into the gas circulation channel 22, and providing a second drag column hole 33 on the side wall of the gas circulation channel 22 that is compatible with the first drag column hole 23, the slider drag column 15 can be fixedly connected to the reciprocating shell assembly 3, thereby driving the reciprocating shell assembly 3 to move when the slider drag column 15 moves.

[0070] Reference Figure 1 , 3 , 4 and 18, in one embodiment, a telescopic blocking plug 25 is further provided between the side wall of the gas circulation channel 22 and the slider.

[0071] In this embodiment, a telescopic blocking plug 25 is further provided between the side wall of the gas circulation channel 22 and the slider, which can isolate the cavity formed between the slider and the slider drag column 15 from the outside and prevent gas overflow. The telescopic blocking plug 25 is an elastic member, which can fill the space where the slider moves when the slider moves upward, so that the cavity formed between the slider and the slider drag column 15 is always in a sealed state with the outside.

[0072] Reference Figure 1-4 And 11-12, in one embodiment, the lower housing assembly 2 includes a lower shell and a retractable support card assembly 5, and the retractable support card assembly 5 is fixed on the lower shell;

[0073] The mounting base 4 includes a sealing plug 10 and a base body, the sealing plug 10 is connected to the base body, and the sealing plug 10 is arranged on a side of the base body close to the slider, wherein a column 26 is provided on the base body for abutting against the sealing plug through hole 9 of the sealing plug 10, so that the sealing plug 10 can be easily sleeved on the column 26.

[0074] In this embodiment, the retractable support card assembly 5 is used to abut the sealing plug 10, so that the air hole 7 can be isolated from the internal space of the reciprocating shell. Only when a large amount of gas impacts the retractable support card assembly 5, the retractable support card assembly 5 will shrink, and the gas will enter the internal space of the reciprocating shell.

[0075] Reference Figure 1 , 3 , 4 and 10 In one embodiment, the mounting base 4 further includes an umbrella-shaped limit block 16, the umbrella-shaped limit block 16 is fixedly connected to the base body, and the umbrella-shaped limit block 16 extends into the internal space of the reciprocating shell.

[0076] In this embodiment, if the explosive force of the gas is particularly strong, a large amount of gas will gush out, which may cause the reciprocating shell to explode. Therefore, an umbrella-shaped limit block 16 is provided, which forms a limiting effect with the retractable support card assembly 5 to prevent the reciprocating shell from being separated from the base. Specifically, the umbrella-shaped limit block 16 is detachably connected to the column 26. When the sealing plug 10 is sleeved on the column 26, it can be connected to the column 26 through the umbrella-shaped limit block 16, thereby realizing the limitation of the sealing plug 10.

[0077] Reference Figure 2 and 11 -12. In one embodiment, the retractable support card assembly 5 includes a limit head 19, a connecting column 20, a retractable support card assembly compression spring 18 and a dragging block 24. One end of the connecting column 20 is fixedly connected to the limit head 19, and the other end is fixedly connected to the dragging block 24. The retractable support card assembly compression spring 18 is sleeved on the connecting column 20. The limit head 19 is fixedly connected to the lower outer shell, and the dragging block 24 is used to abut the sealing plug 10.

[0078] In this embodiment, the limit head 19 can be used to limit the reciprocating shell to prevent the entire retractable support card assembly 5 from moving inward or even detaching, and the limit head 19 can also play a role in gas isolation. The connecting column 20 is provided so that the retractable support card assembly compression spring 18 can be sleeved on the connecting column 20 to achieve the contraction of the retractable support card assembly 5. The dragging block 24 is used to abut the sealing plug 10. In a preferred embodiment, the abutment can be carried out in an inclined manner. On the one hand, the contact area with the gas can be increased, so that when thermal runaway occurs, the retractable support card assembly compression spring 18 can be compressed in time, so that the dragging block 24 moves in the direction of the retractable support card assembly compression spring 18.

[0079] Reference Figure 9-10 In one embodiment, a mounting hole 8 is further provided on the mounting base 4 , and the mounting hole 8 is used for fixed connection with the battery pack body 100 .

[0080] Reference Figure 4 and 7 -9. The present invention also provides a battery pack, comprising a battery pack body 100 and any of the gas release devices described above, wherein the battery pack body 100 is fixedly connected to the gas release device, and the gas outlet of the battery pack body 100 is connected to the air hole 7.

[0081] In this embodiment, the mounting base 4 can be fixedly connected to the battery pack body 100 through the mounting hole 8 on the mounting base 4, and then the gas outlet of the battery pack body 100 is connected to the gas hole 7, so that the gas discharge of the battery pack body 100 can be achieved. It should be noted that part of the mounting base 4 needs to extend into the battery pack body 100 and be fixedly connected to the outer shell of the battery pack body 100 through the fixing bolts 38. In one embodiment, the mounting base 4 can also be set on the outside of the battery pack body 100 and fixedly connected to the outer shell of the battery pack body 100.

[0082] The beneficial effects of the present invention are as follows: when thermal runaway of the battery pack occurs, resulting in the generation of a large amount of gas, a large amount of gas will enter the internal space of the reciprocating shell through the pore 7, causing the slider to drive the slider drag column 15 to move upward to compress the compression spring 14, thereby causing the lower shell to move upward, and the overlapping space between the upper shell component 1 and the lower shell component 2 will become larger, thereby driving the reciprocating shell component 3 to move upward, causing the pore 7 to be directly connected to the external atmosphere, thereby achieving the effect of releasing gas. The space between the reciprocating shell component 3 and the pore 7 can be adjusted according to the size of the released gas, thereby achieving dynamic adjustment of the size of the space for releasing gas, which is suitable for a variety of different working conditions, and will not cause irreversible damage. It can be reused, saving costs.

[0083] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, device, article or method. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, device, article or method including the element.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A battery gas release device, characterized in that: include: An upper housing assembly, a lower housing assembly, a reciprocating housing assembly, and a mounting base; The mounting base is provided with an air hole, and the air hole is communicated with the internal space of the reciprocating shell; The lower housing assembly includes a lower housing, a slider, a slider drag column and a compression spring, wherein the compression spring is fixedly arranged on a side of the slider drag column away from the reciprocating housing, the cavity formed by the slider and the slider drag column is communicated with the internal space of the reciprocating housing, the slider drag column is slidably connected to the slider, the slider drag column is fixedly connected to the reciprocating housing, and the slider is in contact connection with the lower housing; The upper shell assembly is sleeved in the lower shell, and the upper shell is connected to the compression spring.

2. The battery gas release device according to claim 1, characterized in that: The slider is a special-shaped slider, and the special-shaped slider includes a first inclined surface of the special-shaped slider and a second inclined surface of the special-shaped slider. The first inclined surface of the special-shaped slider and the second inclined surface of the special-shaped slider are respectively arranged on both sides of the special-shaped slider for abutting the upper shell component.

3. The battery gas release device according to claim 2, characterized in that: The upper shell assembly includes an upper shell and two protruding structures that are adapted to the first inclined surface of the special-shaped slider and the second inclined surface of the special-shaped slider. The upper shell and the two protruding structures are integrally formed, and the two protruding structures correspond to and are contact-connected with the first inclined surface of the special-shaped slider and the second inclined surface of the special-shaped slider respectively.

4. The battery gas release device according to claim 1, characterized in that: A limiting platform is also provided on one side of the slider dragging column close to the compression spring, and the limiting platform is used to abut against the compression spring.

5. The battery gas release device according to claim 1, characterized in that: A side of the slider dragging column close to the reciprocating shell is provided with a cavity, and the slider is arranged in the cavity.

6. The battery gas release device according to claim 5, characterized in that: The reciprocating shell assembly is provided with a gas circulation channel, the slider drag column is extended into the gas circulation channel and is fixedly connected to the reciprocating shell assembly.

7. The battery gas release device according to claim 6, characterized in that: A first drag post hole is provided on the portion of the slider drag post extending into the gas circulation channel, and a second drag post hole adapted to the first drag post hole is provided on the side wall of the gas circulation channel. The drag post is used to pass through the first drag post hole and the second drag post hole to fix the slider drag post to the reciprocating shell assembly.

8. The battery gas release device according to claim 6, characterized in that: A telescopic blocking plug is also arranged between the side wall of the gas flow channel and the slider.

9. The battery gas release device according to claim 1, characterized in that: The lower housing assembly comprises a lower shell and a retractable support card assembly, wherein the retractable support card assembly is fixedly mounted on the lower shell; The mounting base comprises a sealing plug and a base body, wherein the sealing plug is connected to the mounting base body and is arranged on a side of the mounting base body close to the slider, and the retractable support card assembly is used to abut against the sealing plug.

10. The battery gas release device according to claim 9, characterized in that: The mounting base further comprises an umbrella-shaped limiting block, the umbrella-shaped limiting block is fixedly connected to the mounting base body, and the umbrella-shaped limiting block extends into the inner space of the reciprocating shell.

11. The battery gas release device according to claim 9, characterized in that: The retractable support card assembly includes a limit head, a connecting column, a retractable support card assembly compression spring and a dragging block. One end of the connecting column is fixedly connected to the limit head, and the other end is fixedly connected to the dragging block. The retractable support card assembly compression spring is sleeved on the connecting column, the limit head is fixedly connected to the lower outer shell, and the dragging block is used to abut the sealing plug.

12. The battery gas release device according to claim 1, characterized in that: The mounting base is also provided with a mounting hole, and the mounting hole is used for fixed connection with the battery pack body.

13. A battery pack, characterized in that: It comprises a battery pack body and the gas release device according to any one of claims 1 to 12, wherein the battery pack body is fixedly connected to the gas release device, and the gas exhaust port of the battery pack body is connected to the air hole.

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