Battery pack housing and battery pack

Abstract

This application provides a battery pack housing and a battery pack. The battery pack housing includes a housing body and a first explosion-proof valve. The housing body forms a module compartment for housing battery modules. The first explosion-proof valve is located on the side wall of the module compartment, and the opening pressure of the first explosion-proof valve is greater than or equal to 35 kPa and less than or equal to 45 kPa. By providing the first explosion-proof valve on the side wall of the module compartment, in the event of an abnormal situation such as a battery module exploding inside the module compartment, the opening of the first explosion-proof valve can quickly release pressure, reducing the risk of battery pack explosion. By setting the opening pressure of the first explosion-proof valve to be greater than or equal to 35 kPa and less than or equal to 45 kPa, the structure of the first explosion-proof valve can remain stable during normal operation of the battery pack or when the battery module is normally opening the valve to release pressure, thereby ensuring the structural stability of the battery pack housing under normal conditions.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack housing and a battery pack. Background Technology

[0002] As the primary source of electrical energy for electric vehicles, the stability and safety of the battery pack directly impact the safety of the vehicle's operation. The battery pack housing typically contains a pressure relief channel, and also features an explosion-proof valve connected to this channel. This allows for pressure relief through the pressure relief channel and the explosion-proof valve when the battery cells within the battery module are normally open.

[0003] However, when abnormal problems such as cell explosion occur in the battery module, the pressure inside the battery pack box will increase rapidly, and this pressure cannot be released in time through the conventional pressure relief channel. Therefore, conventional pressure relief channels still pose safety hazards when faced with problems such as cell explosion. Utility Model Content

[0004] The embodiments of this application provide a battery pack housing, a sensor assembly, and a battery pack, which can improve the safety hazards of battery packs when facing problems such as barrel explosion.

[0005] In a first aspect, embodiments of this application provide a battery pack housing, comprising:

[0006] The housing body has a module compartment for housing battery modules;

[0007] The first explosion-proof valve is located on the side wall of the module compartment; the opening pressure of the first explosion-proof valve is greater than or equal to 35 kPa and less than or equal to 45 kPa.

[0008] In one embodiment, an electrical compartment is further formed within the enclosure body. The enclosure body includes a first partition for separating the electrical compartment from the module compartment, and the first explosion-proof valve is disposed on the first partition.

[0009] In one embodiment, a buffer compartment is further formed within the housing body. The housing body includes a second partition for separating the buffer compartment from the module compartment. The first explosion-proof valve is disposed on the second partition.

[0010] In one embodiment, the module compartment is further configured to contain immersion liquid, and the first explosion-proof valve is configured to discharge the immersion liquid from the module compartment when opened.

[0011] In one embodiment, the first explosion-proof valve includes a one-way valve.

[0012] In one embodiment, the first explosion-proof valve includes:

[0013] The main body is connected to the side wall of the module compartment;

[0014] A pressure relief section is movably connected to the main body, and the pressure relief section has a pressure relief position and a sealing position;

[0015] An elastic element is connected between the main body and the pressure relief part, and the elastic element is used to provide a force to the pressure relief part so as to seal the pressure relief part and the main body.

[0016] In one embodiment, the first explosion-proof valve further includes a first sealing element and a second sealing element, wherein the first sealing element is disposed between the main body and the side wall of the module compartment; and the second sealing element is disposed between the main body and the pressure relief part.

[0017] In one embodiment, the compression of the first seal is greater than or equal to 13% and less than or equal to 40%.

[0018] In one embodiment, when the pressure relief part is in the pressure relief position, the pressure relief part is spaced apart from the second sealing member; when the pressure relief part is in the sealing position, the pressure relief part is sealed to the second sealing member, and the compression amount of the second sealing member is greater than or equal to 13% and less than or equal to 40%.

[0019] In one embodiment, the first seal is made of fluororubber; and / or, the second seal is made of fluororubber.

[0020] Secondly, embodiments of this application provide a battery pack, comprising:

[0021] The battery pack housing described in any of the above claims; and,

[0022] The battery module is located in the module compartment of the battery pack housing.

[0023] The beneficial effects of the embodiments of this application are as follows:

[0024] In the embodiments of this application, the battery pack housing includes a housing body and a first explosion-proof valve. The housing body forms a module compartment for housing battery modules. The first explosion-proof valve is located on the side wall of the module compartment, and the opening pressure of the first explosion-proof valve is greater than or equal to 35 kPa and less than or equal to 45 kPa. By providing the first explosion-proof valve on the side wall of the module compartment, in the event of an abnormal situation such as a battery module exploding inside the module compartment, the opening of the first explosion-proof valve can quickly release pressure, reducing the risk of battery pack explosion. By setting the opening pressure of the first explosion-proof valve to be greater than or equal to 35 kPa and less than or equal to 45 kPa, the structure of the first explosion-proof valve can remain stable during normal operation of the battery pack or when the battery module is normally opening the valve to release pressure, thereby ensuring the structural stability of the battery pack housing under normal conditions. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a battery pack housing provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of another battery pack housing provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the exploded structure of a first explosion-proof valve provided in an embodiment of this application;

[0029] Figure 4 This is a three-dimensional structural schematic diagram of a first explosion-proof valve provided in an embodiment of this application;

[0030] Figure 5 This is a cross-sectional view of a first explosion-proof valve in a sealed state, provided by an embodiment of this application.

[0031] Figure 6 This is a cross-sectional view of a first explosion-proof valve in a depressurized state, as provided in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the structure of a battery pack provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Battery pack;

[0035] 10. Battery pack housing; 11. Housing body; 111. Module compartment; 112. Electrical compartment; 113. Buffer compartment; 114. First partition; 115. Second partition; 12. First explosion-proof valve; 121. Main body; 122. Pressure relief part; 123. Elastic element; 124. First seal; 125. Second seal;

[0036] 20. Battery module. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0038] First, this application provides a battery pack housing; please refer to [link to relevant documentation]. Figure 1 and Figure 7 The battery pack housing 10 includes a housing body 11, which has a module compartment 111 for housing the battery module 20. The battery module 20 serves as the main power supply structure of the battery pack 1. By forming the module compartment 111 within the housing body 11, the battery module 20 is separated from other structures within the battery pack housing 10, thus providing a certain degree of protection and preventing interference between the battery module 20 and other structures within the battery pack housing 10, thereby ensuring the stability of the battery module 20.

[0039] The battery pack housing 10 includes a first explosion-proof valve 12, which is located on the side wall of the module compartment 111. The opening pressure of the first explosion-proof valve 12 is greater than or equal to 35 kPa and less than or equal to 45 kPa. By installing the first explosion-proof valve 12 on the side wall of the module compartment 111, in the event of an abnormal situation such as a burst in the battery module 20 inside the module compartment 111, the opening of the first explosion-proof valve 12 can quickly release pressure, reducing the risk of the battery pack 1 exploding. By setting the opening pressure of the first explosion-proof valve 12 to be greater than or equal to 35 kPa and less than or equal to 45 kPa, the structure of the first explosion-proof valve 12 can remain stable during normal operation of the battery pack 1 or when the battery module 20 is normally opening its valve to release pressure, thereby ensuring the structural stability of the battery pack housing 10 under normal conditions.

[0040] It should be noted that the housing body 11 is provided with a pressure relief channel (not shown in the figure) at the position of the pressure relief valve of the cell in the battery module 20. The housing body 11 is provided with a second explosion-proof valve (not shown in the figure) connected to the pressure relief channel. When the cell in the battery module 20 breaks through the pressure relief valve to release pressure normally, the high temperature gas generated by the pressure relief can flow through the pressure relief channel. When the pressure generated by the gas in the pressure relief channel reaches the opening pressure of the second explosion-proof valve, the second explosion-proof valve will open to release pressure, so as to reduce the risk of the battery pack 1 exploding.

[0041] The opening pressure of the second explosion-proof valve is less than that of the first explosion-proof valve 12. In other words, the second explosion-proof valve is used for normal pressure relief of the battery pack 1, while the first explosion-proof valve 12 is used for abnormal pressure relief of the battery pack 1, such as when the battery module 20 explodes. Since the opening pressure of the first explosion-proof valve 12 is greater than that of the second explosion-proof valve, the structure of the first explosion-proof valve 12 can remain stable during normal operation of the battery pack 1 or when the battery module 20 is normally opening its valve to relieve pressure. This ensures the structural stability of the battery pack housing 10 under normal conditions.

[0042] It should be noted that when the battery module 20 is normally depressurized, if the generated high-temperature gas cannot be discharged in time, the gas pressure in the module compartment 111 will increase. When the gas pressure reaches the opening pressure of the first explosion-proof valve 12, the first explosion-proof valve 12 can also be opened to assist in depressurization, so as to reduce the risk of battery pack 1 exploding.

[0043] In some embodiments, an electrical compartment 112 is further formed within the housing body 11. The housing body 11 includes a first partition 114, which separates the electrical compartment 112 from the module compartment 111. A first explosion-proof valve 12 is disposed on the first partition 114. The electrical compartment 112 is used to house electrical components, such as a battery management module. By using the first partition 114 to separate the electrical compartment 112 from the module compartment 111, the risk of interference between the battery module 20 and electrical components during the use of the battery pack 1 can be reduced, thereby ensuring the stability of the battery pack 1 during use.

[0044] By placing the first explosion-proof valve 12 on the first partition 114, in the event of a battery module 20 explosion, the high-temperature and high-pressure material inside the module compartment 111 can be released into the electrical compartment 112 through the first explosion-proof valve 12, providing a buffer space for the module compartment 111. Furthermore, a second explosion-proof valve for routine pressure relief can be connected to the electrical compartment 112. When the pressure inside the electrical compartment 112 rises due to a battery module 20 explosion, the second explosion-proof valve can be opened to release pressure promptly, ensuring smooth pressure relief in the event of a battery module 20 explosion, reducing the risk of battery pack 1 explosion, and providing personnel with more escape time, thus reducing the risk of accidents.

[0045] In some embodiments, please refer to Figure 2 The housing body 11 also includes a buffer chamber 113. The housing body 11 includes a second partition 115, which separates the buffer chamber 113 from the module compartment 111. A first explosion-proof valve 12 is located on the second partition 115. By forming a buffer chamber 113 within the housing body 11 and placing the first explosion-proof valve 12 on the second partition 115, in the event of a battery module 20 explosion or other problems in the module compartment 111, the high-temperature and high-pressure substances in the module compartment 111 can be depressurized through the first explosion-proof valve 12 into the buffer chamber 113. This provides a buffer space for the module compartment 111, preventing the high-pressure substances in the module compartment 111 from directly impacting the electrical components in the electrical compartment 112, thereby reducing the risk of damage to the electrical components or secondary accidents.

[0046] The buffer compartment 113 can be disposed between the module compartment 111 and the electrical compartment 112 to form a transition between the two compartments. Alternatively, the buffer compartment 113 and the electrical compartment 112 can be disposed on opposite sides of the module compartment 111, or the buffer compartment 113 and the electrical compartment 112 can be disposed along the circumference of the module compartment 111, etc., to separate the buffer compartment 113 and the electrical compartment 112, thereby protecting the electrical compartment 112 and further reducing the risk of damage to electrical components or secondary accidents within the electrical compartment 112.

[0047] It should be noted that the specific configuration of the module compartment 111, electrical compartment 112 and buffer compartment 113 can be selected and adjusted according to actual design requirements, and no special restrictions are imposed here.

[0048] It should be noted that a pressure relief channel connected to the second explosion-proof valve for normal pressure relief can also be provided on the second partition 115. When the pressure in the buffer chamber 113 increases due to the explosion of the battery module 20, the pressure can be relieved in time by opening the second explosion-proof valve. This ensures smooth pressure relief when the battery module 20 explodes, thereby reducing the risk of the battery pack 1 exploding. It also provides more escape time for personnel and reduces the risk of accidents.

[0049] In some embodiments, the module compartment 111 is also used to store immersion liquid, and the first explosion-proof valve 12 is used to discharge the immersion liquid in the module compartment 111 when it is opened, that is, the module compartment 111 is used to store the submerged battery module 20. Since the inner side of the first explosion-proof valve 12 is in direct contact with the immersion liquid in the immersion liquid cooling, the static pressure on the first explosion-proof valve 12 and the dynamic pressure of the battery pack 1 during the movement process are large, even greater than the pressure generated when the battery module 20 is normally depressurized. Based on the simulation results, this embodiment of the application sets the opening pressure of the first explosion-proof valve 12 to be greater than or equal to 35 kPa and less than or equal to 45 kPa, so that during the normal operation of the battery pack 1, the first explosion-proof valve 12 can withstand the static pressure generated by the immersion liquid and the dynamic pressure generated during the movement, so that the first explosion-proof valve 12 can maintain the stability of the structure, thereby ensuring the structural stability of the battery pack 1 under normal conditions.

[0050] In some embodiments, the first explosion-proof valve 12 is a one-way valve. That is, during the process of opening the first explosion-proof valve 12 to release pressure, if the pressure inside the module compartment 111 drops below the opening pressure of the first explosion-proof valve 12, the first explosion-proof valve 12 can return to its initial state and keep the module compartment 111 sealed. For example, for the submersible battery module 20, coolant can be injected into the module compartment 111 to cool the battery module 20 inside the module compartment 111, reducing the risk of secondary explosion or other problems in the battery module 20, thereby reducing the risk of the battery pack 1 exploding, and also providing personnel with a longer escape time, reducing the risk of accidents.

[0051] It should be noted that the first explosion-proof valve 12 can also be a grooved pressure relief valve, that is, the first explosion-proof valve 12 can also be a disposable explosion-proof valve. In this case, the function of the first explosion-proof valve 12 is only to release pressure in time when the battery module 20 in the module compartment 111 experiences a problem such as a burst. The specific structure of the first explosion-proof valve 12 can be selected and adjusted according to actual design requirements, and no special limitation is made here.

[0052] In some embodiments, please refer to Figure 3 and Figure 4The first explosion-proof valve 12 includes a main body 121, which is connected to the side wall of the module compartment 111. Fixing holes are provided on both the main body 121 and the side wall of the module compartment 111. Connectors can pass through these fixing holes to ensure the stability of the connection between the first explosion-proof valve 12 and the side wall of the module compartment 111.

[0053] The first explosion-proof valve 12 also includes a pressure relief part 122 and an elastic part. The pressure relief part 122 is movably connected to the main body part 121 and has a pressure relief position and a sealing position. The elastic element 123 is connected between the main body part 121 and the pressure relief part 122. The elastic element 123 is used to provide force to the pressure relief part 122 so that the pressure relief part 122 is sealed to the main body part 121. When the pressure relief part 122 is in the sealing position, the force of the elastic element 123 acting on the pressure relief part 122 is the opening pressure of the first explosion-proof valve 12.

[0054] Please see Figure 5 and Figure 6 , Figure 6 The direction of flow indicated by the middle arrow is the direction of pressure relief of the pressure-relieving material. When the battery module 20 in the module compartment 111 explodes, the pressure inside the module compartment 111 may reach or even exceed the opening pressure of the first explosion-proof valve 12. The pressure relief part 122 will move relative to the main body 121 under the action of the high-temperature and high-pressure material or immersion liquid in the module compartment 111, and move from the sealing position to the pressure relief position to relieve pressure on the module compartment 111. During this process, the elastic element 123 will be compressed, and the force exerted by the elastic element 123 on the pressure relief part 122 will also increase. The high-temperature and high-pressure material or immersion liquid in the module compartment 111 will flow along... Figure 6 The flow direction indicated by the middle arrow is the discharge direction.

[0055] When the pressure in the module compartment 111 is reduced to less than the force exerted by the elastic element 123 on the pressure relief part 122, the pressure relief part 122 will move from the pressure relief position to the sealing position under the action of the elastic element 123. When the pressure in the module compartment 111 is reduced to less than the opening pressure of the first explosion-proof valve 12, the pressure relief part 122 will move to the sealing position under the action of the elastic element 123 and be sealed and connected with the main body 121.

[0056] In some embodiments, please refer to Figure 5 and Figure 6The first explosion-proof valve 12 also includes a first sealing element 124 and a second sealing element 125. The first sealing element 124 is disposed between the main body 121 and the side wall of the module compartment 111 to achieve a sealed connection between the main body 121 and the side wall of the module compartment 111. The second sealing element 125 is disposed between the main body 121 and the pressure relief part 122 to achieve a sealed connection between the main body 121 and the pressure relief part 122. Through the arrangement of the first sealing element 124 and the second sealing element 125, while the first sealing element 124 ensures the sealing performance between the first explosion-proof valve 12 and the side wall of the module compartment 111, the second sealing element 125 ensures the sealing performance of the first explosion-proof valve 12 under normal conditions.

[0057] In some embodiments, the compression of the first seal 124 is greater than or equal to 13% and less than or equal to 40%. The first seal 124 is used for a sealing connection between the main body 121 and the side wall of the module compartment 111, and the main body 121 is fixedly connected to the side wall of the module compartment 111, so that the first seal 124 is always in a compressed state. If the compression of the first seal 124 is too small, it may result in poor sealing between the main body 121 and the side wall of the module compartment 111; if the compression of the first seal 124 is too large, it may result in the first seal 124 failing due to excessive deformation, thereby causing the seal between the main body 121 and the side wall of the module compartment 111 to fail.

[0058] In the actual manufacturing process, the compression amount of the first sealing element 124 can be set to 13%, 20%, 25%, 30%, 35% or 40%, etc. The specific value of its compression amount can be selected and adjusted according to the actual design requirements. It is only necessary to ensure effective sealing between the main body 121 and the side wall of the module compartment 111. No special restrictions are imposed here.

[0059] In some embodiments, please refer to Figure 6 When the pressure relief part 122 is in the pressure relief position, the pressure relief part 122 and the second seal 125 are spaced apart so that the high temperature and high pressure substances or immersion liquid in the module compartment 111 can be discharged through the gap between the pressure relief part 122 and the second seal 125, thereby achieving pressure relief.

[0060] When the pressure relief section 122 is in the sealed position, please refer to Figure 5The pressure relief part 122 is sealed to the second seal 125, and the compression of the second seal 125 is greater than or equal to 13% and less than or equal to 40%. That is, when the pressure relief part 122 is in the sealed position, it achieves a sealed connection with the main body part 121 through the second seal 125, at which time the second seal 125 is in a compressed state. If the compression of the second seal 125 is too small, the sealing performance between the pressure relief part 122 and the main body part 121 may be poor; if the compression of the second seal 125 is too large, the second seal 125 may fail due to excessive deformation, resulting in a failure of the seal between the pressure relief part 122 and the main body part 121.

[0061] In the actual manufacturing process, the compression amount of the second seal 125 can be set to 13%, 20%, 25%, 30%, 35%, or 40%, etc. The specific value of its compression amount can be selected and adjusted according to the actual design requirements. It is only necessary to ensure effective sealing between the pressure relief part 122 and the main body part 121. No special restrictions are imposed here.

[0062] In some embodiments, the first seal 124 is made of fluororubber; and / or, the second seal 125 is made of fluororubber. Compared to conventional EPDM rubber, silicone rubber, and natural rubber, fluororubber has better stability, especially in the submerged battery module 20, where the immersion liquid is mainly a hydrocarbon or silicone oil composite. Conventional EPDM rubber, silicone rubber, and natural rubber will swell upon contact with the immersion liquid, resulting in significant deformation of the seal and subsequent seal failure. In this embodiment, the first seal 124 and / or the second seal 125 are made of fluororubber, which effectively achieves compatibility with the immersion liquid, thereby ensuring the sealing performance of the first explosion-proof valve 12 and the side wall of the module compartment 111, as well as the sealing performance of the first explosion-proof valve 12 itself under normal conditions.

[0063] Secondly, this application provides a battery pack, which includes a battery pack housing. The specific structure of the battery pack housing is as described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0064] Please see Figure 7The battery pack 1 includes a battery pack housing 10 and a battery module 20, with the battery module 20 housed within a module compartment 111 of the battery pack housing 10. As the main power supply structure of the battery pack 1, the battery module 20 is isolated from other structures within the battery pack housing 10 by the module compartment 111, thus providing a degree of protection and preventing interference between the battery module 20 and other structures within the battery pack housing 10, thereby ensuring the stability of the battery module 20.

[0065] An electrical compartment 112 is also formed inside the battery pack housing 10, and the electrical compartment 112 is separated from the module compartment 111 by a first partition 114. The electrical compartment 112 is used to house electrical components, such as the battery management module. By using the first partition 114 to separate the electrical compartment 112 from the module compartment 111, the risk of interference between the battery module 20 and the electrical components during the use of the battery pack 1 can be reduced, thereby ensuring the stability of the battery pack 1 during use.

[0066] Specifically, the battery pack housing 10 includes a housing body 11 and a first explosion-proof valve 12. The housing body 11 forms a module compartment 111, which is used to house battery modules 20. The first explosion-proof valve 12 is located on the side wall of the module compartment 111, and the opening pressure of the first explosion-proof valve 12 is greater than or equal to 35 kPa and less than or equal to 45 kPa. By setting the first explosion-proof valve 12 on the side wall of the module compartment 111, in the event of an abnormal situation such as a burst in the battery module 20 inside the module compartment 111, the opening of the first explosion-proof valve 12 can quickly release pressure, reducing the risk of the battery pack 1 exploding. By setting the opening pressure of the first explosion-proof valve 12 to be greater than or equal to 35 kPa and less than or equal to 45 kPa, the structure of the first explosion-proof valve 12 can remain stable during normal operation of the battery pack 1 or when the battery module 20 is normally opening the valve to release pressure, thereby ensuring the structural stability of the battery pack 1 under normal conditions.

[0067] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery pack housing, characterized in that, include: The housing body has a module compartment for housing battery modules; The first explosion-proof valve is located on the side wall of the module compartment; the opening pressure of the first explosion-proof valve is greater than or equal to 35 kPa and less than or equal to 45 kPa.

2. The battery pack housing according to claim 1, characterized in that, An electrical compartment is also formed within the enclosure body. The enclosure body includes a first partition, which is used to separate the electrical compartment from the module compartment. The first explosion-proof valve is disposed on the first partition.

3. The battery pack housing according to claim 1, characterized in that, The housing body also has a buffer compartment, and the housing body includes a second partition, which is used to separate the buffer compartment from the module compartment. The first explosion-proof valve is located on the second partition.

4. The battery pack housing according to claim 1, characterized in that, The module compartment is also used to store immersion liquid, and the first explosion-proof valve is used to discharge the immersion liquid in the module compartment when it is opened.

5. The battery pack housing according to claim 1, characterized in that, The first explosion-proof valve includes a check valve.

6. The battery pack housing according to any one of claims 1 to 5, characterized in that, The first explosion-proof valve includes: The main body is connected to the side wall of the module compartment; A pressure relief section is movably connected to the main body, and the pressure relief section has a pressure relief position and a sealing position; An elastic element is connected between the main body and the pressure relief part, and the elastic element is used to provide a force to the pressure relief part so as to seal the pressure relief part and the main body.

7. The battery pack housing according to claim 6, characterized in that, The first explosion-proof valve further includes a first sealing element and a second sealing element. The first sealing element is disposed between the main body and the side wall of the module compartment; the second sealing element is disposed between the main body and the pressure relief part.

8. The battery pack housing according to claim 7, characterized in that, The compression of the first seal is greater than or equal to 13% and less than or equal to 40%.

9. The battery pack housing according to claim 7, characterized in that, When the pressure relief part is in the pressure relief position, the pressure relief part is spaced apart from the second sealing element. When the pressure relief part is in the sealing position, the pressure relief part is sealed to the second sealing element. The compression amount of the second sealing element is greater than or equal to 13% and less than or equal to 40%.

10. The battery pack housing according to claim 7, characterized in that, The first seal is made of fluororubber; and / or the second seal is made of fluororubber.

11. A battery pack, characterized in that, include: Battery pack housing as described in any one of claims 1 to 10; as well as, The battery module is located in the module compartment of the battery pack housing.

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