Battery module and vehicle

Abstract

This application provides a battery module and a vehicle. The battery module includes a housing cavity and a battery body and a filter cavity disposed within the housing cavity. The air inlet of the filter cavity is connected to the explosion-proof valve of the battery module, and the other end of the filter cavity is the exhaust end. The filter cavity is used to filter particulate matter in the thermal runaway gas discharged from the explosion-proof valve. The filter cavity is disposed on the periphery of the battery body and forms a frame beam supporting the battery module. Because the particulate matter in the thermal runaway gas discharged from the battery module is reduced, the content of combustibles is lowered, thus reducing the probability of combustion of the battery module. Furthermore, the original frame beam in the battery module is eliminated, and the filter cavity forms the frame beam structure of the battery module. The filter cavity serves both to support the battery module and to filter particulate matter in the thermal runaway gas. By setting the above-mentioned filter cavity, the effect of filtering particulate matter in the thermal runaway gas can be achieved without reducing the energy density of the battery module.

Description

Technical Field

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

[0002] With the rapid development of new energy technologies in my country, the proportion of new energy vehicles in the market has been gradually increasing in recent years. However, this technological progress has also brought negative consequences. A rare occurrence is the thermal runaway of new energy vehicles due to impacts to the chassis during operation. This battery pack thermal runaway is accompanied by the emission of large amounts of smoke and particles. On the one hand, this causes public panic; on the other hand, the high temperature and high speed of the smoke and particles can cause secondary damage to vehicle components, easily leading to vehicle fires. Therefore, for those skilled in the art, solving the problem of new energy vehicle fires caused by battery module thermal runaway is urgently needed. Summary of the Invention

[0003] In view of this, this application provides a battery module that solves the problem of fires in new energy vehicles caused by thermal runaway of the battery module. This application also provides a vehicle including the above-mentioned battery module.

[0004] To achieve the above objectives, this application provides the following technical solution: A battery module includes a receiving cavity, a battery body, and a filter cavity disposed within the receiving cavity; the air inlet of the filter cavity is connected to an explosion-proof valve of the battery module, and the other end of the filter cavity is an exhaust end; the filter cavity is used to filter particulate matter in the thermal runaway gas discharged from the explosion-proof valve; wherein... The filter cavity is located on the periphery of the battery body and forms a frame beam that supports the battery module.

[0005] Optionally, the battery module may also include: A baffle plate, connected to the bottom wall of the filter chamber, is used to block particulate matter in the thermal runaway gas; A flow guide plate, connected to the top wall of the filter chamber, is used to guide the thermal runaway gas.

[0006] Optionally, multiple baffles and guide plates are provided within the accommodating cavity, and the baffles and guide plates are alternately and spaced apart in the flow direction of the thermal runaway gas.

[0007] Optionally, in the flow direction of the thermal runaway gas, the projections of the baffle plate and the guide plate partially overlap.

[0008] Optional, In the flow direction of the thermal runaway gas, the angle between the plane where the guide plate is located and the top wall of the filter cavity is R1, where R1 satisfies: 30°≤R1≤60°; And / or, In the direction of the flow of the thermal runaway gas, the angle between the plane of the baffle plate and the bottom wall of the filter chamber is R2, where R2 satisfies: 120°≤R2≤150°.

[0009] Optionally, the baffle plate and the guide plate are arranged in parallel.

[0010] Optionally, the filter chamber includes multiple filters disposed on different sidewalls of the battery body, and the multiple filter chambers are connected end to end.

[0011] Optionally, it also includes a cyclone separator, one end of which is connected to the explosion-proof valve via a first connecting pipe, and the other end of which is connected to the air inlet of the filter chamber via a second connecting pipe; the cyclone separator includes an arc-shaped portion, and the axial direction of the first connecting pipe is tangent to the arc-shaped portion, so as to introduce the thermal runaway gas into the cyclone separator through the arc-shaped portion and form a vortex in the cyclone separator.

[0012] Optionally, the cyclone separator includes: The body cavity is connected to the first connecting pipe; The cavity is narrowed, with its flared end connected to the main body cavity and its narrowed end connected to the second connecting tube. An exhaust pipe extending into the constricted cavity is provided along the axial direction of the cyclone separator. The exhaust pipe and the constricted cavity are coaxially arranged, and the diameter of the exhaust pipe is smaller than the diameter of the second connecting pipe.

[0013] A vehicle comprising the battery module described in any of the preceding claims.

[0014] The battery module provided in this application includes a housing cavity and a battery body and a filter cavity disposed within the housing cavity. The air inlet of the filter cavity is connected to the explosion-proof valve of the battery module, and the other end of the filter cavity is the exhaust end. The filter cavity is used to filter particulate matter in the thermal runaway gas discharged from the explosion-proof valve. Thus, when the battery cell of the battery module experiences thermal runaway, since particulate matter in the thermal runaway gas discharged during thermal runaway is a major cause of fires in new energy electric vehicles, the thermal runaway gas is introduced into the filter cavity through the air inlet. The filter cavity filters the particulate matter carried in the thermal runaway gas, thereby reducing the particulate matter carried in the thermal runaway gas, or eliminating particulate matter from the thermal runaway gas discharged from the battery module. This design reduces the particulate matter in the thermal runaway gas discharged from the battery module, lowering the content of combustibles and reducing the probability of the battery module catching fire. Furthermore, since particulate matter is a major cause of smoke formation, this design can also reduce or even prevent the formation of smoke from the thermal runaway gas discharged from the battery module, thereby reducing public panic.

[0015] Furthermore, the filter chamber is located on the periphery of the battery body, forming a frame beam supporting the battery module. In other words, the original frame beam in the battery module is eliminated, and the filter chamber becomes the frame beam structure of the battery module. With this configuration, the filter chamber can both support the battery module and filter particulate matter from the thermal runaway gas; that is, by setting up the filter chamber, it is possible to filter particulate matter from the thermal runaway gas without reducing the energy density of the battery module. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a perspective view of the battery module provided in this embodiment.

[0018] Figure 2 This is a schematic diagram of the battery module.

[0019] Figure 3 This is a schematic diagram of the structure of the cyclone separator, the first connecting pipe, the second connecting pipe, and the exhaust pipe.

[0020] Figure 4 This is a schematic diagram of the filter chamber.

[0021] exist Figures 1 to 4 middle: 1-Accommodation cavity, 2-Battery body, 3-Filter cavity, 4-Explosion-proof valve, 5-Baffle plate, 6-Guide plate, 7-Swirl converter, 8-First connecting pipe, 9-Second connecting pipe, 10-Exhaust pipe; 301-Intake end, 302-Exhaust end, 701-Main body cavity, 702-Contraction cavity. Detailed Implementation

[0022] This application provides a battery module that solves the problem of fires in new energy vehicles caused by thermal runaway of the battery module. This application also provides a vehicle including the aforementioned battery module.

[0023] 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 some embodiments of this application, and not all 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.

[0024] like Figures 1 to 4 As shown in the illustration, this application provides a battery module for supplying electrical energy to a vehicle. On one hand, the battery module provides a power source for the vehicle, ensuring its normal operation; on the other hand, it also provides electrical energy to ensure the normal operation of various electrical components within the vehicle. The battery module includes a receiving cavity 1, a battery body 2, and a filter cavity 3 disposed within the receiving cavity 1. Specifically, the receiving cavity 1 provides space for the battery body 2 and the filter cavity 3. The battery body 2 includes multiple battery cells connected in series or / or in parallel. The air inlet 301 of the filter cavity 3 is connected to the explosion-proof valve 4 of the battery module, and the other end of the filter cavity 3 is an exhaust end 302. The filter cavity 3 is used to filter particulate matter carried in the thermal runaway gas discharged from the explosion-proof valve 4. Specifically, when a cell in the battery body 2 of the battery module experiences thermal runaway, thermal runaway gas is discharged through the explosion-proof valve 4. The thermal runaway gas is introduced into the filter chamber 3 through the explosion-proof valve 4 and the inlet 301. During the flow of the thermal runaway gas in the filter chamber 3, the filter chamber 3 filters the particulate matter in the thermal runaway gas, thereby reducing the proportion of particulate matter in the thermal runaway gas discharged from the battery module, or even preventing the thermal runaway gas discharged from the battery module from containing particulate matter. For example, the component in the filter chamber 3 that can filter particulate matter in the thermal runaway gas can be at least one of the following components: filter plate, filter screen, adsorption structure, etc.

[0025] Typically, a frame beam is installed within the housing 1 of a battery module to support the battery module and define the mounting position of the battery body 2. This frame beam is usually located around the periphery of the battery body 2. Since the frame beam is typically a beam-plate structure, it cannot participate in the charging and discharging reactions between the cells, thus reducing the energy density of the battery module. Therefore, a filter chamber 3 is placed around the periphery of the battery body 2, forming the frame beam supporting the battery module. In other words, the original frame beam in the battery module is eliminated, and the filter chamber 3 forms the frame beam structure that supports the battery module and defines the mounting position of the battery body 2. This arrangement serves two purposes: firstly, since the filter chamber 3 also cannot participate in the charging and discharging reactions, it prevents further reduction in the energy density of the battery module; secondly, it ensures that the filter chamber 3 can filter particulate matter from the thermal runaway gas, thereby improving the safety of the battery in the event of thermal runaway.

[0026] The battery module with the above-described structure reduces the probability of combustion by filtering particulate matter from the thermal runaway gas emitted by the battery module through the filter chamber 3. It also reduces or even prevents the formation of smoke from the thermal runaway gas, thus minimizing public panic. Furthermore, the filter chamber 3 serves both to support the battery module and to filter particulate matter from the thermal runaway gas; that is, by incorporating the filter chamber 3, the battery module's energy density can be reduced while simultaneously filtering particulate matter from the thermal runaway gas.

[0027] In some embodiments, please refer to Figure 2 and Figure 4 The battery module also includes a baffle plate 5 and a guide plate 6. The baffle plate 5 is connected to the bottom wall of the filter chamber 3 and is used to block particulate matter in the thermal runaway gas. Specifically, since the particulate matter is relatively heavy, when the thermal runaway gas carries the particulate matter in the filter chamber 3, the particulate matter will move along the bottom wall of the filter chamber 3. Setting the baffle plate 5 on the bottom wall of the filter chamber 3 can effectively block the particulate matter carried in the thermal runaway gas, thereby filtering the particulate matter in the thermal runaway gas. The guide plate 6 is connected to the top wall of the filter chamber 3 and is used to guide the thermal runaway gas. That is, the guide plate 6 is used to adjust the flow direction of the thermal runaway gas. With this setting, the guide plate 6 can guide the thermal runaway gas to the position of the baffle plate 5, so that the baffle plate 5 can better block the particulate matter in the thermal runaway gas. It should be noted that in order to improve the blocking effect of the baffle plate 5 on the particulate matter and the guiding effect of the guide plate 6 on the thermal runaway gas, both the guide plate 6 and the baffle plate 5 are usually inclined relative to the flow direction of the thermal runaway gas.

[0028] In addition, since the filter cavity 3 is equipped with a baffle plate 5 and a flow guide plate 6, the baffle plate 5 and the flow guide plate 6 can not only block and guide the flow, but also act as reinforcing ribs to improve the structural strength of the filter cavity 3. This can further improve the structural strength of the filter cavity 3, thereby improving the structural strength of the filter cavity 3 as a supporting beam, and thus improving the overall structural strength of the battery module.

[0029] In some embodiments, please refer to Figure 4 Multiple baffle plates 5 and guide plates 6 are provided within the receiving cavity 1, and they are alternately and spaced apart in the flow direction of the thermal runaway gas. That is, in the flow direction of the thermal runaway gas, the baffle plates 5 are spaced apart and the guide plates 6 are also spaced apart, with the baffle plates 5 positioned within the gaps between adjacent guide plates 6, and the guide plates 6 also positioned within the gaps between adjacent baffle plates 5. With this arrangement, when the thermal runaway gas carrying particulate matter flows within the filter cavity 3, the first guide plate 6 ( Figure 4The plate shown in Figure a) will guide the thermal runaway gas and its carried particles to the first baffle plate 5. Figure 4 At the location of the plate shown in b), the first baffle plate 5 will initially block the particles carried by the thermal runaway gas; then, the thermal runaway gas carrying some particles will be guided to the next guide plate 6. Figure 4 At the location of the plate shown in C), the guide plate 6 again directs the thermal runaway gas and some particulate matter to the next baffle plate 5. Figure 4 At the location of the plate shown in d, the baffle plate 5 again blocks the particulate matter carried by the thermal runaway; the above process is repeated so that the thermal runaway gas and its carried particulate matter circulate between the guide plate 6 and the baffle plate 5, so that the baffle plate 5 blocks the particulate matter carried in the thermal runaway gas multiple times, thereby achieving multiple blocking and filtration of the particulate matter carried by the thermal runaway gas, and thus improving the filtration effect of the particulate matter carried by the thermal runaway gas.

[0030] For example, the flow direction of the thermal runaway gas is Figure 4 The direction indicated by the middle arrow A.

[0031] In some embodiments, please refer to Figure 4 In the direction of thermal runaway gas flow, the projections of the baffle plate 5 and the guide plate 6 partially overlap. That is to say, in... Figure 4 In the direction indicated by the double-headed arrow B, the sum of the heights of the baffle plate 5 and the guide plate 6 is greater than the height of the filter chamber 3. Thus, when the thermal runaway gas flows within the filter chamber 3, it alternately flows through the guide plate 6 and the baffle plate 5. This arrangement prevents the thermal runaway gas from flowing directly out of the exhaust end 302 of the filter chamber 3 without flowing to the baffle plate 5 after passing through the guide plate 6. In other words, it ensures that the thermal runaway gas flows through all the baffle plates 5 within the filter chamber 3, allowing the thermal runaway gas and its carried particles to be filtered by all the baffle plates 5 before being discharged from the exhaust end 302. This improves the filtration effect of the filter chamber 3 on the particles carried by the thermal runaway gas.

[0032] Furthermore, in the direction of thermal runaway gas flow, the projected lengths of the baffle plate 5 and the guide plate 6 are ensured to be the same. This allows the baffle plate 5 and the guide plate 6 to be configured as identical plate structures, differing only in their installation position and orientation within the filter chamber 3. This configuration improves the applicability of the baffle plate 5 and the guide plate 6, facilitates their manufacturing, and reduces their manufacturing difficulty.

[0033] In some embodiments, please refer to Figure 4In the direction of thermal runaway gas flow, the angle between the plane of the guide plate 6 and the top wall of the filter chamber 3 is R1, where R1 satisfies: 30°≤R1≤60°. That is, the angle between the guide plate 6 and arrow A is R1. If the angle R1 is too small, the angle between the guide plate 6 and the top wall of the filter chamber 3 is approximately parallel, resulting in poor efficiency in guiding the thermal runaway gas to the location of the guide plate 6. If the angle R1 is too large, the guiding effect of the guide plate 6 on the thermal runaway gas is poor, and there is a possibility that the guide plate 6 cannot guide the thermal runaway gas to its location. Therefore, ensuring that the angle between the plane of the guide plate 6 and the top wall of the filter chamber 3 meets the above range is crucial to ensure that the guide plate 6 can efficiently guide the thermal runaway gas to the target location while improving its guiding effect.

[0034] For example, the included angle R1 between the plane of the guide plate 6 and the top wall of the filter chamber 3 can be: 30°, 32°, 35°, 40°, 45°, 50°, 55°, 58°, 60°, etc.

[0035] In some embodiments, the angle between the plane of the baffle plate 5 and the bottom wall of the filter chamber 3 in the direction of thermal runaway gas flow is R2, where R2 satisfies: 120°≤R2≤150°. That is, the angle between the guide plate 6 and arrow A is R2. If the angle R2 is too large, the baffle plate 5 will be unable to block particles carried by the thermal runaway gas at larger angles, resulting in a poorer blocking effect of the baffle plate 5 on particles. If the angle R2 is too small, although the baffle plate 5 will have a better blocking effect on particles carried by the thermal runaway gas, it will create a large obstruction to the flow of the thermal runaway gas in the filter chamber 3, resulting in a reduced flow rate of thermal runaway gas, and thus a lower filtration efficiency of the filter chamber 3 for particles in the thermal runaway gas. By ensuring that the angle between the plane of the baffle plate 5 and the bottom wall of the filter chamber 3 meets the above range, the blocking effect of the baffle plate 5 on particles carried by the thermal runaway gas can be improved while ensuring the filtration efficiency of the filter chamber 3 for particles carried by the thermal runaway gas.

[0036] For example, the included angle R2 between the plane of the baffle plate 5 and the bottom wall of the filter chamber 3 can be: 120°, 122°, 125°, 130°, 135°, 140°, 145°, 148°, 150°, etc.

[0037] Please see Figure 4Furthermore, while ensuring that the baffle plate 5 and the guide plate 6 are arranged along the aforementioned directions, and that the projections of the baffle plate 5 and the guide plate 6 partially overlap in the flow direction of the thermal runaway gas, the baffle plate 5 and the guide plate 6 are further arranged parallel to each other. In this way, when the thermal runaway gas flows within the filter chamber 3, it can flow in a wave-like pattern. By circulating the thermal runaway gas in a wave-like manner, the guiding effect of the guide plate 6 on the thermal runaway gas and the blocking effect of the baffle plate 5 on the particulate matter carried by the thermal runaway gas are improved; on the other hand, the filtration efficiency of the filter chamber 3 on the particulate matter carried by the thermal runaway gas is also improved.

[0038] In addition, the baffle plate 5 and the guide plate 6 can be arranged in other ways, for example, the plane where the baffle plate 5 is located and the plane where the guide plate 6 is located are at a non-flat angle.

[0039] In some embodiments, please refer to Figure 2 The filter chamber 3 comprises multiple chambers disposed on different side walls of the battery body 2, with each chamber forming a supporting frame beam for the battery module. This arrangement enhances the support strength of the filter chambers 3 for the battery module, thereby improving the structural stability of the battery module. Furthermore, the multiple filter chambers 3 are connected end-to-end. When thermal runaway occurs in a cell of the battery body 2 within the battery module, the runaway gas flows through the explosion-proof valve 4 into the first connected filter chamber 3, which performs initial filtration. The gas then enters the next filter chamber 3 for further filtration, continuing until the gas passes through all the connected filter chambers 3. By using multiple sequentially connected filter chambers 3 to filter the runaway gas multiple times, the filtration effect on particulate matter carried in the runaway gas is improved, further reducing the particulate matter content in the final discharged runaway gas and enhancing the safety of the discharged gas.

[0040] In some embodiments, please refer to Figures 1 to 3The battery module also includes a cyclone separator 7. One end of the cyclone separator 7 is connected to the explosion-proof valve 4 through a first connecting pipe 8, and the other end of the cyclone separator 7 is connected to the air inlet 301 of the filter chamber 3 through a second connecting pipe 9. The cyclone separator 7 includes an arc-shaped part (not shown in the figure, which may be a part of the main body cavity 701). The axial direction of the first connecting pipe 8 is tangent to the arc-shaped part so that the thermal runaway gas is introduced into the cyclone separator 7 through the arc-shaped part and a swirling flow is formed in the cyclone separator 7. Specifically, when a cell in the battery module 2 experiences thermal runaway, the thermal runaway gas flows into the first connecting pipe 8 through the explosion-proof valve 4. Then, the thermal runaway gas is introduced into the hydrocyclone 7 through the arc-shaped portion of the first connecting pipe 8. Since the axis of the first connecting pipe 8 is tangent to the arc-shaped portion, a swirling flow is formed inside the hydrocyclone 7 after it enters the arc-shaped portion through the first connecting pipe. Because the thermal runaway gas carries particulate matter, and the weight of the particulate matter is greater than the weight of the thermal runaway gas, the centrifugal force of the swirling thermal runaway gas separates the particulate matter to the circumferential outer side of the swirling flow. This configuration achieves the separation of thermal runaway gas and particulate matter, facilitating the subsequent filtration of the particulate matter carried in the thermal runaway gas by the filter chamber 3, thereby improving the filtration efficiency of the particulate matter carried in the thermal runaway gas.

[0041] Furthermore, the structure and method of forming a swirling flow in the hydrocyclone 7 are not limited here. In addition to the above-mentioned method, a swirling fan can also be installed inside the hydrocyclone 7 to make the thermal runaway gas form a swirling flow.

[0042] In some embodiments, please refer to Figure 3The cyclone separator 7 includes a main body cavity 701 and a constriction cavity 702. The main body cavity 701 is connected to the first connecting pipe 8. In this case, the arc-shaped portion is set as a part of the main body cavity 701; alternatively, the main body cavity 701 can be entirely cylindrical, which facilitates the formation of a swirling flow of thermal runaway gas within the main body cavity 701. The flared end of the constriction cavity 702 is connected to the main body cavity 701, and the constricted end of the constriction cavity 702 is connected to the second connecting pipe 9. When the thermal runaway gas flows into the filter chamber 3 through the constriction cavity 702, the cross-sectional area of ​​the constriction cavity 702 decreases in the direction of gas flow. This pressurizes the thermal runaway gas as it flows through the constriction cavity 702, causing it to flow rapidly into the filter chamber 3, thereby improving the filtration efficiency. Furthermore, an exhaust pipe 10 is provided along the axial direction of the cyclone separator 7, extending into the constriction cavity 702. The exhaust pipe 10 and the constriction cavity 702 are coaxially arranged. Since the thermal runaway gas flows in a swirling manner within the cyclone separator 7, it also flows in a swirling manner within the constriction chamber 702. Thus, due to the centrifugal force of the swirling flow, the thermal runaway gas is located in the center of the constriction chamber 702 in the radial direction of the constriction chamber 702. The particulate matter carried by the thermal runaway gas is also positioned close to the wall of the constriction chamber 702 due to centrifugal force. Therefore, the exhaust pipe 10 is inserted into the constriction chamber 702 and coaxially arranged with it. This allows the swirling thermal runaway gas within the constriction chamber 702 to be discharged through the exhaust pipe 10. This allows thermal runaway gas without particulate matter to be directly discharged through the first connecting pipe 8, improving the discharge efficiency of the thermal runaway gas and relieving the filtration pressure of the filter chamber 3, while also improving the filtration effect of the filter chamber 3. Furthermore, the diameter of the exhaust pipe 10 is smaller than that of the second connecting pipe 9. This ensures that a small portion of the thermal runaway gas without particulate matter is discharged directly through the exhaust pipe 10, while most of the thermal runaway gas carrying particulate matter flows into the filter chamber 3 through the second connecting pipe 9 to filter the particulate matter carried in the thermal runaway gas, preventing the particulate matter carried by the thermal runaway gas from being discharged directly through the exhaust pipe 10.

[0043] This application discloses a vehicle that includes the aforementioned battery module. Since the vehicle includes the aforementioned battery module, the beneficial effects brought by the battery module to the vehicle are as described above and will not be repeated here.

[0044] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0045] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0046] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0047] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0048] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0049] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A battery module, characterized by, The system includes a receiving cavity and a battery body and a filter cavity disposed within the receiving cavity; the air inlet of the filter cavity is connected to the explosion-proof valve of the battery module, and the other end of the filter cavity is an exhaust end. The filter cavity is used to filter particulate matter in the thermal runaway gas discharged from the explosion-proof valve. The filter cavity is located on the periphery of the battery body and forms a frame beam that supports the battery module.

2. The battery module of claim 1, wherein, Also includes: A baffle plate, connected to the bottom wall of the filter chamber, is used to block particulate matter in the thermal runaway gas; A flow guide plate, connected to the top wall of the filter chamber, is used to guide the thermal runaway gas.

3. The battery module of claim 2, wherein, Multiple baffles and guide plates are provided within the containment cavity, and the baffles and guide plates are alternately and spaced apart in the flow direction of the thermal runaway gas.

4. The battery module of claim 2, wherein, In the direction of the thermal runaway gas flow, the projections of the baffle plate and the guide plate partially overlap.

5. The battery module according to claim 2, characterized in that, In the flow direction of the thermal runaway gas, the angle between the plane where the guide plate is located and the top wall of the filter cavity is R1, where R1 satisfies: 30°≤R1≤60°; And / or, In the direction of the flow of the thermal runaway gas, the angle between the plane of the baffle plate and the bottom wall of the filter chamber is R2, where R2 satisfies: 120°≤R2≤150°.

6. The battery module of claim 5, wherein, The baffle plate and the guide plate are arranged in parallel.

7. The battery module according to any one of claims 1 to 6, characterized in that, The filter chambers include multiple ones disposed on different side walls of the battery body, and the multiple filter chambers are connected end to end.

8. The battery module of claim 1, wherein, It also includes a cyclone separator, one end of which is connected to the explosion-proof valve via a first connecting pipe, and the other end of which is connected to the air inlet of the filter chamber via a second connecting pipe; the cyclone separator includes an arc-shaped portion, and the axial direction of the first connecting pipe is tangent to the arc-shaped portion, so as to introduce the thermal runaway gas into the cyclone separator through the arc-shaped portion and form a vortex in the cyclone separator.

9. The battery module of claim 8, wherein, The hydrocyclone includes: The body cavity is connected to the first connecting pipe; The cavity is narrowed, with its flared end connected to the main body cavity and its narrowed end connected to the second connecting tube. An exhaust pipe extending into the constricted cavity is provided along the axial direction of the cyclone separator. The exhaust pipe and the constricted cavity are coaxially arranged, and the diameter of the exhaust pipe is smaller than the diameter of the second connecting pipe.

10. A vehicle characterized by comprising: The battery module includes any one of claims 1-9.

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