Battery assembly and vehicle

Abstract

The utility model provides a battery assembly and a vehicle. According to one embodiment of the invention, the battery assembly comprises a first battery module, a second battery module, a battery tray and a plurality of elastic stoppers, the first battery module comprises a plurality of first single batteries, the second battery module comprises a plurality of second single batteries, and the first single batteries and the second single batteries are provided with anti-explosion valves; the battery tray comprises a tray body and a smoke exhaust channel, the smoke exhaust channel comprises a smoke exhaust channel, a plurality of first through holes and a plurality of second through holes which are communicated, the smoke exhaust channel is communicated with the outside, the plurality of first through holes are in one-to-one correspondence with the explosion-proof valves of the plurality of first single batteries, and the plurality of second through holes are in one-to-one correspondence with the explosion-proof valves of the plurality of second single batteries; each elastic stopping piece comprises a first stopping part and a second stopping part which are connected, the first stopping parts correspond to the first through holes in a one-to-one mode, and the second stopping parts correspond to the second through holes in a one-to-one mode. The scheme can reduce the risk of thermal runaway of the battery assembly.

Description

Technical Field

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

[0002] The battery pack is an energy storage device and an important component of hybrid and electric vehicles. The battery pack comprises multiple battery modules, each containing multiple individual cells, each equipped with an explosion-proof valve.

[0003] During use, if the internal pressure of a single battery cell increases to a threshold, the explosion-proof valve will open, allowing high-temperature splashes such as smoke and flames inside the cell to escape. However, the smoke and flames expelled through the explosion-proof valve of this single battery cell may affect other normal battery cells, posing a risk of thermal runaway to the entire battery assembly. Utility Model Content

[0004] This application provides a battery assembly that can reduce the risk of thermal runaway in the battery assembly.

[0005] In a first aspect, this application provides a battery assembly, comprising:

[0006] Multiple battery modules, including at least a first battery module and a second battery module, wherein the first battery module includes multiple first individual cells and the second battery module includes multiple second individual cells, and both the first individual cells and the second individual cells are provided with explosion-proof valves;

[0007] A battery tray includes a tray body and a smoke exhaust channel. A first battery module and a second battery module are mounted on the tray body. The smoke exhaust channel is located between the first battery module and the second battery module. The smoke exhaust channel includes a connected smoke duct, multiple first through holes, and multiple second through holes. The smoke exhaust duct communicates with the outside environment. Each of the multiple first through holes corresponds to a corresponding explosion-proof valve of a multiple first individual battery cell, and each of the multiple second through holes corresponds to a corresponding explosion-proof valve of a multiple second individual battery cell.

[0008] Multiple elastic stop members are movably clamped in the flue. Each elastic stop member includes a connected first stop part and a second stop part. The multiple first stop parts correspond one-to-one with the multiple first through holes. The first stop part closes the corresponding first through hole. The multiple second stop parts correspond one-to-one with the multiple second through holes. The second stop part closes the corresponding second through hole.

[0009] Optionally, the battery assembly further includes a support member installed in the exhaust duct to support multiple elastic stops.

[0010] Optionally, the support member includes a support shaft, and a plurality of the elastic stops are mounted on the support shaft.

[0011] Optionally, the support member further includes a plurality of baffles, which are inserted through the support shaft, and an elastic stop is provided between two adjacent baffles.

[0012] Optionally, the elastic stop further includes a connecting portion, which includes a first leg and a second leg. The two ends of the first leg are respectively connected to the first stop and the second leg, and the two ends of the second leg are respectively connected to the second stop and the first leg.

[0013] The first leg and the second leg have a first included angle.

[0014] Optionally, the first included angle is an acute angle.

[0015] Optionally, a second included angle, wherein the first support leg and the first stop portion are obtuse, exist between them; and / or,

[0016] There is a third included angle between the second support leg and the second stop, and the third included angle is an obtuse angle.

[0017] Optionally, the width of the first leg is smaller than the width of the first stop; and / or,

[0018] The width of the second leg is smaller than the width of the second stop.

[0019] Optionally, the first single cell and / or the second single cell include opposing first and second sides, the first side having at least one first positive terminal and at least one first negative terminal, the second side having at least one second positive terminal and at least one second negative terminal, the first positive terminal and the second negative terminal facing each other, and the first negative terminal and the second positive terminal facing each other; the explosion-proof valve is disposed on the first side or the second side.

[0020] Optionally, the battery assembly further includes a first heat exchange plate and a second heat exchange plate, the first heat exchange plate and the second heat exchange plate being respectively disposed on opposite sides of the battery module;

[0021] Optionally, the battery assembly further includes a first containment member, which is located between the first single cell and the exhaust channel, and is disposed around the outer periphery of the first through hole;

[0022] Optionally, the battery assembly further includes a second containment member, which is located between the second individual battery cell and the exhaust channel, and is disposed around the outer periphery of the second through hole.

[0023] Secondly, this application also provides a vehicle comprising: a battery assembly as described in any of the preceding claims.

[0024] The battery pack and vehicle provided in this application have at least the following advantages:

[0025] The first stop seals its corresponding first through-hole, and the second stop seals its corresponding second through-hole, preventing foreign objects from entering the individual battery cells within the exhaust duct. When the internal pressure of the individual battery cell reaches a threshold, the explosion-proof valve opens, allowing high-temperature splashes to push open the corresponding first or second stop and enter the exhaust duct for discharge to the outside. At this time, because the second stop is connected to the first stop and is elastic, when one of the first or second stop is pushed open, the other will be pressed tighter under the elastic force, thus better sealing the corresponding through-hole. Furthermore, as the high-temperature splashes enter the exhaust duct, the pressure inside increases. Under this high pressure, the remaining first and second stopes will also be pressed tighter, further sealing the corresponding first or second through-hole and preventing the high-temperature splashes from affecting the normal individual battery cells. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a battery assembly according to an embodiment;

[0027] Figure 2 This is a partial structural diagram of the battery assembly at the exhaust channel;

[0028] Figure 3 This is a partial schematic diagram of the first battery module;

[0029] Figure 4 This is a partial schematic diagram of the second battery module;

[0030] Figure 5 This is a cross-sectional view of the smoke exhaust channel when the elastic stop is in the closed state;

[0031] Figure 6 This is a cross-sectional view of the smoke exhaust channel when the elastic stop is in the open position;

[0032] Figure 7 This is an exploded view of the smoke exhaust duct and the flexible stop.

[0033] Figure 8 This is a schematic diagram showing the positions of the first and second heat exchange plates.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Battery module; 10a. First battery module; 10b. Second battery module; 11. First single cell; 12. Second single cell; 13. Explosion-proof valve; 14. First side; 15. Second side; 16. First positive terminal; 17. First negative terminal; 18. Second positive terminal; 19. Second negative terminal; 20. Battery tray; 21. Tray body; 211. Smoke vent; 22. Smoke exhaust channel; 221. Exhaust duct; 222, First through hole; 223, Second through hole; 224, Side plate; 225, Top plate; 226, Bottom plate; 30, Elastic stop; 31, First stop part; 32, Second stop part; 331, First support leg; 332, Second support leg; 34, Reinforcing part; 41, Support shaft; 42, Baffle plate; 51, First heat exchange plate; 52, Second heat exchange plate; 61, First containment part; 62, Second containment part. Detailed Implementation

[0036] This application provides a battery assembly and a vehicle. The battery assembly and the vehicle are described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and implementation methods can be combined with each other.

[0037] Please refer to Figures 1 to 4 This application provides a battery assembly including multiple battery modules 10, a battery tray 20, and multiple elastic stops 30.

[0038] The multiple battery modules 10 include at least a first battery module 10a and a second battery module 10b. The first battery module 10a includes multiple first single cells 11, and the second battery module 10b includes multiple second single cells 12. Each first single cell 11 and each second single cell 12 is provided with an explosion-proof valve 13. When the internal gas pressure of the single cell increases and reaches the threshold pressure for opening the explosion-proof valve 13, the explosion-proof valve 13 on the single cell will open, and high-temperature splashes such as flames, smoke and gas inside can be ejected from the explosion-proof valve 13.

[0039] The battery tray 20 includes a tray body 21 and a smoke exhaust channel 22. A first battery module 10a and a second battery module 10b are mounted on the tray body 21. The mounting method can be screwed, snap-fitted, or welded, but is not limited to these methods. The smoke exhaust channel 22 is located between the first battery module 10a and the second battery module 10b, separating them. In other words, the first battery module 10a and the second battery module 10b are located on opposite sides of the smoke exhaust channel 22.

[0040] The smoke exhaust channel 22 includes a connected smoke exhaust duct 221, a plurality of first through holes 222 and a plurality of second through holes 223, and the smoke exhaust duct 221 is connected to the outside. For example, the tray body 21 may have a smoke exhaust port 211, and the smoke exhaust duct 221 is connected to the outside through the smoke exhaust port 211 on the tray body 21.

[0041] Multiple first through holes 222 correspond one-to-one with the explosion-proof valves 13 of multiple first individual cells 11, and multiple second through holes 223 correspond one-to-one with the explosion-proof valves 13 of multiple second individual cells 12. When the explosion-proof valve 13 of a certain individual cell opens to discharge high-temperature splashes, the high-temperature splashes can be discharged into the exhaust duct 221 through the corresponding through hole.

[0042] Multiple elastic stop members 30 are movably clamped within the flue 221, and the movement includes, but is not limited to, rotation. Each elastic stop member 30 includes a connected first stop portion 31 and a second stop portion 32. The multiple first stop portions 31 correspond one-to-one with multiple first through holes 222, and the first stop portions 31 close the corresponding first through holes 222. The multiple second stop portions 32 correspond one-to-one with multiple second through holes 223, and the second stop portions 32 close the corresponding second through holes 223.

[0043] like Figure 5 As shown, under normal conditions, because the elastic stop 30 is clamped inside the exhaust duct 221, under the action of elastic force, the first stop 31 can block its corresponding first through hole 222, and the second stop 32 can block its corresponding second through hole 223. This can prevent foreign objects in the exhaust duct 22 from entering the individual battery cells. Figure 6 As shown, when the internal pressure of a single battery cell reaches a threshold, the explosion-proof valve 13 opens, allowing the high-temperature splashes to push open the corresponding first stop 31 or second stop 32 and enter the exhaust duct 221, finally exiting from the exhaust port 211. At this time, since the second stop 32 is connected to the first stop 31, when one of the first stop 31 and the second stop 32 is pushed open, the other will be pressed tighter under the action of elastic force, thus better sealing the corresponding through hole. Furthermore, as the high-temperature splashes enter the exhaust duct 221, the pressure inside the exhaust duct 221 increases. Under the action of high pressure, the remaining first stop 31 and second stop 32 will also be pressed tighter, thus better sealing the corresponding first through hole 222 or second through hole 223. Therefore, this solution allows the high-temperature splashes from the faulty individual cell to smoothly enter the exhaust duct 221, while also preventing the high-temperature splashes from moving around in the exhaust duct 221 and affecting other normal individual cells, thus reducing the risk of thermal runaway of the entire battery assembly.

[0044] In such Figure 5 and Figure 6In the illustrated embodiment, when the elastic stop 30 is in the closed state, it is clamped within the exhaust duct 221, sealing the first through hole 222 and the second through hole 223. When one of the first individual cells 11 fails, the high-temperature splashes push open the corresponding first stop 31 and enter the exhaust duct through the first through hole 222. At this time, the remaining stops still seal their corresponding through holes to prevent the high-temperature splashes from affecting other normal individual cells.

[0045] In one embodiment, the battery assembly further includes a first containment member 61, which may be frame-shaped, but is not limited thereto. The first containment member 61 is located between the first single cell 11 and the exhaust channel 22, and is disposed around the outer periphery of the first through hole 222.

[0046] With this configuration, when the explosion-proof valve 13 of the first single cell 11 is opened and high-temperature splashes are discharged, the first containment member 61 can effectively prevent these discharges from leaking through the gap between the first through hole 222 and the surrounding area, ensuring that the discharges can only enter the smoke exhaust channel 22 through the first through hole 222, reducing the risk of disorderly diffusion of discharges inside the battery assembly, and better protecting other normal single cells.

[0047] Furthermore, the battery assembly may also include a second containment member 62, which is located between the second single cell 12 and the exhaust channel 22, and is disposed around the outer periphery of the second through hole 223. The working mechanism of the second containment member 62 can be referred to that of the first containment member 61, and will not be described in detail here.

[0048] Please refer to Figure 5 In one embodiment, the elastic stop 30 further includes a connecting portion, which includes a first leg 331 and a second leg 332. The two ends of the first leg 331 are respectively connected to the first stop portion 31 and the second leg 332, and the two ends of the second leg 332 are respectively connected to the second stop portion 32 and the first leg 331; wherein, the first leg 331 and the second leg 332 have a first included angle.

[0049] The connecting part securely connects the first stop 31 and the second stop 32 by means of a first support leg 331 and a second support leg 332. This triangular structure provides good mechanical stability and can better withstand the pressure from the exhaust duct 221. Furthermore, the first support leg 331 and the second support leg 332 have a first included angle, giving the connecting part a certain degree of elastic deformation capability. When high-temperature spray pushes open the first stop 31 or the second stop 32, the connecting part can deform within the elastic range, providing the necessary space for the stop to open.

[0050] In one embodiment, the first included angle is an acute angle. The connection part with an acute angle design is relatively compact and can be more rationally arranged within the limited space of the exhaust duct 221, which helps to reduce the space occupied by the entire elastic stop 30. For example, the first included angle can be 20°, 30°, 40°, 50°, 60°, 70°, or 80°, but is not limited to these.

[0051] In one embodiment, a second included angle is formed between the first support leg 331 and the first stop portion 31, and the second included angle is an obtuse angle; similarly, a third included angle is formed between the second support leg 332 and the second stop portion 32, and the third included angle is also an obtuse angle.

[0052] Thus, the obtuse second included angle creates a specific mechanical structure between the first support 331 and the first stop 31. When the internal gas pressure of a single battery cell reaches a threshold and the explosion-proof valve 13 opens, the pressure generated by the high-temperature splashes acts on the first stop 31. The obtuse angle structure provides a larger lever arm, making it easier for the first stop 31 to rotate around the connection point with the first support 331 under pressure, thereby being pushed open more smoothly and allowing the exhaust material to enter the exhaust duct 221 smoothly. Similarly, the third included angle also provides similar convenience for the opening of the second stop 32 under pressure.

[0053] For example, the second included angle can be 100°, 110°, 120°, 130°, 140°, 150°, or 160°; the third included angle can be 100°, 110°, 120°, 130°, 140°, 150°, or 160°, but is not limited to these.

[0054] Please continue to refer to this. Figure 5 The smoke exhaust duct 22 has a rectangular cross-section and includes two side plates 224, a top plate 225, and a bottom plate 226. The two side plates 224 are located between and connect the top plate 225 and the bottom plate 226, forming the smoke exhaust duct 22. One of the two side plates 224 has the aforementioned first through hole 222, and the other has the aforementioned second through hole 223.

[0055] Furthermore, when the battery tray also includes a longitudinal beam for separating the first battery module and the second battery module, the smoke exhaust channel 22 can utilize the longitudinal beam structure and be integrally formed with the longitudinal beam to save materials and costs.

[0056] In some other embodiments, the cross-section of the smoke exhaust duct 22 can be a symmetrical or asymmetrical shape, such as a circle or an ellipse.

[0057] Please refer to Figure 7In one embodiment, the width of the first leg 331 is smaller than the width of the first stop portion 31; similarly, the width of the first leg 331 may also be smaller than the width of the second stop portion 32.

[0058] The narrower first leg 331 and second leg 332 make the connecting part more elastic in the overall structure. When the high-temperature spray pushes open the first stop 31 or the second stop 32, the relatively narrow first leg 331 and second leg 332 are more likely to undergo elastic deformation, which facilitates the opening and closing of the first stop 31 and the second stop 32.

[0059] The size of the first stop portion 31 may be slightly larger than the size of the first through hole 222 to completely seal the first through hole 222 and prevent it from moving towards the side facing the first through hole 222 under external pressure. The sizes of the first stop portion 31 and the second stop portion 32 may be the same, which will not be described in detail here. The sizes of the first support leg 331 and the second support leg 332 may also be the same, but are not limited thereto.

[0060] Furthermore, the connecting portion also includes a reinforcing portion 34, which connects the first leg 331 and the second leg 332. Specifically, the first leg 331 is connected to the second leg 332 via the reinforcing portion 34. The width of the reinforcing portion 34 is greater than both the width of the first leg 331 and the width of the second leg 332. The reinforcing portion 34 increases the connection strength between the first leg 331 and the second leg 332.

[0061] In one embodiment, the battery assembly further includes a support member mounted in the exhaust duct 22 and supporting multiple resilient stops 30. The support member provides a stable support base for the multiple resilient stops 30. During battery operation, the resilient stops 30 are subjected to various external forces due to factors such as vehicle vibration and internal battery pressure fluctuations. The support member effectively resists these external forces, preventing the resilient stops 30 from shifting, shaking, or falling within the exhaust duct 22, ensuring they remain in the correct position at all times.

[0062] It should be noted that the shape and structure of the support member are not limited, as long as it can support the elastic stop member 30 and does not hinder the movement of the first stop part 31 and the second stop part 32.

[0063] In one embodiment, the support includes a support shaft 41, on which a plurality of elastic stops 30 are mounted. Using the support shaft 41 as the structure to support the elastic stops 30 greatly simplifies the design of the support.

[0064] Compared to complex frames or multi-component support structures, the design concept of the support shaft 41 is simple and clear, with lower processing and manufacturing difficulty, effectively reducing production costs. Furthermore, the elastic stop 30, mounted on the support shaft 41, maximizes the freedom of movement of the first stop 31 and the second stop 32. When the internal gas pressure of a single battery cell reaches a threshold and the explosion-proof valve 13 opens, the high-temperature splashes can smoothly push open the corresponding first stop 31 or second stop 32, without the support shaft 41 interfering with the opening and resetting of the stop. This ensures that the discharged material can smoothly enter the exhaust duct 221, and after discharge, the stop can quickly return to a sealed state under elastic restoring force.

[0065] Specifically, the reinforcing part 34 of the elastic stop 30 is mounted on the support shaft 41.

[0066] In one embodiment, the support further includes a plurality of baffles 42, which are inserted through the support shaft 41, and an elastic stop 30 is disposed between two adjacent baffles 42. The baffles 42 separate the plurality of elastic stops 30 from each other, avoiding possible collisions, compression or interference between adjacent elastic stops 30. This allows each elastic stop 30 to function in the correct position and minimizes its axial movement along the support shaft 41.

[0067] Please refer to Figure 8 In one embodiment, both the first cell 11 and the second cell 12 include opposing first sides 14 and second sides 15. The first side 14 is provided with at least one first positive electrode post 16 and at least one first negative electrode post 17, and the second side 15 is provided with at least one second positive electrode post 18 and at least one second negative electrode post 19. The first positive electrode post 16 and the second negative electrode post 19 are directly opposite each other, and the first negative electrode post 17 and the second positive electrode post 18 are directly opposite each other. This shortens the electron transport path of each cell, reduces the internal resistance of the cell, thereby reducing heat generation and further reducing the risk of thermal runaway.

[0068] Please refer to Figure 8 Here, "directly opposite" means that the first positive terminal 16 and the second negative terminal 19 are approximately collinear in the horizontal direction, and the first negative terminal 17 and the second positive terminal 18 are collinear in the horizontal direction.

[0069] Furthermore, the explosion-proof valve 13 is disposed on the first side 14 or the second side 15.

[0070] It is easy to understand that, since the positive / negative terminals on the first side 14 correspond one-to-one with the positive / negative terminals on the second side 15, multiple first individual batteries 11 can be arranged side by side, and the battery module 10 does not need to alternately flip the first individual batteries 11 for series and parallel connection. Furthermore, this allows the explosion-proof valves 13 of multiple first individual batteries 11 to face the same side, facilitating one-to-one correspondence with multiple through holes. Similarly, multiple second individual batteries 12 can also be arranged side by side, which will not be elaborated further.

[0071] like Figure 8 In the illustrated embodiment, the explosion-proof valve 13 is disposed on the first side 14 and located between the first positive terminal 16 and the first negative terminal 17. The first side 14 and the second side 15 are both short sides. Each first single cell 11 is arranged with its long sides parallel to each other with the short sides of the first side 14 and the second side 15 as the axial direction. Each second single cell 12 is arranged with its long sides parallel to each other with the short sides of the first side 14 and the second side 15 as the axial direction. The explosion-proof valves 13 of the first single cell 11 and the second single cell 12 face each other.

[0072] Of course, in other embodiments, the explosion-proof valve 13 may also be disposed on the second side 15, located between the second positive terminal 18 and the second negative terminal 19. Alternatively, the explosion-proof valve 13 may be disposed at the bottom of the individual battery cell.

[0073] In one embodiment, the battery assembly further includes a first heat exchange plate 51 and a second heat exchange plate 52, with the first heat exchange plate 51 respectively disposed on opposite sides of the battery module 10. The first heat exchange plate 51 and the second heat exchange plate 52 can simultaneously cool the battery module 10 from opposite sides, which helps to reduce the heat transfer path, improve heat transfer efficiency, and make the temperature distribution of each individual battery cell in the battery module 10 more uniform.

[0074] like Figure 8 In the illustrated embodiment, the first heat exchange plate 51 is bonded to the top of the battery module 10 with thermally conductive adhesive, and the second heat exchange plate 52 is bonded to the bottom of the battery module 10 with thermally conductive adhesive. The first heat exchange plate 51 and the second heat exchange plate 52 can be liquid cooling plates, but are not limited thereto.

[0075] It should be noted that the battery module 10 mentioned above can be either the first battery module 10a or the second battery module 10b.

[0076] In some embodiments, the battery assembly may also include more battery modules, and the above-mentioned exhaust channel 22 and elastic stop member 30 may be provided between two adjacent battery modules.

[0077] This application also provides a vehicle that includes the battery assembly described in any of the above embodiments or implementations.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery assembly, comprising: The battery assembly comprises: a plurality of battery modules, at least comprising a first battery module and a second battery module, the first battery module comprising a plurality of first single batteries, and the second battery module comprising a plurality of second single batteries, the first single batteries and the second single batteries each being provided with an explosion-proof valve; a battery tray comprising a tray body and a smoke exhaust passage, the first battery module and the second battery module being mounted on the tray body, and the smoke exhaust passage being located between the first battery module and the second battery module; the smoke exhaust passage comprising a smoke exhaust channel, a plurality of first through holes and a plurality of second through holes, the smoke exhaust channel being in communication with the outside, the plurality of first through holes corresponding one-to-one to the explosion-proof valves of the plurality of first single batteries, and the plurality of second through holes corresponding one-to-one to the explosion-proof valves of the plurality of second single batteries; and a plurality of elastic stoppers movably clamped in the smoke exhaust channel, each of the elastic stoppers comprising a first stopper portion and a second stopper portion connected together, the plurality of first stopper portions corresponding one-to-one to the plurality of first through holes, the first stopper portion closing the corresponding first through hole, the plurality of second stopper portions corresponding one-to-one to the plurality of second through holes, and the second stopper portion closing the corresponding second through hole.

2. The battery assembly of claim 1, wherein, The battery assembly further comprises a support member mounted on the smoke exhaust passage and supporting the plurality of elastic stoppers.

3. The battery assembly of claim 2, wherein, The support member comprises a support shaft, and the plurality of elastic stoppers are hung on the support shaft.

4. The battery assembly of claim 3, wherein, The support member further comprises a plurality of stop sheets, the stop sheets being threaded on the support shaft, and one of the elastic stoppers being arranged between two adjacent stop sheets.

5. The battery assembly of claim 1, wherein, The elastic stopper further comprises a connecting portion, the connecting portion comprising a first leg and a second leg, two ends of the first leg being connected to the first stopper portion and the second leg respectively, and two ends of the second leg being connected to the second stopper portion and the first leg respectively. The first leg and the second leg have a first included angle therebetween.

6. The battery assembly of claim 5, wherein, The first included angle is an acute angle.

7. The battery assembly of claim 5, wherein, The first leg and the first stopper portion have a second included angle therebetween, and the second included angle is an obtuse angle; and / or The second leg and the second stopper portion have a third included angle therebetween, and the third included angle is an obtuse angle.

8. The battery assembly of claim 5, wherein, The width of the first leg is smaller than the width of the first stopper portion; and / or The width of the second leg is smaller than the width of the second stopper portion.

9. The battery assembly of claim 1, wherein, The first single battery and / or the second single battery comprises opposite first and second sides, the first side being provided with at least one first positive pole and at least one first negative pole, the second side being provided with at least one second positive pole and at least one second negative pole, the first positive pole and the second negative pole being opposite to each other, and the first negative pole and the second positive pole being opposite to each other; and / or The battery assembly further comprises a first heat exchange plate and a second heat exchange plate, the first heat exchange plate and the second heat exchange plate being arranged on opposite sides of the battery module respectively; and / or The first heat exchange plate and the second heat exchange plate are arranged on the first side and the second side of the battery module respectively. The battery assembly further comprises a first blocking member located between the first single battery and the smoke exhaust passage and surrounding the outer periphery of the first through hole; and / or, The battery assembly further comprises a second blocking member located between the second single battery and the smoke exhaust passage and surrounding the outer periphery of the second through hole.

10. A vehicle characterized by comprising: Comprising: The battery assembly according to any one of claims 1 to 9.

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