Battery pack and vehicle

Abstract

This application discloses a battery pack and vehicle, belonging to the field of battery technology. The battery pack includes a single cell, a liquid cooling plate, and a cover. The single cell includes a top wall, an explosion-proof valve, and a side wall. The explosion-proof valve is connected to the top wall, and the side wall is connected to the top wall. The liquid cooling plate has a connecting surface, and the side wall is connected to the connecting surface. The liquid cooling plate also has a flow channel and spray holes communicating with the flow channel. The spray holes are disposed on the connecting surface, and the orthographic projection of the side wall on the connecting surface is spaced apart from the spray holes. The cover is connected to the liquid cooling plate and covers the spray holes. By providing spray holes sealed by the cover on the connecting surface of the liquid cooling plate facing the single cell, this application enables the cooling medium to be drawn from the spray holes and sprayed onto the thermally runaway single cell after thermal runaway, thereby cooling the thermally runaway single cell and slowing down the rate of thermal runaway propagation.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to battery packs and vehicles. Background Technology

[0002] The battery pack contains multiple individual batteries, which can be combined in a reasonable way to meet the needs of electrical equipment in terms of voltage, capacity, safety performance and other aspects.

[0003] However, when a single cell experiences thermal runaway, it heats up nearby cells, and the thermal runaway can spread rapidly. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack to solve the technical problem of rapid propagation of thermal runaway after thermal runaway of a single cell; another purpose of this application is to provide a vehicle.

[0005] Technical solution: This application provides a battery pack, including:

[0006] A single battery cell, the single battery cell including a top wall, an explosion-proof valve and a side wall, the explosion-proof valve being connected to the top wall, and the side wall being connected to the top wall;

[0007] A liquid cooling plate has a connecting surface, a sidewall connected to the connecting surface, and the liquid cooling plate also has a flow channel and a spray hole communicating with the flow channel. The spray hole is disposed on the connecting surface, and the orthographic projection of the sidewall on the connecting surface is spaced apart from the spray hole.

[0008] A cover is provided, which is connected to the liquid cooling plate and covers the spray holes.

[0009] In some embodiments, the liquid cooling plate includes:

[0010] The main body is connected to the side wall;

[0011] The protrusion is connected to the main body and protrudes from the top wall. The spray hole is disposed on the protrusion.

[0012] In some embodiments, the protrusion is provided with a plurality of spray holes, which are arranged sequentially at intervals, and the cover is connected to the protrusion and covers at least two of the spray holes.

[0013] In some embodiments, the top wall is spaced apart from the cover.

[0014] In some embodiments, the battery pack further includes a heat-conducting element disposed between the sidewall and the connecting surface, and connecting the sidewall and the connecting surface respectively, wherein the heat-conducting element and the cover are spaced apart.

[0015] In some embodiments, the battery pack further includes:

[0016] A housing having a receiving cavity, wherein the individual battery is disposed in the receiving cavity, and the side of the individual battery facing away from the side wall is connected to the housing;

[0017] A crossbeam is disposed in the receiving cavity and connected to the side of the housing near the single battery cell. The housing, the crossbeam, and the top wall are spaced apart to form a receiving space, and the spray holes face the receiving space.

[0018] In some embodiments, the crossbeam is disposed between the liquid cooling plate and the housing.

[0019] In some embodiments, the single battery cell further includes an electrode post that passes through and is connected to the top wall. The electrode post is spaced apart from the explosion-proof valve and is located on the side of the explosion-proof valve away from the liquid cooling plate.

[0020] In some embodiments, the battery pack further includes a sensor connected to a liquid cooling plate configured to adjust the flow rate of liquid within a channel based on a signal from the sensor.

[0021] Accordingly, this application also provides a vehicle including a battery pack as described in any of the above embodiments.

[0022] Beneficial Effects: Compared with the prior art, the battery pack provided in this application includes a single battery cell, a liquid cooling plate, and a cover. The single battery cell includes a top wall, an explosion-proof valve, and a side wall. The explosion-proof valve is connected to the top wall, and the side wall is connected to the top wall. The liquid cooling plate has a connecting surface, and the side wall is connected to the connecting surface. The liquid cooling plate also has a flow channel and spray holes communicating with the flow channel. The spray holes are disposed on the connecting surface, and the orthographic projection of the side wall on the connecting surface is spaced apart from the spray holes. The cover is connected to the liquid cooling plate and covers the spray holes. By providing spray holes sealed by the cover on the connecting surface of the liquid cooling plate facing the single battery cell, this application can lead out cooling medium from the spray holes after the single battery cell experiences thermal runaway and spray it onto the thermally runaway single battery cell to cool it down and slow down the spread of thermal runaway. Attached Figure Description

[0023] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0025] Figure 2A cross-sectional view of the battery pack provided in an embodiment of this application;

[0026] Figure 3 for Figure 2 Detailed view of point A in the middle circle;

[0027] Figure 4 This is a cross-sectional view of the battery pack provided in an embodiment of this application, with the casing and part of the crossbeams hidden.

[0028] Figure 5 for Figure 4 Detailed view of area B in the middle circle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Single cell; 110-Top wall; 120-Explosion-proof valve; 130-Side wall; 140-Terminal post; 200-Liquid cooling plate; 210-Connecting surface; 220-Flow channel; 230-Spray hole; 240-Body part; 250-Protrusion; 300-Cap; 400-Heat-conducting component; 500-Shell; 510-Receiving cavity; 600-Crossbeam; 610-Receiving space; 700-Protective component; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0031] 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0033] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0034] The battery pack contains multiple individual batteries, which can be combined in a reasonable way to meet the needs of electrical equipment in terms of voltage, capacity, safety performance and other aspects.

[0035] However, when a single cell experiences thermal runaway, it heats up nearby cells, and the thermal runaway can spread rapidly.

[0036] To address the technical problem of rapid propagation of thermal runaway after a single cell thermal runaway, the first embodiment of this application provides a battery pack. (See attached...) Figure 1 , Figure 2 and Figure 3 The battery pack includes a single battery cell 100, a liquid cooling plate 200, and a cover 300. The single battery cell 100 includes a top wall 110, an explosion-proof valve 120, and a side wall 130. The explosion-proof valve 120 is connected to the top wall 110, and the side wall 130 is connected to the top wall 110. The liquid cooling plate 200 has a connecting surface 210, and the side wall 130 is connected to the connecting surface 210. The liquid cooling plate 200 also has a flow channel 220 and a spray hole 230 communicating with the flow channel 220. The spray hole 230 is disposed on the connecting surface 210, and the orthographic projection of the side wall 130 on the connecting surface 210 is spaced apart from the spray hole 230. The cover 300 is connected to the liquid cooling plate 200 and covers the spray hole 230.

[0037] In some embodiments, the single cell 100 is connected to the side of the liquid cooling plate 200 along the third direction Z, where the third direction Z is the direction indicated by the arrow Z in the figure.

[0038] Specifically, the flow channel 220 is used for the flow of cooling medium to remove the heat generated by the individual battery cells 100 connected to the liquid cooling plate 200.

[0039] In some embodiments, the cooling medium is a coolant with added flame-retardant components.

[0040] In some embodiments, a single cell 100 includes two top walls 110, which are spaced apart and connected to side walls 130 respectively.

[0041] Specifically, the cover 300 can be melted by the flame or high-temperature gas ejected from the explosion-proof valve 120 of the self-heating runaway single cell 100.

[0042] In some embodiments, the cover 300 can cover the spray hole 230 to prevent the cooling medium from flowing out of the spray hole 230; when the single cell 100 thermally runs away, the high temperature or flame can melt or burn the cover 300 to expose the spray hole 230, thereby allowing the cooling medium to flow out of the flow channel 220 through the spray hole 230.

[0043] In the first aspect, in the above embodiment, since the side wall 130 of the single cell 100 is connected to the connecting surface 210, and the explosion-proof valve 120 is disposed on the top wall 110 connected to the side wall 130, the connecting surface 210 will not cover the explosion-proof valve 120, so that the heat in the single cell 100 can be ejected from the explosion-proof valve 120.

[0044] Secondly, in the above embodiment, since the orthographic projection of the sidewall 130 on the connecting surface 210 is spaced from the spray hole 230, it means that the sidewall 130 connected to the connecting surface 210 will not block the spray hole 230, and the cooling medium in the flow channel 220 can be sprayed out from the spray hole 230.

[0045] Thirdly, in the above embodiments, by providing a cover 300, the spray hole 230 can be blocked under normal operating conditions so that the flow channel 220 is closed, which facilitates the circulation of the cooling medium; it can also expose the spray hole 230 in the event of thermal runaway so as to release the cooling medium to cool the single cell 100 and reduce the spread rate of thermal runaway.

[0046] Meanwhile, in the above embodiments, the spray hole 230 and the cover 300 are disposed on the connection surface 210 of the liquid cooling plate 200 facing the single cell 100, which allows the cover 300 to react to thermal runaway more quickly. The exposed spray hole 230 allows the cooling medium to be sprayed directly onto the single cell 100 to cool it down, thereby reducing the spread rate of thermal runaway.

[0047] In some embodiments, please refer to Figure 2 and Figure 3 The liquid cooling plate 200 includes a body portion 240 and a protrusion portion 250. The body portion 240 is connected to the side wall 130. The edge portion is connected to the body portion 240 and protrudes from the top wall 110. Spray holes 230 are provided on the edge portion.

[0048] Specifically, the top wall 110 has a through hole provided along the first direction X, the explosion-proof valve 120 seals the through hole, and the protrusion 250 is connected to one side of the body 240 along the first direction X, where the first direction X is... Figure 3 The direction indicated by the middle arrow X is perpendicular to the first direction X and the third direction Z.

[0049] In the above embodiment, by setting the spray hole 230 on the edge of the top wall 110, the straight distance from the spray hole 230 to the explosion-proof valve 120 can be reduced, so that after the explosion-proof valve 120 is broken, the high-temperature gas and flame can directly rush to the cover 300, so that the cover 300 can react to thermal runaway more quickly, and spray cooling medium onto the thermally runaway single cell 100 and the surrounding single cells 100 more quickly, thereby reducing the spread rate of thermal runaway.

[0050] In some embodiments, please refer to Figure 4 and Figure 5 The edge portion is provided with multiple spray holes 230, which are arranged sequentially at intervals. A cover 300 is connected to the edge portion and covers at least two spray holes 230. Figure 4 and Figure 5 The dashed lines in the image represent the outline of the spray nozzle 230 wall after being viewed through a microscope.

[0051] In some embodiments, the battery pack includes a plurality of individual cells 100, which are arranged along a second direction Y, and a plurality of spray holes 230 are also arranged along the second direction Y. The second direction Y is the direction indicated by the arrow Y in the figure. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0052] Firstly, in the above embodiments, by setting multiple spray holes 230, the straight-line distance between each explosion-proof valve 120 and the nearest spray hole 230 is reduced, thereby exposing the spray holes 230 more quickly in the event of thermal runaway, so as to release the cooling medium more quickly to cool down the single cell 100 and reduce the spread rate of thermal runaway.

[0053] Secondly, in the above embodiments, allowing the cover 300 to cover multiple spray holes 230 can increase the contact area between the cover 300 and the connecting surface 210, thereby improving the sealing reliability between the cover 300 and the connecting surface 210.

[0054] It is understandable that the cooling medium in the flow channel 220 of the liquid cooling plate 200 is limited. By setting multiple spray holes 230, the amount of cooling medium can be reasonably allocated, so that the cooling medium can be preferentially sprayed onto the individual cells 100 with higher temperatures, so as to more efficiently suppress the spread rate of thermal runaway.

[0055] In some embodiments, the number of spray holes 230 and explosion-proof valves 120 are equal, and the heat and flame emitted from each explosion-proof valve 120 can be directed toward the corresponding spray hole 230 so as to burn the cover 300 at the corresponding spray hole 230.

[0056] In some embodiments, please refer to Figure 3 and Figure 5The top wall 110 and the cover 300 are spaced apart.

[0057] In some embodiments, the top wall 110 and the cover 300 are spaced apart along the second direction Y.

[0058] Firstly, in the above embodiments, the spaced arrangement between the top wall 110 and the cover 300 can maintain a safe distance, reducing the possibility that under normal operating conditions, the individual battery 100 may move or expand relative to the liquid cooling plate 200 and come into contact with the cover 300, causing the cover 300 to move and thus be accidentally opened, thereby improving the reliability of the battery pack and the accuracy of the cover 300 being triggered.

[0059] Secondly, in the above embodiments, the spaced arrangement between the top wall 110 and the cover 300 can reduce the direct impact of the heat generated by the single cell 100 during operation on the connection between the sealing component and the liquid cooling plate 200, making the connection between the sealing component and the liquid cooling plate 200 more reliable.

[0060] Thirdly, the spaced top wall 110 and sealing components can also provide sufficient operating space for the installation of the individual battery 100 and the liquid cooling plate 200, reducing the risk of the individual battery 100 and the sealing components touching each other during installation, thus affecting the connection between the sealing components and the liquid cooling plate 200.

[0061] In some embodiments, please refer to Figure 3 The battery pack also includes a heat-conducting component 400, which is disposed between the side wall 130 and the connecting surface 210 and is connected to the side wall 130 and the connecting surface 210 respectively. The heat-conducting component 400 and the cover component 300 are spaced apart.

[0062] In some embodiments, the thermally conductive component 400 is a thermally conductive adhesive, so that the connection surface 210 between the liquid cooling plate 200 and the single cell 100 is larger, the heat transfer efficiency is higher, and the heat dissipation effect of the liquid cooling plate 200 is better.

[0063] In the first direction X, in the above embodiment, the heat-conducting element 400 and the cover element 300 are arranged at intervals, which can block the heat from being directly transferred from the heat-conducting element 400 to the cover element 300, reduce the possibility of the cover element 300 being damaged by high temperature under normal operating conditions, resulting in false triggering, and improve the reliability of the battery pack.

[0064] Secondly, in the above embodiments, when a single cell 100 experiences thermal runaway, the spaced heat-conducting component 400 and the sealing component 300 can also reduce the possibility of the spray holes 230 other than the spray holes 230 corresponding to the thermal runaway single cell 100 being exposed, so as to concentrate the cooling medium sprayed onto the thermal runaway single cell 100, thereby more efficiently reducing the speed of thermal runaway propagation.

[0065] Thirdly, in the above embodiments, the interval setting can reduce the impact of contaminants generated by the oxidation of the heat-conducting component 400 after long-term use on the sealing reliability of the cover 300 and the connecting surface 210, and extend the service life of the cover 300.

[0066] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The battery pack also includes a housing 500 and a crossbeam 600. The housing 500 has a receiving cavity 510, in which a single battery 100 is disposed. The side of the single battery 100 facing away from the side wall 130 is connected to the housing 500. The crossbeam 600 is disposed in the receiving cavity 510 and connected to the side of the housing 500 near the single battery 100. The housing 500, the crossbeam 600 and the top wall 110 are spaced apart to form the receiving space 610. The spray holes 230 face the receiving space 610.

[0067] Understandably, the more of a single cell 100 is immersed in the cooling medium, the slower the thermal runaway spreads.

[0068] In the above embodiment, by setting the crossbeam 600, some of the cooling medium that is not directly sprayed onto the individual battery 100 can be blocked, and a smaller receiving space 610 is formed between the individual battery 100 and the bottom of the casing 500 than the receiving cavity 510. This allows the liquid level of the cooling medium to be raised more quickly with an equal amount of cooling medium, so that the individual battery 100 can be immersed in the cooling medium more quickly, thereby further reducing the spread rate of thermal runaway.

[0069] In some embodiments, the battery pack includes a plurality of crossbeams 600 connected end to end in sequence, which can reduce the flow of cooling medium to the side of the crossbeams 600 away from the individual battery cells 100, thereby enabling the cooling medium to be raised more quickly in the containment space 610 to further reduce the spread rate of thermal runaway.

[0070] In some embodiments, please refer to Figure 2 The crossbeam 600 is positioned between the liquid cooling plate 200 and the shell 500.

[0071] Specifically, the crossbeam 600 is positioned along the third direction Z between the edge of the liquid cooling plate 200 and the housing 500.

[0072] Firstly, in the above embodiments, the crossbeam 600 disposed between the liquid cooling plate 200 and the housing 500 can be closer to the single cell 100, thereby further reducing the volume of the accommodating space 610, which allows the liquid level of the cooling medium entering the accommodating space 610 to rise faster, thereby enabling the single cell 100 to be immersed in the cooling medium more quickly, so as to further reduce the propagation rate of thermal runaway.

[0073] Secondly, in the above embodiments, while reducing the volume of the accommodating space 610, the energy density of the battery pack can also be improved.

[0074] Thirdly, in the above embodiments, the crossbeam 600 inside the battery pack can improve the overall structural strength of the battery pack, can transmit the external impact force to the housing 500, and use the overall rigidity of the housing 500 to disperse stress, prevent the housing 500 from cracking due to local stress, ensure the structural integrity of the battery pack, and reduce the risk of internal material leakage.

[0075] Fourthly, in the above embodiments, the crossbeam 600 can block the thermal runaway ejected from the explosion-proof valve 120 from reaching the housing 500, thereby reducing the possibility of the thermal runaway ejected from the housing 500 and corroding it.

[0076] In some embodiments, please refer to Figure 3 and Figure 5 The single cell 100 also includes a terminal post 140, which passes through and is connected to the top wall 110. The terminal post 140 is spaced apart from the explosion-proof valve 120 and is located on the side of the explosion-proof valve 120 away from the liquid cooling plate 200.

[0077] Specifically, the pole post 140 is positioned at a Z-interval along the third direction on the side of the explosion-proof valve 120 away from the liquid cooling plate 200.

[0078] In the above embodiments, by spaced out the explosion-proof valves 120 on the side of the electrode post 140 close to the liquid cooling plate 200, the obstruction of the thermal runaway ejected from the explosion-proof valves 120 by the electrode post 140 can be reduced, so that the thermal runaway ejected can be directly sprayed onto the cover 300, making the cover 300 more sensitive to the thermal runaway of the single cell 100, and able to react more quickly to the thermal runaway of the single cell 100, thereby reducing the speed of thermal runaway propagation.

[0079] In some embodiments, the battery pack further includes a connecting piece and a protective element 700. The connecting piece connects the terminals 140 of two adjacent individual cells 100 to connect the adjacent individual cells 100 in series. The protective element 700 is connected to the side of the connecting piece away from the terminals 140 to reduce the possibility of short circuit at the connecting piece.

[0080] In some embodiments, the protective element 700 is a ceramic silicone strip.

[0081] In some embodiments, the battery pack further includes a sensor connected to a liquid cooling plate 200, which is configured to adjust the flow rate of liquid within the flow channel 220 based on the sensor signal.

[0082] In some embodiments, a sensor is disposed in the flow channel 220. The sensor can acquire the pressure of the cooling medium in the flow channel 220 and send a signal to the liquid cooling device connected to the liquid cooling plate 200 outside the battery pack. The liquid cooling device can adjust the flow rate and duration of the cooling medium according to the signal sent by the sensor to achieve more precise control.

[0083] In some embodiments, when a significant pressure drop occurs in the flow channel 220, it means that the spray hole 230 has been opened. At this time, after receiving the signal, the controller of the liquid cooling device outside the battery pack controls the liquid cooling pump to increase the flow rate of the cooling medium and increase the supply of the cooling medium inside the containment cavity 510 to suppress the spread of thermal runaway.

[0084] In some embodiments, multiple sensors are distributed within the housing cavity 510. The sensors can acquire the temperature distribution within the housing cavity 510 and send signals to the liquid cooling device connected to the liquid cooling plate 200 outside the battery pack. The liquid cooling device can adjust the flow rate and duration of the cooling medium according to the signals sent by the sensors to achieve more precise control.

[0085] In some embodiments, when sensors distributed in different locations within the battery pack transmit high-temperature signals, it means that thermal runaway has begun to spread. After receiving the signal, the controller of the liquid cooling device outside the battery pack controls the liquid cooling pump to increase the flow rate of the cooling medium and increase the supply of cooling medium inside the containment cavity 510 to suppress the spread of thermal runaway.

[0086] Accordingly, this application also provides a vehicle including a battery pack as described in any of the above embodiments.

[0087] In some embodiments, the vehicle includes a liquid cooling device, which includes a liquid cooling pump, a liquid storage tank, and a controller connected to a liquid cooling plate 200. The liquid cooling pump and the liquid outlet pipe are connected to the flow channel 220 in the liquid cooling plate 200 to form a circulation path. The controller can control the liquid cooling pump to achieve flow control of the cooling medium.

[0088] The battery pack and vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used in this application 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 technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that, include: A single battery cell (100) includes a top wall (110), an explosion-proof valve (120), and a side wall (130). The explosion-proof valve (120) is connected to the top wall (110), and the side wall (130) is connected to the top wall (110). A liquid cooling plate (200) has a connecting surface (210), a side wall (130) is connected to the connecting surface (210), the liquid cooling plate (200) also has a flow channel (220) and a spray hole (230) communicating with the flow channel (220), the spray hole (230) is disposed on the connecting surface (210), and the orthographic projection of the side wall (130) on the connecting surface (210) is spaced apart from the spray hole (230); A cover (300) is connected to the liquid cooling plate (200) and covers the spray hole (230).

2. The battery pack according to claim 1, characterized in that, The liquid cooling plate (200) includes: The main body (240) is connected to the side wall (130); A protrusion (250) is connected to the main body (240), the protrusion (250) protrudes from the top wall (110), and the spray hole (230) is disposed on the protrusion (250).

3. The battery pack according to claim 2, characterized in that, The protrusion (250) is provided with a plurality of spray holes (230), which are arranged in sequence at intervals. The cover (300) is connected to the protrusion (250) and covers at least two of the spray holes (230).

4. The battery pack according to claim 1, characterized in that, The top wall (110) and the cover (300) are spaced apart.

5. The battery pack according to claim 1, characterized in that, The battery pack also includes a heat-conducting component (400), which is disposed between the side wall (130) and the connecting surface (210) and connects the side wall (130) and the connecting surface (210) respectively. The heat-conducting component (400) and the cover component (300) are spaced apart.

6. The battery pack according to claim 1, characterized in that, The battery pack also includes: The housing (500) has a receiving cavity (510), the single battery (100) is disposed in the receiving cavity (510), and the side of the single battery (100) opposite to the side wall (130) is connected to the housing (500). A crossbeam (600) is disposed in the receiving cavity (510) and connected to the side of the housing (500) near the single battery (100). The housing (500), the crossbeam (600) and the top wall (110) are spaced apart to form a receiving space (610). The spray hole (230) faces the receiving space (610).

7. The battery pack according to claim 6, characterized in that, The crossbeam (600) is disposed between the liquid cooling plate (200) and the housing (500).

8. The battery pack according to claim 1, characterized in that, The single battery cell (100) also includes a terminal post (140), which passes through the top wall (110) and is connected to the top wall (110). The terminal post (140) is spaced apart from the explosion-proof valve (120), and the terminal post (140) is located on the side of the explosion-proof valve (120) away from the liquid cooling plate (200).

9. The battery pack according to claim 6, characterized in that, The battery pack also includes a sensor connected to a liquid cooling plate (200), which is configured to adjust the flow rate of liquid in a flow channel (220) based on the sensor signal.

10. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 1 to 9.

Images