Battery module, battery pack, and vehicle

Abstract

The utility model provides a kind of battery module, battery pack and vehicle, it is related to new energy automobile field.The battery module includes shell, liquid cooling plate and multiple electric cores, liquid cooling plate is set to the bottom surface of shell, liquid cooling plate has heat conduction convex part;Heat conduction convex part is formed with containing groove on liquid cooling plate;And multiple electric cores, multiple electric cores are set in shell, electric core has opposite first face and second face, first face is provided with pressure relief device, and electrode is provided on second face;Wherein, multiple electric cores are arranged on heat conduction convex part, first face is contacted with heat conduction convex part, heat conduction convex part is used to conduct the heat of electric core to liquid cooling plate, and pressure relief device is located in containing groove.When the pressure relief device of electric core opens or electric core leaks, since pressure relief device is located in containing groove, all leaked electrolyte or fallen impurities can be effectively collected in containing groove, solve the safety problem brought by the pressure relief device of electric core after opening.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicles, specifically to battery modules, battery packs, and vehicles. Background Technology

[0002] When battery cells in a battery module encounter extreme conditions, such as overcharging leading to lithium plating on the negative electrode, overheating causing separator shrinkage, or internal impurities causing micro-short circuits, a large amount of heat and gas will be rapidly generated inside the battery. To alleviate internal pressure, the cell's explosion-proof valve will open to release gas when the pressure threshold is exceeded. In existing technologies, the high-pressure gas accompanying the explosion-proof valve during the explosion process may carry hard particles such as electrode fragments and separator residues out. If these particles hit adjacent cell terminals, they may cause a direct short circuit between the positive and negative electrodes, leading to thermal runaway; at the same time, the released fumes and leaked electrolyte will also cause multiple hazards to the entire battery system. Utility Model Content

[0003] This utility model provides a battery module, battery pack and vehicle, which can solve the safety hazard problem caused by the opening of the explosion-proof valve of the battery cell.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] A battery module includes a housing, a liquid cooling plate, and multiple battery cells. The liquid cooling plate is disposed on the bottom surface of the housing and has a heat-conducting protrusion. The heat-conducting protrusion forms a receiving groove on the liquid cooling plate. The multiple battery cells are disposed within the housing and have a first side and a second side facing away from each other. A pressure relief device is disposed on the first side, and an electrode is disposed on the second side. The multiple battery cells are arranged on the heat-conducting protrusion, with the first side in contact with the heat-conducting protrusion. The heat-conducting protrusion conducts heat from the battery cells to the liquid cooling plate. The pressure relief device is located within the receiving groove.

[0006] Optionally, the heat-conducting protrusion is formed into a U-shaped structure, and the heat-conducting protrusion is spaced from the peripheral wall of the housing to form a channel; the heat-conducting protrusion includes a first cooling section, a connecting section and a second cooling section connected in sequence, and the receiving groove is located in the area enclosed by the first cooling section, the connecting section and the second cooling section; wherein, the opening of the heat-conducting protrusion communicates with the channel.

[0007] Optionally, the number of thermally conductive protrusions is multiple, and the battery module further includes a connecting section; the number of thermally conductive protrusions is multiple, the multiple thermally conductive protrusions are spaced apart and have the same opening direction, and any two adjacent thermally conductive protrusions are connected through the connecting section; the multiple battery cells are distributed in multiple rows, and the multiple rows of battery cells are correspondingly arranged with the multiple thermally conductive protrusions.

[0008] Optionally, the housing has a rectangular structure, and the channel is annular; the annular channel includes a first channel, a second channel, a third channel, and a fourth channel connected in sequence, the first channel is parallel to the third channel, the second channel is parallel to the fourth channel, the first channel, the first cooling section, and the second cooling section are parallel to each other; the second channel is parallel to the connecting section.

[0009] Optionally, a gap groove is formed between two adjacent heat-conducting protrusions, the width of which is smaller than the width of the receiving groove.

[0010] Optionally, the battery module further includes an end plate, the two ends of which are connected to the housing to limit the position of the plurality of battery cells; the side of the end plate away from the plurality of battery cells is spaced apart from the housing, and the spaced position exposes part of the receiving groove.

[0011] Optionally, the battery module further includes a water inlet and a water outlet, both of which are located on the heat-conducting protrusion.

[0012] Optionally, the pressure relief device is disposed in the middle of the first surface, and both ends of the first surface are in contact with the heat-conducting protrusion, and the pressure relief device is located in the center of the receiving groove.

[0013] An embodiment of this utility model also provides a battery pack, which includes a plurality of the above-described battery modules, the plurality of battery modules being stacked on top of each other.

[0014] An embodiment of this utility model also provides a vehicle, which includes the battery pack described above.

[0015] The beneficial effects of the battery module, battery pack, and vehicle according to the embodiments of this utility model include, for example:

[0016] The battery module, battery pack, and vehicle include a housing, a liquid cooling plate, and multiple battery cells. The liquid cooling plate is disposed on the bottom surface of the housing and has a heat-conducting protrusion. The heat-conducting protrusion forms a receiving groove on the liquid cooling plate. The multiple battery cells are disposed inside the housing and have a first side and a second side facing away from each other. A pressure relief device is disposed on the first side and an electrode is disposed on the second side. The multiple battery cells are arranged on the heat-conducting protrusion, with the first side in contact with the heat-conducting protrusion. The heat-conducting protrusion is used to conduct the heat of the battery cells to the liquid cooling plate. The pressure relief device is located inside the receiving groove.

[0017] By placing the electrodes and pressure relief device on opposite sides of the battery cell, the relative positions of the receiving tank and the pressure relief device are optimized, eliminating the limitations imposed by the electrode arrangement on their installation locations. Furthermore, positioning the electrodes opposite the pressure relief device significantly reduces the potential impact on adjacent cells when the device is activated. When the pressure relief device is activated or a cell leaks, because multiple cells are arranged on the heat-conducting protrusion and the pressure relief device is located within the receiving tank, all leaked electrolyte or detached impurities are effectively collected. This not only ensures that the pressure relief process of an abnormal cell does not interfere with other normal cells but also significantly improves the safety and operational reliability of the entire battery module, battery pack, and vehicle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the battery module provided in this embodiment from a first-view perspective;

[0020] Figure 2 This is a schematic diagram of the battery module (excluding the battery cells) provided in this embodiment from a second perspective.

[0021] Figure 3 This is a schematic diagram of the battery module provided in this embodiment from a third-person perspective;

[0022] Figure 4 This is a schematic diagram of the battery cell provided in this embodiment from a first-view perspective;

[0023] Figure 5 This is a schematic diagram of the battery cell provided in this embodiment from a second perspective.

[0024] Icons: 10-Battery module; 100-Housing; 101-Bottom; 200-Liquid cooling plate; 300-Battery cell; 210-Heat-conducting protrusion; 230-Receiving groove; 310-First surface; 320-Second surface; 311-Pressure relief device; 321-Electrode; 250-Channel; 211-First cooling section; 212-Connecting section; 213-Second cooling section; 251-First channel; 252-Second channel; 253-Third channel; 254-Fourth channel; 260-Connecting section; 240-Gap groove; 270-Water inlet interface; 280-Water outlet interface; 600-End plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0029] When the battery cell 300 in the battery module 10 encounters extreme operating conditions, the pressure relief device 311 of the battery cell 300 will open. During the opening process of the pressure relief device 311, the high-pressure gas may carry hard particles such as electrode fragments and separator residues or liquids out, which will pose a great safety hazard to the battery module 10.

[0030] In view of this, please refer to Figures 1 to 5 The present invention provides a battery module 10 that can solve the above problems, which will be described in detail below.

[0031] The battery module 10 includes a housing 100, a liquid cooling plate 200, and multiple battery cells 300. The liquid cooling plate 200 is disposed on the bottom surface 101 of the housing 100 and has a heat-conducting protrusion 210. The heat-conducting protrusion 210 forms a receiving groove 230 on the liquid cooling plate 200. The multiple battery cells 300 are disposed inside the housing 100. Each battery cell 300 has a first side 310 and a second side 320 facing away from each other. A pressure relief device 311 is disposed on the first side 310, and an electrode 321 is disposed on the second side 320. The multiple battery cells 300 are arranged on the heat-conducting protrusion 210, and the first side 310 is in contact with the heat-conducting protrusion 210. The heat-conducting protrusion 210 is used to conduct the heat of the battery cells 300 to the liquid cooling plate 200. The pressure relief device 311 is located inside the receiving groove 230.

[0032] In the prior art, the electrodes 321 and the pressure relief device 311 of the battery cell 300 in the battery module 10 are usually located on the same side of the battery cell 300. Please refer to... Figure 4 and Figure 5 In this invention, the electrode 321 and the pressure relief device 311 are respectively disposed on two opposite surfaces of the battery cell 300. On the one hand, this adapts to the positional relationship between the receiving groove 230 and the pressure relief device 311, eliminating the limitation imposed by the arrangement of the electrode 321 on the installation positions of the receiving groove 230 and the pressure relief device 311. On the other hand, by placing the electrode 321 on the opposite side of the pressure relief device 311, the potential impact of the pressure relief device 311 on adjacent battery cells 300 when it is activated is significantly reduced. In practical applications, when the pressure relief device 311 of the battery cell 300 is activated or the battery cell 300 leaks, since multiple battery cells 300 are arranged on the heat-conducting protrusion 210 and the pressure relief device 311 is located in the receiving groove 230, all leaked electrolyte or detached impurities will be effectively collected in the receiving groove 230. This not only ensures that the pressure relief process of the abnormal battery cell 300 will not interfere with other normal battery cells 300, but also significantly improves the safety and operational reliability of the entire battery module 10.

[0033] In this embodiment, the battery cell 300 is a square battery cell. In some embodiments, a cylindrical battery cell may also be used.

[0034] It is easy to understand that the pressure relief device 311 can be an explosion-proof valve (such as an explosion-proof disc or pressure relief valve), or it can be composed of phase change material (PCM), elastic deformation material, etc.

[0035] Optionally, the heat-conducting protrusion 210 is formed into a U-shaped structure, and the heat-conducting protrusion 210 is spaced from the peripheral wall of the housing 100 to form a channel 250; the heat-conducting protrusion 210 includes a first cooling section 211, a connecting section 212 and a second cooling section 213 connected in sequence, and the receiving groove 230 is located in the area enclosed by the first cooling section 211, the connecting section 212 and the second cooling section 213; wherein, the opening of the heat-conducting protrusion 210 communicates with the channel 250.

[0036] In this embodiment, three U-shaped heat-conducting protrusions 210 are spaced apart. Each heat-conducting protrusion 210 consists of a first cooling section 211, a connecting section 212, and a second cooling section 213 connected in sequence. The first cooling section 211, the connecting section 212, and the second cooling section 213 together form a receiving groove 230. A pressure relief device 311 is located inside the receiving groove 230, and the pressure relief device 311 of the battery cell 300 corresponds to the receiving groove 230. When the battery cell 300 leaks accidentally, the material discharged by the pressure relief device 311 can be effectively collected by the receiving groove 230 below, thereby achieving the directional containment function of the leaked material, ensuring the normal operation of the cooling system and providing a reliable pressure relief protection measure for battery safety. Furthermore, the heat-conducting protrusion 210 is spaced from the peripheral wall of the housing 100 to form a channel 250, and the opening of the heat-conducting protrusion 210 is connected to the channel 250. Therefore, the leaked material located in the receiving tank 230 can be dispersed and transferred to other areas in a timely manner, avoiding corrosion damage to the receiving tank 230 caused by a large amount of leaked material.

[0037] It is easy to understand that in the battery module 10, the coolant flows in the heat-conducting protrusion 210, and its flow path is as follows: first cooling section 211 - connecting section 212 - second cooling section 213. After completing a U-shaped cycle, it continues to flow into the next heat-conducting protrusion 210, thereby cooling the multiple battery cells 300 placed on the heat-conducting protrusion 210.

[0038] Optionally, the battery module 10 further includes a connecting section 260; there are multiple heat-conducting protrusions 210, which are spaced apart and have the same opening direction, and any two adjacent heat-conducting protrusions 210 are connected through the connecting section 260; multiple battery cells 300 are arranged in multiple rows, and the multiple rows of battery cells 300 are correspondingly arranged with the multiple heat-conducting protrusions 210.

[0039] Please refer to the figure. In this embodiment, the openings of each heat-conducting protrusion 210 face the short side of the square housing 100. Among two adjacent heat-conducting protrusions 210, the end of the second cooling section 213 of one heat-conducting protrusion 210 is connected to the end of the first cooling section 211 of the other heat-conducting protrusion 210 through a connecting section 260, thereby connecting multiple heat-conducting protrusions 210. The connecting section 260 adopts the same structural configuration as the connecting section 212. In some embodiments, to improve the coolant distribution effect, the shape of the connecting section 260 can be adjusted as follows: 1. A multi-branch structure can be used to simultaneously connect the cooling sections of multiple heat-conducting protrusions 210; 2. The connection position with the cooling section can be flexibly selected, either at the end of the cooling section, in the middle of the cooling section, or at other positions.

[0040] Optionally, the housing 100 has a rectangular structure, and the channel 250 is annular; the annular channel 250 includes a first channel 251, a second channel 252, a third channel 253, and a fourth channel 254 connected in sequence. The first channel 251 is parallel to the third channel 253, the second channel 252 is parallel to the fourth channel 254, the first channel 251, the first cooling section 211, and the second cooling section 213 are parallel to each other; the second channel 252 is parallel to the connecting section 212.

[0041] By setting up the first channel 251, the second channel 252, the third channel 253, and the fourth channel 254, the flow-guiding ability of leaked materials can be enhanced, causing them to move away from the battery cell 300 along a preset path, thereby reducing the risk of leakage. At the same time, by aligning the extension direction of the channel 250 with the cooling section and the connecting section 212, the structural layout of the heat-conducting protrusion 210 can be optimized, thereby allowing for the efficient arrangement of more battery cells 300 in its upper space, ultimately improving the energy density of the battery module 10.

[0042] In some embodiments, the receiving groove 230 is inclined along its extension direction, specifically, the height of the end near the connecting section 212 is greater than the height of the end away from the connecting section 212. This height difference structure allows leaked material to flow directionally downwards along the inclined bottom under gravity, thereby being quickly transferred to an area away from the battery cell 300, thus improving the safety performance of the battery module 10.

[0043] In some embodiments, a special baffle structure (not shown in the figure) may be provided at the opening of the spacer slot 240. The two ends of this baffle are connected to the connecting section 212 of the adjacent heat-conducting protrusion 210 to form a physical barrier, preventing leaks from the second channel 252 and the fourth channel 254 from flowing back into the spacer slot 240. The baffle increases the spatial distance between the leaked material and the battery cell 300, significantly reducing the safety risks caused by leaks.

[0044] Optionally, a spacer groove 240 is formed between two adjacent heat-conducting protrusions 210, and the width of the spacer groove 240 is smaller than the width of the receiving groove 230.

[0045] refer to Figure 1 and Figure 2The relatively narrow design of the spacer slot 240 is primarily to provide more ample space for the cooling sections (first cooling section 211 and second cooling section 213) of the heat-conducting protrusion 210 and the receiving slot 230 within the layout of the liquid cooling plate 200. On one hand, it ensures that the first cooling section 211 and the second cooling section 213 have sufficient structural width to meet both mechanical strength requirements and the effective heat exchange area with the battery cell 300. On the other hand, it provides greater flexibility in the width design of the receiving slot 230, allowing for targeted optimization based on the size and specifications of the pressure relief device 311 of the battery cell 300 in specific application scenarios and the physical characteristics (such as fluidity, volatility, and corrosiveness) of the expected leaked substances, thereby achieving a balance between the collection function and thermal management function of the liquid cooling plate 200. This differentiated slot width design fully reflects the systematic coordination of the structural strength, cooling efficiency, and safety protection of the battery module 10.

[0046] Optionally, the battery module 10 also includes an end plate 600, the two ends of which are connected to the housing 100 to limit the multiple battery cells 300; the side of the end plate 600 away from the multiple battery cells 300 is spaced apart from the housing 100, and the spaced position exposes part of the receiving groove 230.

[0047] refer to Figure 1 and Figure 3 Multiple battery cells 300 are arranged in an array. The long side of the array directly contacts the perimeter wall of the housing 100, and the housing 100 provides the main support and positioning. The short side of the array is constrained by end plates 600, and the two ends of the end plates 600 are connected to the housing 100. Specifically, the end plates 600 can be connected to the housing 100 by welding (such as laser welding, ultrasonic welding, etc.) or mechanical fastening methods (such as bolt / screw connection, riveting, etc.).

[0048] It is easy to understand that the end plate 600 is located directly above the heat-conducting protrusion 210, and its top view projection is completely within the area defined by the connecting section 212, the connecting section 260 and the housing 100. This confines the multiple cells 300 to the central area of ​​the heat-conducting protrusion 210, avoiding the structural risks caused by the edge of the cell 300 being suspended, and at the same time reducing the impact of leakage in the second channel 252 and the fourth channel 254 on the cell 300.

[0049] In some embodiments, there is a filler between the long side of the cell array 300 and the housing 100 to increase the safe distance between the cell 300 and the first channel 251 and the third channel 253, while limiting the cell array 300.

[0050] Optionally, the battery module 10 also includes a water inlet 270 and a water outlet 280, both of which are located on the heat-conducting protrusion 210. The water inlet 270 and the water outlet 280 are directly integrated into the heat-conducting protrusion 210, forming the shortest path coolant circulation channel 250.

[0051] Optionally, the pressure relief device 311 is disposed in the middle of the first surface 310, and both ends of the first surface 310 are in contact with the heat-conducting protrusion 210, and the pressure relief device 311 is located in the center of the receiving groove 230.

[0052] The pressure relief device 311 is disposed in the central region of the first surface 310 of the battery cell 300, wherein the two side edge regions of the first surface 310 are thermally connected to the first cooling section 211 and the second cooling section 213 of the heat-conducting protrusion 210. In particular, the installation position of the pressure relief device 311 is perpendicular to the longitudinal centerline of the lower receiving groove 230, and the pressure relief airflow direction is optimized through the central symmetry design, guiding the leaked material to be discharged directionally along the receiving groove 230.

[0053] It should be noted that the following two key performance requirements need to be considered when selecting materials for the liquid cooling plate 200: First, since multiple heat-conducting protrusions 210 on the liquid cooling plate 200 need to support multiple battery cells 300, the liquid cooling plate 200 must be made of a material with sufficient mechanical strength to ensure structural stability. Second, considering that the liquid cooling plate 200 also serves to collect leakage from the battery cells 300, the selected material must have excellent corrosion resistance, resisting chemical erosion from electrolytes, flue gases, and other substances, to avoid affecting the cooling performance and service life of the liquid cooling plate 200 due to material corrosion. Therefore, when selecting materials for the liquid cooling plate 200, its mechanical properties and chemical stability need to be comprehensively evaluated. Corrosion-resistant aluminum alloys or stainless steel, which combine high strength and corrosion resistance, are commonly used. If necessary, surface treatment processes can be used to further enhance its protective performance.

[0054] In some embodiments, to further reduce the impact of leaked material on the safety of the liquid cooling plate 200 and the battery cell 300, a connecting hole can be opened in the side wall of the housing 100, and a leaked material collector can be installed outside the housing 100, with the channel 250 communicating with the external leaked material collector. In actual working scenarios, the battery module 10 utilizes the synergistic effect of the channel 250 to complete the initial collection of leaked material. The collected leaked material flows into the leaked material collection container installed outside the housing 100 through the connecting hole in the side wall of the housing 100. This structural arrangement not only completely isolates the leaked material from contact with critical components (battery cell 300, liquid cooling plate 200), but also significantly improves the overall safety level of the battery system by transferring hazardous substances to an independent sealed space, while facilitating subsequent maintenance and handling.

[0055] This embodiment also provides a battery pack, which includes the battery module 10 described above.

[0056] This embodiment also provides a vehicle that includes the aforementioned battery pack.

[0057] The working principle and process of the battery module 10, battery pack, and vehicle provided in this embodiment of the utility model are as follows:

[0058] When the pressure relief device 311 of the battery cell 300 is opened, since the pressure relief device 311 is located inside the receiving tank 230, the high-pressure gas accompanying the opening of the pressure relief device 311 may carry hard particles such as electrode 321 fragments and separator residue, or liquid, into the receiving tank 230. Furthermore, the receiving tank 230 is interconnected with the first channel 251, the second channel 252, the third channel 253, and the fourth channel 254, allowing leaks from the battery cell 300 to be promptly transferred to the channels 250, achieving diversion and storage of the leaks. Finally, the leaks stored in the channels 250 can flow through the connecting holes into a leak collection container located outside the housing 100, transferring the leaks to an independent sealed space, improving the overall safety level of the battery system, and facilitating subsequent maintenance.

[0059] In summary, with multiple battery cells 300 arranged on the heat-conducting protrusion 210 and the pressure relief device 311 located in the receiving tank 230, all leaked electrolyte or detached impurities will be effectively collected in the receiving tank 230. This not only ensures that the pressure relief process of abnormal battery cells 300 will not interfere with other normal battery cells 300, but also significantly improves the safety and operational reliability of the entire battery module 10.

[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A battery module, characterized in that, include: Casing (100); A liquid cooling plate (200) is disposed on the bottom surface (101) of the housing (100), and the liquid cooling plate (200) has a heat-conducting protrusion (210); the heat-conducting protrusion (210) forms a receiving groove (230) on the liquid cooling plate (200). as well as Multiple battery cells (300) are disposed within the housing (100). Each battery cell (300) has a first side (310) and a second side (320) facing away from each other. A pressure relief device (311) is disposed on the first side (310), and an electrode (321) is disposed on the second side (320). The plurality of battery cells (300) are arranged on the heat-conducting protrusion (210), the first surface (310) is in contact with the heat-conducting protrusion (210), the heat-conducting protrusion (210) is used to conduct the heat of the battery cells (300) to the liquid cooling plate (200), and the pressure relief device (311) is located in the receiving groove (230).

2. The battery module according to claim 1, characterized in that, The heat-conducting protrusion (210) is formed in a U-shape, and the heat-conducting protrusion (210) is spaced from the peripheral wall of the housing (100) to form a channel (250); the heat-conducting protrusion (210) includes a first cooling section (211), a connecting section (212) and a second cooling section (213) connected in sequence, and the receiving groove (230) is located in the area enclosed by the first cooling section (211), the connecting section (212) and the second cooling section (213); The opening of the heat-conducting protrusion (210) is connected to the channel (250).

3. The battery module according to claim 2, characterized in that, The battery module also includes a connecting section (260); there are multiple heat-conducting protrusions (210), which are spaced apart and have the same opening direction, and any two adjacent heat-conducting protrusions (210) are connected through the connecting section (260); The multiple battery cells (300) are arranged in multiple rows, and the multiple rows of battery cells (300) are correspondingly arranged with multiple heat-conducting protrusions (210).

4. The battery module according to claim 3, characterized in that, The housing (100) has a rectangular structure, and the channel (250) is annular; The annular channel (250) includes a first channel (251), a second channel (252), a third channel (253), and a fourth channel (254) connected in sequence. The first channel (251) is parallel to the third channel (253), the second channel (252) is parallel to the fourth channel (254), the first channel (251), the first cooling section (211), and the second cooling section (213) are parallel to each other; the second channel (252) is parallel to the connecting section (212).

5. The battery module according to claim 3, characterized in that, A spacer groove (240) is formed between two adjacent heat-conducting protrusions (210), and the width of the spacer groove (240) is smaller than the width of the receiving groove (230).

6. The battery module according to claim 1, characterized in that, The battery module (10) also includes an end plate (600), the two ends of which are connected to the housing (100) to limit the position of the plurality of battery cells (300); The end plate (600) is spaced apart from the housing (100) on the side away from the plurality of cells (300), and the spaced position exposes part of the receiving groove (230).

7. The battery module according to claim 1, characterized in that, The battery module (10) also includes a water inlet (270) and a water outlet (280), both of which are located on the heat-conducting protrusion (210).

8. The battery module according to claim 1, characterized in that, The pressure relief device (311) is located in the middle of the first surface (310), and both ends of the first surface (310) are in contact with the heat-conducting protrusion (210). The pressure relief device (311) is located in the center of the receiving groove (230).

9. A battery pack, characterized in that, The battery pack includes a plurality of battery modules as described in any one of claims 1-8, wherein the plurality of battery modules (10) are stacked on top of each other.

10. A vehicle, characterized in that, The vehicle includes the battery pack as described in claim 9.

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