Liquid cooling plate and battery pack

Abstract

The application discloses a liquid cooling plate and a battery pack, and relates to the technical field of batteries. The liquid cooling plate comprises at least two liquid cooling parts and a reinforcing part, the at least two liquid cooling parts are arranged at intervals along a first direction; the reinforcing part is connected between two adjacent liquid cooling parts in the first direction, and the reinforcing part has a reinforcing flow channel for fluid communication between the two adjacent liquid cooling parts. Each liquid cooling part can independently absorb heat and take away the heat through an internal flow medium (usually a cooling liquid). Since the effective fluid communication between the liquid cooling parts is realized through the reinforcing part, not only the flow channel is supported, but also the mechanical strength and stability of the whole structure are enhanced, so that the efficiency of the whole heat dissipation system is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a liquid cooling plate and a battery pack. Background Technology

[0002] With the increasing popularity of new energy vehicles, the requirements for the power batteries used in these vehicles are becoming more and more stringent. The high-power square battery modules in the battery pack generate a large amount of heat during charging and discharging, requiring coolant to circulate externally to remove this heat and ensure that the temperature of electronic components remains within a controllable range.

[0003] During use, liquid cooling plates are prone to deformation or damage under external forces, which may cause poor coolant flow, thereby reducing battery cooling efficiency, leading to excessively high battery temperature, and affecting battery performance and lifespan. Utility Model Content

[0004] The purpose of this application is to provide a liquid cooling plate and a battery pack to solve the technical problem that the liquid cooling plate is easily damaged during use, affecting the battery cooling efficiency.

[0005] To achieve the above objectives, this application provides a liquid-cooled plate, which includes:

[0006] At least two liquid cooling sections are arranged at intervals along a first direction;

[0007] The reinforcing section is connected between two adjacent liquid cooling sections in a first direction. The reinforcing section has a reinforcing flow channel for fluid communication between the two adjacent liquid cooling sections.

[0008] In some embodiments, the liquid cooling plate further includes:

[0009] The first cover plate, the second cover plate, and the flow channel plate are arranged in a third direction between the first cover plate and the second cover plate, and the three cooperate with each other to form a liquid cooling cavity.

[0010] The flow channel plate includes multiple first baffles, each of which extends along a first direction and is connected between a first cover plate and a second cover plate in a third direction. The multiple first baffles are spaced apart in a second direction to form multiple first liquid cooling channels in the liquid cooling cavity. Each first baffle has multiple blocking sections spaced apart along the first direction, and two adjacent blocking sections are the first blocking section and the second blocking section.

[0011] The reinforcing section has multiple first reinforcing blocks, which are spaced apart in the second direction. Each first reinforcing block is connected between the first blocking section and the second blocking section in the first direction, and a reinforcing flow channel is provided between two adjacent first reinforcing blocks.

[0012] In some embodiments, at least one side of the first reinforcing block protrudes from the sidewall of the first water-proof plate in the second direction, and at least one of the first reinforcing blocks has a first connecting hole that extends through the first direction.

[0013] In some embodiments, the reinforcing portion further includes a plurality of second reinforcing blocks, at least one of which is disposed between two adjacent first reinforcing blocks.

[0014] In some embodiments, at least one second reinforcing block has a second connecting hole extending through a third direction.

[0015] In some embodiments, the second reinforcing block includes a first sub-reinforcing block and a second sub-reinforcing block, wherein the first sub-reinforcing block and / or the second sub-reinforcing block are disposed within a reinforcing flow channel, wherein the first sub-reinforcing block has a third connecting hole extending through a third direction.

[0016] In some embodiments, the liquid cooling plate includes a first cover plate, a second cover plate, and a flow channel plate, wherein the flow channel plate is disposed between the first cover plate and the second cover plate in a third direction, and the three cooperate with each other to form a liquid cooling cavity.

[0017] The flow channel plate includes a plurality of first baffles, each of which extends along a first direction and is connected between a first cover plate and a second cover plate in a third direction. The plurality of first baffles are spaced apart in a second direction to divide the liquid cooling cavity into a plurality of first liquid cooling flow channels.

[0018] The reinforcing section has multiple third reinforcing blocks, which are disposed between two adjacent first baffles to form a reinforcing flow channel within the first liquid cooling flow channel.

[0019] In some embodiments, at least one third reinforcing block has a fourth connecting hole extending through the third direction.

[0020] In some embodiments, the liquid cooling plate further includes: a plurality of second water baffles, the second water baffles extending along a second direction and located at the end of the first water baffle and connected to the corresponding first water baffles, the plurality of second water baffles being spaced apart in a first direction to form a plurality of second liquid cooling channels in the liquid cooling cavity, the second liquid cooling channels being in fluid communication with the corresponding first liquid cooling channels.

[0021] In some embodiments, the liquid cooling plate further includes: a plurality of turbulence fins disposed within a first liquid cooling channel and / or a second liquid cooling channel.

[0022] In some embodiments, the liquid cooling plate is provided with a liquid inlet and a liquid outlet, which are abutted together, and the liquid inlet, the liquid outlet, the first liquid cooling channel and the second liquid cooling channel are in fluid communication with each other.

[0023] This application also provides a battery pack, the battery pack comprising:

[0024] At least two battery modules are stacked along a third direction, and each battery module includes multiple battery cells arranged along a first direction; and

[0025] The liquid cooling plate mentioned above is disposed between two adjacent battery modules in a third direction.

[0026] In some embodiments, the battery pack further includes: a first separator and a second separator, the first separator being located at at least one end of the battery module in a first direction, and the second separator being located between two adjacent battery cells; the second separator having a first through hole extending in a third direction, and the liquid cooling plate having a second through hole communicating with the first through hole at a position corresponding to the reinforcing portion.

[0027] The technical advantage of this application lies in providing a liquid cooling plate and a battery pack. The liquid cooling plate includes at least two liquid cooling sections and a reinforcing section. The at least two liquid cooling sections are arranged at intervals along a first direction. The reinforcing section is connected between two adjacent liquid cooling sections in the first direction and has a reinforced flow channel for fluid communication between the two adjacent liquid cooling sections. Each liquid cooling section can independently absorb heat and remove it through an internal flow medium (usually coolant). Because the liquid cooling sections are effectively fluidly connected through the reinforcing section, it not only supports the flow channel but also helps to enhance the mechanical strength and stability of the entire structure, thus significantly improving the efficiency of the entire heat dissipation system. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a schematic diagram of the overall structure of the battery module provided in the embodiments of this application.

[0030] Figure 2 This is a schematic diagram of the split structure of the battery module provided in the embodiments of this application.

[0031] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0032] Figure 4 This is a schematic diagram of the overall structure of the liquid cooling plate provided in an embodiment of this application.

[0033] Figure 5 This is a schematic diagram of the split structure of the liquid cooling plate provided in the embodiment of this application.

[0034] Figure 6 Schematic diagram of the flow channel plate provided in the embodiments of this application Figure 1 This mainly reflects the structure of the reinforcement section.

[0035] Figure 7 The flow direction diagram of the flowing medium in the flow channel plate provided in the embodiments of this application.

[0036] Figure 8 This is a schematic diagram of the structure of the first reinforcing block provided in the embodiment of this application, which has a first connecting hole.

[0037] Figure 9 Schematic diagram of the flow channel plate provided in the embodiments of this application Figure 2 This mainly reflects the structure of the reinforcement section.

[0038] Figure 10 This is a schematic diagram of the structure of the second reinforcing block provided in the embodiment of this application, which has a second connecting hole.

[0039] Figure 11 Schematic diagram of the flow channel plate provided in the embodiments of this application Figure 3 This mainly reflects the structure of the reinforcement section.

[0040] Figure 12 for Figure 11 The enlarged view of part B in the middle mainly shows the structure of the two sub-reinforcing blocks of the second reinforcing block.

[0041] Figure 13 Schematic diagram of the flow channel plate provided in the embodiments of this application Figure 4 This mainly reflects the structure of the reinforcement section.

[0042] Figure 14 for Figure 13 The enlarged view of section C mainly shows the structure of the third reinforcing block being placed between two adjacent first baffles.

[0043] Component labels in the attached diagram:

[0044] 1-Liquid cooling section; 11-First cover plate; 12-Second cover plate; 13-Flow channel plate; 131-First baffle plate; 132-Second baffle plate; 1311-First blocking section; 1312-Second blocking section; 101-First liquid cooling flow channel; 102-Second liquid cooling flow channel; 10-Liquid cooling cavity;

[0045] 2-Reinforcing section; 20-Reinforcing flow channel; 21-First reinforcing block; 22-Second reinforcing block; 23-Third reinforcing block; 221-First sub-reinforcing block; 222-Second sub-reinforcing block; 231-Third sub-reinforcing block; 232-Fourth sub-reinforcing block; 201-First connecting hole; 202-Second connecting hole; 203-Third connecting hole; 204-Fourth connecting hole;

[0046] 3-Turbulence fins; 4-Liquid inlet; 5-Liquid outlet;

[0047] 100 - Liquid cooling plate; 200 - Battery module; 2001 - Battery cell; 2002 - Terminal post; 300 - First separator; 400 - Second separator; 500 - Heat-conducting component; 501 - First through hole; 502 - Second through hole; 503 - Third through hole; 601 - First through hole; 602 - Second through hole;

[0048] X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0049] 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.

[0050] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. 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 of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] To address the issue of liquid cooling plates being easily damaged during use, thus affecting battery cooling efficiency, this application provides a liquid cooling plate comprising at least two liquid cooling sections and a reinforcing section. The at least two liquid cooling sections are spaced apart along a first direction. The reinforcing section connects adjacent liquid cooling sections along the first direction and has a reinforced flow channel for fluid communication between the two adjacent liquid cooling sections. Each liquid cooling section can independently absorb heat and remove it through an internal flow medium (usually coolant). Because the liquid cooling sections are effectively fluidly connected through the reinforcing section, it not only supports the flow channel but also enhances the mechanical strength and stability of the entire structure, thus significantly improving the efficiency of the entire heat dissipation system. A detailed description follows.

[0054] Please see Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application embodiment provides a battery pack having a first direction X, a second direction Y, and a third direction Z that intersect each other and are perpendicular to each other. The first direction X is the length direction of the battery pack, the second direction Y is the width direction of the battery pack, and the third direction Z is the height direction of the battery pack.

[0055] The battery pack includes at least two battery modules 200 and a liquid cooling plate 100. The at least two battery modules 200 are stacked along a third direction Z. Each battery module 200 includes multiple battery cells 2001 arranged along a first direction X. The liquid cooling plate 100 is disposed between two adjacent battery modules 200 in the third direction Z. Because the battery modules 200 are stacked vertically, heat easily accumulates within them. By placing the liquid cooling plate 100 between adjacent battery modules 200, heat can be effectively conducted away from the battery cells and quickly dissipated, thereby maintaining a suitable operating temperature range and avoiding the adverse effects of overheating on battery performance. Good heat dissipation performance helps reduce the internal temperature of the battery, reducing the risk of accelerated chemical reactions and increased side reactions caused by high temperatures, thus improving battery safety and lifespan.

[0056] Please see Figure 4The liquid cooling plate 100 includes at least two liquid cooling sections 1 and a reinforcing section 2.

[0057] At least two liquid cooling sections 1 are arranged at intervals along a first direction X. Because multiple liquid cooling sections 1 are distributed in the same direction and spaced apart, they can distribute the heat load over a wider area, which helps to achieve a more uniform heat dissipation effect. This design is particularly suitable for large equipment or complex thermal management systems.

[0058] The reinforcing part 2 connects to two adjacent liquid cooling parts 1 in the first direction X. The reinforcing part 2 has a reinforcing flow channel 20 for fluid communication between the two adjacent liquid cooling parts 1. Located between the liquid cooling parts 1, the reinforcing part 2 not only supports the flow channel but also helps enhance the mechanical strength and stability of the entire structure. By providing the reinforcing part 2 between two adjacent liquid cooling parts 1, it is particularly suitable for longer liquid cooling plates 100, thus strengthening the overall structural strength of the liquid cooling plate 100 and ensuring its cooling effect on the battery. In some designs, the shape and size of the reinforcing part 2 can be adjusted according to actual needs, allowing the liquid cooling plate 100 to better adapt to the complex structures and space constraints of different devices.

[0059] Please see Figure 5 The liquid cooling plate 100 also includes a first cover plate 11, a second cover plate 12, and a flow channel plate 13. The flow channel plate 13 is disposed between the first cover plate 11 and the second cover plate 12 in the third direction Z, and the three together form a liquid cooling cavity 10 (see Figure 7 Since the flow channel plate 13 is located between the first cover plate 11 and the second cover plate 12, it can guide heat from the battery to the coolant and dissipate heat evenly throughout the liquid cooling cavity 10, thereby improving the efficiency of heat exchange.

[0060] Please see Figure 6 The flow channel plate 13 includes multiple first baffle plates 131, each extending along a first direction X and connected between a first cover plate 11 and a second cover plate 12 in a third direction Z. The multiple first baffle plates 131 are spaced apart in a second direction Y to form multiple first liquid cooling flow channels 101 in the liquid cooling cavity 10. Each first baffle plate 131 has multiple blocking segments spaced apart along the first direction X, with adjacent blocking segments being a first blocking segment 1311 and a second blocking segment 1312. Because the blocking segments (i.e., the first blocking segment 1311 and the second blocking segment 1312) on each first baffle plate 131 are spaced apart in the first direction X, they form multiple independent heat paths, ensuring uniform heat distribution in the flow channel and thus improving heat dissipation efficiency.

[0061] Please see Figure 7The reinforcing section 2 has multiple first reinforcing blocks 21, which are spaced apart in the second direction Y. Each first reinforcing block 21 is connected between the first blocking section 1311 and the second blocking section 1312 in the first direction X. A reinforcing flow channel 20 is provided between two adjacent first reinforcing blocks 21. Each first reinforcing block 21 increases the overall structural rigidity of the flow channel, which helps to resist external impacts and pressures, and also improves the stability of the entire liquid cooling system.

[0062] Please see Figure 8 At least one side of the first reinforcing block 21 protrudes from the sidewall of the first water-insulating plate 131 in the second direction Y, and at least one of the first reinforcing blocks 21 has a first connecting hole 201 extending along the first direction X. Due to the protruding design of the first reinforcing blocks 21, they can provide additional support points between the battery modules 200, thereby enhancing the structural stability and rigidity of the entire liquid cooling system. The installation of fasteners (such as bolts) within the first connecting hole 201 ensures a more secure and reliable connection between the battery modules 200. This mechanical connection method is more durable than other types of connections (such as welding or bonding) and is easier to maintain and adjust.

[0063] Please see Figure 9 The reinforcing section 2 also has a plurality of second reinforcing blocks 22, at least one of which is disposed between two adjacent first reinforcing blocks 21. The second reinforcing blocks 22 located between two adjacent first reinforcing blocks 21 increase the structural rigidity of the entire system. This increased rigidity helps to resist external impacts and pressures, and also improves the stability of the entire liquid cooling system.

[0064] Please see Figure 10 At least one second reinforcing block 22 has a second connecting hole 202 extending through the third direction Z. A fastener (such as a bolt) is installed within the second connecting hole 202 to further enhance the connection strength between the battery modules 200.

[0065] Please see Figure 11 and Figure 12 The second reinforcing block 22 includes a first sub-reinforcing block 221 and a second sub-reinforcing block 222. At least one of the first sub-reinforcing block 221 and the second sub-reinforcing block 222 is disposed within a reinforcing flow channel 20. The first sub-reinforcing block 221 has a third connecting hole 203 extending through the third direction Z. By using sub-reinforcing blocks of different sizes, local reinforcement can be applied to the area of ​​the reinforcing flow channel 20 without affecting the overall flow channel layout, thereby further enhancing the structural strength of the liquid cooling plate 100. The installation of fasteners (such as bolts) within the third connecting hole 203 further enhances the connection strength between the battery modules 200.

[0066] Please see Figure 6 and Figure 7 The liquid cooling plate 100 also includes a plurality of second water baffles 132. The second water baffles 132 extend along the second direction Y and are located at the end of the first water baffle 131 and connected to the corresponding first water baffle 131. The plurality of second water baffles 132 are spaced apart in the first direction X to form a plurality of second liquid cooling channels 102 in the liquid cooling cavity 10. The second liquid cooling channels 102 are in fluid communication with the corresponding first liquid cooling channels 101.

[0067] Please see Figure 6 and Figure 7 The liquid cooling plate 100 is provided with a liquid inlet 4 and a liquid outlet 5, which are abutted together, and the liquid inlet 4, the liquid outlet 5, the first liquid cooling channel 101 and the second liquid cooling channel 102 are in fluid communication with each other.

[0068] Please see Figure 7 The flow channel of the liquid cooling plate 100 is designed to be perpendicular to the length direction of the battery module 200, so that the contact area between each battery and the flow channel is basically the same, which is beneficial to controlling the temperature difference between each battery.

[0069] The inlet 4 and outlet 5 are arranged adjacent to each other and located at the same end. This results in a lower temperature of the flowing medium near the inlet 4 and a higher temperature of the flowing medium near the outlet 5. This design of the flow channel of the liquid cooling plate 100 is a staggered distribution of high and low temperatures, which is beneficial to a more uniform temperature distribution of the entire liquid cooling plate 100.

[0070] The inlet 4 and outlet 5 are connected to each other, which can realize the separation of water and electricity, making it safer and reducing the layout of pipelines, which is conducive to improving the space utilization of the battery pack.

[0071] Please see Figure 8 The liquid cooling plate 100 also includes a plurality of turbulence-inducing fins 3, which are disposed within at least one of the first liquid cooling channel 101 and the second liquid cooling channel 102. The turbulence-inducing fins 3 help increase the contact area between the fluid and the channel wall, thereby improving the efficiency of heat transfer. Therefore, by arranging turbulence-inducing fins 3 in different parts of the liquid cooling plate 100, the flow direction and distribution of the fluid can be affected, thereby optimizing the liquid flow path throughout the channel. This helps improve the uniformity and efficiency of the fluid in the entire system.

[0072] Please see Figure 13 and Figure 14This application also provides another liquid cooling plate 100, which includes most of the technical features described above. The difference is that the first baffle plate 131 has a continuous and uninterrupted structure, and the reinforcing part 2 has a plurality of third reinforcing blocks 23. The third reinforcing blocks 23 are disposed between two adjacent first baffle plates 131 to form a reinforced flow channel 20 within the first liquid cooling flow channel 101. Since the first baffle plate 131 is designed as a continuous and uninterrupted structure, this helps to provide uniform support and rigidity throughout the system. By providing a plurality of third reinforcing blocks 23 between two first baffle plates 131, local reinforcement can be performed within the area of ​​the first liquid cooling flow channel 101 without changing the overall flow channel layout.

[0073] At least one third reinforcing block 23 has a fourth connecting hole 204 extending through it in the third direction Z. A fastener (such as a bolt) is installed within the fourth connecting hole 204 to further enhance the connection strength between the battery modules 200.

[0074] The third reinforcing block 23 includes a third sub-reinforcing block 231 and a fourth sub-reinforcing block 232, both of which are disposed within the first liquid cooling channel 101. Since the third sub-reinforcing block 231 is relatively large, a fourth connecting hole 204 can be provided in it to secure the upper and lower battery modules 200. By using sub-reinforcing blocks of different sizes, local reinforcement can be applied to the channel area without affecting the overall channel layout, further enhancing the structural strength of the liquid cooling plate 100. The installation of fasteners (such as bolts) within the third connecting hole 203 further strengthens the connection between the battery modules 200.

[0075] Please see Figure 1 The battery pack also includes a first separator 300 and a second separator 400. The first separator 300 is located at at least one end of the battery module 200 in the first direction X, and the second separator 400 is located between two adjacent battery cells 2001. The second separator 400 has a first through hole 501 extending in the third direction Z, and the liquid cooling plate 100 has a second through hole 502 communicating with the first through hole 501 at the position corresponding to the reinforcing part 2.

[0076] Please see Figure 1 and Figure 2 Two battery modules 200 are stacked in the third direction Z. Each battery module 200 includes two battery cells along the first direction X. A first separator 300 is provided at each end of each battery module 200. A second separator 400 is provided between the two battery cells and is positioned corresponding to the reinforcing part 2. Alternatively, the second separator 400 can be provided between any two adjacent battery cells 2001 in a battery cell, and the second separator 400 is positioned corresponding to the reinforcing part 2.

[0077] Please see Figure 1 The first through hole 501 only penetrates the second partition 400. Please refer to [link / reference]. Figure 4 and Figure 5 The second through hole 502 penetrates the first cover plate 11, the flow channel plate 13, and the second cover plate 12 of the liquid cooling plate 100, and the position of the second through hole 502 corresponds to that of the reinforcing part 2. It is understood that the first cover plate 11 has a first through hole 601, the second cover plate 12 has a second through hole 602, and the reinforcing block has a connecting hole; for example, the first reinforcing block 21 described above has a first connecting hole 201 (see...). Figure 6 The first through hole 601, the second through hole 602, and the connecting hole are interconnected to form a second through hole 502 that communicates with the first through hole 501. With the fastener passing through the first through hole 501 and the second through hole 502, the fastener can fix the middle of the upper and lower battery modules 200, effectively connecting the battery module 200 and the liquid cooling plate 100 into a rigid whole. This design enhances the stability and rigidity of the structure, helping to resist the effects of mechanical vibration, thermal shock, and other external forces.

[0078] The first partition 300 has a third through hole 503, through which a fastener can be inserted to fix the ends of the upper and lower battery modules 200. It should be noted that the liquid cooling plate 100 may also have a fourth through hole (not shown) communicating with the third through hole 503, to further connect the battery module 200 and the liquid cooling plate 100 into a rigid whole.

[0079] Please see Figure 3 The battery pack also includes a heat-conducting component 500, which is disposed between the liquid cooling plate 100 and the battery module 200. The heat-conducting component 500 provides an efficient heat conduction path to quickly transfer the heat generated by the battery module 200 to the liquid cooling plate 100, which helps to keep the battery temperature within a safe range and prevent overheating.

[0080] It should be noted that, with Figure 2 and Figure 3 For example, consider a battery arrangement structure; wherein, a battery cell 2001 has a first sidewall opposite along a first direction X, a second sidewall opposite along a second direction Y, and a third sidewall opposite along a third direction Z. The first, second, and third sidewalls are connected, and the area of ​​the first sidewall is larger than the area of ​​the third sidewall, and the area of ​​the third sidewall is larger than the area of ​​the second sidewall. The first sidewall is the surface of the battery cell 2001 with the largest area, and the second sidewall is the surface of the battery cell 2001 with the smallest area. Figure 2 and Figure 3The illustrated arrangement effectively utilizes the internal space of the battery pack, allowing for the placement of more battery cells 2001 within the pack. The terminals 2002 are located on the second sidewall. Placing the terminals 2002 on the sidewall with the smallest possible area effectively utilizes the internal space of the battery pack. This design allows the battery cells 2001 to be arranged closely, thus accommodating more battery cells 2001 within a limited space and increasing the energy density of the battery pack. Furthermore, placing the terminals 2002 on the second sidewall facilitates thermoelectric separation, reducing the impact of heat generated by the battery cells 2001 during charging and discharging on the electrode connections. This contributes to improved battery safety and reliability.

[0081] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0082] The liquid cooling plate and battery pack provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the 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 liquid-cooled plate, characterized in that, The liquid cooling plate includes: At least two liquid cooling sections, and the at least two liquid cooling sections are arranged at intervals along a first direction; A reinforcing section is connected between two adjacent liquid cooling sections in the first direction. The reinforcing section has a reinforcing flow channel for fluid communication between the two adjacent liquid cooling sections.

2. The liquid cooling plate according to claim 1, characterized in that, The liquid cooling plate also includes: The first cover plate, the second cover plate, and the flow channel plate are arranged in a third direction between the first cover plate and the second cover plate, and the three cooperate with each other to form a liquid cooling cavity. The flow channel plate includes a plurality of first baffles, each of the first baffles extending along the first direction and connected between the first cover plate and the second cover plate in the third direction. The plurality of first baffles are spaced apart in the second direction to form a plurality of first liquid cooling channels in the liquid cooling cavity. Each of the first baffles has a plurality of blocking sections spaced apart along the first direction, and two adjacent blocking sections are the first blocking section and the second blocking section. The reinforcing part has a plurality of first reinforcing blocks, which are spaced apart in the second direction. Each first reinforcing block is connected between the first blocking section and the second blocking section in the first direction, and the reinforcing flow channel is provided between two adjacent first reinforcing blocks.

3. The liquid cooling plate according to claim 2, characterized in that, The first reinforcing block protrudes from the side wall of the first water-proof plate on at least one side in the second direction, and at least one of the first reinforcing blocks has a first connecting hole that extends through the first direction.

4. The liquid cooling plate according to claim 2, characterized in that, The reinforcing part also has a plurality of second reinforcing blocks, at least one of the second reinforcing blocks being disposed between two adjacent first reinforcing blocks.

5. The liquid cooling plate according to claim 4, characterized in that, At least one of the second reinforcing blocks has a second connecting hole that extends through a third direction.

6. The liquid cooling plate according to claim 4, characterized in that, The second reinforcing block includes a first sub-reinforcing block and a second sub-reinforcing block, wherein the first sub-reinforcing block and / or the second sub-reinforcing block are disposed within a reinforcing flow channel, wherein the first sub-reinforcing block has a third connecting hole extending through a third direction.

7. The liquid cooling plate according to claim 1, characterized in that, The liquid cooling plate includes a first cover plate, a second cover plate, and a flow channel plate. The flow channel plate is disposed between the first cover plate and the second cover plate in a third direction, and the three cooperate with each other to form a liquid cooling cavity. The flow channel plate includes a plurality of first water baffles, each of the first water baffles extending along the first direction and connected between the first cover plate and the second cover plate in the third direction. The plurality of first water baffles are spaced apart in the second direction to divide the liquid cooling cavity into a plurality of first liquid cooling flow channels. The reinforcing part has a plurality of third reinforcing blocks, which are disposed between two adjacent first baffles to form the reinforcing channel within the first liquid cooling channel.

8. The liquid cooling plate according to claim 7, characterized in that, At least one of the third reinforcing blocks has a fourth connecting hole that extends through the third direction.

9. The liquid cooling plate according to claim 2 or 7, characterized in that, The liquid cooling plate also includes: Multiple second baffles extend along the second direction and are located at the end of the first baffle and connected to the corresponding first baffle. The multiple second baffles are spaced apart in the first direction to form multiple second liquid cooling channels in the liquid cooling cavity. The second liquid cooling channels are in fluid communication with the corresponding first liquid cooling channels.

10. The liquid cooling plate according to claim 9, characterized in that, The liquid cooling plate also includes: Multiple turbulence fins are disposed within the first liquid cooling channel and / or the second liquid cooling channel.

11. The liquid cooling plate according to claim 9, characterized in that, The liquid cooling plate is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are abutted together, and the liquid inlet, the liquid outlet, the first liquid cooling channel and the second liquid cooling channel are in fluid communication with each other.

12. A battery pack, characterized in that, The battery pack includes: At least two battery modules, wherein the at least two battery modules are stacked along a third direction, and each battery module includes a plurality of battery cells arranged along the first direction; and The liquid cooling plate according to any one of claims 1 to 11, wherein the liquid cooling plate is disposed in the third direction between two adjacent battery modules.

13. The battery pack according to claim 12, characterized in that, The battery pack also includes: The battery pack further includes a first separator and a second separator. The first separator is located at at least one end of the battery module in the first direction, and the second separator is located between two adjacent battery cells. The second separator has a first through hole extending along the third direction, and the liquid cooling plate has a second through hole communicating with the first through hole at the position corresponding to the reinforcing part.

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