Liquid cooling plate, battery device, and electric device

Abstract

The utility model belongs to battery technical field discloses a kind of liquid cooling plate, battery device and electric device.The liquid cooling plate includes flow channel plate group, liquid inlet end plate and liquid outlet end plate, outlet is located on flow channel plate group or liquid outlet end plate, inlet is located on liquid inlet end plate, multiple independent flow inner cavities are equipped in flow channel plate group and when outlet is located on flow channel plate group, with outlet and flow inner cavity cut-off and the outlet flow channel that is communicated with outlet and the first communication hole that is communicated with outlet flow channel;Liquid inlet cavity is equipped in liquid inlet end plate, and is provided with inlet and multiple shunt structures, and liquid outlet cavity is equipped in liquid outlet end plate, and is provided with multiple confluence structures, when outlet is located on flow channel plate group, second communication hole that is communicated with first communication hole is further provided on liquid outlet end plate.The flow path of cooling liquid is shortened, not only improve cooling efficiency, but also reduce the temperature difference of import and export, so that liquid cooling plate different regions have same cooling effect, ensure the uniformity of cooling.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a liquid cooling plate and battery device. Background Technology

[0002] Conventional liquid cooling plates are mostly made of aluminum alloy profiles, and their structure mainly consists of four parts: a base plate, internal reinforcing ribs, end plugs, and inlet / outlet interfaces. The base plate, as a key component in contact with the battery device, must possess excellent thermal conductivity and flatness to ensure efficient heat transfer. The internal reinforcing ribs not only enhance the structural strength of the liquid cooling plate and prevent deformation due to excessive pressure, but also, through machining, work in conjunction with the end plugs to construct an S-shaped liquid cooling channel. After entering through the inlet interface, the coolant flows continuously along the pre-designed S-shaped channel, making full contact with the channel walls and continuously absorbing heat transferred from the base plate. Finally, carrying the heat, it flows out through the outlet interface, enters the external cooling system for heat dissipation, and then recirculates back into the liquid cooling plate, forming a closed-loop liquid cooling circuit.

[0003] However, the S-shaped flow channels of conventional liquid cooling plates result in a longer coolant flow path, leading to lower cooling efficiency. To address this issue, multiple cooling plates are often connected in parallel. Compared to a single cooling plate with the same cooling area, this method shortens the coolant flow path and effectively improves cooling efficiency.

[0004] Even with multiple cooling plates connected in parallel, each cooling plate still has a multi-channel series structure: the coolant continuously flows and absorbs heat within the channels, and the temperature gradually increases along the flow path, resulting in a lower temperature at the channel inlet and a higher temperature at the outlet, thus creating a large temperature difference. This causes significant temperature differences and uneven cooling in different areas of the module, which not only seriously affects the overall performance and lifespan of the battery device, but also poses a high level of safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a liquid cooling plate, a battery device, and an electrical device that have a shorter flow path, higher cooling efficiency, smaller temperature difference, and more uniform cooling.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, a liquid cooling plate is provided, which includes a flow channel plate assembly, an inlet end plate and an outlet end plate. The liquid cooling plate is also provided with an outlet and an inlet. The outlet is provided on the flow channel plate assembly or the outlet end plate, and the inlet is provided on the inlet end plate.

[0008] The flow channel plate assembly is provided with multiple independent flow cavities and, when the liquid outlet is located in the flow channel plate assembly, a liquid outlet flow channel that is connected to the liquid outlet and separated from the flow cavities, and a first connecting hole that is connected to the liquid outlet flow channel.

[0009] The liquid inlet end plate is connected to one end of the flow channel plate assembly along the first direction. The liquid inlet end plate is provided with a liquid inlet cavity and has a liquid inlet and multiple flow splitting structures communicating with the liquid inlet cavity. The multiple flow splitting structures correspond one-to-one with the flow inner cavity.

[0010] The liquid outlet end plate is connected to the other end of the flow channel plate assembly along the first direction. The liquid outlet end plate is provided with a liquid outlet cavity and has multiple flow-gathering structures that communicate with the liquid outlet cavity. Each of the multiple flow-gathering structures corresponds to the flow cavity. When the liquid outlet is located on the flow channel plate assembly, the liquid outlet end plate is also provided with a second communication hole that communicates with the first communication hole.

[0011] Optionally, the flow channel plate assembly further includes multiple flow dividers, and each of the flow cavities is provided with multiple flow dividers to separate multiple refrigerant flow channels within each flow cavity.

[0012] Optionally, the flow channel plate assembly further includes a partition plate, at least one of the partition plates being disposed within the flow channel plate assembly to separate multiple independent flow cavities within the flow channel plate assembly. The two ends of the partition plate along the first direction respectively abut against the liquid inlet end plate and the liquid outlet end plate. The length of the diverter plate along the first direction is less than the length of the partition plate along the first direction, so that multiple refrigerant channels in the same flow cavity are interconnected.

[0013] Optionally, the flow-dividing structure includes a flow-dividing boss, which is located on the side of the liquid inlet end plate facing the flow channel plate assembly. Multiple flow-dividing bosses correspond one-to-one with the flow inner cavity and are inserted into the corresponding flow inner cavity. Each flow-dividing boss has multiple flow-dividing holes that penetrate the flow-dividing boss and connect the flow inner cavity and the liquid inlet cavity.

[0014] Optionally, the flow-gathering structure includes a flow-gathering boss, which is located on the side of the liquid outlet end plate facing the flow channel plate assembly. Multiple flow-gathering bosses correspond one-to-one with the flow inner cavity and are inserted into the corresponding flow inner cavity. Each flow-gathering boss has multiple flow-gathering holes that penetrate the flow-gathering boss and connect the flow inner cavity and the liquid outlet cavity.

[0015] Optionally, the flow channel plate assembly has first extensions on both sides along the second direction toward the liquid inlet end plate, the second direction being perpendicular to the first direction. The two first extensions form a first insertion groove on the side of the flow channel plate assembly facing the liquid inlet end plate. The liquid inlet end plate includes a first liquid inlet plate body and a second liquid inlet plate body. The liquid inlet cavity is disposed in the first liquid inlet plate body. A plurality of flow diversion structures are spaced apart on the side of the first liquid inlet plate body facing the flow channel plate assembly. The two ends of the second liquid inlet plate body extend beyond the first liquid inlet plate body along the second direction to form a T-shaped liquid inlet end plate. The first liquid inlet plate body is inserted into the first insertion groove, and the second liquid inlet plate body overlaps the end face of the first extension.

[0016] Optionally, the flow channel plate assembly has second extensions on both sides along the second direction toward the liquid outlet end plate, the second direction being perpendicular to the first direction. The two second extensions form a second insertion groove on the side of the flow channel plate assembly facing the liquid outlet end plate. The liquid outlet end plate includes a first liquid outlet plate body and a second liquid outlet plate body. The liquid outlet cavity is disposed in the first liquid outlet plate body. A plurality of the confluence structures are spaced apart on the side of the first liquid outlet plate body facing the flow channel plate assembly. The second connecting hole is disposed on the side of the first liquid outlet plate body facing the first connecting hole. Both ends of the second liquid outlet plate body extend beyond the first liquid outlet plate body along the second direction to form a T-shaped liquid outlet end plate. The first liquid outlet plate body is inserted into the second insertion groove, and the second liquid outlet plate body overlaps the end face of the second extension.

[0017] Optionally, the flow channel plate assembly includes two outer flow channel plates and at least one core flow channel plate. The two outer flow channel plates are spaced apart along a second direction, which is perpendicular to the first direction. All the core flow channel plates are disposed between the two outer flow channel plates. The outer flow channel plates and the core flow channel plates are each provided with the flow cavity. The liquid outlet channel, the liquid outlet, and the first connecting hole are disposed in any one of the two outer flow channel plates.

[0018] On the other hand, a battery device is provided, the battery device including a plurality of individual cells and a liquid cooling plate as described in any of the above claims, wherein the plurality of individual cells abut against the liquid cooling plate, and the liquid cooling plate is used to cool the plurality of individual cells.

[0019] On the other hand, an electrical device is provided, the electrical device including a housing and at least one battery device as described above, the battery device being located within the housing.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a liquid cooling plate. The liquid cooling plate has multiple independent flow chambers, liquid outlet channels separated from the flow chambers, and liquid outlets connected to the liquid outlet channels within the flow channel plate assembly. With the multiple diversion structures of the liquid inlet end plate, the coolant can be introduced into the liquid inlet chamber from the liquid inlet and then quickly diverted into multiple parallel streams of coolant flowing into each flow chamber. Then, through the multiple converging structures of the liquid outlet end plate, the parallel streams of coolant can be simultaneously converged into the liquid outlet chamber after absorbing heat and then discharged through the liquid outlet. This significantly shortens the flow path of the coolant, which not only improves the cooling efficiency but also reduces the temperature difference between the inlet and outlet coolants, so that different areas of the liquid cooling plate have the same cooling effect and ensure the uniformity of cooling.

[0022] This utility model also provides a battery device that, by applying the aforementioned liquid cooling plate, alleviates the temperature differences in different areas of the battery device and achieves a more uniform cooling effect. This not only reduces the performance inconsistency between individual cells and ensures the overall performance and service life of the battery device, but also reduces safety hazards caused by local overheating and improves the reliability of the battery system operation.

[0023] This utility model also provides an electrical device that, by applying the aforementioned battery device, reduces safety hazards caused by local overheating and improves the service life of the electrical device. Attached Figure Description

[0024] Figure 1 This is a structural assembly drawing of the liquid cooling plate provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the outer edge flow channel plate with a liquid outlet in the liquid cooling plate provided by this utility model;

[0026] Figure 3 yes Figure 2 Enlarged view of the structure of section A;

[0027] Figure 4 yes Figure 2 Enlarged view of the structure of section B;

[0028] Figure 5 This is a schematic diagram of the liquid inlet end plate in the liquid cooling plate provided by this utility model;

[0029] Figure 6 yes Figure 5 Enlarged view of the structure of section C;

[0030] Figure 7 This is a schematic diagram of the liquid outlet plate in the liquid cooling plate provided by this utility model;

[0031] Figure 8 yes Figure 7Enlarged view of the structure of part D in the middle.

[0032] In the picture:

[0033] 1. Flow channel plate assembly; 11. Flow cavity; 12. Liquid outlet channel; 13. Liquid outlet; 14. First connecting hole; 15. Diverter plate; 16. Refrigerant channel; 17. Partition plate; 18. Outer edge flow channel plate; 181. First flow channel plate body; 182. Second flow channel plate body; 19. Core flow channel plate;

[0034] 2. Liquid inlet end plate; 21. Liquid inlet cavity; 22. Liquid inlet; 23. Diversion structure; 231. Diversion boss; 232. Diversion hole; 24. First liquid inlet plate; 25. Second liquid inlet plate;

[0035] 3. Liquid outlet end plate; 31. Liquid outlet cavity; 32. Second connecting hole; 33. Manifold structure; 331. Manifold boss; 332. Manifold hole; 34. First liquid outlet plate; 35. Second liquid outlet plate;

[0036] 4. Liquid inlet connector;

[0037] 5. Liquid outlet connector. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly 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 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 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.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] Therefore, in order to shorten the flow path of the coolant, improve cooling efficiency, reduce the temperature difference between the inlet and outlet, and ensure cooling uniformity, this embodiment provides a liquid cooling plate. For ease of description, the length direction of the liquid cooling plate is defined as the first direction, and the width direction is defined as the second direction.

[0043] like Figures 1 to 8 As shown, the liquid cooling plate includes a flow channel plate assembly 1, an inlet end plate 2, and an outlet end plate 3. The liquid cooling plate also has an outlet 13 and an inlet 22. The outlet 13 is located on the flow channel plate assembly 1 or the outlet end plate 3, and the inlet 22 is located on the inlet end plate 2. The flow channel plate assembly 1 has multiple independent flow cavities 11, and when the outlet 13 is located on the flow channel plate assembly 1, an outlet flow channel 12 that communicates with the outlet 13 but is separated from the flow cavities 11, and a first connecting hole 14 that communicates with the outlet flow channel 12. The inlet end plate 2 is connected to one end of the flow channel plate assembly 1 along a first direction, allowing liquid to enter. The end plate 2 is provided with an inlet cavity 21 and an inlet port 22 communicating with the inlet cavity 21 and multiple diversion structures 23. The multiple diversion structures 23 correspond one-to-one with the flow inner cavity 11. The outlet end plate 3 is connected to the other end of the flow channel plate assembly 1 along the first direction. The outlet end plate 3 is provided with an outlet cavity 31 and multiple converging structures 33 communicating with the outlet cavity 31. The multiple converging structures 33 correspond one-to-one with the flow inner cavity 11. When the outlet port 13 is provided on the flow channel plate assembly 1, the outlet end plate 3 is also provided with a second connecting hole 32 communicating with the first connecting hole 14.

[0044] The liquid cooling plate has multiple flow chambers 11, liquid outlet channels 12 separated from the flow chambers 11, and liquid outlets 13 connected to the liquid outlet channels 12. With the multiple diversion structures 23 of the liquid inlet end plate 2, the coolant can be introduced from the liquid inlet 22 into the liquid inlet cavity 21 and then quickly diverted into multiple streams of coolant flowing in parallel to each flow chamber 11. Then, through the multiple converging structures 33 of the liquid outlet end plate 3, the multiple streams of coolant can be simultaneously converged to the liquid outlet cavity 31 after absorbing heat, and then discharged through the liquid outlet 13. This greatly shortens the flow path of the coolant, which not only improves the cooling efficiency, but also reduces the temperature difference between the inlet and outlet coolants, so that different areas of the liquid cooling plate have the same cooling effect and ensure the uniformity of cooling.

[0045] The outlet 13 can be set on the outlet end plate 3 or the flow channel plate group 1 according to different usage scenarios. In this embodiment, the outlet 13 is set on the flow channel plate group 1, and the inlet 22 is set on either side of the inlet end plate 2 along the second direction. The outlet 13 is set on the flow channel plate group 1 along the first direction close to the inlet end plate 2 and along the second direction away from the inlet 22. The outlet flow channel 12, which is located in the flow channel plate group 1 and communicates with the outlet 13, is set on the side away from the inlet 22, depending on the location of the outlet 13. The first connecting hole 14, which communicates with the second connecting hole 32 of the outlet end plate 3, is set on the flow channel plate group 1 along the first direction close to the outlet end plate 3 and on the same side as the outlet 13 along the second direction.

[0046] In other embodiments, the outlet 13 is provided on the outlet end plate 3. In this case, the flow channel plate assembly 1 is provided with multiple independent flow cavities 11. The outlet flow channel 12, which is separated from the flow cavities 11, and the first connecting hole 14, which is connected to the outlet flow channel 12, are eliminated. The second connecting hole 32 is eliminated on the outlet end plate 3. In this case, the outlet 13 provided on the outlet end plate 3 is directly connected to the outlet cavity 31.

[0047] In addition, the liquid cooling plate also includes a liquid inlet connector 4 and a liquid outlet connector 5. The liquid inlet connector 4 is connected to the liquid inlet 22, and the liquid outlet connector 5 is connected to the liquid outlet 13.

[0048] Optionally, such as Figure 3 , Figure 4 As shown, the flow channel plate assembly 1 also includes multiple flow dividers 15. Each flow cavity 11 is provided with multiple flow dividers 15 to divide multiple refrigerant flow channels 16 within each flow cavity 11.

[0049] By setting multiple flow dividers 15 in each flow cavity 11, secondary flow division of the coolant can be achieved. First, the coolant is divided into multiple flow cavities 11 by the flow divider structure 23. Then, the coolant in each flow cavity 11 is divided into multiple flow cavities 11 by the flow dividers 15. This forms a multi-cavity, multi-channel structure, which significantly increases the contact area between the coolant and the flow channel plate assembly 1, improves the cooling effect, and minimizes the temperature difference of the coolant in each coolant channel 16, effectively solving the problems of uneven cooling and excessive temperature difference in conventional liquid cooling plates.

[0050] Optionally, such as Figure 3 , Figure 4 As shown, the flow channel plate assembly 1 also includes a partition plate 17. At least one partition plate 17 is disposed in the flow channel plate assembly 1 to divide multiple independent flow cavities 11 within the flow channel plate assembly 1. The two ends of the partition plate 17 along the first direction abut against the liquid inlet end plate 2 and the liquid outlet end plate 3, respectively. The length of the diverter plate 15 along the first direction is less than the length of the partition plate 17 along the first direction, so that multiple refrigerant flow channels 16 in the same flow cavity 11 are connected to each other.

[0051] By setting the partition plate 17, multiple independent flow cavities 11 are separated within the flow channel plate assembly 1. Due to the positional error when setting multiple flow dividers 15, the cross-sectional areas of each refrigerant flow channel 16 are somewhat different. By making the length of the flow divider 15 along the first direction shorter than that of the partition plate 17, the multiple refrigerant flow channels 16 within the same flow cavity 11 are connected to each other. This retains the advantages of multiple refrigerant flow channels 16 increasing the contact area and shortening the path of a single flow channel, while also allowing the coolant in the same flow cavity 11 to circulate moderately between the refrigerant flow channels 16. The coolant flow rate in local areas can be flexibly adjusted, further alleviating the problem of uneven heat absorption caused by slight differences in the flow channels, and effectively avoiding the situation of excessively high temperature in local refrigerant flow channels 16.

[0052] Optionally, such as Figure 5 , Figure 6 As shown, the flow splitting structure 23 includes a flow splitting boss 231, which is located on the side of the liquid inlet end plate 2 facing the flow channel plate assembly 1. Multiple flow splitting bosses 231 correspond one-to-one with the flow inner cavity 11 and are inserted into the corresponding flow inner cavity 11. Each flow splitting boss 231 has multiple flow splitting holes 232 that penetrate the flow splitting boss 231 and connect the flow inner cavity 11 and the liquid inlet cavity 21.

[0053] By using the flow-dividing protrusions 231 that correspond one-to-one with the flow cavities 11, and inserting the flow-dividing protrusions 231 into the corresponding flow cavities 11, precise docking between the flow-dividing structure 23 and the flow cavities 11 can be achieved. This avoids the coolant bypass or cross-flow problems that may occur in traditional flow-dividing methods, ensuring that the coolant flowing out of the inlet cavity 21 can be completely introduced into the target flow cavities 11, greatly improving the accuracy of flow-dividing. Furthermore, by setting multiple flow-dividing holes 232 on the flow-dividing protrusions 231, on the one hand, the coolant can be dispersed from the inlet cavity 21 into multiple fine streams and introduced into the flow cavities 11, allowing the coolant to fill the entire flow cavities 11 more quickly and evenly. On the other hand, the multi-flow-dividing hole design 232 can reduce the impact pressure when the coolant enters the flow cavities 11, maintaining the stability of the liquid flow. In this embodiment, the multiple flow-dividing holes 232 are evenly arranged on the flow-dividing protrusions 231 in an array.

[0054] Optionally, such as Figure 7 , Figure 8 As shown, the flow-gathering structure 33 includes a flow-gathering boss 331, which is located on the side of the liquid outlet end plate 3 facing the flow channel plate assembly 1. Multiple flow-gathering bosses 331 correspond one-to-one with the flow inner cavity 11 and are inserted into the corresponding flow inner cavity 11. Each flow-gathering boss 331 has multiple flow-gathering holes 332 that pass through the flow-gathering boss 331 and connect the flow inner cavity 11 and the liquid outlet cavity 31.

[0055] By using the flow-collecting protrusions 331 that correspond one-to-one with the flow cavities 11 and inserting them into the corresponding flow cavities 11, precise docking between the flow-collecting structure 33 and the flow cavities 11 can be achieved, avoiding coolant bypass or cross-flow problems. This ensures that the coolant flowing out of each flow cavity 11 can be completely guided into the outlet cavity 31. Furthermore, by setting multiple flow-collecting holes 332 on the flow-collecting protrusions 331, on the one hand, the coolant can be dispersed from the flow cavities 11 into multiple fine streams and guided into the outlet cavity 31, allowing the coolant to fill the entire outlet cavity 31 more quickly and evenly. On the other hand, the multi-flow-collecting hole 332 diversion design can reduce the impact pressure when the coolant enters the outlet cavity 31, maintaining fluid flow stability. In this embodiment, the multiple flow-collecting holes 332 are evenly arranged on the flow-collecting protrusions 331 in an array.

[0056] Optionally, such as Figure 1 , Figure 5As shown, the flow channel plate assembly 1 has first extensions on both sides along the second direction toward the liquid inlet end plate 2. The second direction is perpendicular to the first direction. The two first extensions are used to form a first insertion groove on the side of the flow channel plate assembly 1 toward the liquid inlet end plate 2. The liquid inlet end plate 2 includes a first liquid inlet plate body 24 and a second liquid inlet plate body 25. The liquid inlet cavity 21 is disposed in the first liquid inlet plate body 24. Multiple diversion structures 23 are spaced apart on the side of the first liquid inlet plate body 24 toward the flow channel plate assembly 1. The two ends of the second liquid inlet plate body 25 extend beyond the first liquid inlet plate body 24 along the second direction to form a T-shaped liquid inlet end plate 2. The first liquid inlet plate body 24 is inserted into the first insertion groove, and the second liquid inlet plate body 25 overlaps the end face of the first extension.

[0057] By designing an inlet end plate 2 consisting of a first inlet plate 24 and a second inlet plate 25, and making the two ends of the second inlet plate 25 extend beyond the first inlet plate 24 along the second direction to form a T-shaped inlet end plate 2, not only is a more sufficient support area provided for the connection between the inlet end plate 2 and the flow channel plate assembly 1, but also the tight connection between the inlet end plate 2 and the flow channel plate assembly 1 is achieved through the abutment of the second inlet plate 25 and the first extension. At the same time, the first inlet plate 24 is inserted into the first insertion groove, which can accurately position the installation position of the inlet end plate 2 and avoid misalignment between the flow splitting structure 23 and the flow cavity 11 due to assembly deviation.

[0058] Optionally, such as Figure 1 , Figure 7 As shown, the flow channel plate assembly 1 has second extensions on both sides along the second direction, facing the liquid outlet end plate 3. The second direction is perpendicular to the first direction. The two second extensions are used to form a second insertion groove on the side of the flow channel plate assembly 1 facing the liquid outlet end plate 3. The liquid outlet end plate 3 includes a first liquid outlet plate body 34 and a second liquid outlet plate body 35. The liquid outlet cavity 31 is disposed in the first liquid outlet plate body 34. Multiple confluence structures 33 are spaced apart on the side of the first liquid outlet plate body 34 facing the flow channel plate assembly 1. The second connecting hole 32 is disposed on the side of the first liquid outlet plate body 34 facing the first connecting hole 14. The two ends of the second liquid outlet plate body 35 along the second direction both exceed the first liquid outlet plate body 34 to form a T-shaped liquid outlet end plate 3. The first liquid outlet plate body 34 is inserted into the second insertion groove, and the second liquid outlet plate body 35 overlaps the end face of the second extension.

[0059] By designing an outlet end plate 3 composed of a first outlet plate 34 and a second outlet plate 35, and making the two ends of the second outlet plate 35 extend beyond the first outlet plate 34 along the second direction to form a T-shaped outlet end plate 3, not only is a more sufficient support area provided for the connection between the outlet end plate 3 and the flow channel plate assembly 1, but also the tight connection between the outlet end plate 3 and the flow channel plate assembly 1 is achieved through the abutment of the second outlet plate 35 and the second extension. At the same time, the first outlet plate 34 is inserted into the second insertion groove, which can accurately position the installation position of the outlet end plate 3 and avoid misalignment between the confluence structure 33 and the flow cavity 11 due to assembly deviation.

[0060] Optionally, such as Figure 1 As shown, the flow channel plate group 1 includes two outer flow channel plates 18 and at least one core flow channel plate 19. The two outer flow channel plates 18 are spaced apart along a second direction, which is perpendicular to the first direction. All the core flow channel plates 19 are located between the two outer flow channel plates 18. Both the outer flow channel plates 18 and the core flow channel plates 19 are provided with a flow cavity 11. The liquid outlet channel 12, the liquid outlet 13, and the first connecting hole 14 are located in any one of the two outer flow channel plates 18.

[0061] By designing a flow channel plate assembly 1 consisting of two outer edge flow channel plates 18 and at least one core flow channel plate 19, the flow channel plate assembly 1 forms a modular structure, allowing for the replacement of damaged or clogged outer edge flow channel plates 18 or core flow channel plates 19 at any time without replacing the entire flow channel plate assembly 1, thus reducing maintenance and repair costs. The number of core flow channel plates 19 can be freely set according to requirements, and the outer edge flow channel plates 18 are T-shaped, facilitating the formation of a first insertion groove, a first extension, a second insertion groove, and a second extension on the flow channel plate assembly 1. In this embodiment, a core flow channel plate 19 is disposed between the two outer edge flow channel plates 18.

[0062] Specifically, such as Figures 2 to 4 As shown, the outer edge flow channel plate 18 includes a first flow channel plate body 181 and a second flow channel plate body 182. The flow cavity 11 is disposed in the first flow channel plate body 181. The second flow channel plate body 182 is disposed on the side of the first flow channel plate body 181 away from the inner core flow channel plate 19. Both ends of the second flow channel plate body 182 extend beyond the first flow channel plate body 181 along the first direction to form a T-shaped outer edge flow channel plate 18. The liquid outlet 13 is disposed on the side of either of the two outer edge flow channel plates 18, near the liquid inlet end plate 2. The second flow channel plate body 182 with the liquid outlet 13 is provided with a liquid outlet flow channel 12 and a first connecting hole 14. The first connecting hole 14 is disposed on the side of the second flow channel plate body 182, near the liquid outlet end plate 3.

[0063] By designing an outer edge flow channel plate 18 consisting of a first flow channel plate 181 and a second flow channel plate 182, and extending the second flow channel plate 182 beyond the first flow channel plate 181 at both ends along the first direction to form a T-shaped outer edge flow channel plate 18, a first extension and a second extension are formed on both sides of the outer edge flow channel plate 18 along the first direction, so that the outer edge flow channel plate 18 can be spliced ​​and assembled with the liquid inlet end plate 2 and the liquid outlet end plate 3. Furthermore, the flow cavity 11 is located within the first flow channel plate 181, and the liquid outlet channel 12, the liquid outlet 13, and the first connecting hole 14 are located within the second flow channel plate 182, thereby ensuring that the flow cavity 11 and the liquid outlet channel 12 remain independent.

[0064] Optionally, this embodiment also provides a battery device, which includes multiple individual cells and the aforementioned liquid cooling plate. The multiple individual cells are in contact with the liquid cooling plate, which is used to cool the multiple individual cells. By applying the aforementioned liquid cooling plate, this battery device alleviates temperature differences in different areas of the battery device, achieving a more uniform cooling effect. This not only reduces performance inconsistencies between individual cells, ensuring the overall performance and lifespan of the battery device, but also reduces safety hazards caused by localized overheating and improves the reliability of the battery system operation.

[0065] Optionally, this embodiment also provides an electrical device including a housing and at least one of the aforementioned battery devices, the battery device being located within the housing. By employing the aforementioned battery device, this electrical device reduces safety hazards caused by localized overheating and improves the service life of the electrical device.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A liquid-cooled plate, characterized in that, The liquid cooling plate includes a flow channel plate assembly (1), an inlet end plate (2), and an outlet end plate (3). The liquid cooling plate is also provided with an outlet (13) and an inlet (22). The outlet (13) is located on the flow channel plate assembly (1) or the outlet end plate (3), and the inlet (22) is located on the inlet end plate (2). The flow channel plate assembly (1) is provided with multiple independent flow cavities (11) and, when the liquid outlet (13) is provided in the flow channel plate assembly (1), a liquid outlet flow channel (12) that is connected to the liquid outlet (13) and separated from the flow cavities (11), and a first connecting hole (14) that is connected to the liquid outlet flow channel (12). The liquid inlet end plate (2) is connected to one end of the flow channel plate group (1) along the first direction. The liquid inlet end plate (2) is provided with a liquid inlet cavity (21) and has a liquid inlet (22) communicating with the liquid inlet cavity (21) and multiple flow splitting structures (23). The multiple flow splitting structures (23) correspond one-to-one with the flow inner cavity (11). The liquid outlet end plate (3) is connected to the other end of the flow channel plate group (1) along the first direction. The liquid outlet end plate (3) is provided with a liquid outlet cavity (31) and has multiple flow-converging structures (33) communicating with the liquid outlet cavity (31). The multiple flow-converging structures (33) correspond one-to-one with the flow inner cavity (11). When the liquid outlet (13) is located on the flow channel plate group (1), the liquid outlet end plate (3) is also provided with a second communication hole (32) communicating with the first communication hole (14).

2. The liquid cooling plate according to claim 1, characterized in that, The flow channel plate assembly (1) also includes multiple flow dividers (15), and each flow cavity (11) is provided with multiple flow dividers (15) to divide multiple refrigerant flow channels (16) in each flow cavity (11).

3. The liquid cooling plate according to claim 2, characterized in that, The flow channel plate assembly (1) further includes a partition plate (17), at least one of the partition plates (17) is disposed in the flow channel plate assembly (1) to separate multiple independent flow cavities (11) in the flow channel plate assembly (1). The two ends of the partition plate (17) along the first direction respectively abut against the liquid inlet end plate (2) and the liquid outlet end plate (3). The length of the diverter plate (15) along the first direction is less than the length of the partition plate (17) along the first direction, so that multiple refrigerant flow channels (16) in the same flow cavity (11) are connected to each other.

4. The liquid cooling plate according to claim 1, characterized in that, The diversion structure (23) includes a diversion boss (231), which is located on the side of the liquid inlet end plate (2) facing the flow channel plate group (1). Multiple diversion bosses (231) correspond one-to-one with the flow inner cavity (11) and are inserted into the corresponding flow inner cavity (11). Each diversion boss (231) has multiple diversion holes (232) that penetrate the diversion boss (231) and connect the flow inner cavity (11) and the liquid inlet cavity (21).

5. The liquid cooling plate according to claim 1, characterized in that, The flow-integrating structure (33) includes a flow-integrating boss (331), which is located on the side of the liquid outlet end plate (3) facing the flow channel plate group (1). Multiple flow-integrating bosses (331) correspond one-to-one with the flow inner cavity (11) and are inserted into the corresponding flow inner cavity (11). Each flow-integrating boss (331) has multiple flow-integrating holes (332) that penetrate the flow-integrating boss (331) and connect the flow inner cavity (11) and the liquid outlet cavity (31).

6. The liquid cooling plate according to claim 1, characterized in that, The flow channel plate assembly (1) has a first extension portion on both sides along the second direction facing the liquid inlet end plate (2). The second direction is perpendicular to the first direction. The two first extension portions are used to form a first insertion groove on the side of the flow channel plate assembly (1) facing the liquid inlet end plate (2). The liquid inlet end plate (2) includes a first liquid inlet plate body (24) and a second liquid inlet plate body (25). The liquid inlet cavity (21) is disposed in the first liquid inlet plate body (24). A plurality of the flow diversion structures (23) are spaced apart on the side of the first liquid inlet plate body (24) facing the flow channel plate assembly (1). The two ends of the second liquid inlet plate body (25) along the second direction both exceed the first liquid inlet plate body (24) to form a T-shaped liquid inlet end plate (2). The first liquid inlet plate body (24) is inserted into the first insertion groove. The second liquid inlet plate body (25) overlaps the end face of the first extension portion.

7. The liquid cooling plate according to claim 1, characterized in that, The flow channel plate assembly (1) has second extensions on both sides along the second direction facing the liquid outlet end plate (3). The second direction is perpendicular to the first direction. The two second extensions are used to form a second insertion groove on the side of the flow channel plate assembly (1) facing the liquid outlet end plate (3). The liquid outlet end plate (3) includes a first liquid outlet plate body (34) and a second liquid outlet plate body (35). The liquid outlet cavity (31) is disposed in the first liquid outlet plate body (34). A plurality of the confluence structures (33) are spaced apart. The first liquid outlet plate (34) faces the side of the flow channel plate assembly (1), the second connecting hole (32) is provided on the side of the first liquid outlet plate (34) facing the first connecting hole (14), the two ends of the second liquid outlet plate (35) along the second direction both exceed the first liquid outlet plate (34) to form the T-shaped liquid outlet end plate (3), the first liquid outlet plate (34) is inserted into the second insertion groove, and the second liquid outlet plate (35) overlaps the end face of the second extension.

8. The liquid cooling plate according to claim 1, characterized in that, The flow channel plate group (1) includes two outer flow channel plates (18) and at least one core flow channel plate (19). The two outer flow channel plates (18) are spaced apart along a second direction, which is perpendicular to the first direction. All the core flow channel plates (19) are located between the two outer flow channel plates (18). The outer flow channel plates (18) and the core flow channel plates (19) are each provided with a flow cavity (11). The liquid outlet channel (12), the liquid outlet (13), and the first connecting hole (14) are located in any one of the two outer flow channel plates (18).

9. A battery device, characterized in that, The battery device includes a plurality of individual cells and a liquid cooling plate as described in any one of claims 1-8, wherein the plurality of individual cells abut against the liquid cooling plate, and the liquid cooling plate is used to cool the plurality of individual cells.

10. An electrical appliance, characterized in that, The electrical device includes a housing and at least one battery device as described in claim 9, the battery device being located within the housing.

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