Liquid cooling plate and battery system

Abstract

The utility model discloses a liquid cooling plate and a battery system, the liquid cooling plate comprises a shell, the interior of the shell is hollow, the shell is provided with a liquid inlet and a liquid outlet, and a space formed by the shell is provided with a middle area and an edge area; the first channel and the second channel are communicated with each other and are communicated with the liquid inlet and the liquid outlet, the first channel is arranged in the edge area, and the second channel is arranged in the middle area; and the overflowing area of the second channel is smaller than that of the first channel. According to the liquid cooling plate, the middle area and the edge area are set, and the flowing area of the second channel is smaller than that of the first channel corresponding to the area to be cooled of the battery, so that the flowing speed of cooling liquid in the middle area is larger than that of the edge area, heat of the middle area can be taken away quickly, and the temperature of the middle area is reduced; the cooling efficiency of the middle area is higher than that of the edge area, so that the temperature uniformity in the battery working process is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a liquid cooling plate and battery system. BACKGROUND

[0002] The battery pack adopting the liquid cooling heat dissipation mode is caused by the heat accumulation of the battery itself and the module heat, and the battery temperature at the center position of the module is high, the flow rate and flow of the cooling medium in the cold plate are uneven, which leads to the poor uniformity of the battery temperature in the battery pack, the uneven distribution of the battery temperature in the battery pack in the battery group, the reduction of the battery life, and even the thermal runaway and other problems affecting the normal use of the battery.

[0003] In the battery field, the liquid cooling heat dissipation is one of the mainstream heat dissipation modes, and the working principle is that the cooling medium with strong heat conduction capacity in the cold plate carries away the heat generated by the battery in the flow process through the heat conduction mode to control the temperature in the battery working process. However, in the battery group, due to the heat accumulation of the battery itself and the module heat, the battery temperature at the center position of the module is high, in addition, the flow rate and flow of the cooling medium in the cold plate are uneven, which leads to the poor uniformity of the battery temperature in the battery pack, the reduction of the battery life, and even the thermal runaway and other problems affecting the normal use of the battery. In order to solve the problem of uneven distribution of the battery temperature in the battery pack, some liquid cooling plates have complex structures and poor uniformity. SUMMARY

[0004] The technical problem to be solved by the embodiments of the utility model lies in providing a liquid cooling plate and a battery system, which are simple in structure and convenient for maintaining the uniformity of the temperature in the battery working process.

[0005] In order to solve the above technical problems, the utility model provides a liquid cooling plate, which comprises a shell, an inside hollow, a liquid inlet and a liquid outlet are arranged on the shell, and the space formed by the shell has a middle part area and an edge area; a first channel and a second channel are communicated with each other and the liquid inlet and the liquid outlet, the first channel is arranged in the edge area, and the second channel is arranged in the middle part area; wherein the flow area of the second channel is smaller than the flow area of the first channel.

[0006] In a feasible implementation mode, the liquid cooling plate further comprises a first flow disturbing component, and the first flow disturbing component is arranged at both ends of the liquid cooling plate along the length direction or the width direction.

[0007] In an implementation, the liquid cooling plate comprises a plurality of first partition plates and a plurality of second partition plates, the first partition plates and the second partition plates are arranged alternately to divide the inner part of the shell into the first channel and the second channel, wherein the length direction of the first partition plate is arranged along a first direction, one end of the first partition plate along the first direction abuts against one end of the shell along the first direction, and the length direction of the second partition plate is arranged parallel to the first direction, one end of the second partition plate along the first direction abuts against the other end of the shell along the first direction.

[0008] In an implementation, the thickness of the second partition plate is greater than the thickness of the first partition plate, the second partition plate is arranged in the middle area, and the second partition plate and the adjacent first partition plate form the second channel.

[0009] In an implementation, the second partition plate comprises a first sub-partition plate and a second sub-partition plate, the thickness of the second sub-partition plate is greater than the thickness of the first sub-partition plate, the second sub-partition plate is arranged in the middle area, and the second sub-partition plate and the adjacent first partition plate form the second channel.

[0010] In an implementation, the liquid cooling plate further comprises a second turbulence component, and the second turbulence component is arranged in the second channel.

[0011] In an implementation, the second turbulence component comprises a plurality of first turbulence strips, the length direction of the first turbulence strip is arranged parallel to the flow direction of the cooling liquid in the channel, and the first turbulence strip is discontinuously arranged in the length direction.

[0012] In an implementation, the second turbulence component further comprises a plurality of second turbulence strips, the second turbulence strips are arranged parallel to and staggered with the first turbulence strips, and the second turbulence strips are discontinuously arranged in the length direction.

[0013] In an implementation, the first channel and / or the second channel is provided with a flow distribution plate, the length direction of the flow distribution plate is arranged parallel to the flow direction of the cooling liquid in the channel, and the flow distribution plate is used for distributing the cooling liquid in the channel.

[0014] Correspondingly, the utility model also provides a battery system, including any one of the above-mentioned liquid cooling plate and battery module, wherein the middle area of the battery module corresponds with the middle area of the liquid cooling plate, and the edge area of the battery module corresponds with the edge area of the liquid cooling plate.

[0015] The utility model is implemented, and has the following beneficial effects:

[0016] The liquid cooling plate provided by the embodiment of the present application is provided with a middle area and an edge area, corresponding to the areas of the battery to be cooled, and the flow area of the second channel is smaller than that of the first channel, so that the flow rate of the cooling liquid in the middle area is greater than that in the edge area, the heat in the middle area can be quickly taken away, the temperature of the middle area is reduced, the cooling efficiency of the middle area is higher than that of the edge area, and the uniformity of the temperature of the battery during operation is maintained.

[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application, and do not constitute undue limitations on the present application.

[0019] Figure 1 is a structural schematic diagram of a liquid cooling plate provided by an embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of a liquid cooling plate provided by an embodiment of the present application; Figure 1 is a structural schematic diagram of a liquid cooling plate provided by an embodiment of the present application;

[0021] Figure 3 is a structural schematic diagram of a liquid cooling plate provided by another embodiment of the present application;

[0022] Figure 4 is a structural schematic diagram of a liquid cooling plate provided by another embodiment of the present application;

[0023] Figure 5 is a structural schematic diagram of a liquid cooling plate provided by another embodiment of the present application.

[0024] Reference numerals in the drawings:

[0025] 10 - housing, 11 - liquid inlet, 12 - liquid outlet, 101 - middle area, 102 - edge area,

[0026] 20 - first channel,

[0027] 30 - second channel,

[0028] 40 - first flow disturbance assembly,

[0029] 50 - second flow disturbance assembly, 51 - first flow disturbance strip, 52 - second flow disturbance strip,

[0030] 60 - first isolation plate, 61 - third sub-isolation plate, 62 - fourth sub-isolation plate,

[0031] 70 - second isolation plate, 71 - first sub-isolation plate, 72 - second sub-isolation plate,

[0032] 80 - a flow splitter plate. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application. Therefore, the specific details set forth below are merely exemplary. The present application can be practiced with other alternative embodiments and thus the general principles defined below can be applied to any alternative embodiments as appropriate, without departing from the scope of the present application.

[0034] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like based on the orientation or position relationship shown in the drawings, is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0036] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Reference is made to Figures 1 to 5The embodiment of the present application provides a liquid cooling plate for liquid cooling and heat dissipation of a battery. The liquid cooling plate comprises a shell 10 and a first channel and a second channel formed in the shell 10. The shell 10 is hollow inside and is provided with an inlet 11 and an outlet 12. The shell 10 forms a space with a middle area 101 and an edge area 102. The first channel 20 and the second channel 30 are connected to each other and are connected to the inlet 11 and the outlet 12. The first channel 20 is arranged in the edge area 102, and the second channel 30 is arranged in the middle area 101. The flow area of the second channel is smaller than that of the first channel.

[0039] The liquid cooling plate provided by the embodiment of the present application sets the middle area 101 and the edge area 102, which correspond to the corresponding areas of the battery heat dissipation area. Meanwhile, the flow area of the second channel is smaller than that of the first channel, so that the flow rate of the cooling liquid in the middle area 101 is greater than that in the edge area 102, thereby quickly taking away the heat of the middle area 101, reducing the temperature of the middle area 101, and the cooling efficiency of the middle area 101 is higher than that of the edge area 102, thereby maintaining the uniformity of the temperature of the battery during the working process.

[0040] The middle area 101 is usually located in the center area of the liquid cooling plate, and can also be in the edge area. For example, the battery heat dissipation area can be provided with a plurality of liquid cooling plates, part of the liquid cooling plates is arranged in the center area of the battery, and part of the liquid cooling plates surrounds the center area of the battery, so that the edge area of the liquid cooling plate can be the middle area 101. The present application does not limit the specific position of the middle area 101.

[0041] In a feasible implementation manner, the diameter of the second channel 30 of the middle area 101 is smaller than that of the first channel 20 of the edge area 102. In this way, the flow area of the second channel is smaller than that of the first channel, so that the flow rate of the cooling liquid in the middle area 101 is greater than that in the edge area 102, thereby quickly taking away the heat of the middle area 101, reducing the temperature of the middle area 101, and the cooling efficiency of the middle area 101 is higher than that of the edge area 102, thereby maintaining the uniformity of the temperature of the battery during the working process.

[0042] In one possible implementation, the liquid cooling plate further comprises a first turbulence component 40 arranged at the two ends of the liquid cooling plate. The two ends of the liquid cooling plate can be the two ends in the length direction of the liquid cooling plate, or the two ends in the width direction of the liquid cooling plate, or the two ends according to the flow direction of the cooling liquid in the channel. The two ends can also be the two ends of the first channel 20 and the second channel 30. The first turbulence component 40 can be arranged at the connection between the first channel 20 and the second channel 30. By arranging the first turbulence component 40 at the connection between the first channel 20 and the second channel 30, the cooling liquid flowing from the edge area 102 to the middle area 101 or flowing from the middle area 101 to the edge area 102 can be disturbed, so that the heat and flow of the cooling liquid are homogenized, thereby further reducing the temperature difference and maintaining the uniformity of the temperature during the operation of the battery. Further, the connection between the first channel 20 and the second channel 30 is in a U shape, which can also be said to be the position where the flow direction of the cooling liquid is changed, and the first turbulence component 40 is a plurality of turbulence columns. When the cooling liquid flows through the first channel 20 and the second channel 30, the smooth laminar flow may not effectively transfer heat from the solid surface to the liquid. The turbulence column can break this laminar state and promote the formation of turbulent flow, increasing the energy exchange inside the liquid, thereby more efficiently taking away heat. Due to the presence of the turbulence column, the cooling liquid is forced to change the flow direction, which makes the contact between the liquid and the cold plate wall more sufficient and frequent, and actually increases the effective heat exchange area. When the cooling liquid flows through the turbulence column, it can better mix the liquid in different temperature areas, which helps to achieve more uniform temperature distribution in the entire battery module and reduces the possibility of hot spots. The first turbulence component 40 is too large to introduce additional pressure loss, but the structure of the turbulence column controls this loss, reducing additional pressure loss while ensuring sufficient turbulence intensity. In some special cases, such as cooling liquid containing small particles or impurities, increasing appropriate turbulence at the U-shaped flow path, corner or turning direction can also help to prevent these substances from depositing at the narrow part of the channel, keeping the channel unobstructed. In one possible implementation, the first turbulence component 40 can also be arranged in the second channel 30 and / or the first channel 20, so that the flow of the cooling liquid in the channel is further homogenized, thereby maintaining the uniformity of the cooling liquid temperature and improving the cooling efficiency.

[0043] In one feasible implementation, the liquid cooling plate includes a plurality of first isolation plates 60 and a plurality of second isolation plates 70. The first isolation plates 60 and second isolation plates 70 are alternately arranged to divide the interior of the housing 10 into first channels and second channels. The length direction of the first isolation plate 60 is arranged along a first direction, and one end of the first isolation plate 60 along the first direction abuts against one end of the housing 10 along the first direction. The length direction of the second isolation plate 70 is parallel to the first direction, and one end of the second isolation plate 70 along the first direction abuts against the other end of the housing 10 along the first direction. Thus, the first isolation plates 60 and second isolation plates 70 divide the space inside the housing 10 into channels, allowing the interior of the housing 10 to be filled with coolant and enabling coolant to flow through every part of the interior of the housing 10, thereby allowing better heat dissipation for the parts to be cooled that are in contact with the liquid cooling plate. Furthermore, the cross-section of the housing 10 assembly is rectangular, and the length directions of the first isolation plates 60 and second isolation plates 70 can also be parallel to the length direction of the housing 10. In this way, if the first channel 20 and the second channel 30 of the same diameter are to be separated, fewer first isolation plates 60 and second isolation plates 70 are needed, and the structure is simpler.

[0044] Furthermore, the liquid cooling plate can be configured with only the first flow-dispersing component 40, or only the first isolation plate 60 and the second isolation plate 70, depending on the requirements. Alternatively, it can be configured with both the first flow-dispersing component 40, the first isolation plate 60, and the second isolation plate 70. The liquid cooling plate can achieve the beneficial effects of the corresponding structures described above based on its appropriate structure, which will not be elaborated further here.

[0045] In one feasible implementation, when the cross-section of the housing 10 assembly is also rectangular, the length direction of the first partition plate 60 and the second partition plate 70 can also be parallel to the width direction of the housing 10, which will not be elaborated here. It should be noted that this application does not limit the shape of the housing 10; the structure of the housing 10 can be rectangular, rhomboid, or other polygonal structures.

[0046] like Figure 1 As shown, the outlet 12 and inlet 11 are arranged on the same side along both the thickness and length directions of the liquid cooling plate. In a feasible implementation, the outlet 12 and inlet 11 can also be arranged on both sides of the liquid cooling plate along the thickness direction, as needed. For example, when the thickness direction of the liquid cooling plate is vertical, the inlet 11 can be located on the upper surface of the liquid cooling plate, while the outlet 12 can be located on the lower surface of the liquid cooling plate, which facilitates the loading and unloading of coolant. In a feasible implementation, such as... Figure 5As shown, the liquid outlet 12 and the liquid inlet 11 can also be diagonally arranged at both ends of the length direction of the liquid cooling plate. Such liquid inlet and liquid outlet arranged on the upper surface or lower surface of the liquid cooling plate can be set according to the number of the first partition plate and the second partition plate forming the first channel and the second channel.

[0047] In a feasible implementation, as shown in Figure 1 and Figure 2 As shown, the liquid cooling plate is provided with only one second partition plate 70, the thickness of the second partition plate 70 is greater than the thickness of the first partition plate 60, and the second partition plate 70 is arranged in the middle area 101. The second partition plate 70 and the adjacent first partition plate 60 form the second channel 30. In this way, the diameter of the second channel 30 between the second partition plate 70 and the adjacent first partition plate 60 is smaller than the first channel 20 formed between the first partition plate 60 and the edge of the shell 10.

[0048] In a feasible implementation, as shown in Figure 4 As shown, the second partition plate includes a first sub-partition plate 71 and a second sub-partition plate 72, the thickness of the second sub-partition plate 72 is greater than the thickness of the first sub-partition plate 71, the second sub-partition plate 72 is arranged in the middle area 101, and the second sub-partition plate 72 and the adjacent first partition plate 60 form the second channel 30. In this way, the diameter of the second channel 30 formed between the second sub-partition plate 72 and the adjacent first partition plate 60 is smaller than the diameter of the first channel 20 formed between the first partition plate 60 and the edge of the shell 10 or between the first partition plate 60 and the first sub-partition plate 71.

[0049] In a feasible implementation, as shown in Figure 5 As shown, the first partition plate 60 can also be similar to the second partition plate 70, including a third sub-partition plate 61 and a fourth sub-partition plate 62, the thickness of the fourth sub-partition plate 62 is greater than the thickness of the third sub-partition plate 61. The fourth sub-partition plate 62 and the second sub-partition plate 72 are arranged in the middle area 101. In summary, as long as the diameter of the second channel 30 is smaller than the diameter of the first channel 20, this will not be described here.

[0050] In a feasible implementation, the liquid cooling plate further comprises a second turbulence component 50. The second turbulence component 50 is arranged in the second channel 30. By arranging the second turbulence component 50 in the second channel 30, the laminar flow state in the second channel can be broken, and a turbulent flow can be formed to increase the energy exchange inside the liquid, thereby more efficiently taking away heat. Due to the presence of the second turbulence component 50, the cooling liquid is forced to change the flow direction, which makes the contact between the liquid and the wall of the cooling plate more sufficient and frequent, and actually increases the effective heat exchange area. When the cooling liquid flows through the turbulence column, it can better mix the liquid in different temperature regions, which helps to achieve a more uniform temperature distribution in the entire battery module and reduces the possibility of hot spots.

[0051] In a feasible implementation, the second turbulence component 50 comprises a plurality of first turbulence bars 51, the length direction of the first turbulence bars 51 is parallel to the first direction, and the first turbulence bars are discontinuously arranged in the length direction. The first turbulence bars 51 are arranged in the second channel 30. It can also be said that the length direction of the first turbulence bars 51 is parallel to the flow direction of the cooling liquid in the channel. The discontinuously arranged first turbulence bars 51 can introduce local disturbances in the flow path of the cooling liquid, and promote the transition from laminar flow to turbulent flow. This transition can increase the heat exchange efficiency between the liquid and the wall of the cooling plate, thereby more effectively taking away heat from the battery. By reasonably arranging the positions and spacings of the first turbulence bars 51, the distribution of the cooling liquid in the entire channel can be more uniform. In this way, overheating in some areas can be avoided, and good cooling effect can be ensured for all areas of all batteries, thereby improving the working stability and consistency of the entire battery system. Compared with a continuously arranged turbulence structure, the discontinuous design can reduce the resistance to the flow of the cooling liquid while maintaining good turbulent flow effect, thereby reducing the overall pressure loss of the system. This helps to save the energy required for pumping and improves the energy efficiency of the system. The non-continuous turbulence bar layout can be flexibly adjusted according to specific thermal management needs. For example, in places where enhanced cooling is needed, the number of turbulence bars can be appropriately increased or their shapes can be changed, while in areas where special attention is not needed, the number of turbulence bars can be reduced, so as to balance the cooling performance and manufacturing cost.

[0052] In one possible implementation, the second turbulence component 50 further comprises a plurality of second turbulence bars 52, which are parallel to and staggered with the first turbulence bars 51, and are discontinuous in the length direction. In this way, by arranging two or more rows of turbulence bars, the flow of the coolant in the channel can be further homogenized, thereby reducing the temperature of the middle region 101 or the center region of the battery pack and maintaining the temperature uniformity during the operation of the battery.

[0053] In one possible implementation, the first channel 20 and / or the second channel 30 further comprises a flow divider 80. The flow divider 80 is parallel to the flow direction of the coolant in the length direction, i.e., arranged in the first direction, for dividing the flow of the coolant in the channel. The flow divider 80 can divide the flow of the coolant in the channel, increase the flow rate, and play a certain guiding role.

[0054] In one possible implementation, the liquid cooling plate further comprises a shell assembly, which is wrapped around the shell 10 assembly to facilitate the assembly, transportation, etc. of the liquid cooling plate. The shell assembly is not the focus of the present application, and thus will not be described here.

[0055] Correspondingly, the present application also provides a battery system, which comprises the liquid cooling plate described above and a battery module, wherein the middle region of the battery module is arranged corresponding to the middle region of the liquid cooling plate, and the edge region of the battery module is arranged corresponding to the edge region of the liquid cooling plate. The battery system provided by the present application has all the advantages of the liquid cooling plate described above, because the liquid cooling plate described above is used. The temperature distribution of the battery in the battery pack is uniform, the temperature of the battery cell is stable, and the service life of the battery cell is increased.

[0056] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present application.

[0057] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A liquid-cooled plate, characterized in that, The liquid cooling plate comprises: a housing, which is hollow inside, and has an inlet and an outlet, and a space formed by the housing has a middle region and an edge region; a first channel and a second channel, which are in communication with each other and the inlet and the outlet, the first channel is arranged in the edge region, and the second channel is arranged in the middle region; wherein the flow area of the second channel is smaller than that of the first channel.

2. The liquid cold plate of claim 1, wherein, The liquid cooling plate further comprises a first turbulence component arranged at the two ends of the liquid cooling plate along the length direction or the width direction.

3. The liquid cold plate of claim 1 or 2, wherein, The liquid cooling plate comprises a plurality of first isolation plates and a plurality of second isolation plates, the first isolation plates and the second isolation plates are arranged alternately to divide the inside of the housing into the first channel and the second channel, wherein the length direction of the first isolation plate is arranged along a first direction, and one end of the first isolation plate along the first direction abuts against one end of the housing along the first direction, the length direction of the second isolation plate is parallel to the first direction, and one end of the second isolation plate along the first direction abuts against the other end of the housing along the first direction.

4. The liquid cold plate of claim 3, wherein, The thickness of the second isolation plate is greater than that of the first isolation plate, the second isolation plate is arranged in the middle region, and the second isolation plate and the adjacent first isolation plate form the second channel.

5. The liquid cold plate of claim 3, wherein, The second isolation plate comprises a first sub-isolation plate and a second sub-isolation plate, the thickness of the second sub-isolation plate is greater than that of the first sub-isolation plate, the second sub-isolation plate is arranged in the middle region, and the second sub-isolation plate and the adjacent first isolation plate form the second channel.

6. The liquid cold plate of claim 1, wherein, The liquid cooling plate further comprises a second turbulence component arranged in the second channel.

7. The liquid cold plate of claim 6, wherein, The second turbulence component comprises a plurality of first turbulence strips, the length direction of the first turbulence strip is parallel to the flow direction of the cooling liquid in the channel, and the first turbulence strip is discontinuously arranged in the length direction.

8. The liquid cold plate of claim 7, wherein, The second turbulence component further comprises a plurality of second turbulence strips, the second turbulence strips are arranged in parallel and staggered with the first turbulence strips, and the second turbulence strips are discontinuously arranged in the length direction.

9. The liquid cold plate of claim 1, wherein, A flow distribution plate is arranged in the first channel and / or the second channel, the length direction of the flow distribution plate is parallel to the flow direction of the cooling liquid in the channel, and the flow distribution plate is used to distribute the cooling liquid in the channel.

10. A battery system characterized by, The battery module comprises the liquid cooling plate and the battery module, wherein the middle region of the battery module is arranged corresponding to the middle region of the liquid cooling plate, and the edge region of the battery module is arranged corresponding to the edge region of the liquid cooling plate.

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