Liquid cooling plate, energy storage device and electric equipment

Abstract

According to the liquid cooling plate, the energy storage device and the electric equipment, the cooling effect of the liquid cooling plate in the energy storage device is improved, the energy consumption of the energy storage device is reduced, and the product competitiveness is improved. The liquid cooling plate comprises an upper plate body, a lower plate body, a partition plate and a plurality of runner plates, the upper plate body comprises a second side face, and the lower plate body is located on one side of the upper plate body in the thickness direction of the upper plate body and is spaced from the upper plate body; the partition plate is fixedly connected between the upper plate body and the lower plate body and divides the liquid cooling plate into a liquid outlet area and a liquid inlet area, the flow channel plates are arranged at intervals, each flow channel plate comprises a first end face and a second end face, the flow channel plates comprise a plurality of first flow channel plates, a plurality of second flow channel plates and a plurality of third flow channel plates, the first runner plates and the second runner plates are alternately arranged and located in the liquid inlet area, the distance between the second end faces and the second side faces of the second runner plates is larger than that between the second end faces and the second side faces of the first runner plates, and the third runner plates are located in the liquid outlet area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat dissipation, in particular to a liquid cooling plate, an energy storage device and an electric equipment. BACKGROUND

[0002] With the increasingly wide application of energy storage devices, the production environment of energy storage products is becoming increasingly fierce. The energy consumption problem in the application process of energy storage devices has gradually become the focus of public attention. At present, a liquid cooling plate is often arranged in the energy storage device to dissipate heat. However, the flow resistance of the heat exchange medium in the existing liquid cooling plate is large, the heat dissipation efficiency of the liquid cooling plate is poor, and the energy consumption of the energy storage device is increased. CONTENT OF THE INVENTION

[0003] The present application provides a liquid cooling plate, an energy storage device and an electric equipment, which improves the cooling effect of the liquid cooling plate inside the energy storage device, reduces the energy consumption of the energy storage device, reduces the production cost, and improves the product competitiveness of the energy storage device.

[0004] The present application provides a liquid cooling plate, comprising an upper plate body, a lower plate body, a partition plate and a plurality of flow channel plates, the upper plate body comprises a first side and a second side, the first side and the second side are arranged opposite to each other along a first direction, the upper plate body is provided with a liquid outlet and a liquid inlet, the liquid outlet and the liquid inlet penetrate through the upper plate body along a second direction, and are arranged apart from each other along a third direction, wherein the distance between the liquid inlet and the first side is less than the distance between the liquid inlet and the second side; wherein the first direction, the second direction and the third direction are arranged intersecting with each other in pairs;

[0005] The lower plate body is located on one side of the upper plate body and is arranged apart from the upper plate body along the second direction;

[0006] The partition plate is fixedly connected between the upper plate body and the lower plate body, and divides the liquid cooling plate into a liquid outlet area and a liquid inlet area, the liquid outlet area and the liquid inlet area are arranged in sequence along the third direction, and are isolated from each other at one end close to the first side, and are communicated at one end close to the second side, wherein the liquid outlet is located in the liquid outlet area, and the liquid inlet is located in the liquid inlet area;

[0007] A plurality of the flow channel plates are fixedly connected between the upper plate body and the lower plate body and are arranged in sequence with intervals, and each adjacent two of the plurality of flow channel plates form a flow channel, each adjacent two of the flow channels are in communication with each other at one end close to the first side face and are in communication with each other at one end close to the second side face, the flow channel located in the liquid inlet area is in communication with the liquid inlet, and the flow channel located in the liquid outlet area is in communication with the liquid outlet, wherein each of the flow channel plates comprises a first end face and a second end face arranged oppositely, the first end face faces the first side face and is arranged at intervals with the first side face, the liquid outlet and the liquid inlet, and the second end face is located between the first end face and the second side face and is arranged at intervals with the second side face.

[0008] The plurality of flow channel plates comprise a plurality of first flow channel plates, a plurality of second flow channel plates and a plurality of third flow channel plates, the plurality of first flow channel plates and the plurality of second flow channel plates are located in the liquid inlet area and are arranged alternately, the distance between the second end face of the second flow channel plate and the second side face is greater than the distance between the second end face of the first flow channel plate and the second side face, and the plurality of third flow channel plates are located in the liquid outlet area.

[0009] The upper plate body further comprises a third side face and a fourth side face, the third side face and the fourth side face are connected between the first side face and the second side face and are arranged oppositely along the third direction, the distance between the third side face and the liquid inlet is greater than the distance between the fourth side face and the liquid inlet, and the distance between the second end face of the plurality of first flow channel plates and the second side face gradually increases in the direction from the fourth side face to the third side face.

[0010] The plurality of third flow channel plates comprise a fourth flow channel plate and a plurality of fifth flow channel plates, and the plurality of fifth flow channel plates are located on the side of the fourth flow channel plate facing the partition plate.

[0011] The distance between the second end face of the plurality of fifth flow channel plates and the second side face gradually increases in the direction from the fourth flow channel plate to the fifth flow channel plate.

[0012] The first end face of the fourth flow channel plate is flush with the first end face of the plurality of fifth flow channel plates, and the distance between the second end face of the fourth flow channel plate and the second side face is less than the distance between any of the fifth flow channel plates and the second side face.

[0013] The fourth flow channel plate has a plurality of fourth flow channel plates, and the distance between the second end face of the plurality of fourth flow channel plates and the second side face is equal.

[0014] The upper plate body comprises a first upper plate body and a second upper plate body, and the first upper plate body and the second upper plate body are arranged in sequence along the third direction and are fixedly connected to each other.

[0015] The lower plate body comprises a first lower plate body and a second lower plate body, and the first lower plate body and the second lower plate body are arranged in sequence along the third direction and are fixedly connected to each other.

[0016] The partition plate comprises a first sub-partition plate and a second sub-partition plate, and the first sub-partition plate and the second sub-partition plate are arranged in sequence along the third direction and are fixedly connected to each other, the first sub-partition plate is fixedly connected between the second upper plate body and the second lower plate body, and the second sub-partition plate is fixedly connected between the first upper plate body and the first lower plate body.

[0017] The first flow channel plate and the second flow channel plate are fixedly connected between the first upper plate body and the first lower plate body, and the third flow channel plate is fixedly connected between the second upper plate body and the second lower plate body.

[0018] The first upper plate body, the first lower plate body, the first flow channel plate, the second flow channel plate, and the second sub-partition plate are integrally formed, and / or the second upper plate body, the second lower plate body, the third flow channel plate, and the first sub-partition plate are integrally formed.

[0019] Each flow channel plate comprises two flow channel wall surfaces, and the two flow channel wall surfaces are arranged opposite to each other along the third direction and face the flow channels on the two sides of the flow channel plate, at least one flow channel wall surface is provided with a first protrusion and is spaced apart from the adjacent flow channel plate.

[0020] The first protrusion has a plurality of first protrusions, and the plurality of first protrusions are spaced apart.

[0021] The upper plate body comprises a first surface facing the flow channel, the first surface is provided with a second protrusion, the second protrusion protrudes from the first surface to the direction of the flow channel, and is spaced apart from the lower plate body.

[0022] The second protrusion has a plurality of second protrusions, and the plurality of second protrusions are spaced apart and spaced apart from the flow channel plate.

[0023] The liquid cooling plate further comprises a first side plate and a second side plate, and the first side plate and the second side plate are located at opposite ends of the upper plate body and the lower plate body along the third direction and are fixedly connected between the upper plate body and the lower plate body, and the first side plate and the second side plate are used to limit the movement of the energy storage module along the third direction.

[0024] The liquid cooling plate further comprises a first limiting plate and a second limiting plate, both of which are located on the side of the upper plate body away from the lower plate body, and are arranged at intervals along the first direction, and are used to limit the movement of the energy storage module along the first direction.

[0025] The liquid cooling plate comprises a liquid cooling main plate, a first end plate and a second end plate, the liquid cooling main plate comprises the upper plate body, the lower plate body and a plurality of flow channel plates, the first end plate and the second end plate are respectively installed at opposite ends of the liquid cooling main plate along the first direction, and the flow channels are closed.

[0026] The distance between the second end surface of each of the plurality of second flow channel plates and the second side surface is equal.

[0027] The application further provides an energy storage device comprising the liquid cooling plate and an energy storage module, the energy storage module is installed on the surface of the upper plate body away from the lower plate body.

[0028] The energy storage device further comprises a cover body, which is installed on the liquid cooling plate and covers the energy storage module.

[0029] The application further provides a power consumption equipment comprising the energy storage device, and the energy storage device is used to supply power to the power consumption equipment.

[0030] The liquid cooling plate can effectively distribute the heat exchange medium, ensure that the heat exchange medium in the liquid cooling main plate reduces the flow resistance under sufficient heat exchange, and mix the heat exchange medium uniformly to reduce the temperature gradient of the heat exchange medium itself, thereby improving the heat dissipation performance of the energy storage device, reducing the flow resistance by more than 70% during operation, and reducing the energy consumption of the energy storage device. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings required by the embodiments of the application will be described below.

[0032] Figure 1 is a schematic structural diagram of an energy storage device provided by the embodiments of the application;

[0033] Figure 2 is Figure 1 is a schematic diagram of the internal structure of the energy storage device shown in FIG. 1;

[0034] Figure 3 is Figure 2 is a schematic diagram of the liquid cooling plate in the energy storage device shown in FIG. 1;

[0035] Figure 4 yes Figure 3 The exploded structural diagram of the liquid cooling plate is shown.

[0036] Figure 5 yes Figure 4 The diagram shows the structure of the liquid-cooled mainboard in the liquid-cooled plate.

[0037] Figure 6 yes Figure 5 The diagram shows the structure of the liquid-cooled motherboard after it has been cut open along line AA.

[0038] Figure 7 yes Figure 5 The diagram shows the structure of the liquid-cooled motherboard from another angle.

[0039] Figure 8 yes Figure 5 The diagram shows a cross-sectional structure of the liquid-cooled motherboard after it has been cut along the BB line.

[0040] Figure 9 yes Figure 6 A schematic diagram of the structure of region C in the liquid-cooled motherboard under the first embodiment;

[0041] Figure 10 yes Figure 6 The diagram shows the structure of region C in the liquid-cooled motherboard under the second implementation method.

[0042] Labels: energy storage device 1000, liquid cooling plate 2000, energy storage module 3000, cover 4000, liquid cooling main plate 100, first end plate 200, second end plate 300, first limiting plate 400, second limiting plate 500, liquid inlet pipe 600, liquid outlet pipe 700, first direction X, second direction Y, third direction Z, upper plate body 10, lower plate body 20, partition plate 70, first sub-partition plate 71, second sub-partition plate 72, flow channel plate 30, first side plate 40, second side plate 50, second surface 11, first surface 12, first circumferential side surface 13, first side surface 13a, second side surface 13b, third side surface 13c, fourth side surface 13d, liquid outlet 14, liquid inlet 15, second upper plate body 10a, first upper plate body 10b, first connecting surface 1, second connecting surface 2, third surface 21, fourth surface 22, second circumferential side surface 23, fifth side surface 23a, sixth side surface 23b, seventh side surface 23c, eighth side surface 23d, second lower plate body 20a, first lower plate body 20b, third connecting surface 3, fourth connecting surface 4, liquid outlet area a, liquid inlet area b, first wall surface 35, fifth connecting surface 5, second wall surface 36, sixth connecting surface 6, first end surface 30a, second end surface 30b, flow channel wall surface c, flow channel 60, first protrusion 37, second protrusion 38, third flow channel plate d, fourth flow channel plate 33, fifth flow channel plate 34, first flow channel plate 31, second flow channel plate 32, first liquid cooling sub-plate 110, second liquid cooling sub-plate 120. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of an energy storage device 1000 provided by the embodiments of the present application, Figure 2 is Figure 1 a schematic diagram of the internal structure of the energy storage device 1000 shown in FIG. 1. Among them, Figure 2 The cover 4000 of the energy storage device 1000 is not shown.

[0044] The application provides an energy storage device 1000, which can include but is not limited to a battery module, a battery pack or a battery system and other products with energy storage functions. The actual application form of the energy storage device provided by the embodiments of the application can be but is not limited to the listed products, and can also be other application forms. The embodiments of the application do not strictly limit the application form of the energy storage device 1000. The embodiments of the application take the battery pack as an example for description. The battery cell in the following text can be a single battery / cuboid battery.

[0045] The energy storage device 1000 includes a liquid cooling plate 2000, a plurality of energy storage modules 3000 and a cover 4000. The plurality of energy storage modules 3000 and the cover 4000 are both mounted on the liquid cooling plate 2000. The plurality of energy storage modules 3000 can be arranged in an array. The cover 4000 covers the plurality of energy storage modules 3000 and protects the energy storage modules 3000. The cover 4000 can be made of aluminum, for example, the cover 4000 can be an aluminum cover.

[0046] Please refer to Figure 3 and Figure 4 , Figure 3 is Figure 2 the structure diagram of the liquid cooling plate 2000 in the energy storage device 1000 shown in FIG. 1, Figure 4 is Figure 3 the exploded structure diagram of the liquid cooling plate 2000 shown in FIG. 2.

[0047] The liquid cooling plate 2000 includes a liquid cooling main plate 100, a first end plate 200, a second end plate 300, a first limiting plate 400, a second limiting plate 500, a liquid inlet pipe 600 and a liquid outlet pipe 700. The first end plate 200, the second end plate 300, the first limiting plate 400, the second limiting plate 500, the liquid inlet pipe 600 and the liquid outlet pipe 700 are all mounted on the liquid cooling main plate 100. Along the first direction X, the first end plate 200 and the second end plate 300 are respectively located at opposite ends of the liquid cooling main plate 100 to enclose the liquid cooling main plate 100. Along the second direction Y, the first limiting plate 400, the second limiting plate 500, the liquid inlet pipe 600 and the liquid outlet pipe 700 are all located on the same side of the liquid cooling main plate 100. Along the first direction X, the first limiting plate 400 and the second limiting plate 500 are located between the first end plate 200 and the second end plate 300 and are both spaced apart from the first end plate 200 and the second end plate 300. The first limiting plate 400 is close to the first end plate 200, and the second limiting plate 500 is close to the second end plate 300. The liquid inlet pipe 600 and the liquid outlet pipe 700 are located between the first limiting plate 400 and the first end plate 200 and are both spaced apart from the first limiting plate 400 and the first end plate 200. Along the third direction Z, the liquid inlet pipe 600 and the liquid outlet pipe 700 are spaced apart. The liquid inlet pipe 600 communicates with the liquid inlet of the liquid cooling main plate 100, and the liquid outlet pipe 700 communicates with the liquid outlet of the liquid cooling main plate 100.

[0048] In the embodiment, the first direction X, the second direction Y and the third direction Z are perpendicular to each other. It can be understood that the first direction X refers to the length direction of the liquid cooling main board 100, the second direction Y refers to the thickness direction of the liquid cooling main board, and the third direction Z refers to the width direction of the liquid cooling main board 100.

[0049] Please refer to Figure 5 and Figure 6 , Figure 5 is Figure 4 the structure diagram of the liquid cooling main board 100 in the liquid cooling plate 2000 shown in FIG. 2, Figure 6 is Figure 5 the cross-sectional structure diagram of the liquid cooling main board 100 along A-A shown in FIG. 3.

[0050] The liquid cooling main board 100 comprises an upper plate body 10, a lower plate body 20, a partition plate 70, a plurality of flow channel plates 30, a first side plate 40 and a second side plate 50. In the second direction Y, the upper plate body 10 and the lower plate body 20 are parallel and spaced apart. The partition plate 70 and the flow channel plate 30 are located between the upper plate body 10 and the lower plate body 20, and are connected between the upper plate body 10 and the lower plate body 20, and are spaced apart from each other. In the first direction X, the partition plate 70 and the flow channel plate 30 are located between the first end plate 200 and the second end plate 300, and are spaced apart from the second end plate 300. In the third direction Z, the first side plate 40 and the second side plate 50 are located at opposite ends of the upper plate body 10 and the lower plate body 20, respectively, and are connected between the upper plate body 10 and the lower plate body 20.

[0051] The upper plate body 10 comprises a second surface 11, a first surface 12 and a first peripheral side surface 13. The second surface 11 is the surface of the upper plate body 10 away from the lower plate body 20. In the second direction Y, the first surface 12 is arranged opposite to the second surface 11 and faces the lower plate body 20. The first peripheral side surface 13 is connected between the second surface 11 and the first surface 12. The first peripheral side surface 13 comprises a first side surface 13a, a second side surface 13b, a third side surface 13c and a fourth side surface 13d. In the first direction X, the first side surface 13a and the second side surface 13b are arranged opposite to each other. The third side surface 13c and the fourth side surface 13d are connected between the first side surface 13a and the second side surface 13b, and are arranged opposite to each other in the third direction Z.

[0052] The upper plate body 10 is provided with a liquid outlet 14 and a liquid inlet 15. The liquid outlet 14 and the liquid inlet 15 are located between the first side surface 13a and the second side surface 13b, and between the third side surface 13c and the fourth side surface 13d, and are spaced apart from the first side surface 13a, the second side surface 13b, the third side surface 13c and the fourth side surface 13d. The liquid outlet 14 and the liquid inlet 15 both penetrate the upper plate body 10 along the second direction Y, and are spaced apart along the third direction Z. Specifically, the distance between the liquid outlet 14 and the first side surface 13a is less than the distance between the liquid outlet 14 and the second side surface 13b, and the distance between the liquid inlet 15 and the first side surface 13a is less than the distance between the liquid inlet 15 and the second side surface 13b. That is, the liquid outlet 14 and the liquid inlet 15 are both located at one end of the upper plate body 10 close to the first side surface 13a, and are spaced apart from the first side surface 13a. The distance between the liquid outlet 14 and the third side surface 13c is less than the distance between the liquid outlet 14 and the fourth side surface 13d. That is, the liquid outlet 14 is close to the third side surface 13c. The distance between the liquid inlet 15 and the third side surface 13c is greater than the distance between the liquid inlet 15 and the fourth side surface 13d. That is, the liquid inlet 15 is close to the fourth side surface 13d and is spaced apart from the fourth side surface 13d.

[0053] In the embodiment, the upper plate body 10 includes a second upper plate body 10a and a first upper plate body 10b. Along the third direction Z, the second upper plate body 10a and the first upper plate body 10b are arranged in sequence and are fixedly connected to each other. The length direction of the second upper plate body 10a and the first upper plate body 10b are both parallel to the first direction X, and the width direction of the second upper plate body 10a and the first upper plate body 10b are both parallel to the third direction Z. The second upper plate body 10a is provided with the liquid outlet 14. The first upper plate body 10b is provided with the liquid inlet 15.

[0054] The second upper plate body 10a includes the third side surface 13c and a first connecting surface 1. Along the third direction Z, the first connecting surface 1 is arranged opposite to the third side surface 13c and faces the first upper plate body 10b. The first upper plate body 10b includes the fourth side surface 13d and a second connecting surface 2. Along the third direction Z, the second connecting surface 2 is arranged opposite to the fourth side surface 13d and faces the first connecting surface 1. The first connecting surface 1 and the second connecting surface 2 are fixedly connected. For example, the first connecting surface 1 and the second connecting surface 2 are fixedly connected by welding or the like, so as to realize the fixed connection of the second upper plate body 10a and the first upper plate body 10b.

[0055] Please refer to Figure 7 , Figure 7 is Figure 5 the structural schematic view of the liquid cooling mainboard 100 in another angle.

[0056] The lower plate body 20 comprises a third surface 21, a fourth surface 22 and a second peripheral side surface 23. The third surface 21 is a surface of the lower plate body 20 facing the upper plate body 10. The fourth surface 22 is disposed opposite to the third surface 21 along the second direction Y and is a surface of the lower plate body 20 away from the upper plate body 10. The second peripheral side surface 23 is connected between the third surface 21 and the fourth surface 22. The second peripheral side surface 23 comprises a fifth side surface 23a, a sixth side surface 23b, a seventh side surface 23c and an eighth side surface 23d. The fifth side surface 23a and the sixth side surface 23b are disposed opposite to each other along the length direction of the lower plate body 20. The fifth side surface 23a is oriented in the same direction as the first side surface 13a, and the sixth side surface 23b is oriented in the same direction as the second side surface 13b. The seventh side surface 23c and the eighth side surface 23d are disposed opposite to each other along the third direction Z and are connected between the fifth side surface 23a and the sixth side surface 23b. The seventh side surface 23c is oriented in the same direction as the third side surface 13c, and the eighth side surface 23d is oriented in the same direction as the fourth side surface 13d.

[0057] In the embodiment, the lower plate body 20 comprises a second lower plate body 20a and a first lower plate body 20b. The second lower plate body 20a and the first lower plate body 20b are sequentially arranged along the third direction Z and are fixedly connected to each other. The length direction of the second lower plate body 20a and the first lower plate body 20b are parallel to the first direction X, and the width direction of the second lower plate body 20a and the first lower plate body 20b are parallel to the third direction Z. The second lower plate body 20a is parallel to and spaced apart from the second upper plate body 10a along the second direction Y, and the first lower plate body 20b is parallel to and spaced apart from the first upper plate body 10b along the second direction Y.

[0058] The second lower plate body 20a comprises the seventh side surface 23c and a third connecting surface 3. The third connecting surface 3 is disposed opposite to the seventh side surface 23c along the third direction Z and faces the first lower plate body 20b. The first lower plate body 20b comprises the eighth side surface 23d and a fourth connecting surface 4. The fourth connecting surface 4 is disposed opposite to the eighth side surface 23d along the third direction Z and faces the third connecting surface 3. The third connecting surface 3 and the fourth connecting surface 4 are fixedly connected. For example, the third connecting surface 3 and the fourth connecting surface 4 are fixedly connected by welding or the like to achieve the fixed connection of the second lower plate body 20a and the first lower plate body 20b.

[0059] The partition plate 70 is located between the first surface 12 and the third surface 21, and is connected between the second surface 11 and the third surface 21. The length direction of the partition plate 70 is parallel to the first direction X. In the third direction Z, the partition plate 70 is located in the middle of the liquid cooling mainboard 100, and is connected between the first side surface 13a of the upper plate body 10 and the fifth side surface 23a of the lower plate body 20, and is spaced apart from the second side surface 13b of the upper plate body 10 and the sixth side surface 23b of the lower plate body 20. Specifically, the partition plate 70 divides the liquid cooling mainboard 100 into a liquid outlet area a and a liquid inlet area b. In the third direction Z, the liquid outlet area a and the liquid inlet area b are arranged in sequence, and are isolated from each other at one end close to the first side surface 13a, and are communicated at one end close to the second side surface 13b. The liquid outlet 14 is located in the liquid outlet area a and is spaced apart from the partition plate 70, and the liquid inlet 15 is located in the liquid inlet area b and is spaced apart from the partition plate 70.

[0060] In this embodiment, the partition plate 70 includes a first sub-partition plate 71 and a second sub-partition plate 72. In the third direction Z, the first sub-partition plate 71 and the second sub-partition plate 72 are arranged in sequence and are fixedly connected to each other. Specifically, the first sub-partition plate 71 faces the liquid outlet area a and is fixedly connected between the second upper plate body 10a and the second lower plate body 20a. The first sub-partition plate 71 includes a first wall surface 35 and a fifth connecting surface 5. The first wall surface 35 faces the third side surface 13c. In the third direction Z, the fifth connecting surface 5 is arranged opposite to the first wall surface 35 and faces the second sub-partition plate 72. The fifth connecting surface 5 is flush with the first connecting surface 1 and the third connecting surface 3, and is connected between the first connecting surface 1 and the third connecting surface 3.

[0061] The second sub-partition plate 72 is located on the side of the first sub-partition plate 71 away from the third side surface 13c, and is fixedly connected between the first upper plate body 10b and the first lower plate body 20b. The second sub-partition plate 72 faces the liquid inlet area b. The second sub-partition plate 72 includes a second wall surface 36 and a sixth connecting surface 6. The second wall surface 36 faces the fourth side surface 13d. In the third direction Z, the sixth connecting surface 6 is arranged opposite to the second wall surface 36 and faces the first sub-partition plate 71. The sixth connecting surface 6 is flush with the second connecting surface 2 and the fourth connecting surface 4, and is connected between the second connecting surface 2 and the fourth connecting surface 4. In addition, the sixth connecting surface 6 is fixedly connected with the fifth connecting surface 5. For example, the fifth connecting surface 5 and the sixth connecting surface 6 are fixedly connected by welding or the like, so as to realize the fixed connection of the first sub-partition plate 71 and the second sub-partition plate 72.

[0062] Please refer to Figure 8 , Figure 8 is Figure 5 the sectional structure schematic view of the liquid cooling mainboard 100 shown in FIG. 1 after being cut along B-B.

[0063] The flow channel plate 30 is located between the first surface 12 and the third surface 21, and is connected between the second surface 11 and the third surface 21, and is spaced apart from the partition plate 70. The flow channel plate 30 is located between the first side surface 13a and the second side surface 13b, between the third side surface 13c and the fourth side surface 13d, between the fifth side surface 23a and the sixth side surface 23b, and between the seventh side surface 23c and the eighth side surface 23d, and is spaced apart from the first side surface 13a, the second side surface 13b, the third side surface 13c, the fourth side surface 13d, the fifth side surface 23a, the sixth side surface 23b, the seventh side surface 23c and the eighth side surface 23d. The length direction of the flow channel plate 30 is parallel to the first direction X. The flow channel plate 30 includes a first end surface 30a and a second end surface 30b. The first end surface 30a faces the first side surface 13a, and is spaced apart from the first side surface 13a, the liquid outlet 14 and the liquid inlet 15. In the first direction X, the second end surface 30b is located opposite the first end surface 30a, and faces the second side surface 13b. The second end surface 30b is located between the first end surface 30a and the second side surface 13b, and is spaced apart from the second side surface 13b.

[0064] In the embodiment, the flow channel plate 30 has a plurality of flow channel plates 30. In the third direction Z, the plurality of flow channel plates 30 are sequentially and spaced apart. Specifically, between every two adjacent flow channel plates 30 in the plurality of flow channel plates 30, a flow channel 60 is formed. Every two adjacent flow channels 60 are communicated with each other at one end close to the first side surface 13a, and are communicated with each other at one end close to the second side surface 13b. The flow channel 60 located in the liquid inlet area b is communicated with the liquid inlet 15, and the flow channel 60 located in the liquid outlet area a is communicated with the liquid outlet 14. Each flow channel 60 is used for flowing cooling water or cooling oil and other heat exchange medium. Each flow channel plate 30 includes two flow channel wall surfaces c. In the third direction Z, the two flow channel wall surfaces c are located opposite each other, and respectively face the flow channels 60 located on the two sides of the flow channel plate 30. Please refer to Figure 9 , Figure 9 is Figure 6 The structure diagram of the C area in the liquid cooling mainboard 100 in the first embodiment is shown in the figure.

[0065] In the embodiment, the flow channel plate 30 adopts the structure of tooth-shaped ribs. The flow channel plate 30 is provided with a first protrusion 37. Specifically, the first protrusion 37 is arranged on the flow channel wall surface c. The first protrusion 37 is located between the first surface 12 and the third surface 21, and is spaced apart from the first surface 12 and the third surface 21, and protrudes from the flow channel wall surface c to the direction of the flow channel 60. Each flow channel wall surface c is provided with a plurality of first protrusions 37. In the second direction Y, the plurality of first protrusions 37 are spaced apart. Exemplarily, the first protrusion 37 is a long strip-shaped protrusion. The length direction of the first protrusion 37 is parallel to the first direction X.

[0066] By arranging the first protrusions 37 on the liquid cooling main plate 100, the heat exchange area between the flow channel plate 30 and the heat exchange medium can be effectively increased, the internal turbulence effect can be increased, and the heat dissipation performance of the liquid cooling plate 2000 can be increased.

[0067] Please refer to Figure 10 , Figure 10 is Figure 6 the structure diagram of the C area in the second embodiment of the liquid cooling main plate 100.

[0068] The difference between the present embodiment and the first embodiment is that the first surface 12 of the upper plate body 10 facing the flow channel 60 is provided with second protrusions 38, the second protrusions 38 are located between the adjacent two flow channel plates 30 and are arranged in a spaced manner. The second protrusions 38 protrude from the first surface 12 to the direction of the flow channel 60, and are arranged in a spaced manner with the lower plate body 20 and the first protrusions 37. Among them, the second protrusions 38 are multiple, and the multiple second protrusions 38 are arranged in a spaced manner. For example, at least one second protrusion 38 is arranged between every two flow channel plates 30.

[0069] By arranging the second protrusions 38 on the liquid cooling main plate 100, the contact area between the first surface 12 and the heat exchange medium can be increased, the internal turbulence effect of the liquid cooling main plate 100 can be further enhanced, and the heat dissipation performance of the liquid cooling plate 2000 can be improved.

[0070] Please continue to refer to Figure 8 In the present embodiment, the plurality of flow channel plates 30 include a plurality of first flow channel plates 31, a plurality of second flow channel plates 32, and a plurality of third flow channel plates d. Along the third direction Z, the plurality of first flow channel plates 31 and the plurality of second flow channel plates 32 are located on one side of the partition plate 70, and the plurality of third flow channel plates d are located on the other side of the partition plate 70.

[0071] The plurality of first flow channel plates 31 and the plurality of second flow channel plates 32 are located on the side of the second sub-partition plate 72 away from the first sub-partition plate 71, and are located in the liquid inlet area b. Specifically, the plurality of first flow channel plates 31 and the plurality of second flow channel plates 32 are connected between the first upper plate body 10b and the first lower plate body 20b, and are located on the side away from the first side surface 13a and the fifth side surface 23a of the liquid inlet 15, and are arranged in a spaced manner with the liquid inlet 15.

[0072] Among them, the plurality of first flow channel plates 31 and the plurality of second flow channel plates 32 are arranged alternately. The first end surface 30a of the plurality of first flow channel plates 31 and the first end surface 30a of the plurality of second flow channel plates 32 are flush. The distance between the second end surface 30b of the second flow channel plate 32 and the second side surface 13b is greater than the distance between the second end surface 30b of the first flow channel plate 31 and the second side surface 13b. That is, the length of the first flow channel plate 31 is greater than the length of the second flow channel plate 32.

[0073] The distance between the second end surface 30b of the second flow channel plate 32 and the second side surface 13b is greater than the distance between the second end surface 30b of the first flow channel plate 31 and the second side surface 13b, and the distances between the second end surfaces 30b of the plurality of second flow channel plates 32 and the second side surface 13b are equal, so that the second flow channel plate 32 has a smaller flow resistance loss along the path generated by the heat exchange medium. At the same time, the cross-sectional area of the channel enclosed between the second end surface 30b of the second flow channel plate 32, the second side surface 13b, the first upper plate body 10b and the first lower plate body 20b is larger, the flow rate of the heat exchange medium passing through the channel is smaller, and the local resistance loss of the channel is smaller. The alternating arrangement of the first flow channel plate 31 and the second flow channel plate 32 with different lengths can reduce the flow resistance loss and the local resistance loss while ensuring sufficient heat exchange, thereby reducing the flow resistance. In addition, the flow resistance loss of the second flow channel plate 32 with a short length is smaller, and more heat exchange medium can pass through under the same flow resistance pressure, which can effectively distribute the heat exchange medium and mix the heat exchange medium evenly, reduce the temperature gradient of the heat exchange medium, reduce the energy consumption of the energy storage device 1000, and improve the product competitiveness.

[0074] In addition, in the direction from the fourth side surface 13d to the third side surface 13c, the distance between the second end surface 30b of the plurality of first flow channel plates 31 and the second side surface 13b gradually increases, so as to ensure that in the third direction Z, the edge area of the liquid inlet area b away from the partition plate 70 is distributed to less heat exchange medium, so as to ensure that the middle area close to the partition plate 70 can be distributed to more heat exchange medium, thereby improving the heat dissipation performance of the liquid cooling plate 2000. It should be noted that the distance between the second end surface 30b of the second flow channel plate 32 and the second side surface 13b can be set according to the arrangement of the energy storage module 3000 on the liquid cooling plate 2000, and the present application does not make specific limitation thereto.

[0075] The plurality of third flow channel plates d are located on the side of the first sub-partition plate 71 away from the second sub-partition plate 72, and are located in the liquid outlet area a. Specifically, the plurality of third flow channel plates d include a plurality of fourth flow channel plates 33 and a plurality of fifth flow channel plates 34. The plurality of fourth flow channel plates 33 and the plurality of fifth flow channel plates 34 are connected between the second upper plate body 10a and the second lower plate body 20a, and are located on the side of the liquid outlet 14 away from the first side surface 13a and the fifth side surface 23a, and are spaced apart from the liquid outlet 14.

[0076] The plurality of fourth flow channel plates 33 are arranged close to the third side surface 13c. The first end surfaces 30a of the plurality of fourth flow channel plates 33 are flush, and the distance between the second end surfaces 30b of the plurality of fourth flow channel plates 33 and the second side surface 13b is equal. The plurality of fifth flow channel plates 34 are arranged on the side of the plurality of fourth flow channel plates 33 facing the partition plate 70. The first end surfaces 30a of the plurality of fifth flow channel plates 34 are flush with the first end surfaces 30a of the plurality of fourth flow channel plates 33. In the direction of the fourth flow channel plates 33 toward the partition plate 70, the distance between the second end surfaces 30b of the plurality of fifth flow channel plates 34 and the second side surface 13b gradually increases, so that more heat exchange medium can flow through the middle region close to the partition plate 70, thereby enhancing the heat exchange effect of the liquid cooling main plate 100.

[0077] In addition, the distance between the second end surface 30b of each fourth flow channel plate 33 and the second side surface 13b is less than the distance between any fifth flow channel plate 34 and the second side surface 13b. In other words, the length of the fourth flow channel plate 33 is greater than the length of the fifth flow channel plate 34. The fourth flow channel plate 33 has a certain length, which can sufficiently transfer the heat of the energy storage module 3000 to the heat exchange medium through the second upper plate body 10a and the third flow channel plate d, and prevent heat accumulation in the corner between the second upper plate body 10a and the second lower plate body 20a. In other embodiments, the fourth flow channel plate 33 can also be only one.

[0078] Referring to Figure 5 and Figure 6 , the first side plate 40 is fixedly connected between the second upper plate body 10a and the second lower plate body 20a. Specifically, the first side plate 40 is fixedly connected between the third side surface 13c and the seventh side surface 23c. The second upper plate body 10a, the second lower plate body 20a, the first sub-partition plate 71, the third flow channel plate d, and the first side plate 40 are integrally formed. For example, the second upper plate body 10a, the second lower plate body 20a, the first sub-partition plate 71, the third flow channel plate d, and the first side plate 40 can be integrally formed by aluminum extrusion. The integrally formed design can reduce the manufacturing cost of the liquid cooling main plate 100 by 20%, and the second upper plate body 10a, the second lower plate body 20a, the first sub-partition plate 71, the third flow channel plate d, and the first side plate 40 do not need to be welded with each other. This not only reduces the thermal resistance of the liquid cooling main plate 100 and increases the heat transfer performance of the liquid cooling main plate 100, but also reduces the welding points of the liquid cooling main plate 100, thereby avoiding the risk of liquid leakage of the liquid cooling main plate 100.

[0079] The second side plate 50 is mounted on the first upper plate body 10b and the first lower plate body 20b. Specifically, the second side plate 50 is fixedly connected with the fourth side surface 13d and the eighth side surface 23d. Among them, the first upper plate body 10b, the first lower plate body 20b, the second sub partition plate 72, the first flow channel plate 31, the second flow channel plate 32 and the second side plate 50 are integrally formed. For example, the first upper plate body 10b, the first lower plate body 20b, the second sub partition plate 72, the first flow channel plate 31, the second flow channel plate 32 and the second side plate 50 can also be integrally formed by aluminum extrusion. The design of integrally forming can reduce the manufacturing cost of the liquid cooling mainboard 100 by 20%, and the first upper plate body 10b, the first lower plate body 20b, the second sub partition plate 72, the first flow channel plate 31, the second flow channel plate 32 and the second side plate 50 do not need to be welded between each other, which not only can reduce the thermal resistance of the liquid cooling mainboard 100 and increase the heat transfer performance of the liquid cooling mainboard 100, but also can reduce the welding points of the liquid cooling mainboard 100 and avoid the risk of liquid leakage of the liquid cooling mainboard 100.

[0080] In other embodiments, the second upper plate body 10a, the first upper plate body 10b, the second lower plate body 20a, the first lower plate body 20b, the partition plate 70, the first flow channel plate 31, the second flow channel plate 32, the third flow channel plate d, the first side plate 40 and the second side plate 50 are integrally formed. For example, the second upper plate body 10a, the first upper plate body 10b, the second lower plate body 20a, the first lower plate body 20b, the partition plate 70, the first flow channel plate 31, the second flow channel plate 32, the third flow channel plate d, the first side plate 40 and the second side plate 50 can be integrally formed by aluminum extrusion, and do not need to be welded between each other, which not only can reduce the thermal resistance of the liquid cooling mainboard 100 and increase the heat transfer performance of the liquid cooling mainboard 100, but also can reduce the welding points of the liquid cooling mainboard 100 and avoid the risk of liquid leakage of the liquid cooling mainboard 100.

[0081] In this embodiment, the liquid cooling mainboard 100 can include a first liquid cooling subboard 110 and a second liquid cooling subboard 120. Along the third direction Z, the first liquid cooling subboard 110 and the second liquid cooling subboard 120 are arranged in sequence and fixedly connected with each other. Specifically, the first liquid cooling subboard 110 includes the second upper plate body 10a, the second lower plate body 20a, the first sub partition plate 71, the third flow channel plate d and the first side plate 40. The second liquid cooling subboard 120 includes the first upper plate body 10b, the first lower plate body 20b, the second sub partition plate 72, the first flow channel plate 31 and the second flow channel plate 32 and the first side plate.

[0082] Please continue to refer to Figure 3 and Figure 4The first end plate 200 is installed at one end of the liquid cooling main plate 100 close to the liquid outlet 14 and the liquid inlet 15, and is fixedly connected with the first side surface 13a of the upper plate body 10 and the fifth side surface 23a of the lower plate body. The second end plate 300 is installed at one end of the liquid cooling main plate 100 away from the liquid outlet 14 and the liquid inlet 15, and is fixedly connected with the second side surface 13b and the sixth side surface 23b. The first limiting plate 400, the second limiting plate 500, the liquid inlet pipe 600 and the liquid outlet pipe 700 are located on the side of the second surface 11 away from the first surface 12, and are all installed on the second surface 11. The first limiting plate 400 and the second limiting plate 500 are located on the side of the upper plate body 10 away from the lower plate body 20. The first limiting plate 400 and the second limiting plate 500 are arranged at intervals along the length direction of the liquid cooling plate 2000. The liquid inlet pipe 600 is in communication with the liquid inlet 15, so as to supply the heat exchange medium to flow into the liquid inlet area b. The liquid outlet pipe 700 is in communication with the liquid outlet 14, so as to supply the heat exchange medium to flow out from the liquid outlet area a.

[0083] Please continue to refer to Figure 2 The energy storage module 3000 is installed on the surface of the upper plate body 10 away from the lower plate body 20. Specifically, the energy storage module 3000 is installed on the second surface 11, and is located between the first limiting plate 400 and the second limiting plate 500, and is also located between the first side plate 40 and the second side plate 50. The first limiting plate 400 and the second limiting plate 500 jointly limit the length direction of the energy storage module 3000, so as to ensure that the energy storage module 3000 does not displace in the first direction X. The first side plate 40 and the second side plate 50 jointly limit the width direction of the energy storage module 3000, so as to ensure that the energy storage module 3000 does not displace in the third direction Z, thereby ensuring the assembly stability and improving the use safety of the energy storage device 1000.

[0084] The liquid cooling plate 2000 provided by the embodiment is characterized in that the distance between the second end surface 30b of the second flow channel plate 32 and the second side surface 13b is greater than the distance between the second end surface 30b of the first flow channel plate 31 and the second side surface 13b, so that the second flow channel plate 32 has a smaller flow resistance loss caused by the heat exchange medium. Meanwhile, the cross-sectional area of the channel enclosed between the second end surface 30b of the second flow channel plate 32, the second side surface 13b, the first upper plate body 10b and the first lower plate body 20b is relatively large, the flow rate of the heat exchange medium through the channel is relatively small, and the local resistance loss of the channel is relatively small. The alternating arrangement of the first flow channel plate 31 and the second flow channel plate 32 with different lengths can reduce the flow resistance loss and the local resistance loss while ensuring sufficient heat exchange, so that the overall flow resistance of the liquid cooling main plate 100 is relatively small. In addition, the flow resistance loss of the second flow channel plate 32 with a short length is relatively small, and a larger amount of heat exchange medium can pass through under the same flow resistance pressure, so that the heat exchange medium can be effectively distributed and mixed uniformly, the temperature gradient of the heat exchange medium is reduced, the heat dissipation performance of the energy storage device 1000 is improved, and the flow resistance can be reduced by more than 70% during operation, thereby reducing the energy consumption of the energy storage device 1000.

[0085] The embodiment also provides a power utilization device, such as an energy storage cabinet, a new energy vehicle or the like. The power utilization device comprises the energy storage device 1000 in the above embodiment. Since the specific structure and technical effects of the energy storage device 1000 have been described in detail in the foregoing, no further description is given herein. The power utilization device provided by the embodiment is characterized in that the energy storage device 1000 is arranged to supply power to the power utilization device, so as to improve the heat dissipation performance and use safety and reliability of the power utilization device.

[0086] The above description is only optional embodiments of the present application, and the above embodiments are only used to help understand the core idea of the present application, and do not limit the patent scope of the present application; meanwhile, for those skilled in the art, according to the concept of the present application, equivalent structural transformation is made by using the present application specification and drawings, or direct / indirect application in other related technical fields, which is also included in the patent protection scope of the present application.

Claims

1. A liquid-cooled plate, characterized in that, The liquid cooling plate comprises an upper plate body, a lower plate body, a partition plate and a plurality of flow channel plates. The upper plate body comprises a first side and a second side, which are oppositely arranged along a first direction. The upper plate body is provided with a liquid outlet and a liquid inlet, which penetrate the upper plate body along a second direction and are spaced apart from each other along a third direction. The distance between the liquid inlet and the first side is smaller than the distance between the liquid inlet and the second side. The lower plate body is located on one side of the upper plate body and is spaced apart from the upper plate body along the second direction. The partition plate is fixedly connected between the upper plate body and the lower plate body, and divides the liquid cooling plate into a liquid outlet area and a liquid inlet area. The liquid outlet area and the liquid inlet area are sequentially arranged along the third direction, are isolated from each other at one end close to the first side, and are communicated at one end close to the second side. The liquid outlet is located in the liquid outlet area, and the liquid inlet is located in the liquid inlet area. A plurality of flow channel plates are fixedly connected between the upper plate body and the lower plate body and are sequentially and spaced apart. Each adjacent two of the plurality of flow channel plates form a flow channel. Each adjacent two of the flow channels are communicated with each other at one end close to the first side and are communicated with each other at one end close to the second side. The flow channel located in the liquid inlet area is communicated with the liquid inlet, and the flow channel located in the liquid outlet area is communicated with the liquid outlet. Each flow channel plate comprises a first end face and a second end face oppositely arranged. The first end face faces the first side and is spaced apart from the first side, the liquid outlet and the liquid inlet. The second end face is located between the first end face and the second side and is spaced apart from the second side. The plurality of flow channel plates comprise a plurality of first flow channel plates, a plurality of second flow channel plates and a plurality of third flow channel plates. The plurality of first flow channel plates and the plurality of second flow channel plates are located in the liquid inlet area and are alternately arranged. The distance between the second end face of the second flow channel plate and the second side is greater than the distance between the second end face of the first flow channel plate and the second side. The plurality of third flow channel plates are located in the liquid outlet area.

2. The liquid cold plate of claim 1, wherein, The upper plate body further comprises a third side and a fourth side. The third side and the fourth side are connected between the first side and the second side and are oppositely arranged along the third direction. The distance between the third side and the liquid inlet is greater than the distance between the fourth side and the liquid inlet. Along the direction from the fourth side to the third side, the distance between the second end face of the plurality of first flow channel plates and the second side gradually increases.

3. The liquid cold plate of claim 1 or 2, wherein, The plurality of third flow channel plates comprise a fourth flow channel plate and a plurality of fifth flow channel plates. The plurality of fifth flow channel plates are located on the side of the fourth flow channel plate facing the partition plate. Along the direction from the fourth flow channel plate to the fifth flow channel plate, the distance between the second end face of the plurality of fifth flow channel plates and the second side gradually increases.

4. The liquid cold plate of claim 3, wherein, The first end face of the fourth flow channel plate is flush with the first end face of the fifth flow channel plate, and the distance between the second end face of the fourth flow channel plate and the second side face is smaller than the distance between any fifth flow channel plate and the second side face.

5. The liquid cold plate of claim 3, wherein, The fourth flow channel plate has a plurality of second end faces, and the distance between the second end face of each fourth flow channel plate and the second side face is equal.

6. The liquid cold plate of claim 1, wherein, The upper plate body includes a first upper plate body and a second upper plate body, and the first upper plate body and the second upper plate body are arranged in sequence along the third direction and are fixedly connected to each other. The lower plate body includes a first lower plate body and a second lower plate body, and the first lower plate body and the second lower plate body are arranged in sequence along the third direction and are fixedly connected to each other. The partition plate includes a first sub-partition plate and a second sub-partition plate, and the first sub-partition plate and the second sub-partition plate are arranged in sequence along the third direction and are fixedly connected to each other, the first sub-partition plate is fixedly connected between the second upper plate body and the second lower plate body, and the second sub-partition plate is fixedly connected between the first upper plate body and the first lower plate body. The first flow channel plate and the second flow channel plate are fixedly connected between the first upper plate body and the first lower plate body, and the third flow channel plate is fixedly connected between the second upper plate body and the second lower plate body. The first upper plate body, the first lower plate body, the first flow channel plate, the second flow channel plate, and the second sub-partition plate are integrally formed, and / or the second upper plate body, the second lower plate body, the third flow channel plate, and the first sub-partition plate are integrally formed.

7. The liquid cold plate of claim 1, wherein, Each flow channel plate includes two flow channel wall faces, and the two flow channel wall faces are arranged opposite to each other along the third direction and face the flow channels on the two sides of the flow channel plate, respectively. At least one flow channel wall face is provided with a first protrusion and is spaced apart from the adjacent flow channel plate.

8. The liquid cold plate of claim 7, wherein, The first protrusion has a plurality of first protrusions, and the plurality of first protrusions are spaced apart.

9. The liquid cold plate of claim 1, wherein, The upper plate body includes a first surface facing the flow channel, the first surface is provided with a second protrusion, the second protrusion protrudes from the first surface in the direction of the flow channel, and is spaced apart from the lower plate body.

10. The liquid cold plate of claim 9, wherein, The second protrusion has a plurality of second protrusions, and the plurality of second protrusions are spaced apart.

11. The liquid cold plate of claim 1, wherein, The liquid cooling plate further includes a first side plate and a second side plate, and the first side plate and the second side plate are respectively located at opposite ends of the upper plate body and the lower plate body along the third direction and are fixedly connected between the upper plate body and the lower plate body, and the first side plate and the second side plate are used to limit the movement of the energy storage module along the third direction.

12. The liquid cold plate of claim 1, wherein, The liquid cooling plate further includes a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate are located on the side of the upper plate body away from the lower plate body, and the first limiting plate and the second limiting plate are arranged in sequence along the first direction, and the first limiting plate and the second limiting plate are used to limit the movement of the energy storage module along the first direction.

13. The liquid cold plate of claim 1, wherein, The liquid cooling plate comprises a liquid cooling main plate, a first end plate and a second end plate, the liquid cooling main plate comprises the upper plate body, the lower plate body and a plurality of the flow channel plates, the first end plate and the second end plate are respectively installed at opposite ends of the liquid cooling main plate along the first direction, and the flow channels are closed.

14. The liquid cold plate of claim 1, wherein, The distance between the second end surface and the second side surface of each of the plurality of the second flow channel plates is equal.

15. An energy storage device, characterized by, The energy storage device comprises the liquid cooling plate and an energy storage module, the energy storage module is installed on the surface of the upper plate body away from the lower plate body.

16. The energy storage device of claim 15, wherein, The energy storage device further comprises a cover body, the cover body is installed on the liquid cooling plate and covers the energy storage module.

17. An electrical device, characterized by The energy storage device is used for supplying power to the power consumption equipment.

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