Liquid cooling plate and battery pack

Abstract

The utility model discloses a liquid cooling plate and a battery pack, the liquid cooling plate comprises a first heat exchange area, a second heat exchange area and a third heat exchange area, the first heat exchange area is provided with a plurality of first heat exchange runners, and the plurality of first heat exchange runners are communicated with a first liquid inlet of the liquid cooling plate; the second heat exchange area is provided with a plurality of second heat exchange runners, and the second heat exchange runners are communicated with a second liquid inlet of the liquid cooling plate; the third heat exchange area is provided with a third heat exchange runner; wherein the first heat exchange area and the second heat exchange area are located on the two sides, in the second direction, of the third heat exchange areas correspondingly, and the multiple third heat exchange flow channels communicate with the first heat exchange flow channel and the liquid outlet of the liquid cooling plate and communicate between the second heat exchange flow channel and the liquid outlet of the liquid cooling plate. According to the liquid cooling plate, the first heat exchange flow channel and the second heat exchange flow channel are arranged on the two sides of the third heat exchange flow channel in the second direction, the first heat exchange flow channel and the second heat exchange flow channel are located on the upstream of the third heat exchange flow channel, and the heat exchange efficiency of the battery module located on the periphery of the liquid cooling plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a liquid cooling plate and a battery pack. Background Art

[0002] The performance of lithium-ion batteries is greatly affected by temperature. Too high or too low a temperature will reduce the performance of the battery, reduce the number of charge and discharge cycles of the battery, and reduce the capacity.

[0003] In the related art, when the battery is charging and discharging, the battery module will generate heat, and a cooling plate is required to cool the battery module. However, the outer periphery of the cooling plate is affected by the lower shell of the battery pack, resulting in poor heat exchange effect of the surrounding battery modules. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a liquid cooling plate that can improve the heat exchange efficiency of battery modules located outside the liquid cooling plate, effectively resolving the problem of poor heat exchange between the surrounding battery cells due to the influence of the lower shell of the battery pack on the periphery of the liquid cooling plate.

[0005] According to the liquid cooling plate of the embodiment of the first aspect of the present invention, it includes: a first heat exchange zone, the first heat exchange zone has a plurality of first heat exchange channels arranged in parallel extending along a first direction, and the plurality of first heat exchange channels are all connected to the first liquid inlet of the liquid cooling plate; a second heat exchange zone, the second heat exchange zone has a plurality of second heat exchange channels arranged in parallel extending along the first direction, and the plurality of second heat exchange channels are connected to the second liquid inlet of the liquid cooling plate; a third heat exchange zone, the third heat exchange zone has a plurality of third heat exchange channels arranged in parallel extending along the first direction; wherein, the first heat exchange zone and the second heat exchange zone are respectively located on both sides of the third heat exchange zone along the second direction, and the plurality of third heat exchange channels are all connected between the first heat exchange channel and the liquid outlet of the liquid cooling plate and between the second heat exchange channel and the liquid outlet of the liquid cooling plate, and the first direction is perpendicular to the second direction.

[0006] According to the liquid cooling plate of the embodiment of the present invention, the first heat exchange channel and the second heat exchange channel are arranged on both sides of the second direction of the third heat exchange channel, and the first heat exchange channel and the second heat exchange channel are located upstream of the third heat exchange channel. The temperature of the coolant in the first heat exchange channel and the temperature of the coolant in the second heat exchange channel are both higher than the temperature of the coolant in the third heat exchange channel, which can improve the heat exchange efficiency of the battery module located outside the liquid cooling plate, and can better solve the problem that the periphery of the liquid cooling plate is affected by the lower shell of the battery pack, resulting in poor heat exchange effect of the surrounding battery cells.

[0007] According to some embodiments of the present invention, the first heat exchange zone also has a plurality of fourth heat exchange channels extending along the second direction, and the fourth heat exchange channels are connected between the first heat exchange channels and the first liquid inlet, wherein one of the fourth heat exchange channels is connected to two of the first heat exchange channels; and / or, the second heat exchange zone also has a plurality of fifth heat exchange channels extending along the second direction, and the fifth heat exchange channels are connected between the second heat exchange channels and the second liquid inlet, wherein one of the fifth heat exchange channels is connected to two of the second heat exchange channels.

[0008] According to some embodiments of the present invention, multiple first heat exchange channels include first channels and second channels, and one first channel is connected to at least two second channels; and / or, multiple second heat exchange channels include third channels and fourth channels, and one third channel is connected to at least two fourth channels; and / or, multiple third heat exchange channels include fifth channels and sixth channels, and one fifth channel is connected to at least two sixth channels.

[0009] According to some embodiments of the present invention, the first liquid inlet, the second liquid inlet and the liquid outlet are located on the same side of the liquid cooling plate in the first direction, and the first liquid inlet and the second liquid inlet are respectively located on both sides of the liquid outlet along the second direction.

[0010] According to some embodiments of the present invention, the third heat exchange zone has a first heat exchange part and a second heat exchange part, and multiple first heat exchange channels merge into a sixth heat exchange channel, and the sixth heat exchange channel is connected to the second heat exchange channel in the first heat exchange part; multiple second heat exchange channels merge into a seventh heat exchange channel, and the seventh heat exchange channel is connected to the third heat exchange channel in the second heat exchange part.

[0011] According to some embodiments of the present invention, the first heat exchange part has a first liquid inlet end and a first liquid outlet end, the second heat exchange part has a second liquid inlet end and a second liquid outlet end, the sixth heat exchange channel is connected to the first liquid inlet end, the seventh heat exchange channel is connected to the second liquid inlet end, the first liquid inlet end and the second liquid inlet end are spaced apart, and the first liquid outlet end and the second liquid outlet end are connected.

[0012] According to some embodiments of the present invention, the first heat exchange part has a plurality of the third heat exchange channels in parallel, and the second heat exchange part has a plurality of the third heat exchange channels in parallel. The plurality of the third heat exchange channels in the first heat exchange part are merged step by step along the flow direction of the coolant, and the plurality of the third heat exchange channels in the second heat exchange part are merged step by step along the flow direction of the coolant.

[0013] According to some embodiments of the present invention, a battery cell is arranged on one side of the third direction of the liquid cooling plate, the battery cell extends along the second direction, and the size of two adjacent fourth heat exchange channels or the fifth heat exchange channels in the first direction is greater than or equal to the size of the battery cell in the first direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0014] According to some embodiments of the present invention, a battery cell is provided on one side of the third direction of the liquid cooling plate, the battery cell extends along the second direction, and the size of the battery cell along the second direction is less than or equal to the size of three adjacent first heat exchange channels or three adjacent second heat exchange channels in the second direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0015] A battery pack according to an embodiment of the second aspect of the present invention includes: a liquid cooling plate according to an embodiment of the first aspect of the present invention.

[0016] According to the battery pack of the embodiment of the present invention, by providing the above-mentioned liquid cooling plate, the heat exchange efficiency of the battery module located outside the liquid cooling plate can be improved, and the problem of poor heat exchange effect of the surrounding battery cells due to the periphery of the liquid cooling plate being affected by the lower shell of the battery pack can be better solved.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a perspective view of a liquid cooling plate according to some embodiments of the present invention;

[0020] Figure 2 yes Figure 1 Top view of the liquid cooling plate;

[0021] Figure 3 yes Figure 2 Sectional view along line AA;

[0022] Figure 4 yes Figure 1 Schematic diagram of the other direction of the liquid cooling plate;

[0023] Figure 5 yes Figure 4 Cross-sectional view along line BB;

[0024] Figure 6 yes Figure 4 Cross-sectional view along CC line;

[0025] Figure 7 yes Figure 1 Schematic diagram of the liquid cold plate, showing the direction of coolant flow.

[0026] Reference numerals:

[0027] 10. Liquid cooling plate; 101. Inlet and outlet modules; 102. Temperature sensor;

[0028] 1. First heat exchange zone; 11. First heat exchange channel; 111. First channel; 112. Second channel; 12. Fourth heat exchange channel; 13. Sixth heat exchange channel;

[0029] 2. Second heat exchange zone; 21. Second heat exchange channel; 211. Third channel; 212. Fourth channel; 22. Fifth heat exchange channel; 23. Seventh heat exchange channel;

[0030] 3. Third heat exchange zone; 31. First heat exchange section; 311. First liquid inlet; 312. First liquid outlet; 32. Second heat exchange section; 321. Second liquid inlet; 322. Second liquid outlet; 33. Third heat exchange channel; 331. Fifth channel; 332. Sixth channel;

[0031] 4. Liquid inlet; 41. First liquid inlet; 42. Second liquid inlet; 43. Liquid outlet;

[0032] 5. Battery cell. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] Reference below Figure 1-Figure 7 A liquid cooling plate 10 according to an embodiment of the present invention is described.

[0037] According to the liquid cooling plate 10 of the embodiment of the first aspect of the present invention, the liquid cooling plate 10 includes a first heat exchange area 1, a second heat exchange area 2 and a third heat exchange area 3, wherein the first heat exchange area 1 and the second heat exchange area 2 are respectively located in the third heat exchange area 3 along the second direction (for example, refer to the attached Figure 4 In the e2 direction, the second direction may be both sides of the width direction of the liquid cooling plate 10).

[0038] The first heat exchange zone 1 has a plurality of first heat exchange channels 11, and the plurality of first heat exchange channels 11 are all along the first direction (for example, see the attached Figure 4 The first direction may be the length direction of the liquid cooling plate 10 ), and the plurality of first heat exchange channels 11 are arranged in parallel. The plurality of first heat exchange channels 11 are all connected to the first liquid inlet 41 of the liquid cooling plate 10 .

[0039] The second heat exchange region 2 has a plurality of second heat exchange channels 21, each extending along the first direction. The plurality of second heat exchange channels 21 are arranged in parallel and are connected to the second liquid inlet 42 of the liquid cooling plate 10. For example, the first liquid inlet 41 and the second liquid inlet 42 may be formed separately from the same liquid inlet 4, i.e., only one liquid inlet 4 is provided on the liquid cooling plate 10.

[0040] The third heat exchange zone 3 has multiple third heat exchange channels 33, all of which extend along the first direction. The multiple third heat exchange channels 33 are arranged in parallel. The multiple third heat exchange channels 33 are all connected between the first heat exchange channel 11 and the liquid outlet 4 of the liquid cooling plate 10, and between the second heat exchange channel 21 and the liquid outlet 43 of the liquid cooling plate 10. The first direction is perpendicular to the second direction.

[0041] The first heat exchange channel 11 and the second heat exchange channel 21 are arranged on both sides of the second direction of the third heat exchange channel 33. The first heat exchange channel 11 and the second heat exchange channel 21 are respectively connected to the first liquid inlet 41 and the second liquid inlet 42, and the third heat exchange channel 33 is connected to the liquid outlet 43, that is, the third heat exchange channel 33 is located downstream of the first heat exchange channel 11 and the second heat exchange channel 21.

[0042] The coolant within the liquid cooling plate 10 flows through the first heat exchange channel 11 and the second heat exchange channel 21 located on the periphery of the liquid cooling plate 10 to the third heat exchange channel 33 located in the center of the liquid cooling plate 10, and then flows out through the liquid outlet 43. The first heat exchange channel 11 and the second heat exchange channel 21 are located upstream of the third heat exchange channel 33. The temperature of the coolant within the first heat exchange channel 11 and the temperature of the coolant within the second heat exchange channel 21 are both higher than the temperature of the coolant within the third heat exchange channel 33. This can improve the heat exchange efficiency of the battery modules located outside the liquid cooling plate 10, and can effectively solve the problem of poor heat exchange effect of the surrounding battery cells 5 due to the influence of the lower shell of the battery pack around the periphery of the liquid cooling plate 10.

[0043] The liquid cooling plate 10 includes an inlet and outlet module 101 and a temperature sensor 102 . The main dimensions of the liquid cooling plate 10 are length = 1869 mm * width = 1334 mm. The first liquid inlet 41 , the second liquid inlet 42 and the liquid outlet 43 are all concentrated on the inlet and outlet module 101 .

[0044] According to the liquid cooling plate 10 of the embodiment of the present invention, the first heat exchange channel 11 and the second heat exchange channel 21 are arranged on both sides of the second direction of the third heat exchange channel 33, and the first heat exchange channel 11 and the second heat exchange channel 21 are located upstream of the third heat exchange channel 33. The temperature of the coolant in the first heat exchange channel 11 and the temperature of the coolant in the second heat exchange channel 21 are both higher than the temperature of the coolant in the third heat exchange channel 33, which can improve the heat exchange efficiency of the battery module located outside the liquid cooling plate 10, and can better solve the problem that the periphery of the liquid cooling plate 10 is affected by the lower shell of the battery pack, resulting in poor heat exchange effect of the surrounding battery cells 5.

[0045] According to some embodiments of the present invention, referring to Figure 4-Figure 7 The first heat exchange zone 1 also has a plurality of fourth heat exchange channels 12, which extend along the second direction. The plurality of fourth heat exchange channels 12 are all connected between the first heat exchange channel 11 and the first liquid inlet 41, wherein one fourth heat exchange channel 12 is connected to two first heat exchange channels 11. The battery module has a high temperature zone (refer to Figure 7 The high-temperature zone is provided near the first liquid inlet 41 of the liquid cooling plate 10, and the fourth heat exchange channel 12 provided near the first liquid inlet 41 is split into two with the first heat exchange channel 11, thereby improving the heat exchange efficiency of the high-temperature zone of the battery module.

[0046] The second heat exchange zone 2 also has multiple fifth heat exchange channels 22 extending along the second direction. The fifth heat exchange channels 22 communicate between the second heat exchange channels 21 and the second liquid inlet 42. One fifth heat exchange channel 22 connects to two second heat exchange channels 21. The battery module has a high-temperature zone located adjacent to the second liquid inlet 42 of the liquid cooling plate 10. The fifth heat exchange channel 22 located adjacent to the second liquid inlet 42 is split into two to improve heat exchange efficiency in the high-temperature zone of the battery module.

[0047] According to some embodiments of the present invention, referring to Figure 4-Figure 7 The multiple first heat exchange channels 11 include first channels 111 and second channels 112. One first channel 111 is connected to at least two second channels 112. The first channel 111 can be divided into two or more second channels 112, or one first channel 111 can be divided into two second channels 112, wherein the second channel 112 is divided into two second channels 112.

[0048] The multiple second heat exchange channels 21 include a third channel 211 and a fourth channel 212. One third channel 211 is connected to at least two fourth channels 212. The third channel 211 can be divided into two or more fourth channels 212, or one third channel 211 can be divided into two fourth channels 212, wherein the third channel 211 is divided into two fourth channels 212.

[0049] The multiple third heat exchange channels 33 include a fifth channel 331 and a sixth channel 332. One fifth channel 331 is connected to at least two sixth channels 332. The fifth channel 331 can be divided into two or more sixth channels 332, or one fifth channel 331 can be divided into two sixth channels 332.

[0050] According to some embodiments of the present invention, referring to Figure 4 、 Figure 7 The first liquid inlet 41, the second liquid inlet 42 and the liquid outlet 43 are located on the same side of the first direction of the liquid cooling plate 10, and the first liquid inlet 41 and the second liquid inlet 42 are respectively located on both sides of the liquid outlet 43 along the second direction, which can make the flow circuit of the cooling liquid longer.

[0051] According to some embodiments of the present invention, referring to Figure 4 、 Figure 7 The third heat exchange zone 3 has a first heat exchange part 31 and a second heat exchange part 32. Multiple first heat exchange channels 11 merge into a sixth heat exchange channel 13, and the sixth heat exchange channel 13 is connected to the third heat exchange channel 33 in the first heat exchange part 31. Multiple second heat exchange channels 21 merge into a seventh heat exchange channel 23, and the seventh heat exchange channel 23 is connected to the third heat exchange channel 33 in the second heat exchange part 32.

[0052] By combining multiple first heat exchange channels 11 into a single sixth heat exchange channel 13, and connecting the sixth heat exchange channel 13 to the second heat exchange channel 21 within the first heat exchange section 31, the structure connecting the multiple first heat exchange channels 11 to the third heat exchange channel 33 within the first heat exchange section 31 can be simplified. By combining multiple second heat exchange channels 21 into a single seventh heat exchange channel 23, and connecting the seventh heat exchange channel 23 to the third heat exchange channel 33 within the second heat exchange section 32, the structure connecting the multiple second heat exchange channels 21 to the third heat exchange channel 33 within the second heat exchange section 32 can be simplified, thereby simplifying the layout of the flow channels on the liquid cooling plate 10.

[0053] According to some embodiments of the present invention, referring to Figure 4 、 Figure 7The first heat exchange part 31 has a first liquid inlet end 311 and a first liquid outlet end 312, the second heat exchange part 32 has a second liquid inlet end 321 and a second liquid outlet end 322, the sixth heat exchange channel 13 is connected to the first liquid inlet end 311, the seventh heat exchange channel 23 is connected to the second liquid inlet end 321, the first liquid inlet end 311 and the second liquid inlet end 321 are separated, and the first liquid outlet end 312 and the second liquid outlet end 322 are connected. The liquid inlet end of the first heat exchange part 31 and the liquid inlet end of the second heat exchange part 32 are separated, and the first heat exchange channel 11 and the third heat exchange channel 33 in the first heat exchange part 31 form a loop. At the same time, the second heat exchange channel 21 and the third heat exchange channel 33 in the second heat exchange part 32 form a loop, and the liquid outlet end of the first heat exchange part 31 and the liquid outlet end of the second heat exchange part 32 are connected, and the liquid flows out through an outlet port 43, so that two cooling circuits can be formed on the liquid cooling plate 10, which can increase the efficiency of the liquid cooling plate 10 in cooling the battery module.

[0054] According to some embodiments of the present invention, referring to Figure 4 、 Figure 7 The first heat exchange section 31 has multiple third heat exchange channels 33 connected in parallel, and the second heat exchange section 32 has multiple third heat exchange channels 33 connected in parallel. The multiple third heat exchange channels 33 in the first heat exchange section 31 merge in stages along the coolant flow direction, and the multiple third heat exchange channels 33 in the second heat exchange section 32 merge in stages along the coolant flow direction. The third heat exchange channels 33 in the first heat exchange section 31 are arranged in a step-by-step manner, and the third heat exchange channels 33 in the second heat exchange section 32 are arranged in a step-by-step manner. This allows the total heat exchange area of ​​the third heat exchange channels 33 with the battery module to gradually decrease from upstream to downstream. This heat exchange mode with increasing flow rate can reduce the temperature difference of the battery module.

[0055] For example, the first heat exchange portion 31 has four third heat exchange channels 33 , which are merged into three third heat exchange channels 33 downstream of the third heat exchange channels 33 , then merged into two third heat exchange channels 33 , and then merged into one third heat exchange channel 33 .

[0056] For example, the second heat exchange portion 32 has four third heat exchange channels 33 , which are merged into three third heat exchange channels 33 downstream of the third heat exchange channels 33 , then merged into two third heat exchange channels 33 , and then merged into one third heat exchange channel 33 ;

[0057] According to some embodiments of the present invention, referring to Figure 4-Figure 5 A battery cell 5 is arranged on one side of the liquid cooling plate 10 in the third direction. The battery includes multiple battery cells 5. The battery cells 5 extend along the second direction. The size of two adjacent fourth heat exchange channels 12 or fifth heat exchange channels 22 in the first direction is greater than or equal to the size of the battery cell 5 in the first direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0058] The fourth heat exchange channel 12 or the fifth heat exchange channel 22 is arranged adjacent to the high temperature zone of the battery module, so that the battery cells 5 in the high temperature zone have at least one fourth heat exchange channel 12 or fifth heat exchange channel 22, which can improve the heat exchange efficiency of the high temperature zone.

[0059] According to some embodiments of the present invention, referring to Figure 4 、 Figure 6 Battery cells 5 are arranged on one side of the liquid cooling plate 10 in the third direction. These cells extend in the second direction. The size of the battery cells 5 in the second direction is less than or equal to the size of three adjacent first heat exchange channels 11 or three adjacent second heat exchange channels 21 in the second direction. The first, second, and third directions are perpendicular to each other. Each battery cell 5 occupies at most three adjacent first heat exchange channels 11 or three adjacent second heat exchange channels 21, reducing heat concentration in these locations.

[0060] The battery pack according to the second embodiment of the present invention includes: the liquid cooling plate 10 according to the first embodiment of the present invention.

[0061] According to the battery pack of the embodiment of the present invention, by providing the above-mentioned liquid cooling plate 10, the heat exchange efficiency of the battery module located outside the liquid cooling plate 10 can be improved, and the problem that the periphery of the liquid cooling plate 10 is affected by the lower shell of the battery pack, resulting in poor heat exchange effect of the surrounding battery cells 5, can be better solved.

[0062] Throughout this specification, references to terms such as "some embodiments," "optionally," "further," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A liquid cooling plate, characterized in that: include: a first heat exchange zone, the first heat exchange zone having a plurality of first heat exchange channels arranged in parallel and extending in a first direction, the plurality of first heat exchange channels being in communication with the first liquid inlet of the liquid cooling plate; a second heat exchange zone, the second heat exchange zone having a plurality of second heat exchange channels arranged in parallel and extending along the first direction, the plurality of second heat exchange channels being in communication with the second liquid inlet of the liquid cooling plate; a third heat exchange zone, the third heat exchange zone having a plurality of third heat exchange channels arranged in parallel and extending along the first direction; Particularly, the first heat exchange zone and the second heat exchange zone are respectively located on both sides of the third heat exchange zone along the second direction, and the plurality of third heat exchange channels are all connected between the first heat exchange channel and the liquid outlet of the liquid cooling plate and between the second heat exchange channel and the liquid outlet of the liquid cooling plate, and the first direction is perpendicular to the second direction.

2. The liquid cooling plate according to claim 1, wherein: The first heat exchange zone also has a plurality of fourth heat exchange channels extending along the second direction, and the fourth heat exchange channels are connected between the first heat exchange channels and the first liquid inlet, wherein one of the fourth heat exchange channels is connected to two of the first heat exchange channels; and / or, the second heat exchange zone also has a plurality of fifth heat exchange channels extending along the second direction, and the fifth heat exchange channels are connected between the second heat exchange channels and the second liquid inlet, wherein one of the fifth heat exchange channels is connected to two of the second heat exchange channels.

3. The liquid cooling plate according to claim 1, wherein: The plurality of first heat exchange channels include first channels and second channels, and one first channel is connected to at least two second channels; and / or, the plurality of second heat exchange channels include third channels and fourth channels, and one third channel is connected to at least two fourth channels; and / or, the plurality of third heat exchange channels include fifth channels and sixth channels, and one fifth channel is connected to at least two sixth channels.

4. The liquid cooling plate according to claim 1, wherein: The first liquid inlet, the second liquid inlet, and the liquid outlet are located on the same side of the liquid cooling plate in the first direction, and the first liquid inlet and the second liquid inlet are respectively located on both sides of the liquid outlet in the second direction.

5. The liquid cooling plate according to claim 1, wherein: The third heat exchange zone has a first heat exchange part and a second heat exchange part. Multiple first heat exchange channels merge into a sixth heat exchange channel, and the sixth heat exchange channel is connected to the second heat exchange channel in the first heat exchange part. Multiple second heat exchange channels merge into a seventh heat exchange channel, and the seventh heat exchange channel is connected to the third heat exchange channel in the second heat exchange part.

6. The liquid cooling plate according to claim 5, characterized in that: The first heat exchange part has a first liquid inlet end and a first liquid outlet end, the second heat exchange part has a second liquid inlet end and a second liquid outlet end, the sixth heat exchange channel is connected to the first liquid inlet end, the seventh heat exchange channel is connected to the second liquid inlet end, the first liquid inlet end and the second liquid inlet end are spaced apart, and the first liquid outlet end and the second liquid outlet end are connected.

7. The liquid cooling plate according to claim 5, wherein: The first heat exchange part has a plurality of the third heat exchange channels connected in parallel, and the second heat exchange part has a plurality of the third heat exchange channels connected in parallel. The plurality of the third heat exchange channels in the first heat exchange part are merged step by step along the flow direction of the coolant, and the plurality of the third heat exchange channels in the second heat exchange part are merged step by step along the flow direction of the coolant.

8. The liquid cooling plate according to claim 2, wherein: A battery cell is arranged on one side of the third direction of the liquid cooling plate, and the battery cell extends along the second direction. The size of two adjacent fourth heat exchange channels or the fifth heat exchange channels in the first direction is greater than or equal to the size of the battery cell in the first direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

9. The liquid cooling plate according to claim 1, wherein: A battery cell is provided on one side of the third direction of the liquid cooling plate, and the battery cell extends along the second direction. The size of the battery cell along the second direction is less than or equal to the size of three adjacent first heat exchange channels or three adjacent second heat exchange channels in the second direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

10. A battery pack, characterized in that: include: The liquid cooling plate according to any one of claims 1 to 9.

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