Liquid cooling module and battery pack

Abstract

The liquid cooling module comprises a second liquid cooling plate and a third liquid cooling plate, a flow channel is arranged in the second liquid cooling plate, the third liquid cooling plate and the second liquid cooling plate are arranged at an interval, the third liquid cooling plate is provided with a first cooling part, and the second liquid cooling plate is provided with a second cooling part. According to the liquid cooling device, the first cooling part is arranged to be communicated with the flow channel so as to guide the cooling liquid into the first cooling part and / or guide the cooling liquid out of the first cooling part, so that the cooling liquid can flow between the second liquid cooling plate and the third liquid cooling plate, the flowing path of the cooling liquid is simplified, and the requirement of a bent or overlong pipeline is reduced; and the internal space utilization rate of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a liquid cooling module and battery pack. BACKGROUND

[0002] The power battery pack is the energy storage and power output device of the electric vehicle, is the power source of the electric vehicle, in order to make the power battery pack can normally work, need to equip the battery module in the power battery pack with corresponding heat dissipation structure, such as liquid cooling system, to dissipate the heat generated by battery module work as soon as possible, the cooling liquid in the liquid cooling system in the current industry imports and exports liquid cooling board completely rely on pipeline, with the increase of the stacking layer of battery pack, the pipeline design of parallel connection of liquid cooling board is difficult to take into account space limit, resulting in the installation of liquid cooling board is limited.

[0003] Therefore, the liquid cooling system pipeline design in the prior art is complex in space arrangement, and it is urgent to further optimize the liquid cooling module to adapt to the demand of larger capacity battery pack. UTILITARY MODEL CONTENT

[0004] The utility model embodiment provides a liquid cooling module and battery pack to solve or at least partially solve the deficiencies in the prior art.

[0005] Firstly, the utility model embodiment provides a liquid cooling module, comprising:

[0006] Second liquid cooling board, be equipped with flow channel in;

[0007] Third liquid cooling board, interval arrangement with second liquid cooling board, first cooling part is equipped with third liquid cooling board, first cooling part communicates with flow channel to import cooling liquid to first cooling part and / or export cooling liquid from first cooling part.

[0008] Secondly, the utility model embodiment provides a battery pack, comprising battery module and any one embodiment described above liquid cooling module, wherein, battery module is arranged between adjacent liquid cooling board.

[0009] The utility model embodiment has the advantages of:

[0010] The utility model embodiment provides a kind of liquid cooling module and battery pack, the liquid cooling module includes second liquid cooling plate and third liquid cooling plate, flow channel is equipped in the second liquid cooling plate, the third liquid cooling plate is spaced apart with the second liquid cooling plate, the third liquid cooling plate is equipped with first cooling part, by setting the first cooling part and the flow channel is communicated to import cooling liquid to the first cooling part and / or cooling liquid is exported from the first cooling part, to realize cooling liquid flow between the second liquid cooling plate and the third liquid cooling plate, the flow path of cooling liquid is simplified, the demand of bending or overlength pipeline is reduced, and then the internal space utilization of battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0012] Figure 1 The structural diagram of the battery pack provided by the utility model embodiment is shown.

[0013] Figure 2 The structural diagram of the liquid cooling module provided by the utility model embodiment is shown.

[0014] Figure 3 The top view of the liquid cooling module provided by the utility model embodiment is shown.

[0015] Figure 4 The top view of the second liquid cooling plate provided by the utility model embodiment is shown.

[0016] Figure 5 The top view of the third liquid cooling plate provided by the utility model embodiment is shown.

[0017] Figure 6 The first structure diagram of the first joint provided by the utility model embodiment is shown.

[0018] Figure 7 The second structure diagram of the first joint provided by the utility model embodiment is shown.

[0019] Figure 8 The structural diagram of the first connecting joint provided by the utility model embodiment is shown.

[0020] Figure 9 The structural diagram of the first liquid cooling plate provided by the utility model embodiment is shown.

[0021] Explanation of reference signs:

[0022] 1-battery pack; 11-battery module; 12-liquid cooling module; 13-groove; 15-end plate;

[0023] 110-cell; 111-first battery module; 112-second battery module; 113-third battery module; 114-fourth battery module; 141-bottom plate; 151-ventilation opening;

[0024] 121-first liquid cooling plate; 122-second liquid cooling plate; 123-third liquid cooling plate; 124-fourth liquid cooling plate; 125-first joint pipe assembly; 126-second joint pipe assembly; 127-quick-connection plug;

[0025] 1211-first inlet; 1212-first outlet;

[0026] 1220-flow channel; 1221-first sub-inlet; 1222-first sub-outlet; 1223-second sub-inlet; 1224-second sub-outlet; 1225-first through hole; 1226-second through hole; 1227-first liquid inlet flow channel; 1228-first liquid outlet flow channel; 1229-second cooling part;

[0027] 12291-second liquid inlet flow channel; 12292-second liquid outlet flow channel; 12293-first liquid cooling flow channel;

[0028] 1230-first cooling part; 1231-second inlet; 1232-second outlet; 1233-third liquid inlet flow channel; 1234-third liquid outlet flow channel; 1235-second liquid cooling flow channel;

[0029] 1241-third inlet; 1242-third outlet; 1243-fourth liquid inlet flow channel; 1244-fourth liquid outlet flow channel; 1245-third liquid cooling flow channel;

[0030] 1251-first joint; 1252-third joint; 1253-first connection joint; 1254-first pipe;

[0031] 12541-first straight line segment; 12542-second straight line segment; 12543-third straight line segment; 12544-first bending segment; 12545-second bending segment;

[0032] 12510-liquid inlet joint; 12511-first opening; 12512-second opening; 12513-third opening;

[0033] 12531-fourth opening; 12532-fifth opening;

[0034] 1261-second joint; 1262-fourth joint; 1263-second connection joint; 1264-second pipe;

[0035] 12610-outlet connector. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model. In addition, it should be understood that the specific embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model. In the utility model, the orientation words such as 'up' and 'down' are generally used for indicating the up and down in the actual use or working state of the device, and the specific is the drawing direction in the drawings; and 'inner' and 'outer' are used for the contour of the device.

[0037] Please combine Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ; wherein, Figure 1 is the structural schematic diagram of the battery pack provided by the embodiments of the utility model; Figure 2 is the structural schematic diagram of the liquid cooling module provided by the embodiments of the utility model; Figure 3 is the top view of the liquid cooling module provided by the embodiments of the utility model; Figure 4 is the top view of the second liquid cooling plate provided by the embodiments of the utility model; Figure 5 is the top view of the third liquid cooling plate provided by the embodiments of the utility model.

[0038] In an embodiment, the battery pack 1 comprises a battery module 11 and a liquid cooling module 12, the liquid cooling module 12 comprises a plurality of liquid cooling plates stacked, and the battery module 11 is arranged between adjacent liquid cooling plates.

[0039] The liquid cooling module 12 includes a first liquid cooling plate 121, a second liquid cooling plate 122, and a third liquid cooling plate 123. The second liquid cooling plate 122 is arranged above the first liquid cooling plate 121. The second liquid cooling plate 122 is provided with a flow channel 1220. The third liquid cooling plate 123 is arranged in a spaced manner with the second liquid cooling plate 122. The third liquid cooling plate 123 is provided with a first cooling part 1230. The first cooling part 1230 is in communication with the flow channel 1220 to guide the cooling liquid into and / or out of the first cooling part 1230. Thus, the cooling liquid can flow between the second liquid cooling plate 122 and the third liquid cooling plate 123. The flow path of the cooling liquid is simplified, the need for curved or excessively long pipelines is reduced, and the internal space utilization rate of the battery pack 1 is improved.

[0040] Please continue Figure 1 to Figure 5 In an embodiment, the flow channel 1220 is provided with a first liquid inlet flow channel 1227 and a first liquid outlet flow channel 1228. The second liquid cooling plate 122 is further provided with a second cooling part 1229 between the first liquid inlet flow channel 1227 and the first liquid outlet flow channel 1228. The second liquid cooling plate 122 includes a first sub-inlet 1221, a first sub-outlet 1222, a second sub-inlet 1223, and a second sub-outlet 1224.

[0041] The second cooling part 1229 is connected to the second sub-inlet 1223 at one end and connected to the second sub-outlet 1224 at the other end. The first liquid inlet flow channel 1227 is connected to the first sub-inlet 1221 at one end and connected to one end of the first cooling part 1230 at the other end. The first liquid outlet flow channel 1228 is connected to the first sub-outlet 1222 at one end and connected to the other end of the first cooling part 1230 at the other end.

[0042] Specifically, the third liquid cooling plate 123 and the first liquid cooling plate 121 are arranged in the same layer and in a spaced manner along a first direction Z. The third liquid cooling plate 123 includes a second inlet 1231 and a second outlet 1232. The first liquid inlet flow channel 1227 is connected to the first sub-inlet 1221 at one end and connected to the second inlet 1231 at the other end. The first liquid outlet flow channel 1228 is connected to the first sub-outlet 1222 at one end and connected to the second outlet 1232 at the other end. The second cooling part 1229 is connected to the second sub-inlet 1223 at one end and connected to the second sub-outlet 1224 at the other end.

[0043] The one end of the first liquid inlet channel 1227 and the first sub-inlet 1221, the one end of the first liquid outlet channel 1228 and the first sub-outlet 1222 can be connected by pipelines. It can be understood that, in the embodiment, the one end of the first liquid inlet channel 1227 is connected with the first sub-inlet 1221, the other end of the first liquid inlet channel 1227 is connected with the second inlet 1231, the one end of the first liquid outlet channel 1228 is connected with the first sub-outlet 1222, and the other end of the first liquid outlet channel 1228 is connected with the second outlet 1232, so that the cooling liquid can be transported from the second liquid cooling plate 122 to the third liquid cooling plate 123. The second liquid inlet channel 12291 and the second liquid outlet channel 12292 can be used as transition pipelines, so that the flow path of the cooling liquid is more simple, the need for curved or excessively long pipelines in the related art is reduced, the space occupied by the pipelines can be significantly reduced, and the space utilization rate inside the battery pack 1 is improved.

[0044] In addition, the cooling liquid can be uniformly distributed between the second liquid cooling plate 122 and the third liquid cooling plate 123, which is very important for effective cooling of the multi-layer structure, avoids the phenomenon of overcooling or overheating of some cooling plates, and ensures the overall cooling effect of the liquid cooling module 12.

[0045] It should be noted that the first direction is the Z direction in the battery module 11, that is, Figure 1 the height direction of the battery module 11 in the battery pack 1, the second direction is the X direction in the battery module 11, that is, Figure 1 the length direction of the battery module 11 in the battery pack 1, and the third direction is the Y direction in the battery module 11, that is, Figure 1 the width direction of the battery module 11 in the battery pack 1. Figure 1 Figure 1 Figure 1 the width direction of the battery module 11 in the battery pack 1.

[0046] Please continue to combine Figure 1 to Figure 5 ; in an embodiment, the second cooling part 1229 includes a second liquid inlet channel 12291, a second liquid outlet channel 12292, and a plurality of first liquid cooling channels 12293 arranged in parallel; one end of the second liquid inlet channel 12291 is connected with the second sub-inlet 1223, the other end of the second liquid inlet channel 12291 is in communication with one end of a plurality of first liquid cooling channels 12293, the other end of a plurality of first liquid cooling channels 12293 is in communication with one end of the second liquid outlet channel 12292, and the other end of the first liquid outlet channel 1228 is connected with the second sub-outlet 1224.

[0047] ​​It can be understood that the embodiment optimizes the flow path of the cooling liquid in the second liquid cooling plate 122 by arranging the second liquid inlet channel 12291, the second liquid outlet channel 12292, and a plurality of first liquid cooling channels 12293 in parallel. The second liquid inlet channel 12291 and the second liquid outlet channel 12292 can effectively control the flow of the cooling liquid, which is uniformly distributed in each first liquid cooling channel 12293, and reduce the problem of high fluid resistance or unstable flow in a single channel, thereby achieving better fluid management.

[0048] Specifically, when the cooling liquid enters the second liquid inlet channel 12291 through the second sub-inlet 1223, the second liquid inlet channel 12291 can guide the cooling liquid to be uniformly distributed into each parallel first liquid cooling channel 12293, thereby avoiding excessive or insufficient flow in a certain first liquid cooling channel 12293, reducing the difference in resistance of the cooling liquid in different paths, and ensuring the balance of the outflow rate and flow of each channel. At the same time, the second liquid outlet channel 12292 can uniformly converge the cooling liquid in each first liquid inlet channel 1227 and discharge it from the second sub-outlet 1224, thereby achieving uniform flow of the cooling liquid in each liquid cooling plate and improving the overall heat dissipation effect and fluid balance of the system.

[0049] Please continue to combine Figure 1 to Figure 5 In an embodiment, the first cooling part 1230 includes a third liquid inlet channel 1233, a third liquid outlet channel 1234, and a plurality of second liquid cooling channels 1235 arranged in parallel. One end of the third liquid inlet channel 1233 is connected with the second inlet 1231, the other end of the third liquid inlet channel 1233 is in communication with one end of a plurality of second liquid cooling channels 1235, the other end of the plurality of second liquid cooling channels 1235 is in communication with one end of the third liquid outlet channel 1234, and the other end of the third liquid outlet channel 1234 is connected with the second outlet 1232.

[0050] It can be understood that the embodiment optimizes the flow path of the cooling liquid in the third liquid cooling plate 123 by arranging the first cooling part 1230 to include the second liquid inlet channel 12291, the second liquid outlet channel 12292, and a plurality of second liquid cooling channels 1235 arranged in parallel. The second liquid inlet channel 12291 and the second liquid outlet channel 12292 can effectively control the flow of the cooling liquid, which is uniformly distributed in each second liquid cooling channel 1235, and reduce the problem of high fluid resistance or unstable flow in a single channel, thereby achieving better fluid management.

[0051] Please continue to combineFigure 1 to Figure 5 ; the first liquid inlet flow channel 1227 is not communicated with the second liquid inlet flow channel 12291, and / or the first liquid outlet flow channel 1228 is not communicated with the second liquid outlet flow channel 12292.

[0052] It should be noted that the present embodiment does not make specific restrictions on the flow channel communication mode between the first liquid inlet flow channel 1227, the second liquid inlet flow channel 12291, the first liquid outlet flow channel 1228 and the second liquid outlet flow channel 12292, but in order to better illustrate the innovation of the present utility model, the present embodiment takes the first liquid inlet flow channel 1227 and the second liquid inlet flow channel 12291 not communicated, and the first liquid outlet flow channel 1228 and the second liquid outlet flow channel 12292 not communicated as an example to illustrate the technical scheme of the present utility model.

[0053] It can be understood that the present embodiment forms a separate circuit by setting the first liquid inlet flow channel 1227, the third liquid inlet flow channel 1233, the second liquid cooling flow channel 1235, the third liquid outlet flow channel 1234 and the first liquid outlet flow channel 1228, and forms a separate circuit by setting the second liquid inlet flow channel 12291, the first liquid cooling flow channel 12293 and the first liquid outlet flow channel 1228, thereby avoiding the cross and interference between different liquid flows, and ensuring that the cooling liquid flow in each circuit can be independently controlled.

[0054] Specifically, one end of the first liquid inlet flow channel 1227 is connected with the first sub-inlet 1221, and one end of the second liquid inlet flow channel 12291 is connected with the second sub-inlet 1223, thereby ensuring that the cooling liquid flows in different flow channels respectively, avoiding the mixing phenomenon of the cooling liquid flow, and making the operation of the liquid cooling module 12 more stable; at the same time, the first liquid inlet flow channel 1227 is not communicated with the second liquid inlet flow channel 12291, and the first liquid outlet flow channel 1228 is not communicated with the second liquid outlet flow channel 12292, which can avoid excessive fluid resistance or pressure drop in the second liquid cooling plate 122, and ensure that the flow rate and pressure in each flow channel of the cooling liquid in the second liquid cooling plate 122 remain uniform.

[0055] Please continue to combine Figure 1 to Figure 5 ; in an embodiment, the first liquid inlet flow channel 1227, the first liquid outlet flow channel 1228, the third liquid inlet flow channel 1233 and the third liquid outlet flow channel 1234 are all straight line type flow channel structures.

[0056] It can be understood that the straight flow channel structure can reduce the friction and resistance of the cooling liquid in the flow channel, ensure that the cooling liquid can smoothly pass through each flow channel, so that the cooling liquid can flow quickly with less energy consumption, thereby improving the flow efficiency of the whole system; and the design of the straight flow channel simplifies the manufacturing process and reduces the processing difficulty and cost brought by the complex flow channel design.

[0057] Please continue to combine Figure 1 to Figure 5 ; In an embodiment, the first liquid cooling plate 121 includes a first inlet 1211 and a first outlet 1212 connected in communication, the liquid cooling module 12 includes a plurality of fourth liquid cooling plates 124, a first joint pipe assembly 125 and a second joint pipe assembly 126; the fourth liquid cooling plate 124 is arranged on the side of the first liquid cooling plate 121 away from the first liquid cooling plate 121, a plurality of fourth liquid cooling plates 124 are arranged in a first direction Z, the fourth liquid cooling plate 124 includes a third inlet 1241 and a third outlet 1242, the first liquid cooling plate 121 and the fourth liquid cooling plate 124 are arranged in a spaced manner, and the area of the first liquid cooling plate 121 is smaller than the area of the fourth liquid cooling plate 124.

[0058] The first joint pipe assembly 125 is arranged at one end of a plurality of fourth liquid cooling plates 124; the second joint pipe assembly 126 is arranged at the other end of a plurality of fourth liquid cooling plates 124; wherein the first joint pipe assembly 125 connects the first inlet 1211, the first sub-inlet 1221, the second sub-inlet 1223 and the third inlet 1241, the second joint pipe assembly 126 connects the first outlet 1212, the first sub-outlet 1222, the second sub-outlet 1224 and the third outlet 1242, the first joint pipe assembly 125 and the second joint pipe assembly 126 can be arranged in a spaced manner along a second direction X, and the second direction X can be arranged at a right angle with the first direction Z.

[0059] The battery module 11 can include a plurality of battery cells 110, the battery cells 110 can be square battery cells 110, and a plurality of battery cells 110 can be arranged in a third direction Y; wherein the third direction Y can be arranged at a right angle with the first direction Z.

[0060] Along the second direction X, both ends of the battery module 11 are provided with end plates 15, and a plurality of ventilation openings 151 are formed in the end plates 15, which penetrate the end plates 15 along the third direction Y. It can be understood that the ventilation openings 151 are designed to allow air or cooling gas to flow freely along the third direction Y, thereby effectively taking away the heat of the battery module 11, and keeping the working temperature of the battery module 11 within a safe range during high-power output or long-time work, avoiding performance degradation or thermal runaway caused by overheating.

[0061] Specifically, the battery pack 1 includes a plurality of first battery modules 111 and a second battery module 112, the plurality of first battery modules 111 are arranged at intervals along the first direction Z, and one first battery module 111 is arranged between two adjacent fourth liquid cooling plates 124. The second battery module 112 is arranged above the first battery module 111, and the second battery module 112 is arranged between the fourth liquid cooling plate 124 and the first liquid cooling plate 121. Adjacent two fourth liquid cooling plates 124 can be located at the top and bottom of the first battery module 111 respectively, realizing double-sided cooling of the first battery module 111. The fourth liquid cooling plate 124 and the first liquid cooling plate 121 can be located at the top and bottom of the second battery module 112 respectively, realizing double-sided cooling of the second battery module 112. This design enables the cooling liquid to effectively cover the entire surface of the first battery module 111 and the second battery module 112, thereby improving the uniformity and efficiency of heat dissipation, preventing overheating in local areas of the battery pack 1, and improving the overall thermal management capability.

[0062] It should be noted that the first joint pipe assembly 125 is arranged at one end of the plurality of fourth liquid cooling plates 124, which means that the first joint pipe assembly 125 is arranged at one end close to the third inlet 1241 of the fourth liquid cooling plate 124. The second joint pipe assembly 126 is arranged at the other end of the plurality of fourth liquid cooling plates 124, which means that the second joint pipe assembly 126 is arranged at one end close to the third outlet 1242 of the fourth liquid cooling plate 124.

[0063] It can be understood that the embodiment can realize layered cooling by arranging a plurality of fourth liquid cooling plates 124 along the first direction Z, and arranging the first liquid cooling plate 121 above the fourth liquid cooling plate 124, thereby achieving effective heat dissipation of the battery modules 11 at different heights in the battery pack 1. The first joint pipe assembly 125 connects the first inlet 1211, the first sub-inlet 1221, the second sub-inlet 1223, and the third inlet 1241. The second joint pipe assembly 126 connects the first outlet 1212, the first sub-outlet 1222, the second sub-outlet 1224, and the third outlet 1242, thereby connecting the plurality of fourth liquid cooling plates 124, the first liquid cooling plate 121, the second liquid cooling plate 122, and the third liquid cooling plate 123 in parallel, thereby improving the flow uniformity and temperature control ability of the cooling liquid.

[0064] In addition, the area of the first liquid cooling plate 121 is smaller than that of the fourth liquid cooling plate 124, which can effectively save the space inside the battery pack 1, and adapt to the arrangement in the multi-layer battery pack 1, especially in the case of height limitation in the first direction Z. The larger area of the fourth liquid cooling plate 124 can be used to cool the main area of the battery pack 1, and the smaller area of the first liquid cooling plate 121 can be used to cool the upper area of the battery pack 1. This design provides a more flexible temperature control scheme, which helps to achieve uniform temperature distribution and reduce the risk of local overheating.

[0065] At the same time, by arranging a plurality of fourth liquid cooling plates 124, the first liquid cooling plate 121, and the second liquid cooling plate 122 along the first direction Z, the close stacking between the cooling plates is avoided, the pipe arrangement is more flexible, the available space in the battery pack 1 is effectively utilized, and the complex pipe connection and layout pressure is reduced.

[0066] And, the first joint pipeline assembly 125 connects the first inlet 1211, the first sub-inlet 1221, the second sub-inlet 1223, and the third inlet 1241, and the second joint pipeline assembly 126 connects the first outlet 1212, the first sub-outlet 1222, the second sub-outlet 1224, and the third outlet 1242, so that the plurality of fourth liquid cooling plates 124, the first liquid cooling plate 121, and the second liquid cooling plate 122 form a layered cooling structure arranged in parallel, so that the liquid cooling module 12 can be applied to a more complex multi-layer battery module 11 stacking structure; in addition, the parallel design not only improves the cooling efficiency of the liquid cooling module 12, but also reduces the influence caused by the performance difference of the single-layer liquid cooling plate, ensures that the cooling liquid can flow smoothly through the multi-layer liquid cooling plate, and ensures the temperature consistency of the entire battery pack 1.

[0067] Please continue to combine Figure 1 to Figure 5 In an embodiment, the plurality of fourth liquid cooling plates 124, the first liquid cooling plate 121, and the second liquid cooling plate 122 are arranged in the first direction Z; the area of the second liquid cooling plate 122 is equal to the area of the first liquid cooling plate 121; the battery pack 1 includes a third battery module 113, and one of the third battery modules 113 is arranged between the first liquid cooling plate 121 and the second liquid cooling plate 122.

[0068] It can be understood that, by arranging the first liquid cooling plate 121 and the second liquid cooling plate 122 at the top and bottom of the third battery module 113 respectively, the double-sided cooling of the third battery module 113 is realized, so that the cooling liquid can effectively cover the entire surface of the third battery module 113, thereby improving the uniformity and efficiency of heat dissipation, preventing overheating phenomenon in the local area of the battery pack 1, and improving the overall thermal management capability.

[0069] Specifically, the battery pack 1 includes a third battery module 113, and one of the third battery modules 113 is arranged between the first liquid cooling plate 121 and the second liquid cooling plate 122. By arranging the first liquid cooling plate 121 and the second liquid cooling plate 122 at the top and bottom of the third battery module 113 respectively, the double-sided cooling of the third battery module 113 is realized, so that the cooling liquid can effectively cover the entire surface of the third battery module 113, thereby improving the uniformity and efficiency of heat dissipation, preventing overheating phenomenon in the local area of the battery pack 1, and improving the overall thermal management capability.

[0070] In addition, the plurality of first liquid cooling channels 12293 arranged in parallel enables the cooling liquid to pass through the liquid cooling plate more quickly, expands the cooling surface area of the second liquid cooling plate 122 in contact with the third battery module 113, and effectively improves the cooling efficiency; and since the plurality of first liquid cooling channels 12293 are arranged in parallel, the cooling liquid can be evenly distributed in each of the first liquid cooling channels 12293, thereby avoiding the phenomenon of local overheating or uneven cooling of the third battery module 113.

[0071] Please continue to combine Figure 1 to Figure 5 In an embodiment, the third liquid cooling plate 123 is arranged above the first liquid cooling plate 121, the third liquid cooling plate 123 and the fourth liquid cooling plate 124 are arranged at intervals, and the area of the third liquid cooling plate 123 can be equal to the area of the first liquid cooling plate 121; the battery pack 1 includes a fourth battery module 114, and one of the fourth battery modules 114 is arranged between the fourth liquid cooling plate 124 and the third liquid cooling plate 123. By arranging the third liquid cooling plate 123 and the fourth liquid cooling plate 124 at the top and bottom of the fourth battery module 114 respectively, double-sided cooling of the fourth battery module 114 is achieved, so that the cooling liquid can effectively cover the entire surface of the fourth battery module 114, thereby improving the uniformity and efficiency of heat dissipation, preventing local overheating in the battery pack 1, and improving the overall thermal management capability.

[0072] In addition, the plurality of second liquid cooling channels 1235 arranged in parallel enables the cooling liquid to pass through the liquid cooling plate more quickly, expands the cooling surface area of the third liquid cooling plate 123 in contact with the fourth battery module 114, and effectively improves the cooling efficiency; and since the plurality of second liquid cooling channels 1235 are arranged in parallel, the cooling liquid can be evenly distributed in each of the first liquid cooling channels 12293, thereby avoiding the phenomenon of local overheating or uneven cooling of the fourth battery module 114.

[0073] Please continue to combine Figure 1 In an embodiment, the third inlet 1241 and the third outlet 1242 can be located at the same end of the fourth liquid cooling plate 124, the first inlet 1211 and the first outlet 1212 can be located at the same end of the first liquid cooling plate 121, the first sub-inlet 1221, the first sub-outlet 1222, the second sub-inlet 1223, and the second sub-outlet 1224 can be located at the same end of the second liquid cooling plate 122, the second inlet 1231 and the second outlet 1232 can be located at the same end of the third liquid cooling plate 123, and the second inlet 1231 and the second outlet 1232 are located at the end of the third liquid cooling plate 123 close to the first liquid cooling plate 121.

[0074] Specifically, the third inlet 1241, the third outlet 1242, the first inlet 1211, the first outlet 1212, the first sub-inlet 1221, the first sub-outlet 1222, the second sub-inlet 1223, the second sub-outlet 1224, the first joint pipe assembly 125, and the second joint pipe assembly 126 are arranged at the same end of the liquid cooling module 12.

[0075] It can be understood that, due to the difference in height and spacing, different pipe routes may be required for each cooling plate in the multi-layer battery pack 1, and if the inlets and outlets and the pipe assemblies are dispersed at different ends, complex pipe crossing and routing problems will be caused; in the embodiment, all the inlets and outlets and the pipe assemblies are concentrated at the same end of the liquid cooling module 12, so that the pipes do not need to be extended or arranged from multiple directions during installation, the design of the pipes can be simply adjusted according to the position of each layer of cooling plates to adapt to different numbers of layers and cooling requirements, the compatibility of the liquid cooling module 12 is improved, the space occupation of the pipes in the liquid cooling module 12 is reduced, thereby realizing flexible layout of the pipes in the multi-layer battery pack 1 structure, solving the pipe arrangement problem when the space in the battery pack 1 is limited, and meeting the heat dissipation requirement of a large-capacity battery pack 1.

[0076] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 6 ; wherein, Figure 1 is a first structure schematic view of a first joint provided in the embodiment of the utility model.

[0077] In an embodiment, the first joint pipe assembly 125 includes a plurality of first joints 1251 in communication, one of the first joints 1251 is in communication with the third inlet 1241 of one of the fourth liquid cooling plates 124, and the first joint 1251 close to the first liquid cooling plate 121 side of the plurality of first joints 1251 is in communication with the first inlet 1211; the second joint pipe assembly 126 includes a plurality of second joints 1261 in communication, one of the second joints 1261 is in communication with the third outlet 1242 of one of the fourth liquid cooling plates 124, and the second joint 1261 close to the first liquid cooling plate 121 side of the plurality of second joints 1261 is in communication with the first outlet 1212.

[0078] It should be noted that the adjacent first joints 1251, the first joint 1251 and the third inlet 1241, the first joint 1251 and the first inlet 1211, the adjacent second joints 1261, the second joint 1261 and the third outlet 1242, and the second joint 1261 and the first outlet 1212 can be connected by pipelines.

[0079] Specifically, the first joint 1251 can be a tee joint, the first joint 1251 comprising a first opening 12511, a second opening 12512 and a third opening 12513 connected in communication, the first opening 12511 of one first joint 1251 being in communication with the third inlet 1241 of one fourth liquid cooling plate 124; along the first direction Z, in the adjacent two first joints 1251, the second opening 12512 of one first joint 1251 is in communication with the second opening 12512 or the third opening 12513 of the other first joint 1251, thereby realizing the communication of multiple first joints 1251.

[0080] It can be understood that the tee joint in the related art is usually assembled by multiple parts, and the sealing performance of the connection is easily affected by the installation precision and the use environment, which may cause leakage of the cooling liquid. In the embodiment, the first joint 1251 can be a tee joint, the first joint 1251 comprising a first opening 12511, a second opening 12512 and a third opening 12513 connected in communication, by reducing the volume of the connecting piece and optimizing the flow channel design, the expansion length and layout of the pipeline in the second direction X in the related art are reduced, thereby saving the internal space of the battery pack 1.

[0081] It should be noted that in the embodiment, the second direction X is the X direction in the Figure 1 second joint 1261 can also be a tee joint, and details are described above with respect to the first joint 1251, which will not be described herein.

[0082] It can be understood that, by arranging one first joint 1251 in communication with the third inlet 1241 of one fourth liquid cooling plate 124, the first joint 1251 close to the first liquid cooling plate 121 on one side of the plurality of first joints 1251 in communication with the first inlet 1211, one second joint 1261 in communication with the third outlet 1242 of one fourth liquid cooling plate 124, and the second joint 1261 close to the first liquid cooling plate 121 on one side of the plurality of second joints 1261 in communication with the first outlet 1212, the plurality of fourth liquid cooling plates 124 and the first liquid cooling plate 121 are arranged in parallel, each liquid cooling plate can obtain a relatively uniform cooling liquid flow, thereby ensuring that the cooling effect of the liquid cooling module 12 is more uniform, avoiding excessive local temperature difference, and thereby effectively improving the heat dissipation efficiency and temperature control performance of the liquid cooling module 12.

[0083] In addition, since the cooling liquid is uniformly dispersed into the plurality of liquid cooling plates through the first joint pipe assembly 125, the pressure drop of the liquid cooling module 12 as a whole can be reduced, so that the pipe does not need to be reduced in diameter or bent to maintain the flow rate, and the present embodiment allows the use of larger and straighter pipes to increase the flow rate and reduce the flow resistance; in addition, if the flow rate of a certain liquid cooling plate is too large, the inlet and outlet pipe diameters of the first joint 1251 can be adjusted for throttling control, thereby further optimizing the flow uniformity.

[0084] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 7 ; wherein, Figure 1 is a second structure diagram of the first joint provided by the embodiment of the utility model.

[0085] In an embodiment, the first joint pipe assembly 125 further comprises a liquid inlet joint 12510 connected to one of the plurality of first joints 1251, and the liquid inlet joint 12510 is the inlet end of the cooling medium; the second joint pipe assembly 126 further comprises a liquid outlet joint 12610 connected to one of the plurality of second joints 1261, and the liquid outlet joint 12610 is the outlet end of the cooling medium.

[0086] Since the liquid inlet joint 12510 can be connected with one of the plurality of first joints 1251, the flow direction of the cooling liquid can be adjusted according to actual needs, thereby improving the flexibility and adaptability of the liquid cooling module 12; meanwhile, by separately adjusting the position and size of the liquid inlet joint 12510, the cooling liquid can flow through each cold plate in an optimal path, adapt to different battery pack 1 structure requirements, and ensure more uniform flow distribution in the entire liquid cooling module 12.

[0087] Further, the liquid inlet joint 12510 and the first joint 1251 can be integrally formed; specifically, the liquid inlet joint 12510 and the first joint 1251 can be integrally formed by an injection molding process, thereby improving the overall sealing and connection reliability, thereby improving the efficiency of the cooling liquid flow and simplifying the assembly process.

[0088] It should be noted that in the present embodiment, the structure of the liquid outlet joint 12610 is the same as that of the liquid inlet joint 12510, that is, the liquid outlet joint 12610 can be connected with one of the plurality of second joints 1261, and the liquid outlet joint 12610 and the second joint 1261 can also be integrally formed by an injection molding process. For details, please refer to the description of the liquid inlet joint 12510 above, which will not be repeated here.

[0089] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 8 ; wherein, Figure 1 to Figure 8 is a structural diagram of a first connection joint provided by the embodiment of the utility model.

[0090] In an embodiment, the first joint pipe assembly 125 further comprises a first connection joint 1253, the first connection joint 1253 is arranged on the side of the first joint pipe assembly 125 away from the first liquid cooling plate 121, one end of the first connection joint 1253 is in communication with a third inlet 1241 of a fourth liquid cooling plate 124, and the other end of the first connection joint 1253 is connected with a first joint 1251; the second joint pipe assembly 126 further comprises a second connection joint 1263, the second connection joint 1263 is arranged on the side of the second joint pipe assembly 126 away from the first liquid cooling plate 121, one end of the second connection joint 1263 is in communication with a third outlet 1242 of a fourth liquid cooling plate 124, and the other end of the second connection joint 1263 is connected with a second joint 1261.

[0091] Specifically, a plurality of the fourth liquid cooling plates 124 are arranged at intervals along the first direction Z, and the first liquid cooling plate 121 is arranged above the fourth liquid cooling plates 124. Among the plurality of fourth liquid cooling plates 124, the fourth liquid cooling plate 124 away from the first liquid cooling plate 121 is in contact with the bottom plate 141141 of the battery pack 1 (not shown in the figure). The first connecting joint 1253 and the second connecting joint 1263 are arranged corresponding to the fourth liquid cooling plate 124 away from the first liquid cooling plate 121, that is, the first connecting joint 1253 and the second connecting joint 1263 are connected to the same fourth liquid cooling plate 124.

[0092] Further, the first connecting joint 1253 can be a two-way joint, which includes a fourth opening 12531 and a fifth opening 12532 connected in communication. The fourth opening 12531 of one first connecting joint 1253 is in communication with the third inlet 1241 of one fourth liquid cooling plate 124, and the fifth opening 12532 of one first connecting joint 1253 is connected to the second opening 12512 of the first joint 1251 or in communication with the third opening 12513.

[0093] It should be noted that in the present embodiment, the structure of the second connecting joint 1263 is the same as that of the first connecting joint 1253, that is, the second connecting joint 1263 can be a two-way joint, and specific details can be referred to the description of the first connecting joint 1253 above, which will not be repeated here.

[0094] It can be understood that in the present embodiment, one end of the first connecting joint 1253 is in communication with the third inlet 1241 of one fourth liquid cooling plate 124, the other end of the first connecting joint 1253 is connected to one first joint 1251, one end of the second connecting joint 1263 is in communication with the third outlet 1242 of one fourth liquid cooling plate 124, and the other end of the second connecting joint 1263 is connected to one second joint 1261. Thus, the connection between adjacent fourth liquid cooling plates 124 can adopt a relatively linear pipe layout, reducing the bending of the pipe and improving the efficiency and flow control of the cooling liquid flow.

[0095] Please continue to combine Figure 1 to Figure 8; In an embodiment, the first joint pipe assembly 125 comprises a third joint 1252 arranged between the first liquid cooling plate 121 and the second liquid cooling plate 122, the third joint 1252 being connected to the first sub-inlet 1221, the second sub-inlet 1223, the first inlet 1211 and the first joint 1251 respectively; the second joint pipe assembly 126 comprises a fourth joint 1262 arranged between the first liquid cooling plate 121 and the second liquid cooling plate 122, the fourth joint 1262 being connected to the first sub-outlet 1222, the second sub-outlet 1224, the first outlet 1212 and the second joint 1261 respectively.

[0096] Specifically, the third joint 1252 can be a tee joint, the third joint 1252 can be connected to the first sub-inlet 1221, the second sub-inlet 1223, the first inlet 1211 and the first joint 1251 by multiple pipes respectively; wherein the pipe connecting the third joint 1252 and the first sub-inlet 1221 can be a first branch pipe, the first branch pipe being connected to the third joint 1252, the first sub-inlet 1221 and the first inlet 1211 respectively, so as to realize the flow of liquid cooling liquid into the first liquid cooling plate 121 and the second liquid cooling plate 122 through the first joint 1251 and the third joint 1252.

[0097] The fourth joint 1262 can be a tee joint, the fourth joint 1262 can be connected to the first sub-outlet 1222, the second sub-outlet 1224, the first outlet 1212 and the second joint 1261 by multiple pipes respectively; wherein the pipe connecting the fourth joint 1262 and the first sub-outlet 1222 can be a second branch pipe, the second branch pipe being connected to the fourth joint 1262, the first sub-outlet 1222 and the first outlet 1212 respectively, so as to realize the flow of liquid cooling liquid out of the first liquid cooling plate 121 and the second liquid cooling plate 122 through the fourth joint 1262 and the second joint 1261.

[0098] It can be understood that, by arranging the third joint 1252 and the fourth joint 1262, the cooling liquid is reasonably distributed between the first liquid cooling plate 121 and the second liquid cooling plate 122, the connection of the multi-layer cooling plate is simplified, the problem of how to efficiently connect the cooling plate in the multi-layer structure is effectively solved, the use of additional pipes is reduced, and the complexity of the liquid cooling module 12 is reduced.

[0099] Further, the first joint pipe assembly 125 further comprises a first pipe 1254 arranged between the first liquid cooling plate 121 and the third liquid cooling plate 123, and the second joint pipe assembly 126 further comprises a second pipe 1264 arranged between the first liquid cooling plate 121 and the third liquid cooling plate 123; wherein the first pipe 1254 and the second pipe 1264 are arranged in a spaced manner.

[0100] The first liquid inlet flow channel 1227 is provided with a first through hole 1225 away from one side of the first sub-inlet 1221, the first liquid outlet flow channel 1228 is provided with a second through hole 1226 away from one side of the first sub-outlet 1222, one end of the first pipe 1254 is connected to the first through hole 1225, the other end of the first pipe 1254 extends from the first liquid inlet flow channel 1227 to the direction close to the second inlet 1231, and the other end of the first pipe 1254 is connected to the second inlet 1231; one end of the second pipe 1264 is connected to the second through hole 1226, the other end of the second pipe 1264 extends from the first liquid outlet flow channel 1228 to the direction close to the second outlet 1232, and the other end of the second pipe 1264 is connected to the second outlet 1232.

[0101] Specifically, the first pipe 1254 comprises a first straight segment 12541, a second straight segment 12542, a third straight segment 12543, a first bending segment 12544 and a second bending segment 12545; wherein one end of the first straight segment 12541 is in communication with the first liquid inlet flow channel 1227, the other end of the first straight segment 12541 extends from the second liquid cooling plate 122 to the direction close to the first liquid cooling plate 121, and is connected to one end of the first bending segment 12544; the other end of the first bending segment 12544 is connected to the second straight segment 12542, the other end of the second straight segment 12542 extends from the first liquid cooling plate 121 to the direction close to the third liquid cooling plate 123, and is connected to one end of the second bending segment 12545; the other end of the second bending segment 12545 is connected to one end of the third straight segment 12543, the other end of the third straight segment 12543 extends from the second bending segment 12545 to the direction close to the third liquid cooling plate 123, and is connected to the second inlet 1231.

[0102] It should be noted that the structure of the second pipe 1264 is the same as that of the first pipe 1254, and the structure of the first pipe 1254 has been described in detail in the embodiment, and thus will not be described here.

[0103] It can be understood that the embodiment simplifies the design and manufacturing process by adopting the first pipeline 1254 and the second pipeline 1264, facilitates standardized production, reduces manufacturing cost and maintenance difficulty, in addition, the unified pipeline structure can ensure the consistency of the flow characteristics of the cooling liquid in each part, and further improve the stability and cooling effect of the cooling system.

[0104] Please continue to combine Figure 1 to Figure 8 In an embodiment, the second battery module 112 and the third battery module 113 are stacked, the fourth battery module 114 is arranged in the same layer as the third battery module 113 and is spaced apart, a groove 13 is formed between the third battery module 113 and the fourth battery module 114, the first pipeline 1254 and the second pipeline 1264 are arranged between the fourth battery module 114 and the third battery module 113, and the first pipeline 1254 and the second pipeline 1264 extend along the side of the groove 13, so that the arrangement of the first pipeline 1254 and the second pipeline 1264 utilizes the unused gap space in the battery pack 1, improves the compactness of the overall layout, and avoids interference between the pipeline and other elements of the battery pack 1.

[0105] At the same time, by arranging the pipeline between adjacent battery modules 11, the cooling liquid is transmitted from the third liquid cooling plate 123 to the fourth liquid cooling plate 124, avoiding pipeline crossing problems and maintaining the simplicity and maintainability of the liquid cooling module 12.

[0106] Please continue to combine Figure 1 In an embodiment, the cooling module further comprises a plurality of quick connectors 127, one of the quick connectors 127 corresponds to one of the first inlets 1211, one of the quick connectors 127 corresponds to one of the first outlets 1212, one of the quick connectors 127 corresponds to one of the second inlets 1231, one of the quick connectors 127 corresponds to one of the second outlets 1232, one of the quick connectors 127 corresponds to one of the first sub-inlets 1221, one of the quick connectors 127 corresponds to one of the first sub-outlets 1222, one of the quick connectors 127 corresponds to one of the second sub-inlets 1223, one of the quick connectors 127 corresponds to one of the second sub-outlets 1224, one of the quick connectors 127 corresponds to one of the third inlets 1241, and one of the quick connectors 127 corresponds to one of the third outlets 1242.

[0107] Specifically, one of the first joints 1251 is communicated with the third inlet 1241 through one of the quick connection plugs 127, and one of the second joints 1261 is communicated with the third outlet 1242 through one of the quick connection plugs 127; one of the third joints 1252 is communicated with the first sub-inlet 1221 through one of the quick connection plugs 127, one of the third joints 1252 is communicated with the first sub-outlet 1222 through one of the quick connection plugs 127, and one of the third joints 1252 is communicated with the first inlet 1211 through one of the quick connection plugs 127; one of the fourth joints 1262 is communicated with the first sub-outlet 1222 through one of the quick connection plugs 127, one of the fourth joints 1262 is communicated with the second sub-outlet 1224 through one of the quick connection plugs 127, and one of the fourth joints 1262 is communicated with the first outlet 1212 through one of the quick connection plugs 127.

[0108] It can be understood that, by arranging the quick connection plugs 127, the embodiment simplifies the connection mode of the pipeline, avoids complicated threaded connections or other fixing modes in related designs, simplifies the installation process of the liquid cooling module 12, and also reduces the space requirement for pipeline connection and turning, so that the layout of the entire system is more compact, and especially for the cooling module designed for the multi-layer battery module 11, the layout space in the second direction X can be effectively saved, so that the design of the battery pack 1 is more flexible.

[0109] Please continue to combine Figure 2 , Figure 9 and Figure 9 ; wherein, ​ is a structural schematic diagram of a first liquid cooling plate provided by the embodiment of the utility model.

[0110] In an embodiment, the fourth liquid cooling plate 124 can be an extruded profile liquid cooling plate; it can be understood that, for a battery pack 1 with a multi-layer structure, a plurality of cooling plates are usually required to be arranged, and the extruded profile liquid cooling plate adopts an extrusion forming process, which has the characteristics of high efficiency and low cost, so that the first liquid cooling plate 121 can be quickly and mass-produced, thereby reducing the manufacturing cost of the liquid cooling module 12.

[0111] Specifically, the fourth liquid cooling plate 124 is internally provided with a fourth liquid inlet channel 1243, a fourth liquid outlet channel 1244, and a plurality of third liquid cooling channels 1245 arranged in series, one end of the fourth liquid inlet channel 1243 is connected with the third inlet 1241, the other end of the fourth liquid inlet channel 1243 is communicated with one end of the third liquid cooling channel 1245, the other end of the third liquid cooling channel 1245 is communicated with one end of the fourth liquid outlet channel 1244, and the other end of the fourth liquid outlet channel 1244 is connected with the third outlet 1242, so as to ensure that the cooling liquid can be uniformly distributed in the first liquid cooling plate 121, and the cooling effect of the entire liquid cooling module 12 is improved; meanwhile, the extruded profile liquid cooling plate can directly form the fourth liquid inlet channel 1243, the fourth liquid outlet channel 1244, and the third liquid cooling channel 1245 through the extrusion process, and the manufacturing cost of the first liquid cooling plate 121 is further reduced.

[0112] Specifically, the fourth liquid inlet channels 1243 of two adjacent fourth liquid cooling plates 124 are communicated, and the fourth liquid outlet channels 1244 of the two adjacent fourth liquid cooling plates 124 are communicated, so as to reduce the complex pipeline structure, make the installation process of the plurality of fourth liquid cooling plates 124 simpler, and reduce the installation cost and maintenance cost of the plurality of fourth liquid cooling plates 124.

[0113] Further, the fourth liquid inlet channel 1243, the fourth liquid outlet channel 1244, and the third liquid cooling channel 1245 are all linear channel structures; it can be understood that the linear channel structure can reduce the friction and resistance of the cooling liquid in the channel, ensure that the cooling liquid can smoothly pass through each channel, and make the cooling liquid flow quickly with small energy consumption, so as to improve the flow efficiency of the entire system; and the linear channel design simplifies the manufacturing process and reduces the processing difficulty and cost caused by the complex channel design.

[0114] The above describes the embodiments of the utility model in detail, and the principle and implementation mode of the utility model are described by applying specific examples; the above embodiment description is only used to help understand the method and core idea of the utility model; meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the utility model.

Claims

1. A liquid-cooled module, comprising: The liquid cooling module comprises: A second liquid cooling plate, which is internally provided with a flow channel; A third liquid cooling plate, which is spaced apart from the second liquid cooling plate, and is provided with a first cooling part, the first cooling part being in communication with the flow channel to guide the cooling liquid into and / or out of the first cooling part.

2. The liquid-cooled module of claim 1, wherein, The flow channel comprises a first liquid inlet flow channel and a first liquid outlet flow channel, and the second liquid cooling plate is further provided with a second cooling part between the first liquid inlet flow channel and the first liquid outlet flow channel, and the second liquid cooling plate comprises a first sub-inlet, a first sub-outlet, a second sub-inlet and a second sub-outlet; Wherein, one end of the second cooling part is connected with the second sub-inlet, and the other end of the second cooling part is connected with the second sub-outlet; one end of the first liquid inlet flow channel is connected with the first sub-inlet, and the other end of the first liquid inlet flow channel is connected with one end of the first cooling part; one end of the first liquid outlet flow channel is connected with the first sub-outlet, and the other end of the first liquid outlet flow channel is connected with the other end of the first cooling part.

3. The liquid-cooled module of claim 2, wherein, The second cooling part comprises a second liquid inlet flow channel, a second liquid outlet flow channel, and a plurality of first liquid cooling flow channels arranged in parallel; One end of the second liquid inlet flow channel is connected with the second sub-inlet, and the other end of the second liquid inlet flow channel is in communication with one end of the plurality of first liquid cooling flow channels; the other end of the plurality of first liquid cooling flow channels is in communication with one end of the second liquid outlet flow channel; and the other end of the first liquid outlet flow channel is connected with the second sub-outlet.

4. The liquid-cooled module of claim 3, wherein, The first liquid inlet flow channel is not in communication with the second liquid inlet flow channel, and / or the first liquid outlet flow channel is not in communication with the second liquid outlet flow channel.

5. The liquid-cooled module of any of claims 2-4, wherein, The third liquid cooling plate comprises a second inlet and a second outlet, and the first cooling part comprises a third liquid inlet flow channel, a third liquid outlet flow channel, and a plurality of second liquid cooling flow channels arranged in parallel; Wherein, one end of the third liquid inlet flow channel is connected with the second inlet, and the other end of the third liquid inlet flow channel is in communication with one end of the plurality of second liquid cooling flow channels; the other end of the plurality of second liquid cooling flow channels is in communication with one end of the third liquid outlet flow channel; and the other end of the third liquid outlet flow channel is connected with the second outlet.

6. The liquid-cooled module of claim 5, wherein, The other end of the first liquid inlet flow channel is connected with the second inlet, and the other end of the first liquid outlet flow channel is connected with the second outlet.

7. The liquid-cooled module of claim 5, wherein, The first liquid inlet flow channel, the first liquid outlet flow channel, the third liquid inlet flow channel and the third liquid outlet flow channel are all straight line type flow channel structures.

8. The liquid-cooled module of claim 5, wherein, The liquid cooling module further comprises: A first liquid cooling plate, which is arranged below the second liquid cooling plate, and is arranged in the same layer and spaced apart from the third liquid cooling plate; A first joint pipe assembly, which is arranged at one end of the plurality of first liquid cooling plates; A second joint pipe assembly, which is arranged at the other end of the plurality of first liquid cooling plates; Wherein, the first liquid cooling plate comprises a first inlet and a first outlet, the first joint pipe assembly connects the first inlet, the first sub-inlet and the second sub-inlet, and the second joint pipe assembly connects the first outlet, the first sub-outlet and the second sub-outlet.

9. The liquid-cooled module of claim 8, wherein, The liquid cooling module further comprises: A plurality of fourth liquid cooling plates are arranged on the side of the first liquid cooling plate away from the second liquid cooling plate, and the plurality of fourth liquid cooling plates are arranged at intervals along the first direction. The fourth liquid cooling plate comprises a third inlet and a third outlet. The first joint pipe assembly is connected to the third inlet, and the second joint pipe assembly is connected to the third outlet.

10. The liquid-cooled module of claim 9, wherein, The first joint pipe assembly comprises a plurality of first joints in communication. One of the first joints is in communication with the third inlet of one of the fourth liquid cooling plates. The first joint near the first liquid cooling plate among the plurality of first joints is in communication with the first inlet. The second joint pipe assembly comprises a plurality of second joints in communication. One of the second joints is in communication with the third outlet of one of the fourth liquid cooling plates. The second joint near the first liquid cooling plate among the plurality of second joints is in communication with the first outlet.

11. The liquid-cooled module of claim 10, wherein, The first joint pipe assembly comprises a third joint arranged between the first liquid cooling plate and the second liquid cooling plate. The third joint is connected to the first sub-inlet, the second sub-inlet, the first inlet and the first joint respectively. The second joint pipe assembly comprises a fourth joint arranged between the first liquid cooling plate and the second liquid cooling plate. The fourth joint is connected to the first sub-outlet, the second sub-outlet, the first outlet and the second joint respectively.

12. The liquid-cooled module of claim 9, wherein, The fourth liquid cooling plate is provided with a fourth liquid inlet channel, a fourth liquid outlet channel, and a plurality of third liquid cooling channels arranged in series. One end of the fourth liquid inlet channel is connected to the third inlet. The other end of the fourth liquid inlet channel is in communication with one end of the third liquid cooling channel. The other end of the third liquid cooling channel is in communication with one end of the fourth liquid outlet channel. The other end of the fourth liquid outlet channel is connected to the third outlet. The fourth liquid inlet channels of adjacent first liquid cooling plates are in communication, and the fourth liquid outlet channels of adjacent first liquid cooling plates are in communication.

13. The liquid-cooled module of claim 8, wherein, The first joint pipe assembly further comprises a first pipe arranged between the second liquid cooling plate and the third liquid cooling plate. One end of the first pipe is in communication with the first liquid inlet channel. The other end of the first pipe extends from the second liquid cooling plate towards the first liquid cooling plate and is connected to the second inlet after being bent.

14. The liquid-cooled module of claim 13, wherein, The first pipe comprises a first straight section, a second straight section, a third straight section, a first bending section and a second bending section. One end of the first straight section is in communication with the first liquid inlet channel. The other end of the first straight section extends from the second liquid cooling plate towards the first liquid cooling plate and is connected to one end of the first bending section. The other end of the first bending section is connected to the second straight section. The other end of the second straight section extends from the first liquid cooling plate towards the third liquid cooling plate and is connected to one end of the second bending section. The other end of the second bending section is connected to one end of the third straight section. The other end of the third straight section extends from the second bending section towards the third liquid cooling plate and is connected to the second inlet.

15. A battery pack, characterized by The liquid cooling module as claimed in any one of claims 1 to 14, wherein the battery module is disposed between adjacent liquid cooling plates.

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