Liquid cooling structure and battery cell module thereof

Abstract

The utility model provides a liquid cooling structure and a battery cell module thereof. The liquid cooling structure comprises a plurality of liquid cooling plate assemblies arranged in the first direction, a containing space used for containing a battery cell is formed between every two adjacent liquid cooling plate assemblies, and each liquid cooling plate assembly comprises a first liquid cooling plate and a second liquid cooling plate which are detachably connected. The liquid cooling structure comprises the multiple liquid cooling plate assemblies arranged side by side, the length of each liquid cooling plate assembly can be shortened, then the flow resistance of cooling water in the liquid cooling plate assemblies is reduced, and the problem that the temperature difference between single-row battery cells is large is solved; in addition, each liquid cooling plate assembly comprises a first liquid cooling plate and a second liquid cooling plate which are detachably connected, and the liquid cooling plate assembly is divided into the first liquid cooling plate and the second liquid cooling plate, so that the length of the single first liquid cooling plate and the second liquid cooling plate can be further shortened, and the situation that the length of the single liquid cooling plate is too long and the product quality is influenced is prevented. The flow resistance of cooling water in the liquid cooling plate and the temperature difference between the single row of battery cells are reduced, and meanwhile, the problem that the liquid cooling plate is deformed due to overlong length is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery cell, concretely relates to a liquid cooling structure and battery cell module thereof. BACKGROUND

[0002] In the related art, the cooling of cylindrical battery cells is mostly achieved by using liquid cooling plates to cool the sides. Each row of cylindrical battery cells is cooled by a liquid cooling plate, which has a liquid channel inside for the flow of liquid. One end of the liquid cooling plate is provided with a water inlet, and the other end is provided with a water outlet. The cooling water enters from the water inlet, flows through the liquid channel, and is discharged through the water outlet.

[0003] As the number of cylindrical battery cells in each row increases, the length of the single liquid cooling plate also increases, resulting in an excessively long liquid cooling plate. The excessively long liquid cooling plate can cause an increase in internal flow resistance, a large temperature difference between single-row battery cells, and deformation of the liquid cooling plate. SUMMARY

[0004] The embodiments of the utility model provide a liquid cooling structure and battery cell module thereof, which can solve the technical problems of an excessively long liquid cooling plate causing an increase in internal flow resistance, a large temperature difference between single-row battery cells, and deformation of the liquid cooling plate.

[0005] In a first aspect, the embodiments of the utility model provide a liquid cooling structure, comprising:

[0006] A plurality of liquid cooling plate assemblies arranged along a first direction, an accommodation space for accommodating battery cells is formed between two adjacent liquid cooling plate assemblies, and each liquid cooling plate assembly comprises a first liquid cooling plate and a second liquid cooling plate that are detachably connected.

[0007] In an embodiment, the first liquid cooling plate and the second liquid cooling plate are arranged along a second direction, the first liquid cooling plate has a first liquid cooling channel, the second liquid cooling plate has a second liquid cooling channel, the first liquid cooling channel and the second liquid cooling channel are isolated from each other, and the second direction is perpendicular to the first direction.

[0008] In each liquid cooling plate assembly, the first liquid cooling plate and the second liquid cooling plate are connected in parallel.

[0009] In an embodiment, each liquid cooling plate assembly further comprises a flow divider, and the first liquid cooling plate, the flow divider, and the second liquid cooling plate are connected in sequence.

[0010] The flow divider is in communication with the first liquid cooling plate and the second liquid cooling plate, respectively, so that the cooling water can enter the first liquid cooling plate and the second liquid cooling plate simultaneously through the flow divider; or

[0011] The flow divider separates the first liquid cooling plate and the second liquid cooling plate.

[0012] In an embodiment, the flow distributor comprises a water inlet chamber and a water outlet chamber separated from each other;

[0013] The first liquid cooling plate comprises a first water inlet channel and a first water outlet channel separated from each other;

[0014] The second liquid cooling plate comprises a second water inlet channel and a second water outlet channel separated from each other;

[0015] The water inlet chamber is in communication with the first water inlet channel and the second water inlet channel respectively, and the water outlet chamber is in communication with the first water outlet channel and the second water outlet channel respectively.

[0016] In an embodiment, each liquid cooling plate assembly further comprises two flow collectors, one of the two flow collectors is connected to the first liquid cooling plate away from the flow distributor, and the other is connected to the second liquid cooling plate away from the flow distributor, and each flow collector has a first water return cavity;

[0017] The first water inlet channel is in communication with the first water outlet channel through the corresponding first water return cavity;

[0018] The second water inlet channel is in communication with the second water outlet channel through the corresponding first water return cavity.

[0019] In an embodiment, the liquid cooling structure further comprises a pipeline assembly, the pipeline assembly comprises a water inlet branch pipe and a water outlet branch pipe extending along the first direction;

[0020] Two adjacent water inlet chambers are in communication through the water inlet branch pipe;

[0021] Two adjacent water outlet chambers are in communication through the water outlet branch pipe.

[0022] In an embodiment, the pipeline assembly further comprises a first sealing pipe, the water inlet chamber is in communication with the adjacent water inlet branch pipe through the first sealing pipe, one end of the first sealing pipe is sealingly connected to the adjacent water inlet chamber, and the other end is sealingly connected to the adjacent water inlet branch pipe; and / or

[0023] The pipeline assembly further comprises a second sealing pipe, the water outlet chamber is in communication with the adjacent water outlet branch pipe through the second sealing pipe, one end of the second sealing pipe is sealingly connected to the adjacent water outlet chamber, and the other end is sealingly connected to the adjacent water outlet branch pipe.

[0024] In an embodiment, the flow distributor comprises a second water return cavity and a third water return cavity separated from each other;

[0025] The first liquid cooling plate comprises a first water inlet channel and a first water outlet channel separated from each other;

[0026] The second liquid cooling plate comprises a second water inlet channel and a second water outlet channel which are separated from each other;

[0027] The first water inlet channel is connected with the first water outlet channel through the second water return cavity;

[0028] The second water inlet channel is connected with the second water outlet channel through the third water return cavity.

[0029] In an embodiment, each liquid cooling plate assembly further comprises two flow dividing members, one of the two flow dividing members is connected to the first liquid cooling plate away from the flow divider, and the other is connected to the second liquid cooling plate away from the flow divider, each flow dividing member has a liquid inlet compartment and a liquid outlet compartment which are separated from each other;

[0030] The first water inlet channel and the first water outlet channel are respectively connected with the corresponding liquid inlet compartment and liquid outlet compartment;

[0031] The second water inlet channel and the second water outlet channel are respectively connected with the corresponding liquid inlet compartment and liquid outlet compartment.

[0032] In an embodiment, the liquid cooling structure further comprises a pipeline assembly, the pipeline assembly comprises a water inlet sub-pipe and a water outlet sub-pipe extending along the first direction;

[0033] The adjacent two liquid inlet compartments are connected through the water inlet sub-pipe;

[0034] The adjacent two liquid outlet compartments are connected through the water outlet sub-pipe.

[0035] In an embodiment, the pipeline assembly further comprises a first sealing pipe, the liquid inlet compartment is connected with the adjacent water inlet sub-pipe through the first sealing pipe, one end of the first sealing pipe is sealingly connected with the adjacent liquid inlet compartment, and the other end is sealingly connected with the adjacent water inlet sub-pipe; and / or

[0036] The pipeline assembly further comprises a second sealing pipe, the liquid outlet compartment is connected with the adjacent water outlet sub-pipe through the second sealing pipe, one end of the second sealing pipe is sealingly connected with the adjacent liquid outlet compartment, and the other end is sealingly connected with the adjacent water outlet sub-pipe.

[0037] In a second aspect, the embodiments of the utility model provide a battery cell module, comprising the liquid cooling structure.

[0038] The embodiments of the utility model have the advantages of:

[0039] The liquid cooling structure in the embodiment of the utility model, the liquid cooling plate assembly is arranged in parallel, the accommodating space for accommodating the battery cell is formed between the two adjacent liquid cooling plate assemblies, the external cooling water can flow into the liquid cooling plate assembly and cool and radiate the battery cell in the accommodating space, in the embodiment, on the one hand, compared with the long "S" shape liquid cooling plate, the liquid cooling plate assembly is arranged in parallel, the length of each liquid cooling plate assembly can be shortened, the flow resistance of the cooling water in the liquid cooling plate assembly is reduced, the problem of large temperature difference between the single row battery cells is improved, on the other hand, the first liquid cooling plate and the second liquid cooling plate are detachably connected, the liquid cooling plate assembly is divided into the first liquid cooling plate and the second liquid cooling plate, the length of the first liquid cooling plate and the second liquid cooling plate can be further shortened, the length of the single liquid cooling plate is prevented from being too long, the flow resistance of the cooling water in the liquid cooling plate and the temperature difference between the single row battery cells are reduced, and the problem of deformation of the liquid cooling plate due to the length being too long is improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, 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 the person skilled in the art.

[0041] Figure 1 It is the three-dimensional schematic view of the liquid cooling structure provided by the embodiment of the utility model;

[0042] Figure 2 It is the explosion schematic view of the liquid cooling plate assembly provided by the embodiment of the utility model;

[0043] Figure 3 It is the cross-sectional schematic view of the shunt provided by the embodiment of the utility model;

[0044] Figure 4 It is the cross-sectional schematic view of the liquid cooling structure provided by the embodiment of the utility model;

[0045] Figure 5 It is the local enlarged view of A of the utility model Figure 4

[0046] Figure 6 It is the three-dimensional schematic view of the liquid cooling structure provided by another embodiment of the utility model;

[0047] Figure 7 It is the explosion schematic view of the second liquid cooling plate and the current collector provided by another embodiment of the utility model;

[0048] Figure 8 ​is a cross section schematic view of the liquid cooling structure provided by another embodiment of the utility model.

[0049] Figure 9 is the utility model Figure 8 B is the local enlarged view of.

[0050] Reference signs:

[0051] 100, liquid cooling structure;1, liquid cooling plate assembly;11, first liquid cooling plate;111, first liquid cooling flow channel;1111, first water inlet channel;1112, first water outlet channel;1113, first liquid inlet;1114, first liquid outlet;1115, first backwater opening;1116, first liquid outlet;12, second liquid cooling plate;121, second liquid cooling flow channel;1211, second water inlet channel;1212, second water outlet channel;1213, second liquid inlet;1214, second liquid outlet;1215, second backwater opening;1216, second liquid outlet;13, flow collecting piece;131, first backwater cavity;14, flow dividing piece;141, liquid inlet compartment;142, liquid outlet compartment;2, pipeline assembly;21, water inlet branch pipe;22, water outlet branch pipe;23, flow dividing body;231, water inlet compartment;2311, first through hole;232, water outlet compartment;2321, second through hole;233, second backwater cavity;234, third backwater cavity;24, first sealing pipe;25, second sealing pipe;26, total water inlet pipe;261, first water inlet branch pipe;262, second water inlet branch pipe;27, total water outlet pipe;271, first water outlet branch pipe;272, second water outlet branch pipe. Specific implementation

[0052] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 other embodiments obtained by those 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 implementation described herein is only used for illustrating and explaining the utility model, and is not used for limiting the utility model. In the utility model, the orientation words such as 'up' and 'down' are usually 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.

[0053] Please refer to Figure 1 and Figure 6The liquid cooling structure 100 includes a plurality of liquid cooling plate assemblies 1 arranged along a first direction. An accommodation space for accommodating the battery cell is formed between two adjacent liquid cooling plate assemblies 1. The battery cell is in contact with the liquid cooling plate assembly 1. External cooling water can flow into the liquid cooling plate assembly 1 and cool the battery cell in the accommodation space. In this embodiment, on the one hand, compared with using a long "S" shaped liquid cooling plate to cool the battery cell, the plurality of liquid cooling plate assemblies 1 arranged side by side can shorten the length of each liquid cooling plate assembly 1, thereby reducing the flow resistance of the cooling water in the liquid cooling plate assembly 1 and improving the problem of large temperature difference between the single-row battery cells. On the other hand, each liquid cooling plate assembly 1 includes a first liquid cooling plate 11 and a second liquid cooling plate 12 connected detachably. Splitting the liquid cooling plate assembly 1 into the first liquid cooling plate 11 and the second liquid cooling plate 12 can further shorten the length of the single first liquid cooling plate 11 and the second liquid cooling plate 12, prevent the length of the single liquid cooling plate from being too long, reduce the flow resistance of the cooling water in the liquid cooling plate and the temperature difference between the single-row battery cells, and improve the problem of deformation of the liquid cooling plate due to the length being too long.

[0054] In this embodiment, the first direction can be the front-back direction or the left-right direction, which is not limited herein. The connection mode between the first liquid cooling plate 11 and the second liquid cooling plate 12 is not limited, and the first liquid cooling plate 11 and the second liquid cooling plate 12 can be connected by fasteners, buckling, shunt, and current collector. The shape of the first liquid cooling plate 11 and the second liquid cooling plate 12 is not limited, and the shape of the first liquid cooling plate 11 and the second liquid cooling plate 12 can be the same or different. The first liquid cooling plate 11 and the second liquid cooling plate 12 can be serpentine, U-shaped, linear, or other shapes. Preferably, the first liquid cooling plate 11 and the second liquid cooling plate 12 are serpentine liquid cooling plates with the same structure. The serpentine liquid cooling plate can increase the contact area between the liquid cooling plate and the battery cell and improve the heat dissipation efficiency.

[0055] In an embodiment, referring to Figure 2The first liquid cooling plate 11 and the second liquid cooling plate 12 are arranged along a second direction, the first liquid cooling plate 11 has a first liquid cooling flow channel 111, the second liquid cooling plate 12 has a second liquid cooling flow channel 121, the first liquid cooling flow channel 111 and the second liquid cooling flow channel 121 are isolated from each other, and the second direction is perpendicular to the first direction; in each liquid cooling plate assembly 1, the first liquid cooling plate 11 and the second liquid cooling plate 12 are connected in series. In the embodiment, the first liquid cooling flow channel 111 and the second liquid cooling flow channel 121 are isolated from each other, which can ensure that the first liquid cooling plate 11 and the second liquid cooling plate 12 independently adjust the temperature of the battery cell and do not affect each other, improve the effect of uniform heat dissipation of the battery cell, and reduce the temperature difference between the battery cells; in addition, the first liquid cooling plate 11 and the second liquid cooling plate 12 are connected in series, and in the embodiment, the first liquid cooling plate 11 and the second liquid cooling plate 12 are connected in series, which means that the length of the first liquid cooling flow channel 111 and the second liquid cooling flow channel 121 is equal or similar, so as to realize uniform distribution of water flow in the first liquid cooling plate 11 and the second liquid cooling plate 12 and reduce the water resistance difference, which can reduce the pressure loss of the liquid cooling structure 100 and reduce the energy consumption of the liquid cooling structure 100.

[0056] In an embodiment, referring to Figure 6 Each liquid cooling plate assembly further comprises a distribution body 23, the first liquid cooling plate 11, the distribution body 23 and the second liquid cooling plate 12 are connected in sequence; the distribution body 23 is in communication with the first liquid cooling plate 11 and the second liquid cooling plate 12 respectively, so that the cooling water can enter the first liquid cooling plate 11 and the second liquid cooling plate 12 simultaneously through the distribution body 23. In the embodiment, the cooling water can enter the first liquid cooling plate 11 and the second liquid cooling plate 12 simultaneously through the distribution body 23, which can save the number of distribution bodies 23, save material cost and installation cost, and improve the structural compactness of the liquid cooling structure 100. In the embodiment, the connection relationship between the first liquid cooling plate 11, the second liquid cooling plate 12 and the distribution body 23 is not limited, and the first liquid cooling plate 11 and the second liquid cooling plate 12 can be connected with the distribution body 23 respectively by plug-in, buckle connection, screw connection, welding and the like.

[0057] In an embodiment, referring to Figure 2 The first liquid cooling flow channel 111 comprises a first water inlet passage 1111 and a first water outlet passage 1112 which are separated from each other, the first water inlet passage 1111 has a first liquid inlet 1113 and a first liquid outlet 1114, the first water outlet passage 1112 has a first water return port 1115 and a first liquid outlet 1116, and the first liquid outlet 1114 is in communication with the first water return port 1115. In the embodiment, the first water inlet passage 1111 and the first water outlet passage 1112 can be arranged in an up-down or left-right manner, which is not limited herein.

[0058] In an embodiment, referring to Figure 2The second liquid cooling channel 121 comprises a second water inlet passage 1211 and a second water outlet passage 1212 which are separated from each other. The second water inlet passage 1211 has a second water inlet port 1213 and a second water outlet port 1214. The second water outlet passage 1212 has a second water return port 1215 and a second water outlet port 1216. The second water outlet port 1214 is in communication with the second water return port 1215. In the embodiment, the second water inlet passage 1211 and the second water outlet passage 1212 can be arranged in an up-down manner or in a left-right manner, which is not limited herein.

[0059] In an embodiment, the flow distributor 23 comprises a water inlet chamber 231 and a water outlet chamber 232 which are separated from each other. The water inlet chamber 231 is in communication with the first water inlet passage 1111 and the second water inlet passage 1211 respectively. The water outlet chamber 232 is in communication with the first water outlet passage 1112 and the second water outlet passage 1212 respectively. Specifically, after the cooling water enters the water inlet chamber 231, the cooling water can flow into the first water inlet passage 1111 and the second water inlet passage 1211 through the first water inlet port 1113 and the second water inlet port 1213 respectively. The water in the first water inlet passage 1111 flows into the first water outlet passage 1112 through the first water outlet port 1114 and the first water return port 1115. The water in the first water outlet passage 1112 flows into the water outlet chamber 232. The water in the second water inlet passage 1211 flows into the second water outlet passage 1212 through the second water outlet port 1214 and the second water return port 1215. The water in the second water outlet passage 1212 flows into the water outlet chamber 232.

[0060] In an embodiment, referring to Figure 6 and Figure 7 Each liquid cooling plate assembly 1 further comprises two flow collectors 13. One of the two flow collectors 13 is connected to one end of the first liquid cooling plate 11 away from the flow distributor 23. The other flow collector 13 is connected to one end of the second liquid cooling plate 12 away from the flow distributor 23. Each flow collector 13 has a first water return cavity 131. The first water outlet port 1114 is in communication with the first water return port 1115 through the corresponding first water return cavity 131. The second water outlet port 1214 is in communication with the second water return port 1215 through the corresponding first water return cavity 131.

[0061] In the embodiment, the flow collector 13 connected to the first liquid cooling plate 11 can communicate the first water inlet passage 1111 and the first water outlet passage 1112. Specifically, after the cooling water enters the first water inlet passage 1111, the cooling water flows into the first water return cavity 131 from the first water outlet port 1114. The cooling water in the first water return cavity 131 flows into the first water outlet passage 1112 through the first water return port 1115.

[0062] In the embodiment, the current collector 13 connected with the second liquid cooling plate 12 can communicate the second water inlet channel 1211 and the second water outlet channel 1212. Specifically, the cooling water enters the second water inlet channel 1211, flows into the first water return cavity 131 from the second water outlet 1214, and then flows into the second water outlet channel 1212 from the second water return port 1215.

[0063] In an embodiment, referring to Figures 6 to 9 The liquid cooling structure 100 further comprises a pipeline assembly 2, which comprises water inlet sub-pipes 21 and water outlet sub-pipes 22 extending along the first direction; two adjacent water inlet chambers 231 are communicated through the water inlet sub-pipes 21; and two adjacent water outlet chambers 232 are communicated through the water outlet sub-pipes 22. Specifically, the cooling water enters the water inlet sub-pipes 21, flows into the water inlet chambers 231 through the water inlet sub-pipes 21, and then flows into the liquid cooling plate assembly 1, thereby achieving water supply to the liquid cooling plate assembly 1; the cooling water in the liquid cooling plate assembly 1 can enter the water outlet chambers 232, and then flow into the water outlet sub-pipes 22, and finally be discharged by the water outlet sub-pipes 22. In the embodiment, the water inlet sub-pipes 21 and the water outlet sub-pipes 22 are connected through the distribution body 23, which can improve the stability of the pipeline assembly 2. In addition, the water inlet sub-pipes 21 are divided into multiple parts, and the water outlet sub-pipes 22 are divided into multiple parts, which can shorten the length of each water inlet sub-pipe 21 and water outlet sub-pipe 22, reduce the problem of deformation of the water inlet sub-pipes 21 and the water outlet sub-pipes 22, and facilitate the maintenance and replacement of each water inlet sub-pipe 21 and water outlet sub-pipe 22.

[0064] In the embodiment, the positional relationship between the water inlet sub-pipes 21 and the water outlet sub-pipes 22 is not limited, and the water inlet sub-pipes 21 and the water outlet sub-pipes 22 can be arranged side by side or spaced apart in an up-down direction. The water inlet sub-pipes 21 can supply water to multiple groups of liquid cooling plate assemblies 1 at the same time, and the multiple groups of liquid cooling plate assemblies 1 can simultaneously discharge the cooling water into the water outlet sub-pipes 22, which can save the number of pipelines, save material and installation costs, and improve the structural compactness of the liquid cooling structure 100.

[0065] In the embodiment, the connection mode between the water inlet sub-pipes 21 and the water inlet chambers 231 is not limited, and the water inlet sub-pipes 21 and the water inlet chambers 231 can be detachably connected or integrally connected, which is not limited herein. The connection mode between the water outlet sub-pipes 22 and the water outlet chambers 232 is not limited, and the water outlet sub-pipes 22 and the water outlet chambers 232 can be detachably connected or integrally connected, which is not limited herein. The types of the water inlet sub-pipes 21 and the water outlet sub-pipes 22 are not limited, and the water inlet sub-pipes 21 and the water outlet sub-pipes 22 can be metal pipes, corrugated pipes, or other types of connecting pipes.

[0066] In an embodiment, referring to Figure 9The pipeline assembly 2 further comprises a first sealing pipe 24. The water inlet chamber 231 is in communication with the adjacent water inlet branch pipe 21 through the first sealing pipe 24. One end of the first sealing pipe 24 is sealingly connected to the water inlet chamber 231, and the other end is sealingly connected to the adjacent water inlet branch pipe 21. The first sealing pipe 24 can seal the connection gap between the water inlet chamber 231 and the water inlet branch pipe 21, thereby improving the sealing performance of the pipeline assembly 2.

[0067] In a specific embodiment, the water inlet chamber 231 is provided with a first through hole 2311 in the chamber wall. One end of the first sealing pipe 24 extends into the first through hole 2311 and sealingly contacts the hole wall of the first through hole 2311. The other end of the first sealing pipe 24 extends into the water inlet branch pipe 21 and sealingly contacts the pipe wall of the water inlet branch pipe 21. Alternatively, the water inlet chamber 231 is provided with a first through hole 2311 in the chamber wall, which is in communication with the first sealing pipe 24. The first sealing pipe 24 is integrally formed with the water inlet chamber 231. One end of the first sealing pipe 24 extends into the water inlet branch pipe 21 and sealingly contacts the pipe wall of the water inlet branch pipe 21.

[0068] In an embodiment, referring to Figure 9 The pipeline assembly 2 further comprises a second sealing pipe 25. The water outlet chamber 232 is in communication with the adjacent water outlet branch pipe 22 through the second sealing pipe 25. One end of the second sealing pipe 25 is sealingly connected to the water outlet chamber 232, and the other end is sealingly connected to the adjacent water outlet branch pipe 22. The second sealing pipe 25 can seal the connection gap between the water outlet chamber 232 and the water outlet branch pipe 22, thereby improving the sealing performance of the pipeline assembly 2.

[0069] In a specific embodiment, the water outlet chamber 232 is provided with a second through hole 2321 in the chamber wall. One end of the second sealing pipe 25 extends into the second through hole 2321 and sealingly contacts the hole wall of the second through hole 2321. The other end of the second sealing pipe 25 extends into the water outlet branch pipe 22 and sealingly contacts the pipe wall of the water outlet branch pipe 22. Alternatively, the water outlet chamber 232 is provided with a second through hole 2321 in the chamber wall, which is in communication with the second sealing pipe 25. The second sealing pipe 25 is integrally formed with the water outlet chamber 232. One end of the second sealing pipe 25 extends into the water outlet branch pipe 22 and sealingly contacts the pipe wall of the water outlet branch pipe 22.

[0070] In an embodiment, referring to Figure 6The liquid cooling structure 100 further comprises a total water inlet pipe 26 and a total water outlet pipe 27, the total water inlet pipe 26 is connected with one end of the water inlet branch pipe 21, the total water outlet pipe 27 is connected with the end of the water outlet branch pipe 22 away from the total water inlet pipe 26, the total water inlet pipe 26, the total water outlet pipe 27, the water inlet branch pipe 21, the water outlet branch pipe 22 and the flow divider 23 are arranged in the middle of the liquid cooling structure 100, each flow divider 23 is located between the first liquid cooling plate 11 and the second liquid cooling plate 12 of the same liquid cooling plate assembly 1, the first liquid cooling plate 11, the flow divider 23 and the second liquid cooling plate 12 are connected in sequence, the water inlet chamber 231 is in communication with the first liquid inlet 1113 and the second liquid inlet 1213 at the same time, and the water outlet chamber 232 is in communication with the first liquid outlet 1116 and the second liquid outlet 1216 at the same time. Specifically, after the cooling water in the water inlet branch pipe 21 enters the water inlet chamber 231, the cooling water in the water inlet chamber 231 enters the first water inlet channel 1111 and the second water inlet channel 1211 on the two sides at the same time through the first liquid inlet 1113 and the second liquid inlet 1213, after the cooling water flows through the first water inlet channel 1111 and the second water inlet channel 1211, the cooling water flows into the water outlet chamber 232 through the first liquid outlet 1116 and the second liquid outlet 1216 respectively, and the cooling water in the water outlet chamber 232 is discharged through the water outlet branch pipe 22. In the embodiment, the water inlet branch pipe 21 and the water outlet branch pipe 22 are arranged in the middle of the liquid cooling structure 100, so that the length of the pipe assembly 2 can be simplified, and the material cost can be saved.

[0071] In an embodiment, referring to Figure 1 Each liquid cooling plate assembly further comprises a flow divider 23, the first liquid cooling plate 11, the flow divider 23 and the second liquid cooling plate 12 are connected in sequence, and the flow divider 23 separates the first liquid cooling plate 11 and the second liquid cooling plate 12.

[0072] In an embodiment, referring to Figure 2 and Figure 3The shunt 23 includes a second return water cavity 233 and a third return water cavity 234 which are separated from each other, the first water inlet channel 1111 is in communication with the first water outlet channel 1112 through the second return water cavity 233, and the second water inlet channel 1211 is in communication with the second water outlet channel 1212 through the third return water cavity 234. Specifically, the first liquid inlet 1113 is in communication with the corresponding water inlet chamber 231, the first liquid outlet 1114 is in communication with the first liquid outlet 1115 through the second return water cavity 233, the first liquid outlet 1116 is in communication with the corresponding water outlet chamber 232, the second liquid inlet 1213 is in communication with the corresponding water inlet chamber 231, the second liquid outlet 1214 is in communication with the second liquid outlet 1215 through the third return water cavity 234, and the second liquid outlet 1216 is in communication with the corresponding water outlet chamber 232. Specifically, the cooling water enters the first water inlet channel 1111, flows into the second return water cavity 233 from the first liquid outlet 1114, and then the cooling water in the second return water cavity 233 flows into the first water outlet channel 1112 through the first liquid outlet 1115; the cooling water enters the second water inlet channel 1211, flows into the third return water cavity 234 from the second liquid outlet 1214, and then the cooling water in the third return water cavity 234 flows into the second water outlet channel 1212 through the second liquid outlet 1215.

[0073] In an embodiment, referring to Figure 4 and Figure 5 Each liquid cooling plate assembly 1 further includes two shunts 14, one of which is connected to one end of the first liquid cooling plate 11 away from the shunt 23, and the other is connected to one end of the second liquid cooling plate 12 away from the shunt 23, each shunt 14 has a liquid inlet chamber 141 and a liquid outlet chamber 142 which are separated from each other; the first water inlet channel 1111 and the first water outlet channel 1112 are in communication with the corresponding liquid inlet chamber 141 and liquid outlet chamber 142, respectively; the second water inlet channel 1211 and the second water outlet channel 1212 are in communication with the corresponding liquid inlet chamber 141 and liquid outlet chamber 142, respectively.

[0074] In an embodiment, referring to Figure 1The liquid cooling structure 100 further comprises a pipeline assembly 2, which comprises water inlet sub-pipes 21 and water outlet sub-pipes 22 extending in the first direction; two adjacent water inlet compartments 141 are communicated through the water inlet sub-pipes 21; and two adjacent water outlet compartments 142 are communicated through the water outlet sub-pipes 22. Specifically, cooling water enters the water inlet sub-pipes 21, and then flows into the water inlet compartments 141 through the water inlet sub-pipes 21. The cooling water in the water inlet compartments 141 flows into the liquid cooling plate assembly 1, thereby achieving water supply to the liquid cooling plate assembly 1. The cooling water in the liquid cooling plate assembly 1 can enter the water outlet compartments 142, and then flow into the water outlet sub-pipes 22. Finally, the water outlet sub-pipes 22 discharge the cooling water. In this embodiment, the water inlet sub-pipes 21 and the water outlet sub-pipes 22 are connected through the shunt 14, which can improve the stability of the pipeline assembly 2. In addition, the water inlet sub-pipes 21 are divided into multiple, and the water outlet sub-pipes 22 are divided into multiple, which can shorten the length of each water inlet sub-pipe 21 and water outlet sub-pipe 22, reduce the problem of deformation of the water inlet sub-pipes 21 and the water outlet sub-pipes 22, and facilitate individual maintenance and replacement of each water inlet sub-pipe 21 and water outlet sub-pipe 22.

[0075] In this embodiment, the positional relationship between the water inlet sub-pipes 21 and the water outlet sub-pipes 22 is not limited, and the water inlet sub-pipes 21 and the water outlet sub-pipes 22 can be arranged left and right or spaced apart upward and downward. The water inlet sub-pipes 21 can supply water to multiple groups of liquid cooling plate assemblies 1 at the same time, and the multiple groups of liquid cooling plate assemblies 1 can simultaneously discharge cooling water into the water outlet sub-pipes 22, which can save the number of pipelines, save material and installation costs, and improve the structural compactness of the liquid cooling structure 100.

[0076] In an embodiment, with reference to Figures 1 to 5The number of the pipeline assembly 2 is two, and the two pipeline assemblies 2 are respectively distributed on two sides of the liquid cooling structure 100 along a second direction. The two ends of each liquid cooling plate assembly 1 are connected with a flow divider 14. The liquid cooling structure 100 further comprises a first water inlet branch pipe 261, a second water inlet branch pipe 262, a first water outlet branch pipe 271 and a second water outlet branch pipe 272. The first water inlet branch pipe 261, the total water inlet pipe 26 and the second water inlet branch pipe 262 are sequentially connected. The first water inlet branch pipe 261 is connected with one of the water inlet branch pipes 21, and the second water inlet branch pipe 262 is connected with the other water inlet branch pipe 21. The first water outlet branch pipe 271, the total water outlet pipe 27 and the second water outlet branch pipe 272 are sequentially connected. The first water outlet branch pipe 271 is connected with one of the water outlet branch pipes 22, and the second water outlet branch pipe 272 is connected with the other water outlet branch pipe 22. After the cooling water enters the total water inlet pipe 26, the cooling water enters the corresponding water inlet branch pipes 21 through the first water inlet branch pipe 261 and the second water inlet branch pipe 262. The water inlet branch pipes 21 and the flow dividers 23 on the two sides of the liquid cooling structure 100 distribute the cooling water to the corresponding first water inlet channels 1111 and second water inlet channels 1211. The cooling water in the first water outlet channels 1112 and the second water outlet channels 1212 flows into the first water outlet branch pipe 271 and the second water outlet branch pipe 272 through the corresponding water outlet branch pipes 22, and then flows out through the total water outlet pipe 27.

[0077] In an embodiment, referring to Figure 5 The pipeline assembly 2 further comprises a first sealing pipe 24. The liquid inlet chamber 141 communicates with the adjacent water inlet branch pipe 21 through the first sealing pipe 24. One end of the first sealing pipe 24 is sealingly connected with the liquid inlet chamber 141, and the other end is sealingly connected with the adjacent water inlet branch pipe 21. The first sealing pipe 24 can seal the connection gap between the liquid inlet chamber 141 and the water inlet branch pipe 21, thereby improving the sealing performance of the pipeline assembly 2.

[0078] In an embodiment, referring to Figure 5 The pipeline assembly 2 further comprises a second sealing pipe 25. The liquid outlet chamber 142 communicates with the adjacent water outlet branch pipe 22 through the second sealing pipe 25. One end of the second sealing pipe 25 is sealingly connected with the liquid outlet chamber 142, and the other end is sealingly connected with the adjacent water outlet branch pipe 22. The second sealing pipe 25 can seal the connection gap between the liquid outlet chamber 142 and the water outlet branch pipe 22, thereby improving the sealing performance of the pipeline assembly 2.

[0079] The embodiments of the present application also provide an electric cell module comprising the liquid cooling structure 100 as described above.

[0080] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A liquid cooling structure characterized by, The liquid cooling structure comprises: a plurality of liquid cooling plate assemblies arranged along a first direction, and an accommodation space for accommodating a battery cell is formed between any two adjacent liquid cooling plate assemblies, each liquid cooling plate assembly comprises a first liquid cooling plate and a second liquid cooling plate which are detachably connected.

2. The liquid cooling structure according to claim 1, wherein the first liquid cooling plate and the second liquid cooling plate are arranged along a second direction, the first liquid cooling plate has a first liquid cooling flow channel, the second liquid cooling plate has a second liquid cooling flow channel, the first liquid cooling flow channel and the second liquid cooling flow channel are isolated from each other, and the second direction is perpendicular to the first direction; in each liquid cooling plate assembly, the first liquid cooling plate and the second liquid cooling plate are connected in parallel.

3. The liquid cooling structure according to claim 1 or 2, wherein each liquid cooling plate assembly further comprises a flow divider, the first liquid cooling plate, the flow divider and the second liquid cooling plate are sequentially connected; the flow divider is in communication with the first liquid cooling plate and the second liquid cooling plate respectively, so that the cooling water can enter the first liquid cooling plate and the second liquid cooling plate simultaneously through the flow divider; or the flow divider separates the first liquid cooling plate and the second liquid cooling plate.

4. The liquid cooling structure according to claim 3, wherein the flow divider comprises a water inlet compartment and a water outlet compartment which are separated from each other; the first liquid cooling plate comprises a first water inlet passage and a first water outlet passage which are separated from each other; the second liquid cooling plate comprises a second water inlet passage and a second water outlet passage which are separated from each other; the water inlet compartment is in communication with the first water inlet passage and the second water inlet passage respectively, and the water outlet compartment is in communication with the first water outlet passage and the second water outlet passage respectively.

5. The liquid cooling structure according to claim 4, wherein each liquid cooling plate assembly further comprises two flow collectors, one of the two flow collectors is connected to one end of the first liquid cooling plate away from the flow divider, and the other flow collector is connected to one end of the second liquid cooling plate away from the flow divider, and each flow collector has a first water return cavity; the first water inlet passage is in communication with the first water outlet passage through the corresponding first water return cavity; the second water inlet passage is in communication with the second water outlet passage through the corresponding first water return cavity.

6. The liquid cooling structure according to claim 5, wherein the liquid cooling structure further comprises a pipeline assembly, the pipeline assembly comprises a water inlet sub-pipe and a water outlet sub-pipe which extend along the first direction; any two adjacent water inlet compartments are in communication through the water inlet sub-pipe; any two adjacent water outlet compartments are in communication through the water outlet sub-pipe.

7. The liquid cooling structure according to claim 6, wherein the pipeline assembly further comprises a first sealing pipe, the water inlet compartment is in communication with the adjacent water inlet sub-pipe through the first sealing pipe, one end of the first sealing pipe is sealingly connected to the adjacent water inlet compartment, and the other end of the first sealing pipe is sealingly connected to the adjacent water inlet sub-pipe; and / or The pipeline assembly further comprises a second sealing pipe, the drainage bin is communicated with the adjacent drainage sub-pipe through the second sealing pipe, one end of the second sealing pipe is sealingly connected with the adjacent drainage bin, and the other end is sealingly connected with the adjacent drainage sub-pipe.

8. The liquid cooling structure of claim 3, wherein, the shunt body comprises a second return water cavity and a third return water cavity which are separated from each other; the first liquid cooling plate comprises a first water inlet channel and a first water outlet channel which are separated from each other; the second liquid cooling plate comprises a second water inlet channel and a second water outlet channel which are separated from each other; the first water inlet channel is communicated with the first water outlet channel through the second return water cavity; the second water inlet channel is communicated with the second water outlet channel through the third return water cavity.

9. The liquid cooling structure of claim 8, wherein, each of the liquid cooling plate assemblies further comprises two shunts, one of the two shunts is connected to the first liquid cooling plate at an end away from the shunt body, and the other shunt is connected to the second liquid cooling plate at an end away from the shunt body, each of the shunts has a water inlet bin and a water outlet bin which are separated from each other; the first water inlet channel and the first water outlet channel are respectively communicated with the corresponding water inlet bin and water outlet bin; the second water inlet channel and the second water outlet channel are respectively communicated with the corresponding water inlet bin and water outlet bin.

10. The liquid cooling structure of claim 9, wherein, the liquid cooling structure further comprises a pipeline assembly, the pipeline assembly comprises a water inlet sub-pipe and a drainage sub-pipe which extend along the first direction; two adjacent water inlet bins are communicated through the water inlet sub-pipe; two adjacent water outlet bins are communicated through the drainage sub-pipe.

11. The liquid cooling structure of claim 10, wherein, the pipeline assembly further comprises a first sealing pipe, the water inlet bin is communicated with the adjacent water inlet sub-pipe through the first sealing pipe, one end of the first sealing pipe is sealingly connected with the adjacent water inlet bin, and the other end is sealingly connected with the adjacent water inlet sub-pipe; and / or the pipeline assembly further comprises a second sealing pipe, the water outlet bin is communicated with the adjacent drainage sub-pipe through the second sealing pipe, one end of the second sealing pipe is sealingly connected with the adjacent water outlet bin, and the other end is sealingly connected with the adjacent drainage sub-pipe.

12. An electrochemical cell module, characterized by: The liquid cooling structure as claimed in any one of claims 1 to 11.

Images