Liquid cooling assembly, battery module and battery pack

Abstract

The utility model discloses a liquid cooling assembly, which comprises a plurality of liquid cooling unit pieces which are uniformly spaced, each liquid cooling unit piece is provided with a conveying pipe body, a pipeline bayonet head, a pipeline buckling head and a liquid cooling plate piece which is movably connected to the conveying pipe body, and the pipeline bayonet head and the pipeline buckling head are respectively arranged at two ends of the conveying pipe body; and the pipeline bayonet heads of the liquid cooling unit pieces are clamped and matched with the pipeline buckling heads of the adjacent liquid cooling unit pieces, so that the two adjacent conveying pipe bodies are communicated. Meanwhile, the utility model further discloses a battery module applying the liquid cooling assembly and a battery pack applying the battery module, and the problems that an existing battery module is difficult to assemble and even cannot be assembled into a group during assembly are solved.

Description

Technical Field

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

[0002] With the development of economy and the progress of science and technology, lithium battery, as one of the cleanest secondary energy sources, has been widely favored by people. Lithium battery has the advantages of light weight, large energy storage, high power, no pollution, long life, small self-discharge coefficient, wide temperature adaptability, etc. Therefore, it has gradually been favored by people and gradually replaced other traditional batteries in the field of energy storage and power batteries.

[0003] For example, a battery module and a battery pack having the battery module disclosed in announcement number CN116111228A on May 12, 2023, the battery module includes a support plate, a cooling plate and a plurality of battery cells; the plurality of battery cells are mounted on the support plate, the cooling plate is mounted on the support plate, the side walls of the battery cells are attached to the surface of the cooling plate, a microchannel penetrating the cooling plate is provided on the cooling plate, a protrusion is provided on the inner wall of the microchannel, and the two ends of the microchannel are respectively connected to the inlet pipe and the outlet pipe, and the inlet pipe is used for the coolant to enter and flow out of the outlet pipe through the microchannel. In addition, a first fixed column is provided at one end of the cooling plate, the first fixed column is mounted on the support plate, the first fixed column is connected to one end of the plurality of microchannels, and the inlet pipe passes through the plurality of first fixed columns to connect one end of the plurality of cooling plates in series.

[0004] According to the existing battery module, the heat dissipation efficiency can be effectively improved, which solves the problem of the low heat dissipation efficiency of the battery module in the prior art, which leads to a shortened battery cell life. However, after producing and assembling the battery module, it was found that due to production errors in the process of producing cooling plates and other spare parts, and assembly tolerances in the assembly process of spare parts (such as the assembly tolerance between the battery cell and the cooling plate, etc.), the model size of the processed inlet pipe has been determined. In this way, with the accumulation of errors and assembly tolerances, it will cause the battery module to be difficult to assemble during assembly, or even unable to be assembled into a group. Utility Model Content

[0005] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a liquid cooling assembly, a battery module and a battery pack, which solves the problem that the existing battery modules are difficult to assemble or even cannot be assembled into groups.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A liquid cooling assembly comprises a plurality of liquid cooling units arranged at intervals, each of the liquid cooling units comprises a delivery pipe body, a pipe clamping head, a pipe buckling head, and a liquid cooling plate movably connected to the delivery pipe body, the pipe clamping head and the pipe buckling head are respectively arranged at two ends of the delivery pipe body;

[0008] The pipe clamping head of the liquid cooling unit is engaged with the pipe buckling head of the adjacent liquid cooling unit, so that the two adjacent conveying pipe bodies are connected.

[0009] In some embodiments of the present invention, the pipe fastening head can be movably adjusted with the pipe clamping head in the first extension direction G of the conveying pipe body, so that two adjacent liquid cooling plates are kept spaced apart.

[0010] In some embodiments of the utility model, the pipe clamping head includes a first connecting tube and a clamping force receiving arm arranged on the outside of the first connecting tube, the pipe snap-fitting head includes a second connecting tube and a clamping force-bearing part arranged on the second connecting tube, the first connecting tube is inserted into the second connecting tube, and the clamping force receiving arm clamps the clamping force-bearing part.

[0011] In some embodiments of the utility model, one of the card-receiving force arm and the snap-fit ​​force-bearing portion is provided with a card slot structure, and the other of the card-receiving force arm and the snap-fit ​​force-bearing portion is provided with a snap structure, the snap structure is snapped into the card slot structure, and in the first extension direction G of the conveying tube body, an adjustment space L3 is formed between the groove wall of the card slot structure and the snap structure.

[0012] In some embodiments of the present invention, the distance between the fixed end of the card receiving force arm and a side wall of the card slot structure away from the fixed end is defined as a first spacing L1, and the slot length of the card slot structure is less than or equal to the first spacing L1.

[0013] In some embodiments of the present invention, the distance between the pipe mouth of the second connecting pipe and the side of the snap structure away from the pipe mouth is defined as a second spacing L2, the second spacing L2 is smaller than the first spacing L1, and the adjustment spacing of the adjustment space L3 is the first spacing L1-the second spacing L2.

[0014] In some embodiments of the present invention, the clamping force receiving arm is a structure having elastic properties in the first extension direction G of the conveying tube body.

[0015] In some embodiments of the utility model, a diversion branch pipe is formed on the conveying pipe body, a branch clamping arm is provided on the diversion branch pipe, a liquid cooling connector is provided on the liquid cooling plate, a liquid cooling buckling portion is provided on the liquid cooling connector, the branch clamping arm buckles the liquid cooling buckling portion, and the diversion branch pipe is connected to the liquid cooling connector.

[0016] In some embodiments of the utility model, one of the branch clamping arm and the liquid-cooling buckling part is provided with a branch adjustment groove, and the other of the branch clamping arm and the liquid-cooling buckling part is provided with a branch buckle part, the branch adjustment groove is clamped with the branch buckle part, and in the extension direction of the guide branch pipe, a compensating gap is provided between the groove wall of the branch adjustment groove and the branch buckle part.

[0017] In some embodiments of the present invention, the liquid cooling plate has a plurality of fluid channels inside, the plurality of fluid channels are evenly arranged, and two adjacent fluid channels are connected end to end to form a serpentine channel.

[0018] In some embodiments of the utility model, the liquid cooling plate includes a main collecting fluid with a main collecting chamber, a subordinate collecting fluid with a subordinate collecting chamber, and a liquid cooling plate body provided with a plurality of the fluid channels, the main collecting fluid and the subordinate collecting fluid are respectively connected to the two ends of the liquid cooling plate body, and the plurality of the fluid channels are connected end to end through the main collecting chamber and the subordinate collecting chamber to form the serpentine channel.

[0019] In some embodiments of the utility model, the liquid cooling component also includes a pipe external connector, which includes an external pipe body, an external branch pipe connected to the external pipe body, and an external snap-on head arranged at the end of the external pipe body, and the external snap-on head can snap-on the pipe clamping head or the pipe snap-on head.

[0020] The utility model also discloses a battery module, comprising:

[0021] The above-mentioned liquid cooling assembly;

[0022] A battery pack, wherein the battery pack has several rows of battery cells, the battery cells have several battery cells, and the several battery cells are arranged along the length direction of the liquid cooling plate of the liquid cooling assembly, each of the battery cells is arranged between two of the liquid cooling plates, and each of the battery cells can exchange heat with the liquid cooling plate.

[0023] The utility model also discloses a battery pack, comprising: the above-mentioned battery module.

[0024] In summary, the liquid cooling assembly, battery module and battery pack provided by the utility model have the following technical effects:

[0025] Through the cooperation between the pipe clamp mouth and the pipe buckle head, not only can multiple conveying pipe bodies be connected and connected to each other, but also the liquid cooling assembly can be adjusted along the extension direction of the conveying pipe body, so as to compensate for and eliminate the error accumulation in the extension direction of the conveying pipe body, that is, the assembler can flexibly adjust the clamping position between the pipe clamp mouth and the pipe buckle head according to the production error of the liquid cooling plate and the assembly tolerance between the liquid cooling plate and the battery cell, so that each battery cell of the battery unit can stably exchange heat with the liquid cooling plate, ensure the assembly accuracy of the battery module, reduce the assembly difficulty of the battery module, solve the problem that the existing battery module is easy to be difficult to assemble during assembly, or even cannot be assembled into a group, and ensure the overall structural strength of the liquid cooling assembly, avoiding leakage of the liquid cooling assembly during the adjustment process. In addition, it is also beneficial to connect multiple liquid cooling plates in parallel, thereby reducing the flow resistance of the liquid cooling system in the battery pack and improving the flow uniformity of the liquid cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall assembly of a liquid cooling component of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the liquid cooling unit in the utility model;

[0028] Figure 3 This is a structural diagram of the first part of the liquid cooling unit in the utility model;

[0029] Figure 4 This is a structural diagram of the first part of the liquid cooling unit in the utility model;

[0030] Figure 5 This is a schematic diagram of the overall structure of a battery module of the utility model;

[0031] Figure 6 It is a schematic diagram of a liquid cooling assembly of the utility model in a state of being not fastened and connected;

[0032] Figure 7 This is a first state diagram of a liquid cooling assembly of the utility model after being fastened and connected;

[0033] Figure 8 This is a second state diagram of a liquid cooling assembly of the utility model after being fastened and connected.

[0034] Icons: 1-liquid cooling unit, 11-transport pipe body, 12-pipe clamp head, 121-first connecting pipe, 122-clamp force receiving arm, 123-first sealing groove, 13-pipe buckle head, 131-buckle force receiving part, 132-second connecting pipe, 14-liquid cooling plate, 141-liquid cooling connecting head, 142-liquid cooling buckle part, 143-heat exchange contact surface, 144-main collector, 145-liquid cooling plate body, 151-slot structure, 152-clamp structure, 153-limiting part, 161-flow guide branch pipe, 162-branch clamp arm, 171-branch adjustment groove, 172-branch buckle part, 18-pipe external part, 181-external pipe body, 182-external branch pipe, 183-external buckle head, 19-seal, 2-battery unit, 21-battery cell. DETAILED DESCRIPTION

[0035] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] Please combine the specific Figure 5 As shown, the utility model discloses a battery module, including a battery pack and a liquid cooling assembly, wherein the battery pack has a plurality of rows of battery cells 2, and the battery cells 2 have a plurality of battery cells 21, wherein the battery cells 21 are preferably cylindrical batteries, and of course, square batteries can also be selected.

[0039] In this embodiment, the above-mentioned liquid cooling assembly includes a plurality of liquid cooling units 1 arranged at intervals, each liquid cooling unit 1 having a delivery tube body 11 and a liquid cooling plate 14 movably connected to the delivery tube body 11, and a plurality of battery cells 21 are arranged along the length direction of the liquid cooling plate 14 of the liquid cooling assembly, that is, the arrangement direction of the plurality of battery cells 21 is consistent with the length direction of the liquid cooling plate 14, each battery unit 2 is arranged between two liquid cooling plates 14, and each battery cell 21 can exchange heat with the liquid cooling plate 14.

[0040] Among them, the liquid cooling plate 14 has a heat exchange contact surface 143, and the external heat exchange medium (such as coolant, water, etc.) is supplied to the liquid cooling plate 14 through the conveying pipe body 11. When the battery cell 21 is in a charging and discharging state, the temperature of the battery cell 21 is higher than the heat exchange medium on the liquid cooling plate 14. The large amount of heat released from the battery cell 21 will be transferred to the heat exchange contact surface 143 and transferred to the heat exchange medium, and finally discharged from the liquid cooling component with the flow of the heat exchange medium, thereby realizing the cooling of the battery pack by the liquid cooling component, so that each battery cell 21 of the battery pack is used within the optimal temperature range.

[0041] like Figure 5 As shown, in order to enable the large amount of heat released by the battery cell 21 to be absorbed in time by the liquid cooling plate 14 of the liquid cooling assembly and improve the heat exchange efficiency of the liquid cooling plate 14, the heat exchange contact surface 143 of the liquid cooling plate 14 is arranged in a wave shape, that is, the heat exchange contact surface 143 of the liquid cooling plate 14 has a plurality of arc-shaped troughs, and each battery cell 21 is correspondingly abutted and fitted in the corresponding trough, and the shape and size of each trough are preferably adapted to the shape and size of the battery cell 21, so that the heat exchange area between the battery cell 21 and the heat exchange contact surface 143 is larger, and the heat exchange efficiency of the liquid cooling plate 14 is maximized, which can effectively avoid the risk of thermal runaway of each battery cell 21 of the battery pack.

[0042] The core of this embodiment is to combine Figure 1 , Figure 2 and Figure 5 As shown, the above-mentioned liquid cooling component includes a pipe clamping head 12 and a pipe snap-fitting head 13, and the pipe clamping head 12 and the pipe snap-fitting head 13 are respectively arranged at both ends of the delivery pipe body 11, that is, the pipe clamping head 12, the pipe snap-fitting head 13 and the delivery pipe body 11 are integrally formed to ensure the sealing and structural strength of the pipe, thereby ensuring the overall structural stability of the liquid cooling component.

[0043] The pipe clamping head 12 of the liquid cooling unit 1 is engaged with the pipe snap-fitting head 13 of the adjacent liquid cooling unit 1, so that the two adjacent conveying pipe bodies 11 are connected. This installation connection method is more efficient and convenient, and reduces the difficulty of connecting the conveying pipe bodies 11 to each other.

[0044] For further details, please refer to Figure 1 and Figure 2 As shown, the pipe buckle head 13 can be movably adjusted with the pipe clamping head 12 in the first extension direction G of the conveying pipe body 11, so that two adjacent liquid cooling plates 14 are kept spaced apart.

[0045] Specifically, the pipe clamping head 12 and the pipe snap-fitting head 13 are provided with an adjustment space L3 when they are snap-fitted, so that the pipe clamping head 12 can change the position of the pipe clamping head 12 snapping together along the first extension direction G of the conveying pipe body 11, thereby achieving the purpose of movable adjustment of the pipe snap-fitting head 13 and the pipe clamping head 12.

[0046] Therefore, when there are production errors in the production process of the liquid cooling plate 14 and other spare parts, and there are assembly tolerances in the assembly process of the spare parts, that is, when there are accumulated errors in the first extension direction G of the conveying tube body 11, the position of the pipe clamping head 12 and the pipe buckle head 13 can be adjusted. In this way, the pipe clamping head 12 and the pipe buckle head 13 are adjusted along the first extension direction G of the conveying tube body 11 to compensate for and eliminate the accumulated errors in the first extension direction G of the conveying tube body 11, which not only makes the two adjacent liquid cooling plates 14 spaced apart, but also makes each battery cell 21 of the battery unit 2 able to stably exchange heat with the liquid cooling plate 14, thereby ensuring the assembly accuracy of the battery module and reducing the difficulty of assembling the battery module.

[0047] It must be explained that the engagement position between the pipe clamping head 12 and the pipe buckle head 13 is adjusted according to the production error of the liquid cooling plate 14 and the assembly tolerance between the liquid cooling plate 14 and each battery cell 21, so that the delivery pipe body 11 itself does not need to be changed in structure and construction, thereby avoiding the problem of damage to the delivery pipe body 11 during the tensile deformation process or local stress concentration leading to leakage. Therefore, the delivery pipe body 11 can be produced and manufactured using materials with high comprehensive properties such as hardness and strength, and also avoids the problem of oxidation and aging caused by long-term use due to the use of flexible and highly plastic non-metallic materials for the delivery pipe body 11, thereby being able to well ensure the stability and safety of the liquid cooling assembly and the battery pack using the liquid cooling assembly in long-term use.

[0048] It should also be noted that the spacing distribution between the two adjacent liquid cooling plates 14 can be the same, or the spacing between the two adjacent liquid cooling plates 14 can be different, that is, the battery cells 2 between the two adjacent liquid cooling plates 14 are configured in multiple rows.

[0049] As a preferred method of this embodiment, please refer to Figure 1 , Figure 2 and Figure 4As shown, the pipe clamping head 12 includes a first connecting tube 121 and a clamping force receiving arm 122 arranged on the outside of the first connecting tube 121, and the pipe snap-fitting head 13 includes a second connecting tube 132 and a snap-fitting force receiving portion 131 arranged on the second connecting tube 132. The outer diameter of the first connecting tube 121 is preferably smaller than the inner diameter of the second connecting tube 132 within the assembly tolerance range. The first connecting tube 121 is plugged into the second connecting tube 132, and the clamping force receiving arm 122 is snap-fitted with the snap-fitting force receiving portion 131, thereby achieving the purpose of snap-fitting between the pipe clamping head 12 and the pipe snap-fitting head 13.

[0050] It should be noted that in order to avoid the problem of heat exchange medium leaking from between the first connecting pipe 121 and the second connecting pipe 132 due to the assembly tolerance between the first connecting pipe 121 and the second connecting pipe 132, a sealing ring may be arranged between the first connecting pipe 121 and the second connecting pipe 132. Specifically, Figure 2 and Figure 4 As shown, a first sealing groove 123 with a sealing ring embedded therein is provided on the outer wall of the first connecting tube 121. Under the action of the sealing ring, the sealing performance of the clamping connection between the pipe clamping head 12 and the pipe buckle head 13 is effectively guaranteed. At the same time, in the process of adjusting the clamping position, the sealing ring is sealed between the first connecting tube 121 and the second connecting tube 132, so that the liquid cooling component maintains the best sealing performance during the assembly, adjustment and use, providing the best protection for the safety of the battery module and the battery pack.

[0051] An unexpected effect is that, since the sealing ring abuts against the first connecting tube 121 and the second connecting tube 132 at the same time, there is sufficient friction between the pipe clamping head 12 and the pipe buckling head 13, so that the first connecting tube 121 and the second connecting tube 132 are not easy to move after being plugged in.

[0052] As a preferred method of this embodiment, please refer to Figure 1 , Figure 2 and Figure 4 As shown, a slot structure 151 is provided on the card-receiving force arm 122, and a buckle structure 152 is provided on the buckle force-receiving portion 131. The buckle structure 152 extends around the circumference of the second connecting tube 132. The buckle structure 152 is buckled in the slot structure 151, and in the first extension direction G of the conveying tube body 11, an adjustment space L3 is formed between the slot wall of the slot structure 151 and the buckle structure 152.

[0053] Therefore, under the action of the adjustment space L3, the purpose of adjusting the pipe clamping head 12 and the pipe snap-fitting head 13 along the first extension direction G of the conveying pipe body 11 is achieved to compensate for and eliminate the accumulated errors, thereby ensuring that the two spaced-apart liquid cooling plates 14 maintain the same spacing.

[0054] It should be noted that in addition to the above-mentioned arrangement of the slot structure 151 on the card receiving force arm 122 and the arrangement of the buckle structure 152 on the buckling force bearing portion 131 , the slot structure 151 can also be arranged on the buckling force bearing portion 131 and the buckle structure 152 can also be arranged on the card receiving force arm 122 .

[0055] It should also be noted that the specific Figure 6 , Figure 7 and Figure 8 As shown, the distance between the fixed end of the card receiving force arm 122 and a side wall of the card slot structure 151 away from the fixed end is defined as a first spacing L1. The fixed end here is the end of the card receiving force arm 122 used to connect to the first connecting tube 121. The slot length of the card slot structure 151 is less than or equal to the first spacing L1, so that the adjustment space L3 is more sufficient.

[0056] Specifically, please combine Figure 4 as well as Figure 6 As shown, a limiting portion 153 is formed between one side of the slot structure 151 close to the fixed end and the fixed end of the card receiving force arm 122. When the snap structure 152 abuts against the limiting portion 153, the pipe snap head 12 will be able to be quickly snap-fitted and positioned with the pipe snap head 13, thereby improving the snap-fitting efficiency of the liquid cooling component. At this time, the slot length of the slot structure 151 is smaller than the first spacing L1.

[0057] For further details, please refer to Figure 7 and Figure 8 As shown, the distance between the tube mouth of the second connecting tube 132 and the side of the snap structure 152 away from the tube mouth is defined as the second spacing L2, the second spacing L2 is smaller than the first spacing L1, and the adjustment spacing of the adjustment space L3 is the first spacing L1-the second spacing L2, so as to better compensate for and eliminate the error accumulation in the first extension direction G of the conveying tube body 11, and better adjust according to the production errors and assembly tolerances of different liquid cooling plates 14 to meet the tolerance requirements of the battery pack.

[0058] Please refer to the following for details: Figure 4 as well as Figure 6 As shown, an extension pipe head can be formed between the side of the buckle structure 152 near the pipe mouth and the pipe mouth of the second connecting pipe 132. In addition, in order to facilitate the fast and smooth connection between the pipe clamping head 12 and the pipe buckle head 13, a guide surface is provided on the side of the buckle structure 152 near the extension pipe head.

[0059] As a preferred method of this embodiment, please refer to Figure 8As shown, the above-mentioned card receiving force arm 122 is a structure with elastic properties in the first extension direction G of the conveying pipe body 11. For example, the card receiving force arm 122 can be selected to be a plastic material to ensure that the card receiving force arm 122 has elastic properties. When the buckle structure 152 abuts against the side of the card slot structure 151 close to the fixed end, the card receiving force arm 122 will be deformed. In this way, the length of the card receiving force arm 122 and the slot length of the card slot structure 151 can be increased, thereby increasing the adjustment spacing of the adjustment space L3. The first connecting pipe 121, the conveying pipe body 11, and the second connecting pipe 132 can be selected to be made of metal materials to ensure sufficient structural strength, so that the connection between the pipe clamp head 12 and the pipe buckle head 13 is more firm and stable.

[0060] As a preferred method of this embodiment, please refer to Figure 1 , Figure 2 and Figure 4 As shown, a guide branch pipe 161 is formed on the delivery pipe body 11, and a branch clamping arm 162 is arranged on the guide branch pipe 161. A liquid cooling connector 141 is provided on the liquid cooling connector 141. A liquid cooling snap-fitting portion 142 is snapped on the branch clamping arm 162 with the liquid cooling snap-fitting portion 142, and the guide branch pipe 161 is communicated with the liquid cooling connector 141, thereby achieving the purpose of connecting and fixing the liquid cooling plate 14 and the delivery pipe body 11, and the heat exchange medium inside the delivery pipe body 11 can flow through the guide branch pipe 161 and the liquid cooling connector 141 in sequence and flow to the inside of the liquid cooling plate 14, or the heat exchange medium inside the liquid cooling plate 14 can flow through the liquid cooling connector 141 and the guide branch pipe 161 in sequence and flow to the inside of the delivery pipe body 11.

[0061] As a further preferred method of this embodiment, please refer to Figure 2 and Figure 4 As shown, a branch adjusting groove 171 is provided on the above-mentioned branch clamping arm 162, and a branch clamping portion 172 is provided on the liquid cooling buckle portion 142. The branch clamping portion 172 extends around the circumference of the liquid cooling connector 141, and the branch adjusting groove 171 clamps the branch clamping portion 172. In the extension direction of the guide branch pipe 161, a compensation gap is provided between the groove wall of the branch adjusting groove 171 and the branch clamping portion 172. Under the effect of the compensation gap, the purpose of adjusting the clamping position between the guide branch pipe 161 and the liquid cooling connector 141 in the extension direction of the guide branch pipe 161 is achieved, thereby achieving the effect that the liquid cooling plate 14 can be flexibly adjusted in the extension direction of the guide branch pipe 161, that is, to compensate and eliminate the assembly tolerance of the liquid cooling plate 14 and the battery cell 21 in the extension direction of the guide branch pipe 161, so that each battery cell 21 can be more compactly fitted with the heat exchange contact surface 143 of the liquid cooling plate 14.

[0062] It should be noted that in addition to providing the branch adjustment groove 171 on the branch clamping arm 162 and the branch clamping portion 172 on the liquid cooling buckle portion 142, it is also possible to provide the branch clamping portion 172 on the branch clamping arm 162 and the branch adjustment groove 171 on the liquid cooling buckle portion 142.

[0063] It should also be noted that, in order to avoid the problem of heat exchange medium leaking from between the flow guiding branch pipe 161 and the liquid cooling connector 141, at least one sealing member 19 may be optionally disposed between the flow guiding branch pipe 161 and the liquid cooling connector 141. Figure 4 As shown, a second sealing groove in which a sealing member 19 is embedded is provided on the outer side wall of the guide branch pipe 161 . Under the action of the sealing member 19 , the sealing performance of the clamping connection between the guide branch pipe 161 and the liquid cooling connector 141 is effectively ensured.

[0064] As a preferred method of this embodiment, please refer to Figure 1 and Figure 3 As shown, the liquid cooling component also includes a pipe external connector 18, which includes an external pipe body 181, an external branch pipe 182 connected to the external pipe body 181, and an external snap-on head 183 arranged at the end of the external pipe body 181, and the external snap-on head 183 can snap-on the pipe snap-on end 12.

[0065] Specifically, an external buckle head 183 is provided with an external buckle portion, which extends around the circumference of the external buckle head 183 and is buckled into the slot structure 151 of the pipe buckle head 12, thereby achieving the purpose of the external buckle head 183 being buckled and fixed to the pipe buckle head 12 on the delivery pipe body 11. In addition, the external heat exchange medium flows through the external branch pipe 182, the external pipe body 181, and the delivery pipe body 11 in sequence, thereby achieving the external heat exchange medium being guided to the delivery pipe body 11 of the liquid cooling assembly and stably supplied to the liquid cooling plate 14 of the liquid cooling assembly.

[0066] Preferably, an external gap may be provided between the groove wall of the slot structure 151 and the external buckle portion in the first extension direction G of the delivery tube body 11. In this way, under the effect of the external gap, the purpose of adjusting the clamping position between the delivery tube body 11 and the external tube body 181 in the first extension direction G of the delivery tube body 11 can be achieved, thereby effectively compensating for and eliminating the assembly tolerance of the delivery tube body 11 and the external tube body 181 in the first extension direction G of the delivery tube body 11.

[0067] It should be noted that, in addition to being snap-fitted to the pipe snap-fit ​​head 12 , the external snap-fit ​​head 183 can also be snap-fitted to the pipe snap-fit ​​head 13 .

[0068] It should also be noted that the above-mentioned liquid cooling plate 14 has a plurality of fluid channels inside, and the plurality of fluid channels are evenly arranged, and two adjacent fluid channels are connected end to end to form a serpentine channel. In this way, after the heat exchange medium flows into the serpentine channel, it will flow from top to bottom or from bottom to top along the direction in which the plurality of fluid channels are arranged, which is equivalent to the heat exchange medium flowing from bottom to top or from top to bottom along the height direction of the battery cell 21. This increases the flow distance of the heat exchange medium in the liquid cooling plate 14, greatly increases the heat exchange time between the heat exchange medium and the battery cell 21, and thus effectively improves the utilization rate of the heat exchange medium.

[0069] As a preferred method in this example, please refer to Figure 2 As shown, the above-mentioned liquid cooling plate 14 includes a main collector 144 with a main collecting cavity, a slave collector with a slave collecting cavity, and a liquid cooling plate body 145 with a plurality of fluid channels. The main collector 144 and the slave collector are respectively connected to the two ends of the liquid cooling plate body 145, and the plurality of fluid channels are connected end to end through the main collecting cavity and the slave collecting cavity to form a serpentine channel. The connection method here can refer to a heat exchange component, battery module and battery pack for a battery with the authorization announcement number CN219066953U published on May 23, 2023.

[0070] Based on the structure and connection relationship of the above-mentioned battery module, the utility model also discloses a battery pack including the above-mentioned battery module.

[0071] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A liquid cooling component, characterized in that: The invention comprises a plurality of liquid cooling units (1) arranged at intervals, each of the liquid cooling units (1) comprising a delivery pipe body (11), a pipe clamping head (12), a pipe buckling head (13), and a liquid cooling plate (14) movably connected to the delivery pipe body (11), the pipe clamping head (12) and the pipe buckling head (13) being respectively arranged at two ends of the delivery pipe body (11); The pipe clamping head (12) of the liquid cooling unit (1) is engaged with the pipe buckling head (13) of the adjacent liquid cooling unit (1), so that the two adjacent conveying pipe bodies (11) are connected.

2. The liquid cooling assembly according to claim 1, characterized in that: The pipe buckle head (13) can be movably adjusted with the pipe clamping head (12) in the first extension direction G of the delivery pipe body (11), so that two adjacent liquid cooling plates (14) are kept spaced apart.

3. The liquid cooling assembly according to claim 1 or 2, characterized in that: The pipeline clamping head (12) comprises a first connecting tube (121) and a clamping force receiving arm (122) arranged outside the first connecting tube (121); the pipeline locking head (13) comprises a second connecting tube (132) and a clamping force receiving portion (131) arranged on the second connecting tube (132); the first connecting tube (121) is plugged into the second connecting tube (132), and the clamping force receiving arm (122) is clamped into the clamping force receiving portion (131).

4. The liquid cooling assembly according to claim 3, characterized in that: One of the card-receiving force arm (122) and the buckling force-bearing portion (131) is provided with a card slot structure (151), and the other of the card-receiving force arm (122) and the buckling force-bearing portion (131) is provided with a buckle structure (152). The buckle structure (152) is buckled in the card slot structure (151), and in the first extension direction G of the conveying tube body (11), an adjustment space L3 is formed between the groove wall of the card slot structure (151) and the buckle structure (152).

5. The liquid cooling assembly according to claim 4, characterized in that: The distance between the fixed end of the card receiving force arm (122) and a side wall of the card slot structure (151) away from the fixed end is defined as a first spacing L1, and the slot length of the card slot structure (151) is less than or equal to the first spacing L1.

6. The liquid cooling assembly according to claim 5, characterized in that: The distance between the pipe mouth of the second connecting pipe (132) and the side of the snap structure (152) away from the pipe mouth is defined as a second spacing L2, the second spacing L2 is smaller than the first spacing L1, and the adjustment spacing of the adjustment space L3 is the first spacing L1-the second spacing L2.

7. The liquid cooling assembly according to claim 4, 5 or 6, characterized in that: The clamping force receiving arm (122) is a structure having elastic properties in the first extension direction G of the conveying tube body (11).

8. The liquid cooling assembly according to claim 1 or 2 or 4 or 5 or 6, characterized in that: A flow guide branch pipe (161) is formed on the conveying pipe body (11), and a branch clamping arm (162) is provided on the flow guide branch pipe (161). The liquid cooling plate (14) has a liquid cooling connector (141), and a liquid cooling buckling portion (142) is provided on the liquid cooling connector (141). The branch clamping arm (162) buckles with the liquid cooling buckling portion (142), and the flow guide branch pipe (161) is connected to the liquid cooling connector (141).

9. The liquid cooling assembly according to claim 8, characterized in that: One of the branch clamping arm (162) and the liquid cooling buckle part (142) is provided with a branch adjustment groove (171), and the other of the branch clamping arm (162) and the liquid cooling buckle part (142) is provided with a branch buckle part (172); the branch adjustment groove (171) is clamped with the branch buckle part (172), and in the extension direction of the guide branch pipe (161), a compensating gap is provided between the groove wall of the branch adjustment groove (171) and the branch buckle part (172).

10. The liquid cooling assembly according to claim 8, characterized in that: The liquid cooling plate (14) has a plurality of fluid channels inside, the plurality of fluid channels are evenly arranged, and two adjacent fluid channels are connected end to end to form a serpentine channel.

11. The liquid cooling assembly according to claim 10, characterized in that: The liquid cooling plate (14) comprises a main current collector (144) having a main current collecting cavity therein, a secondary current collector having a secondary current collecting cavity therein, and a liquid cooling plate body (145) provided with a plurality of the fluid channels, the main current collector (144) and the secondary current collector being respectively connected to two ends of the liquid cooling plate body (145), and the plurality of the fluid channels being connected end to end through the main current collecting cavity and the secondary current collecting cavity to form the serpentine channel.

12. The liquid cooling assembly according to claim 1 or 2 or 4 or 5 or 6, characterized in that: The invention also comprises a pipeline external connection part (18), wherein the pipeline external connection part (18) comprises an external pipe body (181), an external branch pipe (182) connected to the external pipe body (181), and an external snap-fit ​​head (183) arranged at the end of the external pipe body (181), wherein the external snap-fit ​​head (183) can snap-fit ​​the pipeline snap-fit ​​head (12) or the pipeline snap-fit ​​head (13).

13. A battery module, characterized in that: include: The liquid cooling assembly according to any one of claims 1 to 12; A battery pack, the battery pack comprising a plurality of rows of battery units (2), the battery units (2) comprising a plurality of battery cells (21), the plurality of battery cells (21) being arranged along the length direction of a liquid cooling plate (14) of the liquid cooling assembly, each of the battery units (2) being arranged between two of the liquid cooling plates (14), and each of the battery cells (21) being capable of heat exchange with the liquid cooling plate (14).

14. A battery pack, characterized in that: Comprising the battery module as claimed in claim 13.

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