Liquid cooling module, battery module and battery pack

Abstract

The utility model provides a kind of liquid cooling module, battery module and battery pack.The battery pack includes at least two first cooling plates and pipeline assembly;At least two first cooling plates are oppositely arranged;Pipeline assembly is used to convey cooling medium, and pipeline assembly includes multiple first pipes, each pipe is connected to the first inlet of each first cooling plate, and the size of each first pipe is the same, so that the path of cooling medium through a first pipe to the corresponding first cooling plate is the same.The utility model aims to solve the technical problems of uneven heat dissipation, large temperature difference of battery pack and easy thermal runaway in related technology.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a liquid cooling module, a battery module, and a battery pack. Background Technology

[0002] Energy storage batteries, as an electrochemical energy storage method, are widely used due to their high energy density, portability, and fast response. However, energy storage batteries generate heat during charging and discharging. The accumulation of this heat causes the internal temperature of the battery to rise. If the internal temperature exceeds a set limit, it can easily lead to an explosion, fire, or other safety accidents. Therefore, thermal management of energy storage batteries is necessary to dissipate the heat generated during charging and discharging in a timely manner.

[0003] In related technologies, the modules of the battery pack share a cooling plate. Using a separate liquid cooling plate between non-modules will result in different heat dissipation efficiency between the edge and the middle of the battery pack, leading to an increase in the temperature difference between the two sides of the cell and affecting the uniformity of the cell temperature. At the same time, the heat dissipation efficiency of the module in the middle of the module will be lower than that of the edge, making the temperature of the already high-temperature middle module even higher and the temperature difference greater. Utility Model Content

[0004] The embodiments of this utility model provide a liquid cooling module, a battery module, and a battery pack, aiming to solve the technical problem in related technologies where uneven heat dissipation of cooling components leads to large temperature differences in the battery pack, which can easily cause thermal runaway.

[0005] In a first aspect, embodiments of the present invention provide a liquid cooling module, comprising: At least two first cooling plates, the at least two first cooling plates being arranged opposite to each other; and A piping assembly for conveying a cooling medium, the piping assembly comprising a plurality of first pipes, each first pipe being connected to a first inlet of each first cooling plate, each first pipe being of the same size such that the cooling medium is conveyed through each first pipe to the corresponding first cooling plate via the same path.

[0006] In some embodiments, the piping assembly further includes a manifold and a plurality of second pipes, one end of each second pipe being connected to the manifold and the other end of each second pipe being connected to the first outlet of the corresponding first cooling plate. Each second pipe has the same size so that the cooling medium is delivered to the manifold through the corresponding second pipe via the same path.

[0007] In some embodiments, the battery pack further includes a second cooling plate, with at least two first cooling plates disposed on the second cooling plate; The piping assembly also includes a third pipe connected to the second inlet of the second cooling plate, the third pipe having the same dimensions as the first pipe.

[0008] In some embodiments, the piping assembly further includes a fourth pipe, one end of which is connected to a second outlet of the second cooling plate, and the other end of which is connected to the manifold, the fourth pipe having the same dimensions as the second pipe.

[0009] In some embodiments, the second outlet of the second cooling plate and the second inlet of the second cooling plate are located on the same side.

[0010] In some embodiments, the plurality of first pipes have the same length and the plurality of first pipes have the same diameter; and / or, The multiple second pipes have the same length and the multiple second pipes have the same diameter.

[0011] In some embodiments, the battery pack further includes a current collector plate having a first opening and a second opening, the first opening connecting to a plurality of the first pipes, and the second opening connecting to the current collector pipes.

[0012] In some embodiments, the current collector plate further forms a third opening and a fourth opening, the third opening being connected to the first opening and the fourth opening being connected to the second opening, and the third opening and the fourth opening being not connected.

[0013] Secondly, this application provides a battery module, including a liquid-cooled module, the liquid-cooled module comprising: At least two first cooling plates, the at least two first cooling plates being arranged opposite to each other; and A piping assembly for conveying a cooling medium, the piping assembly comprising a plurality of first pipes, each first pipe being connected to a first inlet of each first cooling plate, each first pipe being of the same size such that the cooling medium is conveyed through each first pipe to the corresponding first cooling plate via the same path.

[0014] In some embodiments, the battery module further includes a cell assembly disposed between the two first cooling plates.

[0015] In some embodiments, there are two battery modules arranged side by side, with a first heat-conducting layer between them.

[0016] In some embodiments, each battery module further includes a fixing member disposed circumferentially around the battery module and surrounding the outside of the first cooling plate and the cell assembly, so that the first cooling plate is fixed to the cell assembly.

[0017] In some embodiments, each of the battery modules further includes a second thermally conductive layer, which is filled between the cell assembly and the first cooling plate.

[0018] In some embodiments, the battery module further includes two end fixing plates, which are disposed opposite to each other, and two first cooling plates are disposed on the two end fixing plates; Each of the end fixing plates has at least two clearance portions, which clearance portions avoid the first inlet or first outlet of each of the first cooling plates.

[0019] Secondly, embodiments of this utility model provide a battery pack, the battery pack including a battery module, the battery module including a liquid cooling module, the liquid cooling module including: At least two first cooling plates, the at least two first cooling plates being arranged opposite to each other; and A piping assembly for conveying a cooling medium, the piping assembly comprising a plurality of first pipes, each first pipe being connected to a first inlet of each first cooling plate, each first pipe being of the same size such that the cooling medium is conveyed through each first pipe to the corresponding first cooling plate via the same path.

[0020] The beneficial effects of the embodiments of this utility model are as follows: In the technical solution of this application, the liquid cooling module has high cooling efficiency and low risk of thermal runaway; the pipeline assembly is used to transport the cooling medium. The pipeline assembly includes multiple first cooling pipes, each pipe is connected to the first inlet of each first cooling plate, and each first pipe has the same size so that the cooling medium is transported to the corresponding first cooling plate through the first pipes in the same way. This setting makes the flow rate and flow of the cooling medium entering the first cooling plate basically consistent, and makes the cooling efficiency of the two first cooling plates basically the same, thereby ensuring that the temperature of the cell pack can be kept consistent and avoiding local overheating. This solves the technical problem in related technologies where uneven heat dissipation leads to large temperature differences in the battery pack and is prone to thermal runaway. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 These are schematic diagrams illustrating the structure of some embodiments of the battery pack provided in this application; Figure 2 yes Figure 1 A schematic diagram of the explosion of the battery pack; Figure 3 yes Figure 2 Schematic diagram of the central pipeline assembly; Figure 4 yes Figure 2 Schematic diagram of the structure of the second cooling plate; Figure 5 yes Figure 2 A schematic diagram of the structure of the battery module; Figure 6 yes Figure 5 Exploded view of the battery module; Figure 7 yes Figure 1 Top view of the battery pack (excluding the casing).

[0023] Explanation of icon numbers 100. Battery pack; 10. Battery module; 11. Cell assembly; 12. First cooling plate; 121. First inlet; 122. First outlet; 13. Fixing component; 14. End fixing plate; 20. Piping assembly; 21. First pipe; 22. Second pipe; 23. Third pipe; 24. Fourth pipe; 25. Current collector pipe; 30. Second cooling plate; 31. Second inlet; 32. Second outlet; 40. Current collector end plate; 41. First opening; 42. Second opening; 43. Third opening; 44. Fourth opening; 50. First heat-conducting layer; 60. Second heat-conducting layer; 70. Housing; 80. Connecting piece; 90. Terminal post. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0025] In related technologies, the modules of the battery pack share a cooling plate. Using a separate liquid cooling plate between non-modules will result in different heat dissipation efficiency between the edge and the middle of the battery pack, leading to an increase in the temperature difference between the two sides of the cell and affecting the uniformity of the cell temperature. At the same time, the heat dissipation efficiency of the module in the middle of the module will be lower than that of the edge, making the temperature of the already high-temperature middle module even higher and the temperature difference greater.

[0026] In view of this, the present invention proposes a battery pack 100. Figures 1 to 7 This is a schematic diagram of a structure of a battery pack 100 provided by the present invention. The battery pack 100 provided by the present invention has high cooling efficiency and can make the battery module 10 have a uniform temperature. The battery pack 100 will be described in detail below with reference to the main drawings.

[0027] The battery pack includes battery modules, which in turn include cell packs and liquid cooling modules. The liquid cooling modules are used to cool the cell packs and prevent them from overheating.

[0028] Please see Figure 1 and Figure 2 The liquid cooling module 101 includes at least two first cooling plates 12 and a piping assembly 20. The at least two first cooling plates 12 are arranged opposite to each other. The piping assembly 20 is used to transport cooling medium. The piping assembly 20 includes a plurality of first pipes 21. Each pipe is connected to a first inlet 121 of each first cooling plate 12. Each first pipe 21 has the same size so that the cooling medium is transported to the corresponding first cooling plate 12 through each first pipe 21 via the same path.

[0029] In the technical solution of this application, two first cooling plates 12 are configured on both sides of the cell pack 11 to cool the two sides of the cell pack 11, resulting in high cooling efficiency and low risk of thermal runaway. The pipeline assembly 20 is used to transport the cooling medium. The pipeline assembly 20 includes multiple first pipes 21, each of which is connected to the first inlet 121 of each first cooling plate 12. Each first pipe 21 has the same size so that the cooling medium is transported to the corresponding first cooling plate 12 through the first pipe 21 via the same path. This arrangement ensures that the flow rate and flow of the cooling medium entering the first cooling plate 12 are basically consistent, and that the cooling efficiency of the two first cooling plates 12 is basically the same. This ensures that the temperature of the cell pack 11 can be kept consistent, avoiding local overheating. This solves the technical problem in related technologies where uneven heat dissipation leads to a large temperature difference in the battery pack 100, which can easily cause thermal runaway.

[0030] It should be noted that, in this embodiment, "same path" means that the flow rate and volume of the cooling medium entering the two first cooling plates 12 are the same. Specifically, this can be understood as the length and distance between the two first pipes 21 being the same, thereby ensuring that the flow rate and volume of the cooling medium entering the first cooling plates 12 are essentially consistent, and thus ensuring that the cooling efficiency of the two first cooling plates 12 is essentially the same.

[0031] In some embodiments, one end of the pipe assembly 20 is connected to the outside, and the other end of the pipe assembly 20 is connected to the first cooling plate 12. The pipe assembly 20 transmits the external cooling medium to the first cooling plate 12, and the first cooling plate 12 absorbs the temperature of the battery cell assembly 11, thereby achieving a cooling effect.

[0032] The first cooling plate 12 has a first inlet 121 and a first outlet 122. The cooling medium enters the first cooling plate 12 from the first inlet 121 and flows out from the first outlet 122, completing the cooling cycle.

[0033] In some embodiments, please refer to Figure 2 and Figure 3 The piping assembly 20 also includes a manifold 25 and a plurality of second pipes 22. One end of each second pipe 22 is connected to the manifold, and the other end is connected to the first outlet 122 of the corresponding first cooling plate 12. Specifically, the cooling medium flows into the first cooling plate 12 from the plurality of first pipes 21. Since the plurality of first pipes 21 are of the same size, the flow rate and flow velocity of the cooling medium into the first cooling plate 12 are the same, ensuring that the cooling effect of the two first cooling plates 12 is consistent. After cooling, the cooling medium flows out from the first outlet 122 of the first cooling plate 12, flows into the corresponding second pipe 22, and then merges into the manifold 25 from the second pipe 22. Specifically, each second pipe 22 is of the same size, so that the path of the cooling medium from the corresponding second pipe 22 to the manifold 25 is the same. The multiple second pipes 22 are of the same size, so that the flow rate and flow of the cooling medium out of the first cooling plate 12 are the same. In this way, it can be ensured that the flow rate and flow of the cooling medium through the first cooling plate 12 are the same, ensuring that the cooling efficiency of the two first cooling plates 12 are consistent, so that the overall temperature of the cell assembly 11 is consistent and avoiding the situation of local overheating.

[0034] It should be noted that the multiple first pipes 21 are identical in size, meaning that the multiple first pipes 21 are of the same length and diameter, thus ensuring that the cooling medium is transported to the corresponding first cooling plate 12 via the same path. Similarly, the multiple second pipes 22 are identical in size, meaning that the multiple second pipes 22 are of the same length and diameter, thus ensuring that the cooling medium is transported to the corresponding collector pipe 25 via the same path. By controlling the dimensions of the first pipes 21 and the second pipes 22, the cooling medium passes through the first cooling plate 12 at a uniform speed, ensuring that the cooling efficiency of the two first cooling plates 12 is the same, and keeping the temperature of the cell assembly 11 basically consistent.

[0035] In some embodiments, please refer to Figure 2 and Figure 4 The liquid-cooled module 101 also includes a second cooling plate 30, at least one battery module 10 is disposed on the second cooling plate 30, and the housing 70 is covered on the second cooling plate 30. Specifically, the second cooling plate 30 serves as the bottom plate of the battery pack 100 to support the battery module 10, and at the same time, the second cooling plate 30 can also cool the bottom of the battery module 10.

[0036] Please see Figure 3 and Figure 4 The piping assembly 20 also includes a third pipe 23, which connects to the second inlet 31 of the second cooling plate 30. Specifically, the cooling medium enters the second cooling plate 30 through the third pipe 23 and exchanges heat with the bottom of the battery cell assembly 11 through the second cooling plate 30. More specifically, the two first cooling plates 12 and the second cooling plate 30 cool the battery cell assembly 11 from three sides, reducing the temperature of the battery cell assembly 11. Cooling from multiple sides results in higher cooling efficiency and prevents the battery cell assembly 11 from overheating and causing thermal runaway.

[0037] Furthermore, in some embodiments, the third pipe 23 has the same dimensions as the first pipe 21. Cooling medium flows from the multiple first pipes 21 into the first cooling plate 12 and from the third pipe 23 into the second cooling plate 30. Since the third pipe 23 has the same dimensions as the multiple first pipes 21, the flow rate and volume of the cooling medium flowing into the first cooling plate 12 and the second cooling plate 30 are the same, ensuring consistent cooling effects between the two first cooling plates 12 and the second cooling plate 30. This results in a consistent overall temperature for the battery cell assembly 11, preventing localized overheating.

[0038] In some embodiments, please continue reading Figure 3 and Figure 4The piping assembly 20 also includes a fourth pipe 24. One end of the fourth pipe 24 is connected to the second outlet 32 ​​of the second cooling plate 30, and the other end of the fourth pipe 24 is connected to the collector pipe 25. Specifically, the cooling medium flows into the second cooling plate 30 from multiple third pipes 23 to cool the battery cell assembly 11. After cooling, the cooling medium flows out from the second outlet 32 ​​of the second cooling plate 30 and into the corresponding fourth pipe 24, and then flows into the collector pipe 25 from the fourth pipe 24.

[0039] In some embodiments, the fourth pipe 24 has the same dimensions as the second pipe 22. The cooling medium in the first cooling plate 12 flows into the collector pipe 25 from the plurality of second pipes 22, and the cooling medium in the second cooling plate 30 flows into the collector pipe 25 from the fourth pipe 24. Since the fourth pipe 24 has the same dimensions as the plurality of second pipes 22, the flow rate and flow velocity of the cooling medium flowing out of the first cooling plate 12 and the second cooling plate 30 are the same, so that the cooling effect of the two first cooling plates 12 and the second cooling plate 30 are consistent, and the overall temperature of the battery cell assembly 11 is consistent, avoiding the occurrence of local overheating.

[0040] In some embodiments, please continue reading Figure 4 The outlet 122 of the second cooling plate 30 and the inlet 121 of the second cooling plate 30 are located on the same side. This arrangement can save the length of the third pipe 23 and the fourth pipe 24, save materials, and reduce costs.

[0041] Please see Figure 2 and Figure 7 In some embodiments, the liquid cooling module 101 further includes a collector plate 40, which is disposed within the housing 70. The collector plate 40 has a third opening 43 and a fourth opening 44, which serve as an outlet 122 and an inlet 121 for the cooling medium to flow into or out of the housing. Specifically, the collector plate 40 has a receiving cavity, and the sidewall of the receiving cavity has the third opening 43 and the fourth opening 44, where the third opening 43 is the inlet 121 and the fourth opening 44 is the outlet 122. A partition is provided within the receiving cavity to... The third opening 43 and the fourth opening 44 are separated. The pipe assembly 20 is connected to the manifold end plate 40. The cooling medium flows into the manifold end plate 40 from the third opening 43, flows into the corresponding first cooling plate 12 from the multiple first pipes 21, flows into the second cooling plate 30 from the third pipe 23, then flows into the second pipe 22 from the first cooling plate 12, and flows into the fourth pipe 24 from the second cooling plate 30. The third pipe 23 and the fourth pipe 24 are connected to the manifold pipe 25, which is connected to the manifold end plate 40. The cooling medium flows out from the fourth opening 44 of the manifold end plate 40.

[0042] Furthermore, in some embodiments, the collector end plate 40 is formed with a first opening 41 and a second opening 42, the first opening 41 being connected to a plurality of first pipes 21, the second opening 42 being connected to the collector pipe 25, the third opening 43 being connected to the first opening 41, and the fourth opening 44 being connected to the second opening 42.

[0043] This utility model also proposes a battery module 10, which includes the aforementioned liquid cooling module 101. The specific structure of the liquid cooling module 101 is described in the above embodiments. Since this battery module 10 adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0044] In some embodiments, the battery module 10 includes a cell assembly disposed between two first cooling plates 12. The cell assembly 11 includes multiple individual cells, which may include, but are not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries. The shape of the individual cells may include, but is not limited to, cylinders, flat bodies, cuboids, or other shapes. The individual cells may be packaged in, but are not limited to, cylindrical battery cells, cuboid battery cells, and pouch battery cells. Specifically, in this embodiment, the multiple individual cells are formed as cuboids, and the multiple individual cells are arranged side by side to form the cell assembly 11.

[0045] In some embodiments, the cell assembly 11 may also include other structures, which will not be described in detail here. For example, the cell assembly 11 may also include a busbar component for realizing electrical connections between multiple individual cells, such as in parallel, series, or mixed connections. Specifically, the busbar component can realize electrical connections between individual cells by connecting the electrode terminals of the individual cells. Further, the busbar component can be fixed to the electrode terminals of the individual cells by welding. The electrical energy of the multiple individual cells can be further led out through the housing 70 via a conductive mechanism.

[0046] In some embodiments, please continue reading Figure 2 The battery pack 100 also includes a housing 70, which has a receiving cavity. The battery module 10 is disposed in the receiving cavity. To facilitate installation, the modules in the battery pack 100 are divided into multiple battery modules 10. The multiple battery modules 10 are placed into the housing 70 at one time. These battery modules 10 can be connected in series, parallel or mixed connection.

[0047] Please see Figure 7 In some embodiments, there are two battery modules 10 arranged side by side. To ensure cooling efficiency, the pipe assembly 20 is located in the middle of the two battery modules 10 and is equidistant from the two battery modules 10.

[0048] Furthermore, in some embodiments, a first heat-conducting layer 50 is provided between the two battery modules 10. The first heat-conducting layer 50 is provided between two adjacent first cooling plates 12 of the two battery modules 10, and the first heat-conducting layer 50 can transfer heat so that the temperature of the two adjacent battery modules 10 remains consistent.

[0049] Please see Figure 5 and Figure 6 In some embodiments, each battery module 10 further includes a fixing member 13, which is arranged circumferentially around the battery module 10 and surrounds the outside of the first cooling plate 12 and the cell assembly 11 to fix the first cooling plate 12 to the cell assembly 11. Generally, to improve the energy density of the battery, the gap between the cell assembly 11 and the first cooling plate 12 is small. Therefore, the expansion force generated when the cell assembly 11 expands may act on the first cooling plate 12, causing the structure of the first cooling plate 12 to deform. When the expansion deformation is too large, the first cooling plate 12 may be at risk of fracture and failure. In some cases, the housing 70 contains multiple battery cells, and the combined expansion deformation of multiple battery cells exacerbates the risk of deformation of the first cooling plate 12 structure. For this reason, a fixing member 13 is generally provided to resist the expansion force of the battery cells. By fixing the first cooling plate 12 and the cell assembly 11 with the fixing member 13, the expansion force of the cell assembly 11 can be lowered, thus preventing the first cooling plate 12 from deforming.

[0050] Specifically, in some embodiments, the fastener 13 can be a steel strip, strap, or other structure to improve the reliability of the structure.

[0051] Please continue reading. Figure 6 Each battery module 10 includes two end fixing plates 14 and two first cooling plates 12. The two end fixing plates 14 are arranged opposite to each other, and the two first cooling plates 12 are disposed between the two end fixing plates 14. The two end fixing plates 14 and the two first cooling plates 12 are connected end to end to form a receiving portion, and the battery cell assembly 11 is disposed in the receiving portion. Each end fixing plate 14 is also provided with at least two clearance portions, which clearance portions clearance the first inlet 121 or the first outlet 122 of each first cooling plate 12.

[0052] In some embodiments, each battery module 10 further includes a second thermally conductive layer 60, which is filled between the cell assembly 11 and the first cooling plate 12. The second thermally conductive layer 60 can quickly transfer the temperature of the cell assembly 11 to the first cooling plate 12, thereby improving cooling efficiency.

[0053] In some embodiments, the first thermally conductive layer 50 includes thermally conductive silicone, and the second thermally conductive layer 60 includes thermally conductive silicone.

[0054] In some embodiments, please continue reading Figure 2 The battery pack 100 also includes two terminals 90, which are connected to the cell assembly 11 and serve as the two output terminals of the battery. The battery pack 100 also includes a connecting piece 80, which is used to connect two battery modules 10. The two battery modules 10 can be connected in series or in parallel, depending on the actual situation.

[0055] In this embodiment, the specific type of cooling medium is not limited and can be selected according to the actual application. For example, the cooling medium can be lubricating oil, water, cold air, alcohol, alcohol compounds, etc.

[0056] This utility model also proposes a battery pack, the battery pack 100 including the aforementioned battery module 10. The specific structure of the battery module 10 is as described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0057] Furthermore, this utility model also proposes an electrical device, which includes the aforementioned battery pack 100. The specific structure of the battery pack 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon here.

[0058] It is understood that the electrical equipment mentioned includes, but is not limited to, electric toys, power tools, electric vehicles, automobiles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Automobiles can be gasoline-powered vehicles, natural gas-powered vehicles, and new energy vehicles.

[0059] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A liquid-cooled module, comprising: include: At least two first cooling plates are arranged opposite to each other; as well as, A piping assembly for conveying a cooling medium, the piping assembly comprising a plurality of first pipes, each first pipe being connected to a first inlet of each first cooling plate, each first pipe being of the same size such that the cooling medium is conveyed through each first pipe to the corresponding first cooling plate via the same path.

2. The liquid-cooled module of claim 1, wherein, The piping assembly further includes a manifold and a plurality of second pipes, one end of each second pipe being connected to the manifold, and the other end of each second pipe being connected to the first outlet of the corresponding first cooling plate; Each of the second pipes has the same size, so that the cooling medium is transported to the manifold via the same path through the corresponding second pipe.

3. The liquid cooling module according to claim 2, characterized in that, It also includes a second cooling plate, with at least two first cooling plates disposed on the second cooling plate; The piping assembly also includes a third pipe connected to the second inlet of the second cooling plate, the third pipe having the same dimensions as the first pipe.

4. The liquid-cooled module of claim 3, wherein, The piping assembly further includes a fourth pipe, one end of which is connected to the second outlet of the second cooling plate, and the other end of which is connected to the manifold. The fourth pipe has the same dimensions as the second pipe.

5. The liquid-cooled module of claim 4, wherein, The second outlet of the second cooling plate and the second inlet of the second cooling plate are located on the same side.

6. The liquid cooling module according to claim 2, characterized in that, The plurality of first pipes have the same length, and the plurality of first pipes have the same diameter; and / or, The multiple second pipes have the same length and the multiple second pipes have the same diameter.

7. The liquid-cooled module of claim 2, wherein, It also includes a collector end plate, which has a first opening and a second opening. The first opening connects to a plurality of the first pipes, and the second opening connects to the collector pipes.

8. The liquid cooling module according to claim 7, characterized in that, The current collector end plate also has a third opening and a fourth opening, the third opening being connected to the first opening and the fourth opening being connected to the second opening, but the third opening and the fourth opening are not connected.

9. A battery module, characterized by Includes the liquid cooling module as described in any one of claims 1-8.

10. The battery module of claim 9, wherein, It also includes a battery cell assembly disposed between the two first cooling plates.

11. The battery module of claim 10, wherein, The battery module is provided in two, and the two battery modules are arranged side by side, with a first heat-conducting layer between the two battery modules.

12. The battery module of claim 10, wherein, Each of the battery modules further includes a fixing member, which is arranged circumferentially around the battery module and is disposed around the outside of the first cooling plate and the cell assembly, so as to fix the first cooling plate to the cell assembly.

13. The battery module according to claim 10, characterized in that, Each of the battery modules further includes a second thermally conductive layer, which is filled between the cell assembly and the first cooling plate.

14. The battery module according to claim 9, characterized in that, It also includes two end fixing plates, which are arranged opposite to each other, and two first cooling plates are disposed on the two end fixing plates; Each of the end fixing plates has at least two clearance portions, which clearance portions avoid the first inlet or first outlet of each of the first cooling plates.

15. A battery pack, characterized in that, This includes the liquid cooling module as described in any one of claims 1-8 or the battery module as described in any one of claims 9-13.

Images