Cold plate assembly and battery pack comprising same

Abstract

The utility model relates to the technical field of battery production, in particular to a cold plate assembly and a battery pack comprising the same, the cold plate assembly comprises a cold plate, a shunt body and an adapter, the cold plate is provided with a cooling channel; the shunting body is provided with a shunting channel for communicating with a cooling medium supply device; the switching body comprises a switching main body detachably connected with the flow dividing body and a gasket arranged below the switching main body, the switching main body is provided with a switching channel, and the gasket is connected with the switching main body and the cold plate in a brazing mode so that the cooling channel can be communicated with the flow dividing channel in a sealed mode through the switching channel. The adapter body is adopted to connect the shunt body and the cold plate instead of direct fixed connection of the shunt body and the cold plate, brazing fixation of the cold plate and the adapter body is realized, the assembly efficiency is high, the welding effect is good, the connection strength is high, the shunt body and the adapter body are detachably connected, the material selection range of the shunt body is wider, and the structural strength of the shunt body is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a cold plate assembly and a battery pack including the same. Background Art

[0002] As a means of transportation using clean energy, new energy vehicles have received increasing attention. The battery pack is the core energy source of new energy electric vehicles, and its safety and working reliability directly affect the use safety of new energy electric vehicles. In order to improve the service life and safety of the battery pack, active heating, cooling and other thermal management measures need to be taken to keep it working at an appropriate temperature. Among them, cold plates are currently widely used in battery pack cooling.

[0003] The cold plate has cooling channels, and a cooling medium supply device inputs cooling medium into the cooling channels through a fluid distributor. In the prior art, the cold plate and the fluid distributor are usually made of 3-series aluminum alloy. The 3-series aluminum alloy has good anti-rust performance, formability, weldability and corrosion resistance, and can be integrally connected by brazing. The assembly efficiency is high and the welding effect is good, ensuring the sealed connection between the fluid distributor and the cooling channels. However, when the fluid distributor is made of 3-series aluminum alloy, its structural strength is low, and there are problems such as easy bumping, scratching and assembly deformation, posing a hidden danger of cooling medium leakage. Since 6-series aluminum alloy cannot be integrally connected with 3-series aluminum alloy by brazing, the fluid distributor cannot be made of 6-series aluminum alloy with higher structural strength, which affects the service life of the fluid distributor and cannot ensure the use safety of the battery pack.

[0004] In view of this, the present application is specifically proposed. Utility Model Content

[0005] The present application provides a cold plate assembly and a battery pack including the same, aiming to solve the problem of how to improve the structural strength of the cold plate assembly to ensure the use safety of the battery pack.

[0006] On the one hand, the present application provides a cold plate assembly, including:

[0007] A cold plate having cooling channels;

[0008] A fluid distributor having a flow distribution channel for communicating with a cooling medium supply device;

[0009] An adapter body, which includes an adapter main body detachably connected to the fluid distributor and a gasket disposed below the adapter main body. The adapter main body has an adapter channel, and the gasket connects the adapter main body and the cold plate by brazing, so that the cooling channels are hermetically connected to the flow distribution channels through the adapter channels.

[0010] In some of these embodiments, the gasket includes:

[0011] Gasket body;

[0012] The first brazing layer is disposed between the gasket body and the cold plate and is used to connect with the cold plate by brazing;

[0013] The second brazing layer is disposed between the gasket body and the adapter body and is used to connect with the adapter body by brazing.

[0014] In some embodiments, the gasket body is made of 3 - series aluminum alloy; and / or

[0015] The first brazing layer is made of 4 - series aluminum alloy; and / or

[0016] The second brazing layer is made of 4 - series aluminum alloy.

[0017] In some embodiments, the thickness of the first brazing layer accounts for 8% - 12% of the total thickness of the gasket; and / or

[0018] The thickness of the second brazing layer accounts for 8% - 12% of the total thickness of the gasket.

[0019] In some embodiments, the adapter body and the fluid splitter are respectively provided with connection holes for fasteners to pass through, so that the adapter body is fixedly connected to the fluid splitter through the fasteners.

[0020] In some embodiments, a flexible sealing ring is sleeved on the adapter head, the flexible sealing ring is in interference fit with the adapter head, and the outer wall of the flexible sealing ring is sealingly attached to the inner wall of the inner interface.

[0021] In some embodiments, the adapter body is provided with an adapter head communicating with the adapter channel, the fluid splitter is provided with an inner interface communicating with the adapter channel, and the adapter head passes through the inner interface and is sealingly communicated with the diversion channel.

[0022] In some embodiments, the inner interface includes a first section and a second section, the second section is communicated with the diversion channel through the first section, and the inner diameter of the connection between the first section and the diversion channel is smaller than the outer diameter of the adapter head;

[0023] The adapter head passes through the second section and is sealingly attached to the inner wall of the first section, and the outer wall of the flexible sealing ring is sealingly attached to the inner wall of the second section.

[0024] In some embodiments, the fluid splitter is made of 6 - series aluminum alloy.

[0025] On the other hand, the present application also provides a battery pack, including the cold plate assembly as described above.

[0026] After adopting the above technical solution, the present application has the following beneficial effects compared with the prior art.

[0027] 1. In the cold plate assembly of the present application, a transfer body is used to connect the fluid distributor and the cold plate instead of directly fixedly connecting the fluid distributor and the cold plate, realizing brazing fixation of the cold plate and the transfer body. The assembly efficiency is high, the welding effect is good, and the connection strength is high, ensuring that the cooling channel is hermetically connected to the diversion channel through the transfer channel and preventing leakage of the cooling medium.

[0028] 2. In the cold plate assembly of the present application, the fluid distributor and the transfer body are detachably connected, which not only facilitates the maintenance and replacement of the fluid distributor, but also solves the problem of limited material selection range of the fluid distributor, ensures the structural strength of the fluid distributor, prevents scratching or assembly deformation of the fluid distributor, and improves the service life of the fluid distributor.

[0029] 3. The battery pack of the present application includes all the above advantages of the cold plate assembly because it includes the cold plate assembly of the present application. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of a cold plate assembly in an embodiment of the present application;

[0031] Figure 2 is an exploded view of a cold plate assembly in an embodiment of the present application;

[0032] Figure 3 is Figure 2 a partial enlarged view of part A in

[0033] Figure 4 is a schematic diagram of the connection structure of the fluid distributor and the transfer body in an embodiment of the present application;

[0034] Figure 5 is a top view of the connection structure of the fluid distributor and the transfer body in an embodiment of the present application;

[0035] Figure 6 is Figure 5 a cross-sectional view taken along the line B-B in

[0036] Figure 7 is a front view of the fluid distributor in an embodiment of the present application;

[0037] Figure 8 is a cross-sectional view taken along the line C-C in.

[0038] In the figure: 100, cold plate assembly; 110, cold plate; 111, upper plate; 1111, upper plate liquid passing hole; 1112, upper plate connection hole; 112, lower plate; 1121, first cooling channel; 1122, second cooling channel; 1123, lower plate connection hole; 120, fluid splitter; 121, first splitting channel; 122, second splitting channel; 123, liquid inlet joint; 124, liquid return joint; 125, transition channel; 126, internal interface; 1261, first section; 1262, second section; 130, adapter; 131, adapter body; 1311, first adapter channel; 1312, second adapter channel; 1313, first adapter joint; 1314, second adapter joint; 1315, adapter connection hole; 132, gasket; 1321, gasket body; 1322, first brazing layer; 1323, second brazing layer; 1324, gasket liquid passing hole; 1325, gasket connection hole; 140, fastener; 150, flexible sealing ring. Detailed implementation manners

[0039] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0040] In an embodiment of the present application, a cold plate assembly 100 is provided for cooling a battery pack. For the specific structure of the cold plate assembly 100, please refer to Figure 1 and Figure 2 , which includes a cold plate 110, a fluid splitter 120 and an adapter 130. Among them, the cold plate 110 has a cooling channel for the cooling medium to flow through the cooling channel; the fluid splitter 120 is arranged above the cold plate 110, and the fluid splitter 120 has a splitting channel for communicating with a cooling medium supply device, and the cooling medium supply device supplies the cooling medium to the splitting channel; the adapter 130 is arranged between the cold plate 110 and the fluid splitter 120. The adapter 130 includes an adapter body 131 and a gasket 132. The adapter body 131 has an adapter channel. The adapter body 131 is detachably connected to the fluid splitter 120 to seal the communication between the splitting channel and the adapter channel; the gasket 132 is arranged below the adapter body 131, and a gasket liquid passing hole 1324 is arranged on the gasket 132. The gasket 132 is connected to the adapter body 131 and the cold plate 110 by brazing, so that the cooling channel is hermetically connected to the adapter channel through the gasket liquid passing hole 1324 for cooling the battery pack.

[0041] According to the cold plate assembly 100 of the application, an adapter 130 is used to connect the fluid splitter 120 and the cold plate 110 instead of directly fixedly connecting the fluid splitter 120 and the cold plate 110. The cold plate 110 and the adapter 130 are brazed and fixed, with high assembly efficiency, good welding effect, and high connection strength. Moreover, the fluid splitter 120 and the adapter 130 are detachably connected, which not only facilitates the maintenance and replacement of the fluid splitter 120 but also solves the problem of limited material selection range of the fluid splitter 120 and ensures the structural strength of the fluid splitter 120.

[0042] Exemplarily, the fluid splitter 120 is made of 6-series aluminum alloy. The 6-series aluminum alloy has high strength, light weight, good corrosion resistance, excellent welding performance, and good formability and process performance, which can improve the structural strength of the fluid splitter 120, prevent it from being scratched or deformed during assembly, and extend its service life. However, the 6-series aluminum alloy cannot be brazed to the 3-series aluminum alloy. The fluid splitter 120 and the adapter body 131 are detachably connected and connected to the cold plate 110 through a gasket 132, which not only realizes the brazing and fixing of the cold plate 110 and the adapter body 131 but also solves the problem of limited material selection range of the fluid splitter 120 and ensures the structural strength of the fluid splitter 120.

[0043] For the specific structure of the cold plate 110, please refer to Figures 1 to 3 , which includes an upper plate 111 and a lower plate 112 arranged below the upper plate 111. Among them, a cooling channel is formed between the upper plate 111 and the lower plate 112, and upper plate liquid passing holes 1111 communicating with the transfer channel are arranged on the upper plate 111, so that the transfer channel is hermetically communicated with the cooling channel through the upper plate liquid passing holes 1111.

[0044] As an optional implementation manner not shown, the specific structure of the lower plate 112 includes a lower plate body and a lower plate brazing layer arranged above the lower plate body. Among them, the lower plate brazing layer is used to connect with the upper plate 111 by brazing. Specifically, the lower plate brazing layer belongs to a solder with a lower melting point, and its melting point is lower than that of the lower plate body. After heating, the lower plate body does not melt, and the lower plate brazing layer melts and fills the gap between the upper plate 111 and the lower plate 112, thereby hermetically sealing the upper plate 111 and the lower plate 112 to form a cooling channel.

[0045] Preferably, the thickness of the lower plate brazing layer of the lower plate 112 accounts for 8% - 12% of the total thickness of the lower plate 112, ensuring that the upper plate 111 and the lower plate 112 can be firmly connected as a whole.

[0046] Exemplarily, the lower layer plate body is made of 3-series aluminum alloy, the lower plate brazing layer is made of 4-series aluminum alloy, and the lower layer plate 112 is made of 3-series aluminum alloy. After heating, the lower layer plate body does not melt, and the lower plate brazing layer melts and fills the gap between the upper layer plate 111 and the lower layer plate 112, firmly connecting the upper layer plate 111 and the lower layer plate 112 together. Of course, the lower layer plate 112 can also be other solders commonly used in the prior art, such as silver solder, copper solder, and nickel solder. The upper layer plate 111 and the lower layer plate body can also be other weldable metal materials, such as 1-series aluminum alloy, as long as they can firmly connect the upper layer plate 111 and the lower layer plate 112 together.

[0047] For the specific structure of the gasket 132, please refer to Figure 4 and Figure 6 , which includes a gasket body 1321, a first brazing layer 1322, and a second brazing layer 1323. Among them, the first brazing layer 1322 is disposed between the gasket body 1321 and the cold plate 110 and is used to connect to the cold plate 110 by brazing; the second brazing layer 1323 is disposed between the gasket body 1321 and the adapter body 131 and is used to connect to the adapter body 131 by brazing. Specifically, the fluid distributor 120 and the upper layer plate 111 are arranged vertically, the adapter body 131 is disposed above the second brazing layer 1323, and the upper layer plate 111 is disposed below the first brazing layer 1322. The first brazing layer 1322 and the second brazing layer 1323 are solders with relatively low melting points, and their melting points are both lower than that of the gasket body 1321. After heating, the first brazing layer 1322 and the second brazing layer 1323 melt, and the gasket body 1321 does not melt, filling the gaps among the cold plate 110, the gasket 132, and the adapter body 131, firmly connecting the upper layer plate 111, the gasket 132, and the adapter body 131 together, so that the cooling channel is hermetically connected to the diversion channel through the transfer channel.

[0048] Preferably, the thickness of the first brazing layer 1322 of the gasket 132 accounts for 8% - 12% of the total thickness of the gasket 132, ensuring a firm integral connection between the upper layer plate 111 and the gasket 132.

[0049] Preferably, the thickness of the second brazing layer 1323 of the gasket 132 accounts for 8% - 12% of the total thickness of the gasket 132, ensuring a firm integral connection between the gasket 132 and the fluid distributor 120.

[0050] Exemplarily, the gasket body 1321 is made of 3-series aluminum alloy, the first brazing layer 1322 is made of 4-series aluminum alloy, and the second brazing layer 1323 is made of 4-series aluminum alloy. After heating, the gasket 132 itself does not melt, and after the first brazing layer 1322 and the second brazing layer 1323 melt, they fill the gaps between the upper layer plate 111, the gasket 132, and the adapter body 131, firmly connecting the adapter 130 and the upper layer plate 111 together. Of course, the first brazing layer 1322 and the second brazing layer 1323 can also be other brazing materials commonly used in the prior art, such as silver brazing material, copper brazing material, and nickel brazing material. The gasket body 1321 and the cold plate 110 can also be other weldable metal materials, such as 1-series aluminum alloy, as long as they can firmly connect the adapter 130 and the upper layer plate 111 together.

[0051] As Figure 3 and Figure 4 、 Figure 6 and Figure 8 As shown, connection holes for the fastener 140 to pass through are respectively provided on the adapter body 131 and the fluid splitter 120, so that the adapter body 131 is fixedly connected to the fluid splitter 120 through the fastener 140. Specifically, a lower plate connection hole 1123 is provided on the lower layer plate 112, an upper plate connection hole 1112 is provided on the upper layer plate 111, a gasket connection hole 1325 is provided on the gasket 132, a connection hole 1315 is provided on the adapter body 131, and an inner interface 126 is provided on the fluid splitter 120. After the fastener 140 passes through the lower plate connection hole 1123, the upper plate connection hole 1112, the gasket connection hole 1325, and the connection hole 1315 from bottom to top, it is inserted into the inner interface 126 to achieve the sealed connection of the lower layer plate 112, the upper layer plate 111, the adapter 130, and the fluid splitter 120.

[0052] As Figure 4 and Figure 6 As shown, a connector communicating with the transfer channel is provided at the top of the adapter body 131, and an inner interface 126 communicating with the split channel is provided at the bottom of the fluid splitter 120. The connector passes through the inner interface 126 and is in sealed communication with the split channel. The outer wall of the connector is in sealed fit with the inner wall of the inner interface 126 to achieve the sealed communication between the connector and the split channel, so that the cooling medium can flow quickly through the connector in the split channel and the transfer channel. The flow of the cooling medium is smoother, the flow rate of the cooling medium is increased, and thus the cooling efficiency of the cold plate assembly 100 is ensured and the cooling effect of the battery pack is improved.

[0053] As Figure 4 and Figure 6As shown, a flexible sealing ring 150 is sleeved on the adapter. The flexible sealing ring 150 is in interference fit with the adapter. The outer wall of the flexible sealing ring 150 is in sealing fit with the inner wall of the inner interface 126. By providing the flexible sealing ring 150 between the adapter body 131 and the fluid splitter 120, the sealing performance between the adapter body 131 and the fluid splitter 120 is better, avoiding the escape of the cooling medium through the connection between the adapter body 131 and the fluid splitter 120, thereby ensuring the sealing performance of the cold plate assembly 100.

[0054] As Figure 6 and Figure 8 shown, the inner interface 126 includes a first section 1261 and a second section 1262. The second section 1262 is communicated with the diversion channel through the first section 1261. The inner diameter at the connection between the first section 1261 and the diversion channel is smaller than the outer diameter of the adapter. The adapter passes through the second section 1262 and is in sealing fit with the inner wall of the first section 1261. The outer wall of the flexible sealing ring 150 is in sealing fit with the inner wall of the second section 1262. Among them, the inner diameter at the connection between the first section 1261 and the diversion channel is smaller than the outer diameter of the adapter. The adapter is inserted into the inner interface 126 and is in sealing communication with the diversion channel. The inlet end of the adapter is butt-connected and communicated with the outlet end of the diversion channel. The flexible sealing ring 150 is accommodated in the second section 1262 and is in interference fit with the second section 1262, further improving the sealing performance between the fluid splitter 120 and the adapter body 131.

[0055] As Figure 1 , Figure 2 and Figures 4 to 8 shown, an outer joint connected to the cooling medium supply device is provided on the fluid splitter 120. The outer joint is communicated with the diversion channel, so that the cooling medium supply device conveys the cooling medium into the diversion channel through the outer joint, or the cooling medium in the diversion channel flows back to the cooling medium supply device through the outer joint.

[0056] As Figure 4 , Figure 6 and Figure 8 shown, the outer joint includes a liquid inlet joint 123 and a liquid return joint 124 arranged at intervals along the height direction of the fluid splitter 120. The diversion channel includes a first diversion channel 121 and two second diversion channels 122. The two second diversion channels 122 are arranged on both sides of the first diversion channel 121 at intervals along the length direction of the fluid splitter 120. The two second diversion channels 122 are communicated through a transition channel 125. The liquid inlet joint 123 is communicated with the first diversion channel 121. The liquid return joint 124 is communicated with the second diversion channel 122 through the transition channel 125.

[0057] As Figure 3 , Figure 4 , Figure 6 and Figure 8As shown, the cooling channels include a first cooling channel 1121 and second cooling channels 1122 arranged on both sides of the first cooling channel 1121; the transfer channels include a first transfer channel 1311 and two second transfer channels 1312, and the two second transfer channels 1312 are arranged on both sides of the first transfer channel 1311 at intervals along the length direction of the transfer body 131; the adapter includes a first adapter 1313 and two second adapters 1314, and the two second adapters 1314 are arranged on both sides of the first adapter 1313 at intervals along the length direction of the transfer body 131; the first cooling channel 1121 communicates with the first transfer channel 1311 through the corresponding upper plate liquid passing holes 1111 and gasket liquid passing holes 1324, the first transfer channel 1311 communicates with the first diversion channel 121 through the first adapter 1313, while the second cooling channel 1122 communicates with the second transfer channel 1312 through the corresponding upper plate liquid passing holes 1111 and gasket liquid passing holes 1324, and the second transfer channel 1312 communicates with the second diversion channel 122 through the second adapter 1314.

[0058] For the output of the cooling medium, the cooling medium output by the cooling medium supply device flows into the first diversion channel 121 through the liquid inlet joint 123, and then flows into the first transfer channel 1311 through the first adapter 1313, and further flows into the first cooling channel 1121 through the corresponding gasket liquid passing holes 1324 and upper plate liquid passing holes 1111 for cooling the battery pack.

[0059] The cooling medium flows in the cooling channels. For the return of the cooling medium, the cooling medium flowing in the first cooling channel 1121 flows into the second cooling channels 1122 on both sides, and then returns to the second transfer channel 1312 through the corresponding upper plate liquid passing holes 1111 and gasket liquid passing holes 1324, and further flows into the second diversion channels 122 on both sides through the second adapter 1314, and finally converges into the transition channel 125 and is recovered by the cooling medium supply device through the liquid return joint 124.

[0060] In the embodiment of the present application, a battery pack is further provided, which includes the cold plate assembly 100 in the above embodiment, and thus includes all the advantages of the cold plate assembly 100, which will not be elaborated here.

[0061] The battery pack in the present application is applied to an energy storage device, and the energy storage device can be a device with a battery swapping function such as a vehicle or a working machine.

[0062] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0063] In addition, the terms "upper" and "lower" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "upper" and "lower" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0064] In the present application, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0065] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as a limitation to the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A cold plate assembly, characterized in that: include: a cold plate having cooling channels; A flow divider, wherein the flow divider has a flow divider channel for connecting to a cooling medium supply device; The adapter body includes an adapter main body detachably connected to the flow diverter and a gasket arranged below the adapter main body, the adapter main body has a adapter channel, and the gasket connects the adapter main body and the cold plate by brazing so that the cooling channel is sealed and connected with the flow diverter channel through the adapter channel.

2. The cold plate assembly according to claim 1, characterized in that The gasket comprises: Gasket body; a first brazing layer, the first brazing layer being disposed between the gasket body and the cold plate and being used for connecting with the cold plate by brazing; A second brazing layer, wherein the second brazing layer is disposed between the gasket body and the transition body, and is used for connecting with the transition body by brazing.

3. The cold plate assembly according to claim 2, characterized in that The gasket body is made of 3 series aluminum alloy; and / or The first brazing layer is made of 4 series aluminum alloy; and / or The second brazing layer is made of 4 series aluminum alloy.

4. The cold plate assembly according to claim 2, characterized in that The thickness of the first brazing layer accounts for 8% to 12% of the total thickness of the gasket; and / or The thickness of the second soldering layer accounts for 8% to 12% of the total thickness of the gasket.

5. The cold plate assembly according to claim 1, characterized in that The adapter body and the flow divider are respectively provided with connection holes for fasteners to pass through, so that the adapter body is fastened and connected to the flow divider through the fasteners.

6. The cold plate assembly according to claim 1, characterized in that The adapter body is provided with an adapter connected to the adapter channel, the flow diverter is provided with an inner interface connected to the adapter channel, and the adapter is sealed and connected to the diversion channel through the inner interface.

7. The cold plate assembly according to claim 6, characterized in that A flexible sealing ring is sleeved on the adapter, the flexible sealing ring is interference fit with the adapter, and the outer wall of the flexible sealing ring is sealingly fitted with the inner wall of the inner interface.

8. The cold plate assembly according to claim 7, characterized in that The inner interface comprises a first section and a second section, the second section is connected to the diversion channel through the first section, and the inner diameter of the connection between the first section and the diversion channel is smaller than the outer diameter of the adapter; The adapter passes through the second section and is sealed against the inner wall of the first section, and the outer wall of the flexible sealing ring is sealed against the inner wall of the second section.

9. The cold plate assembly according to any one of claims 1 to 8, characterized in that The flow divider is made of 6 series aluminum alloy.

10. A battery pack, characterized in that: Comprising the cold plate assembly according to any one of claims 1 to 9.

Images