Cooling assembly and battery module

Abstract

The utility model discloses a cooling assembly and a battery module, and belongs to the technical field of battery cooling. The cooling assembly comprises a cooling plate, a first end cover and a segmentation sliding plate; the cooling plate is provided with a plurality of fluid channels arranged in the first direction. The first end cover is connected with one end of the cooling plate; the dividing sliding plate is in sliding connection with the inner cavity of the first end cover, the dividing sliding plate can divide the inner cavity of the first end cover into a water inlet cavity and a water outlet cavity, the water inlet cavity communicates with the multiple fluid channels, and the water outlet cavity communicates with the multiple fluid channels; the partition sliding plate can slide between the water inlet cavity and the water outlet cavity. According to the invention, through the sliding connection of the segmentation sliding plate, the segmentation sliding plate can slide under the liquid temperature difference between the water inlet cavity and the water outlet cavity, so that the proportion of the water inlet area to the water outlet area in the cooling plate is changed, the on-way temperature difference of the cooling liquid can be reduced, and the uniform heat exchange between the battery cells is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery cooling, in particular to a cooling assembly and a battery module. BACKGROUND

[0002] With the development of new energy technology, at present, electric vehicles have been widely used in society, and generally, the battery pack of an electric vehicle includes a battery module, a battery management system and a cooling system.

[0003] At present, some battery modules are integrated with cooling assemblies such as cooling plates, and cooling liquid flows in the cooling plate through pipelines to take away the heat generated by battery cells (i.e. battery cells), and is released to the external environment through an external radiator or cooling system.

[0004] The existing cooling assembly adopting a U-shaped loop is widely applied to battery modules. In the case of long-distance transportation of cooling liquid, the temperature difference of the cooling liquid along the path is large, which is not conducive to the uniform heat exchange of multiple battery cells, and limits the charge and discharge performance of the battery cells. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a cooling assembly and a battery module. The problem of large temperature difference along the path of the existing U-shaped loop cooling assembly can be solved, and the technical solution is as follows:

[0006] On the one hand, a cooling assembly is provided, comprising: a cooling plate, a first end cover and a partitioning slide plate;

[0007] The cooling plate has a plurality of fluid channels arranged along a first direction;

[0008] The first end cover is connected to one end of the cooling plate, and the internal cavity of the first end cover is in communication with one end of the plurality of fluid channels;

[0009] The partitioning slide plate is in sliding connection with the internal cavity of the first end cover, and the partitioning slide plate can divide the internal cavity of the first end cover into a water inlet cavity and a water outlet cavity, the water inlet cavity is in communication with one end of a part of the plurality of fluid channels, and the water outlet cavity is in communication with one end of another part of the plurality of fluid channels;

[0010] The partitioning slide plate can slide between the water inlet cavity and the water outlet cavity.

[0011] Optionally, the first end cover comprises: an end cover body connected to one end of the cooling plate, and a sliding rod fixed in the internal cavity of the end cover body;

[0012] The partitioning slide plate is in sliding connection with the sliding rod, and the length direction of the sliding rod is parallel to the first direction.

[0013] Optionally, the dividing slide plate has a connecting through hole that matches the shape of the sliding rod, and the dividing slide plate is sleeved on the sliding rod through the connecting through hole.

[0014] Optionally, the first end cap further includes: a first fixing member and a second fixing member arranged along the first direction, wherein the first fixing member and the second fixing member are both fixed in the internal cavity of the end cap body;

[0015] One end of the sliding rod is connected to the first fixing member, and the other end of the sliding rod away from the first fixing member is connected to the second fixing member.

[0016] Optionally, the first fixing member has a first fixing groove on the side facing the second fixing member, and one end of the sliding rod is connected to the first fixing member in the first fixing groove;

[0017] The second fixing member has a second fixing groove on the side facing the first fixing member, and the end of the sliding rod away from the first fixing member is connected to the second fixing member in the second fixing groove.

[0018] Optionally, the sliding rod includes: a sliding rod body and at least one telescopic part, wherein at least one telescopic part is connected to at least one end of the sliding rod body, and the telescopic part is capable of extending and retracting along the first direction.

[0019] Optionally, the dividing slide plate has a sliding surface that contacts the inner wall of the internal cavity of the first end cap.

[0020] Optionally, the sliding surface is an arc-shaped convex surface.

[0021] Optionally, the first end cap also has a water inlet and a water outlet, the water inlet being connected to the water inlet cavity, the water outlet being connected to the water outlet cavity, and the water inlet and the water outlet being arranged along the first direction.

[0022] On the other hand, a battery module is provided, comprising: a plurality of battery cells, and at least one cooling component as described above;

[0023] The sides of the plurality of battery cells are in contact with the sides of the cooling plate.

[0024] The beneficial effects of the technical solutions provided in this application are:

[0025] By setting the split sliding plate in sliding connection with the inner cavity of the first end cover, the inner cavity of the first end cover is divided into a water inlet cavity and a water outlet cavity. In the case that the liquid temperature in the water outlet cavity is higher than that in the water inlet cavity, the liquid in the water outlet cavity will expand due to the higher temperature, and the pressure generated by the thermal expansion of the liquid in the water outlet cavity will be greater than that of the liquid in the water inlet cavity, so that the split sliding plate slides to the water inlet cavity side. In this way, the water inlet cavity is reduced, and the number of fluid channels communicating with the water inlet cavity is reduced, so that the ratio of the water inlet area to the water outlet area in the cooling plate can be changed, the temperature difference of the cooling liquid along the way can be reduced, and the uniform heat exchange between the battery cells can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a structural schematic diagram of a cooling assembly of a U-shaped loop;

[0028] Figure 2 It is a structural schematic diagram of a cooling assembly provided by the embodiment of the present application;

[0029] Figure 3 It is a structural schematic diagram of a battery module provided by the embodiment of the present application;

[0030] Figure 4 It is a structural schematic diagram of another battery module provided by the embodiment of the present application;

[0031] Figure 5 It is a structural schematic diagram of a first end cover provided by the embodiment of the present application;

[0032] Figure 6 It is Figure 5 It is a sectional view of the first end cover shown in the A-A' direction;

[0033] Figure 7 It is a structural schematic diagram of a cooling plate and a fluid channel provided by the embodiment of the present application;

[0034] Figure 8 It is a structural schematic diagram of a second end cover provided by the embodiment of the present application;

[0035] Figure 9 It is a structural schematic diagram of a heat exchange area of a cooling plate provided by the embodiment of the present application;

[0036] Figure 10A temperature distribution schematic diagram of the cooling plate provided by the embodiment of the present application;

[0037] Figure 11 Another temperature distribution schematic diagram of the cooling plate provided by the embodiment of the present application;

[0038] Figure 12 A structure schematic diagram of the split sliding plate provided by the embodiment of the present application;

[0039] Figure 13 A structure schematic diagram of the fixing member and the sliding rod provided by the embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiment of the present application will be further described in detail below with reference to the drawings.

[0041] Please refer to Figure 1 , Figure 1 A structure schematic diagram of a cooling assembly of a U-shaped circuit. The cooling assembly 00 of the U-shaped circuit comprises a first end cover 10, a cooling plate 20 and a second end cover 30. The first end cover 10 is provided with a fixedly connected partition plate 11, which divides the internal cavity of the first end cover 10 into a fixed-size water inlet cavity 12a and a water outlet cavity 12b, generally with an area ratio of 50%:50% for water inlet and outlet. The cooling plate 20 has a plurality of fluid channels, one half of one end of the plurality of fluid channels is in communication with the water inlet cavity 12a, and the other half is in communication with the water outlet cavity 12b, the other end of the plurality of fluid channels is in communication with the internal cavity 31 of the second end cover 30, and the cooling liquid in the circuit of the cooling assembly 00 is in a U shape. The cooling assembly 00 is assembled with a plurality of battery cells to form a battery module. The cooling / heating effect of the above-mentioned U-shaped circuit cooling assembly 00 on the plurality of battery cells has certain differences in the along-path direction (such as the left-right direction in Figure 1 , that is, the cooling assembly 00 has different heating effects on any two battery cells, resulting in temperature differences between the battery cells, which can be defined as along-path temperature differences, thereby affecting the uniform heating of the plurality of battery cells. In this way, battery cells of different temperatures correspond to different charging and discharging performances, ultimately affecting the performance of the battery module.

[0042] Please refer to Figures 2 to 8 , Figure 2 A structure schematic diagram of the cooling assembly provided by the embodiment of the present application, Figure 3 A structure schematic diagram of a battery module provided by the embodiment of the present application, Figure 4 Another structure schematic diagram of a battery module provided by the embodiment of the present application, Figure 5 A structure schematic diagram of the first end cover provided by the embodiment of the present application, Figure 6 A structure schematic diagram of the first end cover provided by the embodiment of the present application, Figure 5A cross-sectional view of the first end cover in the A-A' direction is shown, Figure 7 A structural schematic diagram of a cooling plate and a fluid channel provided in an embodiment of the present application is shown, Figure 8 A structural schematic diagram of a second end cover provided in an embodiment of the present application is shown.

[0043] In an embodiment of the present application, the cooling assembly 000 can include a cooling plate 200, a first end cover 100, and a partitioning slide plate 400. The battery module can include a plurality of battery cells 500 and at least one cooling assembly 000 provided in an embodiment of the present application, and the side surface of the plurality of battery cells 500 is in contact with the side surface of the cooling plate 200.

[0044] The cooling plate 200 has a plurality of fluid channels 201 arranged along a first direction X.

[0045] The first end cover 100 is connected to one end of the cooling plate 200, and the internal cavity 102 of the first end cover 100 is in communication with one end of the plurality of fluid channels 201, and the other ends of the plurality of fluid channels 201 are in communication with each other.

[0046] The partitioning slide plate 400 is in sliding connection with the internal cavity 102 of the first end cover 100, and the partitioning slide plate 400 can divide the internal cavity 102 of the first end cover 100 into a water inlet cavity 102a and a water outlet cavity 102b. The water inlet cavity 102a is in communication with one end of a part of the plurality of fluid channels 201, and the water outlet cavity 102b is in communication with one end of another part of the plurality of fluid channels 201.

[0047] The partitioning slide plate 400 can slide between the water inlet cavity 102a and the water outlet cavity 102b, for example, the sliding direction of the partitioning slide plate 400 is parallel to the first direction X.

[0048] There are many ways to realize the communication between the other ends of the plurality of fluid channels 201. For example, an end cover can be arranged at the other end of the cooling plate 200 to communicate the other ends of any two fluid channels 210. For another example, the other end of the cooling plate 200 is provided with a communication groove and an encapsulation cover plate, the other ends of the plurality of fluid channels 201 are in communication with the communication groove, and the encapsulation cover plate can seal the communication groove to form a sealed cavity, thereby realizing the communication between the other ends of any two fluid channels 210.

[0049] In some possible implementation manners, as shown in Figure 2 The cooling assembly 000 can further include a second end cover 300, the second end cover 300 is connected to the other end of the cooling plate 200, and the internal cavity 301 of the second end cover 300 is in communication with the other ends of the plurality of fluid channels 201.

[0050] As shown in Figure 3 andFigure 4 As shown, the battery cell 500 of the embodiment of the present application can be a cylindrical battery cell or a square battery cell, and the shape of the cooling plate 200 is matched with the shape of the battery cell 500, for example, in the case of the cylindrical battery cell, the cooling plate 200 can adopt a serpentine plate structure; and for example, in the case of the square battery cell, the cooling plate 200 can adopt a straight plate structure. Figure 3 As shown, the battery cell 500 of the embodiment of the present application can be a cylindrical battery cell or a square battery cell, and the shape of the cooling plate 200 is matched with the shape of the battery cell 500, for example, in the case of the cylindrical battery cell, the cooling plate 200 can adopt a serpentine plate structure; and for example, in the case of the square battery cell, the cooling plate 200 can adopt a straight plate structure. Figure 4 As shown, the battery cell 500 of the embodiment of the present application can be a cylindrical battery cell or a square battery cell, and the shape of the cooling plate 200 is matched with the shape of the battery cell 500, for example, in the case of the cylindrical battery cell, the cooling plate 200 can adopt a serpentine plate structure; and for example, in the case of the square battery cell, the cooling plate 200 can adopt a straight plate structure.

[0051] In the case of the cylindrical battery cell, the cooling plate 200 can adopt a serpentine plate structure; and for example, in the case of the square battery cell, the cooling plate 200 can adopt a straight plate structure.

[0052] The principle of adjusting the ratio of the water inlet area and the water outlet area to improve the temperature difference along the way is described below.

[0053] Please refer to Figures 9 to 11 , Figure 9 the structural schematic diagram of the heat exchange region of the cooling plate provided by the embodiment of the present application, Figure 10 the temperature distribution schematic diagram of the cooling plate provided by the embodiment of the present application, Figure 11 the another temperature distribution schematic diagram of the cooling plate provided by the embodiment of the present application. As shown in Figure 9 the region of the cooling plate 200 corresponding to the contact with the battery cell 500 can be divided into a plurality of heat exchange regions 202 along the extension direction of the fluid channel 201, and each heat exchange region 202 can be divided into a first sub heat exchange region 202a and a second sub heat exchange region 202b in the flow direction of the cooling liquid, wherein the first sub heat exchange region 202a is the region in the fluid channel 201 communicating with the water inlet cavity 102a and exchanging heat with the battery cell 500; and the second sub heat exchange region 202b is the region in the fluid channel 201 communicating with the water outlet cavity 102b and exchanging heat with the battery cell 500.

[0054] As shown, the battery cell 500 of the embodiment of the present application can be a cylindrical battery cell or a square battery cell, and the shape of the cooling plate 200 is matched with the shape of the battery cell 500, for example, in the case of the cylindrical battery cell, the cooling plate 200 can adopt a serpentine plate structure; and for example, in the case of the square battery cell, the cooling plate 200 can adopt a straight plate structure. Figure 10As shown, the number of fluid channels 201 in communication with the water inlet cavity 102a accounts for N1 (corresponding to the water inlet ratio), and the number of fluid channels 201 in communication with the water inlet cavity 102a accounts for N2 (corresponding to the water outlet ratio). In the case of the water inlet and outlet ratio N1:N2 being 50:50, according to the temperature T1 of the first sub-heat exchange region 202a and the temperature T2 of the second sub-heat exchange region 202b of each heat exchange region 202, the equivalent temperature T of each heat exchange region 202 can be calculated. For example, T = T1 x water inlet ratio + T2 x water outlet ratio, and the equivalent temperature as shown Figure 10

[0055] For the case of the water inlet and outlet ratio being 50:50, the water inlet and outlet flow rates are the same, because the water flow first flows into the fluid channel 201 corresponding to the first sub-heat exchange region 202a, the temperature difference AT1 between the battery and the first sub-heat exchange region 202a is larger, and the temperature difference AT2 between the battery and the second sub-heat exchange region 202b is smaller. The heat exchange efficiency V is positively correlated with the heat exchange area S, the cooling liquid flow rate v, and the temperature difference AT, i.e., T∝(S, v, AT). In the case of the same heat exchange area and the same flow rate, the heat exchange rate V1 of the first sub-heat exchange region 202a is faster, and the heat exchange rate V2 of the second sub-heat exchange region 202b is lower, so that the temperature of the first sub-heat exchange region 202a rises by T1 degrees per unit time; the temperature of the second sub-heat exchange region 202b rises by T2 degrees per unit time, and T1 is greater than T2 degrees. Based on this, the temperature difference of the cooling liquid from the water inlet cavity 102a to the internal cavity 301 of the second end cover 300 (exemplarily 25℃-20℃=5℃) is different from the internal temperature difference from the internal cavity 301 of the second end cover 300 to the water outlet cavity 102b (exemplarily 28℃-25℃=3℃).

[0056] It can be assumed that the temperature difference between every two first sub-heat exchange regions 202a is the same, and the temperature difference between every two second sub-heat exchange regions 202b is the same, so that the equivalent temperature of the six heat exchange regions 202 as shown Figure 10 It can be assumed that the temperature difference between every two first sub-heat exchange regions 202a is the same, and the temperature difference between every two second sub-heat exchange regions 202b is the same, so that the equivalent temperature of the six heat exchange regions 202 as shown

[0057] As shown, the temperature difference between the equivalent temperatures of the first heat exchange region 202 on the left and the first heat exchange region 202 on the right is 1℃. Figure 11 ​As shown, when the water inlet and outlet ratio is 50%:50%, the temperature of the water outlet cavity 102b is greater than that of the water inlet cavity 102a, and the pressure generated by the thermal expansion of the liquid in the water outlet cavity 102b pushes the partitioning slide 400 to move in the direction of the water inlet cavity 102a. Since the flow rates of the water inlet and outlet are the same, under different water inlet and outlet areas, the flow rates of the fluid passages 201 of the cooling plate 200 that communicate with the water inlet cavity 102a and the water outlet cavity 102b are different, at this time, the flow rate of the water inlet cavity 102a is greater, and the pressure is greater, and the flow rate of the water outlet cavity 102b is smaller, and the pressure is smaller; in this way, the pressure generated by the flow rate difference and the pressure generated by the temperature difference reach a balance, and the water inlet and outlet ratio is fixed at, for example, 45%:55%.

[0058] When the water inlet and outlet ratios of the cooling plate 200 are 45%:55%, although the cooling liquid flow rate v1 corresponding to the first sub heat exchange region 202a is faster, the heat exchange area S1 is smaller; the cooling liquid flow rate v2 corresponding to the second sub heat exchange region 202b is slower, but the heat exchange area S2 is smaller. Since v1>v2, S1<S2, ΔT1>ΔT2, the heat exchange rates V1 of the first sub heat exchange region 202a and the heat exchange rates V2 of the second sub heat exchange region are more close.

[0059] When the heat exchange efficiency V1 of the first sub heat exchange region 202a is taken as a reference value, for the case where the water inlet and outlet ratio is 45%:55%, the heat exchange rate V2 of the second sub heat exchange region is higher than that when the water inlet and outlet ratio is 50%:50%, and finally reflected in the increase of the cooling liquid temperature of the water outlet cavity 102b, but the equivalent temperatures of each heat exchange region 202 are more close, and it can be seen that the temperature difference between the equivalent temperatures of the first heat exchange region 202 on the left and the first heat exchange region 202 on the right is 0.5°C.

[0060] In summary, the cooling assembly provided by the embodiment of the present application can provide more uniform heat exchange for multiple battery cells 500, and the temperature difference between the battery cells 500 is smaller.

[0061] The specific implementation modes of the various sub-components / structures of the cooling assembly 000 provided by the embodiment of the present application will be described below.

[0062] In some possible implementation modes, please refer to Figure 5 and Figure 6 The first end cover 100 can include an end cover body 101 connected to one end of the cooling plate 200, and a sliding rod 103 fixed in an inner cavity 102 of the end cover body 101; the partitioning slide 400 is in sliding connection with the sliding rod 103, and the length direction of the sliding rod 103 is parallel to the first direction X.

[0063] In the embodiment of the present application, the sliding connection between the split sliding plate 400 and the sliding rod 103 can be split to achieve the sliding of the split sliding plate 400 in the internal cavity 102 of the end cover body 101.

[0064] Please refer to Figure 12 , Figure 12 The structure diagram of the split sliding plate provided in the embodiment of the present application is shown. As shown in Figure 12 , the split sliding plate 400 can have a connecting through hole 401 matched with the shape of the sliding rod 103, and the split sliding plate 400 is sleeved on the sliding rod 103 through the connecting through hole 401.

[0065] For example, the sliding rod 103 can be a smooth cylindrical rod, and the connecting through hole 401 can be a smooth circular through hole, so as to ensure smooth sliding between the split sliding plate 400 and the sliding rod 103.

[0066] In some possible implementation manners, as shown in Figure 6 , the first end cover 100 can further include a first fixing member 104 and a second fixing member 105 arranged along the first direction X, and the first fixing member 104 and the second fixing member 105 are fixed in the internal cavity 102 of the end cover body 101; one end of the sliding rod 103 is connected with the first fixing member 104, and the other end of the sliding rod 103 away from the first fixing member 104 is connected with the second fixing member 105.

[0067] In the embodiment of the present application, the sliding rod 103 can be fixedly connected or detachably connected with the first fixing member 104 and / or the second fixing member 105 after being sleeved with the split sliding plate 400. In addition, the first fixing member 104 and the second fixing member 105 can also limit the sliding range of the split sliding plate 400 in the first direction X, so as to limit the range of the water inlet and outlet ratio of the cooling plate 200.

[0068] Please refer to Figure 13 , Figure 13 The structure diagram of the fixing member and the sliding rod provided in the embodiment of the present application is shown. As shown in Figure 13 , the first fixing member 104 has a first fixing groove 1041 on the side facing the second fixing member 105, and one end of the sliding rod 103 is connected with the first fixing member 104 in the first fixing groove 1041; the second fixing member 105 has a second fixing groove 1051 on the side facing the first fixing member 104, and the other end of the sliding rod 103 away from the first fixing member 104 is connected with the second fixing member 105 in the second fixing groove 1051.

[0069] In the embodiment of the present application, the sliding rod 103 can be fixed by slotting on the fixing member.

[0070] In some possible implementation manners, as shown in Figure 13As shown, the sliding rod 103 can include a sliding rod body 1031 and at least one telescopic part 1032 connected to at least one end of the sliding rod body 1031 in the first direction X, and the telescopic part 1032 can be telescoped in the first direction X. It should be noted that in the embodiments of the present application, the telescopic part has two telescopic parts 1032 as an example, and the implementation manner of having only one telescopic part 1032 is not excluded, and the sliding rod 103 can only include one telescopic part 1032 connected to one end of the sliding rod body 1031. Figure 13 As shown, the sliding rod 103 can include a sliding rod body 1031 and at least one telescopic part 1032 connected to at least one end of the sliding rod body 1031 in the first direction X, and the telescopic part 1032 can be telescoped in the first direction X. It should be noted that in the embodiments of the present application, the telescopic part has two telescopic parts 1032 as an example, and the implementation manner of having only one telescopic part 1032 is not excluded, and the sliding rod 103 can only include one telescopic part 1032 connected to one end of the sliding rod body 1031.

[0071] The telescopic part 1032 of the sliding rod 103 can be telescoped in the first direction X, so that the two ends of the sliding rod 103 can be embedded in the first fixed groove 1041 of the first fixed part 104 and the second fixed groove 1051 of the second fixed part 105, and the sliding rod 103 can be detachably connected in the end cover body 101. After the split sliding plate 400 is sleeved on the sliding rod 103, the sliding rod 103 can be installed on the first fixed part 104 and the second fixed part 105 through the telescopic part 1032, so as to realize the installation of the split sliding plate 400 on the first end cover 100.

[0072] Some possible implementation manners are as shown in Figure 13 As shown, the split sliding plate 400 has a sliding surface in contact with the inner wall of the internal cavity 102 of the first end cover 100. For example, the split sliding plate 400 is in contact with the side surface of the internal cavity 102 of the first end cover 100 and the surface away from the cooling plate 200, and the split sliding plate 400 correspondingly has a contact surface 402 and a contact surface 403, which can be smooth arc convex surfaces, so as to reduce the friction between the split sliding plate 400 and the internal cavity 102 of the first end cover 100, and make the split sliding plate 400 slide smoothly.

[0073] Some possible implementation manners are as shown in Figure 5 As shown in Figure 6 The first end cover 100 can also have a water inlet 106 and a water outlet 107, the water inlet 106 is in communication with the water inlet cavity 102a, and the water outlet 107 is in communication with the water outlet cavity 102b, and the water inlet 106 and the water outlet 107 are arranged in the first direction X.

[0074] In summary, the cooling assembly provided by the embodiment of the application comprises a cooling plate, a first end cover and a partitioning slide plate. The first end cover is divided into a water inlet cavity and a water outlet cavity by arranging the partitioning slide plate in sliding connection with the internal cavity of the first end cover. In the case that the liquid temperature in the water outlet cavity is higher than that in the water inlet cavity, the pressure generated by the thermal expansion of the liquid in the water outlet cavity due to the higher temperature will be greater than that of the liquid in the water inlet cavity, so that the partitioning slide plate slides to the side of the water inlet cavity. In this way, the water inlet cavity is reduced in size, and the number of fluid channels in communication with the water inlet cavity is reduced, so that the ratio of the water inlet area to the water outlet area in the cooling plate can be changed, the temperature difference of the cooling liquid along the way can be reduced, and the uniform heat exchange between the battery cells can be improved.

[0075] As Figure 3 With Figure 4 As shown in the drawings, the battery module provided by the embodiment of the application can comprise: a plurality of battery cells 500 and at least one cooling assembly 000; the side surface of the plurality of battery cells 500 is in contact with the side surface of the cooling plate 200. The cooling assembly 000 can be the cooling assembly 000 described in any of the above embodiments, and the battery module can correspond to the technical effects of the cooling assembly 000, which will not be described again here.

[0076] The embodiment of the application also provides a vehicle, which is internally installed with the above at least one battery module and a cooling system for providing cooling liquid to the cooling assembly 000. The vehicle can be a pure electric vehicle or a hybrid electric vehicle.

[0077] In the present application, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0078] The above description is only optional embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cooling assembly, characterized in that, The utility model relates to a cooling plate (200), a first end cover (100) and a split slide plate (400) are included. The cooling plate (200) has a plurality of fluid channels (201) arranged along a first direction. The first end cover (100) is connected with one end of the cooling plate (200), and an inner cavity (102) of the first end cover (100) is in communication with one end of the plurality of fluid channels (201). The split slide plate (400) is slidably connected with the inner cavity (102) of the first end cover (100), and the split slide plate (400) can divide the inner cavity (102) of the first end cover (100) into a water inlet cavity (102a) and a water outlet cavity (102b), the water inlet cavity (102a) is in communication with one end of a part of the plurality of fluid channels (201), and the water outlet cavity (102b) is in communication with one end of another part of the plurality of fluid channels (201). The split slide plate (400) can slide between the water inlet cavity (102a) and the water outlet cavity (102b). The first end cover (100) includes an end cover body (101) connected with one end of the cooling plate (200), and a sliding rod (103) fixed in the inner cavity of the end cover body (101).

2. The cooling assembly of claim 1, wherein, The split slide plate (400) is slidably connected with the sliding rod (103), and the length direction of the sliding rod (103) is parallel to the first direction. The split slide plate (400) has a connecting through hole (401) matched with the shape of the sliding rod (103), and the split slide plate (400) is sleeved on the sliding rod (103) through the connecting through hole (401).

3. Cooling assembly according to claim 2, characterized in that The first end cover (100) further includes a first fixing member (104) and a second fixing member (105) arranged along the first direction, and the first fixing member (104) and the second fixing member (105) are both fixed in the inner cavity (102) of the end cover body (101).

4. The cooling assembly of claim 2, wherein, One end of the sliding rod (103) is connected with the first fixing member (104), and the end of the sliding rod (103) away from the first fixing member (104) is connected with the second fixing member (105). The first fixing member (104) has a first fixing groove (1041) on the side facing the second fixing member (105), and one end of the sliding rod (103) is connected with the first fixing member (104) in the first fixing groove (1041).

5. Cooling assembly according to claim 4, characterized in that The second fixing member (105) has a second fixing groove (1051) on the side facing the first fixing member (104), and the end of the sliding rod (103) away from the first fixing member (104) is connected with the second fixing member (105) in the second fixing groove (1051). ​ 6. Cooling assembly according to claim 5, characterized in that The sliding rod (103) comprises a sliding rod body (1031) and at least one telescopic part (1032), the telescopic part (1032) is connected with at least one end of the sliding rod body (1031), and the telescopic part (1032) can be telescoped in the first direction.

7. Cooling assembly according to any of claims 1-6, characterized in that The split sliding plate (400) has a sliding surface in contact with the inner wall of the internal cavity (102) of the first end cover (100).

8. Cooling assembly according to claim 7, characterized in that The sliding surface is an arc convex surface.

9. Cooling assembly according to any of claims 1-6, characterized in that The first end cover (100) further has a water inlet (106) and a water outlet (107), the water inlet (106) communicates with the water inlet cavity (102a), the water outlet (107) communicates with the water outlet cavity (102b), and the water inlet (106) and the water outlet (107) are arranged in the first direction.

10. A battery module, characterized by Comprise: A plurality of battery cells (500), and at least one cooling assembly (000) according to any one of claims 1-9; The side surface of the plurality of battery cells (500) is in contact with the side surface of the cooling plate (200).

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