Battery cluster

Abstract

The utility model discloses a battery cluster, which comprises a plurality of battery modules and a liquid cooling system, and the plurality of battery modules are superposed along a first direction; the liquid cooling system comprises first liquid cooling plates, and the first liquid cooling plates are arranged on the same side of each battery module in the first direction. According to the battery cluster disclosed by the utility model, the first liquid cooling plates are arranged on the same side of each battery module along the first direction, and the first liquid cooling plates can be used for cooling two adjacent battery modules at the same time, so that the temperature difference between the two adjacent battery modules can be reduced, and the service life of the battery cluster can be further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery cluster. BACKGROUND

[0002] A large amount of heat is generated in the charging and discharging process of the battery cluster, and if the heat cannot be timely expanded and accumulated in the battery, on the one hand, it will increase the speed of the battery cluster interface side reaction, and on the other hand, excessive accumulation of heat may cause battery thermal runaway. Therefore, in order to ensure the normal use of the battery cluster, it needs to be cooled. At present, the battery cluster uses single-sided liquid cooling plate for heat exchange, which leads to a large temperature difference between the upper and lower battery modules, affecting the life cycle of the battery module. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery cluster, a first liquid cooling plate is arranged on the same side of each battery module along a first direction, the first liquid cooling plate can simultaneously cool two adjacent battery modules, the temperature difference between the two adjacent battery modules can be reduced, and the service life of the battery cluster can be improved.

[0004] According to the battery cluster of the utility model embodiment, a plurality of battery modules are stacked along a first direction, and a liquid cooling system includes a first liquid cooling plate, and each battery module is provided with the first liquid cooling plate on the same side along the first direction.

[0005] According to the battery cluster of the utility model embodiment, a first liquid cooling plate is arranged on the same side of each battery module along a first direction, the first liquid cooling plate can simultaneously cool two adjacent battery modules, the temperature difference between the two adjacent battery modules can be reduced, and the service life of the battery cluster can be improved.

[0006] According to some embodiments of the utility model, the liquid cooling system further includes a second liquid cooling plate, each of the plurality of battery modules includes a first battery group and a second battery group arranged side by side along a second direction, the first battery group and the second battery group extend along a third direction, and the second liquid cooling plate is arranged between the first battery group and the second battery group, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0007] According to some embodiments of the utility model, the liquid cooling system further includes a third liquid cooling plate, and the third liquid cooling plate is located on the side of the plurality of battery modules away from the first liquid cooling plate.

[0008] According to some embodiments of the utility model, the liquid cooling system further comprises: a liquid inlet cooling pipe and a liquid outlet cooling pipe, the liquid inlet cooling pipe is communicated with the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate, and the liquid outlet cooling pipe is communicated with the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate.

[0009] According to some embodiments of the utility model, the liquid inlet cooling pipe comprises a main liquid inlet pipe and a first branch pipe, a second branch pipe and a third branch pipe communicated with the main liquid inlet pipe, the first branch pipe is communicated with the first liquid cooling plate, the second branch pipe is communicated with the second liquid cooling plate, and the third branch pipe is communicated with the third liquid cooling plate, and / or the liquid outlet cooling pipe comprises a main liquid outlet pipe and a fourth branch pipe, a fifth branch pipe and a sixth branch pipe communicated with the main liquid outlet pipe, the fourth branch pipe is communicated with the first liquid cooling plate, the fifth branch pipe is communicated with the second liquid cooling plate, and the sixth branch pipe is communicated with the third liquid cooling plate.

[0010] According to some embodiments of the utility model, the battery cluster further comprises: a first end plate and a second end plate, the first end plate and the second end plate are respectively located on the two sides of the battery module along the third direction, and the liquid inlet cooling pipe and the liquid outlet cooling pipe are located on the outer side of the first end plate or the second end plate.

[0011] According to some embodiments of the utility model, the battery cluster further comprises: a fixed frame, the fixed frame comprises a base, a top frame and a plurality of vertical beams, the base and the top frame are respectively located on the opposite sides of a plurality of battery modules along the first direction, a plurality of vertical beams are located on the two sides of the battery module along the second direction, and the two ends of the vertical beam along the first direction are respectively fixedly connected with the base and the top frame.

[0012] According to some embodiments of the utility model, the fixed frame further comprises: a first connecting plate, the first connecting plate is located on at least one side of the vertical beam along the third direction, the base has a supporting plate matched with the vertical beam on both sides along the second direction, the first connecting plate comprises a first fixed plate, a second fixed plate and a first inclined plate connected between the first fixed plate and the second fixed plate, the first fixed plate is fixedly connected with the vertical beam, and the second fixed plate is fixedly connected with the supporting plate.

[0013] According to some embodiments of the utility model, the fixed frame further comprises: a second connecting plate, the second connecting plate is located on one side of the vertical beam along the third direction, the top frame comprises a first top rod extending along the third direction, the second connecting plate comprises a third fixed plate, a fourth fixed plate and a second inclined plate connected between the third fixed plate and the fourth fixed plate, the third fixed plate is fixedly connected with the first top rod, and the fourth fixed plate is fixedly connected with the vertical beam.

[0014] According to some embodiments of the present application, the fixed frame further comprises a third connecting plate located on the other side of the third direction of the vertical beam, the top frame further comprises a second top rod extending along the second direction, and the two ends of the second top rod along the second direction are connected with the first top rod respectively, and the third connecting plate is connected between the second top rod and the vertical beam.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

[0017] Figure 1 is a schematic diagram of a battery cluster according to some embodiments of the present application;

[0018] Figure 2 is Figure 1 a partial schematic diagram of a battery cluster;

[0019] Figure 3 is Figure 2 a schematic diagram of a battery cluster, wherein the top frame is in a separated state;

[0020] Figure 4 is Figure 2 a schematic diagram of a battery cluster, wherein the battery cluster is not provided with a top frame;

[0021] Figure 5 is Figure 4 an enlarged view of A in FIG. 4;

[0022] Figure 6 is Figure 2 a schematic diagram of a battery cluster, wherein the battery cluster is not provided with a top frame and a vertical beam;

[0023] Figure 7 is Figure 1 a side view of a battery cluster;

[0024] Figure 8 is a schematic diagram of a battery module according to some embodiments of the present application.

[0025] LIST OF REFERENCE NUMERALS:

[0026] 100, battery cluster;

[0027] 10, battery module; 11, first battery pack; 12, second battery pack;

[0028] 20, liquid cooling system; 21, first liquid cooling plate; 22, second liquid cooling plate; 23, third liquid cooling plate; 24, liquid inlet pipe; 241, main liquid inlet pipe; 242, first branch pipe; 243, second branch pipe; 244, third branch pipe; 25, liquid outlet pipe; 251, main liquid outlet pipe; 252, fourth branch pipe; 253, fifth branch pipe; 254, sixth branch pipe;

[0029] 31, first end plate; 32, second end plate; 33, side plate; 34, bolt;

[0030] 40, fixed frame; 41, base; 411, support plate; 42, top frame; 421, first top rod; 422, second top rod; 43, vertical beam; 44, first connecting plate; 441, first fixed plate; 442, second fixed plate; 443, first inclined plate; 45, second connecting plate; 451, third fixed plate; 452, fourth fixed plate; 453, second inclined plate; 46, third connecting plate. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it is understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0034] Reference is made below Figures 1-8 The battery cluster 100 according to the embodiments of the utility model is described.

[0035] The battery cluster 100 according to the embodiments of the utility model, the battery cluster 100 includes a plurality of battery modules 10 and a liquid cooling system 20, the liquid cooling system 20 includes a first liquid cooling plate 21, a plurality of battery modules 10 are stacked along a first direction (for example, refer to the e1 direction of the accompanying drawings) Figure 1 Each battery module 10 is provided with a first liquid cooling plate 21 on the same side along the first direction. For example, each battery module 10 is provided with a first liquid cooling plate 21 on one side along the first direction, or each battery module 10 is provided with a first liquid cooling plate 21 on the other side along the first direction.

[0036] In the first direction, the first liquid cooling plate 21 is provided on one side of the battery module 10, and the first liquid cooling plate 21 can not only heat exchange for the corresponding battery module 10, but also heat exchange for the adjacent another battery module 10;At the same time, the first liquid cooling plate 21 is also provided on one side of the adjacent another battery module 10, and the other side of the battery module 10 is heat exchanged, that is, the heat dissipation of the battery module 10 along the first direction can be carried out simultaneously, which not only can reduce the temperature difference between the adjacent two battery modules 10, improve the service life of the battery cluster 100, but also can save the number of first liquid cooling plates 21, thereby reducing the cost of the battery cluster 100.

[0037] Among them, the first direction can be the up-down direction, a plurality of battery modules 10 are stacked along the up-down direction, a first liquid cooling plate 21 is provided above each battery module 10, or a first liquid cooling plate 21 is provided below each battery module 10.

[0038] According to the embodiments of the utility model, the first liquid cooling plate 21 is provided on the same side along the first direction of each battery module 10, and the first liquid cooling plate 21 can simultaneously heat dissipation for the adjacent two battery modules 10, which can reduce the temperature difference between the adjacent two battery modules 10, improve the service life of the battery cluster 100.

[0039] According to some embodiments of the utility model, refer toFigures 1-8 The liquid cooling system 20 further comprises a second liquid cooling plate 22, each of the plurality of battery modules 10 comprises a first battery group 11 and a second battery group 12 arranged side by side along a second direction (for example, an e2 direction with reference to the accompanying drawings), the first battery group 11 and the second battery group 12 both extend along a third direction (for example, an e3 direction with reference to the accompanying drawings), and the second liquid cooling plate 22 is arranged between the first battery group 11 and the second battery group 12, wherein the first direction, the second direction and the third direction are perpendicular to each other. Figure 1 Figure 1 The second liquid cooling plate 22 not only can support the first battery group 11 and the second battery group 12, but also can simultaneously dissipate heat for the first battery group 11 and the second battery group 12, thereby reducing the temperature difference between the first battery group 11 and the second battery group 12 and improving the heat exchange efficiency of the plurality of battery modules 10.

[0040] The second liquid cooling plate 22 not only can support the first battery group 11 and the second battery group 12, but also can simultaneously dissipate heat for the first battery group 11 and the second battery group 12, thereby reducing the temperature difference between the first battery group 11 and the second battery group 12 and improving the heat exchange efficiency of the plurality of battery modules 10.

[0041] According to some embodiments of the present application, with reference to Figures 1-6 The liquid cooling system 20 further comprises a third liquid cooling plate 23, the third liquid cooling plate 23 is located on a side of the plurality of battery modules 10 away from the first liquid cooling plate 21, the third liquid cooling plate 23 is arranged at the outermost side or the innermost side of the battery modules 10, and the third liquid cooling plate 23 can cooperate with the second liquid cooling plate 22 to jointly dissipate heat for the battery modules 10 at the outermost side or the innermost side, thereby improving the heat exchange efficiency of the battery modules 10 at the outermost side or the innermost side.

[0042] According to some embodiments of the present application, with reference to Figure 1 and Figure 7 The liquid cooling system 20 further comprises an inlet liquid cooling pipe 24 and an outlet liquid cooling pipe 25, the inlet liquid cooling pipe 24 is in communication with the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23, and the outlet liquid cooling pipe 25 is in communication with the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23. By using one inlet liquid cooling pipe 24 and one outlet liquid cooling pipe 25 to realize communication with the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23, the number of pipelines can be reduced, the arrangement of the inlet liquid cooling pipe 24 and the outlet liquid cooling pipe 25 is facilitated, and the cost of the liquid cooling system 20 can be reduced.

[0043] According to some embodiments of the present application, with reference to Figure 1 and Figure 7 ​The inlet liquid cooling pipe 24 includes a main inlet pipe 241 and a first branch pipe 242, a second branch pipe 243 and a third branch pipe 244, the first branch pipe 242, the second branch pipe 243 and the third branch pipe 244 are communicated with the main inlet pipe 241, the first branch pipe 242 is communicated with the first liquid cooling plate 21, the second branch pipe 243 is communicated with the second liquid cooling plate 22, and the third branch pipe 244 is communicated with the third liquid cooling plate 23, and the inlet liquid of the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23 can be realized through the first branch pipe 242, the second branch pipe 243 and the third branch pipe 244, and one main inlet pipe 241 can be used to simultaneously provide the cooling liquid for the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23.

[0044] The first branch pipe 242, the second branch pipe 243 and the third branch pipe 244 are provided in plurality, the number of the first branch pipe 242 is equal to the number of the first liquid cooling plate 21, the number of the second branch pipe 243 is equal to the number of the second liquid cooling plate 22, and the number of the third branch pipe 244 is equal to the number of the third liquid cooling plate 23, and the communication of the first branch pipe 242, the second branch pipe 243 and the third branch pipe 244 with the corresponding first liquid cooling plate 21, second liquid cooling plate 22 and third liquid cooling plate 23 can be realized.

[0045] The outlet liquid cooling pipe 25 includes a main outlet pipe 251 and a fourth branch pipe 252, a fifth branch pipe 253 and a sixth branch pipe 254 communicated with the main outlet pipe 251, the fourth branch pipe 252 is communicated with the first liquid cooling plate 21, the fifth branch pipe 253 is communicated with the second liquid cooling plate 22, and the sixth branch pipe 254 is communicated with the third liquid cooling plate 23, and the cooling liquid flowing out of the first liquid cooling plate 21, the second liquid cooling plate 22 and the third liquid cooling plate 23 can be collected into the main outlet pipe 251 to realize the circulating flow of the cooling liquid.

[0046] The fourth branch pipe 252, the fifth branch pipe 253 and the sixth branch pipe 254 are provided in plurality, the number of the fourth branch pipe 252 is equal to the number of the first liquid cooling plate 21, the number of the fifth branch pipe 253 is equal to the number of the second liquid cooling plate 22, and the number of the sixth branch pipe 254 is equal to the number of the third liquid cooling plate 23, and the communication of the fourth branch pipe 252, the fifth branch pipe 253 and the sixth branch pipe 254 with the corresponding first liquid cooling plate 21, second liquid cooling plate 22 and third liquid cooling plate 23 can be realized.

[0047] According to some embodiments of the present application, referring to Figures 1-8 The battery cluster 100 further includes a first end plate 31 and a second end plate 32, and the first end plate 31 and the second end plate 32 are respectively located along the third direction (for example, referring to the attached drawings) of the battery module 10 Figure 1The first end plate 31 and the second end plate 32 can be used to fix the two sides of the battery module 10 along the third direction. The liquid inlet cooling pipe 24 and the liquid outlet cooling pipe 25 are located outside the first end plate 31 or the second end plate 32, and the liquid inlet cooling pipe 24 and the liquid outlet cooling pipe 25 do not occupy the internal space of the first end plate 31 and the second end plate 32 for fixing the battery module 10, and can also facilitate the arrangement of the liquid inlet cooling pipe 24 and the liquid outlet cooling pipe 25.

[0048] According to some embodiments of the present application, referring to Figures 1-6 The battery cluster 100 further comprises a fixing frame 40, the fixing frame 40 comprises a base 41, a top frame 42 and a plurality of vertical beams 43, the base 41 and the top frame 42 are respectively located on the opposite sides of the plurality of battery modules 10 along the first direction, the plurality of vertical beams 43 are located on the two sides of the battery module 10 along the second direction, and the two ends of the vertical beam 43 along the first direction are respectively fixedly connected with the base 41 and the top frame 42. The base 41, the top frame 42 and the plurality of vertical beams 43 are used to fix the bottom and the top of the plurality of battery modules 10 and the periphery, which can increase the fixing strength of the battery module 10.

[0049] For example, two, three or four vertical beams 43 can be arranged on the two sides of the battery module 10 along the second direction.

[0050] In one specific example, the battery cluster 100 further comprises a side plate 33, two side plates 33 are respectively located on the two sides of the battery module 10 along the second direction, and are used to protect the battery module 10. The vertical beam 43 is located outside the side plate 33, and the vertical beam 43 and the side plate 33 are fixedly connected by a bolt 34.

[0051] According to some embodiments of the present application, referring to Figures 1-3 The fixing frame 40 further comprises a first connecting plate 44, the first connecting plate 44 is located on at least one side of the vertical beam 43 along the third direction, the first connecting plate 44 can be located on one side of the vertical beam 43 along the third direction, and the first connecting plate 44 can also be located on the opposite sides of the vertical beam 43 along the third direction. The base 41 has a support plate 411 matched with the vertical beam 43 on the two sides along the second direction, the first connecting plate 44 comprises a first fixed plate 441, a second fixed plate 442 and a first inclined plate 443, the first inclined plate 443 is connected between the first fixed plate 441 and the second fixed plate 442, the first fixed plate 441 is fixedly connected with the vertical beam 43, the second fixed plate 442 is fixedly connected with the support plate 411, and the first fixed plate 441 and the first inclined plate 443 are arranged at an acute angle, and the second fixed plate 442 and the first inclined plate 443 are also arranged at an acute angle. The vertical beam 43 and the base 41 are fixedly connected by the first connecting plate 44, which can increase the connection strength of the vertical beam 43 and the base 41.

[0052] For example, the first fixed plate 441 is provided with a first mounting hole, the vertical beam 43 is provided with a second mounting hole opposite to the first mounting hole, a bolt 34 is arranged in the first mounting hole and the second mounting hole, and the bolt 34 is used for fixedly connecting the first connecting plate 44 and the vertical beam 43.

[0053] According to some embodiments of the present application, referring to Figures 1-3 The fixed frame 40 further comprises a second connecting plate 45, the second connecting plate 45 is located on one side of the vertical beam 43 in the third direction, the top frame 42 comprises a first top rod 421 extending in the third direction, the second connecting plate 45 comprises a third fixed plate 451, a fourth fixed plate 452 and a second inclined plate 453, the second inclined plate 453 is connected between the third fixed plate 451 and the fourth fixed plate 452, the third fixed plate 451 is fixedly connected with the first top rod 421, the fourth fixed plate 452 is fixedly connected with the vertical beam 43, and the vertical beam 43 and the top frame 42 are fixedly connected through the second connecting plate 45, so that the connection strength of the vertical beam 43 and the top frame 42 can be increased.

[0054] For example, the third fixed plate 451 is provided with a first connecting hole, the first top rod 421 is provided with a second connecting hole opposite to the first connecting hole, a bolt 34 is arranged in the first connecting hole and the second connecting hole, and the bolt 34 is used for fixedly connecting the second connecting plate 45 and the first top rod 421; the fourth fixed plate 452 is provided with a third connecting hole, the vertical beam 43 is provided with a fourth connecting hole opposite to the third connecting hole, a bolt 34 is arranged in the third connecting hole and the fourth connecting hole, and the bolt 34 is used for fixedly connecting the second connecting plate 45 and the vertical beam 43, so that the vertical beam 43 and the top frame 42 can be fixedly connected.

[0055] According to some embodiments of the present application, referring to Figures 1-3 The fixed frame 40 further comprises a third connecting plate 46, the third connecting plate 46 is located on the other side of the vertical beam 43 in the third direction, and the top frame 42 further comprises a second top rod 422 extending in the second direction, two ends of the second top rod 422 in the second direction are connected with the first top rod 421 respectively, the third connecting plate 46 is connected between the second top rod 422 and the vertical beam 43, and the vertical beam 43 and the top frame 42 are fixedly connected through the third connecting plate 46, so that the connection strength of the vertical beam 43 and the top frame 42 can be further increased.

[0056] For example, the third connecting plate 46 is provided with a first fixing hole, the second top rod 422 is provided with a second fixing hole opposite to the first fixing hole, and the bolt 34 is arranged in the first fixing hole and the second fixing hole to fix the third connecting plate 46 and the second top rod 422; the third connecting plate 46 is provided with a third fixing hole, the vertical beam 43 is provided with a fourth fixing hole opposite to the third fixing hole, and the bolt 34 is arranged in the third fixing hole and the fourth fixing hole to fix the third connecting plate 46 and the vertical beam 43, thereby fixing the vertical beam 43 and the second top rod 422.

[0057] In the description of the present specification, the description referring to the terms "some embodiments", "optionally", "further", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery cluster, characterized in that, include: Multiple battery modules, wherein the multiple battery modules are stacked along a first direction; A liquid cooling system, the liquid cooling system including a first liquid cooling plate, wherein each battery module is provided with the first liquid cooling plate on the same side along the first direction; A fixed frame includes a base, a top frame, and multiple vertical beams. The base and the top frame are located on opposite sides of the multiple battery modules in a first direction, and the multiple vertical beams are located on both sides of the battery modules along a second direction. The two ends of the vertical beams along the first direction are fixedly connected to the base and the top frame, respectively.

2. The battery cluster according to claim 1, characterized in that, The liquid cooling system further includes a second liquid cooling plate. Each of the multiple battery modules includes a first battery pack and a second battery pack arranged side by side along a second direction. The first battery pack and the second battery pack both extend along a third direction. The second liquid cooling plate is provided between the first battery pack and the second battery pack. The first direction, the second direction, and the third direction are perpendicular to each other.

3. The battery cluster according to claim 2, characterized in that, The liquid cooling system further includes a third liquid cooling plate, which is located on the side of the plurality of battery modules opposite to the first liquid cooling plate.

4. The battery cluster according to claim 3, characterized in that, The liquid cooling system further includes an inlet liquid cooling pipe and an outlet liquid cooling pipe, wherein the inlet liquid cooling pipe is connected to the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate, and the outlet liquid cooling pipe is connected to the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate.

5. The battery cluster according to claim 4, characterized in that, The liquid inlet cooling pipe includes a main liquid inlet pipe and a first branch pipe, a second branch pipe, and a third branch pipe all connected to the main liquid inlet pipe. The first branch pipe is connected to the first liquid cooling plate, the second branch pipe is connected to the second liquid cooling plate, and the third branch pipe is connected to the third liquid cooling plate. And / or, the liquid outlet cooling pipe includes a main liquid outlet pipe and a fourth branch pipe, a fifth branch pipe, and a sixth branch pipe all connected to the main liquid outlet pipe. The fourth branch pipe is connected to the first liquid cooling plate, the fifth branch pipe is connected to the second liquid cooling plate, and the sixth branch pipe is connected to the third liquid cooling plate.

6. The battery cluster according to any one of claims 4-5, characterized in that, Also includes: The first end plate and the second end plate are respectively located on both sides of the battery module along a third direction, and the liquid cooling pipe inlet and the liquid cooling pipe outlet are both located outside the first end plate or the second end plate.

7. The battery cluster according to claim 1, characterized in that, The fixed frame further includes: a first connecting plate, the first connecting plate being located on at least one side of the third direction of the vertical beam, the base having support plates cooperating with the vertical beam on both sides along the second direction, the first connecting plate including a first fixing plate, a second fixing plate and a first inclined plate connected between the first fixing plate and the second fixing plate, the first fixing plate being fixedly connected to the vertical beam, and the second fixing plate being fixedly connected to the support plate.

8. The battery cluster according to claim 1, characterized in that, The fixed frame further includes: a second connecting plate located on one side of the vertical beam in a third direction; the top frame includes a first top rod extending along the third direction; the second connecting plate includes a third fixing plate, a fourth fixing plate, and a second inclined plate connected between the third fixing plate and the fourth fixing plate; the third fixing plate is fixedly connected to the first top rod; and the fourth fixing plate is fixedly connected to the vertical beam.

9. The battery cluster according to claim 8, characterized in that, The fixed frame further includes a third connecting plate located on the other side of the third direction of the vertical beam. The top frame also includes a second top rod extending along the second direction. The two ends of the second top rod along the second direction are respectively connected to the first top rod. The third connecting plate is connected between the second top rod and the vertical beam.

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