Liquid cooling device and battery system

Abstract

The utility model discloses a liquid cooling device and a battery system. The liquid cooling device is arranged in a box body of the battery system, the liquid cooling device is used for cooling a battery module in the battery system, the surface of the box body is provided with a concave structure, the liquid cooling device is characterized by comprising a plurality of liquid cooling plates and pipelines, cooling channels for a cooling medium to flow are formed in the liquid cooling plates, and the pipelines are communicated with the cooling channels in the plurality of liquid cooling plates. The plurality of liquid cooling plates comprise a first liquid cooling plate, the first liquid cooling plate comprises a first plate body and a second plate body which are arranged in the horizontal direction, a first interval space is arranged between the first plate body and the second plate body, and the first interval space is used for being matched with the concave structure of the box body, so that the liquid cooling device can make full use of the space of the box body; and installation of the liquid cooling device and the box body is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a liquid cooling device and battery system. BACKGROUND

[0002] To meet the demand of heavy truck long endurance, the battery system usually adopts the structure design of multilayer battery module stacking to increase the battery capacity as much as possible in the limited box space. The heat generated by the multilayer stacked battery module is large, and the battery system needs to be cooled.

[0003] In addition, the battery system can be fixed on the heavy truck through the hoisting structure. In order to facilitate hoisting, the box of the battery system is provided with a recess structure specially used for accommodating the hoisting structure. In the related art, a unified specification liquid cooling plate is usually used for simple assembly installation. This installation method cannot fully utilize the box space, and may also cause difficulty in installing the liquid cooling plate due to the mismatch with the recess structure, and even in the process of vehicle driving vibration, the liquid cooling plate is easy to collide and rub with the recess structure, damaging the liquid cooling device and the box structure, affecting the stability and reliability of the battery system. SUMMARY

[0004] The main purpose of the utility model is to provide a liquid cooling device and battery system, which aims to solve the technical problem of mismatch between the liquid cooling plate and the recess structure of the box in the related art, affecting the stability and reliability of the battery system.

[0005] In order to realize the above-mentioned utility model purpose, the utility model discloses a liquid cooling device in the first aspect.

[0006] A liquid cooling device is arranged in the box of the battery system, and the liquid cooling device is used for cooling the battery module in the battery system. The surface of the box has a recess structure. The liquid cooling device comprises a plurality of liquid cooling plates and a pipeline. The cooling channel for the flow of cooling medium is arranged in the liquid cooling plate. The pipeline is connected with the cooling channels in the plurality of liquid cooling plates.

[0007] The plurality of liquid cooling plates comprises a first liquid cooling plate. The first liquid cooling plate comprises a first plate body and a second plate body arranged in the horizontal direction. The first interval space is arranged between the first plate body and the second plate body, and is used for adapting the recess structure of the box.

[0008] In one embodiment, the first liquid cooling plate further comprises a third plate body, the third plate body is located on the same horizontal plane with the first plate body and the second plate body, and the second interval space is arranged between the third plate body and the second plate body, and is used for adapting the recess structure of the box.

[0009] In one of the embodiments, the plurality of liquid cooling plates further comprises a second liquid cooling plate, a third liquid cooling plate and a fourth liquid cooling plate, and the first liquid cooling plate, the second liquid cooling plate, the third liquid cooling plate and the fourth liquid cooling plate are arranged in a vertical direction.

[0010] In one of the embodiments, a projection of the second plate body in a vertical direction is located at the second liquid cooling plate; and / or

[0011] a projection of the second liquid cooling plate in a vertical direction is located at the third liquid cooling plate; and / or

[0012] a projection of the third liquid cooling plate in a vertical direction is located at the fourth liquid cooling plate.

[0013] In one of the embodiments, the first plate body is provided with a first mounting member, the first mounting member is used for connecting the battery module, and the first mounting member is arranged in a first direction.

[0014] The second plate body is provided with a second mounting member, the second mounting member is used for connecting the battery module, the second mounting member is arranged in a second direction, and the first direction intersects with the second direction.

[0015] In one of the embodiments, the first direction and the second direction are arranged perpendicularly.

[0016] In one of the embodiments, the third plate body is provided with a third mounting member, the third mounting member is used for connecting the battery module, and the third mounting member is arranged in the first direction.

[0017] In one of the embodiments, in the first direction, the length of the second plate body is smaller than the length of the first plate body and the length of the second plate body.

[0018] In one of the embodiments, one side of the liquid cooling plate is provided with a first extension plate and a second extension plate, the first extension plate is provided with a liquid inlet, the second extension plate is provided with a liquid outlet, the liquid inlet and the liquid outlet are connected with the cooling channel, and the liquid inlet and the liquid outlet are communicated with the pipeline.

[0019] The second aspect of the utility model provides a battery system comprising the liquid cooling device.

[0020] Beneficial effects:

[0021] This utility model discloses a liquid cooling device installed inside a battery system housing. The liquid cooling device is used to cool the battery modules within the battery system. The housing surface has a recessed structure. The device is characterized by comprising multiple liquid cooling plates and pipes. Cooling channels for the flow of cooling medium are formed within the liquid cooling plates, and these channels connect to the cooling channels within the multiple liquid cooling plates. The multiple liquid cooling plates include a first liquid cooling plate, which comprises a first plate body and a second plate body arranged horizontally. A first gap space is provided between the first plate body and the second plate body. This first gap space is used to accommodate the recessed structure of the housing, allowing the liquid cooling device to fully utilize the space within the housing and facilitating the installation of the liquid cooling device with the housing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a liquid cooling device according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of a liquid cooling device and a battery module according to an embodiment of the present invention.

[0024] in:

[0025] 10. Battery module;

[0026] 100. Liquid-cooled plate; 110. First liquid-cooled plate; 111. First plate body; 112. Second plate body; 113. Third plate body; 114. First mounting component; 115. Second mounting component; 116. Third mounting component; 120. Second liquid-cooled plate; 130. Third liquid-cooled plate; 140. Fourth liquid-cooled plate; 150. First partition space; 160. Second partition space; 170. First extension plate; 180. Second extension plate;

[0027] 200. Pipeline.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "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" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0031] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In some embodiments, a battery system including a liquid cooling device is provided. The battery system is applied to a heavy truck.

[0034] As Figure 1 and Figure 2As shown, in some embodiments, a liquid cooling device is applied to the battery system described above. The liquid cooling device is arranged in the box of the battery system, and is used to cool the battery module 10 in the battery system. The surface of the box has a recess structure, and the liquid cooling device comprises a plurality of liquid cooling plates 100 and a pipeline 200. The liquid cooling plates 100 are provided with cooling channels for the flow of cooling medium, and the pipeline 200 is connected to the cooling channels in the plurality of liquid cooling plates 100. The plurality of liquid cooling plates 100 comprises a first liquid cooling plate 110, which comprises a first plate body 111 and a second plate body 112 arranged in a horizontal direction. A first spacing space 150 is arranged between the first plate body 111 and the second plate body 112, and is used to adapt to the recess structure of the box, so that the liquid cooling device can make full use of the space of the box, and the installation of the liquid cooling device and the box is facilitated.

[0035] In operation, the cooling medium continuously flows into the cooling channels of each liquid cooling plate 100 under the transportation of the pipeline 200. The heat generated by the multi-layer stacked battery module 10 during operation is transferred to the plurality of liquid cooling plates 100. When the cooling medium flows in the channels, the liquid cooling medium absorbs the heat on the liquid cooling plate 100 through the principle of heat conduction, the temperature of the cooling medium rises, and then the cooling medium carrying the heat flows out of the liquid cooling plate 100, is cooled by an external condenser, and then is circulated into the liquid cooling plate 100 again, continuously carrying out the heat of the battery module 10, and achieving efficient heat dissipation.

[0036] In some embodiments, the first liquid cooling plate 110 further comprises a third plate body 113, which is located on the same horizontal plane as the first plate body 111 and the second plate body 112. A second spacing space 160 is arranged between the third plate body 113 and the second plate body 112, and is used to adapt to the recess structure of the box. In the application scenario of the multi-layer stacked battery module 10 of the heavy truck with large heat generation, the arrangement of the first plate body 111, the second plate body 112 and the third plate body 113 can maintain the normal working temperature of the battery module 10, reduce the performance degradation of the battery due to overheating, and prolong the service life of the battery system.

[0037] Specifically, the interval width of the first spacing space 150 and the second spacing space 160 is equal. In this way, the first spacing space 150 and the second spacing space 160 are consistent in size, forming a symmetrical and regular space layout.

[0038] In some embodiments, the plurality of liquid cooling plates 100 further comprises a second liquid cooling plate 120, a third liquid cooling plate 130 and a fourth liquid cooling plate 140. The first liquid cooling plate 110, the second liquid cooling plate 120, the third liquid cooling plate 130 and the fourth liquid cooling plate 140 are arranged in a vertical direction.

[0039] It should be noted that the first liquid cooling plate 110, the second liquid cooling plate 120, the third liquid cooling plate 130 and the fourth liquid cooling plate 140 are arranged in a vertical direction, forming a three-dimensional heat dissipation structure, and performing layered heat dissipation on the multi-layer stacked battery module 10. The first liquid cooling plate 110, the second liquid cooling plate 120, the third liquid cooling plate 130 and the fourth liquid cooling plate 140 are connected by the pipeline 200. The heat generated by the battery module 10 in different layers can be absorbed by the corresponding liquid cooling plate 100. For example, the first liquid cooling plate 110 closest to the top battery module 10 absorbs the heat of the upper layer module, and the fourth liquid cooling plate 140 closest to the bottom absorbs the heat of the lower layer module. Such arrangement can avoid the accumulation of heat between the battery modules 10 and improve the heat dissipation efficiency. This is particularly important for the application scenario of heavy truck battery system with high working strength and large heat generation, which can prevent the battery module 10 from performance degradation or damage due to overheating, and prolong the service life of the battery module 10. In addition, each liquid cooling plate 100 can reasonably adjust its position and the design of the cooling channel according to the spacing and heat generation of the adjacent two layers of battery modules 10, to ensure that it can effectively cover and cool the corresponding battery module 10, and fully utilize the vertical space of the box for heat dissipation.

[0040] Specifically, the projection of the second plate body 112 in the vertical direction is located in the second liquid cooling plate 120. The projection of the second liquid cooling plate 120 in the vertical direction is located in the third liquid cooling plate 130. The projection of the third liquid cooling plate 130 in the vertical direction is located in the fourth liquid cooling plate 140. That is, the second plate body 112 is staggered with the second liquid cooling plate 120 in the horizontal direction, and the length of the second plate body 112 is shorter than the length of the second liquid cooling plate 120. The second liquid cooling plate 120 is staggered with the third liquid cooling plate 130 in the horizontal direction, and the length of the second liquid cooling plate 120 is shorter than the length of the third liquid cooling plate 130. The third liquid cooling plate 130 is staggered with the fourth liquid cooling plate 140 in the horizontal direction, and the length of the third liquid cooling plate 130 is shorter than the length of the fourth liquid cooling plate 140.

[0041] In some embodiments, the first plate body 111 is provided with a first mounting piece 114 for connecting the battery module 10, and the first mounting piece 114 is arranged in a first direction. The second plate body 112 is provided with a second mounting piece 115 for connecting the battery module 10, and the second mounting piece 115 is arranged in a second direction, and the first direction intersects with the second direction. The first direction is the X-axis direction. The second direction is the Y-axis direction.

[0042] It should be noted that the first mounting member 114 and the second mounting member 115 connect and fix the battery module 10 from different directions, can form a more stable connection structure between the battery module 10 and the first liquid cooling plate 110, can effectively prevent the battery module 10 from loosening, shifting and other problems, reduce the electrical faults, heat dissipation faults and other faults caused by poor connection, and protect the normal operation of the battery system. Specifically, the battery module 10 is arranged above the first mounting member 114 and the second mounting member 115. Threaded holes are arranged on the first mounting member 114 and the second mounting member 115, and the battery module 10 is provided with threaded holes. The threaded fasteners are arranged in the threaded holes, the first mounting member 114 and the battery module 10 are installed, and the second mounting member 115 and the battery module 10 are installed.

[0043] In some embodiments, the third plate body 113 is provided with a third mounting member 116 for connecting the battery module 10, and the third mounting member 116 is arranged along the first direction. The third mounting member 116 is arranged in the same direction as the first mounting member 114, and has a parallel or same direction relationship in spatial layout. Specifically, the battery module 10 is arranged above the third mounting member 116. Specifically, threaded holes are arranged on the third mounting member 116, and the battery module 10 is provided with threaded holes. The threaded fasteners are arranged in the threaded holes, the third mounting member 116 and the battery module 10 are installed.

[0044] In some embodiments, along the first direction, the length of the second plate body 112 is less than the length of the first plate body 111 and the length of the second plate body 112.

[0045] It should be noted that this arrangement can better adapt to the gap between the battery modules 10 or specific layout requirements. For example, in some areas where the battery modules 10 are arranged closely, the shorter second plate body 112 can avoid interference with the connection lines of the battery modules 10, other liquid cooling plates 100 or sensors, etc., so as to be more flexibly embedded in the limited space between the battery modules 10, and optimize the layout of the liquid cooling plate 100 in the battery system.

[0046] The first plate body 111 and the third plate body 113 are longer in the first direction, and the first plate body 111 and the third plate body 113 can form a complementary spatial layout with the second plate body 112. This arrangement enables the first liquid cooling plate 110 to be reasonably shaped according to the actual space inside the battery system without affecting the overall heat dissipation function. For example, the longer first plate body 111 and the third plate body 113 can cover a larger area of the battery module 10 for main heat absorption and conduction, while the shorter second plate body 112 can play a role in places where other components need to be avoided or special space shapes are required, to form a high-efficiency and compact liquid cooling plate 100 structure.

[0047] In some embodiments, one side of the liquid cooling plate 100 is provided with a first extension plate 170 and a second extension plate 180, the first extension plate 170 is provided with an inlet, and the second extension plate 180 is provided with an outlet, the inlet and the outlet are connected with the cooling channel, and the inlet and the outlet are communicated with the pipeline 200. That is, the first liquid cooling plate 110, the second liquid cooling plate 120, the third liquid cooling plate 130 and the fourth liquid cooling plate 140 are all provided with the first extension plate 170 and the second extension plate 180.

[0048] It should be noted that the first extension plate 170 and the second extension plate 180 protrude outward from the main body of the liquid cooling plate 100, and the first extension plate 170 and the second extension plate 180 provide interface positions for the inlet and outlet of the cooling medium. The first extension plate 170 is provided with an inlet, and the cooling medium enters the cooling channel inside the liquid cooling plate 100 through the inlet. The second extension plate 180 is provided with an outlet, and the cooling medium after absorbing heat in the cooling channel flows out from the outlet. The inlet and the outlet are connected with the cooling channel in the liquid cooling plate 100, and they are also communicated with the pipeline 200, thereby forming a complete cooling medium circulation system.

[0049] The communication mode of the inlet and the outlet with the pipeline 200 enables the liquid cooling device to be easily integrated with the external cooling system. Whether during installation or maintenance, it is convenient to connect the liquid cooling device with other cooling equipment.

[0050] The liquid cooling device can adapt to different cooling system configurations through good connection of the inlet and the outlet with the pipeline 200. For example, according to the actual needs of the battery system, the length and diameter of the pipeline 200 can be adjusted, or different performance radiators and other external equipment can be replaced, while the structure of the inlet and the outlet of the liquid cooling device can remain unchanged, which enhances the compatibility of the liquid cooling device with various external cooling systems.

[0051] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are included in the patent protection range of the present application.

Claims

1. A liquid cooling device, wherein the liquid cooling device is disposed within a battery system housing, the liquid cooling device being used to cool battery modules within the battery system, the surface of the housing having a recessed structure, characterized in that, The liquid cooling device includes multiple liquid cooling plates and pipes. Cooling channels for the flow of cooling medium are opened in the liquid cooling plates, and the pipes connect the multiple cooling channels in the liquid cooling plates. The plurality of liquid cooling plates include a first liquid cooling plate, the first liquid cooling plate including a first plate body and a second plate body arranged in a horizontal direction, a first gap space is provided between the first plate body and the second plate body, the first gap space is used to adapt to the recessed structure of the housing.

2. The liquid cooling device according to claim 1, characterized in that, The first liquid cooling plate also includes a third plate, which is located on the same horizontal plane as the first plate and the second plate, and a second gap space is provided between the third plate and the second plate. The second gap space is used to accommodate the recessed structure of the housing.

3. The liquid cooling device according to claim 1, characterized in that, The plurality of liquid cooling plates also include a second liquid cooling plate, a third liquid cooling plate, and a fourth liquid cooling plate, wherein the first liquid cooling plate, the second liquid cooling plate, the third liquid cooling plate, and the fourth liquid cooling plate are arranged at intervals in the vertical direction.

4. The liquid cooling device according to claim 3, characterized in that, The projection of the second plate in the vertical direction is located on the second liquid cooling plate; and / or The projection of the second liquid cooling plate in the vertical direction is located on the third liquid cooling plate; and / or The projection of the third liquid cooling plate along the vertical direction is located on the fourth liquid cooling plate.

5. The liquid cooling device according to claim 2, characterized in that, The first plate body has a protruding first mounting member, which is used to connect the battery module, and the first mounting member is arranged along a first direction; The second plate has a protruding second mounting member for connecting the battery module. The second mounting member is arranged along a second direction, and the first direction intersects with the second direction.

6. The liquid cooling device according to claim 5, characterized in that, The first direction and the second direction are set perpendicularly.

7. The liquid cooling device according to claim 5, characterized in that, The third plate has a protruding third mounting member, which is used to connect the battery module and is arranged along the first direction.

8. The liquid cooling device according to claim 6, characterized in that, Along the first direction, the length of the second plate is less than the length of the first plate and the length of the second plate.

9. The liquid cooling device according to claim 1, characterized in that, The liquid cooling plate has a first extension plate and a second extension plate on one side. The first extension plate has a liquid inlet and the second extension plate has a liquid outlet. Both the liquid inlet and the liquid outlet are connected to the cooling channel and are connected to the pipeline.

10. A battery system, characterized in that, Includes the liquid cooling device according to any one of claims 1 to 9.

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