Cubic cell net plate type circulation liquid cooling device

Abstract

The utility model discloses a cube battery cell net plate type circulation liquid cooling device which is used for cooling a battery cell group, and the battery cell group is formed by arraying a plurality of battery cell units; the cubic battery cell screen plate type circulation liquid cooling device comprises a base, each liquid cooling plate is vertically attached to the side wall of at least one battery cell unit; the water return mechanism is arranged on one side of the bottom of the battery cell group, the water return mechanism is fixed on the base, and the water return mechanism comprises a water return port, a main water return pipe groove and a plurality of branch water return pipe grooves; the water inlet mechanism is arranged on one side of the top of the battery cell group, the water inlet mechanism is fixed on the water return mechanism through a water inlet support frame, and the water inlet mechanism comprises a water inlet, a main water inlet pipe groove and a plurality of branch water inlet pipe grooves; according to the structure, the liquid cooling plates matched with the battery cell units in number can be vertically attached to the side walls of the battery cell units, so that a more uniform liquid cooling effect is achieved.

Description

Technical Field

[0001] The utility model relates to a liquid-cooled energy storage system, in particular to a square cell mesh plate type circulating liquid cooling device. Background Art

[0002] The description of this part only provides background information related to the disclosure of the utility model, and does not constitute prior art.

[0003] Due to its good specific heat capacity, heat conductivity and high heat dissipation efficiency, the liquid cooling system is more suitable for use as a heat dissipation medium in scenarios such as cells, electronics, and mechanical equipment in high-temperature environments. Since the arrangement and heat dissipation methods of the cell groups of each enterprise are different, manufacturers on the market use liquid cooling, air cooling or air-liquid integrated cooling. However, for the liquid-cooled cell groups currently used by enterprises, most of them adopt an integrated liquid cooling plate formed by integral stamping and brazing, and mostly adopt a structural form arranged at the bottom of the cell group.

[0004] The liquid cooling device arranged at the bottom of the cell group has the advantages of simple processing and concentrated structure, but also has some problems. For example, most of the existing cells are heavy, and the liquid cooling plate not only has to bear the heat dissipation function, but also has to bear the weight of the entire cell group, resulting in a generally thick thickness of the liquid cooling plate, increasing the weight of the overall cell group. During the natural settlement process after the module is installed, the water passage cavity of the liquid cooling plate will be naturally bent, affecting the flow-through, and seriously may cause the water cooling plate to break. At the same time, due to the physical characteristics and heat generation characteristics of the cells, and the "positive and negative electrode posts" of the cells are usually set at the top of the cells, that is, the external output end and the connection end are both at the top, resulting in the heat generation of the entire cell being actually "higher at the top and lower at the bottom". That is to say, through the existing liquid cooling system, it is very likely that the temperature distribution between the upper and lower ends of a single cell is uneven during operation, thereby affecting the service life of the cell.

[0005] At present, there is no square cell mesh plate type circulating liquid cooling device that can solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a square cell mesh plate type circulating liquid cooling device, which can achieve a more uniform liquid cooling and temperature reduction effect by vertically attaching a liquid cooling plate matching the number of cell units to the side walls of the cell units.

[0007] In order to achieve the above purpose, the utility model discloses the following square cell mesh plate type circulating liquid cooling device, wherein, the cell group is formed by arranging a plurality of cell units in an array; wherein, the square cell mesh plate type circulating liquid cooling device includes:

[0008] Base;

[0009] A plurality of liquid cooling plates, each of the liquid cooling plates is vertically attached to the side wall of at least one of the battery cell units;

[0010] A return water mechanism, the return water mechanism is arranged on one side of the bottom of the battery cell group, the return water mechanism is fixed on the base, the return water mechanism includes a return water port, a main return water pipe groove and a plurality of shunt return water pipe grooves, the return water port is communicated with the main return water pipe groove, the main return water pipe groove is communicated with the plurality of shunt return water pipe grooves, and each of the shunt return water pipe grooves is communicated with a plurality of the liquid cooling plates corresponding to the shunt return water pipe groove;

[0011] An inlet water mechanism, the inlet water mechanism is arranged on one side of the top of the battery cell group, the inlet water mechanism is fixed on the return water mechanism through an inlet water support frame, the inlet water mechanism includes an inlet water port, a main inlet water pipe groove and a plurality of shunt inlet water pipe grooves, the inlet water port is communicated with the main inlet water pipe groove, the main inlet water pipe groove is communicated with the plurality of shunt inlet water pipe grooves, and each of the shunt inlet water pipe grooves is communicated with a plurality of the liquid cooling plates corresponding to the shunt inlet water pipe groove.

[0012] Further, the inlet water port and the return water port are arranged on the same side of the base, and the return water port is arranged at the middle position of the main return water pipe groove, and the inlet water port is also arranged at the middle position of the main inlet water pipe groove.

[0013] Further, there are two shunt inlet water pipe grooves in total, and the two shunt inlet water pipe grooves are respectively arranged at both ends of the main inlet water pipe groove.

[0014] Further, there are two shunt return water pipe grooves in total, and the two shunt return water pipe grooves are respectively arranged at both ends of the main return water pipe groove.

[0015] Further, the number of the plurality of shunt inlet water pipe grooves and the number of the plurality of shunt return water pipe grooves are matched, and the projection positions of the plurality of shunt inlet water pipe grooves and the plurality of shunt return water pipe grooves on the base are matched.

[0016] Further, a row of the liquid cooling plates is arranged on each side of the extending direction of each corresponding group of the shunt inlet water pipe grooves and the shunt return water pipe grooves, and the two rows of the liquid cooling plates are arranged in a mirror image.

[0017] Further, the base further includes a module support base, and the module support base is used for connecting the base and the battery cell group.

[0018] Further, the base further includes a main return water liquid cooling support base, and the main return water liquid cooling support base is used for connecting the base and the main return water pipe groove, and the length of the main return water liquid cooling support base is matched with the length of the main return water pipe groove.

[0019] Further, the base further includes a shunt return water liquid cooling support base, which is used to connect the base and the shunt return water pipe groove. The length of the shunt return water liquid cooling support base matches the length of the shunt return water pipe groove, and the shunt return water liquid cooling support base and the module support base are set as an integral structure.

[0020] Further, at least one of the liquid cooling plates is provided on the side wall of any one of the battery cell units.

[0021] With the above technical solutions, the beneficial effects of the present utility model are as follows:

[0022] The square battery cell mesh plate type circulating liquid cooling device of the present utility model can be vertically attached to the side wall of the battery cell unit through liquid cooling plates matching the number of battery cell units, and the liquid cooling plates are simultaneously connected to the return water mechanism and the water inlet mechanism, so that during the use of the battery cell, the heat of the battery cell can be taken away by the liquid cooling plates on the side wall, and the heat dissipation effect is more uniform than that of the existing base type liquid cooling system, which helps to improve the service life of the battery cell. At the same time, while maintaining a better and more uniform heat dissipation effect on the battery cell, the square battery cell mesh plate type circulating liquid cooling device of the present utility model can still support the bottom of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present specification. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic diagram after installing a battery cell group of a square battery cell mesh plate type circulating liquid cooling device provided by an embodiment of the present specification;

[0025] Figure 2 is a schematic diagram without a battery cell group of a square battery cell mesh plate type circulating liquid cooling device provided by an embodiment of the present specification;

[0026] In the figure: 100, battery cell unit; 1, base; 11, module support base; 12, total return water liquid cooling support base; 13, shunt return water liquid cooling support base; 2, liquid cooling plate; 3, return water mechanism; 31, return water port; 32, total return water pipe groove; 33, shunt return water pipe groove; 4, water inlet mechanism; 41, water inlet; 42, total water inlet pipe groove; 43, shunt water inlet pipe groove; 44, water inlet support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this specification.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following will describe the implementation manners according to the overall structure of the present utility model.

[0029] Please refer to Figure 1-2 , which is a square battery cell mesh plate type circulating liquid cooling device for this embodiment, used to cool the battery cell group. Among them, the battery cell group is formed by arranging a plurality of battery cell units 100 in an array; its characteristics are that the square battery cell mesh plate type circulating liquid cooling device includes:

[0030] A base 1;

[0031] A plurality of liquid cooling plates 2, each liquid cooling plate 2 is vertically attached to the side wall of at least one battery cell unit 100;

[0032] A return water mechanism 3, the return water mechanism 3 is arranged on one side of the bottom of the battery cell group, the return water mechanism 3 is fixed on the base 1, the return water mechanism 3 includes a return water port 31, a main return water pipe groove 32 and a plurality of shunt return water pipe grooves 33, the return water port 31 is communicated with the main return water pipe groove 32, the main return water pipe groove 32 is communicated with the plurality of shunt return water pipe grooves 33, and each shunt return water pipe groove 33 is communicated with the corresponding plurality of liquid cooling plates 2;

[0033] An inlet water mechanism 4, the inlet water mechanism 4 is arranged on one side of the top of the battery cell group, the inlet water mechanism 4 is fixed on the return water mechanism 3 through an inlet water support frame 44, the inlet water mechanism 4 includes an inlet water port 41, a main inlet water pipe groove 42 and a plurality of shunt inlet water pipe grooves 43, the inlet water port 41 is communicated with the main inlet water pipe groove 42, the main inlet water pipe groove 42 is communicated with the plurality of shunt inlet water pipe grooves 43, and each shunt inlet water pipe groove 43 is communicated with the corresponding plurality of liquid cooling plates 2;

[0034] The number of the plurality of liquid cooling plates 2 matches the number of the battery cell units 100 , so that at least one liquid cooling plate 2 is attached to the side wall of each battery cell unit 100 .

[0035] Through the above structure, after installation, each side wall of each battery cell unit 100 is vertically attached to at least one liquid cooling plate 2. During use, first, a coolant with a relatively low temperature is input into the water return port 31 of the water return mechanism 3 through an external liquid cooling mechanism. After the coolant is poured into the main water inlet pipe groove 42 from the water inlet 41, it flows to the multiple branch water inlet pipe grooves 43 connected to the main water inlet pipe groove 42 through multiple interfaces on the main water inlet pipe groove 42. Then, the coolant flows evenly from the multiple branch water inlet pipe grooves 43 into the multiple liquid cooling plates 2 connected to the branch water inlet pipe grooves 43. Since the branch water inlet pipe grooves 43 are arranged at the top of the liquid cooling plate 2 and the branch water return pipe grooves 33 are arranged at the bottom of the battery cell unit 100, the coolant with a relatively low temperature flows from the branch water inlet pipe grooves 43 at the top of the liquid cooling plate 2 into the branch water return pipe grooves 33 at the bottom, and then can evenly absorb and take away the heat of the battery cell unit 100 attached to the side wall. Then, the coolant with a higher temperature after absorbing the heat of the battery cell unit 100 flows from the multiple branch return pipe grooves 33 into the main return pipe groove 32 and is discharged to the external liquid cooling mechanism through the unified return port 31 .

[0036] In the above process, since the number of liquid cooling plates 2 matches the battery cell unit 100, and the liquid cooling plates 2 are arranged vertically in contact with the side walls of the battery cell unit 100, the heat of the battery cell unit 100 can be evenly taken away from the side walls of the battery cell unit 100 by the coolant with a lower temperature flowing from the top of the liquid cooling plate 2 to the bottom of the liquid cooling plate 2. Compared with the liquid cooling device arranged at the bottom in the prior art, the heat of the battery cell unit 100 is transferred more evenly and efficiently during the whole process, avoiding the situation where the temperature of the battery cell unit 100 is high at one end and low at the other end. At the same time, due to the more uniform heat dissipation effect, the service life of the battery cell unit 100 is also improved to a certain extent. Moreover, the battery cell unit 100 in this embodiment can still be effectively supported by the water return mechanism 3 and the base 1 arranged at the bottom, that is, through the structure of this embodiment, while the battery cell unit 100 is more evenly cooled, the bottom support in the prior art is also realized, but the weight of the battery cell unit 100 is not supported by the entire liquid cooling system, which may cause compression deformation and affect the liquid cooling effect. Indirectly improve the heat dissipation efficiency and maintainability.

[0037] It should be noted that, in this embodiment, at least one liquid cooling plate 2 is provided on the side wall of any battery cell unit 100. A liquid cooling plate 2 is attached to both side walls of most of the battery cell units 100 arranged inside, while a liquid cooling plate 2 is attached to the inner side of the battery cell units 100 arranged at the edge positions. The purpose is to enable heat conduction on both sides of the liquid cooling plate 2 and maximize the use efficiency of the liquid cooling plate 2 at a limited cost.

[0038] Furthermore, in this embodiment, the battery cell unit 100 is set as a conventional rectangular parallelepiped battery cell, that is to say, the battery cell unit 100 has two relatively large side walls with regular shapes, and the liquid cooling plate 2 is set as a rectangular sheet-like structure matching the size of one side wall of the battery cell unit 100, so that the liquid cooling plate 2 can cover the surface of the battery cell unit 100 with the largest area and achieve the best heat dissipation effect on the battery cell unit 100. At the same time, according to the relationship of the placement positions of the battery cell units 100 after arrangement, both sides of most of the liquid cooling plates 2 in this embodiment can simultaneously cover and attach to the side walls of two battery cell units 100. In other words, liquid cooling plates 2 for heat dissipation are attached to both side walls of most of the battery cell units 100 in this embodiment. Therefore, the heat dissipation effect and the uniformity of heat dissipation can be significantly improved.

[0039] Furthermore, the water inlet 41 and the water return port 31 are arranged on the same side of the base 1, and the water return port 31 is arranged at the middle position of the total water return pipe groove 32, and the water inlet 31 is also arranged at the middle position of the total water inlet pipe groove 42. Specifically, the total water return pipe groove 32 is set as a columnar structure with a rectangular cross-section, which has a simple process and is convenient for production. The water return port 31 is arranged at the middle position of the rectangular column and faces the outside of the battery cell group. Similarly, the total water inlet pipe groove 42 is also set as a rectangular columnar structure similar to the total water return pipe groove 32, and the water inlet 41 is arranged at a position similar to the water return port 31, so that when docking with an external liquid cooling mechanism, the above-mentioned pipeline organization of flowing in from the top and flowing out from the bottom is easier, and the inlet and outlet paths of the entire water return mechanism 3 and water inlet mechanism 4 are the same, which helps to further improve the heat dissipation uniformity of multiple battery cell units 100.

[0040] Furthermore, as Figure 2As shown, it includes a total of two shunt inlet water troughs 43, and the two shunt inlet water troughs 43 are respectively arranged at both ends of the main inlet water trough 42. At the same time, it also includes two shunt return water troughs 33, and the two shunt return water troughs 33 are respectively arranged at both ends of the main return water trough 32. The number of multiple shunt inlet water troughs 44 and multiple shunt return water troughs 33 is matched, both are two, and the projection positions of the multiple shunt inlet water troughs 44 and the multiple shunt return water troughs 33 on the base 1 are matched. Specifically, the structure in this embodiment is set for the battery cell groups with 4P12S and 4P13S arrangement modes. There are a total of four groups of parallel-connected battery cell units 100, and the number of battery cell units 100 in each group of battery cell units 100 is 12 or 13. On the basis of fully considering meeting the layout requirements, more than a dozen battery cell units 100 can simultaneously achieve a relatively uniform heat dissipation and cooling effect, reducing the short-board effect of the battery cells.

[0041] Further, a row of liquid cooling plates 2 is respectively arranged on both sides along the extending direction of each corresponding shunt inlet water trough 43 and shunt return water trough 33, and the two rows of liquid cooling plates 2 are arranged in a mirror image. Specifically, multiple battery cell units 100 are arranged at equal distances left and right along the extending direction of the shunt inlet water trough 43 and shunt return water trough 33. At the same time, the positions where the inlet water trough 43 is connected to the liquid cooling plate 2 and the positions where the shunt return water trough 33 is connected to the liquid cooling plate 2 are respectively arranged on one side of the upper and lower ends of the liquid cooling plate 2, so that the cooling liquid can flow through the entire liquid cooling plate 2. The connection positions of the shunt inlet water trough 43 and the liquid cooling plate 2 at the same position are arranged opposite to each other, and the connection positions of the shunt return water trough 33 and the liquid cooling plate 2 at the same position are also arranged opposite to each other, so that the penetration effect of the cooling liquid is better and the heat transfer of the cooling liquid is more uniform.

[0042] Further, the base 1 further includes a module support base 11 for connecting the base 1 and the battery cell group. At the same time, the base 1 further includes a total return water liquid cooling support base 12 for connecting the base 1 and the total return water pipe groove 32, and the length of the total return water liquid cooling support base 12 matches the length of the total return water pipe groove 32. The base 1 further includes a shunt return water liquid cooling support base 13 for connecting the base 1 and the shunt return water pipe groove 43, and the length of the shunt return water liquid cooling support base 13 matches the length of the shunt return water pipe groove 43. At the same time, the shunt return water liquid cooling support base 13 and the module support base 11 are arranged as an integral structure. Specifically, through the above structure, the return water mechanism 3 and the battery cell group are supported by the integral module support base 11 and the shunt return water liquid cooling support base 13, and the total return water pipe groove 32 on one side of the return water port 31 is supported by the total return water liquid cooling support base 12. The sizes of the module support base 11, the total return water liquid cooling support base 12, and the shunt return water liquid cooling support base 13 match each other. The module support base 11 and the shunt return water liquid cooling support base 13 are integrally formed by bending a metal plate, and the total return water liquid cooling support base 12 is arranged as a conventional rectangular pipe column to further minimize the volume of the overall cubic battery cell network plate type circulating liquid cooling device and further control the production cost.

[0043] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described by industry standards or embodiments. Some industry standards or implementation schemes slightly modified on the basis of the implementation described by the custom method or embodiment can also achieve the same, equivalent or similar, or predictable implementation effects after deformation as the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after applying these modifications or deformations still fall within the scope of the optional implementation schemes of this application.

[0044] Although this application is depicted through embodiments, those of ordinary skill in the art know that this application has many deformations and changes without departing from the spirit of this application. It is hoped that the appended embodiments include these deformations and changes without departing from this application.

Claims

1. A cuboid battery cell grid plate type circulating liquid cooling device for cooling a battery cell group, wherein, The battery cell group is formed by arranging a plurality of battery cell units; characterized in that, the cubic battery cell grid type circulating liquid cooling device comprises: A base; A plurality of liquid cooling plates, each of the liquid cooling plates is vertically attached to the side wall of at least one of the battery cell units; A return water mechanism, the return water mechanism is arranged on one side of the bottom of the battery cell group, the return water mechanism is fixed on the base, the return water mechanism comprises a return water port, a main return water pipe groove and a plurality of shunt return water pipe grooves, the return water port is communicated with the main return water pipe groove, the main return water pipe groove is communicated with the plurality of shunt return water pipe grooves, and each of the shunt return water pipe grooves is communicated with a plurality of the liquid cooling plates corresponding to the shunt return water pipe groove; A water inlet mechanism, the water inlet mechanism is arranged on one side of the top of the battery cell group, the water inlet mechanism is fixed on the return water mechanism through a water inlet support frame, the water inlet mechanism comprises a water inlet, a main water inlet pipe groove and a plurality of shunt water inlet pipe grooves, the water inlet is communicated with the main water inlet pipe groove, the main water inlet pipe groove is communicated with the plurality of shunt water inlet pipe grooves, and each of the shunt water inlet pipe grooves is communicated with a plurality of the liquid cooling plates corresponding to the shunt water inlet pipe groove; The number of the plurality of shunt water inlet pipe grooves and the number of the plurality of shunt return water pipe grooves are matched, and the projection positions of the plurality of shunt water inlet pipe grooves and the plurality of shunt return water pipe grooves on the base are matched; One row of the liquid cooling plates is arranged on each side of the extending direction of each corresponding group of the shunt water inlet pipe grooves and the shunt return water pipe grooves, and the two rows of the liquid cooling plates are arranged in a mirror image; Wherein, the coolant with a lower temperature flows into the shunt return water pipe groove at the bottom from the shunt water inlet pipe groove at the top of the liquid cooling plate, and then can uniformly absorb and take away the heat of the battery cell units attached to the side wall.

2. The cube-shaped battery cell grid-type circulating liquid cooling device according to claim 1, wherein: The water inlet and the return water port are arranged on the same side of the base, and the return water port is arranged at the middle position of the main return water pipe groove, and the water inlet is also arranged at the middle position of the main water inlet pipe groove.

3. The cube-shaped battery cell grid plate type circulating liquid cooling device according to claim 1, characterized in that: There are two shunt water inlet pipe grooves in total, and the two shunt water inlet pipe grooves are respectively arranged at both ends of the main water inlet pipe groove.

4. The cube-shaped battery cell mesh plate type circulating liquid cooling device according to claim 1, wherein: There are two shunt return water pipe grooves in total, and the two shunt return water pipe grooves are respectively arranged at both ends of the main return water pipe groove.

5. The cube-shaped battery cell mesh plate type circulating liquid cooling device according to claim 1, characterized in that: The base further comprises a module support base, and the module support base is used for connecting the base and the battery cell group.

6. The cuboid battery cell grid plate type circulating liquid cooling device according to claim 1, wherein: The base further comprises a main return water liquid cooling support base, and the main return water liquid cooling support base is used for connecting the base and the main return water pipe groove, and the length of the main return water liquid cooling support base is matched with the length of the main return water pipe groove.

7. The cube-shaped battery cell grid plate type circulating liquid cooling device according to claim 5, characterized in that: The base further comprises a shunt return water liquid cooling support base, and the shunt return water liquid cooling support base is used for connecting the base and the shunt return water pipe groove, and the length of the shunt return water liquid cooling support base is matched with the length of the shunt return water pipe groove, and the shunt return water liquid cooling support base and the module support base are arranged as an integral structure.

8. The cube-shaped battery cell mesh-plate type circulating liquid cooling device according to claim 1, characterized in that: At least one of the liquid cooling plates is arranged on the side wall of any one of the battery cell units.

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