Liquid cooling plate and liquid cooling box

Abstract

The utility model provides a liquid cooling plate and a liquid cooling box, the liquid cooling plate comprises a surface plate and a flow channel plate, the flow channel plate is arranged below the surface plate and is laminated with the surface plate, the flow channel plate comprises a pipeline part formed by protruding downwards, the pipeline part and the surface plate form a cooling flow channel, the pipeline part comprises a first pipeline part and a second pipeline part, the first pipeline part and the second pipeline part are symmetrically arranged, the first pipeline part and the second pipeline part are not communicated with each other, the first pipeline part comprises a first liquid inlet and a first liquid outlet, and the second pipeline part comprises a second liquid inlet and a second liquid outlet. According to the liquid cooling plate, the pipeline part is designed into the first pipeline part and the second pipeline part which are not mutually symmetrical and not communicated, so that the overall flow resistance of the liquid cooling plate can be reduced, the working load of a compressor is reduced, and the flow on the two sides of the liquid cooling plate is uniform, so that the heat dissipation effect is consistent, and the temperature equalization performance of the liquid cooling plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries and energy storage, in particular to a liquid cooling plate and a liquid cooling box. Background Art

[0002] In the prior art, the battery module is one of the core components of the energy storage battery pack. The performance of the battery is an important indicator of energy storage. The activity of new energy batteries is significantly affected by temperature. Its characteristics determine that the most suitable working temperature is between 20-40°C. Due to increasingly fierce competition, the energy density requirements for battery packs in the energy storage industry have been continuously improved, that is, the improvement of battery capacity and power. As a result, more heat is generated.

[0003] In the existing battery thermal management technology, liquid cooling heat exchange is adopted. At present, most of them are formed by brazing two plates together to form a phase change cavity inside. However, there are problems such as a large overall flow resistance of the liquid cooling plate, uneven flow distribution of the cooling medium in the internal cavity of the liquid cooling plate, poor temperature uniformity performance of the liquid cooling plate, and poor effect of battery temperature management.

[0004] Therefore, it is necessary to provide a liquid cooling plate and a liquid cooling box to overcome the above-mentioned defects. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a liquid cooling plate and a liquid cooling box.

[0006] According to one aspect of the utility model, a liquid cooling plate is provided, including:

[0007] A flat plate;

[0008] A flow channel plate, the flow channel plate is placed below the flat plate and stacked with the flat plate. The flow channel plate includes a pipeline part formed by protruding downward, and the pipeline part and the flat plate form a cooling flow channel;

[0009] The pipeline part includes a first pipeline part and a second pipeline part. The first pipeline part and the second pipeline part are symmetrically arranged with each other. The first pipeline part and the second pipeline part are not communicated with each other. The first pipeline part includes a first liquid inlet and a first liquid outlet. The second pipeline part includes a second liquid inlet and a second liquid outlet.

[0010] Preferably, the first pipeline part is located on one side of the midline in the length direction of the flow channel plate, and the second pipeline part is located on the other side of the midline in the length direction of the flow channel plate. The first pipeline part and the second pipeline part are symmetrically distributed about the midline.

[0011] Preferably, both the first liquid inlet and the first liquid outlet are arranged close to the midline.

[0012] Preferably, the first liquid inlet and the first liquid outlet are arranged on the same side in the length direction of the flow channel plate and are adjacent to each other front and back.

[0013] Preferably, the first pipeline part includes a plurality of branch groups connected in sequence. Each branch group includes 2 branch flow channels arranged in parallel with each other. The first liquid inlet communicates with the first liquid outlet through a plurality of branch groups connected in sequence.

[0014] Preferably, the branch group directly connected to the first liquid inlet is connected to the first liquid inlet through a Y-shaped branch part, and the branch group directly connected to the first liquid outlet is connected to the first liquid outlet through a Y-shaped branch part.

[0015] Preferably, in adjacent branch groups, the previous branch group is connected to the next branch group through 2 interconnected Y-shaped branch parts. The previous Y-shaped branch part conducts confluence, and the next Y-shaped branch part conducts divergence.

[0016] Preferably, it further includes a liquid inlet joint and a liquid outlet joint. The liquid inlet joint and the liquid outlet joint have the same structure. The liquid inlet joint communicates the first liquid inlet and the second liquid inlet, and the liquid outlet joint communicates the first liquid outlet and the second liquid outlet.

[0017] Preferably, the liquid inlet joint includes a first sub-inflow channel communicating with the first liquid inlet, a second sub-inflow channel communicating with the second liquid inlet, and an inlet flow channel communicating the first sub-inflow channel and the second sub-inflow channel. The liquid outlet joint includes a first sub-outflow channel communicating with the first liquid outlet, a second sub-outflow channel communicating with the second liquid outlet, and an outlet flow channel communicating the first sub-outflow channel and the second sub-outflow channel.

[0018] According to another aspect of the present invention, there is provided a liquid cooling box, including the above-mentioned liquid cooling plate and a box body covering the liquid cooling plate.

[0019] Compared with the prior art, the liquid cooling plate and the liquid cooling box provided by the present invention have the following beneficial effects:

[0020] Due to the adoption of the above technical solution, the present invention has the advantages of simple structure, ingenious design, and low cost. By designing the pipeline part into a first pipeline part and a second pipeline part that are non-symmetrical and non-connected to each other, the overall flow resistance of the liquid cooling plate can be reduced, the load on the compressor can be reduced during operation, and the flow rates on both sides of the liquid cooling plate can be made uniform so that the heat dissipation effect is consistent. Furthermore, the temperatures in different regions of the liquid cooling plate can be the same at the same time, improving the uniform temperature performance of the liquid cooling plate and enhancing the effect of battery temperature management. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present invention in detail with reference to the drawings and specific embodiments:

[0022] Figure 1 is a perspective view of the liquid cooling plate of the present utility model;

[0023] Figure 2 is a top view of the flow channel plate of the present utility model;

[0024] Figure 3 is a schematic view at the first pipeline part of the flow channel plate of the present utility model;

[0025] Figure 4 is Figure 3 an enlarged view of part A of

[0026] Figure 5 is Figure 3 an enlarged view of part B of

[0027] Figure 6 is a top view of the liquid cooling plate of the present utility model;

[0028] Figure 7 is Figure 6 a sectional view taken along line A - A of

[0029] Figure 8 is a perspective view of the liquid cooling box of the present utility model.

[0030] Among them, 1, flat plate; 2, flow channel plate; 21, first pipeline part; 211, first liquid inlet; 212, first liquid outlet; 213, branch group; 2131, branch flow channel; 22, second pipeline part; 221, second liquid inlet; 222, second liquid outlet; 3, Y - shaped branch part; 31, confluence end; 32, bifurcation end; 4, liquid inlet joint; 41, first sub - inlet flow channel; 42, second sub - inlet flow channel; 43, inlet flow channel; 5, liquid outlet joint; 6, box body. Specific embodiments

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] To make the drawings concise, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0033] It should also be further understood that the term "and / or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] In this context, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation manners of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0037] See Figure 1 and Figure 2 , this embodiment discloses a liquid cooling plate, which includes a flat plate 1, a flow channel plate 2, a liquid inlet joint 4, and a liquid outlet joint 5. The flow channel plate 2 is placed below the flat plate 1 and stacked with the flat plate 1. The flow channel plate 2 includes a pipe portion formed by protruding downward, and the pipe portion and the flat plate 1 form a cooling flow channel.

[0038] See Figure 2 , Figure 3 and Figure 4 , the pipe portion includes a first pipe portion 21 and a second pipe portion 22. The first pipe portion 21 is located on one side of the center line L in the length direction of the flow channel plate 2, and the second pipe portion 22 is located on the other side of the center line L in the length direction of the flow channel plate 2. The first pipe portion 21 and the second pipe portion 22 are symmetrically distributed about the center line L, and the first pipe portion 21 and the second pipe portion 22 are not connected to each other. The first pipe portion 21 includes a first liquid inlet 211 and a first liquid outlet 212, and the second pipe portion 22 includes a second liquid inlet 221 and a second liquid outlet 222.

[0039] In other embodiments, according to actual requirements, the first pipeline part 21 and the second pipeline part 22 may also be respectively arranged on both sides of the center line L in the width direction of the flow channel plate 2. The first pipeline part 21 and the second pipeline part 22 are symmetrically distributed with respect to the center line L, and the first pipeline part 21 and the second pipeline part 22 are not communicated with each other.

[0040] Both the first liquid inlet 211 and the first liquid outlet 212 are arranged close to the center line L. The first liquid inlet 211 and the first liquid outlet 212 are arranged on the same side in the length direction of the flow channel plate 2 and are adjacent to each other front and back.

[0041] The first pipeline part 21 includes a plurality of branch groups 213 connected in sequence. Each branch group 213 includes 2 branch flow channels 2131 arranged in parallel with each other. The first liquid inlet 211 is communicated with the first liquid outlet 212 through a plurality of branch groups 213 connected in sequence. The branch group 213 directly connected to the first liquid inlet 211 is connected to the first liquid inlet 211 through a Y-shaped branch part 3, that is, the confluence end 31 of the Y-shaped branch part 3 is connected to the first liquid inlet 211, and the bifurcated end 32 of the Y-shaped branch part 3 is connected to the branch flow channel 2131. The branch group 213 directly connected to the first liquid outlet 212 is connected to the first liquid outlet 212 through a Y-shaped branch part 3, that is, the confluence end 31 of the Y-shaped branch part 3 is connected to the first liquid outlet 212, and the bifurcated end 32 of the Y-shaped branch part 3 is connected to the branch flow channel 2131.

[0042] In adjacent branch groups 213, the previous branch group 213 is connected to the next branch group 213 through 2 mutually connected Y-shaped branch parts 3. The bifurcated end 32 of the previous Y-shaped branch part 3 is connected to the previous branch group 213, the bifurcated end 32 of the next Y-shaped branch part 3 is connected to the next branch group 213, and the confluence end 31 of the previous Y-shaped branch part 3 is connected to the confluence end 31 of the next Y-shaped branch part 3, that is, the previous Y-shaped branch part 3 performs confluence, and the next Y-shaped branch part 3 performs diversion.

[0043] The liquid inlet joint 4 and the liquid outlet joint 5 have the same structure and are both fixed on the flat plate 1. The liquid inlet joint 4 communicates the first liquid inlet 211 and the second liquid inlet 221, and the liquid outlet joint 5 communicates the first liquid outlet 212 and the second liquid outlet 222. The liquid inlet joint 4 includes a first sub-inflow channel 41 communicated with the first liquid inlet 211, a second sub-inflow channel 42 communicated with the second liquid inlet 221, and an inlet flow channel 43 communicating the first sub-inflow channel 41 and the second sub-inflow channel 42. The liquid outlet joint 5 includes a first sub-outflow channel (not shown in the figure) communicated with the first liquid outlet 212, a second sub-outflow channel (not shown in the figure) communicated with the second liquid outlet 222, and an outlet flow channel (not shown in the figure) communicating the first sub-outflow channel and the second sub-outflow channel.

[0044] See Figure 8, this embodiment also discloses a liquid cooling box, which includes the above-mentioned liquid cooling plate and a box body 6 covering the liquid cooling plate.

[0045] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention falling within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A liquid cooling plate, characterized in that: include: Flat panels; A flow channel plate, the flow channel plate is placed below the plane plate and stacked with the plane plate, the flow channel plate includes a pipeline portion formed by protruding downward, and the pipeline portion and the plane plate constitute a cooling flow channel; The pipeline portion includes a first pipeline portion and a second pipeline portion, the first pipeline portion and the second pipeline portion are symmetrically arranged with respect to each other, the first pipeline portion and the second pipeline portion are not connected with each other, the first pipeline portion includes a first liquid inlet and a first liquid outlet, and the second pipeline portion includes a second liquid inlet and a second liquid outlet.

2. The liquid cooling plate according to claim 1, characterized in that: The first pipeline portion is located on one side of the center line of the flow channel plate in the length direction, and the second pipeline portion is located on the other side of the center line of the flow channel plate in the length direction. The first pipeline portion and the second pipeline portion are symmetrically distributed about the center line.

3. The liquid cooling plate according to claim 2, characterized in that: The first liquid inlet and the first liquid outlet are both arranged close to the midline.

4. The liquid cooling plate according to claim 3, characterized in that: The first liquid inlet and the first liquid outlet are arranged on the same side of the length direction of the flow channel plate, and are arranged adjacent to each other front and back.

5. The liquid cooling plate according to claim 4, characterized in that: The first pipeline portion includes a plurality of branch groups connected in sequence, each of the branch groups includes two branch flow channels arranged parallel to each other, and the first liquid inlet is connected to the first liquid outlet through the plurality of branch groups connected in sequence.

6. The liquid cooling plate according to claim 5, characterized in that: The branch group directly connected to the first liquid inlet is connected to the first liquid inlet through a Y-shaped branch portion, and the branch group directly connected to the first liquid outlet is connected to the first liquid outlet through a Y-shaped branch portion.

7. The liquid cooling plate according to claim 6, characterized in that: In the adjacent branch groups, the preceding branch group is connected to the following branch group through two mutually connected Y-shaped branch portions, the preceding Y-shaped branch portion performs confluence, and the following Y-shaped branch portion performs divergence.

8. The liquid cooling plate according to claim 7, characterized in that: It also includes a liquid inlet joint and a liquid outlet joint, the liquid inlet joint and the liquid outlet joint have the same structure, the liquid inlet joint is connected to the first liquid inlet and the second liquid inlet, and the liquid outlet joint is connected to the first liquid outlet and the second liquid outlet.

9. The liquid cooling plate according to claim 8, characterized in that: The liquid inlet joint includes a first branch inlet channel connected to the first liquid inlet, a second branch inlet channel connected to the second liquid inlet, and a liquid inlet channel connecting the first branch inlet channel and the second branch inlet channel. The liquid outlet joint includes a first branch outlet channel connected to the first liquid outlet, a second branch outlet channel connected to the second liquid outlet, and a liquid outlet channel connecting the first branch outlet channel and the second branch outlet channel.

10. A liquid cooling box, characterized in that: It comprises the liquid cooling plate as claimed in any one of claims 1 to 9, and a box body covering the liquid cooling plate.

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