Energy storage liquid cooling plate

Abstract

The utility model belongs to the technical field of liquid cooling heat dissipation, and discloses an energy storage liquid cooling plate which comprises a flat plate and a runner plate installed at the lower end of the flat plate, a runner groove is formed in the upper end of the runner plate, and the upper end of the runner groove and the lower end face of the flat plate are attached in a sealed mode to form a runner cavity. The flow channel cavity comprises a liquid inlet flow channel cavity and a liquid outlet flow channel cavity, and the liquid outlet end of the liquid inlet flow channel cavity is correspondingly communicated with the liquid inlet end of the liquid outlet flow channel cavity; the liquid inlet end of the liquid inlet flow channel cavity comprises a liquid inlet and two flow dividing openings communicating with the liquid inlet. The liquid outlet end of the liquid outlet flow channel cavity comprises a liquid outlet and two confluence openings communicating with the liquid outlet, and the distance between the two flow dividing openings and the liquid inlet is larger than the distance between the two confluence openings and the liquid outlet. According to the utility model, the liquid inlet and the liquid outlet of the cooling liquid are controlled to become fast and slow, the excellent comprehensive cooling performance of the liquid cooling plate is ensured, the temperature difference of the battery cells near the inlet and the outlet can be reduced to be within 2.5 DEG C, and the influence of the temperature difference on the service life of the battery is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid cooling heat dissipation, and particularly relates to an energy storage liquid cooling plate. Background Art

[0002] At present, the new energy industry has developed rapidly, and battery energy storage technology has become the mainstream solution of new energy technology. With the increasing requirements for battery energy density and working stability, liquid cooling heat dissipation has become an important way for battery heat dissipation. The liquid cooling plate and its frame structure are important components of the liquid cooling system, playing the roles of heat dissipation, support and load-bearing, and protection.

[0003] For a conventional aluminum profile liquid cooling plate, when the structural size of the liquid cooling plate increases, the temperature difference of the entire battery pack will be greater than 3 degrees, which has a greater impact on the battery life. Therefore, it is necessary to provide a liquid cooling plate to overcome the defects existing above. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an energy storage liquid cooling plate to solve the above problems existing in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An energy storage liquid cooling plate includes a flat plate and a flow channel plate installed at the lower end of the flat plate. A flow channel groove is formed at the upper end of the flow channel plate, and the upper end of the flow channel groove is hermetically attached to the lower end surface of the flat plate to form a flow channel cavity.

[0007] The flow channel cavity includes an inlet flow channel cavity and an outlet flow channel cavity, and the outlet end of the inlet flow channel cavity is correspondingly communicated with the inlet end of the outlet flow channel cavity.

[0008] The inlet end of the inlet flow channel cavity includes an inlet and two shunt ports both communicated with the inlet. The outlet end of the outlet flow channel cavity includes an outlet and two confluence ports both communicated with the outlet. The distances between the two shunt ports and the inlet are both greater than the distances between the two confluence ports and the outlet.

[0009] As a preferred technical solution in the utility model, the distances between the two shunt ports and the inlet are not less than 200 mm, and the distances between the two confluence ports and the outlet are not greater than 180 mm.

[0010] As a preferred technical solution in the utility model, the overall width of the inlet flow channel cavity is L1, and L1 is 10 - 22 mm.

[0011] As a preferred technical solution in the utility model, the overall width of the outlet flow channel cavity is L2, and L2 is 14 - 25 mm.

[0012] As a preferred technical solution in the present utility model, a bottom support assembly is installed at the lower end of the flow channel plate.

[0013] As a preferred technical solution in the present utility model, the bottom support assembly includes a square-shaped reinforcing beam formed by splicing two longitudinal reinforcing beams and two transverse reinforcing beams, and a bottom protection plate is installed inside the square-shaped reinforcing beam; the flow channel groove is formed by protruding downward from the flow channel plate, and the bottom protection plate is matched and attached to the lower end surface of the flow channel plate.

[0014] As a preferred technical solution in the present utility model, there are 3 - 8 bottom protection plates provided.

[0015] As a preferred technical solution in the present utility model, the bottom support assembly further includes a spare reinforcing beam installed inside the square-shaped reinforcing beam.

[0016] Beneficial effects: In the present utility model, two diversion ports are provided in the liquid inlet flow channel cavity at the liquid inlet, and two confluence ports are provided in the liquid outlet flow channel cavity at the liquid outlet. Then, by controlling the distances between the two diversion ports and the liquid inlet to be both greater than the distances between the two confluence ports and the liquid outlet, the flow rate of the low-temperature coolant near the liquid inlet can be increased, shortening the cooling time of the battery cells nearby. Furthermore, the flow rate of the heated coolant near the liquid outlet is slowed down, lengthening the cooling time of the battery cells nearby. By controlling the liquid inlet and outlet of the coolant to be one fast and one slow, the excellent comprehensive cooling performance of the liquid cooling plate is ensured, so that the temperature difference between the battery cells near the inlet and outlet can be reduced to within 2.5°C through the present energy storage liquid cooling plate, reducing the influence of the temperature difference on the battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded schematic view of the present utility model;

[0018] Figure 2 is a bottom view of the present utility model;

[0019] Figure 3 is a top view of the flow channel plate in the present utility model.

[0020] In the figure: 1 - flat plate; 2 - flow channel plate; 201 - liquid inlet; 202 - diversion port; 203 - liquid outlet; 204 - confluence port; 3 - bottom support assembly; 301 - longitudinal reinforcing beam; 302 - transverse reinforcing beam; 303 - bottom protection plate; 304 - spare reinforcing beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] 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 present utility model in conjunction with the accompanying drawings and the description of the embodiments or the prior art. Obviously, the following descriptions of the structures of the accompanying drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present utility model, but do not constitute a limitation to the present utility model.

[0022] Embodiment:

[0023] As Figures 1-3 shown, this embodiment provides a energy storage liquid cooling plate, which includes a flat plate 1 and a flow channel plate 2 installed at the lower end of the flat plate 1. A flow channel groove is opened at the upper end of the flow channel plate 2, and the upper end of the flow channel groove is hermetically attached to the lower end surface of the flat plate 1 to form a flow channel cavity, which is convenient for accurately controlling the flow direction of the coolant through the flow channel cavity; the flow channel cavity includes an inlet flow channel cavity and an outlet flow channel cavity, and the outlet end of the inlet flow channel cavity is correspondingly communicated with the inlet end of the outlet flow channel cavity. Actually, it is a continuous cavity. In this embodiment, the flow channel cavity is divided into two parts for description to facilitate a better understanding of the technical solution of this application; the inlet end of the inlet flow channel cavity includes an inlet port 201 and two shunt ports 202 both connected to the inlet port 201. Of course, in practice, there can also be more than two shunt ports 202, and this embodiment does not make specific restrictions; the outlet end of the outlet flow channel cavity includes an outlet port 203 and two confluence ports 204 both connected to the outlet port 203. Similarly, in practice, there can also be more than two confluence ports 204, and this embodiment does not make specific restrictions. The distances between the two shunt ports 202 and the inlet port 201 are both greater than the distances between the two confluence ports 204 and the outlet port 203. This design is to make the flow rate of the low-temperature coolant near the inlet port 201 increase, shorten the cooling time of the battery cells near it, and slow down the flow rate of the heated coolant near the outlet port 203, lengthen the cooling time of the battery cells near it, so as to make the design of the inlet and outlet flow channel cavities one fast and one slow, aiming to reduce the temperature difference between the battery cells near the inlet and outlet to within 2.5°C.

[0024] In the present utility model, two shunt ports 202 are provided in the liquid inlet flow channel cavity at the liquid inlet 201, and two confluence ports 204 are provided in the liquid outlet flow channel cavity at the liquid outlet 203. Then, by controlling the distance between the two shunt ports 202 and the liquid inlet 201 to be greater than the distance between the two confluence ports 204 and the liquid outlet 203, the flow rate of the low-temperature coolant near the liquid inlet 201 can be increased, shortening the cooling time of the battery cells nearby, and further causing the flow rate of the heated coolant near the liquid outlet 203 to slow down, lengthening the cooling time of the battery cells nearby. By controlling the liquid inlet and outlet of the coolant to be one fast and one slow, the superior comprehensive cooling performance of the liquid cooling plate is ensured, so that the temperature difference between the battery cells near the inlet and outlet can be reduced to within 2.5°C through this energy storage liquid cooling plate, reducing the impact of the temperature difference on the battery life.

[0025] As a preferred implementation in this embodiment, it should be further noted that the distance between the two shunt ports 202 and the liquid inlet 201 is not less than 200 mm, further controlling the temperature at the liquid inlet to increase rapidly, and the distance between the two confluence ports 204 and the liquid outlet 203 is not greater than 180 mm, further controlling the temperature at the liquid outlet to increase slowly.

[0026] As a preferred implementation in this embodiment, it should be further noted that the overall width of the liquid inlet flow channel cavity is L1, and L1 is 10 - 22 mm, further controlling the temperature at the liquid inlet to increase rapidly.

[0027] As a preferred implementation in this embodiment, it should be further noted that the overall width of the liquid outlet flow channel cavity is L2, and L2 is 14 - 25 mm, further controlling the temperature at the liquid outlet to increase slowly.

[0028] As a preferred implementation in this embodiment, it should be further noted that a bottom support assembly 3 is installed at the lower end of the flow channel plate 2 to ensure the overall strength and reliability of the liquid cooling plate.

[0029] As a preferred implementation in this embodiment, it should be further noted that the bottom support assembly 3 includes a square-shaped reinforcing beam formed by splicing two longitudinal reinforcing beams 301 and two transverse reinforcing beams 302. A bottom guard plate 303 is installed inside the square-shaped reinforcing beam; the flow channel groove is formed by protruding downward from the flow channel plate 2, which can make the thickness of the flow channel plate 2 smaller, improving the practicability. The bottom guard plate 303 fits snugly with the lower end face of the flow channel plate 2, and the stamping structure of the bottom guard plate can adapt to the entire bottom structure of the flow channel plate 2, having a better fitting effect with the flow channel plate 2, and further making the structure of the liquid cooling plate more compact and reducing the cost.

[0030] As a preferred implementation in this embodiment, it should be further noted that there are 3 - 8 bottom guard plates 303 provided to ensure the best strength. The actual number can be set according to specific circumstances and is not specifically limited in this embodiment.

[0031] As a preferred implementation in this embodiment, it should be further noted that the bottom support assembly 3 further includes a spare reinforcing beam 304 installed in the mouth-shaped reinforcing beam. According to the actual situation, if there is still remaining space after installing the bottom guard plate 303 but it is not enough to install another bottom guard plate 303, then the spare reinforcing beam 304 can be installed to make the structure more compact and with better strength.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled energy storage plate, characterized in that, It includes a flat plate (1) and a runner plate (2) installed at the lower end of the flat plate (1). A runner groove is formed at the upper end of the runner plate (2), and the upper end of the runner groove is hermetically attached to the lower end surface of the flat plate (1) to form a runner cavity; The runner cavity includes an inlet runner cavity and an outlet runner cavity, and the outlet end of the inlet runner cavity is correspondingly communicated with the inlet end of the outlet runner cavity; The inlet end of the inlet runner cavity includes an inlet port (201) and two shunt ports (202) both communicated with the inlet port (201); the outlet end of the outlet runner cavity includes an outlet port (203) and two confluence ports (204) both communicated with the outlet port (203). The distances between the two shunt ports (202) and the inlet port (201) are both greater than the distances between the two confluence ports (204) and the outlet port (203).

2. The liquid-cooling plate for energy storage according to claim 1, characterized in that, The distances between the two shunt ports (202) and the inlet port (201) are not less than 200 mm, and the distances between the two confluence ports (204) and the outlet port (203) are not greater than 180 mm.

3. The liquid-cooled plate for energy storage according to claim 1 or 2, characterized in that, The overall width of the inlet runner cavity is L1, and L1 is 10 - 22 mm.

4. The liquid-cooling plate for energy storage according to claim 3, wherein The overall width of the outlet runner cavity is L2, and L2 is 14 - 25 mm.

5. The liquid-cooled plate for energy storage according to claim 1, characterized in that, A bottom support assembly (3) is installed at the lower end of the runner plate (2).

6. The liquid-cooling plate for energy storage according to claim 5, characterized in that, The bottom support assembly (3) includes a square-shaped reinforcing beam formed by splicing two longitudinal reinforcing beams (301) and two transverse reinforcing beams (302). A bottom guard plate (303) is installed inside the square-shaped reinforcing beam; the runner groove is formed by protruding downward from the runner plate (2), and the bottom guard plate (303) is fitted and attached to the lower end surface of the runner plate (2).

7. The liquid-cooling plate for energy storage according to claim 6, characterized in that, There are 3 - 8 bottom guard plates (303).

8. A liquid-cooled energy storage plate according to claim 5 or 6, characterized in that, The bottom support assembly (3) further includes a spare reinforcing beam (304) installed inside the square-shaped reinforcing beam.

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