Liquid cooling plate structure and battery pack

Abstract

The present application relates to a liquid cooling plate structure and a battery pack. The liquid cooling plate structure comprises: a liquid cooling plate body, which is internally provided with a liquid cooling cavity and a liquid inlet and a liquid outlet which are communicated with the liquid cooling cavity; a liquid inlet connector, which is detachably arranged at the liquid inlet; and a liquid outlet connector, which is detachably arranged at the liquid outlet, at least one of the liquid outlet connector and the liquid inlet connector being provided with a non-return member. The present application allows for replacing the liquid cooling plate with a new one without the need for disassembling a whole battery pack, and can achieve a backflow prevention effect.

Description

Liquid cooling plate structure and battery pack

[0001] The present application claims priority to the Chinese patent application No. 202421151532.0, filed on May 23, 2024, with the Chinese Patent Office; the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, in particular to a liquid cooling plate structure and a battery pack. BACKGROUND

[0003] In the related art, the inlet and outlet joints of the liquid cooling plate are integrated with the liquid cooling plate. SUMMARY

[0004] The inlet and outlet joints of the liquid cooling plate protrude from the liquid cooling plate, and during the installation and transportation process after the battery pack is assembled, the inlet and outlet joints are very easy to break. If the inlet and outlet joints are replaced, the entire battery pack must be disassembled, and a new liquid cooling plate must be replaced, which is very troublesome. In addition, in actual use, the inlet and outlet joints also have the problem of backflow, which greatly affects the overall cooling effect.

[0005] In a first aspect, the present application provides a liquid cooling plate structure, comprising:

[0006] a liquid cooling plate body, an internal liquid cooling cavity, an inlet liquid port and an outlet liquid port communicated with the liquid cooling cavity are arranged in the liquid cooling plate body;

[0007] an inlet liquid joint, which is detachably arranged in the inlet liquid port;

[0008] an outlet liquid joint, which is detachably arranged in the outlet liquid port; and at least one of the outlet liquid joint and the inlet liquid joint is provided with a check element.

[0009] In an embodiment of the present application, the inlet liquid joint is threaded into the inlet liquid port and is screwed with the wall surface of the inlet liquid port, and the outlet liquid joint is threaded into the outlet liquid port and is screwed with the wall surface of the outlet liquid port.

[0010] In a second aspect, the present application provides a battery pack comprising the above-mentioned liquid cooling plate structure. ADVANTAGEOUS EFFECTS

[0011] The liquid cooling plate structure provided in the application adopts a detachable structure of the liquid inlet connector and the liquid outlet connector, that is, the liquid cooling plate body and the liquid inlet connector and the liquid outlet connector are detachably connected, so that the liquid cooling plate can be directly replaced during subsequent maintenance, without the need to disassemble the entire battery pack to replace a new liquid cooling plate, which is very convenient and fast and can save maintenance costs. In addition, the liquid inlet connector and the liquid outlet connector are separately designed, can be directly machined separately, can reduce manufacturing difficulty, and can improve manufacturing efficiency. Meanwhile, the liquid outlet connector and the liquid inlet connector are provided with check valves, which can prevent backflow, ensure normal circulation of the cooling liquid, and improve the cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic diagram of a liquid cooling plate structure according to an embodiment of the application;

[0013] Fig. 2 is a structural schematic diagram of an exploded state of the liquid cooling plate structure according to the embodiment of the application;

[0014] Fig. 3 is an enlarged view of a portion A in Fig. 2;

[0015] Fig. 4 is a sectional view of an internal structure of the liquid cooling plate structure according to the embodiment of the application;

[0016] Fig. 5 is another sectional view of the internal structure of the liquid cooling plate structure according to the embodiment of the application;

[0017] Fig. 6 is a sectional view of a liquid inlet connector in the liquid cooling plate structure according to the embodiment of the application;

[0018] Fig. 7 is an enlarged view of a portion B in Fig. 6;

[0019] Fig. 8 is a schematic diagram of an internal structure of an assembly of a liquid outlet connector and a check valve in the liquid cooling plate structure according to the embodiment of the application.

[0020] In the drawings:

[0021] 1, liquid cooling plate body; 11, liquid cooling cavity; 12, liquid inlet; 13, liquid outlet; 14, main rib; 15, sub-rib; 16, reinforcing rib; 2, liquid inlet connector; 3, liquid outlet connector; 4, threaded section; 5, fixing ring; 6, non-threaded section; 7, check valve; 8, sealing ring. Embodiments of the application

[0022] The embodiment of the application discloses a liquid cooling plate structure. Referring to Figs. 1-7, the liquid cooling plate structure comprises a liquid cooling plate body 1, and the liquid cooling plate body 1 is internally provided with a liquid cooling cavity 11 and a liquid inlet 12 and a liquid outlet 13 in communication with the liquid cooling cavity 11.

[0023] The liquid cooling plate structure further comprises a liquid inlet connector 2, which is detachably arranged at the liquid inlet 12. The detachable structure can be selected from threaded connection, plug-in connection or buckle connection and the like.

[0024] The liquid cooling plate structure further comprises a liquid outlet connector 3, which is detachably arranged at the liquid outlet 13; the detachable structure can also be selected as threaded connection, plug-in connection or buckle connection, etc.

[0025] Furthermore, at least one of the liquid outlet connector 3 and the liquid inlet connector 2 is provided with a check element 7; the check element 7 can be selected as a one-way valve or a check rubber ball.

[0026] In the embodiment, the liquid cooling plate structure adopts a detachable structure of the liquid inlet connector 2 and the liquid outlet connector 3, that is, the liquid cooling plate body 1 and the liquid inlet connector 2 and the liquid outlet connector 3 are detachably connected, so that when subsequent maintenance and replacement are performed, the liquid inlet connector 2 and the liquid outlet connector 3 can be directly detached and replaced, without the need to detach the entire battery pack to replace a new liquid cooling plate, which is very convenient and fast, and can save maintenance cost. Furthermore, the liquid inlet connector 2 and the liquid outlet connector 3 are separately designed, which can be directly processed separately in the subsequent process, and can also reduce manufacturing difficulty and improve manufacturing efficiency. Meanwhile, the check element 7 is arranged in the liquid outlet connector 3 and the liquid inlet connector 2, which can prevent backflow and ensure normal circulation of the cooling liquid, thereby improving the cooling effect.

[0027] Optionally, the check element 7 is arranged in the liquid outlet connector 3 and the liquid inlet connector 2, which can simultaneously prevent backflow.

[0028]

[0029] The check element 7 is a check rubber ball; the check rubber ball in the liquid outlet connector 3 is arranged at one side of the liquid outlet connector 3 close to the liquid outlet 13; and the check rubber ball in the liquid inlet connector 2 is arranged at one side of the liquid inlet connector 2 close to the liquid inlet 12.

[0030] Referring to FIG. 7, the structure of the check rubber ball inside the liquid inlet connector 2 is shown, which can allow liquid to flow in one direction; if backflow occurs, the check rubber ball inside the liquid inlet connector 2 will block the flow passage, thereby achieving check. Similarly, referring to FIG. 8, the structure of the check rubber ball inside the liquid outlet connector 3 is shown, which can allow liquid to flow out in one direction; if backflow occurs, the check rubber ball inside the liquid outlet connector 3 will block the flow passage, thereby achieving check.

[0031] Optionally, the liquid inlet connector 2 is threadedly connected to the wall surface of the liquid inlet 12, and the liquid outlet connector 3 is threadedly connected to the wall surface of the liquid outlet 13. In the embodiment, the detachable connection between the liquid inlet connector 2 and the liquid outlet connector 3 and the liquid cooling plate body 1 can be threaded connection, which has a simple structure, is convenient for manufacturing and production, and reduces manufacturing difficulty.

[0032] ​One end of the liquid inlet connector 2 is threaded into the liquid inlet 12 and is screwed with the wall surface of the liquid inlet 12, and the other end of the liquid inlet connector 2 is provided to be connected with the external liquid cooling pipeline; one end of the liquid outlet connector 3 is threaded into the liquid outlet 13 and is screwed with the wall surface of the liquid outlet 13, and the other end of the liquid outlet connector 3 is provided to be connected with the external liquid cooling pipeline, so as to form a cooling liquid circulation in the liquid cooling plate structure and set to dissipate heat for the battery.

[0033] Of course, in other optional embodiments, the liquid inlet connector and the liquid outlet connector are each buckled with the corresponding liquid inlet and liquid outlet.

[0034] Optionally, the liquid inlet connector 2 and the liquid outlet connector 3 each have a threaded segment 4, a fixing ring 5, and a sealing ring 8, the area between the fixing ring 5 and the threaded segment 4 of the liquid inlet connector 2 and the area between the fixing ring 5 and the threaded segment 4 of the liquid outlet connector 3 are both non-threaded segments 6, and the sealing ring 8 of the liquid inlet connector 2 is fitted on the non-threaded segment 6 of the liquid inlet connector 2, and the sealing ring 8 of the liquid outlet connector 3 is fitted on the non-threaded segment 6 of the liquid outlet connector 3. In this embodiment, since the liquid inlet connector 2 and the liquid outlet connector 3 are both detachably connected with the liquid cooling plate body 1, the sealing performance will be weakened to some extent, so the sealing performance of the connection is improved by setting the sealing ring 8. In specific use, when the liquid inlet connector 2 and the liquid outlet connector 3 are both fitted on the liquid cooling plate body 1, the liquid inlet connector 2 and the liquid outlet connector 3 each press the sealing ring 8 against the liquid cooling plate body 1 to improve the sealing performance of the connection to prevent water leakage. Moreover, the sealing ring 8 is also fitted on the non-threaded segment 6 to avoid the problem of sealing failure of the sealing ring 8 caused by the threaded segment 4.

[0035] For the liquid inlet connector 2, the sealing ring 8 on the liquid inlet connector 2 can be pressed between the circumferential outer wall of the non-threaded segment 6 of the liquid inlet connector 2 and the inner wall of the liquid inlet 12; for the liquid outlet connector 3, the sealing ring 8 on the liquid outlet connector 3 can be pressed between the circumferential outer wall of the non-threaded segment 6 of the liquid outlet connector 3 and the inner wall of the liquid outlet 13.

[0036] Of course, in other embodiments, the sealing ring can also be pressed by the fixing ring, for example, the sealing ring on the liquid inlet connector can be pressed between the fixing ring on the liquid inlet connector and the side frame of the liquid cooling plate body; for example, the sealing ring on the liquid outlet connector can be pressed between the fixing ring on the liquid outlet connector and the side frame of the liquid cooling plate body.

[0037] Optionally, the liquid inlet 12 and the liquid outlet 13 are provided on the same side of the liquid cooling plate body 1. In specific use, the liquid inlet connector 2 and the liquid outlet connector 3 are more convenient and fast to disassemble and assemble.

[0038] Optionally, the openings of both the liquid inlet 12 and the liquid outlet 13 are flush with the side frame of the liquid cooling plate body 1. In the specific design, in order to better protect the structure of the liquid inlet 12 and the liquid outlet 13, the liquid inlet 12 and the liquid outlet 13 are flush with the side frame of the liquid cooling plate body 1, and do not protrude from the side frame of the liquid cooling plate body 1, so as not to easily cause the liquid inlet 12 and the liquid outlet 13 to deform, and effectively strengthen the structural strength of the liquid inlet 12 and the liquid outlet 13.

[0039] Optionally, the liquid cooling plate body 1 is provided with a main rib 14 extending along the length direction of the liquid cooling plate body 1. The main rib 14 divides the liquid cooling cavity 11 into a liquid inlet channel communicated with the liquid inlet 12 and a liquid outlet channel communicated with the liquid outlet 13, and the liquid inlet channel and the liquid outlet channel are communicated. In this embodiment, the main rib 14 is arranged in the liquid cooling plate body 1 to divide the liquid cooling cavity 11 into the liquid inlet channel and the liquid outlet channel, so as to guide the flow direction of the cooling liquid and better cool the battery.

[0040] Optionally, the liquid cooling cavity 11 has a U-shaped overall shape. In this way, the structure is simple, easy to manufacture and reduces manufacturing difficulty.

[0041] Optionally, the liquid cooling plate body 1 is provided with a plurality of sub-ribs 15 extending along the length direction of the liquid cooling plate body 1. The liquid inlet channel is provided with at least one sub-rib 15, and / or the liquid outlet channel is provided with at least one sub-rib 15. In this embodiment, by arranging the sub-ribs 15 in the liquid inlet channel and the liquid outlet channel, the cooling liquid can be dispersed and flowed in the liquid inlet channel and the liquid outlet channel, so as to increase the flow area of the cooling liquid, thereby realizing larger area cooling and improving the cooling effect.

[0042] Optionally, the cavity walls of the liquid inlet channel and the liquid outlet channel are provided with a plurality of reinforcing ribs 16, and the extension direction of the reinforcing ribs 16 is inclined to the length direction of the liquid cooling plate body 1. In this embodiment, the reinforcing ribs 16 are arranged in the liquid inlet channel and the liquid outlet channel to strengthen the structural strength of the liquid cooling plate body 1 and prolong the service life.

[0043] Optionally, the reinforcing ribs 16 in the liquid inlet channel and the reinforcing ribs 16 in the liquid outlet channel are symmetrically arranged relative to the main rib 14, which is simple in structure, easy to manufacture and reduces manufacturing difficulty.

[0044] The embodiment of the application also discloses a battery pack comprising the liquid cooling plate structure. The battery pack also adopts the detachable structure of the liquid inlet connector 2 and the liquid outlet connector 3, that is, the liquid cooling plate body 1 and the liquid inlet connector 2 and the liquid outlet connector 3 are detachably connected, so that the liquid inlet connector 2 and the liquid outlet connector 3 can be directly replaced during subsequent maintenance and replacement, the whole battery pack does not need to be disassembled and replaced with a new liquid cooling plate, the operation is very convenient and fast, and the maintenance cost can be saved. In addition, the liquid inlet connector 2 and the liquid outlet connector 3 are separately designed, can be directly processed separately in the subsequent process, can also reduce the manufacturing difficulty, and improve the manufacturing efficiency.

Claims

1. A liquid cooling plate structure, comprising: a liquid cooling plate body (1) internally provided with a liquid cooling cavity (11) and a liquid inlet (12) and a liquid outlet (13) in communication with the liquid cooling cavity (11); a liquid inlet connector (2) detachably arranged at the liquid inlet (12); a liquid outlet connector (3) detachably arranged at the liquid outlet (13); and at least one of the liquid outlet connector (3) and the liquid inlet connector (2) is provided with a check element (7).

2. The liquid cold plate structure of claim 1, wherein, The liquid inlet connector (2) is arranged into the liquid inlet (12) and is threadedly connected with the wall surface of the liquid inlet (12), and the liquid outlet connector (3) is arranged into the liquid outlet (13) and is threadedly connected with the wall surface of the liquid outlet (13).

3. The liquid cold plate structure of claim 2, wherein, The liquid inlet connector (2) and the liquid outlet connector (3) each have a threaded section (4), a fixing ring (5) and a sealing ring (8), the area between the fixing ring (5) and the threaded section (4) of the liquid inlet connector (2) and the area between the fixing ring (5) and the threaded section (4) of the liquid outlet connector (3) are each a non-threaded section (6), the sealing ring (8) of the liquid inlet connector (2) is fitted to the non-threaded section (6) of the liquid inlet connector (2), and the sealing ring (8) of the liquid outlet connector (3) is fitted to the non-threaded section (6) of the liquid outlet connector (3).

4. The liquid cold plate structure of claim 3, wherein, The sealing ring (8) of the liquid inlet connector (2) is compressed between the circumferential outer wall of the non-threaded section (6) of the liquid inlet connector (2) and the inner wall of the liquid inlet (12).

5. The liquid cold plate structure of claim 3, wherein, The sealing ring (8) of the liquid outlet connector (3) is compressed between the circumferential outer wall of the non-threaded section (6) of the liquid outlet connector (3) and the inner wall of the liquid outlet (13).

6. The liquid cold plate structure of claim 1, wherein, The liquid inlet (12) and the liquid outlet (13) are arranged on the same side of the liquid cooling plate body (1).

7. The liquid cold plate structure of any one of claims 1-6, wherein, The openings of the liquid inlet (12) and the liquid outlet (13) are flush with the side frame of the liquid cooling plate body (1).

8. The liquid cold plate structure of any one of claims 1-6, wherein, The liquid cooling plate body (1) is internally provided with a main rib (14) extending along the length direction of the liquid cooling plate body (1). The main rib (14) divides the liquid cooling cavity (11) into a liquid inlet channel in communication with the liquid inlet (12) and a liquid outlet channel in communication with the liquid outlet (13), and the liquid inlet channel and the liquid outlet channel are in communication.

9. The liquid cold plate structure of claim 8, wherein, The liquid cooling cavity (11) has a U-shaped overall shape.

10. The liquid cold plate structure of claim 8, wherein, The liquid cooling plate body (1) is internally provided with a plurality of sub-ribs (15) extending along the length direction of the liquid cooling plate body (1). At least one sub-rib (15) is arranged in the liquid inlet channel; and / or at least one sub-rib (15) is arranged in the liquid outlet channel.

11. The liquid cold plate structure of claim 8, wherein, The cavity walls of the liquid inlet channel and the liquid outlet channel are each provided with a plurality of reinforcing ribs (16) extending obliquely relative to the length direction of the liquid cooling plate body (1).

12. The liquid cold plate structure of claim 11, wherein, The reinforcing ribs (16) in the liquid inlet channel and the reinforcing ribs (16) in the liquid outlet channel are symmetrically arranged relative to the main rib (14).

13. The liquid cold plate structure of any one of claims 1-6, wherein, The check element (7) is a check rubber ball. The check rubber ball in the liquid outlet connector (3) is arranged in the liquid outlet connector (3) near one side of the liquid outlet (13); The check rubber ball in the liquid inlet connector (2) is arranged in the liquid inlet connector (2) near one side of the liquid inlet (12).

14. A battery pack comprising a liquid cooling plate structure according to any one of claims 1-13.

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