Liquid cooling plate structure and battery pack

Abstract

The utility model 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, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the liquid cooling cavity; the liquid inlet connector is detachably arranged at the liquid inlet; the liquid outlet connector is detachably arranged at the liquid outlet; and at least one of the liquid outlet joint and the liquid inlet joint is provided with a non-return piece. According to the liquid cooling plate structure, the liquid cooling plate body is detachably connected with the liquid inlet connector and the liquid outlet connector, so that the liquid cooling plate can be directly detached and replaced during subsequent maintenance and replacement, the whole battery pack does not need to be detached to replace a new liquid cooling plate, the operation is very convenient and rapid, and the maintenance cost can be saved. Meanwhile, non-return pieces are further specifically arranged in the liquid outlet connector and the liquid inlet connector, the function of preventing backflow can be achieved, it is guaranteed that the cooling liquid can be normally circulated and cooled, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a liquid cooling plate structure and a battery pack. Background Art

[0002] The water inlet and outlet joints provided on the liquid cooling plate in the prior art are integrated with the liquid cooling plate, and the water inlet and outlet joints also protrude from the liquid cooling plate. After the battery pack is assembled, the water inlet and outlet joints are very easy to break during installation and transportation. If they are replaced, the entire battery pack must be dismantled and a new liquid cooling plate must be replaced, which is very troublesome. In actual use, it is found that the water inlet and outlet joints will also have a backflow problem, which greatly affects the overall cooling effect. There is room for improvement. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art, according to one aspect of the present invention, a liquid cooling plate structure is provided.

[0004] A liquid cooling plate structure, comprising:

[0005] A liquid cooling plate body, wherein a liquid cooling cavity and a liquid inlet and a liquid outlet communicating with the liquid cooling cavity are arranged inside the liquid cooling plate body;

[0006] A liquid inlet connector, which is detachably arranged at the liquid inlet;

[0007] A liquid outlet connector is detachably disposed at the liquid outlet; and at least one of the liquid outlet connector and the liquid inlet connector is provided with a check piece.

[0008] In one embodiment of the utility model, the liquid inlet joint is inserted into the liquid inlet and is threadedly connected to the wall surface of the liquid inlet, and the liquid outlet joint is inserted into the liquid outlet and is threadedly connected to the wall surface of the liquid outlet.

[0009] In one embodiment of the utility model, the liquid inlet joint and the liquid outlet joint each have a threaded section, a fixing ring and a sealing ring, and the area between the fixing ring and the threaded section of the liquid inlet joint and the liquid outlet joint is a non-threaded section for assembling the respective sealing rings.

[0010] In an embodiment of the present invention, the liquid inlet and the liquid outlet are arranged on the same side of the liquid cooling plate body.

[0011] In an embodiment of the present invention, the openings of the liquid inlet and the liquid outlet are arranged flush with the side frame of the liquid cooling plate body.

[0012] In one embodiment of the utility model, a main rib is provided in the liquid cooling plate body, and the main rib is extended along the length direction of the liquid cooling plate body;

[0013] The main rib divides the liquid cooling cavity into a liquid inlet channel connected to the liquid inlet and a liquid outlet channel connected to the liquid outlet, and the liquid inlet channel and the liquid outlet channel are connected;

[0014] The overall shape of the liquid cooling chamber is U-shaped.

[0015] In one embodiment of the utility model, a plurality of ribs are arranged in the liquid cooling plate body, and the ribs are extended along the length direction of the liquid cooling plate body;

[0016] At least one dividing rib is arranged in the liquid inlet channel; and / or at least one dividing rib is arranged in the liquid outlet channel.

[0017] In one embodiment of the utility model, the cavity walls of the liquid inlet channel and the liquid outlet channel are provided with a plurality of reinforcing ribs, and the extending direction of the reinforcing ribs is arranged obliquely with respect to the length direction of the liquid cooling plate body;

[0018] The reinforcing ribs in the liquid inlet channel and the liquid outlet channel are respectively arranged symmetrically with respect to the main ribs.

[0019] In one embodiment of the utility model, both the liquid outlet joint and the liquid inlet joint are provided with a check piece, and the check piece is a check rubber ball;

[0020] The check rubber ball in the liquid outlet joint is arranged on one side of the liquid outlet joint close to the liquid outlet;

[0021] The check rubber ball in the liquid inlet joint is arranged on one side of the liquid inlet joint close to the liquid inlet.

[0022] According to another aspect of the present application, a battery pack is provided, comprising the above-mentioned liquid cooling plate structure.

[0023] In summary, the liquid cooling plate structure and battery pack provided by the utility model have the following technical effects:

[0024] The liquid cooling plate structure specifically adopts a detachable structure of the liquid inlet and outlet joints, that is, the liquid cooling plate body and the liquid inlet and outlet joints are detachably connected. When performing subsequent repairs and replacements, they can be directly removed and replaced without removing the entire battery pack to replace a new liquid cooling plate. The operation is very convenient and quick, and it can also save maintenance costs. In addition, the liquid inlet and outlet joints are designed separately, and can be directly processed separately in the future, which can also reduce the difficulty of manufacturing and improve manufacturing efficiency. At the same time, check pieces will be specifically set in the liquid outlet and inlet joints to prevent backflow, ensure that the coolant can circulate and cool normally, and improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a liquid cooling plate structure according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic structural diagram of a liquid cooling plate structure in an exploded state according to an embodiment of the utility model;

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 A cross-sectional view of the internal structure of the liquid cooling plate structure of an embodiment of the utility model;

[0029] Figure 5 It is another cross-sectional view of the internal structure of the liquid cooling plate structure of an embodiment of the utility model;

[0030] Figure 6 A cross-sectional view of a liquid inlet joint in a liquid cooling plate structure according to an embodiment of the utility model;

[0031] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0032] Figure 8 It is a schematic diagram of the internal structure of the assembly of the liquid outlet joint and the check member in the liquid cooling plate structure of the embodiment of the utility model;

[0033] Figures: 1-liquid cooling plate body, 11-liquid cooling cavity, 12-liquid inlet, 13-liquid outlet, 14-main rib, 15-dividing rib, 16-reinforcement rib, 2-liquid inlet joint, 3-liquid outlet joint, 4-threaded section, 5-fixing ring, 6-non-threaded section, 7-check piece, 8-sealing ring. DETAILED DESCRIPTION

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] The embodiment of the utility model discloses a liquid cooling plate structure, referring to Figure 1-Figure 7 The liquid cooling plate structure includes a liquid cooling plate body 1 , wherein a liquid cooling cavity 11 and a liquid inlet 12 and a liquid outlet 13 communicating with the liquid cooling cavity 11 are arranged inside the liquid cooling plate body 1 .

[0038] The liquid cooling plate structure also includes a liquid inlet connector 2, which is detachably disposed at the liquid inlet 12; the specific detachable structure may be a threaded connection, a plug-in connection, or a snap-on connection.

[0039] The liquid cooling plate structure also includes a liquid outlet connector 3, which is detachably disposed at the liquid outlet 13; wherein the specific detachable structure may also be selected as a threaded connection, a plug-in connection or a snap-on connection, etc.

[0040] Furthermore, at least one of the liquid outlet connector 3 and the liquid inlet connector 2 is provided with a check member 7; the check member 7 can be specifically selected to be a one-way valve or a check rubber ball.

[0041] In this specific embodiment, the liquid cooling plate structure will specifically adopt 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. When performing subsequent maintenance and replacement, they can be directly removed and replaced without removing the entire battery pack to replace a new liquid cooling plate. The operation is very convenient and quick, and it can also save maintenance costs. In addition, the liquid inlet connector 2 and the liquid outlet connector 3 are designed separately, and can be directly processed separately in the future, which can also reduce the manufacturing difficulty and improve the manufacturing efficiency. At the same time, a check member 7 will be specifically provided in the liquid outlet connector 3 and the liquid inlet connector 2, which can prevent backflow, ensure that the coolant can circulate and cool normally, and improve the cooling effect.

[0042] Optionally, both the liquid outlet connector 3 and the liquid inlet connector 2 are provided with a check piece 7, which can simultaneously prevent backflow.

[0043] Specifically, the check member 7 is a check rubber ball; the check rubber ball in the liquid outlet joint 3 is arranged on a side of the liquid outlet joint 3 close to the liquid outlet 13; the check rubber ball in the liquid inlet joint 2 is arranged on a side of the liquid inlet joint 2 close to the liquid inlet 12.

[0044] For details, please refer to Figure 7 , specifically showing the structure of the check rubber ball inside the liquid inlet connector 2, which can only allow one-way liquid inflow. If backflow occurs, the check rubber ball inside the liquid inlet connector 2 will block the flow channel to achieve check flow. Similarly, please refer to Figure 8 , specifically showing the structure of the non-return rubber ball inside the liquid outlet joint 3, which can discharge liquid in one direction. If backflow occurs, the non-return rubber ball inside the liquid outlet joint 3 will block the flow channel to achieve non-return.

[0045] Optionally, the liquid inlet connector 2 is inserted into the liquid inlet 12 and is threadedly connected to the wall of the liquid inlet 12, and the liquid outlet connector 3 is inserted into the liquid outlet 13 and is threadedly connected to the wall of the liquid outlet 13. In this specific embodiment, the detachable connection between the liquid inlet connector 2, the liquid outlet connector 3 and the liquid cooling plate body 1 can be a threaded connection, and the threaded connection structure is simple, easy to manufacture, and reduces the manufacturing difficulty.

[0046] In the specific structure, one end of the liquid inlet connector 2 is passed through the liquid inlet 12 and is threadedly connected to the wall of the liquid inlet 12, and the other end of the liquid inlet connector 2 is used to connect to an external liquid inlet cooling pipeline; one end of the liquid outlet connector 3 is passed through the liquid outlet 13 and is threadedly connected to the wall of the liquid outlet 13, and the other end of the liquid outlet connector 3 is used to connect to an external liquid outlet cooling pipeline to form a coolant circulation in the liquid cooling plate structure for dissipating heat from the battery.

[0047] Of course, in other optional embodiments, the liquid inlet connector and the liquid outlet connector are respectively snap-connected with the corresponding liquid inlet and liquid outlet.

[0048] Optionally, 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, and the area between the fixing ring 5 and the threaded section 4 of each of the liquid inlet connector 2 and the liquid outlet connector 3 is a non-threaded section 6 for assembling the respective sealing rings 8. In this specific embodiment, since the liquid inlet connector 2 and the liquid outlet connector 3 are detachably connected to the liquid cooling plate body 1, the sealing performance will be weakened to a certain extent, so the sealing performance of the connection is improved by specifically setting the sealing ring 8. In specific use, when the liquid inlet connector 2 and the liquid outlet connector 3 are assembled to the liquid cooling plate body 1, the liquid inlet connector 2 and the liquid outlet connector 3 are each pressed tightly against the sealing ring 8 with the liquid cooling plate body 1 to improve the sealing performance of the connection to prevent water leakage. In addition, the sealing ring 8 will also be specifically assembled to the non-threaded section 6 to avoid the problem of failure of the sealing ring 8 to be sealed by the threaded section 4.

[0049] The specific sealing structure is as follows: for the liquid inlet joint 2, the sealing ring 8 on the liquid inlet joint 2 can be specifically pressed between the circumferential outer wall of the non-threaded section 6 of the liquid inlet joint 2 and the inner wall of the liquid inlet port 12; for the liquid outlet joint 3, the sealing ring 8 on the liquid outlet joint 3 can be specifically pressed between the circumferential outer wall of the non-threaded section 6 of the liquid outlet joint 3 and the inner wall of the liquid outlet port 13.

[0050] Of course, in other embodiments, a fixing ring may also be used to compress the sealing ring. For example, the sealing ring on the liquid inlet joint may be specifically compressed between the fixing ring on the liquid inlet joint and the side frame of the liquid cooling plate body; for another example, the sealing ring on the liquid outlet joint may be specifically compressed between the fixing ring on the liquid outlet joint and the side frame of the liquid cooling plate body.

[0051] Optionally, the liquid inlet 12 and the liquid outlet 13 are arranged on the same side of the liquid cooling plate body 1. In actual use, it is more convenient and quick to disassemble and assemble the liquid inlet connector 2 and the liquid outlet connector 3.

[0052] Optionally, the openings of the liquid inlet 12 and the liquid outlet 13 are arranged 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 themselves are arranged flush with the side frame of the liquid cooling plate body 1, and will not protrude from the side frame of the liquid cooling plate body 1, which is not easy to cause deformation of the liquid inlet 12 and the liquid outlet 13 themselves, and can effectively enhance the structural strength of the liquid inlet 12 and the liquid outlet 13 themselves.

[0053] Optionally, a main rib 14 is provided in the liquid cooling plate body 1, and the main rib 14 is extended along the length direction of the liquid cooling plate body 1; the main rib 14 divides the liquid cooling chamber 11 into a liquid inlet channel connected to the liquid inlet 12 and a liquid outlet channel connected to the liquid outlet 13, and the liquid inlet channel and the liquid outlet channel are connected. In this specific embodiment, the main rib 14 is specifically provided in the liquid cooling plate body 1 to specifically divide the liquid cooling chamber 11 into a liquid inlet channel and a liquid outlet channel, specifically to guide the flow direction of the coolant and better cool the battery.

[0054] Optionally, the overall shape of the liquid cooling chamber 11 is U-shaped. In this way, the structure is simple, the manufacturing is convenient, and the manufacturing difficulty is reduced.

[0055] Optionally, a plurality of ribs 15 are provided in the liquid cooling plate body 1, and the ribs 15 are extended along the length direction of the liquid cooling plate body 1; at least one rib 15 is provided in the liquid inlet channel; and / or at least one rib 15 is provided in the liquid outlet channel. In this specific embodiment, by providing ribs 15 in the liquid inlet channel and ribs 15 in the liquid outlet channel, the coolant can be dispersed in the liquid inlet channel and the liquid outlet channel, so that the coolant flows in a larger area, thereby achieving cooling of a larger area to improve the cooling effect.

[0056] 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 extending direction of the reinforcing ribs 16 is arranged obliquely with respect to the length direction of the liquid cooling plate body 1. In this specific embodiment, by providing reinforcing ribs 16 in the liquid inlet channel and the liquid outlet channel, the structural strength of the liquid cooling plate body 1 is enhanced and the service life is extended.

[0057] Optionally, the reinforcing ribs 16 in the liquid inlet channel and the liquid outlet channel are symmetrically arranged one by one with respect to the main ribs 14, which has a simple structure, is easy to manufacture, and reduces the manufacturing difficulty.

[0058] The embodiment of the utility model also discloses a battery pack, including the above-mentioned liquid cooling plate structure. The battery pack also specifically 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. When performing subsequent maintenance and replacement, they can be directly removed and replaced without removing the entire battery pack and replacing a new liquid cooling plate. The operation is very convenient and quick, and maintenance costs can be saved. In addition, the liquid inlet connector 2 and the liquid outlet connector 3 are designed separately, and can be directly processed separately in the future, which can also reduce the manufacturing difficulty and improve the manufacturing efficiency.

[0059] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A liquid cooling plate structure, characterized in that: include: A liquid cooling plate body (1) is 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), which is detachably arranged on the liquid inlet (12); A liquid outlet connector (3) is 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 member (7).

2. A liquid cooling plate structure according to claim 1, characterized in that: The liquid inlet joint (2) is inserted into the liquid inlet (12) and is threadedly connected to the wall surface of the liquid inlet (12), and the liquid outlet joint (3) is inserted into the liquid outlet (13) and is threadedly connected to the wall surface of the liquid outlet (13).

3. A liquid cooling plate structure according to claim 2, characterized in that: The liquid inlet joint (2) and the liquid outlet joint (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 joint (2) and the liquid outlet joint (3) is a non-threaded section (6) for assembling the sealing ring (8) thereof.

4. The liquid cooling plate structure according to claim 1, characterized in that: The liquid inlet (12) and the liquid outlet (13) are arranged on the same side of the liquid cooling plate body (1).

5. A liquid cooling plate structure according to any one of claims 1 to 4, characterized in that: The openings of the liquid inlet (12) and the liquid outlet (13) are arranged flush with the side frame of the liquid cooling plate body (1).

6. A liquid cooling plate structure according to any one of claims 1 to 4, characterized in that: A main rib (14) is arranged inside the liquid cooling plate body (1), and the main rib (14) is extended along the length direction of the liquid cooling plate body (1); The main rib (14) divides the liquid cooling chamber (11) into a liquid inlet channel connected to the liquid inlet (12) and a liquid outlet channel connected to the liquid outlet (13), and the liquid inlet channel and the liquid outlet channel are interconnected; The overall shape of the liquid cooling chamber (11) is U-shaped.

7. A liquid cooling plate structure according to claim 6, characterized in that: A plurality of ribs (15) are arranged in the liquid cooling plate body (1), and the ribs (15) are extended along the length direction of the liquid cooling plate body (1); At least one dividing rib (15) is arranged in the liquid inlet channel; and / or at least one dividing rib (15) is arranged in the liquid outlet channel.

8. The liquid cooling plate structure according to claim 6, characterized in that: The cavity walls of the liquid inlet channel and the liquid outlet channel are provided with a plurality of reinforcing ribs (16), and the extending direction of the reinforcing ribs (16) is arranged obliquely with respect to the length direction of the liquid cooling plate body (1); The reinforcing ribs (16) in the liquid inlet channel and the liquid outlet channel are respectively arranged symmetrically with respect to the main ribs (14).

9. The liquid cooling plate structure according to claim 1, characterized in that: The liquid outlet joint (3) and the liquid inlet joint (2) are both provided with a check piece (7), and the check piece (7) is a check rubber ball; The check rubber ball in the liquid outlet joint (3) is arranged on a side of the liquid outlet joint (3) close to the liquid outlet (13); The non-return rubber ball in the liquid inlet joint (2) is arranged on one side of the liquid inlet joint (2) close to the liquid inlet port (12).

10. A battery pack, characterized in that: It comprises a liquid cooling plate structure according to any one of claims 1-9.

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