Liquid cooling plate structure for uniform heat dissipation of battery pack

Abstract

The utility model relates to the technical field of battery pack cooling, in particular to a liquid cooling plate structure for uniform heat dissipation of a battery pack, which comprises a bottom plate body, a first cooling mechanism is arranged in the bottom plate body, a top plate body is connected to the top end of the bottom plate body in a buckling manner, and a second cooling mechanism is inserted into the top plate body in an embedded manner. A plurality of battery placing grooves are formed in the top plate body, inserting grooves are formed in the outer sides of the battery placing grooves, and the inserting grooves are arranged in a snake shape along the outer sides of the battery placing grooves. According to the battery pack liquid cooling heat dissipation structure, through a cooling cavity formed in a second cooling mechanism, when cooling liquid enters one end of the cooling cavity through a second cooling liquid inlet and flows out of the other end of the cooling cavity, due to the fact that an S-shaped cooling plate makes contact with the outer wall of a battery, the rapid heat dissipation effect of the outer wall of the battery is achieved; and the S-shaped cooling plates arranged on the outer sides of the battery placement grooves are matched, so that synchronous and rapid heat dissipation of the bottom and the outer wall of the battery pack can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack cooling technology field, concretely is a liquid cooling plate structure for battery pack even heat dissipation. BACKGROUND

[0002] For lithium ion battery system, want to carry out high -power constant power output, and the heat of the cell must be cooled by air cooling or liquid cooling. The current mainstream single heat dissipation mode air cooling, liquid cooling cannot quickly transfer the heat of the thermal runaway cell to the outside of the package. Liquid cooling is the mainstream cooling method on the market, which is installed at the bottom of the battery system to remove the heat of the battery. It cannot efficiently achieve the target requirement, and the temperature difference between the rear-end cell and the front-end cell affects the battery performance. At present, there is no good battery pack liquid cooling structure to solve this problem.

[0003] As disclosed in the authorized announcement No. CN218896704U, a liquid cooling plate for battery pack heat dissipation, comprising a lower plate body, a cold liquid cavity groove is provided at the center of the upper surface thereof, a plurality of convex bodies are provided at the groove bottom of the cold liquid cavity groove to form a cold liquid flow channel in the cold liquid cavity groove; an upper plate body is sealed and connected with the lower surface of the upper plate body to cover the cold liquid cavity groove, the upper surface is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the cold liquid cavity groove; and at least two adapter rods are arranged on the upper surface of the upper plate body, and each adapter rod is parallel to each other and connected with the external battery pack. The utility model has the advantages of simple structure, which can effectively dissipate heat of the battery pack and improve the firmness. However, the utility model can only quickly dissipate heat at the bottom of the battery in unit time, lacks quick heat dissipation measures for the outer wall of the battery, and has certain limitations. Therefore, we propose a liquid cooling plate structure for battery pack even heat dissipation, which solves the problem of insufficient heat dissipation efficiency of the utility model, improves the heat dissipation efficiency of the utility model, and improves the use durability of the battery, thereby ensuring the use performance of the battery. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a liquid cooling plate structure for battery pack even heat dissipation to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A liquid cooling plate structure for battery pack even heat dissipation, comprising a bottom plate body, a first cooling mechanism is arranged inside the bottom plate body, a top plate body is connected with the top end of the bottom plate body in a buckle type, a second cooling mechanism is inserted into the top plate body in an embedded type, a plurality of battery placing grooves are arranged on the top plate body, a plug-in groove is formed on the outside of the battery placing groove, and the plug-in groove is arranged in a serpentine shape along the outside of the battery placing groove.

[0007] Preferably, the first cooling mechanism comprises a first cooling liquid inlet, and the output end of the first cooling liquid inlet is fixedly connected with an S-shaped cooling pipe, the S-shaped cooling pipe is fixedly welded to the top surface of the bottom plate body, and the output end of the S-shaped cooling pipe is fixedly connected to a first cooling liquid outlet.

[0008] Preferably, the second cooling mechanism comprises a serpentine cooling plate, and the serpentine cooling plate is internally provided with a cooling cavity, and the cooling cavity is internally provided with a plurality of shunt protrusions.

[0009] Preferably, the cooling cavity is communicatively provided with a second cooling liquid inlet at one end and a second cooling liquid outlet at the other end.

[0010] Preferably, the serpentine cooling plate is provided with a plug-in plate corresponding to the plug-in slot at the bottom end, the plug-in plate is provided with a first retaining screw hole, the top plate body is provided with a second retaining screw hole corresponding to the first retaining screw hole at both sides, and the first retaining screw hole and the second retaining screw hole are matched with a retaining bolt.

[0011] Preferably, the serpentine cooling plate is in contact with the outer wall of the battery, the bottom plate body, the top plate body and the serpentine cooling plate are all made of aluminum alloy material, the S-shaped cooling pipe is made of copper material, and the bottom end of the battery placing groove is in contact with the S-shaped cooling pipe.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The liquid cooling plate structure for uniformly cooling the battery pack, through the cooling cavity of the second cooling mechanism, when the cooling liquid enters one end of the cooling cavity through the second cooling liquid inlet and flows out from the other end of the cooling cavity, the serpentine cooling plate is in contact with the outer wall of the battery, thereby realizing the rapid heat dissipation effect of the outer wall of the battery, and the battery pack liquid cooling heat dissipation structure is provided with the first heat dissipation mechanism of the bottom plate body, and the serpentine cooling plate is arranged outside the battery placing groove, so that the battery pack can realize synchronous rapid heat dissipation of the bottom and the outer wall, thereby avoiding the performance decline problem caused by the untimely cooling of the battery, and prolonging the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a local disassembly structure schematic view of the utility model Figure One ;

[0016] Figure 3 It is a local disassembly structure schematic view of the utility model Figure Two ;

[0017] Figure 4 It is a serpentine cooling plate internal local structure schematic view of the utility model.

[0018] In the figure: 100, bottom plate body; 101, top plate body; 102, battery placing groove; 103, plug-in groove; 104, battery; 200, first cooling liquid inlet; 201, S-shaped cooling pipe; 202, first cooling liquid outlet; 300, serpentine cooling plate; 301, cooling cavity; 302, shunt protrusion; 303, second cooling liquid inlet; 304, second cooling liquid outlet; 305, plug-in plate; 306, first retaining screw hole; 307, second retaining screw hole; 308, retaining bolt. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 A technical solution provided by the utility model is shown in the figure:

[0021] A liquid cooling plate structure for uniform heat dissipation of a battery pack, comprising a bottom plate body 100, wherein the bottom plate body 100 is internally provided with a first cooling mechanism, the top end of the bottom plate body 100 is buckle-connected with a top plate body 101, the top plate body 101 is embeddedly plugged with a second cooling mechanism, the top plate body 101 is provided with a plurality of battery placing grooves 102, the outer side of the battery placing groove 102 is provided with a plug-in groove 103, and the plug-in groove 103 is arranged in a serpentine shape along the outer side of the battery placing groove 102.

[0022] In the embodiment, preferably, the first cooling mechanism comprises a first cooling liquid inlet 200, the output end of the first cooling liquid inlet 200 is fixedly connected with an S-shaped cooling pipe 201, the S-shaped cooling pipe 201 is fixedly welded to the top surface of the bottom plate body 100, and the output end of the S-shaped cooling pipe 201 is fixedly connected to a first cooling liquid outlet 202.

[0023] In the embodiment, preferably, the second cooling mechanism comprises a serpentine cooling plate 300, the serpentine cooling plate 300 is internally provided with a cooling cavity 301, and the cooling cavity 301 is internally provided with a plurality of shunt protrusions 302.

[0024] In the embodiment, preferably, the cooling cavity 301 is communicatively provided at one end with a second cooling liquid inlet 303 and at the other end with a second cooling liquid outlet 304.

[0025] In this embodiment, preferably, the bottom end of the serpentine cooling plate 300 is provided with a plug-in plate 305 corresponding to the plug-in slot 103, the plug-in plate 305 is provided with a first retaining screw hole 306, the top plate body 101 is provided with a second retaining screw hole 307 corresponding to the first retaining screw hole 306 on both sides, and the first retaining screw hole 306 and the second retaining screw hole 307 are provided with a retaining screw 308 in a matched manner.

[0026] In this embodiment, preferably, the serpentine cooling plate 300 is in contact with the outer wall of the battery 104, the bottom plate body 100, the top plate body 101 and the serpentine cooling plate 300 are made of aluminum alloy material, the S-shaped cooling pipe 201 is made of copper material, and the bottom end of the battery placing slot 102 is in contact with the S-shaped cooling pipe 201.

[0027] In use, the first retaining screw hole 306 corresponds to the second retaining screw hole 307, the retaining screw 308 is used to fix the serpentine cooling plate 300, and then the battery 104 is installed into the top plate body 101 through the battery placing slot 102. When the cooling liquid enters the S-shaped cooling pipe 201 through the first cooling liquid inlet 200 and is finally discharged through the first cooling liquid outlet 202, the bottom end of the battery placing slot 102 is in contact with the S-shaped cooling pipe 201, and the structure plate body is made of aluminum alloy material and has good heat conduction performance, so that the cooling liquid flowing in the S-shaped cooling pipe 201 can quickly cool the bottom of the battery 104. When the cooling liquid enters one end of the cooling cavity 301 through the second cooling liquid inlet 303 and flows out from the other end of the cooling cavity 301, the serpentine cooling plate 300 is in contact with the outer wall of the battery 104, thereby achieving the effect of quickly cooling the outer wall of the battery 104. The battery 104 package liquid cooling heat dissipation structure is provided with the first heat dissipation mechanism of the bottom plate body 100, and the serpentine cooling plate 300 is provided outside the battery placing slot 102, so that the battery 104 package can realize synchronous and rapid heat dissipation of the bottom and the outer wall, thereby avoiding the performance degradation problem caused by the slow cooling of the battery 104, and improving the service life of the battery 104.

[0028] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling plate structure for uniform heat dissipation of a battery pack, comprising a bottom plate body (100), characterized in that: The bottom plate body (100) is internally provided with a first cooling mechanism, the top plate body (101) is buckle-connected to the top end of the bottom plate body (100), and the top plate body (101) is embeddedly connected with a second cooling mechanism; The top plate body (101) is provided with a plurality of battery placing grooves (102), the outer side of the battery placing groove (102) is provided with a plug-in groove (103), and the plug-in groove (103) is arranged in a snakelike manner along the outer side of the battery placing groove (102).

2. The liquid cooling plate structure for uniform heat dissipation of a battery pack according to claim 1, characterized in that: The first cooling mechanism comprises a first cooling liquid inlet (200), the output end of the first cooling liquid inlet (200) is fixedly connected with an S-shaped cooling pipe (201), the S-shaped cooling pipe (201) is fixedly welded to the top surface of the bottom plate body (100), and the output end of the S-shaped cooling pipe (201) is fixedly connected with a first cooling liquid outlet (202).

3. The liquid cold plate structure for uniform heat dissipation of a battery pack of claim 1, wherein: The second cooling mechanism comprises a snakelike cooling plate (300), the snakelike cooling plate (300) is internally provided with a cooling cavity (301), and the cooling cavity (301) is internally provided with a plurality of shunt protrusions (302).

4. The liquid cold plate structure for uniform heat dissipation of a battery pack of claim 3, wherein: One end of the cooling cavity (301) is communicatively provided with a second cooling liquid inlet (303), and the other end is communicatively provided with a second cooling liquid outlet (304).

5. The liquid cold plate structure for uniform heat dissipation of a battery pack of claim 3, wherein: The bottom end of the snakelike cooling plate (300) is provided with a plug-in plate (305) corresponding to the plug-in groove (103), the plug-in plate (305) is provided with a first fixing screw hole (306), the two sides of the top plate body (101) are provided with a second fixing screw hole (307) corresponding to the first fixing screw hole (306) in one-to-one correspondence, and the first fixing screw hole (306) and the second fixing screw hole (307) are provided with a fixing bolt (308) in a matched mode.

6. The liquid cold plate structure for uniform heat dissipation of a battery pack of claim 3, wherein: The snakelike cooling plate (300) is in contact with the outer wall of the battery (104), the bottom plate body (100), the top plate body (101) and the snakelike cooling plate (300) are all made of aluminum alloy material, the S-shaped cooling pipe (201) is made of copper material, and the bottom end of the battery placing groove (102) is in contact with the S-shaped cooling pipe (201).

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