Liquid cooling plate structure of battery module

Abstract

The utility model discloses a liquid cooling plate structure of a battery module, and belongs to the field of heat dissipation of battery modules. The liquid cooling plate structure of the battery module comprises a storage shell, a bottom liquid cooling plate is arranged at the lower end of the storage shell, grooves are formed in the two sides of the interior of the storage shell, the grooves are sunken in the storage shell, the number of the grooves is two, and side face liquid cooling plates are arranged in the two grooves. The utility model solves the problems that the existing liquid cooling plate is positioned at the bottom of the battery module, the main heat dissipation function is conducted from the bottom of a battery cell to the whole battery cell, the heat dissipation area is smaller, the heat dissipation efficiency is lower, and the battery module cannot be used in a high-temperature environment for a long time. The bottom of the battery module is attached by the bottom liquid cooling plate and is cooled, and meanwhile, the side liquid cooling plate is used for cooling, so that the cooling area is increased, and the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation of battery modules, in particular to a liquid cooling plate structure of a battery module. Background Art

[0002] With the rapid development of new energy electric vehicles, the battery's charge and discharge life and safety performance have received more and more attention. At present, the battery thermal management system mainly uses water cooling, which has higher heat transfer efficiency and more uniform temperature control. In the liquid cooling PACK, a heat-conducting medium is filled between the liquid cooling plate and the battery. An elastic device is required at the bottom of the liquid cooling plate to support the liquid cooling plate, ensure that the battery, heat-conducting medium and liquid cooling plate are closely fitted, and the heat between the three is fully transferred. In addition, the elastic device also plays a buffering role to prevent the liquid cooling plate from being deformed after being subjected to vibration shock;

[0003] In existing conventional PACK packages, the liquid cooling plate is placed at the bottom of the battery module, which can only dissipate heat or heat the bottom of the battery module, thereby transmitting the heat to the battery cell to cool down or heat up. The contact area between the bottom of the battery cell and the liquid cooling plate determines the heat dissipation or heating efficiency.

[0004] Figure 1 The conventional technical solution is shown: the liquid cooling plate is at the bottom of the battery module, and the main heat dissipation function is transmitted from the bottom of the battery cell to the entire battery cell. The heat dissipation area is small, the heat dissipation efficiency is slow, and it cannot cope with long-term use in high-temperature environments. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid cooling plate structure for a battery module, by which two side liquid cooling plates are vertically attached to the battery module, so that the bottom of the battery module is attached and dissipated by the bottom liquid cooling plate while the side liquid cooling plates are also used to dissipate heat, thereby increasing the heat dissipation area and thus improving the heat dissipation efficiency, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid cooling plate structure of a battery module, comprising a storage shell, a bottom liquid cooling plate is arranged at the lower end of the storage shell, grooves are arranged on both sides of the interior of the storage shell, and the grooves are recessed in the interior of the storage shell, two grooves are arranged, and side liquid cooling plates are arranged in the interiors of the two grooves.

[0007] Preferably, the internal array of the storage shell is provided with a battery module, one side of the side liquid cooling plate is provided with a first fitting surface, and the other side of the side liquid cooling plate is provided with a second fitting surface.

[0008] Preferably, a fourth connecting pipe is provided at the front end of one side of the two side liquid cooling plates, a third connecting pipe is provided at the rear end of one side of the two side liquid cooling plates, and the third connecting pipe and the fourth connecting pipe are both sealed and connected to the side liquid cooling plates.

[0009] Preferably, the interior of the groove is connected to the external sliding groove of the side liquid cooling plate.

[0010] Preferably, a first connecting pipe for pipe connection is provided on one side of the upper end of the bottom liquid cooling plate, and a second connecting pipe for transmission is provided on one side of the first connecting pipe.

[0011] Preferably, the lower ends of the first connecting pipe and the second connecting pipe are sealedly connected to one side of the upper end of the bottom liquid cooling plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The side liquid cooling plates of the utility model are vertically installed in the grooves on both sides of the interior of the storage shell. The two side liquid cooling plates are vertical and fit the sides of the battery module. While one heat-conducting and heat-dissipating medium is transmitted in the bottom liquid cooling plate, another heat-conducting medium is transmitted in the side liquid cooling plates. The combination of the side liquid cooling plates and the bottom liquid cooling plates can contact the bottom and sides of the battery module at the same time, thereby increasing the contact area and thus improving the heat dissipation capacity. The improvement in the heat dissipation capacity enables the battery module to cope with long-term use in a high-temperature environment. On the other hand, the two side liquid cooling plates are embedded in the interior of the storage shell, and the storage shell can be supported by the side liquid cooling plates to prevent the storage shell from being deformed due to collision, thereby preventing damage to the battery module caused by deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a conventional battery module liquid cooling plate structure;

[0015] Figure 2 It is a three-dimensional diagram of the overall external structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0017] Figure 4 It is a schematic diagram of the flow trajectory of the internal heat dissipation structure of the side liquid cooling plate of the present invention.

[0018] In the figure: 1. Storage shell; 2. Battery module; 3. Bottom liquid cooling plate; 4. First connecting pipe; 5. Second connecting pipe; 6. Side liquid cooling plate; 7. Third connecting pipe; 8. First fitting surface; 9. Second fitting surface; 10. Groove; 11. Fourth connecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to solve the problem that the existing liquid cooling plate is placed at the bottom of the battery module, which can only dissipate heat or heat the bottom of the battery module and then conduct it to the battery cell to cool down or heat up, and the contact area between the bottom of the battery cell and the liquid cooling plate determines the heat dissipation or heating efficiency, this embodiment provides the following technical solutions:

[0021] A liquid cooling plate structure for a battery module includes a storage shell 1, a bottom liquid cooling plate 3 is arranged at the lower end of the storage shell 1, a heat conductive metal is arranged between the bottom liquid cooling plate 3 and the storage shell 1, and the heat generated by the battery module 2 is transferred to the bottom liquid cooling plate 3 through heat conduction between the storage shell 1 and the heat conductive metal. Figure 2 As shown, heat can be discharged by transporting the liquid to the bottom liquid cooling plate 3;

[0022] In this embodiment, a first connecting pipe 4 for pipe connection is provided on one side of the upper end of the bottom liquid cooling plate 3, and a second connecting pipe 5 for transmission is provided on one side of the first connecting pipe 4. Figure 2 As shown, the lower ends of the first connecting pipe 4 and the second connecting pipe 5 are sealed and connected to one side of the upper end of the bottom liquid cooling plate 3, and the heat dissipation liquid medium is transported to the inside of the bottom liquid cooling plate 3 through the first connecting pipe 4, and is discharged from the position of the second connecting pipe 5 after transmission;

[0023] In this embodiment, grooves 10 are provided on both sides of the interior of the storage shell 1, and the grooves 10 are recessed inside the storage shell 1. Figure 3 As shown, the concave receiving housing 1 can facilitate the vertical installation of the side liquid cooling plate 6;

[0024] In this embodiment, two grooves 10 are provided, and a side liquid cooling plate 6 is provided inside each of the two grooves 10. The side liquid cooling plate 6 can be vertically slidably installed inside the groove 10, such as Figure 3 and Figure 4 As shown, the inside of the groove 10 is connected to the external sliding slot of the side liquid cooling plate 6, and the side liquid cooling plate 6 is vertically installed and can be attached to one side of the battery module 2, and the heat is transferred through the attachment, and the heat is dissipated through the transfer;

[0025] In this embodiment, the internal array of the storage housing 1 is provided with battery modules 2, such as Figure 3 and Figure 4As shown, a first bonding surface 8 is provided on one side of the side liquid cooling plate 6, and a second bonding surface 9 is provided on the other side of the side liquid cooling plate 6. When the side liquid cooling plate 6 is installed vertically, the first bonding surface 8 and the second bonding surface 9 are bonded to the battery modules 2 at different positions;

[0026] In this embodiment, if Figure 3 and Figure 4 As shown, a fourth connecting pipe 11 is provided at the front end of one side of the two side liquid cooling plates 6, and a third connecting pipe 7 is provided at the rear end of one side of the two side liquid cooling plates 6, and the third connecting pipe 7 and the fourth connecting pipe 11 are both sealedly connected to the side liquid cooling plates 6. Through the sealed connection, the pipe of the external transmission medium is transported to the inside of the side liquid cooling plate 6, so as to complete the heat dissipation of the battery module 2 from the side.

[0027] Working principle: When using the liquid cooling plate structure and dissipating heat to the battery module 2, the heat of the battery module 2 contacts the bottom liquid cooling plate 3 after being transmitted through the storage shell 1 and the heat-conducting metal. The two pipes of one of the external conveying devices are respectively connected to the first connecting pipe 4 and the second connecting pipe 5. The liquid conveyed to the bottom of the bottom liquid cooling plate 3 will contact the bottom liquid cooling plate 3 at the lower end of the storage shell 1, and the heat dissipation of the bottom end of the battery module 2 is completed through the contact of the liquid. The two side liquid cooling plates 6 are respectively inserted into the groove 10, inserted into and contact the side of the battery module 2, and the two pipes of the other external conveying device are respectively connected to the third connecting pipe 7 and the fourth connecting pipe 11. The heat dissipation medium is transferred to the side liquid cooling plate 6 through the conveying device, and is transported and dissipated on the side of the battery module 2.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling plate structure for a battery module, comprising a storage shell (1), wherein a bottom liquid cooling plate (3) is arranged at the lower end of the storage shell (1), characterized in that: Grooves (10) are provided on both sides of the storage shell (1), and the grooves (10) are recessed in the storage shell (1). Two grooves (10) are provided, and side liquid cooling plates (6) are provided in the two grooves (10).

2. The liquid cooling plate structure of a battery module according to claim 1, characterized in that: The internal array of the storage shell (1) is provided with a battery module (2), one side of the side liquid cooling plate (6) is provided with a first fitting surface (8), and the other side of the side liquid cooling plate (6) is provided with a second fitting surface (9).

3. The liquid cooling plate structure of a battery module according to claim 2, characterized in that: A fourth connecting pipe (11) is provided at the front end of one side of the two side liquid cooling plates (6), and a third connecting pipe (7) is provided at the rear end of one side of the two side liquid cooling plates (6), and both the third connecting pipe (7) and the fourth connecting pipe (11) are sealed and connected to the side liquid cooling plates (6).

4. The liquid cooling plate structure of a battery module according to claim 1, characterized in that: The interior of the groove (10) is connected to the external sliding groove of the side liquid cooling plate (6).

5. The liquid cooling plate structure of a battery module according to claim 1, characterized in that: A first connecting pipe (4) for pipe connection is provided on one side of the upper end of the bottom liquid cooling plate (3), and a second connecting pipe (5) for transmission is provided on one side of the first connecting pipe (4).

6. The liquid cooling plate structure of a battery module according to claim 5, characterized in that: The lower ends of the first connecting pipe (4) and the second connecting pipe (5) are sealedly connected to one side of the upper end of the bottom liquid cooling plate (3).

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