CN217214873U

CN217214873U - Lithium ion power battery module with middle-arranged cooling structure

Info

Publication number: CN217214873U
Application number: CN202123042307.2U
Authority: CN
Inventors: 尹德友; 张文莉
Original assignee: Sichuan Lingpai New Energy Technology Co ltd; Suzhou Lingpai New Energy Technology Co ltd; Hunan Lingpai New Energy Technology Co Ltd
Current assignee: Hunan Lingpai Energy Storage Technology Co ltd; Hunan Lingpai New Energy Research Institute Co ltd; Suzhou Lingpai New Energy Technology Co ltd; Hunan Lingpai New Energy Technology Co Ltd; Hengyang Lingpai New Energy Technology Co Ltd; Hunan Lead Power Dazhi Technology Inc
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-08-16
Anticipated expiration: 2031-12-06

Abstract

The utility model provides a lithium ion power battery module of putting in cooling structure, including battery module, cooling structure. The battery module includes 2 at least electric core groups, and every electric core group includes a plurality of electric cores, is equipped with the cooling plate that sets up along the vertical direction of battery module between 2 adjacent electric core groups, is equipped with the heat conduction fin between the adjacent electric core. And a cooling flow channel is arranged in the cooling plate, and the plurality of heat conduction fins and the cooling plate are connected to form a cooling structure of the battery module. In the cooling structure of the utility model, the cooling plate is arranged between 2 adjacent electric core groups along the vertical direction of the battery module, so that each electric core of each electric core group can be contacted with the cooling plate, and the cooling area of the contact between the cooling plate and the electric core is ensured; set up the heat conduction fin of being connected with the cooling plate between every electric core, can improve the intensity of battery module, can also be through heat conduction on the heat conduction fin is with electric core to the cooling plate on, further accelerated the cooling to electric core.

Description

Lithium ion power battery module with middle-arranged cooling structure

Technical Field

The utility model relates to a lithium ion power battery designs technical field, specifically is a lithium ion power battery module of putting in cooling structure.

Background

In the lithium ion power battery, constitute the battery module by a plurality of electric core, the battery module can work alone, also can constitute battery package back work by a plurality of module cluster/parallelly connected. Because consequently need design cooling structure of electric core heat production in the course of the work, present liquid cooling is one of the common electric core cooling methods in the battery module, places the liquid cooling board in battery module bottom usually, then puts electric core on the upper surface of liquid cooling board, cools off electric core through liquid cooling board and electric core heat transfer. The above cooling method has the following problems: only one surface of the liquid cooling plate can be in contact with the battery cell, the heat exchange area is limited, and the space utilization rate is not high.

In addition, generally fill heat conduction glue or insulating barrier between adjacent electric core, because heat conduction glue or insulating barrier and electric core are simple to stack, the intensity of the battery module of formation is not high, and weak to the mechanical constraint ability of electric core vibration and deformation, it also does not benefit to the heat of electric core horizontal direction and gives off.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an electric core's heat dissipation problem among the solution battery module has designed a simple structure, compactness, the reliability is high, cooling area is big, the lithium ion power battery module of putting among the cooling structure that cooling efficiency is high.

The technical scheme for realizing the purpose of the utility model is as follows: a lithium ion power battery module with a built-in cooling structure comprises a battery module and a cooling structure.

Wherein, the battery module includes 2 at least electric core groups, and every electric core group includes a plurality of electric cores, is equipped with the cooling plate that sets up along the vertical direction of battery module between 2 adjacent electric core groups, is equipped with heat conduction fin between the adjacent electric core.

And a cooling flow channel is arranged in the cooling plate, and the plurality of heat conduction fins and the cooling plate are connected to form a cooling structure of the battery module.

The utility model discloses a to cooling structure design in the lithium ion power battery module, set up the cooling plate between 2 adjacent electric core groups along the vertical direction of battery module, ensure that every electric core of every electric core group can both contact with the cooling plate, also can guarantee the area of contact between cooling plate and the electric core, ensured the cooling effect of battery module. Set up the heat conduction fin of being connected with the cooling plate between every electric core simultaneously, can improve the intensity of battery module on the one hand, on the other hand can be through heat conduction to the cooling plate on of heat conduction fin on with electric core, further accelerated the cooling to electric core.

Furthermore, the lithium ion power battery module further comprises a battery frame, wherein the battery frame is located outside the battery module and used for restraining the battery module and the cooling structure.

Further, the other end of each of the heat conductive fins is connected to the battery frame.

In an embodiment of the above cooling structure, the cooling structure further includes a heat conductive glue located between the battery cell and the heat conductive fin.

Furthermore, the battery cores are connected in series or in parallel through the bus to form a battery core group, and at least 2 battery core groups are connected in series or in parallel through the bus to form a battery module.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a to cooling structure design in the lithium ion power battery module, set up the cooling plate between 2 adjacent electric core groups along the vertical direction of battery module, ensure every electric core of every electric core group can both contact with the cooling plate, also can guarantee the area of contact between cooling plate and the electric core, ensured the cooling effect of battery module. Set up the heat conduction fin that the cooling plate is connected between every electric core simultaneously, can improve the intensity of battery module on the one hand, on the other hand can make partly heat of electric core transmit the heat conduction fin from the horizontal direction, transmits along heat conduction fin to the liquid cooling plate rather than being connected again, realizes giving off in the aspect of the heat production level of electric core, has strengthened its heat-sinking capability. The cooling structure is formed by connecting the plurality of heat conducting fins and the cooling plate, so that the lithium ion power battery module has the advantages of compactness, high reliability, large cooling area and high cooling efficiency.

2. Through set up heat-conducting glue between heat conduction fin and electric core, can play the restraint effect to electric core, reduce electric core and rock, also can accelerate the heat-conduction effect between electric core and the heat conduction fin.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below. It should be apparent that the drawings in the following description are only for the purpose of illustrating the embodiments of the present invention or the technical solutions in the prior art more clearly, and that other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a lithium ion power battery module disposed in a cooling structure according to an embodiment;

2, battery core; 3. a cooling plate; 4. a heat conductive fin; 5. a cooling flow channel; 6. a battery frame; and 7, heat-conducting glue.

Detailed Description

The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

This embodiment provides a lithium ion power battery module of putting among cooling structure, and lithium ion power battery module includes battery module, cooling structure.

As shown in fig. 1, the battery module includes at least 2 electric core groups, each of which includes a plurality of electric cells 2.

As shown in fig. 1, the cooling structure includes a cooling plate 3 and a plurality of heat conducting fins 4, the cooling plate 3 is located between 2 adjacent electric core groups and is arranged along the vertical direction of the battery module, and a cooling flow channel 5 is provided in the cooling plate 3. The heat conduction fins 4 are located between the adjacent electric cores 2, and the heat conduction fins 4 are connected with the cooling plate 3. The plurality of heat transfer fins 4 are connected to the cooling plate 3 to integrally form a cooling structure of the battery module. In this embodiment, the heat conducting fins 4 and the liquid cooling plate 3 are both made of aluminum material, and they are mechanically connected by welding to form a whole.

This embodiment is through cooling structure design in to lithium ion power battery module, with cooling plate 3 along the vertical direction setting of battery module between 2 adjacent electric core groups, ensure every electric core 2 of every electric core group can both contact with cooling plate 3, also can guarantee the area of contact between cooling plate 3 and electric core 2, ensured the cooling effect of battery module. Set up the heat conduction fin 4 of being connected with cooling plate 3 between every electric core 2 simultaneously, can improve the intensity of battery module on the one hand, on the other hand can be through heat conduction fin 4 with the heat conduction on the electric core 2 to cooling plate 3 on, further accelerated the cooling to electric core 2.

As a further optimization improvement of the above lithium ion power battery module, as shown in fig. 1, the lithium ion power battery module further includes a battery frame 6, and the battery frame 6 is located outside the battery module and used for constraining the battery module and the cooling structure.

More excellent, in order to improve the intensity and the stability of lithium ion power battery module, this embodiment still is connected every heat conduction fin 4's the other end with battery frame 5, and heat conduction fin 4, battery frame 5, cooling plate 3 three have all been injectd electric core group and every electric core 2's position this moment, can avoid because of the deformation of the lithium ion power battery module that electric core 2 vibrates and causes.

More preferably, in order to define the electric core 2, the friction between the electric core 2 and the heat conducting fins 4 caused by shaking is avoided, and the heat conduction efficiency between the electric core 2 and the heat conducting fins 4 is improved, as shown in fig. 1, the cooling structure further includes a heat conducting adhesive 7 located between the electric core 2 and the heat conducting fins 4.

As a further optimization improvement of the lithium ion power battery module, the battery cores 4 are connected in series or in parallel through the bus to form a battery core group, and at least 2 battery core groups are connected in series or in parallel through the bus to form the battery module. Connect earlier electric core 2 and form electric core group, connect electric core group again and form the battery module, can simplify and reduce the equipment degree of difficulty of battery module.

In this embodiment, as shown in fig. 1, there are 2 electric core groups in the battery module, each electric core group is a structure in which 6 electric cores 2 are connected in series, 1 electric core group is respectively disposed on two sides of the liquid cooling plate 3, the cooling flow channel 5 is communicated with an external radiator through an inlet and an outlet, and the cooling medium is water. When the battery module cools, the water flow of the lower temperature after cooling through the radiator flows into the cooling flow channel 5 of the liquid cooling plate 3, the two sides of the liquid cooling plate 3 and the heat conducting fins 4 exchange heat with the electric cores 2 simultaneously, the water temperature rises continuously in the heat exchange process, and the liquid is cooled.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a lithium ion power battery module of putting in cooling structure, includes battery module, cooling structure, its characterized in that: the battery module comprises at least 2 electric core groups, each electric core group comprises a plurality of electric cores, a cooling plate arranged along the vertical direction of the battery module is arranged between every two adjacent electric core groups, and a heat conduction fin is arranged between every two adjacent electric cores;

and a cooling flow channel is arranged in the cooling plate, and the heat conduction fins and the cooling plate are connected into a whole to form a cooling structure of the battery module.

2. The lithium-ion power battery module disposed in the cooling structure according to claim 1, wherein: the lithium ion power battery module further comprises a battery frame, wherein the battery frame is located outside the battery module and used for restraining the battery module and the cooling structure.

3. The lithium-ion power battery module disposed in the cooling structure according to claim 2, wherein: the other end of each heat conduction fin is also connected with the battery frame.

4. The lithium ion power battery module arranged in the cooling structure according to any one of claims 1 to 3, wherein: the cooling structure further comprises heat-conducting glue located between the battery cell and the heat-conducting fins.

5. The lithium-ion power battery module disposed in the cooling structure according to claim 1, wherein: the battery cores are connected in series or in parallel through buses to form the battery core groups, and at least 2 battery core groups are connected in series or in parallel through buses to form the battery module.