CN216054912U

CN216054912U - Battery module thermal management system

Info

Publication number: CN216054912U
Application number: CN202122736802.7U
Authority: CN
Inventors: 葛曹鹏; 徐福建; 王皆佳; 孙旭; 徐大伟; 朱杰; 任鑫焱; 陶金忠
Original assignee: Jiangsu Vocational and Technical Shipping College
Current assignee: Jiangsu Vocational and Technical Shipping College
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-15
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a battery module heat management system which comprises a battery module, radiating fins, a liquid cooling plate, heat pipes, runners, an outlet and inlets, wherein the liquid cooling plate is arranged at the bottom of the battery module, two groups of runners are arranged on the inner side of the liquid cooling plate, the runners are S-shaped runners, the outlet and the inlet are respectively arranged on one side of each runner, the two groups of inlets are arranged in the middle of the liquid cooling plate, the outlet is arranged on one side far away from the inlet, the evaporation end of each heat pipe is connected to the inside of the liquid cooling plate, and the condensation end of each heat pipe is inserted into the radiating fins. Has the advantages that: the temperature-equalizing device has the advantages of smaller temperature difference, better temperature equalization and more reasonable temperature distribution.

Description

Battery module thermal management system

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module thermal management system.

Background

The power battery is used as a power source of the electric automobile, and the safety and the service life of the power battery are particularly important for the electric automobile. Since the temperature has a decisive influence on the performance and safety of the battery, and the main purpose of the thermal management system of the power battery is to provide the power battery with proper working temperature conditions, an effective thermal management system of the battery needs to be configured for the power battery system. The lithium ion battery generates heat in the internal electrochemical process during charging and discharging, and the temperature distribution of the battery is uneven, so that local overheating is easily caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a battery module heat management system which has the advantages of smaller temperature difference, better temperature uniformity and more reasonable temperature distribution, and further solves the problems that the internal electrochemical process of a lithium ion battery is accompanied by heat generation, the temperature distribution of the battery is uneven and local overheating is easily caused during charging and discharging.

(II) technical scheme

In order to realize the advantage of high safety, the utility model adopts the following specific technical scheme:

the utility model provides a battery module thermal management system, includes battery module, radiating fin, liquid cooling board, heat pipe, runner, export, import, the liquid cooling board sets up in battery module 'S bottom, and is two sets of the runner sets up the inboard at the liquid cooling board, the runner is the S-shaped runner, is provided with export and import respectively in one side of runner, and is two sets of the import all sets up the middle part at the liquid cooling board, the export sets up in the one side of keeping away from the import, the inside at the liquid cooling board is connected to the evaporating end of heat pipe, and the condensing end of heat pipe is inserted in radiating fin' S inside.

Further, the battery module is composed of lithium iron phosphate battery cells with the size of 84 blocks being 227mm multiplied by 161mm multiplied by 7.2 mm.

Further, every group be provided with 6 battery module groups between the liquid cooling board, the liquid cooling board is the cold board of aluminum alloy material, and its thickness dimension is 10mm, the size of liquid cooling board is 327mm x 460mm x 10 mm.

Furthermore, the number of the radiating fins is two, the number of each group of radiating fins is 20, and the thickness dimension of the radiating fins is 2 mm.

Furthermore, an evaporation cavity and a liquid absorption core are arranged on the inner wall of the heat pipe, the pipe shell material of the heat pipe is copper, the outer diameter of the heat pipe is 8mm, the mesh number of the liquid absorption core is 230, the number of layers is 10, and the thickness of the mesh is 1.1 mm.

Further, the pipe diameter of the runner is 8mm, and the distance between adjacent runners is designed to be 40 mm.

Further, the outlet and the inlet are both arranged on the same side of the liquid cooling plate.

(III) advantageous effects

Compared with the prior art, the utility model provides a battery module thermal management system, which has the following beneficial effects: the lithium ion battery has the advantages of smaller temperature difference, better temperature uniformity and more reasonable temperature distribution, and further solves the problems that the internal electrochemical process of the lithium ion battery is accompanied with heat generation during charging and discharging, the temperature distribution of the battery is uneven, and local overheating is easily caused.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a schematic view of the structure of the liquid-cooled panel 3 of the present invention.

In the figure: battery module 1, radiating fin 2, liquid cooling plate 3, heat pipe 4, runner 5, export 6, import 7.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a battery module thermal management system is provided.

Referring to the drawings and the detailed description, as shown in fig. 1-3, a battery module thermal management system according to an embodiment of the present invention includes a battery module 1, heat dissipation fins 2, a liquid cooling plate 3, heat pipes 4, flow channels 5, an outlet 6, and an inlet 7, where the liquid cooling plate 3 is disposed at the bottom of the battery module 1, two sets of the flow channels 5 are disposed at the inner side of the liquid cooling plate 3, the flow channels 5 are S-shaped flow channels, the outlet 6 and the inlet 7 are respectively disposed at one side of the flow channels 5, the two sets of the inlet 7 are both disposed at the middle portion of the liquid cooling plate 3, the outlet 6 is disposed at one side far from the inlet 7, an evaporation end of the heat pipe 4 is connected to the inside of the liquid cooling plate 3, and a condensation end of the heat pipe 4 is inserted into the heat dissipation fins 2.

In one embodiment, the battery module 1 consists of lithium iron phosphate battery cells with 84 block sizes of 227mm × 161mm × 7.2 mm. The entire battery module 1 is first arranged above one liquid-cooled plate 3 and then arranged from bottom to top in the thickness direction of the battery.

In one embodiment, 6 sets of battery modules 1 are disposed between each set of the liquid cooling plates 3, and there are 4 liquid cooling plates, the liquid cooling plates 3 are aluminum alloy cold plates with a thickness dimension of 10mm, and the liquid cooling plates 3 have a dimension of 327mm × 460mm × 10 mm.

In one embodiment, the number of the heat dissipation fins 2 is two, and the number of the heat dissipation fins 2 in each group is 20, and the thickness dimension is 2 mm. The heat radiating fins 2 are respectively and correspondingly arranged on two sides of the battery module 1 and connected with the liquid cooling plate 3 through the heat pipe 4, so that the temperature of the battery module 1 can be conveniently adjusted.

In one embodiment, an evaporation cavity and a wick are arranged on the inner wall of the heat pipe 4, the pipe shell material of the heat pipe 4 is copper, the outer diameter of the heat pipe 4 is 8mm, the mesh number of the wick is 230, the number of layers is 10, and the thickness of the mesh is 1.1 mm.

In one embodiment, the diameter of the flow channel 5 is 8mm, and the distance between adjacent flow channels is 40 mm.

In one embodiment, the outlet 6 and the inlet 7 are both arranged on the same side of the liquid-cooled plate 3. Two import 7 positions are adjacent, and export 6 all is provided with the solenoid valve in the opposite side of import 7, at the one end of export 6 import 7, controls the flow size of import 7 with export 6 through the solenoid valve, has made things convenient for to carry out temperature adjustment to liquid cooling plate 3.

The working principle is as follows: constitute a battery module 1 with lithium iron phosphate battery monomer, place a liquid cooling board 3 in battery module 1 bottom, then, in the thickness direction, from up 6 battery modules 1 of every down, the liquid cooling board 3 of one is placed on every layer, insert 4 heat pipes 4 in the middle of every liquid cooling board 3, battery module 1 about both sides respectively install 20 fins that 2mm is thick at 4 condensation zone departments of heat pipe, the air that lets in certain velocity of flow carries out the convection heat transfer, and then solved lithium ion battery inside electrochemical process during charge-discharge has been accompanied the heat production, battery temperature distribution is inhomogeneous, easily lead to local overheated problem.

In summary, with the above technical solutions of the present invention, unless explicitly specified or limited otherwise, the terms "mounting," "setting," "connecting," "fixing," "screwing" and the like in the present invention should be broadly construed, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A battery module thermal management system, comprising: including battery module (1), radiating fin (2), liquid cooling plate (3), heat pipe (4), runner (5), export (6), import (7), liquid cooling plate (3) set up in the bottom of battery module (1), and is two sets of runner (5) set up the inboard at liquid cooling plate (3), runner (5) are the S-shaped runner, are provided with export (6) and import (7) respectively in one side of runner (5), and are two sets of import (7) all set up the middle part at liquid cooling plate (3), export (6) set up in the one side of keeping away from import (7), the evaporation end of heat pipe (4) is connected in the inside of liquid cooling plate (3), and the condensation end of heat pipe (4) is inserted in the inside of radiating fin (2).

2. The battery module thermal management system of claim 1, wherein: the battery module (1) is composed of lithium iron phosphate battery monomers with the block size of 227mm multiplied by 161mm multiplied by 7.2 mm.

3. The battery module thermal management system of claim 1, wherein: every group be provided with 6 battery module (1) of group between liquid cold plate (3), liquid cold plate (3) are the aluminum alloy material cold drawing, and its thickness dimension is 10mm, the size of liquid cold plate (3) is 327mm x 460mm x 10 mm.

4. The battery module thermal management system of claim 1, wherein: the number of radiating fins (2) is two sets of, and the number of every group radiating fin (2) is 20, and its thickness dimension is 2 mm.

5. The battery module thermal management system of claim 1, wherein: an evaporation cavity and a liquid absorption core are arranged on the inner wall of the heat pipe (4), the pipe shell material of the heat pipe (4) is copper, the outer diameter of the heat pipe (4) is 8mm, the mesh number of the liquid absorption core is 230, the number of layers is 10, and the thickness of the net is 1.1 mm.

6. The battery module thermal management system of claim 1, wherein: the pipe diameter of the runner (5) is 8mm, and the distance between adjacent runners is designed to be 40 mm.

7. The battery module thermal management system of claim 1, wherein: the outlet (6) and the inlet (7) are both arranged on the same side of the liquid cooling plate (3).