CN212517308U

CN212517308U - Liquid cooling device and battery module

Info

Publication number: CN212517308U
Application number: CN202021092288.7U
Authority: CN
Inventors: 郑伟伟; 黄梓健; 范光辉; 程志刚; 王华文; 王明旺
Original assignee: Sunwoda Huizhou Power New Energy Co Ltd
Current assignee: Sunwoda Huizhou Power New Energy Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-02-09
Anticipated expiration: 2030-06-12

Abstract

The disclosure relates to a liquid cooling device and a battery module, which comprise a temperature equalizing plate, an inlet channel, an outlet channel, and an inlet joint and an outlet joint which are respectively connected above the inlet channel and the outlet channel; the inlet channel and the outlet channel are connected to the temperature equalizing plate in parallel; the temperature equalizing plate is formed by connecting a plurality of pipelines in parallel. This openly equalizes the temperature of battery module through a plurality of pipelines are parallelly connected, improves battery module's life-span.

Description

Liquid cooling device and battery module

Technical Field

The utility model relates to an electric automobile battery field specifically relates to a liquid cooling device and battery module.

Background

With the development of new technologies such as battery without module and blade battery, the length of single row stack of battery cells in the battery module is longer and longer, and the length of the liquid cooling plate in the liquid cooling device is increased accordingly. In traditional liquid cooling plate, the water inlet generally sets up with the delivery port in same one side, under the operating mode of high temperature cooling or low temperature heating, because the flow of coolant liquid, the temperature that makes in the runner risees or reduces, under the trend of battery module and liquid cooling plate maximization, when the runner size is great, can lead to being close to the battery difference in temperature of coolant liquid import and export great, influences the free normal charge-discharge process of battery, reduces the free life of battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a liquid cooling device and battery module can make the battery module reach the samming effect, improves the life-span of battery module.

In order to achieve the above object, a first aspect of the present disclosure provides a liquid cooling device, which includes a temperature equalizing plate, an inlet channel, an outlet channel, and an inlet joint and an outlet joint respectively connected to the upper portions of the inlet channel and the outlet channel; the inlet channel and the outlet channel are connected to the temperature equalizing plate in parallel; the temperature equalizing plate is formed by connecting a plurality of pipelines in parallel.

Optionally, the conduit is a "U" shaped conduit.

Optionally, the pipelines include a liquid inlet pipe and a liquid outlet pipe, which are respectively a left pipeline and a right pipeline of the U-shaped pipeline; the liquid inlet pipe of each pipeline is connected with the liquid outlet pipe in sequence.

Optionally, the widths of the liquid inlet pipe and the liquid outlet pipe are both 5 mm-30 mm; the depth is 1 mm-4 mm.

Optionally, a first through hole and a second through hole are respectively arranged on the liquid inlet pipe and the liquid outlet pipe, and the first through hole and the second through hole are respectively located under the inlet channel and the outlet channel.

Optionally, each of the first through holes is located at the same height, and the inlet channel may just cover each of the first through holes; each of the second through holes is located at the same height, and the outlet passage may just cover each of the second through holes.

Optionally, the cross-sectional area of the inlet channel is greater than or equal to the sum of the cross-sectional areas of each of the liquid inlet pipes; the cross-sectional area of the outlet channel is larger than or equal to the sum of the cross-sectional areas of the liquid outlet pipes.

A second aspect of the present disclosure provides a battery module, which includes the above-mentioned liquid cooling device, a plurality of battery cells; the battery monomer is arranged on the temperature equalizing plate.

This openly is through parallelly connected a plurality of U type pipelines, utilizes the cold and hot exchange principle that the coolant liquid flows in and flows out at U type pipeline, fundamentally solves the problem that the regional temperature of liquid cooling plate coolant liquid import is low, exit region temperature is high, makes the battery module reach the samming effect, and then improves the life-span of battery module.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic diagram of a liquid cooling apparatus according to an embodiment;

FIG. 2 is a perspective view of a liquid cooling device configuration according to one embodiment;

fig. 3 is a schematic structural diagram of a battery module according to an embodiment.

Description of the reference numerals

1. Liquid cooling device 11 and temperature equalizing plate

111. Pipe 1111, drain pipe

1112. Liquid inlet pipe 12, inlet channel

13. Inlet fitting 14, outlet passage

112. A first via 113 and a second via

15. Outlet connector 2 and battery monomer

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional terms such as "upper, lower, left, right" and "above" generally refer to orientations and positional relationships illustrated in the drawings, for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. "first, second" are generally referred to for descriptive purposes and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 2, a first aspect of the present disclosure provides a liquid cooling device, where the liquid cooling device 1 includes a closed rectangular box-shaped temperature-uniforming plate 11, and an inlet channel 12 and an outlet channel 14 located above the temperature-uniforming plate 11, and an inlet joint 13 and an outlet joint 15 connected above the inlet channel 12 and the outlet channel 14, respectively; the length of the inlet channel 12 and the outlet channel 14 is equal to the width of the temperature-uniforming plate 11, the outlet channel 14 is connected with the inlet channel 12 side by side, and 3 side walls of the outlet channel are coplanar with 3 side walls of the temperature-uniforming plate 11.

The temperature equalizing plate 11 is formed by connecting 8 square pipelines 111 in parallel, and the flow resistance of the temperature equalizing plate 11 can be reduced by connecting 8 pipelines 111 in parallel. The pipelines form a U-shaped pipe, and the left and right pipelines 111 of the U-shaped pipe are respectively a liquid inlet pipe 1112 and a liquid outlet pipe 1111; each inlet pipe 1112 and outlet pipe 1111 are connected in sequence. The battery module flows in the pipeline 111 through the refrigerant, takes away the temperature of the battery module, and achieves the cooling effect. The temperature of the refrigerant in the liquid inlet pipe 1112 is lower than that of the liquid outlet pipe 1111, and the liquid inlet pipe 1112 and the liquid outlet pipe 1111 are connected in sequence to achieve the effect of temperature equalization.

The smaller the width of the liquid inlet pipe 1112 and the liquid outlet pipe 1111 is, the larger the number of the parallel pipes 111 is, the better the temperature equalization effect is, and the temperature equalization effect of the temperature equalization plate 11 will not be deteriorated along with the increase of the size thereof. The width and depth of the liquid inlet pipe 1112 and the liquid outlet pipe 1111 are set to be 10mm by combining the width and depth of the pipe 111 and the width of the battery module in the embodiment; the depths are all 4 mm.

Furthermore, the liquid inlet pipe 1112 and the liquid outlet pipe 1111 are respectively provided with a first through hole 112 and a second through hole 113, and the refrigerant enters and exits the pipe 111 from the inlet channel 12 and the outlet channel 14 through the first through hole 112 and the second through hole 113.

In order to enable the inlet channel 12 and the outlet channel 14 to cover all the first through holes 112 and the second through holes 113, the first through holes 112 and the second through holes 113 are required to be located at the same height, and the first through holes 112 and the second through holes 113 are arranged in a staggered manner and located at different heights.

In order to reduce the resistance of the refrigerant in the pipe 111, in this embodiment, the cross-sectional area of the inlet channel 12 is set to be larger than the cross-sectional areas of all the liquid inlet pipes 1112 in the vapor chamber 11; the cross-sectional area of the outlet channel 14 is set larger than the cross-sectional area of all the liquid outlet pipes 1111 in the vapor chamber 11.

Referring to fig. 2, a second aspect of the present disclosure provides a battery module, including the above liquid cooling device 1, a plurality of battery cells 2; the battery monomer 2 is positioned on the temperature equalizing plate 11, and flows in the liquid cooling device 1 through a cooling medium, so that the heat at the bottom of the battery monomer 2 is taken out of the battery module, and the safety and the service life of the battery module are improved.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner to avoid unnecessary repetition, and the disclosure does not separately describe various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A liquid cooling device is characterized by comprising a temperature equalizing plate, an inlet channel, an outlet channel, and an inlet joint and an outlet joint which are respectively connected above the inlet channel and the outlet channel; the inlet channel and the outlet channel are connected to the temperature equalizing plate in parallel; the temperature equalizing plate is formed by connecting a plurality of pipelines in parallel.

2. The liquid cooling apparatus of claim 1, wherein the pipe is a "U" shaped pipe.

3. The liquid cooling apparatus of claim 2, wherein the pipes comprise a liquid inlet pipe and a liquid outlet pipe, which are a left pipe and a right pipe of a "U" shaped pipe, respectively; the liquid inlet pipe of each pipeline is connected with the liquid outlet pipe in sequence.

4. The liquid cooling device of claim 3, wherein the width of each of the liquid inlet pipe and the liquid outlet pipe is 5mm to 30 mm; the depth is 1 mm-4 mm.

5. The liquid cooling apparatus of claim 3, wherein the liquid inlet pipe and the liquid outlet pipe are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively located right below the inlet channel and the outlet channel.

6. The liquid cooling apparatus of claim 5, wherein each of the first through holes is located at a same height, and the inlet channel covers each of the first through holes; each of the second through holes is located at the same height, and the outlet passage may just cover each of the second through holes.

7. The liquid cooling apparatus of claim 6, wherein the cross-sectional area of the inlet passage is greater than or equal to the sum of the cross-sectional areas of each of the inlet pipes; the cross-sectional area of the outlet channel is larger than or equal to the sum of the cross-sectional areas of the liquid outlet pipes.

8. A battery module comprising the liquid cooling apparatus of any one of claims 1 to 7, a plurality of battery cells; the battery monomer is arranged on the temperature equalizing plate.