CN218385397U

CN218385397U - Battery pack

Info

Publication number: CN218385397U
Application number: CN202222420862.2U
Authority: CN
Inventors: 韩钰莹; 方勇; 朱肃然; 吉影; 陈国强
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-01-24
Anticipated expiration: 2032-09-13

Abstract

The application relates to the technical field of batteries, and particularly discloses a battery pack. The battery pack comprises a liquid cooling plate, a box body and a joint component, wherein the joint component comprises a first pipeline and a second pipeline which are detachably connected, the first pipeline is arranged in the box body and connected with the liquid cooling plate, the second pipeline is arranged outside the box body, a hole is formed in the box body between the first pipeline and the second pipeline, and the second pipeline penetrates through the hole and is hermetically connected with the first pipeline. The joint component is designed in a segmented mode, installation flexibility is high, installation efficiency is improved, and follow-up disassembly, maintenance and replacement are convenient.

Description

Battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack.

Background

With the increasing demand of energy density of power batteries, high nickel anodes and silicon carbon cathodes become mainstream technical routes, and the temperature sensitivity window of the power batteries is more and more obvious, so that the performance and safety of the batteries are seriously affected, and therefore, a cooling system is an inevitable trend of development.

In the existing liquid cooling system of the battery pack, the liquid cooling plate joint is generally of an integrated structure, when the battery pack is assembled, an interface pipeline of the liquid cooling plate joint firstly extends out of an opening of a side plate of a box body of the battery pack, and then the liquid cooling plate joint is connected with a liquid cooling plate, so that the installation process is complicated, and the production efficiency is reduced; meanwhile, the existing liquid cooling plate joint is large in size and larger in occupied installation space, so that the energy of the battery pack is reduced.

SUMMERY OF THE UTILITY MODEL

The application discloses battery package for solve the complicated and great problem of occupation space of liquid cooling plate joint installation procedure of current battery package.

In order to achieve the purpose, the application provides the following technical scheme:

the application provides a battery pack, this battery pack includes liquid cooling board, box and joint Assembly, and this joint Assembly is including dismantling first pipeline and the second pipeline of connection, and the inside of box and be connected with the liquid cooling board are located to first pipeline, and the outside of box is located to the second pipeline, and the box between first pipeline and the second pipeline is equipped with the trompil, and the second pipeline passes the trompil and with first pipeline sealing connection.

The application provides a battery pack, wherein, when the erection joint subassembly, can directly put into the box of battery pack with first pipeline top-down, then be connected first pipeline and liquid cooling board, the outside pipeline of second tube coupling, the second pipeline can pass behind the trompil of the box of battery pack with first tube coupling, and sealing connection can guarantee between first pipeline and the second pipeline that the coolant liquid does not leak. The joint assembly segmentation design in this application can dismantle the connection between first pipeline and the second pipeline, need stretch out interface pipeline from the trompil of the box of battery package earlier when having avoided current liquid cold plate joint installation, and this joint assembly installation flexibility is high, improves the installation effectiveness, and the follow-up dismantlement maintenance of being convenient for is changed.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present application;

fig. 2 is a schematic view of a connector assembly penetrating a side plate of a battery pack according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a first pipeline according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a second pipeline according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a joint assembly according to an embodiment of the present application;

FIG. 6 is a schematic view of a connector assembly of an embodiment of the present application in connection with a liquid cooled plate;

FIG. 7 is a schematic view of a first conduit according to another embodiment of the present application;

FIG. 8 is a schematic view of a liquid-cooled panel according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a second pipeline according to another embodiment of the present application.

Reference numerals: 1-a battery pack; 100-a box body; 110-side plate; 120-liquid cooling plate; 300-a joint assembly; 310-a first conduit; 311-a first flange; 312-a stem; 313-a first tube; 320-a second conduit; 321-a second tube; 322-a pipe joint; 323-a second flange;

10-a plug-in connector; 11-a sealing ring;

01-a socket; 02-opening; connection port 03-connection port.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present application, referring to fig. 1, the battery pack 1 includes a liquid cooling plate 120 and a side plate 110, the liquid cooling plate 120 and the side plate 110 enclose a box 100 for accommodating a battery unit, the side plate 110 is provided with an opening for penetrating a connector assembly 300, the liquid cooling plate 120 is connected with an external pipeline of the battery pack 1 through the connector assembly 300, so that a cooling liquid is continuously circulated in the pipeline of the liquid cooling plate 120 to take away excess heat, and the battery pack 1 is ensured to be at an optimal working temperature.

Fig. 2 is a schematic view illustrating that a connector assembly of an embodiment of the present application is inserted into a battery pack side plate, and referring to fig. 2, the connector assembly 300 includes a first pipeline 310 and a second pipeline 320 that are detachably connected, the first pipeline 310 is used for being placed inside a box 100 of a battery pack 1 and being connected to a liquid cooling plate 120 of the battery pack 1, and the second pipeline 320 is used for being connected to an external pipeline of the battery pack 1 and being hermetically connected to the first pipeline 310 after passing through an upper opening of the side plate 110.

Wherein, the first pipeline 310 and the second pipeline 320 are connected in a plugging way. Fig. 3 is a schematic structural diagram of a first pipeline according to an embodiment of the present application, fig. 4 is a schematic structural diagram of a second pipeline according to an embodiment of the present application, and referring to fig. 3 and 4, a first pipeline 310 is provided with a socket 01, and a second pipeline 320 is provided with a plug 10 engaged with the socket 01. When the joint assembly 300 is installed, the first pipeline 310 can be placed into the box 100 of the battery pack 1 from top to bottom, and the insertion port 01 of the first pipeline 310 is aligned with the opening of the side plate 110, so that the situation that the joint pipeline penetrates through the opening of the side plate 110 first is avoided, and the installation efficiency is improved.

With continued reference to fig. 4, the plug connector 10 is provided with a sealing ring 11 to seal the first pipe 310 and the second pipe 320 to prevent the coolant from leaking. Preferably, two or more sealing rings 11 are provided on the plug 10 to further ensure the sealing performance between the first pipeline 310 and the second pipeline 320.

In an alternative of this embodiment, the end surface of the first pipe 310 for facing the side plate 110 of the tank 100 is provided with a gasket to ensure sealability between the first pipe 310 and the second pipe 320.

Fig. 5 is a schematic structural diagram of a joint assembly according to an embodiment of the present invention, fig. 6 is a schematic structural diagram of a joint assembly according to an embodiment of the present invention connected to a liquid cooling plate, and referring to fig. 5 and 6, a first pipe 310 and a second pipe 320 are connected by a flange to improve the firmness of the connection between the first pipe 310 and the second pipe 320.

The first flange 311 is disposed at an end of the first pipe 310 facing the side plate 110 of the case 100, the second flange 323 is disposed at an end of the second pipe 320 facing the side plate 110 of the case 100, and the first flange 311, the side plate 110 of the case 100 and the second flange 323 are connected by bolts, so that the firmness of the connection between the first pipe 310 and the second pipe 320 is improved, and the joint assembly 300 is fixed to the battery pack 1. A sealing gasket is arranged between the end face of the first flange 311 facing the side plate 110 and the side plate, so that the sealing performance between the first pipeline 310 and the second pipeline 320 is improved, and the sealing performance of the battery pack 1 is ensured.

In an alternative of this embodiment, the first flange 311 is a hollow design to reduce the weight of the component while ensuring the strength of the first flange 311.

In an alternative embodiment, the second flange 323 is a hollow design, so as to reduce the weight of the component while ensuring the strength of the second flange 323.

Fig. 7 is a schematic structural diagram of a first pipe according to another embodiment of the present application, fig. 8 is a schematic structural diagram of a liquid-cooled plate according to an embodiment of the present application, and referring to fig. 3 to 8 together, a first pipe 310 includes a pipe seat 312 and a first pipe 313 connected to the pipe seat 312, the pipe seat 312 is used for connecting to the liquid-cooled plate 120, the first pipe 313 is used for connecting to a second pipe 320, and the pipe seat 312 is provided with a chamber communicated with the first pipe 313.

With continued reference to fig. 7 and 8, the tube holder 312 is provided with a connection port 03 for sealing connection with the opening 02 of the liquid cooling plate 120, wherein the opening 02 of the liquid cooling plate 120 may be a liquid inlet or a liquid outlet. The tube holder 312 and the liquid cooling plate 120 are detachably connected to facilitate disassembly and assembly. In an alternative of this embodiment, the end surface of the tube seat 312 facing the liquid cooling plate 120 is connected to the liquid cooling plate 120, so as to increase the connection area between the first pipeline 310 and the liquid cooling plate 120 and improve the connection strength; meanwhile, the tube seat 312 is directly connected to the liquid cooling plate 120, so that the number of infusion pipes in the case 100 is reduced, the space occupied by the liquid cooling system in the case 100 of the battery pack 1 is reduced, and the space utilization rate is improved.

Fig. 9 is a schematic structural diagram of a second pipeline according to another embodiment of the present disclosure, and referring to fig. 4 to 6 and fig. 9 together, the second pipeline 320 includes a pipeline connector 322 and a second pipe 321 connected to the pipeline connector 322, the pipeline connector 322 is used for being plugged into an external pipeline, and the second pipe 321 is used for being connected to the first pipeline 310. Preferably, a sealing ring is provided between the pipe joint 322 and the external pipe to prevent the coolant from leaking.

The battery package that this application embodiment provided, when installation joint Assembly 300, the liquid cooling plate 120 in the box 100 of battery package 1 is connected to first pipeline 310, the outside pipeline of battery package 1 is connected to second pipeline 320, second pipeline 320 passes behind the trompil on the box 100 of battery package 1 with first pipeline 310 sealing connection, this joint Assembly 300 installation is nimble, it is convenient to dismantle, and has saved the occupation space of battery package liquid cooling system in battery package 1.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. The utility model provides a battery pack, includes liquid cooling board, box and joint Assembly, its characterized in that, joint Assembly is including dismantling first pipeline and the second pipeline of connection, first pipeline is located the inside of box and with the liquid cooling board is connected, the second pipeline is located the outside of box, first pipeline with box between the second pipeline is equipped with the trompil, the second pipeline pass the trompil and with first pipeline sealing connection.

2. The battery pack of claim 1, wherein the first tube is plugged into the second tube; the first pipeline is provided with a plug interface, and the second pipeline is provided with a plug connector matched with the plug interface.

3. The battery pack of claim 2, wherein the plug connector is provided with a sealing ring.

4. The battery pack according to claim 1, wherein the first pipe is provided with a gasket for facing an end surface of the case.

5. The battery pack of any of claims 1-4, wherein the first and second conduits are connected by a flange.

6. The battery pack of claim 1, wherein the first conduit comprises a header and a first tube connected to the header.

7. The battery pack of claim 6, wherein the tube holder is adapted to be connected to the liquid cold plate, the first tube body is adapted to be connected to the second tube, and the tube holder is provided with a chamber in communication with the first tube body.

8. The battery pack of claim 7, wherein the tube holder is provided with a connection port for sealing connection with the opening of the liquid cold plate.

9. The battery pack of claim 1, wherein the second conduit comprises a second tubular body and a conduit fitting connected to the second tubular body.

10. The battery pack of claim 9, wherein the tube connector is configured to connect to an external tube and the second tube is configured to connect to the first tube.