CN-119695340-B - Side-cooling battery pack and installation method thereof

CN119695340BCN 119695340 BCN119695340 BCN 119695340BCN-119695340-B

Abstract

The patent application belongs to the technical field of energy storage equipment, and particularly relates to an installation method of a side-cooling battery pack, which comprises the following steps of S1, putting a plurality of battery modules and cooling pipes on a bottom plate to enable the cooling pipes to bypass two sides of each battery module in sequence, S2, synchronously inwards extruding the cooling pipes and the battery modules from two sides of the bottom plate through an extruding mechanism to enable the side walls of the cooling pipes to be in contact with the side walls of the battery modules, S3, enabling an upper cover to penetrate through two ends of the cooling pipes and be installed on the bottom plate, enabling two switching structures to be installed on the outer sides of the upper cover and be connected with two ends of the cooling pipes, and the side-cooling battery pack.

Inventors

FENG SHOUWANG
LI DESHENG
LIU BO
DAI ZHENG
Li Boguo

Assignees

清安储能技术(重庆)有限公司

Dates

Publication Date: 20260505
Application Date: 20241220

Claims (8)

1. The method for installing the side-cooled battery pack is characterized by adopting an integrally formed cooling pipe and comprises the following steps of: S1, arranging a plurality of side pipes and end pipes in a staggered manner, firstly placing a plurality of battery modules on a bottom plate, enabling the same ends of the battery modules to be in contact with the inner sides of a supporting frame, then placing the cooling pipes between the battery modules, enabling the cooling pipes to bypass two sides of each battery module in sequence, and limiting the end pipes in the height direction through the supporting frame; Two sections of adjacent side pipes of part of the cooling pipes are positioned between the same adjacent battery modules, end pipes between the two sections of adjacent side pipes are outwards bent to form a ball head or a square head, and two ends of the cooling pipes are positioned on the same side of the upper cover; S2, synchronously extruding the cooling pipe and the battery module inwards from two sides of the bottom plate through an extruding mechanism so that the side wall of the cooling pipe is contacted with the side wall of the battery module; And S3, enabling the upper cover to penetrate through two ends of the cooling pipe and to be mounted on the bottom plate, enabling two switching structures to be mounted on the outer side of the upper cover and connected with two ends of the cooling pipe, specifically, enabling the switching structures to comprise connecting blocks, sealing plates and connectors, enabling the connecting blocks to be welded on the sealing plates, enabling the connectors to be welded on the connecting blocks to form switching structures, enabling the sealing plates in the switching structures to be sleeved on the cooling pipe through first through holes, then conducting welding fixation, enabling a glue injection groove in the connecting blocks to be filled with sealant, enabling the return-shaped plate to be mounted on the inner side of the upper cover through first fasteners, enabling the containing groove to be located on the inner side of the upper cover, enabling the upper cover to be buckled on the bottom plate, enabling the sealing plates to be connected with the containing groove through second fasteners, and enabling the connecting blocks to be located in the containing groove.
2. The method for installing a side-cooled battery pack according to claim 1, wherein the base plate is fixedly connected with a supporting frame, and in step S1, The cooling pipes are formed by bending extruded aluminum square pipes for multiple times, a plurality of side pipes and end pipes are arranged in a staggered mode, the connection positions of the side pipes and the end pipes are round angles, the side pipes correspond to the side faces of each battery module, and the end pipes correspond to the end portions of each battery module.
3. The method of installing a side-cooling battery pack according to claim 1, wherein in step S1, heat-conductive insulating glue is adhered to both sides of each of the battery modules, and the heat-conductive insulating glue pre-positions the cooling pipes.
4. The method of installing a side-cooled battery pack according to claim 1, wherein in step S2, after the extrusion is completed, side plates are installed on both sides of the bottom plate, and both sides of the extruded cooling pipe are secondarily restrained.
5. The method of installing a side-cooled battery pack according to claim 1, wherein, The first fastener and the second fastener both adopt sealing screws.
6. The battery pack is characterized by comprising a bottom plate, an upper cover and a plurality of battery modules, wherein the battery modules are arranged on the bottom plate, the battery pack further comprises a side cooling structure, the side cooling structure comprises a switching structure and integrally formed cooling pipes, the cooling pipes are wound one by one along each battery module and are in contact with two sides of each battery module, the two switching structures are respectively arranged at two ends of the cooling pipes and extend out of the side wall of the upper cover and are detachably connected with the upper cover, and two ends of the cooling pipes are respectively communicated with a liquid inlet pipe and a liquid outlet pipe of refrigeration equipment through corresponding switching structures.
7. The battery pack according to claim 6, wherein: the switching structure comprises a sealing plate and a joint, a first through hole is formed in the sealing plate, the cooling pipe penetrates through the first through hole and is fixedly connected with the sealing plate, and the joint is communicated with the end part of the cooling pipe; the side wall of the upper cover is fixedly connected with a fixed plate, a second through hole is formed in the fixed plate, the sealing plate is tightly propped against the inner side of the fixed plate, and the end part of the cooling pipe penetrates through the second through hole and is fixedly connected with the joint, so that the joint is positioned on the outer side of the fixed plate; The switching structure further comprises a connecting block, the connecting block is fixedly connected to the sealing plate and extends out of the second through hole, a communication cavity is formed in the connecting block, the cooling pipe is communicated with the connector through the communication cavity, a glue injection groove is formed in the inner side of the connecting block around the cooling pipe, and sealing glue is filled in the glue injection groove.
8. The battery pack according to claim 7, wherein: the fixing plate comprises a return-shaped plate and a containing groove, the return-shaped plate is arranged on the inner wall of the upper cover through a screw, the containing groove is positioned on the inner side of the upper cover and is tightly propped against the sealing plate, the containing groove is fixedly connected to the inner wall of the return-shaped plate and is connected with the sealing plate through the screw, the second through hole is formed in the containing groove, and the connecting block penetrates through the second through hole and is positioned in the containing groove.

Description

Side-cooling battery pack and installation method thereof Technical Field The invention relates to the technical field of energy storage equipment, in particular to a method for installing a side-cooling battery pack and the battery pack. Background The existing side-cooling battery pack is characterized in that a plurality of cooling plates are arranged on the side face of a battery module (the battery module is composed of a plurality of electric cells), and compared with the scheme that the cooling plates are arranged at the bottom of the battery module, the side-cooling battery pack is closer to a heating area (electric cell internal chemical reaction, current in and out of a tab) of the battery module, so that the heat productivity of the middle upper part of the battery module is larger), and therefore the heat dissipation effect is improved. However, in the conventional side-cooled battery pack, it is necessary to place a plurality of battery modules on a base plate and position the battery modules by means of a connector, mount a plurality of cold plates and adapters on the sides of the battery modules and weld the battery modules to the base plate, mount two plastic pipes having a plurality of branch pipes on the liquid inlet and outlet ends of the battery pack, and weld the branch pipes to the adapters. In the installation, the connection of the cold plates, the joints and the branch pipes is required to be welded, more welding spots can lead to longer assembly time, and the welding positions are easy to leak points, so that the risk of leakage in the battery pack is increased, and each battery module and each cold plate are required to be positioned and fixed one by one in the installation, so that the installation process is complicated. Disclosure of Invention In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a method for installing a side-cooled battery pack, which is used for assembling the battery pack, and has high assembly efficiency and small leakage risk. The technical scheme adopted by the invention is as follows: the method for installing the side-cooled battery pack adopts an integrally formed cooling pipe and comprises the following steps: S1, placing a plurality of battery modules and cooling pipes on a bottom plate, so that the cooling pipes bypass two sides of each battery module in sequence; S2, synchronously extruding the cooling pipe and the battery module inwards from two sides of the bottom plate through an extruding mechanism so that the side wall of the cooling pipe is contacted with the side wall of the battery module; and S3, enabling the upper cover to penetrate through two ends of the cooling pipe and be mounted on the bottom plate, and enabling the two switching structures to be mounted on the outer side of the upper cover and connected with the two ends of the cooling pipe. Compared with the prior art, the invention has the beneficial effects that: 1. Because the cooling pipe is integrally formed, the part positioned in the battery pack does not need welding or a joint, leakage points are not easy to occur, the risk of leakage is reduced, and the short circuit of the battery core caused by leakage of the cooling liquid is avoided; 2. When the battery pack is installed, only the cooling pipe and the switching structure are required to be assembled, after the cooling pipe is placed on the bottom plate, the two switching structures and the cooling pipe can be connected by welding, welding spots are only two, the switching structure and the upper cover can be connected by bolts, compared with the parallel side cooling structure, the welding spots are greatly reduced, the assembly is more convenient, and the disassembly is easier during maintenance; 3. In step S2, because both sides are synchronously extruded, even if the transverse placement position of the battery module is dislocated to some extent during each installation, the position after extrusion is not affected, and the positioning time of the battery module before extrusion is saved. According to the invention, the cooling pipe is an extruded aluminum square pipe, the aluminum square pipe is bent for a plurality of times to obtain the cooling pipe, the cooling pipe is provided with a plurality of side pipes and end pipes in a staggered mode, the connection positions of the side pipes and the end pipes are round angles, the side pipes correspond to the side surfaces of each battery module, and the end pipes correspond to the end parts of each battery module. The beneficial effects are that: 1. the cooling pipe obtained by extrusion and bending is not easy to leak, the side wall of the aluminum square pipe is a plane, the side wall of the aluminum square pipe is more attached to the side wall of the battery module, and the refrigerating effect is better; 2. The refrigerating equipment generally used for the battery pack is divided into air cooling, liquid cooling