Integrated manufacturing method of new energy battery box body and liquid cooling plate

Abstract

The invention provides an integrated manufacturing method of a new energy battery box body and a liquid cooling plate, and belongs to the field of new energy batteries. And then the new energy battery box frame and the liquid cooling plate are put into an electric heating radiation brazing furnace to be brazed under nitrogen protection after being positioned and placed well, so that the new energy battery box frame and the liquid cooling plate are welded together, the shearing strength of the new energy battery box frame and the liquid cooling plate is tested, and the welding strength of the new energy battery box frame and the liquid cooling plate is judged. And nitrogen protection is adopted, so that the brazing effect is good, the welding process is not influenced by external factors, and after brazing welding is adopted, the welding effect is guaranteed, and meanwhile, the efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of new energy batteries, in particular to an integrated manufacturing method of a new energy battery box and a liquid cooling plate. Background technique [0002] With the continuous development of the automobile industry, the development of new energy vehicles is also relatively rapid, and the battery in new energy vehicles is very important. The new energy battery includes a box, which is used to install the battery, and the battery is prone to heat, so it needs to be used The liquid cold plate cools the battery in the box. At present, the integration methods of the liquid cooling plate and the cabinet are mainly as follows: 1. Hot-melt rivets are currently widely used in the industry. The batch production of hot-melt rivets takes about 5 seconds to connect each rivet. Usually, 60 or more rivets are required. Equipment Input and parts costs are higher. Its sealing uses two-component sealant, and its airtightness a...

AI Technical Summary

Problems solved by technology

2. Friction stir welding, which requires high processing precision and low mass production efficiency, is currently relatively seldom used

The prior art patent CN210956799U discloses a power battery box structure, which discloses that the whole box mainly adopts a brazing process, which reduces the use of friction stir welding and reduces the overall weight of the box and the liquid cooling system. Reduce costs and improve production efficiency to a certain extent; solve the problems of low production efficiency and high cost of the current aluminum box body using friction stir welding technology, and at the same time realize the lightweight design of the battery pack box body to a certain extent

The patent discloses that the box adopts a brazing process, but the new energy battery box is made of a 6-series aluminum-silicon alloy, and the liquid cooling plate is a 3-series aluminum-manganese alloy. How to braze the two and how to choose the solder can make the two Welding effect, this is a difficult problem, so it is very necessary to solve this problem