A kind of aluminum alloy battery pack shell and its manufacturing method

Abstract

The invention discloses an aluminum alloy battery pack shell and a manufacturing method thereof, comprising an upper cover and a lower shell; a sealing strip is arranged between the upper cover and the lower shell, and a hole for installing a battery module is formed. Space; the upper cover and the lower shell are combined by aluminum alloy plates; the aluminum alloy plates include the upper layer, the lower layer, the middle honeycomb core layer, and the first high temperature resistant inorganic adhesive layer; The reinforcement layer between the honeycomb core layer and the first high-temperature-resistant inorganic adhesive layer, and the barrier structure in the honeycomb holes connected to the middle honeycomb core layer; the aluminum alloy plate with the reinforcement layer and barrier structure is used to improve the plate quality. The strength of the structure, and the weight of the aluminum alloy is relatively light, thereby reducing the weight of the entire battery pack shell and ensuring the structural strength; the use of mold matching, welding technology, and bonding of structural adhesives makes the battery pack shell The reliability of the connection is better, the sealing is better, and the appearance is more beautiful.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle battery packs, in particular to an aluminum alloy battery pack shell and a manufacturing method thereof. Background technique [0002] New energy vehicles refer to gasoline , Diesel engines All other energy vehicles, including fuel cell vehicles, hybrid vehicles, hydrogen energy vehicles and solar vehicles; their exhaust emissions are relatively low; currently most of the new energy vehicles on the Chinese market are hybrid vehicles and pure electric vehicles Automobiles; among them, pure electric vehicles, battery packs are the most important components on pure electric vehicles. The demand for electric vehicles; the battery pack generally includes a shell, which is connected to the insulator and the battery module in the shell, and the external wiring module connected to the shell; the shell also includes a lower shell and an upper cover; since the shell is set outside , so the re...

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Problems solved by technology

[0002] New energy vehicles refer to gasoline , Diesel engines All other energy vehicles, including fuel cell vehicles, hybrid vehicles, hydrogen energy vehicles and solar vehicles; their exhaust emissions are relatively low; currently most of the new energy vehicles on the Chinese market are hybrid vehicles and pure electric vehicles Automobiles; among them, pure electric vehicles, battery packs are the most important components on pure electric vehicles. The demand for electric vehicles; the battery pack generally includes a shell, which is connected to the insulator and the battery module in the shell, and the external wiring module connected to the shell; the shell also includes a lower shell and an upper cover; since the shell is set outside , so the requirements for its structural reliability are high; the traditional shell is made of steel, all of which are assembled by welding or integrally cast; the weight of the steel material is large, and defects such as stress deformation are prone to occur during welding, and slag inclusions are prone to occur during casting , cracks, shrinkage cavities and other defects

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