Steel battery pack shell of new energy automobile

A technology for new energy vehicles and battery packs, which is applied in the direction of batteries, electric vehicles, battery pack components, etc., and can solve unfavorable lightweight, cost and quality stability, unfavorable lightweight and cost of battery pack shells, and battery pack casings. The total wall thickness of the body side circumference is large, etc., to achieve the effect of light weight, simple shape and low cost
CN114583347APending Publication Date: 2022-06-03BAOSTEEL METAL
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BAOSTEEL METAL
Publication Date
2022-06-03

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Abstract

A steel battery pack shell of a new energy automobile comprises a body which is a frame body, and at least one cross beam is arranged in the frame body in the length direction; the frame body is made of a hollow closed profile with a special-shaped section, and the hollow closed profile with the special-shaped section is composed of an upper cavity and a lower cavity which are formed by rolling or stamping and welding a plate blank; the upper cavity positioned at the upper part of the profile is of a triangular or quadrilateral structure, and the top surface of the upper cavity is a matching surface connected with a steel battery pack shell cover plate; the lower cavity positioned at the lower part of the profile is an L-shaped cavity; and the cover plate and the bottom plate are respectively arranged on the upper end surface and the lower end surface of the body frame body and are connected with the body frame body through processes such as screw joint, glue joint or welding. The weight and the cost of the steel battery pack shell applying the ultrahigh-strength steel are lower than those of an existing aluminum or steel battery pack shell under the same design requirement.
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Description

technical field

[0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a steel battery pack shell of a new energy vehicle and a manufacturing method thereof, which are used as carriers of BMS, battery modules, high-voltage charge-discharge circuits, cooling systems, etc. in the battery pack . Background technique

[0002] The battery pack shell (also known as battery tray, battery box, etc.) is the carrier of the BMS, battery module, high-voltage charge and discharge circuit and cooling system in the battery pack. It is an important structural component of the battery pack for new energy vehicles. The carrier plays a key role in safety protection. At present, the weight of aluminum battery pack casings is generally lighter than that of steel battery pack casings. In order to meet the specific energy requirements in the national subsidy policy, even if the cost of aluminum battery pack casings is high, the battery casing The...

Claims

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