Battery pack and electric vehicle

Abstract

The invention provides a battery pack. The battery pack comprises a box body, an explosion-proof structure and a plurality of pole core strings which are positioned in the box body and are electrically connected with one another, wherein the box body comprises at least one sub-box body, structural beams are arranged in the sub-box body, the interior of the corresponding sub-box body is divided into a plurality of accommodating cavities by the structural beams, and pole core strings are arranged in the accommodating cavities; a through hole is formed in the box body, the accommodating cavity is communicated with the through hole, and the explosion-proof structure correspondingly seals the through hole; and a mounting part is arranged on the box body and is used for being fixedly connected with an external load. The invention further provides an electric vehicle. According to the battery pack, the explosion-proof structure is arranged at the position, which corresponds to the accommodating cavity, of the box body, the battery pack can be prevented from exploding due to abnormal work and violent gas production of the pole core string in the accommodating cavity, and the battery pack is simple in structure, high in assembly efficiency and beneficial to reducing the production cost.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery pack and an electric vehicle. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. The design of a traditional battery pack box usually includes a tray and an upper cover connected to the tray. The tray is welded by a frame structure composed of several side beams and a bottom plate, and some reinforced beams and longitudinal beam structures are designed inside the tray. The modules are fixed on the bottom plate, the structure of the battery box is relatively complex, the manufacturing cost is high, and the versatility between different projects is poor, so it is not easy to standardize, modularize, and mass-produce the battery pack box. Moreover, when the existing battery pack is assembled, several single cells are usually arrang...

AI Technical Summary

Problems solved by technology

Due to the addition of structural parts such as end plates and side plates in this assembly method, the weight of the battery pack is relatively large and the space utilization rate is low, which is not conducive to the realization of the lightweight design of electric vehicles and cannot meet the needs of electric vehicles with high battery life. ability needs

[0003] In addition, the box of the current battery pack is usually a sealed box. When the single battery contained in the box produces gas violently due to abnormal operation, the air pressure will cause the battery pack to explode, which will affect the safety of the battery pack. sex

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