Battery core fixing structure for electric automobile and electric automobile

Abstract

The invention discloses a battery core fixing structure for an electric automobile. The fixing structure comprises an automobile chassis, a heat dissipation plate and a plurality of battery cores, wherein the heat dissipation plate is fixedly connected to the automobile chassis; the battery cores are arranged on the heat dissipation plate through a fixing material; each of the battery cores is a soft-packed battery core or a steel-shell battery core; and when each of the battery cores is the soft-packed battery core, a gap with 1-10 mm is reserved between the soft-packed battery cores. According to the battery core fixing structure for the electric automobile and the electric automobile provided by the invention, the heat dissipation efficiency is high; more battery cores can be arranged on the automobile chassis, and the energy density is high.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a cell fixing structure of an electric vehicle and the electric vehicle. Background technique [0002] A cell refers to a single electrochemical cell containing positive and negative electrodes, including soft pack cells and steel shell cells. Battery PACK generally refers to a single battery component. For example, two batteries are connected in series to form a specific shape according to customer requirements. We call it battery PACK, which generally refers to a combined battery. A battery module is a multiple battery PACK composed of several to hundreds of battery cells connected in parallel and in series. In addition to the mechanical design part, a battery management system and a thermal management system can be added to form a relatively complete battery pack system. . [0003] With the gradual popularization of electric vehicles, people pay more and more attention to ...

AI Technical Summary

Problems solved by technology

[0004] Considering the integrity and consistency of the battery module and battery PACK, reinforcement ribs and structural beams need to be added to the chassis, resulting in batteries that cannot be completely covered on the entire chassis, resulting in a large amount of battery installation. A lot of space wasted and weight increased in the car, which limits the energy density of the battery, affects the battery life of electric vehicles, and greatly restricts the battery life of electric vehicles in the future.

In addition, the design of battery modules and battery packs needs to consider the heat dissipation problem to avoid thermal runaway. However, due to the constraints of the current battery design itself, it is impossible to maximize the heat dissipation and heat preservation of the battery cells, which is prone to heat loss due to heat dissipation. Accidents in which electric vehicles caught fire due to loss of control

In addition, due to the different models, sizes and appearance designs of electric vehicles at this stage, battery modules and battery packs need to be redesigned for different vehicles, resulting in a lot of repetitive work

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