Heat preservation device for battery box of pure electric vehicle at low temperature

Abstract

The invention discloses a heat preservation device for a battery box of a pure electric vehicle at low temperature. The heat preservation device comprises a flow guide pipe, a temperature adjusting box, a battery heat preservation box and a pure electric vehicle battery; a mounting partition plate is arranged in an inner cavity of the battery heat preservation box, the pure electric vehicle battery is arranged in the mounting partition plate, a heat preservation cavity is formed between the inner wall of the battery heat preservation box and the mounting partition plate, a box cover is arranged at the top of the battery heat preservation box, a temperature adjusting box is arranged on the box cover, the flow guide pipe sequentially penetrates through the temperature adjusting box and extends to the box cover, a plurality of communicating pipelines are arranged in the box cover in an annular array mode, inlets of the communicating pipelines are connected with an outlet of the flow guide pipe, outlets of the communicating pipelines are connected with a flow dividing pipe, and the flow dividing pipe extends into the heat preservation cavity. According tot he invention, the battery heat preservation box fully utilizes redundant heat energy of a pure electric vehicle, the temperature environment of the battery of the pure electric vehicle is regulated and controlled, energy is fully utilized, the working efficiency of the battery of the pure electric vehicle is greatly improved, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a heat preservation device for a battery box of a pure electric vehicle at low temperature. Background technique [0002] Chinese patent CN210040469U discloses a heat insulation cover for keeping the battery box of a pure electric vehicle at a low temperature. The material for manufacturing the heat insulation cover includes a heat insulation layer and an outer layer. Gel, or knitted glass fiber, or knitted heat insulation blanket, the material used for the above outer layer is glass fiber cloth; the above heat shield is used to wrap the battery box of the pure electric vehicle, and the above heat shield is provided with a fixed component for Fixed connection of the heat shield. The beneficial effect is that it can effectively isolate the adverse effect of external low temperature on the normal operation of the battery box of the pure electric vehicle, and ensure ...

AI Technical Summary

Problems solved by technology

[0003] At present, the use of electric vehicle batteries in low temperature environments will affect the charging and discharging efficiency of the batteries, as well as the life of the electric vehicle batteries themselves. In the prior art, devices such as incubators are usually used to protect the electric vehicle batteries. There is a problem of poor insulation effect

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