Power battery and vehicle provided with same

Abstract

The invention discloses a power battery and a vehicle provided with the same. The power battery comprises a box body, cells and a heating element, wherein the multiple cells are arranged inside the box body in sequence; and the heating element is arranged in the box body and adjacent to all the cells in order to heat all the cells when the temperature of the power battery is lower than a first predetermined temperature. Due to the setting of the heating element, all the cells can be effectively heated when the temperature of the power battery is lower than the first predetermined temperature to ensure the normal operation and normal charging of the power battery; and in addition, all the cells can be kept accordant in the temperature, so that the working state of the power battery can be better.

Description

technical field [0001] The invention relates to the field of power batteries for vehicles, in particular to a power battery and a vehicle with the power battery. Background technique [0002] In related technologies, the power battery used in domestic new energy vehicles does not have a heating system or uses a fluid to pass through a PTC (Positive Temperature Coefficient-positive temperature coefficient) heating wire to form a warm air system to heat the power battery. [0003] When the power battery without heating system is used when its temperature is lower than -5°C, lithium precipitation will occur, which will seriously affect the life and safety of the power battery; and the technical solution of using fluid to pass through the PTC heating wire to form a warm air system to heat the power battery The disadvantage is that the temperature of the warm air changes greatly during the internal circulation of the power battery, and the heat exchange efficiency is very low, wh...

AI Technical Summary

Problems solved by technology

[0003] When the power battery without heating system is used when its temperature is lower than -5°C, lithium precipitation will occur, which will seriously affect the life and safety of the power battery; and the technical solution of using fluid to pass through the PTC heating wire to form a warm air system to heat the power battery The disadvantage is that the temperature of the warm air changes greatly when passing through the internal circulation of the power battery, and the heat exchange efficiency is very low, which leads to poor temperature consistency in the power battery and affects the service life of the power

At the same time, the flow of warm air requires a dedicated air duct, which requires a relatively large internal space for the power battery, resulting in a relatively low space utilization rate for the power battery

Images