A battery pack thermal management device and heat dissipation and heating method thereof

Abstract

The invention provides a heat management device for a battery pack and a heat dissipation and heating method thereof, which include a plurality of single batteries, metal plates, metal fiber rods, a box body, a heat radiation cooling plate, a reflow device, an electromagnetic heater, a spray device, a box The body absorbs the liquid in the box in the through hole of the metal plate through the metal fiber rod and the groove on the inner wall of the through hole on the metal plate. When the temperature of the power battery rises, the liquid between the metal plate and the metal fiber rod is heated, and the temperature rises. After reaching a certain value, the liquid phase changes into gas, and then the gas is condensed by the cooling effect of the heat dissipation cooling plate, and then flows back to the box through the reflux device, so as to achieve the purpose of heat dissipation of the battery pack in this cycle, which simplifies the structure of battery heat dissipation. In cold conditions, an electromagnetic heater is used to quickly heat the liquid in the tank to promote heat circulation around the single battery. The device and method have efficient self-operating heat dissipation and heating capabilities, and solve the problems of high cost of the thermal management system and large consumption of power battery power.

Description

technical field [0001] The present invention relates to the technical field of battery pack heat management, in particular to a battery pack heat management device and a heat dissipation and heating method thereof. Background technique [0002] As people's awareness of environmental protection continues to increase, the demand for new clean energy is also expanding. As a clean energy alternative to fossil energy, the application effect of batteries on electric vehicles has gradually been recognized by the public, making electric vehicles more and more popular. There are multiple battery packs distributed on the battery board of the electric vehicle, and the battery pack is usually connected in series by multiple battery packs to provide power supply for the electric vehicle and store energy continuously at the same time. However, the battery pack is a closed structure, its operating current is large, and the heat generated is large. If there is no effective heat dissipatio...

AI Technical Summary

Problems solved by technology

In this environment, the battery temperature rises sharply. If the battery cannot be cooled in time, it will cause irreversible damage to the power battery.

In severe cases, thermal runaway may even occur, resulting in catastrophic losses

The above problems have hindered the promotion of battery packs and electric vehicles, making it difficult for people to use electric vehicles with confidence

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