Battery pack heat management device as well as heat dissipation method and heating method thereof

Abstract

The invention provides a battery pack heat management device as well as a heat dissipation method and a heating method thereof. The battery pack heat management device comprises a plurality of singlebatteries, a metal plate, a metal fiber rod, a box body, a heat-sink cooling plate, a reflux unit, an electromagnetic heater and a spray device, wherein liquid in the box body is absorbed into throughholes formed in the metal plate by means of the metal fiber rod and grooves formed in the inner wall of the through holes of the metal plate; the liquid between the metal plate and the metal fiber rod is heated while the temperature of the power batteries rises, and a liquid phase changes into vapor after the temperature rises to a certain value; the vapor is condensed by means of a cooling effect of the heat-sink cooling plate, and then flows back to the box body through the reflux unit, so that the aim of cooling a battery pack is achieved by circulation; the heat dissipation structure forthe batteries is simplified. Under the cold circumstance, the electromagnetic heater is used for rapidly heating the liquid in the box body so as to promote heat circulation around the single batteries. The device and the methods have high-efficiency self-operating heat dissipation capability and the heating capability, and solve the problems that the thermal management system is high in cost, andconsumes large amount of electric quantity of the power batteries.

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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