Battery pack cooling device and battery module using same

Abstract

The invention provides a battery pack cooling device and a battery module using the same. The battery pack cooling device comprises at least one heat collection plate, at least one circulating pipeline, a cooling fin and an electromagnetic pump, wherein the heat collection plate clings to a battery pack to be cooled and is used for absorbing the heat of the battery pack to be cooled; the circulating pipeline is filled with liquid metal and is partially embedded in the heat collection plate; the cooling fin is connected with the circulating pipeline; the electromagnetic pump is used for providing magnetic field rotation powder for the liquid metal so as to drive the liquid metal to flow in the circulating pipeline in a circulating way. The battery pack cooling device adopts a way of combining the circulation cooling of the liquid metal with the cooling fin, so that the heat generated by the battery pack can be rapidly and effectively transferred into the outside; the battery pack cooling device is compact in whole structure and high in heat conduction efficiency, and is safe and reliable; furthermore, the liquid metal is driven by the electromagnetic pump, so that the driving efficiency is high, the energy consumption is low, the service life of a pump body is long, the cost of the cooling device is lowered, and the cooling requirement of the battery pack can be met.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a heat sink for a battery pack of a new energy vehicle and a battery module using the heat sink. Background technique [0002] With the shortage of energy resources and the increasing pressure of energy conservation and emission reduction, new energy vehicles are widely optimistic about the prospect because they have less impact on the environment than traditional vehicles. As the power source of new energy vehicles, the battery pack is usually formed by a large number of single batteries connected in series or in parallel. However, a single battery tends to generate a lot of heat during charging and discharging. If the heat cannot be effectively dissipated, the temperature of the battery will rise, thereby changing the electrical characteristics of the battery. For a battery pack, if there is a temperature difference between individual cells, the electrical characteristics w...

AI Technical Summary

Problems solved by technology

However, the heat dissipation effect of traditional air-cooled heat dissipation is poor; although water-cooled heat dissipation is stronger than air-cooled heat dissipation, the overall structure is bulky and there is a problem of liquid leakage; while air-conditioning heat dissipation has a large and complex structure, high cost, and its own consumption High energy, both have disadvantages

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