Automatic control thermal management system for power battery based on phase change energy storage and thermoelectric effect

Abstract

The invention discloses a power battery automatic control thermal management system based on phase change energy storage and thermoelectric effect, which comprises a battery pack module, a gravity heat pipe pack and a temperature automatic control module, wherein, the battery pack module comprises a single battery, a composite phase change material hollow cylinder and an aluminum base shell; The gravity heat pipe group comprises a plurality of gravity heat pipes; The temperature automatic control module comprises a semiconductor thermoelectric wafer soaking plate sub-module and a temperature measuring thermocouple distributed in each battery sub-module. The semiconductor thermoelectric wafer soaking plate module comprises a semiconductor thermoelectric wafer, a soaking plate, fins, and a temperature measuring thermocouple is used for adjusting the positive connection and the negative connection of the semiconductor thermoelectric wafer according to the measured temperature. Compared with the prior art, the invention can effectively solve the problem of thermal management and control of the power battery by improving the structure and setting mode of the key module components, the internal structure and the working mode of mutual cooperation among the module components, and the like.

Description

technical field [0001] The invention belongs to the technical field of power batteries, and more specifically relates to a power battery automatic control thermal management system based on phase change energy storage and thermoelectric effect. The power battery thermal management system can work effectively in extreme temperature environments. It is a high-efficiency energy-saving technology. Background technique [0002] In the 21st century, the energy crisis is a topic that has attracted widespread attention all over the world. Among them, petroleum resources are the pillar energy of the economic industries of various countries and industries, and the annual petroleum consumption of the transportation industry accounts for about 50% of the total annual global petroleum exploitation. At the same time, the exhaust emission of ordinary fuel vehicles poses a huge threat to the environment due to air pollution. Therefore, the development of new energy pure electric vehicles ...

AI Technical Summary

Problems solved by technology

Air-cooled liquid-cooled battery thermal management technology has achieved certain results, and has been successfully applied to the thermal management of some electric vehicles, but their main disadvantage is that they need a certain amount of energy to support their normal operation

[0004] In addition, the design scheme of the phase change material thermal management system proposed at this stage basically does not take into account the temperature characteristics of the battery pack in extreme conditions.

In the high temperature environment in summer, after the fast charging of the battery is completed, the temperature of the battery pack module will be at an extremely high level; at this time, if only phase change materials are used to absorb and conduct heat, it cannot meet the purpose of rapid heat dissipation

In some severe cold cities in the north, the temperature of the car will drop to tens of degrees Celsius below zero when it is started in winter. If the battery pack module is not heated, the car cannot run stably

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