Thermal management device for power batteries and thermal management method for power batteries

Abstract

The invention discloses a thermal management device for power batteries and a thermal management method for the power batteries under abnormal working conditions. The thermal management device for the power batteries comprises an acquisition module, an evaluation module, a forecast module, a display module and a control module, wherein the forecast module is used for calculating the heat generation rate and the specific heat capacity according to temperature and temperature rise rate information obtained by the acquisition module and the evaluation module and information such as types, operating states, states of charge and the like of the power batteries so as to obtain forecasted temperature field distribution of a battery unit, and the display module is used for displaying the temperature field distribution of the battery unit forecasted by the forecast module and a current alarm status of the battery unit to a user. The thermal management method for the power batteries is capable of forecasting the temperature field distribution of the battery unit according to acquired temperature and temperature rise data, and at least one of control measures such as turn-off, heat dissipation, alarm and the like is effectively taken, so that the danger of an automobile due to the power batteries can be reduced under the abnormal working conditions.

Description

technical field [0001] The invention relates to a device and method for managing the thermal stability of an electric vehicle power battery. Specifically, it relates to a heat management device and method for a power battery under abnormal working conditions such as accidents or extreme weather of electric vehicles. Background technique [0002] Due to the continuous shortage of global oil resources and the continuous deterioration of the weather environment, the development and utilization of new energy sources have received widespread attention from all over the world. As the automotive industry that consumes 10% of the world's total energy, the research and development of electric vehicles has been It is considered to be the most realistic and effective way to solve the energy crisis and environmental protection at present, and the core technology for the development of electric vehicles is the power battery. However, when the power battery is exposed to high temperature...

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Problems solved by technology

[0005] In order to reduce personal injury, equipment loss and economic loss caused by battery thermal stability under abnormal working conditions of electric vehicles, the present invention proposes a method and device for battery thermal management under abnormal working conditions of electric vehicles, which solves the problems of the prior art. Only the temperature and temperature rise rate are used as reference values, and there are potential safety hazards that only rely on real-time monitoring data to take control measures

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