Temperature control system and method for power battery pack in electric vehicle and electric vehicle

Abstract

The invention discloses a temperature control system and method for a power battery pack in an electric car and the electric car. The temperature control system comprises a voltage obtaining module, an electric current obtaining module, a temperature obtaining module, a heat-field distribution prediction module, a control module and a communication module. The heat-field distribution prediction module is used for obtaining voltage information, electric current information and temperature information to predict heat-field distribution situations of all positions of the power battery pack according to the modules; the control module is used for judging whether temperature abnormal situations occur or not according to the heat-field distribution situations and conducting temperature protection control over the power battery pack according to the temperature abnormal situations when the temperature abnormal situations occur; and the communication module is used for achieving communicationbetween the control module and a mobile terminal, wherein the control module sends the temperature information to the mobile terminal through the communication module and receives a control instruction sent by the mobile terminal through the communication module, so that remote temperature protection control over the power battery pack is achieved. According to the temperature control system, temperature control over the power battery pack can be more conveniently and effectively achieved.

Description

Technical field [0001] The present invention relates to the technical field of electric vehicles, in particular to a temperature control system for a power battery pack in an electric vehicle, a temperature control method for a power battery pack in an electric vehicle, and an electric vehicle. Background technique [0002] In electric vehicles, power batteries are an important part of it. The temperature is closely related to the performance of the power battery. When the temperature is too low, the electric vehicle may not be able to charge or start normally, and the capacity of its power battery will decrease accordingly; when the temperature is too high, it will seriously affect the working performance and service life of the power battery, and even overheat, Serious safety accidents such as explosions. [0003] At present, the temperature of the power battery can be controlled in the related technology, and the temperature of the power battery can be prevented from being too...

AI Technical Summary

Problems solved by technology

[0004] However, the space where the power battery is located is generally large, and the temperature of each position of the power battery is not the same, or even greatly different.

In related technologies, the actual temperature of the power battery is mostly based on one or several sampling points of the power battery. The actual temperature is undoubtedly not accurate enough, which makes the temperature control based on it not effective enough

[0005] In addition, when the vehicle is not working and the driver is far away from the electric vehicle, the power battery pack may also experience abnormal temperatures such as high temperature or low temperature due to the influence of ambient temperature.

At present, the relevant technologies only control the temperature of the power battery during the driving process of the vehicle, and cannot realize the real-time intelligent monitoring of the temperature of the power battery under all working conditions and at all times

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