Temperature regulation system and method for power battery

Abstract

The invention belongs to the field of power batteries, and in particular relates to a temperature adjustment system and method for a power battery. The temperature adjustment system includes a pipeline and a controller. The pipeline is provided with a circulating cooling liquid and includes a first cooling fluid installed on the power battery. The pipeline and the second pipeline arranged on the motor; the controller is respectively connected to the power battery and the motor, the controller monitors the real-time temperature of the power battery and judges whether the real-time temperature of the power battery is lower than the first threshold and adjusts the loss of the motor according to the judgment result Power; wherein, when the real-time temperature of the power battery is lower than the first threshold, the controller increases the power loss of the motor to increase the heat generated by the motor, so that the coolant that heats up due to the increase in heat generated by the absorption motor heats the power battery . The invention uses the power loss of the motor during the working process as the heat source for raising the temperature of the power battery, and can utilize the power loss to reduce energy waste.

Description

technical field [0001] The invention belongs to the field of battery protection, and in particular relates to a temperature regulating system and method for a power battery. Background technique [0002] The power battery can provide electric energy for electric vehicles. When the temperature of the power battery is lower than its normal operating range, its input and output capabilities will be limited. For example, the endurance of electric vehicles in winter is severely reduced, which affects the travel experience of users. [0003] In order to solve the temperature problem of the power battery, in the prior art, a heater is installed upstream of the power battery coolant. When the low temperature occurs, the heater is controlled to heat the coolant so as to increase the temperature of the battery to improve the input and output capabilities of the battery. But this method wastes more energy. [0004] Correspondingly, there is a need in the art for a power battery tempe...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem in the prior art that raising the temperature of the power battery in a low-temperature environment is relatively wasteful of energy, the present invention provides a temperature adjustment system for the power battery, which is used to adjust The temperature of the power battery of an electric vehicle, the temperature regulation system includes: a pipeline, which is provided with a circulating coolant, at least part of the pipeline is arranged on the power battery and the motor; a controller, which is connected with the The power battery is connected to the motor, and the controller is configured to monitor the real-time temperature of the power battery and determine whether the real-time temperature of the power battery is lower than a first threshold and adjust the power loss of the motor according to the judgment result; wherein , when the real-time temperature of the power battery is higher than or equal to the first threshold, the controller does not change the power loss of the motor; when the real-time temperature of the power battery is lower than the first threshold , then the controller increases the power loss of the motor to increase the heat generated by the motor, so that the cooling fluid heated up by absorbing the increased heat generated by the motor heats the power battery

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