Method and device for processing electric vehicle temperature data

Abstract

The invention relates to a method and a device for processing electric vehicle temperature data. The method comprises: according to a preset temperature interval, limiting values of an original temperature value of an electric vehicle component, the original temperature value being acquired in a current period, to obtain first temperature data of the current period; according to a preset filter coefficient, performing filter processing on first temperature data, to obtain second temperature data of the current period; according to a preset temperature variation threshold, limiting values of variable quantity of the second temperature data of the current period, to obtain to-be-output temperature data of the current period; when the to-be-output temperature data of the current period is detected to be abnormal, resetting the to-be-output temperature data of the current period, using the reset temperature data as the temperature data output by the current period. The method and the device can prevent frequent startup of a cooling device and frequent switchover of amplitude of cooling operation, so as to improve service life of the device, and improve stability of a thermal managementsystem.

Description

technical field [0001] The present disclosure relates to the field of vehicle thermal management, in particular to a method and device for processing temperature data of an electric vehicle. Background technique [0002] The vehicle thermal management system of pure electric vehicles includes the cooling system of the drive motor, the interior air conditioning management system, the power battery temperature control system, OBC (On Board Charger, on-board charger) and DCDC cooling system, etc. Since the temperature data collected by the temperature sensor is closely related to the thermal management control of each subsystem, the processing method of the temperature data directly affects the control effect of the thermal management system on the vehicle's cold and thermal balance. [0003] In the actual control process, due to the large specific heat capacity of some electric vehicle accessories, the temperature data amplitude is large after continuous operation, while some ...

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Problems solved by technology

[0003] In the actual control process, due to the large specific heat capacity of some electric vehicle accessories, the temperature data amplitude is large after continuous operation, while some electric vehicle accessories have small heat capacity, and the temperature data changes frequently after continuous operation. Therefore, if the electric vehicle The original temperature data of the car accessories is directly related to the control quantity of the cooling equipment to maintain the thermal balance of the electric vehicle accessories, which will lead to frequent opening of the cooling equipment and frequent switching of the cooling action range, which will significantly reduce the service life of the equipment and is not conducive to the thermal management system. Stablize

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