Testing device and testing method of battery performance in the process of moving of electric vehicle

Abstract

The invention provides a testing device and a testing method of battery performance in the process of moving of an electric vehicle, and relates to the field of performance testing of electric vehicles. Current data, voltage data and speed data of the electric vehicle in the process of moving are collected by the testing device through sensors, the data collected by the sensors are received and analyzed by a master control circuit so that the actual performance of a battery in the process of moving of the electric vehicle is obtained, time of power supply for a current sensor and time of receiving the data of the current sensor by the master control circuit can be controlled by the master control circuit, the master control circuit is capable of receiving the data of the current sensor, and meanwhile reducing consumed electric quantity in the process of testing effectively. According to the testing method, only one discharging test to the battery is needed in the process of drive testing, other tests can be finished by accessing load to the battery to be tested in a test room, and therefore consumed manpower and material resources in the process of testing of the battery performance can be reduced.

Description

technical field [0001] The invention relates to the field of electric vehicle performance testing, in particular to a battery performance testing device and a testing method during driving of an electric vehicle. Background technique [0002] The working conditions included in the driving process of electric vehicles are relatively complicated, starting acceleration, stable driving under different road conditions, overtaking acceleration, uphill, load, braking, etc. The battery discharge current under different working conditions is different and constantly changing. After the battery is repeatedly discharged and charged, the capacity will gradually decrease, and when the battery capacity drops to a certain level, it will be scrapped. The capacity fading characteristics of the battery are closely related to the usage of the battery. High current discharge will reduce the battery life, while low current discharge will help prolong the battery life. The standard test method o...

AI Technical Summary

Problems solved by technology

Take the lead-acid battery of an electric motorcycle as an example. According to the battery test standard, the cycle life of the battery is more than 200 times, while on some motorcycle models, the life span is less than 100 times.

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