A system for automatically identifying and controlling the type of battery pack for electric vehicles

Abstract

The invention provides a system and a method for automatically identifying a battery type of an electric car. The system comprises a key switch, a motor controller and a battery module with a battery management system, wherein the key switch is connected with an enabling end of the motor controller; the signal end of the motor controller is interconnected with the signal end of the battery management system; the anode and the cathode of the battery module are connected with an anode control end and a cathode control end of the motor controller respectively; the battery management system is used for transmitting total voltage of the battery module and a residual total power amount SOC to the motor controller; the motor controller is used for comparing the total voltage of the battery module and the residual total power amount SOC of the battery module with an inner preset value to obtain a battery module type and a working parameter corresponding to the battery type; the motor controller is used for controlling the switching-on / off of an anode output and / or a cathode output of the battery module according to the working parameter.

Description

technical field [0001] The invention relates to the field of automation, in particular to a system for automatically identifying and controlling the battery pack type of an electric vehicle. Background technique [0002] In the design of electric vehicles, in order to protect the battery life, it is necessary to set the protection voltage of the battery, and different types of batteries need to set different protection voltage values. In this protection interval, the whole vehicle limits the power output of the motor through the motor controller , to reduce the discharge current of the battery to protect the battery, but the replacement of the battery pack cannot be avoided during the operation or maintenance of the battery. If the protection voltage of the battery is not changed by the car, it will inevitably affect the life of the battery and even the work performance of the whole vehicle. It is urgent for those skilled in the art to solve the above technical problems. C...

AI Technical Summary

Problems solved by technology

[0002] In the design of electric vehicles, in order to protect the battery life, it is necessary to set the protection voltage of the battery, and different types of batteries need to set different protection voltage values. In this protection interval, the whole vehicle limits the power output of the motor through the motor controller , to reduce the discharge current of the battery to protect the battery, but the replacement of the battery pack cannot be avoided during the operation or maintenance of the battery. If the protection voltage of the car-to-battery is not changed, it will inevitably affect the life of the battery and even the performance of the whole vehicle. It is urgent for those skilled in the art to solve the above technical problems

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