Electric vehicle battery management system and method

Abstract

The invention discloses an electric vehicle battery management system and method. The system comprises a pipe network, a vehicular control terminal and a cloud computing processing platform, the pipe network comprises air outlet pipes, the vehicular control terminal comprises a main controller, a power supply, a movable transceiver, a vehicular computer, a display, a relay, a current sensor and a slave control unit, and an output end of the vehicular computer is connected with a vehicular air-conditioning control module and an alarm. The method includes the steps: acquiring and uploading electric vehicle battery current data; judging whether an electric vehicle battery is short-circuited or not; calculating the discharged electric quantity of the electric vehicle battery; acquiring the voltage and temperature data of each single battery; regulating the voltage value and the temperature value of each single battery and unloading the values in real time; estimating an SOC (system on chip) value of the single battery; calculating the remaining electric quantity of the electric vehicle battery and displaying and outputting the SOC value and the remaining electric quantity. The optimal working state of the electric vehicle battery is guaranteed, the service life of the electric vehicle battery is prolonged, and safety accidents are prevented.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle battery management, and in particular relates to an electric vehicle battery management system and method. Background technique [0002] In recent years, due to the increasingly serious environmental problems caused by traditional fuel vehicles, countries all over the world are actively looking for a way out and vigorously developing electric vehicles. However, the promotion and popularization of electric vehicles is largely limited by electric vehicle battery technology and its management system. Electric vehicle battery technology and its management system are one of the three core technologies of electric vehicle technology, which determines the mileage and service life of electric vehicles. [0003] Existing electric vehicle batteries are composed of multiple single cells connected in series. Due to the differences in the production process of each single cell, it is difficult to gua...

AI Technical Summary

Problems solved by technology

[0003]Existing electric vehicle batteries are composed of multiple single cells connected in series. Due to the differences in the production process of each single cell, it is difficult to guarantee product consistency. It is the same batch of battery products with similar performance that are shipped from the factory, and there will be differences in charging and discharging over time.

Imbalance between cells can limit the performance of the battery pack as a whole and the entire electric vehicle battery

Images