Control method of electronic automobile battery management system (BMS)

Abstract

The invention discloses a control method of an electronic automobile battery management system (BMS). The control method comprises a charge control method; the BMS has a function of receiving a charge connection confirmation signal on a charge plug, and is capable of adopting different control strategies according to the situation that whether an overall controller is in an idle mode or a powered or driving mode. By adopting the system, alarms of two grades can be made to a whole automobile according to abnormal states of a battery pack on the basis of fault severity; in the situation of a second-grade alarm, a motor controller can be operated in a power reduction manner according to available charge/discharge current; in the situation of a first-grade alarm, charging/discharging of a battery is stopped, so that safe use of the power battery can be ensured, and the service life of the power battery can be effectively prolonged.

Description

technical field [0001] The invention relates to the field of electric vehicle batteries. Background technique [0002] With the increasingly serious environmental pollution, the country continues to introduce new energy-saving and emission-reduction policies. With no pollution, zero emissions, low noise, high operation, easy maintenance and strong support from national policies, pure electric light trucks are gradually occupying medium and short-distance transportation. In the urban logistics and transportation market, the life of the power battery is short and the replacement cost is high, which restricts the development of pure electric light trucks. While people are constantly improving the performance of the battery itself, they are also constantly researching and developing the battery management system to give full play to the battery. performance and improve battery efficiency and service life. [0003] The existing battery management system lacks the analysis of the...

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Problems solved by technology

[0002] With the increasingly serious environmental pollution, the country continues to introduce new energy-saving and emission-reduction policies. With no pollution, zero emissions, low noise, high operation, easy maintenance and strong support from national policies, pure electric light trucks are gradually occupying medium and short-distance transportation. In the urban logistics and transportation market, the life of the power battery is short and the replacement cost is high, which restricts the development of pure electric light trucks. While people are constantly improving the performance of the battery itself, they are also constantly researching and developing the battery management system to give full play to the battery. performance and improve battery efficiency and service life

[0003] The existing battery management system lacks the analysis of the working state information of the battery, and timely understanding of the fault information of each battery, and takes corresponding control functions for the battery with fault information

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