Intelligent charging method for storage battery of new energy electric vehicle

Abstract

The invention discloses an intelligent charging method for a storage battery of a new energy electric vehicle, which comprises the following steps that when a BMS has no fault, an internal network continuously runs and monitors the voltage of the storage battery in real time, when the voltage of the storage battery is lower than a set threshold value, it is judged that charging is needed, the BMS sends an intelligent charging request to a VCU, and the VCU controls the whole vehicle to be powered on and then charges the storage battery. The method has the advantages that the BMS is adopted to monitor the voltage of the storage battery in real time, the used hardware is vehicle-mounted hardware, the hardware cost is not increased, and the BMS works in an intranet environment, is low in power consumption and is safe and reliable; the BMS can monitor the voltage of the storage battery in real time and can automatically charge the storage battery, so that the reliability of the electric quantity of the storage battery is ensured; if the BMS breaks down and cannot automatically monitor the voltage of the storage battery, a reminding signal is forwarded to a mobile phone terminal of a vehicle owner through the TSP, and the purpose of real-time reminding is achieved.

Description

technical field [0001] The invention relates to the field of electric vehicle batteries, in particular to a method for intelligently replenishing power for new energy electric vehicle batteries. Background technique [0002] With the popularization of electric vehicles, the market often has the problem that the 12V low-voltage battery of electric vehicles is fed and the vehicle cannot be started. Although most vehicles have the function of regularly monitoring and replenishing power to the 12V low-voltage battery, there are still some failure modes, such as: the user uses the vehicle in a low-voltage state for a long time, which will cause the 12V low-voltage battery to feed power, and some controllers need to If you wake up regularly and work for a long time, it will consume a lot of 12V low-voltage battery power. Timing wake-up power supply technology cannot meet the special requirements of maintenance-free batteries, and it is easy to cause overcharging and undercharging...

AI Technical Summary

Problems solved by technology

[0002] With the popularization of electric vehicles, the market often has the problem that the 12V low-voltage battery feed of electric vehicles causes the vehicle to fail to start.

Although most vehicles have the function of regularly monitoring and replenishing power to the 12V low-voltage battery, there are still some failure modes, such as: the user uses the vehicle in a low-voltage state for a long time, which will cause the 12V low-voltage battery to feed power, and some controllers need to Wake up regularly and work for a long time, it will consume a lot of 12V low-voltage battery power

Timing wake-up power supply technology cannot meet the special requirements of maintenance-free batteries, and it is easy to cause overcharging and undercharging of the battery, making it difficult for the battery to reach the specified cycle life; if the power of the small battery is too low, it will affect the electronic control system of the electric vehicle. Normal operation, affecting the start of electric vehicles and reducing the stability of the vehicle

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