Battery electric quantity management system and monitoring method

Abstract

The invention discloses a battery electric quantity management system and a monitoring method. The battery electric quantity management system comprises a monitoring system, a central processing system and a display device, wherein the monitoring system comprises a diverter for detecting the real-time charging and discharging current of a battery; the monitoring system receives a charging and discharging current monitoring signal of the battery and outputs the detection data; the central processing system receives the detection data, performs processing to the detection data and then outputs the calculation result; and the display device receives the calculation result and displays the calculation result. The diverter is used for monitoring the real-time signal of current for calculating the dump energy of the battery, and the calculation result is more accurate, so that a user can accurately grasp the service conditions of the battery.

Description

technical field [0001] The invention belongs to the field of power management systems, and in particular relates to a battery power management system and a monitoring method of an electric vehicle. Background technique [0002] As an environmentally friendly means of transportation, electric vehicles have been widely used in daily life. The battery pack as the power source is the main power of the electric vehicle. We need to keep track of the usage of the power supply at any time, and accurately know the remaining power and cruising range. [0003] The existing battery power management system includes a charging and discharging monitoring system and a central processing system. The charging and discharging monitoring system uses a voltage measuring instrument to dynamically monitor the voltage of a single battery, and the central processing system estimates the remaining power according to the voltage value measured by the monitoring system. Due to differences in battery te...

AI Technical Summary

Problems solved by technology

Due to differences in battery temperature, storage time, and charging times, the power represented by the current voltage is not a unique number. The remaining power estimated based on this voltage is very inaccurate, and the cruising range learned by the user is also inaccurate. Yes, if the user does not charge in time, there may be insufficient power in the middle of the way, which will cause inconvenience to the user; if the user does not follow the display of the remaining power, often charge the battery to prevent the power from running low, so the battery will be damaged due to excessive charging times. More and less service life

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