20kwh energy storage battery.Introduction to management system knowledge of new energy vehicle batteries

　　New energy vehicles are now the focus of people's choice of cars, and energy management is the core function of new energy vehicles. In the management system of new energy vehicle batteries, the torque demand put forward by the vehicle must go through the energy management module. According to the different vehicle power hybrid methods, components, and strategies, the energy demand is reasonably allocated to different drive systems. Today I will give What you are introducing is the knowledge introduction to the management system of new energy vehicle batteries. Let’s take a look with the editor.

　　New energy vehicle battery management system: definition

　　The new energy vehicle energy management system is a software and hardware system that coordinates, distributes and controls the working energy of the power system energy conversion device.

　　The hardware of the energy management system consists of sensors, control units (ECUs), and actuators. The function of the software system is mainly to analyze and process the sensor signals, optimize and analyze the working status of the energy conversion device, and issue instructions to the actuators to control its actions.

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　　New energy vehicle battery management system: composition

　　Different types of new energy vehicles have different energy conversion systems, so their energy management software and hardware system devices have different compositions. Taking pure electric vehicles as an example, the basic components of the energy management system of pure electric vehicles include: battery input controller, vehicle operating status parameters, vehicle control status, energy management system ECU, battery output controller, motor power generation system, etc.

　　The parameters input to the electronic control unit ECU of the energy management system include the status parameters of each battery pack (such as operating voltage, discharge current and battery temperature, etc.), vehicle operating status parameters (such as driving speed, motor power, etc.) and vehicle control status (such as braking). (moving, starting, accelerating and decelerating, etc.), etc. The energy management system has the function of real-time display of detected status parameters. The ECU infers and calculates the detected status parameters according to a predetermined algorithm, and issues appropriate control and display instructions to the battery, motor, etc., to achieve optimal management and control of battery energy.

　　New energy vehicle battery management system: introduction

　　1.State of charge indicator

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　　The state-of-charge indicator is similar to the fuel gauge of a fuel vehicle and represents the energy stored in the battery of an electric vehicle and its driving range.

　　2. Battery Management System (BMS)

　　The battery management system is a subsystem of the energy management system that detects and estimates battery status in real time to provide optimal use of the battery pack. According to Dr. Bao Wei, president of Ligao Research Institute, the battery management system is generally divided into two parts, namely the host machine and the slave machine. The slave machine mainly collects voltage and current, and the host machine mainly completes the calculation of SOC, SOH, SOP and high-voltage Circuit control, thermal management, equalization and other controls.

　　The main tasks of the battery management system are: preventing overcharge, preventing over-discharge, temperature control and balance, energy system information prompts, battery status testing and display, etc.

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