Battery management and generator control -Lithium - Ion Battery Equipment

Battery management and generator control -Lithium - Ion Battery Equipment

Battery management and generator control

With the development of automotive technology, there are more and more automotive electronic devices and entertainment devices. On the one hand, these electronic systems add to the pressure on the vehicle's energy. Under normal circumstances, in the case of 1kW power consumption, the demand for every 100 kilometers of travel consumes 0.7~1.2L of gasoline. On the other hand, it also makes the failure of the car to start due to the failure of the electronic system to become an important reason for the failure of the car.(Lithium - Ion Battery Equipment)

At the same time, the number of cars continues to grow, and emissions and pollution have become one of the world's biggest concerns. Now Europe has enacted regulations to limit carbon dioxide emissions. According to regulations, from 2012 to 2015, it will be necessary to reduce the CO2 emissions of cars from the current 160 g/km to 120-125 g/km. It is estimated that by 2020, CO2 emissions from cars will not exceed 95 g/km. The rule will make it necessary for automakers to consider reducing carbon dioxide emissions in future vehicle designs or face hefty fines. Therefore, we urgently need to find solutions to reduce carbon dioxide emissions and save energy.

Battery status detection and charge-discharge optimization

The electronic energy management system is adopted, and the battery state monitoring algorithm is integrated into the battery sensor to realize real-time monitoring of the battery state. Therefore, the operation strategy of the battery and sensor can set the important control unit of the control system, and can set the operating range of the battery. Depending on the state of charge of the battery, the battery temperature and the driving conditions of the vehicle, corresponding strategies can be used to control the generator. Charge the battery in time. During this process, the energy supply of the vehicle is in a completely closed-loop control state, which ensures the energy supply of the vehicle, optimizes the energy management of the vehicle, ensures the minimum current required for the engine to restart, and prevents the vehicle from being unable to restart due to battery failure. The problem.

Dynamic Control of Generator Operating Voltage

At the same time, the electronic energy management system can also use the controllable alternator to dynamically change the working voltage setting of the generator to optimize engine torque distribution and vehicle energy management.

Traditional generator control cannot utilize the remaining mechanical energy, and the operating voltage cannot be controlled. When the car is operating during acceleration, with high torque demand, the traditional generator will still consume a lot of engine torque, but the electronic energy management system can dynamically control the operating voltage of the generator to adjust the generator torque demand and optimize the process of the car in operation. Medium torque requirements. When the car is in the acceleration state, the system reduces the working voltage of the generator, thereby reducing the torque requirement of the generator torque, ensuring that the car obtains more energy for acceleration. Conversely, when the car is slowing down, the generator's voltage can be boosted so that the system can use the remaining machinery to charge the battery.

In the case of normal charging and discharging of the battery, if the sensor detects that the battery is in a charged state, the main control unit will adjust the working voltage of the generator accordingly, increase the charging power of the generator, and perform fast charging. When the battery is saturated, reduce the generator voltage, make the generator idle, prevent unnecessary battery overcharge, and reduce torque consumption. This reduces fuel consumption, keeps the state of charge within a safe range, ensures that the battery operates within a benign range, and extends battery life.

in conclusion

To sum up, the electronic energy management system improves the starting performance of the car to a certain extent, ensures the reliable supply of the power supply inside the car, improves the reliability of the electronic system, reduces the fuel consumption, reduces the CO2 emission, and is more and more More and more applied to the development of new cars.



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