Technology: how to keep the energy vehicle electronic devices best
With the development of automobile technology, car electronics Facilities and entertainment facilities is increasing. While these electronic system to increase the pressure of energy for vehicles, general, in the case of power 1kW, driving 100km each needs to consume 0.7 ~ 1.2L of petrol, which are facing increasing shortages of energy situation; other the one hand, makes electronic systems collapse as a result of electric cars can not start the case as the main reason failed to start.
At the same time, the number of cars is increasing, while the emission of pollution has become the world's one of the most concern. At present Europe has issued regulations on the restriction of CO2 emissions, according to regulations, From 2012 to 2015, vehicle CO2 emissions must be reduced from the current 160g/km to 120 ~ 125g/km. 2020, car CO2 emissions will not exceed 95g/km. The law allows manufacturers of automotive design in the future must be considered when reducing CO2 emissions or face heavy fines. Therefore, we now need to seek to reduce CO2 emissions and save energy solutions.
Bosch Automotive Electronics division has been committed to the development of electronic energy management system and matching, electronic energy management system from Bosch battery sensor, controlled alternators and integrated electronic control unit of energy management software and other components.
Battery charge and discharge state detection and optimization
Electronic energy management systems, through the integration of sensors in the battery in the battery status monitoring method can monitor the battery status in due course. Accordingly, in the main control unit can also be set in the battery control systems and sensors work strategies, set the battery's working range, based on the current state of battery charge, battery temperature and traffic conditions, the appropriate strategy can be used control generator. The battery charge time. In this process, the vehicle power supply is fully closed-loop control state, thereby ensuring the vehicle's energy supply, optimizing the vehicle energy management to ensure that the engine re-start the required minimum current to avoid the collapse of batteries caused by power The vehicle can not start the problem again.
Dynamic control of generator voltage
The same time, the electronic energy management system also can be used to dynamically change the controlled alternator voltage generator set, to optimize engine torque distribution and vehicle energy management.
Traditional generator control can not use the extra mechanical energy, operating voltage is not controllable. When the car is running in the acceleration process, the need for high torque, the traditional engine generator will consume more torque, while the electronic energy management system can dynamically control voltage generator to adjust the generator torque demand optimize the vehicle's torque requirements during operation. When the car is accelerating state, the system reduces the operating voltage generator, which reduces the torque generator torque demand, in order to ensure a more energy available to the vehicle speed. On the contrary, when the vehicle is in slow down state, can increase the generator voltage, so the system can use the extra mechanical energy during deceleration to charge the battery.
Battery charge and discharge in the normal situation, if the sensors detect the battery at less charged state, the control unit will correspondingly increase the generator voltage, the charge to improve the efficiency of generators, for fast charging. When the battery is saturated, then the corresponding reduction in the generator voltage, so that generators in the idle state to avoid unnecessary over-charging the battery, thereby reducing the consumption of torque. This can reduce fuel consumption and maintain the level of charge state in the context of security to ensure the battery is healthy interval, extending battery life.
Conclusion
In summary, the electronic energy management system to some extent, improve the startup performance of the vehicle to ensure a reliable supply of power inside the car, to improve the reliability of the electronic system, reducing fuel consumption and reduce CO2 emissions are increasingly used in development of new vehicles. Bosch continues to present the electronic energy management systems for further optimization and new research.
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