According to foreign media reports, in order to detect the durability, status and actual cruising range of the battery, a relatively complicated battery management system (BMS) is generally used. However, the data of the system is error-prone. Fraunhofer Bavaria electric vehicle research and development center (Fraunhofer R & D Center for Electromobility Bavaria) is developing a cost-effective sensor system, can be integrated directly into the battery, designed to measure the battery power and accuracy to be higher than the current market Battery management system. Insufficient battery management system The battery management system measures the charge of each cell based on current and voltage. Since the current of the system is based on default values, it is prone to errors. For frequent partial charges and specific battery types, it may not be possible to accurately measure the battery's charge value. In addition, the above system will consume a portion of the battery's own power. Ultrasonic pulse detection is more accurate The Fraunhofer Institute for Silence (IS) uses ultrasonic pulses to test the state of charge of the battery. The energy density of the negative electrode changes with the state of charge and discharge of the cell, and the estimated value of the battery power can be directly measured from the parameter. The advantages of this method are many: due to the linear relationship between battery power and measurement signals, the evaluation method is simpler and more accurate. The test unit can monitor several batteries at the same time, and can detect the battery power during charging and discharging without permanent control, saving energy and saving money. Since the ultrasonic signal is directly related to the mechanical properties of the battery core, the aging of the battery material is also taken into account, so that the value of the remaining power is more accurate, thereby more accurately showing the performance of the battery. The new sensor system is suitable for all types of batteries, and lithium-ion batteries are the best. Applications for this equipment include electric vehicles, stationary energy storage systems and drones. The raw materials of the Drum Wood Chipper can be: logs, branches, veneer, scrap veneer, bamboo, cotton and other non-wood fiber stalks, etc.These materials can be cut into wood chips of different specifications at one time.As the production of particleboard, fiberboard, non-wood artificial board and pulp and paper basic raw materials. High efficient wood chipper,High capacity wood crusher,Drum Wood Chipper,Automatic Feeding Wood Chipper Jinan Shanghangda Machinery Co., Ltd. , https://www.jinanshdmachine.com