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SOH (state of health) of the single battery is considered to be an important basis for the maintenance and update of battery-power station. Combined with the changing relationship between the battery discharge voltage and some other factors, such as the discharge current, the discharge capacity, the internal resistance of the battery, and the remaining capacity, a new algorithm that can be used for...
The research on modeling of power battery based on the subspace identification method was conducted. Firstly, an equivalent circuit model of the battery was set up . To identify the parameters of the model, through the acquisition data of the battery's current and voltage, a general state-space model was developed by the subspace identification method. Then by the method of equivalent transformation,...
The designed calibration system for battery management system (BMS) aims to optimize the parameters buried in the BMS. It is embedded into BMS and designed based on CAN calibration protocol (CCP). Consequently, the parameters for algorithms, data acquisition and fault detection can be adjusted through CAN communication on line. It helps to shorten the development period of BMS and improve the industrialization...
Modeling the dynamic characteristics of the battery pack for EV during charge and discharge is an important aspect in the modeling for the battery pack. The dynamic characteristics of the Li-ion battery pack's loaded voltage were analyzed by means of pulsed-charging and pulsed-discharging the battery pack. A mathematic model was produced to describe variation process of the battery pack's loaded voltage...
A battery management system (BMS) based on the CAN-bus was designed for the Li-ion battery pack which consisted of many series-connected battery cells and was distributed dispersedly on the electric vehicle (EV). The BMS consisted of one master module and several sampling modules. The hardware design of the sampling circuit and the CAN expanding circuit was introduced. The strategies of the battery...
The influence of current pulses (approximately 10 3 A.mm -2 for about 20 μs) with different frequencies applied to the drawing process of stainless steel 304L was investigated in this paper. Compared with the conventional process, the tensile strength and the resistivity of the wire have decreased and the plasticity of the wire has been improved with the excitement of the current,...
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