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Battery Charge Regulator (BCR) is needed for the solar power system generation. But the battery is often easily damaged due to the excessive charging current and the high temperature. This may the effect of the solar panel voltage being fluctuating and the fickle battery condition. Therefore it is necessary to manufacture BCR with constand current, the excessive voltage, and perform charging at a safe temperature. In this research BCR was made with constant current charging method. Current control is done using the MOSFET switching technique. In order to a constant current, closed loop control is used with a current sensor as a feedback sensor. The duty cycle of switching is regulated through a microcontroller based on the current read by the sensor. In addition, a temperature sensor and a voltage sensor are used as a feedback sensor so that charging runs safely. The results of the experiment show success withthe constantly maintained current at 1.5 A and 2 A. The battery temperature is lower than 40°C. The charge voltage is lower than 14.7 V. And the battery voltage is lower than 13.8 V.

LiFePO4 battery LOC (life Of Charge) is the assessment of the ability to work within a cycle of battery charge and discharge period, which likes the miles for vehicle. LOC is related with battery capacity, working condition and stress. LOC consists of the model of the battery’s SOC online prediction model, the analysis of RBSOC and the LOC model of multi-condition and multi-stress.

Regenerative Anti-lock Braking System (ABS) is a braking system in vehicle electric (electric vehicle) which can prevent locking on vehicle wheel and do recovery kinetic energy braking into a battery charge. In this paper, regenerative ABS applied in quarter car model approach. Regenerative ABS had many components in it one of them is a sensor. The sensor fault can reduce the safety level of the regenerative ABS. In this paper, Active Fault Tolerant Control (AFTC) scheme is applied to ABS regenerative ABS to accommodate the wheel speed sensor fault to improve system performance. Sliding Mode Controller is used in this regenerative ABS controller with k and epsilon (ɛ) gain parameters 10 and 3 with a maximum overshoot of 18.95%, error steady state 0% and settling time of 0.08 seconds. Then, the AFTC algorithm works by using the residual calculation result (fs^) as the compensation value of the measurement signal. From the results of the response test after being applied the bias and sensitivity fault, the system that equipped with AFTC algorithm able to overcome the sensor fault up to 100%.

Lithium-ion battery charge state of the accurate and rapid estimation of battery management system is the key technology. In this paper, an exponentially reaching law sliding-mode variable structure control algorithm based on Kalman filter is proposed to estimate the state of charge of Li-ion battery for the dynamic nonlinear system. The RC equivalent circuit model is established, and the model equation with specific structure is given. The proposed Kalman filter sliding mode structure is used to estimate the state of charge of the battery in the battery model, and the jitter effect can be avoided and the estimation performance can be improved. The simulation results show that the proposed Kalman filter sliding mode control has good accuracy in estimating the state of charge of the battery compared with the ordinary Kalman filter, and the error range is within 3%.

Pulse width modulation (PWM) based (a non-consistent) breaking system is used to keep the wheels from being bolted in the proposed antilock breaking system (ABS). Using this method a better hold of the street by wheels is possible and halting separations likewise diminish essentially particularly on precarious street surfaces like frosty or wet streets. The active vitality of the wheel is by and large lost amid braking as warmth because of grinding among brake cushions. This vitality can be recuperated using regenerative braking systems (RBS). In this strategy, the overabundance vitality is put away incidentally in capacitor banks before it gets changed over to warm vitality and is squandered. This framework delays the battery life by reviving the battery utilizing the put away vitality. Subsequently the mileage of the electric vehicle likewise increments as it can travel more separation in a solitary battery charge. These two techniques together help make electric vehicle vitality productive and more secure and less demanding to utilize subsequently anticipating and diminishing the quantity of mischance’s.