Transformerless high voltage and controllable current battery charger for e-car

Abstract

Charger is an important part in e-car. For a massive number of e-cars in the future, battery charger should have characteristics of high efficiency, rapid charging capability, portability, low-cost and compatible with the national standar electricity. In order to cover thus five parameters, the battery charger design should be transformerless, employing buck swith converting method, and having a microprocessor to monitor and control charging voltage and current during charging process. In this paper, we do simulation and experiment with a battery charger prototype, where the input is 220V-50Hz (PLN) and transformerless. To control the charging voltage and current output of buck switch converter, we use a microprocessor circuit. The charging voltage and current of the battery charger are 36-96V DC and 0 s/d 20 A, respectively.

Design of Remote Monitoring Application on Non-Rechargeable Battery Redundant System

“…In this era of continuously evolving technology, remote monitoring has emerged as an innovative and effective solution for monitoring and managing remote areas. Remote areas are often characterized by limited accessibility or physical constraints, and the utilization of remote monitoring technology plays a pivotal role in acquiring real-time data and enabling efficient remote monitoring from a distance [1], [2]. Several sectors where remote monitoring could benefit include Water Gate Monitoring [3], Weather Base Station [4], Sea Level Monitoring [5], and large-scale Solar Panel Monitoring [6].…”

Transformerless SoC-based current control switching battery charger for e-vehicle: design and analysis

“…For instant, battery capacity of 12V 65 Ah battery, if it has CR 13A, it will take about 5 hours to fully charge the battery. For CR 65 A, it will take 1 hour [4]. In general, CR is limited by the internal resistance of the battery at charging state, which is a function of state of charge (SoC).…”