Patent ID: 8129952
Filing Date: 2012-03-06
Classification: B60L,H02J,Y02T

Abstract:
1. A battery system comprising: conversion circuitry; a plurality of main terminals configured to be coupled with a load, a charger and a plurality of rechargeable battery modules which are coupled in series with one another intermediate the main terminals; switching circuitry configured to couple a first of the battery modules with an input of the conversion circuitry; the conversion circuitry being configured to receive electrical energy having a first voltage from the first of the battery modules, convert voltage of the received energy from the first voltage to a second voltage, and to output the electrical energy having the second voltage to a second of the battery modules; wherein the conversion circuitry comprises a first converter coupled with the first and second battery modules and a second converter; and wherein the switching circuitry is configured to selectively couple an input of the second converter with a third of the battery modules and to selectively couple an output of the second converter to the first or second of the battery modules during the coupling of the first of the battery modules with an input of the first converter.