Patent ID: 9391502
Filing Date: 2016-07-12
CPC Classification: B60L,H01M,H02J,H02M,Y02E,Y02T

Claim Text:
1. A battery protection device for protecting a battery, said device comprising an electrical circuit arranged to generate or suppress a ripple current through said battery, wherein said electrical circuit comprises: a ripple generator arranged to produce an electrical ripple current; a first ripple injector to be arranged on a positive power line to the battery, said first ripple injector being arranged to transfer said electrical ripple current to said positive power line; a second ripple injector to be arranged on a negative power line to the battery, said second ripple injector being arranged to transfer said electrical ripple current to said negative power line, wherein each of said first and second ripple injectors is a transformer or a capacitor, said first and second injectors being arranged to operate in a differential mode, said battery protection device being arranged to operate in two modes, said modes being: a Battery Management Unit or a central hybrid controller arranged to control in which of the two modes the battery protection device operates and further to control settings of the protection device.