Patent ID: 7795844
Filing Date: 2010-09-14
Classification: B60K,B60L,B60W,F02N,H01M,H02J,H02M,Y02E,Y02T

Abstract:
1. A power supply system having a plurality of battery units each being rechargeable, and comprising: a power supply line allowing supply and reception of an electric power between a load device and said power supply system; and a plurality of charge/discharge control units arranged between said plurality of battery units and said power line, respectively, and each being capable of controlling charging/discharging of the corresponding battery unit, wherein said plurality of battery units includes at least one first battery unit handled as a temperature management target, and a residual second battery unit, said first battery unit includes a chemical cell having thermal reaction characteristics changing a thermal reaction caused by each of charging and discharging between a heat generating reaction and a heat absorbing reaction depending on a state of charge, and said power supply system further comprises: a temperature obtaining unit obtaining a temperature of said first battery unit; an SOC obtaining unit obtaining a state of charge of said first battery unit; a request producing unit producing one of a heating request and a cooling request for said first battery unit based on the temperature obtained by said temperature obtaining unit; a current direction determining unit determining, for the battery unit corresponding to one of said heating request and said cooling request produced by said request producing unit, in which one of a direction on a charge side and a direction on a discharge side a current is to be passed for responding to one of said heating request and said cooling request based on said thermal reaction characteristics, from the state of charge obtained by said SOC obtaining unit; and a control instruction producing unit providing a control instruction to each of said plurality of charge/discharge control units for passing the current in the direction determined by said current direction determining unit.