The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
May. 01, 2002
Denso Corporation, Kariya, JP;
Abstract
A lower battery block feeds low-voltage power to a low-voltage load. The lower battery block includes cells. At least one higher battery block is connected in series with the lower battery block, and cooperates with the lower battery block to feed high-voltage power to a high-voltage load. The higher battery block includes cells. A DC—DC converter transmits power from the higher battery block to the lower battery block. A controller detects an electric parameter of the lower battery block which relates to an average per-cell voltage in the lower battery block, and also an electric parameter of the higher battery block which relates to an average per-cell voltage in the higher battery block. The controller operates for controlling the DC—DC converter in response to the detected electric parameters to equalize the average per-cell voltage in the lower battery block and the average per-cell voltage in the higher battery block.