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:
Jan. 18, 2011
Filed:
Oct. 23, 2007
Thomas A. Ward, Moraga, CA (US);
Thomas A. Ward, Moraga, CA (US);
Other;
Abstract
To provide additional charge storage for an electric vehicle, an additional battery () is connected in parallel with a regenerative braking direct charged battery () through a current limiting circuit (or). The additional battery () is charged by an external charger such as a plug-in charger or a solar panel that supply minimal current to prevent generation of battery heat. Current flows from the additional battery () to the regenerative braking charged batteries () so that both batteries can be charged. However, when excessive charge is drawn to drive the vehicle electric motor (), the current limiter circuit (or) serves to prevent the discharge of additional battery () from creating excessive heat in the additional battery (). Further, when regenerative braking is applied the current limiter circuit (), or a diode buffer () in combination with current limiter (), serves to prevent charging from creating excessive heat in the additional battery () and eliminates the need for a cooling structure in the additional battery ().