Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1994-04-29
1996-08-13
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
336DIG2, H01M 1046
Patent
active
055459668
ABSTRACT:
Heat exchanger that are also outer turns of secondary windings of a transformer for use in a charge port of battery charging apparatus. The outer turns may have any shape or thickness, may be air or liquid cooled, or may be vapor changers (heat pipes). Other turns of the secondary windings cannot be used in this manner because they cause excessive energy dissipation, due to proximity losses. When used to a liquid cooled turn, the present invention comprises porting liquid coolant from a cooling system including a pump, a compact heat exchanger, and a fan through the outer windings. Heat dissipation from the secondary windings of the transformer is efficiently removed by providing an internal coolant flow passage or passages formed or integrated at the center of the outer windings comprising the heat exchangers. The internal passages may be configured in several ways. One approach is to construct thin, flat, self-contained flexible coolant bladders made of metal, such as copper. When applied to an air cooled turn, the present invention directs air from the fan through finned heat exchangers. The of the inner turns secondary windings are bonded directly to the finned heat exchanger turn in order to provide good thermal contact and a large heat transfer area.
REFERENCES:
patent: 5095259 (1992-03-01), Bailey et al.
patent: 5341083 (1994-08-01), Klontz et al.
patent: 5408209 (1995-04-01), Tanzer et al.
patent: 5412304 (1995-05-01), Abbott
Hall John T.
Ramos Sergio
Severns Rudy
Tanzer Herbert J.
Delco Electronics Corp.
Navarre Mark A.
Tso Edward
Wong Peter S.
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