Inductive coupling apparatus for charging an electric car

Electricity: battery or capacitor charging or discharging – Cell or battery charger structure – Charger inductively coupled to cell or battery

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336 60, 336196, H02J 700, H01F 2708

Patent

active

059295996

ABSTRACT:
An inductive coupling apparatus charges a storage device in an electric car by means of an external power source apparatus. The inductive coupling apparatus includes a coil unit assembly comprising a primary coil unit (10) and a secondary coil unit (20). The primary and secondary coil units (10, 20) comprise primary and secondary coils (12, 22) and primary and secondary cores (11, 21) for supporting the respective coils (12, 22). Spacers (13, 23) are mounted on arms (11A, 21A) of the cores (11, 21) of the units (10, 20) so that the coils (12, 22) are spaced apart from the peripheral surfaces of the arms (11A, 21A), thereby forming gaps (11D, 21D) between the arms (11A, 21A) and the coils (12, 22) to flow a cooling medium such as air therebetween. When the coils (12, 22) radiate a heat upon charging, the cooling media which flow in the gaps (11D, 21D) absorb the heat from the cores (11, 21). This prevents the heat from being accumulated in spaces between the cores (11, 21) and the coils (12, 22) and suppresses the cores (11, 21) from a rise in temperature.

REFERENCES:
patent: 5408209 (1995-04-01), Tanzer et al.
patent: 5412304 (1995-05-01), Abbott

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