Electric motor for an electric vehicle

Details Electric motor for an electric vehicle Electric motor for an electric vehicle

1995-10-24

1998-09-15

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 55, 310 58, 310 64, 310 60A, 310216, H02K 900

Patent

active

058083871

ABSTRACT:
It is an object of the present invention to provide an electric motor for an electric vehicle with an improved cooling capacity by causing coils wound around a stator to serve as a tubular heat pipe type heat transfer device. An electric motor for an electric vehicle includes a stator 11, coils 12 wound around at least the stator, and a rotor 13 being rotated by an induction field developed around the coils 12. In one embodiment of the invention the coils 12 are formed of a tubular container 121 which is filled with a working fluid which vibrates in an axial direction of a tube by nuclear boiling generated at a high temperature portion of the coils 12. The coils themselves are arranged as a non-looped tubular heat pipe type heat transfer device.

REFERENCES:
patent: 3109947 (1963-11-01), Thompson et al.
patent: 3681628 (1972-08-01), Krastchew
patent: 3715610 (1973-02-01), Brinkman
patent: 3765480 (1973-10-01), Fries
patent: 3801843 (1974-04-01), Corman et al.
patent: 4590993 (1986-05-01), Kurzweg
patent: 4797588 (1989-01-01), Capion
patent: 5140204 (1992-08-01), Cashmore et al.
patent: 5219020 (1993-06-01), Akachi

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