| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a warm-up device of a transmission for an electric automobile, efficiently utilizing a storage battery, reducing viscosity by quickly warming oil in the transmission in start of the electric automobile at low temperature, and surely and sufficiently improving transmission efficiency of energy in the transmission. <P>SOLUTION: The warm-up device 5 heats oil used for the transmission 3 transmitting torque to an axle 4 through the transmission 3 from an electric motor 2 driven by the storage battery 1. The warm-up device 5 includes an oil circulation passage 7 using oil as heat medium and circulating the oil from/to the inside to/from the outside of the transmission 3 by hydraulic pressure of the pump 6, the oil circulation passage 7 has a heat absorption path 8 making oil absorb calories generated in the storage battery 1, and a heat accumulator/radiator 9 is disposed downstream of the heat absorption path to accumulate the calories stored in the oil as latent heat and to radiate the heat when needed. When a core generator 10 is operated, a solid-phase core is generated in a liquid-phase latent heat accumulating material to generate the latent heat and heat oil passing through the heat accumulator/radiator 9, so that the transmission 3 is also heated by the oil. <P>COPYRIGHT: (C)2011,JPO&INPIT |
