ELECTRIC MACHINE AND POWER SUPPLY SYSTEM HAVING BATTERY PACK
First Claim
1. An electric machine comprising:
- a driving electric motor;
a battery pack for supplying electric power to the driving electric motor; and
an energy transfer section for transferring an electric energy output from the battery pack to the driving electric motor, wherein;
the battery pack includes;
a first antenna for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source;
at least one secondary battery charged by the electric power received by the first antenna;
an oscillator for producing radio-frequency power by DC power discharged from the secondary battery; and
a second antenna for generating a second resonant magnetic field by the radio-frequency power; and
the energy transfer section includes a third antenna that couples with the second resonant magnetic field generated by the second antenna, thereby transferring the radio-frequency power received by the third antenna to the driving electric motor.
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Accused Products
Abstract
An electric machine and a power supply system, in which a battery pack can be easily and safely replaced with another, and electric power can be transferred with high transfer efficiency. An electric machine of the present invention includes a driving electric motor, a battery pack for supplying electric power to the driving electric motor, and an energy transfer section for transferring electric energy output from the battery pack to the driving electric motor. The battery pack includes a first antenna for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source, at least one secondary battery charged by the electric power received by the first antenna, an oscillator for producing radio-frequency power by DC power discharged from the secondary battery, and a second antenna for generating a second resonant magnetic field by the radio-frequency power. The energy transfer section includes a third antenna that couples with the second resonant magnetic field generated by the second antenna, and transfers the radio-frequency power received by the third antenna to the driving electric motor.
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Citations
21 Claims
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1. An electric machine comprising:
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a driving electric motor; a battery pack for supplying electric power to the driving electric motor; and an energy transfer section for transferring an electric energy output from the battery pack to the driving electric motor, wherein; the battery pack includes; a first antenna for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source; at least one secondary battery charged by the electric power received by the first antenna; an oscillator for producing radio-frequency power by DC power discharged from the secondary battery; and a second antenna for generating a second resonant magnetic field by the radio-frequency power; and the energy transfer section includes a third antenna that couples with the second resonant magnetic field generated by the second antenna, thereby transferring the radio-frequency power received by the third antenna to the driving electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A battery pack comprising:
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a first antenna for receiving electric power from a power supply source located outside by coupling with a first resonant magnetic field generated by the power supply source; at least one secondary battery charged by the electric power received by the first antenna; an oscillator for producing radio-frequency power by DC power discharged from the secondary battery; and a second antenna for generating a second resonant magnetic field by the radio-frequency power and magnetically coupling with a third antenna located outside. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A power supply system comprising:
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a battery pack for supplying electric power to a load; a first energy transfer section for transferring the electric power output from the battery pack to the load; and a second energy transfer section for transferring the electric power supplied from outside to the battery pack, wherein the battery pack includes; a first antenna for receiving electric power by coupling with a first resonant magnetic field generated by the second energy transfer section; at least one secondary battery charged by the electric power received by the first antenna; a first oscillator for producing first radio-frequency power by DC power discharged from the secondary battery; and a second antenna for generating a second resonant magnetic field by the first radio-frequency power; the first energy transfer section includes a third antenna that couples with the second resonant magnetic field generated by the second antenna; the radio-frequency power received by the third antenna is transferred to the load; and the second energy transfer section includes; a second oscillator for producing second radio-frequency power by using the electric power supplied from the outside; and a fourth antenna for generating the first resonant magnetic field by the second radio-frequency power.
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Specification