Inverter and vehicle drive unit using the same
First Claim
1. An inverter on board of a vehicle for converting a direct current supplied from a direct current power source to an alternating current for driving a motor on board of said vehicle, wherein:
- said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a switching device and a first and a second wiring layer for connecting said switching device, said first and second wiring layers of said each arm are respectively formed on an insulating substrate and one face of said switching device is fixed to said first wiring layer, said second wiring layer and the other face of said switching device are electrically connected by a laminal conductor, and said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said switching device, and said second connection of said laminal conductor is fixed to said second wiring layer.
3 Assignments
0 Petitions
Accused Products
Abstract
The inverter has a plurality of arms for conducting or cutting off a current and each arm has a switching device and a first and a second wiring layer for connecting the switching device. The first and second wiring layers of each arm are respectively formed on insulating substrates, and one face of the switching device is fixed to the first wiring layer, and the second wiring layer and the other face of the switching device are electrically connected by a laminal conductor, and the laminal conductor has a first and a second connection, and the first connection of the laminal conductor is fixed to the other face of the switching device, and the second connection of the laminal conductor is fixed to the second wiring layer. Thereby, a large current of the inverter can be realized and the assembly capacity of the inverter or the vehicle drive unit will be improved.
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Citations
10 Claims
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1. An inverter on board of a vehicle for converting a direct current supplied from a direct current power source to an alternating current for driving a motor on board of said vehicle, wherein:
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said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a switching device and a first and a second wiring layer for connecting said switching device, said first and second wiring layers of said each arm are respectively formed on an insulating substrate and one face of said switching device is fixed to said first wiring layer, said second wiring layer and the other face of said switching device are electrically connected by a laminal conductor, and said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said switching device, and said second connection of said laminal conductor is fixed to said second wiring layer. - View Dependent Claims (4)
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2. An inverter on board of a vehicle for converting a direct current supplied from a direct current power source to an alternating current for driving a motor on board of said vehicle, wherein:
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said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a switching device and a first and a second wiring layer for connecting said switching device, said first and second wiring layers of said each arm are respectively formed on an insulating substrate and one face of said switching device is fixed to said first wiring layer, said second wiring layer and the other face of said switching device are electrically connected by a laminal conductor, said laminal conductor has a first and a second connection and furthermore forms a stress absorbing portion between said first and second connections, and said first and second connections of said laminal conductor respectively have a connection face having projections, and said connection face having said projections of said first connection of said laminal conductor is fixed to said other face of said switching device, and said connection face having said projections of said second connection of said laminal conductor is fixed to said second wiring layer. - View Dependent Claims (3, 9, 10)
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5. An inverter on board of a vehicle for converting a direct current supplied from a direct current power source to an alternating current for driving a motor on loaded of said vehicle, wherein:
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said inverter has a plurality of arms for conducting and cutting off said current and said each arm has a plurality of switching devices connected in parallel and a first and a second wiring layer for connecting said switching devices, said switching devices of said each arm are installed inside a frame, inside said frame, said first and second wiring layers of said each arm are formed in parallel on an insulating substrate, and said plurality of switching devices connected in parallel on said first wiring layer are arranged in parallel with said second wiring layer, and one face of said each switching device is fixed to said first wiring layer, said second wiring layer and the other face of said each switching device are electrically connected by a laminal conductor, and said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said each switching device, and said second connection of said laminal conductor is fixed to said second wiring layer.
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6. An inverter on board of a vehicle for converting a direct current supplied from a direct current power source to an alternating current for driving a motor on board of said vehicle, wherein:
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said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a plurality of switching devices connected in parallel and a first and a second wiring layer for connecting said switching devices, said inverter has a frame and a distributing board installed on a top of said frame and said distributing board has a laminal conductor for connecting said arms, said switching devices of said each arm are installed inside said frame, inside said frame, said first and second wiring layers of said each arm are formed in parallel on an insulating substrate, and said plurality of switching devices connected in parallel on said first wiring layer are arranged in parallel with said second wiring layer, and one face of said each switching device is fixed to said first wiring layer, a laminal conductor for electrically connecting said second wiring layer and the other face of said each switching device is additionally installed inside said frame, said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said each switching device, and said second connection of said laminal conductor is fixed to said second wiring layer, and said frame has a terminal welded and connected to said laminal conductor for connecting said arms of said distributing board from said frame, and said first and second wiring layers of said arms are electrically connected to said laminal conductor for connecting said arms via said terminal.
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7. A vehicle drive unit comprising a synchronous motor for generating torque for driving wheels of a vehicle and an inverter on board of the vehicle for converting a direct current supplied from a direct current power source to an alternating current supplied to said synchronous motor, wherein:
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said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a plurality of switching devices connected in parallel and a first and a second wiring layer for connecting said switching devices, said switching devices of said each arm are installed inside a frame, inside said frame, said first and second wiring layers of said each arm are formed in parallel on an insulating substrate, and said plurality of switching devices connected in parallel on said first wiring layer are arranged in parallel with said second wiring layer, and one face of said each switching device is fixed to said first wiring layer, said second wiring layer and the other face of said each switching device are electrically connected by a laminal conductor, and said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said each switching device, and said second connection of said laminal conductor is fixed to said second wiring layer.
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8. A vehicle drive unit comprising a synchronous motor for generating torque for traveling of a vehicle and an inverter on board of the vehicle for converting a direct current supplied from a direct current power source to an alternating current supplied to said synchronous motor, wherein:
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said inverter has a plurality of arms for conducting and cutting off the current and said each arm has a plurality of switching devices connected in parallel and a first and a second wiring layer for connecting said switching devices, said inverter has a frame and a distributing board installed on a top of said frame and said distributing board has a laminal conductor for connecting said arms, said switching devices of said each arm are installed inside said frame, inside said frame, said first and second wiring layers of said each arm are formed in parallel on an insulating substrate, and said plurality of switching devices connected in parallel on said first wiring layer are arranged in parallel with said second wiring layer, and one face of said each switching device is fixed to said first wiring layer, a laminal conductor for electrically connecting said second wiring layer and the other face of said each switching device is additionally installed inside said frame, said laminal conductor has a first and a second connection, and said first connection of said laminal conductor is fixed to said other face of said each switching device, and said second connection of said laminal conductor is fixed to said second wiring layer, and said frame has a terminal welded and connected to said laminal conductor for connecting said arms of said distributing board from said frame, and said first and second wiring layers of said arms are electrically connected to said laminal conductor for connecting said arms via said terminal.
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Specification