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US 2014/0177119 A1Published application
Overcurrent protection device, overcurrent protection method, and non-transitory medium
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKazuhiko Ueda
Life of this patent
Estimating the term…
Abstract
An overcurrent protection device includes a fuse element and an auxiliary circuit. Power is applied from a high-voltage unit of a main circuit to the fuse element. The auxiliary circuit includes a component which heats the fuse element. An amount of electric current flowing in the fuse element when the fuse element melts is controlled by heat generated by the component.
Claims17
An overcurrent protection device comprising:
- a fuse element to which power is applied from a high-voltage unit of a main circuit;
- and
- an auxiliary circuit including a component which heats the fuse element, wherein
- an amount of electric current flowing in the fuse element when the fuse element melts is controlled by heat generated by the component.
1 more element
An overcurrent protection device comprising:
- a discharge unit that discharges electric charges of a high-voltage unit of a main circuit;
- a detection unit that detects an energizing current of the discharge unit;
- a first control unit that controls the discharge unit;
- a power supply circuit including a power supply component that supplies power to the first control unit on a basis of power from the high-voltage unit;
- a fuse element to which power is applied from the high-voltage unit of the discharge unit;
- and
- an application unit that performs an application of the power from the high-voltage unit between main terminals of the power supply component so as to heat the fuse element in the case where the detection unit detects the energizing current when the first control unit maintains OFF control of the discharge unit.
4 more elements
An overcurrent protection method comprising:
- a detection step of detecting an energizing current in a discharge resistor when a control unit stops discharge to the discharge resistor, the control unit controlling discharge of electric charges of a high-voltage unit of a main circuit;
- and
- an application step of, when the energizing current has been detected in the detection step, heating a fuse element disposed at a high-voltage side of the discharge resistor by performing an application of power from the high-voltage unit between main terminals of a power supply component, the power supply component supplying power to the control unit on a basis of power from the high-voltage unit.
Dependencies are inferred from the claim text.