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US 12,146,360 B2Granted
Sliding door driving device
AssigneeMitsui Kinzoku Act Corporation
InventorTakuya Imai
Life of this patent
Estimating the term…
Abstract
A sliding door driving device includes: a power source; a motor that outputs power to open and close the door; a motor driving circuit that connects the power source and the motor to each other; and a motor control device that controls the motor driving circuit. The motor control device includes an inverter that converts DC power supplied from the power source into AC power, and a shunt resistor disposed between the power source and the inverter. The position detection unit of the motor control device obtains the rotation angle of the motor based on the output of the shunt resistor.
Claims10
A sliding door driving device comprising:
- a power source;
- a motor configured to output power to open and close the sliding door;
- a motor driving circuit that connects the power source and the motor to each other;
- and
- a control device configured to control the motor driving circuit,
- wherein the motor driving circuit comprises:
- a power conversion device configured to convert DC power supplied from the power source into AC power;
- and
- a shunt resistor disposed between the power source and the power conversion device, and
- wherein the control device obtains a rotation angle of the motor based a voltage generated in the shunt resistor by the current flowing through the power conversion device,
- wherein the motor driving circuit comprises a switch that is disposed between a positive electrode side of the power source and a positive electrode side of the power conversion device and is configured to open and close a power transmission path between the power source and the power conversion device,
- wherein the power conversion device comprises:
- a first branch circuit comprising a first high-side transistor, a first low-side transistor, and a first node that connects the first high-side transistor and the first low-side transistor to each other in series;
- a second branch circuit comprising a second high-side transistor, a second low-side transistor, and a second node that connects the second high-side transistor and the second low-side transistor to each other in series;
- a third branch circuit comprising a third high-side transistor, a third low-side transistor, and a third node that connects the third high-side transistor and the third low-side transistor to each other in series;
- and
- a fourth node and a fifth node that connect the first branch circuit, the second branch circuit, and the third branch circuit to each other in parallel,
- wherein the motor is a three-phase AC motor in which a stator coil is delta-connected to the first node, the second node, and the third node,
- wherein the power source is connected to the fourth node and the fifth node, and
- wherein the control device is configured to execute a first brake control comprising:
- setting the switch to be in an open state in a case where the output of the shunt resistor reaches a first predetermined value when the motor is not driven;
- and
- setting the first high-side transistor, the second high-side transistor, and the third high-side transistor to be in an open state, and setting at least one of the first low-side transistor, the second low-side transistor, and the third low-side transistor to be in a closed state, or
- setting the first low-side transistor, the second low-side transistor, and the third low-side transistor to be in an open state, and setting at least one of the first high-side transistor, the second high-side transistor, and the third high-side transistor to be in a closed state.
21 more elements
A sliding door driving device comprising:
- a power source;
- a motor configured to output power to open and close the sliding door;
- a motor driving circuit that connects the power source and the motor to each other;
- and
- a control device configured to control the motor driving circuit,
- wherein the motor driving circuit comprises:
- a power conversion device configured to convert DC power supplied from the power source into AC power;
- and
- a shunt resistor disposed between the power source and the power conversion device, and
- wherein the control device obtains a rotation angle of the motor based a voltage generated in the shunt resistor by the current flowing through the power conversion device,
- wherein the motor driving circuit comprises a switch that is disposed between a positive electrode side of the power source and a positive electrode side of the power conversion device and is configured to open and close a power transmission path between the power source and the power conversion device, and
- wherein the control device is configured to execute a first brake control for driving the motor in a direction of restricting movement of the sliding door in the closed state of the switch in a case where the output of the shunt resistor reaches a third predetermined value when the motor is not driven.
9 more elements
A sliding door driving device comprising:
- a power source;
- a motor configured to output power to open and close the sliding door;
- a motor driving circuit that connects the power source and the motor to each other;
- and
- a control device configured to control the motor driving circuit,
- wherein the motor driving circuit comprises:
- a power conversion device configured to convert DC power supplied from the power source into AC power;
- and
- a shunt resistor disposed between the power source and the power conversion device, and
- wherein the control device obtains a rotation angle of the motor based a voltage generated in the shunt resistor by the current flowing through the power conversion device,
- wherein the motor driving circuit comprises a switch that is disposed between a positive electrode side of the power source and a positive electrode side of the power conversion device and is configured to open and close a power transmission path between the power source and the power conversion device,
- wherein the power conversion device comprises:
- a first branch circuit comprising a first high-side transistor, a first low-side transistor, and a first node that connects the first high-side transistor and the first low-side transistor to each other in series;
- a second branch circuit comprising a second high-side transistor, a second low-side transistor, and a second node that connects the second high-side transistor and the second low-side transistor to each other in series;
- a third branch circuit comprising a third high-side transistor, a third low-side transistor, and a third node that connects the third high-side transistor and the third low-side transistor to each other in series;
- and
- a fourth node and a fifth node that connect the first branch circuit, the second branch circuit, and the third branch circuit to each other in parallel,
- wherein the motor is a three-phase AC motor in which a stator coil is delta-connected to the first node, the second node, and the third node,
- wherein the power source is connected to the fourth node and the fifth node,
- wherein when the motor is not driven, the control device is configured to:
- in a case where the output of the shunt resistor reaches a first predetermined value, execute a first brake control comprising charging the power source in a closed state of the switch;
- in a case where the output of the shunt resistor reaches a second predetermined value, execute a second brake control comprising:
- setting the switch to be in an open state;
- and
- setting the first high-side transistor, the second high-side transistor, and the third high-side transistor to be in an open state, and setting at least one of the first low-side transistor, the second low-side transistor, and the third low-side transistor to be in a closed state, or
- setting the first low-side transistor, the second low-side transistor, and the third low-side transistor to be in an open state, and setting at least one of the first high-side transistor, the second high-side transistor, and the third high-side transistor to be in a closed state;
- and
- in a case where the output of the shunt resistor reaches a third predetermined value, execute a third brake control comprising driving the motor in a direction of restricting movement of the sliding door in a closed state of the switch,
- wherein a holding force of the sliding door in the second brake control is higher than a holding force of the sliding door in the first brake control, and
- wherein a holding force of the sliding door in the third brake control is higher than a holding force of the sliding door in the second brake control.
27 more elements
Dependencies are inferred from the claim text.