Apparatus of controlling solenoid valve, and electric brake system and vehicle including the same

Patent metadata

Field	Value
Publication number	US-2025383030-A1
Application number	US-202418937685-A
Country	US
Kind code	A1
Filing date	Nov 5, 2024
Priority date	Jun 12, 2024
Publication date	Dec 18, 2025
Grant date	—

Abstract

The present disclosure relates to an apparatus for controlling a solenoid valve, and an electronic brake system and a vehicle having the same. The apparatus according to an exemplary embodiment of the present disclosure is an apparatus for controlling a solenoid valve in a vehicle, the apparatus including a switch configured to perform a switching operation on a current of a power supply supplied to a solenoid coil of a solenoid valve according to a driving signal; and a freewheeling circuit connected in parallel to the solenoid coil.

First claim

1 . A apparatus for controlling a solenoid valve in a vehicle, the apparatus comprising:
a switch configured to perform a switching operation on a current of a power supply supplied to a solenoid coil of the solenoid valve according to a driving signal; and a freewheeling circuit connected in parallel to the solenoid coil, wherein the current of the power supply to the freewheeling circuit is blocked when the switch is turned on, wherein the freewheeling circuit comprises a plurality of freewheeling diodes connected in series, and wherein an induced current of the solenoid coil flows through a loop of the solenoid coil and the freewheeling circuit, and the induced current is consumed by the plurality of freewheeling diodes in the freewheeling circuit when the switch is turned off.

2 . The apparatus of claim 1 , wherein the plurality of freewheeling diodes replaces freewheeling resistors in the freewheeling circuit.

3 . The apparatus of claim 1 , wherein a magnetic field is applied to the solenoid coil while the current of the power supply flows through the solenoid coil when the switch is turned on.

4 . The apparatus of claim 3 , wherein the solenoid valve is turned on as the magnetic field is applied, when the switch is turned on.

5 . The apparatus of claim 1 , wherein the magnetic field applied to the solenoid coil is reduced while the induced current is consumed when the switch is turned off.

6 . The apparatus of claim 5 , wherein the solenoid valve is turned off as the magnetic field is reduced when the switch is turned off.

7 . The apparatus of claim 3 , wherein the rate at which the magnetic field is reduced by the plurality of freewheeling diodes increases when the switch is turned off.

8 . The apparatus of claim 1 , wherein the plurality of freewheeling diodes includes a first and a second freewheeling diodes, the first freewheeling diode comprise a first and a second electrodes, and the second freewheeling diode comprises a third and fourth electrodes,
wherein a first end of the solenoid coil is configured to be connected to an end of the switch, and the current from the power supply flows to a second end of the solenoid coil, and wherein the first electrode of the first freewheeling diode is configured to be connected to the fourth electrode of the second freewheeling diode, the third electrode of the second freewheeling diode is configured to be connected to the first end of the solenoid coil, and the second electrode of the first freewheeling diode is configured to be connected to the second end of the solenoid coil.

9 . The apparatus of claim 8 , wherein the first and the third electrodes include anodes and the second and the fourth electrodes include cathodes.

10 . An electronic brake system of a vehicle, the system comprising:
a solenoid valve configured to regulate braking hydraulic pressure; a controller configured to generate a control signal for controlling the solenoid valve; a driver configured to generate a driving signal in accordance with the control signal; a switch configured to perform a switching operation on a current of a power supply supplied to a solenoid coil of the solenoid valve according to the driving signal; and a freewheeling circuit connected in parallel to the solenoid coil, wherein the current of the power supply to the freewheeling circuit is blocked when the switch is turned on, wherein the freewheeling circuit comprises a plurality of freewheeling diodes connected in series, and wherein an induced current of the solenoid coil flows through a loop of the solenoid coil and the freewheeling circuit, and the induced current is consumed by the plurality of freewheeling diodes in the freewheeling circuit when the switch is turned off.

11 . The system of claim 10 , wherein the plurality of freewheeling diodes replaces freewheeling resistors in the freewheeling circuit.

12 . The system of claim 10 , wherein a magnetic field is applied to the solenoid coil while the current of the power supply flows through the solenoid coil when the switch is turned on.

13 . The system of claim 12 , wherein the solenoid valve is turned on as the magnetic field is applied when the switch is turned on.

14 . The system of claim 10 , wherein the magnetic field applied to the solenoid coil is reduced while the induced current is consumed when the switch is turned off.

15 . The system of claim 14 , wherein the solenoid valve is turned off as the magnetic field is reduced when the switch is turned off.

16 . The system of claim 12 , wherein the rate at which the magnetic field is reduced by the plurality of freewheeling diodes increases when the switch is turned off.

17 . The system of claim 10 ,
wherein the plurality of freewheeling diodes includes a first and a second freewheeling diodes, the first freewheeling diode comprise a first and a second electrodes, and the second freewheeling diode comprises a third and fourth electrodes, wherein a first end of the solenoid coil is configured to be connected to an end of the switch, and the current from the power supply flows to a second end of the solenoid coil, and wherein the first electrode of the first freewheeling diode is configured to be connected to the fourth electrode of the second freewheeling diode, the third electrode of the second freewheeling diode is configured to be connected to the first end of the solenoid coil, and the second electrode of the first freewheeling diode is configured to be connected to the second end of the solenoid coil.

18 . A vehicle comprising:
a controller for controlling a solenoid valve, wherein the controller comprises: a switch configured to perform a switching operation on a current of a power supply supplied to a solenoid coil of the solenoid valve according to a driving signal; and a freewheeling circuit connected in parallel to the solenoid coil, wherein the current of the power supply to the freewheeling circuit is blocked when the switch is turned on, wherein the freewheeling circuit comprises a plurality of freewheeling diodes connected in series, and wherein an induced current of the solenoid coil flows through a loop of the solenoid coil and the freewheeling circuit, and the induced current is consumed by the plurality of freewheeling diodes in the freewheeling circuit when the switch is turned off.

19 . The vehicle of claim 18 , wherein the plurality of freewheeling diodes replaces freewheeling resistors in the freewheeling circuit.

20 . The vehicle of claim 18 , wherein a magnetic field is applied to the solenoid coil while the current of the power supply flows through the solenoid coil when the switch is turned on.

Assignees

• Hl Mando Corp

Inventors

• Cho Kyungran

Classifications

• F16K31/0675 Primary

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• B60T15/025 Primary

  Electrically controlled valves · CPC title

• B60T2270/84

  Driver circuits for actuating motor, valve and the like · CPC title

• H01F7/18

  Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings · CPC title

• F16K31/06

  using a magnet {, e.g. diaphragm valves, cutting off by means of a liquid} · CPC title