# US 2025/0157751 A1 · Power switching device

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- Number: US 2025/0157751 A1
- Document ID: US20250157751A1
- Status: Published application
- Kind: A1
- Application number: 18/922,961
- Filed: 2024-10-22
- Published: 2025-05-15
- Earliest claimed: 2023-11-13
- Assignees: OMRON Corporation
- Applicants: OMRON Corporation
- Inventors: Katsumi MATSUSHITA; Kenichi TABATA; Yoshiki FUKUTA
- Web page: https://patentgrep.com/patent/US20250157751A1

## CPC

- H01H 9/52: Cooling of switch parts (cooling of contacts H01H1/62)
- H01H 9/02: Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B1/26)
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A power switch including a communication unit communicably connected to an external device, a relay that opens and closes a power line supplying electric power from a power source to a load, a control unit that controls the relay based on information received from the external device via the communication unit, and a housing that accommodates the communication unit, the relay, and the control unit. The housing includes a first chamber and a second chamber separated from the first chamber by a partition wall, a first substrate mounted with the relay and constituting a part of the power line is disposed in the first chamber, and a second substrate including the communication unit and at least a part of the control unit and being connected to the first substrate is disposed in the second chamber.

## Claims

### Claim 1

A power switch comprising:
a communication unit communicably connected to an external device;
a relay configured to open and close a power line supplying electric power from a power source to a load;
a control unit configured to control the relay based on information received from the external device via the communication unit; and
a housing configured to accommodate the communication unit, the relay, and the control unit,
wherein the housing includes a first chamber and a second chamber separated from the first chamber by a partition wall,
the first chamber is disposed with a first substrate, the first substrate being mounted with the relay and constituting a part of the power line, and
the second chamber is disposed with a second substrate, the second substrate including the communication unit and at least a part of the control unit and being connected to the first substrate.

### Claim 2 (depends on 1)

The power switch according to claim 1,
wherein the first chamber includes a hollow interior of the housing, and
the second chamber includes a recessed portion recessed from an outside toward the hollow interior and opened toward the outside in the housing.

### Claim 3 (depends on 2)

The power switch according to claim 2,
wherein the housing includes
a first housing portion in which the first substrate is disposed, and
a second housing portion including the recessed portion, and
the first housing portion and the second housing portion form the first chamber.

### Claim 4 (depends on 2)

The power switch according to claim 2, further comprising
a lid portion covering an opening of the recessed portion, and
a thermal conductive member being provided between the lid portion and the second substrate and transferring heat from the second substrate to the lid portion.

### Claim 5 (depends on 1)

The power switch according to claim 1, wherein the first substrate includes a bus bar constituting a part of the power line.