# US 12,771,262 B2 · Portable AC-DC power converter and on-board power supply management device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,771,262 B2 - Document ID: US12771262B2 - Status: Granted - Kind: B2 - Application number: 18/761,659 - Filed: 2024-07-02 - Published: 2025-01-16 - Granted: 2026-10-20 - Earliest claimed: 2023-07-10 - Assignees: Carrier Corporation - Applicants: Carrier Corporation - Inventors: Jian Tian; Hai Tian; Linhui Chen; Fei Xie - Web page: https://patentgrep.com/patent/US12771262B2 ## CPC - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - B60R 16/033: characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract The present application relates to a portable AC-DC power converter for an on-board refrigeration unit and an on-board power supply management device suitable for use in conjunction with the aforementioned portable AC-DC power converter. A portable AC-DC power converter for on-board electrical equipment according to one aspect of the present application comprises: an AC-DC conversion unit; one or more AC power plugs connected to an input terminal of the AC-DC conversion unit; and one or more connectors connected to an output terminal of the AC-DC conversion unit, wherein the connector comprises a DC output interface and a conductor, where the conductor is configured to short circuit contacts arranged on the refrigeration unit on the vehicle side when the DC output interface is engaged with a DC input interface of an on-board connector to generate a trigger signal to disconnect the on-board electrical equipment from an on-board power source. ## Claims ### Claim 1 A portable AC-DC power converter for on-board electrical equipment, comprising: an AC-DC conversion unit; one or more AC power plugs connected to an input terminal of the AC-DC conversion unit; and one or more connectors connected to an output terminal of the AC-DC conversion unit, wherein the one or more connectors comprises a DC output interface and a conductor physically arranged on the DC output interface, wherein when the DC output interface is engaged with a DC input interface of an on-board connector, the conductor mechanically short-circuits a plurality of contacts arranged on a vehicle side to generate a trigger signal to disconnect the on-board electrical equipment from an on-board power source and wherein the trigger signal is generated independent of detection of an electrical fault condition. ### Claim 2 (depends on 1) The portable AC-DC power converter according to claim 1, wherein the DC output interface comprises: a base; and male terminals or female terminals arranged on the base. ### Claim 3 (depends on 2) The portable AC-DC power converter according to claim 2, wherein the conductor is a metal connecting wire arranged on the base and located between the male terminals or the female terminals. ### Claim 4 (depends on 2) The portable AC-DC power converter according to claim 2, wherein the conductor is a metal connecting wire arranged on the base and located on one side of the male terminals or one side of the female terminals. ### Claim 5 (depends on 3) The portable AC-DC power converter according to claim 3, wherein the metal connecting wire is c-shaped, with its end further away from a surface of the base compared to ends of the male terminals. ### Claim 6 (depends on 1) The portable AC-DC power converter according to claim 1, wherein there are a plurality of AC power plugs. ### Claim 7 (depends on 4) The portable AC-DC power converter according to claim 4, wherein there are a plurality of connectors. ### Claim 8 (depends on 1) An on-board power supply management device suitable for use in conjunction with the portable AC-DC power converter according to claim 1, comprising: an on-board control unit configured to control a connection status between on-board electrical equipment and an on-board power source; an on-board connector, comprising a DC input interface and contacts, wherein the contacts are connected to the on-board control unit, wherein when an DC output interface of the portable AC-DC power converter is engaged with the DC input interface of the on-board connector, the contacts are short circuited through the conductor to generate a trigger signal at the on-board control unit, the on-board control unit disconnects the on-board electrical equipment from the on-board power source in response to the trigger signal. ### Claim 9 (depends on 8) The on-board power supply management device according to claim 8, wherein the on-board control unit is in the form of a printed circuit board. ### Claim 10 (depends on 8) The on-board power supply management device according to claim 8, further comprising: a switch located between the on-board electrical equipment and the on-board power source, wherein the on-board control unit controls a connection status between the on-board electrical equipment and the on-board power source by controlling an on/off state of the switch. ### Claim 11 (depends on 8) The on-board power supply management device according to claim 8, wherein the DC input interface comprises: a base; and female terminals or male terminals arranged on the base. ### Claim 12 (depends on 8) The on-board power supply management device according to claim 8, wherein the on-board electrical equipment is an on-board refrigeration unit. ### Claim 13 (depends on 1) The portable AC-DC power converter of claim 1, wherein the portable AC-DC power converter comprises a plurality of connectors configured to connect to a respective on-board connector arranged on a plurality of vehicles, and wherein in response to the connection of the plurality of connectors with each respective on-board connector, the portable AC-DC power converter is configured to supply power to a respective on-board electrical equipment of the plurality of vehicles. ### Claim 14 (depends on 13) The portable AC-DC power converter of claim 13, wherein the portable AC-DC power converter is configured to simultaneously supply the power to the respective on-board electrical equipment of the plurality of vehicles. ### Claim 15 (depends on 1) The portable AC-DC power converter of claim 1, wherein the one or more connectors press against the contacts arranged on the vehicle to short circuit the contacts. ### Claim 16 (depends on 1) The portable AC-DC power converter of claim 1, wherein a position of the contacts is based on a position of the conductor in the one or more connectors. ### Claim 17 (depends on 8) The on-board power supply management device of claim 8, further comprising a switch located between the on-board electrical equipment and the on-board power source, wherein the on-board control unit is configured to place the switch in a disconnected state in response to the generation of the trigger signal. ### Claim 18 (depends on 8) The on-board power supply management device of claim 8, wherein the on-board control unit is configured to generate a control command, based on the generated trigger signal, to disconnect the on-board electrical equipment from the on-board power source. ### Claim 19 A system comprising: a portable AC-DC converter comprising: an AC-DC conversion unit; an AC power plug connected to an input terminal of the AC-DC conversion unit; and a connector connected to an output terminal of the AC-DC conversion unit, wherein the connector comprises a DC output interface and a conductor physically arranged on the DC output interface; and an on-board power supply management device comprising: an on-board connector comprising a plurality of contacts, wherein the DC output interface is connected to the on-board connector, and wherein the connection of the DC output interface with the on-board connector causes the conductor to mechanically short-circuits the plurality of contacts on the on-board connector; and an on-board control unit configured to generate a trigger signal in response to the mechanical short-circuit of the plurality of contacts to operably connect and/or disconnect an on-board electrical equipment and an on-board power source, and wherein the trigger signal is generated independent of detection of an electrical fault condition. ### Claim 20 (depends on 19) The system of claim 19, wherein the on-board control unit is configured to disconnect the on-board electrical equipment and the on-board power source based on the generation of the trigger signal.