# US 12,763,597 B2 · Power supply system, and control method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,597 B2 - Document ID: US12763597B2 - Status: Granted - Kind: B2 - Application number: 19/062,516 - Filed: 2025-02-25 - Published: 2025-06-12 - Granted: 2026-10-13 - Earliest claimed: 2022-08-31 - Assignees: Yinwang Intelligent Technologies Co., Ltd. - Applicants: Yinwang Intelligent Technologies Co., Ltd. - Inventors: Qing Gao; Xin Liu - Web page: https://patentgrep.com/patent/US12763597B2 ## CPC - H02J 9/06: with automatic change-over {, e.g. UPS systems} - B60R 16/03: for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)} - H02J 2105/30: the load networks being external to vehicles, i.e. exchanging power with vehicles - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract This application relates to a power supply system, and a control method and apparatus. The power supply system includes a first power supply circuit, a second power supply circuit, and a controller. A first power supply and a load are connected through the first power supply circuit; a second power supply and the load are connected through the second power supply circuit; and the controller is connected to the first power supply circuit and the second power supply circuit, and controls the first power supply circuit and/or the second power supply circuit to be connected. An output current of the first power supply circuit is a first current when the first power supply circuit is connected, and an output current of the second power supply circuit is a second current when the second power supply circuit is connected. The first current is less than the second current. ## Claims ### Claim 1 A power supply system, comprising: a first power supply circuit connected to a first power supply and a load; a second power supply circuit connected to a second power supply and the load; a detection and hold control circuit connected to the first power supply, the second power supply, and the load; and a controller connected to the detection and hold control circuit, the first power supply circuit, and the second power supply circuit, wherein the controller controls the first power supply circuit and/or the second power supply circuit to be connected to the load; an output current of the first power supply circuit is a first current when the first power supply circuit is connected; an output current of the second power supply circuit is a second current when the second power supply circuit is connected and the first current is less than the second current; the detection and hold control circuit sends a first wake-up signal to the controller and the second power supply circuit when detecting that the first current is greater than or equal to a first threshold; the controller enters a working state when receiving the first wake-up signal and sends a first hibernation signal to the first power supply circuit; the first power supply circuit is disconnected when receiving the first hibernation signal; and the second power supply circuit is connected to the load when receiving the first wake-up signal. ### Claim 2 (depends on 1) The power supply system according to claim 1, wherein the detection and hold control circuit comprises: a sampling resistor; and a voltage comparator, wherein a first end of the sampling resistor is connected to the first power supply circuit and a first end of the voltage comparator; a second end of the sampling resistor is connected to the load and a second end of the voltage comparator; and a third end of the voltage comparator is connected to the controller and the second power supply circuit; and the voltage comparator: obtains a first voltage at the first end of the sampling resistor and a second voltage at the second end of the sampling resistor; determines a voltage difference between the first voltage and the second voltage; determines the first current based on the voltage difference and a resistance value of the sampling resistor; and outputs the first wake-up signal to the controller and the second power supply circuit when the first current is greater than or equal to the first threshold. ### Claim 3 (depends on 1) The power supply system according to claim 1, wherein, when the controller enters a working state when receiving the first wake-up signal, the controller sends a second wake-up signal to the second power supply circuit; and the second power supply circuit is connected to the load when receiving the second wake-up signal. ### Claim 4 (depends on 3) The power supply system according to claim 3, wherein the detection and hold control circuit comprises: a sampling resistor; and a voltage comparator, wherein a first end of the sampling resistor is connected to the first power supply circuit and a first end of the voltage comparator; a second end of the sampling resistor is connected to the load and a second end of the voltage comparator; and a third end of the voltage comparator is connected to the controller; and the voltage comparator: obtains a first voltage at the first end of the sampling resistor and a second voltage at the second end of the sampling resistor; determines a voltage difference between the first voltage and the second voltage; determines the first current based on the voltage difference and a resistance value of the sampling resistor; and outputs the first wake-up signal to the controller when the first current is greater than or equal to the first threshold. ### Claim 5 (depends on 1) The power supply system according to claim 1, wherein when receiving a second hibernation signal from outside the power supply system, the controller sends a third wake-up signal to the first power supply circuit and a third hibernation signal to the second power supply circuit and enters a hibernation state; the first power supply circuit is connected to the load when receiving the third wake-up signal; and the second power supply circuit is disconnected from the load when receiving the third hibernation signal. ### Claim 6 (depends on 1) The power supply system according to claim 1, wherein the first power supply and the second power supply are different power supplies. ### Claim 7 (depends on 1) The power supply system according to claim 1, wherein the first power supply circuit comprises at least one of: a metal-oxide-semiconductor field-effect transistor; a triode; a passive switch; or a relay; and the second power supply circuit comprises a high-side driver. ### Claim 8 (depends on 7) The power supply system according to claim 7, wherein the second power supply circuit further comprises an “OR” circuit, wherein a first input end and a second input end of the “OR” circuit are respectively configured to receive the first wake-up signal and a second wake-up signal; and an output end of the “OR” circuit is connected to the high-side driver; or the second power supply circuit further comprises: a first diode; and a second diode, wherein one end of the first diode receives the first wake-up signal; another end of the first diode is connected to the high-side driver; one end of the second diode receives the second wake-up signal; and another end of the second diode is connected to the high-side driver. ### Claim 9 (depends on 1) The power supply system according to claim 1, wherein the detection and hold control circuit comprises: a first sampling resistor; a second sampling resistor; and a triode, wherein a first end of the first sampling resistor is connected to the first power supply circuit and a first end of the second sampling resistor; a second end of the first sampling resistor is connected to the load and a base of the triode; a second end of the second sampling resistor is connected to an emitter of the triode; and a collector of the triode is connected to the controller and the second power supply circuit. ### Claim 10 (depends on 9) The power supply system according to claim 9, wherein the collector of the triode is further connected to the first end of the second sampling resistor through a capacitor. ### Claim 11 (depends on 8) The power supply system according to claim 8, wherein the triode is an NPN-type triode. ### Claim 12 A vehicle, wherein the vehicle comprises: a first power supply; a second power supply; a load; and a power supply system, comprising: a first power supply circuit connected to the first power supply and the load; a second power supply circuit connected to the second power supply and the load; a detection and hold control circuit connected to the first power supply, the second power supply, and the load; and a controller connected to the detection and hold control circuit, the first power supply circuit, and the second power supply circuit, wherein the controller controls the first power supply circuit and/or the second power supply circuit to be connected to the load; an output current of the first power supply circuit is a first current when the first power supply circuit is connected; an output current of the second power supply circuit is a second current when the second power supply circuit is connected and the first current is less than the second current; the detection and hold control circuit sends a first wake-up signal to the controller and the second power supply circuit when detecting that the first current is greater than or equal to a first threshold; the controller enters a working state when receiving the first wake-up signal and sends a first hibernation signal to the first power supply circuit; the first power supply circuit is disconnected when receiving the first hibernation signal; and the second power supply circuit is connected to the load when receiving the first wake-up signal. ### Claim 13 (depends on 12) The vehicle according to claim 12, wherein the detection and hold control circuit comprises: a sampling resistor; and a voltage comparator, wherein a first end of the sampling resistor is connected to the first power supply circuit and a first end of the voltage comparator; a second end of the sampling resistor is connected to the load and a second end of the voltage comparator; and a third end of the voltage comparator is connected to the controller and the second power supply circuit; and the voltage comparator: obtains a first voltage at the first end of the sampling resistor and a second voltage at the second end of the sampling resistor; determines a voltage difference between the first voltage and the second voltage; determines the first current based on the voltage difference and a resistance value of the sampling resistor; and outputs the first wake-up signal to the controller and the second power supply circuit when the first current is greater than or equal to the first threshold. ### Claim 14 (depends on 12) The vehicle according to claim 12, wherein, when the controller enters a working state when receiving the first wake-up signal, the controller sends a second wake-up signal to the second power supply circuit; and the second power supply circuit is connected to the load when receiving the second wake-up signal. ### Claim 15 (depends on 14) The vehicle according to claim 14, wherein the detection and hold control circuit comprises: a sampling resistor; and a voltage comparator, wherein a first end of the sampling resistor is connected to the first power supply circuit and a first end of the voltage comparator; a second end of the sampling resistor is connected to the load and a second end of the voltage comparator; and a third end of the voltage comparator is connected to the controller; and the voltage comparator: obtains a first voltage at the first end of the sampling resistor and a second voltage at the second end of the sampling resistor; determines a voltage difference between the first voltage and the second voltage; determines the first current based on the voltage difference and a resistance value of the sampling resistor; and outputs the first wake-up signal to the controller when the first current is greater than or equal to the first threshold. ### Claim 16 (depends on 12) The vehicle according to claim 12, wherein when receiving a second hibernation signal from outside the power supply system, the controller sends a third wake-up signal to the first power supply circuit and a third hibernation signal to the second power supply circuit and enters a hibernation state; the first power supply circuit is connected to the load when receiving the third wake-up signal; and the second power supply circuit is disconnected from the load when receiving the third hibernation signal. ### Claim 17 (depends on 12) The vehicle according to claim 12, wherein the first power supply and the second power supply are different power supplies.