# US 12,763,579 B2 · Power conversion device for an electric vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,579 B2 - Document ID: US12763579B2 - Status: Granted - Kind: B2 - Application number: 19/053,321 - Filed: 2025-02-13 - Published: 2025-06-05 - Granted: 2026-10-13 - Earliest claimed: 2022-10-12 - Assignees: Lite-On Technology Corporation - Applicants: LITE-ON Technology Corporation - Inventors: Lam Vu; Yi-Chao Fan; Chih-Yu Kuo - Web page: https://patentgrep.com/patent/US12763579B2 ## CPC - H02J 3/322: {the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging} - B60L 53/22: Constructional details or arrangements of charging converters specially adapted for charging electric vehicles - B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements - H02M 1/0067: {Converter structures employing plural converter units, other than for parallel operation of the units on a single load} - H02M 1/36: Means for starting or stopping converters - H02M 7/797: using semiconductor devices only - B60L 2210/10: DC to DC converters - B60L 2210/40: DC to AC converters - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - 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) ## Abstract A power conversion device used in electric vehicles includes a transmission assembly and a power converter. The transmission assembly is detachably connected to the electric vehicle and receives a first power from the battery pack of the electric vehicle. The power converter is electrically connected to the transmission assembly and converts the first power into a second power or a third power. The power converter is configured outside the electric vehicle. ## Claims ### Claim 1 A power conversion device, comprising: a first converter converting a first power into a second power; a power storage electrically connected to the first converter and receiving the second power; a second converter electrically connected to the power storage and a power grid, wherein the second converter receives the second power form the power storage and converts the second power into a third power; and a control circuit electrically connected to the first converter, the power storage and the second converter, a first measurement device installed between the second converter and the power grid, wherein the first measurement device transmits a power supply status and power usage information of the power grid to the control circuit or the second converter, and the second converter provides the third power to the power grid when a power supply frequency of the power grid drops; wherein the second converter stops transmitting the third power to the power grid in response to the power grid is out of power. ### Claim 2 (depends on 1) The power conversion device according to claim 1, wherein the first power is a direct current, the second power is a direct current, and the third power is an alternating current. ### Claim 3 (depends on 1) The power conversion device according to claim 1, wherein the first converter receives the first power from a battery pack of an electric vehicle. ### Claim 4 (depends on 1) The power conversion device according to claim 1, further comprising a switching module which is electrically connected to the first converter, the second converter and the control circuit, wherein the switching module is controlled by the control circuit to electrically connect to the first converter or the second converter according to a command. ### Claim 5 (depends on 4) The power conversion device according to claim 4, wherein the command is issued by a user through an operating interface, or issued from a non-transitory data storage media or a computing device. ### Claim 6 (depends on 1) The power conversion device according to claim 1, wherein the second converter is a grid-tie inverter. ### Claim 7 A power conversion device for an electric vehicle, comprising: a transmission assembly detachably connected to the electric vehicle and receiving a first power from a battery pack of the electric vehicle; and a power converter electrically connected to the transmission assembly and having a first converter, a power storage, a second converter and a control circuit, wherein the first converter converts a first power into a second power, the power storage is electrically connected to the first converter and receives the second power, the second converter is electrically connected to the power storage and a power grid, the second converter receives the second power form the power storage and converts the second power into a third power, the control circuit is electrically connected to the first converter, the power storage and the second converter, a first measurement device installed between the second converter and the power grid, wherein the first measurement device transmits a power supply status and power usage information of the power grid to the control circuit or the second converter, and the second converter provides the third power to the power grid when a power supply frequency of the power grid drops; wherein the second converter stops transmitting the third power to the power grid in response to the power grid is out of power. ### Claim 8 (depends on 7) The power conversion device according to claim 7, wherein the power converter is configured outside the electric vehicle. ### Claim 9 (depends on 7) The power conversion device according to claim 7, wherein the first power is a direct current, the second power is a direct current, and the third power is an alternating current. ### Claim 10 (depends on 7) The power conversion device according to claim 7, wherein when a remaining power of the battery pack of the electric vehicle reaches a critical value, the power converter stops operating. ### Claim 11 (depends on 7) The power conversion device according to claim 7, further comprising a switching module which is electrically connected to the first converter, the second converter and the control circuit, wherein the switching module is controlled by the control circuit to electrically connect to the first converter or the second converter according to a command. ### Claim 12 (depends on 11) The power conversion device according to claim 11, wherein the command is issued by a user through an operating interface, or issued from a non-transitory data storage media or a computing device. ### Claim 13 (depends on 7) The power conversion device according to claim 7, wherein the second converter is a grid-tie inverter.