# US 11,909,249 B2 · Power feeding system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,249 B2 - Document ID: US11909249B2 - Status: Granted - Kind: B2 - Application number: 17/455,382 - Filed: 2021-11-17 - Published: 2022-05-19 - Granted: 2024-02-20 - Earliest claimed: 2020-11-18 - Assignees: Primearth Ev Energy Co., Ltd. - Applicants: Primearth Ev Energy Co., Ltd. - Inventors: Daisuke Koba; Yuji Torii; Yuji Sakayanagi; Yasushi Matsukawa - Web page: https://patentgrep.com/patent/US11909249B2 ## 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} - H02J 7/14: for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle - B60K 16/00: Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind (electric propulsion with power supply from forces of nature, e.g. sun or wind, B60L8/00; wind motors specially adapted for installation on vehicles F03D9/32) - B60L 8/003: {Converting light into electric energy, e.g. by using photo-voltaic systems} - H02J 1/00: Circuit arrangements for DC mains or DC distribution networks - H02J 3/38: Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel - H02J 7/02: for charging batteries from AC mains by converters - H02J 7/34: Parallel operation in networks using both storage and other DC sources, e.g. providing buffering (H02J7/14 takes precedence) - H02J 7/663: {using battery or load disconnect circuits (H02J9/002 takes precedence)} - H02S 10/20: Systems characterised by their energy storage means (H02S40/38 takes precedence) - B60K 2016/003: {solar power driven} - H02J 2101/24: Photovoltaics - Y02E 10/56: Power conversion systems, e.g. maximum power point trackers - Y02E 70/30: Systems combining energy storage with energy generation of non-fossil origin - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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 - H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A power feeding system of the present disclosure includes a control unit. In a case where a magnitude of supply destination power is smaller than an upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power based on power output from the power source, and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source. In a case where the magnitude of the supply destination power is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power by both the power source and the storage battery. ## Claims ### Claim 1 A power feeding system comprising: a storage battery configured to be rechargeable and dischargeable, and to output power at a storage battery output voltage; a charge/discharge control circuit configured to control charging/discharging power to/from the storage battery; a power source at least having a power supply capability, wherein the power source includes a hybrid vehicle to which fuel that is usable for power generation can be added; a control unit configured to control an operation of the charge/discharge control circuit; and a power conversion circuit configured to convert DC power supplied from the storage battery and the power source into AC power and output the AC power to a power supply destination, wherein in a case where a magnitude of supply destination power which is consumption power at the power supply destination to be supplied with power by the power source is lower than an upper limit value of the power supply capability of the power source, the power supply destination being a house or a power grid line, the control unit controls the charge/discharge control circuit so as to meet the supply destination power of the house or the power grid line based on power output from the power source and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source, in a case where the magnitude of the supply destination power of the house or the power grid line is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power of the house or the power grid line by both the power source and the storage battery, and in a case where the power source is disconnected from the power feeding system for replenishing the power source with fuel, the control unit controls the charge/discharge control circuitry so as to continue a maximum power supply to the power supply destination when the power source is disconnected from the power feeding system, and the control unit controls the charge/discharge control circuitry responsive to a forced charging instruction from a user so as to force charging of the storage battery prior to disconnecting the power source from the power feeding system for replenishing the power source with fuel. ### Claim 2 (depends on 1) The power feeding system according to claim 1, wherein the control unit controls the charge/discharge control circuit so as to change the power supply capability of the power source to be allocated to charging of the storage battery based on a state of charge of the storage battery and the magnitude of the supply destination power. ### Claim 3 (depends on 2) The power feeding system according to claim 2, wherein the control unit controls the charge/discharge control circuit so as to further change the power supply capability of the power source to be allocated to charging of the storage battery based on an environmental temperature at a place where the storage battery is installed. ### Claim 4 (depends on 1) The power feeding system according to claim 1, wherein in a case where the forced charging instruction is provided from the user, the control unit controls the charge/discharge control circuit so as to perform charging until the storage battery reaches a full charge, and provides the user with a charging completion notification in response to completion of charging of the storage battery. ### Claim 5 (depends on 1) The power feeding system according to claim 1, further comprising a solar panel configured to supply the supply destination power. ### Claim 6 (depends on 1) The power feeding system according to claim 1, wherein the power source is a secondary battery configured to give priority to power storage capacity performance over the storage battery, and the control unit controls the charge/discharge control circuit so as to change a ratio between a magnitude of power to be taken out of the power source and a magnitude of power to be taken out of the storage battery in accordance with a varying speed of the supply destination power and states of the power source and the storage battery. ### Claim 7 A power feeding system comprising: a storage battery configured to be rechargeable and dischargeable, and to output power at a storage battery output voltage; a charge/discharge control circuit configured to control charging/discharging power to/from the storage battery; a power source at least having a power supply capability, wherein the power source includes a generator; a power conversion circuit configured to convert DC power supplied from the storage battery and the power source into AC power and output the AC power to a power supply destination; and a control unit configured to control an operation of the charge/discharge control circuit, wherein in a case where a magnitude of supply destination power which is consumption power at the power supply destination to be supplied with power by the power source is lower than an upper limit value of the power supply capability of the power source, the power supply destination being a house or a power grid line, the control unit controls the charge/discharge control circuit so as to meet the supply destination power of the house or the power grid line based on power output from the power source and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source, in a case where the magnitude of the supply destination power of the house or the power grid line is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power of the house or the power grid line by both the power source and the storage battery, and in a case where the power source is disconnected from the power feeding system for replenishing the power source with fuel, the control unit controls the charge/discharge control circuitry so as to continue a maximum power supply to the power supply destination when the power source is disconnected from the power feeding system, and the control unit controls the charge/discharge control circuitry responsive to a forced charging instruction from a user so as to force charging of the storage battery prior to disconnecting the power source from the power feeding system for replenishing the power source with fuel.