# US 10,119,513 B2 · Power supply system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,513 B2 - Document ID: US10119513B2 - Status: Granted - Kind: B2 - Application number: 15/573,728 - Filed: 2015-05-12 - Published: 2018-05-10 - Granted: 2018-11-06 - Earliest claimed: 2015-05-12 - Assignees: Nissan Motor Co., Ltd. - Applicants: Nissan Motor Co., Ltd. - Inventors: Masahiko Tahara; Atsushi Tezuka; Tomoyuki Koike; Munemitsu Watanabe; Akifumi Koishi; Terumasa Tsuchiya - Web page: https://patentgrep.com/patent/US10119513B2 ## CPC - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 7/10: Dynamic electric regenerative braking (B60L7/22 takes precedence) - B60L 50/16: with provision for separate direct mechanical propulsion - B60R 16/023: for transmission of signals between vehicle parts or subsystems - B60R 16/0307: {using generators driven by a machine different from the vehicle motor} - 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) - F02N 11/0814: {comprising means for controlling automatic idle-start-stop} - H02J 7/14: for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle - F02N 11/0866: {comprising several power sources, e.g. battery and capacitor or two batteries} - F02N 2200/063: Battery voltage - F02N 2250/02: Battery voltage drop at start, e.g. drops causing ECU reset - Y02T 10/40: Engine management systems - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - 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 - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - F02N: STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A power supply system in a vehicle having an idling stop function for executing an automatic stop and an automatic restart on an engine has a power generator, a first storage unit that can be charged with and can discharge generated power generated by the power generator, a second storage unit that can be charged with and can discharge the generated power, two paths connecting the first storage unit and the second storage unit, a switching unit including a first switch for switching one path of the two paths between a conductive condition and a non-conductive condition, and a second switch for switching another path of the two paths between a conductive condition and a non-conductive condition, and an engine restarter connected to either the first storage unit side or the second storage unit side of the switching unit in order to start the engine during the automatic restart. ## Claims ### Claim 1 A power supply system in a vehicle having an idling stop function for executing an automatic stop and an automatic restart on an engine, the power supply system comprising: a power generator; a first storage unit that can be charged with and can discharge generated power generated by the power generator; a second storage unit that can be charged with and can discharge the generated power; two paths connecting the first storage unit and the second storage unit; a switching unit including a first switch for switching one path of the two paths between a conductive condition and a non-conductive condition, and a second switch for switching another path of the two paths between a conductive condition and a non-conductive condition; an engine restarter connected to either the first storage unit side or the second storage unit side of the switching unit in order to start the engine during the automatic restart; an electrical load of the vehicle, which is connected to the first storage unit side of the switching unit; and a controller configured to implement ON/OFF control on the first switch and the second switch, wherein the controller switches both the first switch and the second switch to the conductive condition for an entirety of a first period during which the engine is stopped during the idling stop, and for an entirety of a second period during which the engine is operative except during for a starting stage of the automatic restart, whereby discharge from the second storage unit to the electrical load is performed using both of the two paths. ### Claim 2 A power supply system in a vehicle having an idling stop function for executing an automatic stop and an automatic restart on an engine, the power supply system comprising: a power generator; a first storage unit that can be charged with and can discharge generated power generated by the power generator; a second storage unit that can be charged with and can discharge the generated power; two paths connecting the first storage unit and the second storage unit; a switching unit including a first switch for switching one path of the two paths between a conductive condition and a non-conductive condition, and a second switch for switching another path of the two paths between a conductive condition and a non-conductive condition; an engine restarter connected to either the first storage unit side or the second storage unit side of the switching unit in order to start the engine during the automatic restart; an electrical load of the vehicle, which is connected to the first storage unit side of the switching unit; and a controller configured to implement ON/OFF control on the first switch and the second switch, wherein the controller switches the second switch to the non-conductive condition when deceleration regeneration is underway in the vehicle, and wherein the controller switches both the first switch and the second switch to the conductive condition for an entirety of a first period during which the engine is stopped during the idling stop, and for an entirety of a second period during the engine is operative except for both a starting stage of the automatic restart and the deceleration regeneration, whereby discharge from the second storage unit to the electrical load is performed using both of the two paths. ### Claim 3 A power supply system in a vehicle having an idling stop function for executing an automatic stop and an automatic restart on an engine, the power supply system comprising: a power generator; a first storage unit that can be charged with and can discharge generated power generated by the power generator; a second storage unit that can be charged with and can discharge the generated power, two paths connecting the first storage unit and the second storage unit; a switching unit including a first switch for switching one path of the two paths between a conductive condition and a non-conductive condition, and a second switch for switching another path of the two paths between a conductive condition and a non-conductive condition; an engine restarter connected to either the first storage unit side or the second storage unit side of the switching unit in order to start the engine during the automatic restart; an electrical load of the vehicle, which is connected to the first storage unit side of the switching unit; and a controller configured to implement ON/OFF control on the first switch and the second switch, wherein the power generator is disposed on the second storage unit side of the switching unit, wherein the controller switches the first switch to the non-conductive condition when deceleration regeneration is underway in the vehicle, and wherein the controller switches both the first switch and the second switch to the conductive condition for an entirety of a first period during which the engine is stopped during the idling stop, and for entirety of a second period during which the engine is operative except for both a starting stage of the automatic restart and the deceleration regeneration, whereby discharge from the second storage unit to the electrical load is performed using both of the two paths.