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WO2013031615A1 - Système de batterie pour une voiture hybride et voiture hybride équipée de ce système de batterie - Google Patents

Système de batterie pour une voiture hybride et voiture hybride équipée de ce système de batterie Download PDF

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Publication number
WO2013031615A1
WO2013031615A1 PCT/JP2012/071243 JP2012071243W WO2013031615A1 WO 2013031615 A1 WO2013031615 A1 WO 2013031615A1 JP 2012071243 W JP2012071243 W JP 2012071243W WO 2013031615 A1 WO2013031615 A1 WO 2013031615A1
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WIPO (PCT)
Prior art keywords
battery
temperature
traveling
charging current
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/071243
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English (en)
Japanese (ja)
Inventor
公彦 古川
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of WO2013031615A1 publication Critical patent/WO2013031615A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/14—Preventing excessive discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/12—Buck converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/66—Ambient conditions
    • B60L2240/662—Temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a battery system mounted on a hybrid car, and more particularly, a battery system for a hybrid car that charges a low-voltage electrical battery with a high-voltage traveling battery that travels the vehicle, and a hybrid including the battery system. Car related.
  • the battery system of a hybrid car includes a high-voltage traveling battery that supplies power to a motor that drives the vehicle, and a low-voltage electrical battery.
  • a nickel metal hydride battery, a lithium ion battery, a lithium polymer battery or the like having an output voltage of 200 V to 300 V is used.
  • a 12V lead battery is used as the electrical battery.
  • the battery for electrical equipment supplies power to a circuit for controlling charging of the battery for traveling and electrical equipment for the vehicle.
  • This battery system is provided with a DC / DC converter for stepping down the output voltage of the battery for running instead of the generator for the battery for electrical equipment.
  • a DC / DC converter that charges an electrical battery in place of the generator can charge the electrical battery in a more preferable state. This is because the charging current of the battery for electrical equipment can be precisely controlled by controlling the DC / DC converter.
  • this battery system is mounted on a hybrid car and has a feature that the power efficiency of the battery for electrical equipment can be increased. This is because the power generation efficiency of the DC / DC converter is high, while the generator of the electrical battery is charged with a considerably light load in most states, and the overall power generation efficiency is considerably low. This is because the charging efficiency of the traveling battery can also be increased.
  • the battery system of Patent Document 1 can charge the electrical battery with the traveling battery even when the vehicle is not traveling and the electrical battery is overdischarged. For this reason, even if it becomes the state by which the battery for electrical equipment was over-discharged, the battery for electrical equipment can be charged with the battery for traveling, and it can be made into the state which can drive
  • the hybrid car cannot travel if either the traveling battery or the electrical battery is overdischarged. This is because the hybrid car engine cannot be started. The hybrid car cannot start the engine to be started if the electric battery is overdischarged, because the electric circuit for starting cannot be operated if the electric battery is overdischarged. For this reason, if the vehicle is not used for a considerable period of time and the electrical battery is overdischarged, the hybrid car cannot start the engine. By charging the battery for electrical equipment, the engine can be started and can be driven.
  • An important object of the present invention is to provide a hybrid capable of charging a battery for electrical equipment with a battery for traveling and realizing traveling of the vehicle in an overdischarged state of the battery for electrical equipment while preventing a decrease in the life of the battery for traveling in an extremely low temperature state
  • the object is to provide a car battery system and a hybrid car including the battery system.
  • a battery system for a hybrid car includes a traveling battery that supplies power to a motor that travels a vehicle, a DC / DC converter that steps down the voltage of the traveling battery, and a voltage that is stepped down by the DC / DC converter. And a control circuit for controlling charging of the battery for electrical equipment by the battery for traveling, and a temperature sensor for detecting the temperature or ambient temperature of the battery for traveling. The control circuit controls the charging current for charging the electrical battery with the traveling battery to be smaller than the charging current in a state where the temperature detected by the temperature sensor is lower than the set temperature.
  • the battery system described above is characterized by charging the electrical battery with the traveling battery to prevent the traveling battery from deteriorating in an extremely low temperature state while realizing the traveling of the vehicle in the overdischarged state of the electrical battery. is there. This is because, in a low temperature state where the electric characteristics of the traveling battery deteriorate, the current for charging the electrical battery with the traveling battery is reduced, and the discharge current of the traveling battery is limited to be small.
  • the traveling battery can be a lithium ion battery or a lithium polymer battery.
  • the above battery system can effectively prevent a decrease in electrical characteristics at low temperatures of these traveling batteries while increasing the charge / discharge capacity with respect to weight by using the traveling battery as a lithium ion battery or a lithium polymer battery. .
  • the control circuit stores a set temperature for reducing the charging current of the electric battery by the traveling battery, and the set temperature can be set to ⁇ 10 ° C. to ⁇ 35 ° C.
  • the battery system described above is characterized in that the battery for electrical equipment can be charged with the battery for traveling while preventing deterioration of the battery for traveling at an extremely low temperature of ⁇ 10 ° C. to ⁇ 35 ° C.
  • the control circuit stores the charging current of the battery for electrical equipment when the detected temperature of the temperature sensor is lower than the set temperature and when the detected temperature is normal temperature than the set temperature.
  • the charging current of the electrical battery in can be set to 1/10 to 1/2 of the charging current at room temperature.
  • the above battery system limits the charging current of the electric battery in the low temperature state, thereby reducing the discharge current of the driving battery to 1/10 to 1/2. Therefore, the deterioration of the driving battery in the low temperature state It is possible to charge the battery for electrical equipment with the battery for traveling while preventing this.
  • the control circuit stores the charging current of the electric battery with respect to the detected temperature of the temperature sensor as a lookup table, and the electric battery is corresponding to the detected temperature stored in the lookup table.
  • the charging current can be controlled.
  • the above battery system limits the charging current of the electric battery with respect to the detected temperature in accordance with the lookup table stored in the control circuit, so the charging current of the electric battery, that is, the discharging current of the traveling battery is reduced at low temperatures. Accurate control can effectively prevent deterioration of the battery for traveling.
  • the control circuit stores the charging current of the electric battery with respect to the temperature detected by the temperature sensor as a function, and controls the charging current of the electric battery based on the stored function. it can.
  • the above battery system limits the charging current of the electric battery with respect to the detected temperature based on the function stored in the control circuit, so that the charging current of the electric battery, that is, the discharging current of the traveling battery can be accurately measured in a low temperature state. It is possible to effectively prevent deterioration of the traveling battery.
  • the control circuit can control the charging current of the battery for electrical equipment by controlling the discharging current of the battery for traveling. Since the above battery system controls the discharge current of the battery for traveling and controls the charging current of the battery for electrical equipment, the battery for electrical equipment can be charged while effectively protecting the battery for traveling in a low temperature state. For this reason, the battery for electrical equipment can be charged with this while effectively preventing deterioration of the battery for traveling in a low temperature state.
  • the hybrid car of the present invention can include any one of the battery systems described above.
  • the battery system of the present invention is mounted on a hybrid car.
  • This battery system includes a traveling battery 1 that supplies electric power to a motor 11 that travels a vehicle, a DC / DC converter 3 that steps down the voltage of the traveling battery 1, and a voltage that is stepped down by the DC / DC converter 3.
  • An electric battery 2 to be charged, a control circuit 4 that controls charging of the electric battery 2 by the traveling battery 1, and a temperature sensor 5 that detects the temperature or ambient temperature of the traveling battery 1 are provided.
  • the hybrid car includes a generator 12 driven by an engine 13 and further driven by regenerative braking.
  • the generator 12 charges the battery 1 for traveling.
  • the traveling battery 1 is a high voltage battery of 100 V to 300 V, and a plurality of rechargeable secondary batteries 6 such as lithium ion batteries, lithium polymer batteries, and nickel hydride batteries are connected in series to increase the output voltage. Further, the traveling battery can be increased in capacity by paralleling a plurality of secondary batteries.
  • the traveling battery 1 supplies electric power to a motor 11 that causes the vehicle to travel through a DC / AC inverter 10.
  • the DC / AC inverter 10 is controlled by the control unit 14 to control the electric power supplied to the motor 11, that is, the discharge current of the traveling battery 1, thereby causing the vehicle to travel.
  • the control unit 14 controls the DC / AC inverter 10 based on input information such as an accelerator and a brake, and controls the power supplied from the traveling battery 1 to the motor 11.
  • the traveling battery 1 mounted on the hybrid car is charged by an engine 13 that drives the vehicle or a generator 12 that is driven by an engine 13 dedicated to charging.
  • the control unit 14 controls the charging and discharging of the traveling battery 1 and is held within a predetermined remaining capacity, for example, in the range of 50 ⁇ 20%.
  • the electric battery 2 is a 12V lead battery that supplies electric power to electric components mounted on the vehicle, and further supplies electric power to the control unit 14 that controls charging / discharging of the traveling battery 1 and the power circuit of the control circuit 4. Supply.
  • the DC / DC converter 3 steps down the DC voltage of the traveling battery 1 to a voltage for charging the electrical battery 2 and charges the electrical battery 2 with the traveling battery 1.
  • the control circuit 4 controls the output of the DC / DC converter 3 to keep the electrical battery 2 in a certain voltage range. However, the control circuit 4 keeps the voltage of the electrical battery 2 in a certain voltage range in a state where the main switch that is turned on when the vehicle is running, that is, the ignition switch 15 is turned on. Therefore, the control circuit 4 includes a voltage detection circuit (not shown) that detects the voltage of the electrical equipment battery 2.
  • the control circuit 4 controls the DC / DC converter 3 so that the detection voltage of the electrical equipment battery 2 detected by the voltage detection circuit is in a certain voltage range, and charges the electrical equipment battery 2 with the traveling battery 1.
  • the control circuit 4 controls the DC / DC converter 3 to control the charging current for charging the electrical battery 2 with the traveling battery 1 to keep the electrical battery 2 in a certain voltage range.
  • control circuit 4 can also control the DC / DC converter 3 with a signal from the control unit 14 mounted on the vehicle to make the battery 2 for electrical equipment within a certain voltage range.
  • the control circuit 4 charges the electrical battery 2 with the traveling battery 1 when, for example, the brake of the vehicle is depressed and regenerative braking is performed.
  • the control circuit 4 controls the current for charging the electrical battery 2 with the traveling battery 1 also according to the temperature of the traveling battery 1 and the ambient temperature.
  • a temperature sensor 5 for detecting the temperature of the traveling battery 1 or the ambient temperature is provided.
  • the temperature sensor 5 preferably detects the temperature of the traveling battery 1. However, even if the ambient temperature decreases, the temperature of the traveling battery 1 decreases, so that the ambient temperature can be detected to control the charging current of the traveling battery 1.
  • the control circuit 4 controls the charging current for charging the electrical battery 2 with the traveling battery 1, that is, the discharging current of the traveling battery 1, according to the temperature detected by the temperature sensor 5.
  • the control circuit 4 limits the charging current of the electrical battery 2 to be smaller in a state where the temperature detected by the temperature sensor 5 is lower than the set temperature than in a state where the temperature is higher than the set temperature. This is to protect the traveling battery 1 whose electrical characteristics are degraded in a low temperature state.
  • the control circuit 4 switches the charging current for charging the electrical battery 2 with the traveling battery 1 above and below the set temperature. For example, when the detected temperature is lower than the set temperature, the control circuit 4 sets the electrical battery 2 with the traveling battery 1.
  • the charging current to be charged is limited to be smaller than the charging current in a state higher than the set temperature. For example, the control circuit 4 sets the set temperature to ⁇ 30 ° C., and the charging current of the electrical battery 2 by the traveling battery 1 in a low temperature state where the detected temperature is lower than the set temperature. The detected temperature is lower than the set temperature. Make it smaller than the charging current at high room temperature.
  • the charging current of the electrical battery 2 in the normal temperature state can be increased to quickly charge the electrical battery 2, and the charging current of the electrical battery 2 in the low temperature state can be reduced to reduce the deterioration of the traveling battery 1 in the low temperature state. Less. Therefore, the charging current of the electrical battery 2 in the low temperature state is preferably 1/10 of the charging current in the normal temperature state so that the electrical battery 2 can be charged as quickly as possible while preventing the traveling battery 1 from deteriorating. ⁇ 1 / 2.
  • the control circuit 4 can also change the charging current for charging the electrical battery 2 with the traveling battery 1 according to the voltage of the traveling battery 1. For example, the charging current when the voltage of the traveling battery 1 is low can be made smaller than the charging current when the voltage is high. In this case, the control circuit 4 limits the maximum value of the charging current when the battery voltage is low to be smaller than the charging current specified by the detected temperature. This is for preventing the deterioration of the traveling battery 1 whose voltage is lowered and the electrical characteristics are lowered.
  • control circuit 4 that sets the charging current of the electrical battery 2 with the detected temperature can most easily control the charging current.
  • control circuit 4 stores a plurality of set temperatures, and changes the charging current above and below the set temperatures, thereby reducing the charging current of the electrical battery 2 by the traveling battery 1 with the detected temperature being low. You can also.
  • the control circuit 4 stores the charging current of the electrical battery 2 with respect to the detected temperature of the temperature sensor 5 as a lookup table or as a function. I remember it.
  • the control circuit 4 controls the charging current of the electrical battery 2 corresponding to the detected temperature stored in the lookup table or stored as a function.
  • a battery system mounted on a vehicle charges the electrical battery 2 with the traveling battery 1 in a state where the ignition switch 15 that is the main switch of the vehicle is turned on, and the electrical battery 2 is kept at a constant voltage. Keep in range.
  • the electrical battery 2 is held in a certain voltage range in a state where the ignition switch 15 is turned on and the battery 1 can be charged.
  • the electrical battery 2 is no longer charged by the traveling battery 1. Accordingly, the voltage of the electrical battery 2 after the ignition switch 15 is switched off is lower than in the state where the ignition switch 15 is switched on.
  • the control circuit 4 determines that the temperature is normal and charges the electrical battery 2 with the traveling battery 1 with a predetermined current. However, when the detected temperature is lower than the set temperature, the control circuit 4 limits the charging current of the electrical battery 2 by the traveling battery 1 to prevent the traveling battery 1 from deteriorating. This is for charging the battery 2 for electrical equipment while protecting the battery 1 for traveling whose electrical characteristics are lowered at low temperatures.
  • the electric battery 2 is charged by the traveling battery 1, power can be supplied from the electric battery 2 to the power source of the control unit 14, and the engine 13 can be started by the traveling battery 1.
  • the traveling battery 1 is charged by the generator 12, and the electrical battery 2 is also charged by the traveling battery 1 in this state. It is held in a certain voltage range.
  • FIG. 2 shows an example in which the battery system 100 is mounted on a hybrid vehicle.
  • a vehicle HV equipped with the battery system 100 shown in this figure includes an engine 13 for traveling the vehicle HV, a motor 11 for traveling, a battery system 100 for supplying electric power to the motor 11, and power generation for charging a battery of the battery system 100.
  • the battery system 100 is connected to a motor 11 and a generator 12 via a DC / AC inverter 10.
  • the vehicle HV travels by both the motor 11 and the engine 13 while charging / discharging the battery of the battery system 100.
  • the motor 11 is driven to drive the vehicle when the engine efficiency is low, for example, when accelerating or traveling at a low speed.
  • the motor 11 is driven by power supplied from the battery system 100.
  • the generator 12 is driven by the engine 13 or driven by regenerative braking when braking the vehicle, and charges the battery of the battery system 100.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Le problème à résoudre dans le cadre de la présente invention consiste à empêcher que la durée de vie d'une batterie de voyage ne soit écourtée lorsque température est extrêmement basse tout en permettant le déplacement du véhicule avec une batterie destinée aux dispositifs électriques embarqués dans le véhicule et dont l'état est excessivement déchargé en chargeant la batterie destinée aux dispositifs électriques embarqués dans le véhicule à l'aide de la batterie de voyage. La solution proposée consiste en un système de batterie pour un véhicule hybride, ledit système de batterie comprenant : une batterie de voyage (1) qui fournit l'énergie à un moteur (11) pour permettre à un véhicule de se déplacer ; un convertisseur CC/CC (3) qui abaisse la tension de la batterie de voyage (1) ; une batterie (2) destinée aux dispositifs électriques embarqués dans le véhicule et qui est chargée par la tension abaissée par le convertisseur CC/CC (3) ; un circuit de commande (4) qui commande la charge de la batterie (2) destinée aux dispositifs électriques embarqués dans le véhicule au moyen de la batterie de voyage (1) ; et un capteur de température (5) qui détecte la température de la batterie de voyage (1) ou la température ambiante. Le circuit de commande (4) régule le courant de charge pour charger la batterie (2) destinée aux dispositifs électriques embarqués dans le véhicule au moyen de la batterie de voyage (1) de telle sorte que, lorsque la température détectée par le capteur de température (5) est plus basse qu'une température déterminée, le courant de charge soit plus faible que le courant de charge lorsque la température détectée par le capteur de température (5) est plus élevée que la température déterminée.
PCT/JP2012/071243 2011-09-02 2012-08-22 Système de batterie pour une voiture hybride et voiture hybride équipée de ce système de batterie Ceased WO2013031615A1 (fr)

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JP2011-191432 2011-09-02
JP2011191432 2011-09-02

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WO2013031615A1 true WO2013031615A1 (fr) 2013-03-07

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JP2017114311A (ja) * 2015-12-24 2017-06-29 いすゞ自動車株式会社 ハイブリッド車両及びその制御方法
JP2017135797A (ja) * 2016-01-26 2017-08-03 本田技研工業株式会社 電力供給システム及び輸送機器、並びに、電力伝送方法
CN111823951A (zh) * 2020-06-29 2020-10-27 永安行科技股份有限公司 助力车动力电池系统及持续供能控制方法
JP2025503028A (ja) * 2022-01-24 2025-01-30 ケーティー アンド ジー コーポレイション エアロゾル生成装置

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JP2010036594A (ja) * 2008-07-31 2010-02-18 Toyota Motor Corp ハイブリッド自動車
JP2010129361A (ja) * 2008-11-27 2010-06-10 Honda Motor Co Ltd 車両用電源装置

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JP2006074874A (ja) * 2004-08-31 2006-03-16 Sony Corp 充電回路および電子機器
JP2007082375A (ja) * 2005-09-16 2007-03-29 Toyota Motor Corp 車両用電源装置

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JP2002125326A (ja) * 2000-10-12 2002-04-26 Honda Motor Co Ltd バッテリの充電制御方法
JP2010036594A (ja) * 2008-07-31 2010-02-18 Toyota Motor Corp ハイブリッド自動車
JP2010129361A (ja) * 2008-11-27 2010-06-10 Honda Motor Co Ltd 車両用電源装置

Cited By (5)

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Publication number Priority date Publication date Assignee Title
JP2017114311A (ja) * 2015-12-24 2017-06-29 いすゞ自動車株式会社 ハイブリッド車両及びその制御方法
JP2017135797A (ja) * 2016-01-26 2017-08-03 本田技研工業株式会社 電力供給システム及び輸送機器、並びに、電力伝送方法
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CN111823951A (zh) * 2020-06-29 2020-10-27 永安行科技股份有限公司 助力车动力电池系统及持续供能控制方法
JP2025503028A (ja) * 2022-01-24 2025-01-30 ケーティー アンド ジー コーポレイション エアロゾル生成装置

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