WO2018147046A1 - 蓄電池管理システム、移動体、蓄電池、及び蓄電池管理方法 - Google Patents
蓄電池管理システム、移動体、蓄電池、及び蓄電池管理方法 Download PDFInfo
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- WO2018147046A1 WO2018147046A1 PCT/JP2018/001573 JP2018001573W WO2018147046A1 WO 2018147046 A1 WO2018147046 A1 WO 2018147046A1 JP 2018001573 W JP2018001573 W JP 2018001573W WO 2018147046 A1 WO2018147046 A1 WO 2018147046A1
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- storage battery
- activation signal
- battery
- identification information
- management unit
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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
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- 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
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/305—Communication interfaces
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- 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]
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- 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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- 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
- B60L2200/00—Type of vehicles
- B60L2200/12—Bikes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
- B60Y2200/126—Scooters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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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
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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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
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
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- 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
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- 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
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T90/12—Electric charging stations
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- 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 storage battery management system, a mobile body, a storage battery, and a storage battery management method.
- storage batteries have been used as energy sources for devices such as electric vehicles and mobiles and portable terminals.
- the capacity of the storage battery is required to be commensurate with the amount of power required for the device.
- the electric energy of the apparatus is securable by exchanging the mounted storage battery systematically or in an emergency.
- a battery pack in which a plurality of battery modules (storage batteries) are combined is known.
- a battery pack may include a management unit (BMU: Battery Management Unit) that manages the state of charge of the battery module.
- BMU Battery Management Unit
- an upper control unit identifies individual management units and manages the state of the battery module corresponding to the management unit (for example, Patent Documents). 1).
- Patent Documents Patent Documents
- the upper control unit individually manages a plurality of battery modules as in Patent Document 1
- each device is electrically connected by a CAN-BUS (communication line), and the same signal propagates to all apparatuses (CAN receivers) that can receive the signal. Is done.
- An object of an aspect of the present invention is to provide a storage battery management system, a mobile body, a storage battery, and a storage battery management method that can further enhance the convenience of a device that detachably mounts a storage battery.
- a storage battery management system is a storage battery management system that manages the state of a storage battery that is detachably mounted, and generates an activation signal for making the mounted storage battery usable
- An activation signal generating unit that performs management; a storage unit that receives the activation signal and the identification information of the storage battery in association with each other; and a storage battery management unit of the storage battery and the activation signal processing unit that are electrically connected An activation signal transmission line for connecting to the battery; and a signal transmission line for electrically connecting the storage battery management unit and the management unit.
- the management unit may send the identification information of the storage battery to the storage battery via a communication IF unit activated by the activation signal.
- the activation signal generation unit may generate the activation signal for controlling the activation state of the storage battery for each of the storage batteries.
- the activation signal generator generates a first activation signal as the activation signal for the first storage battery, and the first identification information corresponding to the first activation signal is the first identification information. After giving to this storage battery, you may produce
- the activation signal generation unit transmits the activation signal to be given to the storage battery to be activated, and then the activation signal generation unit loses the control state until the storage battery management unit of the storage battery loses the control state.
- the recovered signal may be recovered.
- the activation signal generation unit sends out an initialization request signal that continues for a predetermined time and a delay from the initialization request signal so as not to overlap a transmission period of the initialization request signal.
- the activation signal to be generated may be generated.
- the management unit to the storage battery management unit of the storage battery that has received the activation signal, during a period when the initialization request signal and the activation signal are not sent from the activation signal generation unit,
- the storage battery management unit and the storage battery identification information may be associated with each other by providing the storage battery identification information.
- mode of this invention is a mobile body which manages the state of the storage battery mounted
- a storage battery is a storage battery that is detachably mounted on a device, the communication IF unit receiving an activation signal from the device and being activated by the activation signal; A storage battery management unit that acquires identification information of the storage battery from the device in a state activated by the activation signal.
- a storage battery management method is a storage battery management method for managing the state of a storage battery that is detachably mounted, and the storage battery can be used for the storage battery that is mounted. Generating an activation signal for setting the state; and associating the storage battery management unit of the storage battery that has received the activation signal with the identification information of the storage battery.
- the storage battery management method may include sequentially activating the plurality of storage batteries mounted on the mobile body according to a predetermined order; and adding the identification information to the storage battery.
- the storage battery management system which manages the state of the storage battery mounted so that attachment or detachment is possible,
- generates the activation signal for making the storage battery mounted can be used;
- a management unit that associates and manages the storage battery that has received the activation signal and the identification information of the storage battery; an activation signal for electrically connecting the storage battery management unit of the storage battery and the activation signal processing unit;
- FIG. 1 is a block diagram illustrating a schematic configuration of a storage battery that stores electric power for driving an electric motorcycle according to the present embodiment and a control system of the storage battery.
- FIG. It is a figure for demonstrating the activation process of the battery of embodiment. It is a figure for demonstrating the process for activating the battery of embodiment. It is a flowchart which shows the process for detecting that identification information is stored in the battery of embodiment. It is a figure for demonstrating the process which detects the loss of the identification information of the battery of embodiment. It is a figure for demonstrating the process for resetting an identification number to the battery of embodiment. It is a figure for demonstrating the process for activating the battery of 2nd Embodiment.
- FIG. 1 is a diagram illustrating an example of a saddle-ride type electric vehicle to which the electric circuit of the embodiment is applied.
- FIG. 1 shows an example of a scooter-type saddle-ride type electric vehicle (hereinafter referred to as “electric motorcycle”) having a low floor.
- the electric motorcycle 1 shown in FIG. 1 is an example of a moving body and a device.
- the body frame F of the electric motorcycle 1 supports the front fork 11 so that it can be steered.
- a front wheel WF is pivotally supported at the lower end of the front fork 11.
- a steering handle 16 is connected to the upper portion of the front fork 11.
- a front end portion of the swing arm 17 is supported at the rear portion of the vehicle body frame F so as to be swingable.
- An electric motor 135 is provided at the rear end of the swing arm 17.
- the rear wheel WR is rotationally driven by the power output from the electric motor 135.
- a pair of left and right seat frames 15 are provided so as to be connected to the rear part of the body frame F.
- a riding seat 21 is supported on the seat frame 15.
- a synthetic resin vehicle body cover 22 that covers the vehicle body frame F is attached to the vehicle body frame F.
- FIG. 1 shows an example of the arrangement of some electrical components.
- a battery housing part 120 ⁇ / b> C made of synthetic resin is provided between the pair of left and right seat frames 15 below the riding seat 21.
- Battery 120 (storage battery) is detachably stored in battery storage unit 120C.
- the electric motor 135 provided on the swing arm 17 is driven by a PDU (Power Device Unit) 130 by the electric power supplied from the battery 120 via the electric circuit 110, and the electric motor 135 is driven. Travels by transmitting the rotational power at the time to the rear wheel WR.
- the battery 120 of the embodiment is divided into a plurality of battery units such as batteries 121 and 122.
- the traveling of the electric motorcycle 1 is controlled by, for example, an ECU (Electric Control Unit) 140 disposed at an appropriate position such as the inside of the vehicle body cover 22.
- the charger 150 converts electric power supplied from the outside, and charges the battery 120 via the electric circuit 110.
- the charger 150 may be detachable from the electric motorcycle 1.
- the state of the mounted battery 120 is managed by the control system 10 (FIG. 2).
- FIG. 2 is a block diagram showing a schematic configuration of a storage battery that stores electric power for driving the electric motorcycle 1 of the present embodiment and a control system of the storage battery.
- Control system 10 storage battery management system
- the electric circuit 110 electrically connects the battery 120 (power source and first switch), the contactor 115 (first contactor), and the PDU 130 (load).
- the connection shown in FIG. 2 shows an example in which a battery 120 (power source and first switch), a contactor 115 (first contactor), and a PDU 130 (load) are connected in series.
- the electric circuit 110 includes a CAN-BUS (communication line) conforming to the CAN communication standard used for propagation of control signals and the like.
- At least battery 120 and ECU 140 are connected to CAN-BUS and communicate via CAN-BUS.
- a signal transmitted from the ECU 140 is propagated to each device such as the battery 120 and the PDU 130 that can receive the signal by CAN-BUS.
- the control system 10 of the present embodiment realizes this request with the following configuration.
- the connection of the electric circuit 110 is not limited to the above configuration, and may be another connection form.
- the battery 120 includes, for example, batteries 121 and 122.
- the batteries 121 and 122 are an example of a plurality of power storage units.
- the battery 120 generates a predetermined voltage (for example, its nominal voltage is 48V) by connecting a plurality of single batteries such as lithium ion batteries, nickel metal hydride batteries, and lead batteries in series.
- the electric power from the batteries 121 and 122 is supplied to the PDU 130 that controls the output of the electric motor 135 via the electric circuit 110, and is, for example, a three-phase AC motor after being converted from direct current to three-phase alternating current by the PDU 130. It is supplied to the electric motor 135.
- the PDU 130 is a so-called inverter.
- the output voltages of the batteries 121 and 122 are stepped down to a low voltage (for example, 12 V) by a DC-DC converter (not shown) and supplied to control system components such as the ECU 140 and the sub-battery 160.
- a DC-DC converter not shown
- a part of the low-voltage power stepped down by the DC-DC converter is supplied to general electric parts such as a control battery 125 (not shown) and a lighting device (not shown).
- the batteries 121 and 122 can be charged by, for example, a charger 150 connected to an AC 100V power source.
- the battery 121 (first storage battery) of the embodiment includes a battery main body 1211, a BMU (Battery Managing Unit) 1212 (storage battery management unit), a bidirectional switch 1213, an insulation unit 1214, a CAN-BUS transceiver (communication IF). Unit) 1215 (hereinafter referred to as transceiver 1215), a power supply unit 1216, a high potential side terminal 121P, a low potential side terminal 121N, and a connector 121C.
- the battery 122 (second storage battery) includes a battery main body 1221, a BMU 1222 (storage battery management unit), a bidirectional switch 1223, an insulation unit 1224, a CAN-BUS transceiver (communication IF unit) 1225 (hereinafter, referred to as “battery IF unit”). Transceiver 1225), a power supply unit 1226, a high potential side terminal 122P, a low potential side terminal 122N, and a connector 122C.
- the battery main body 1211 forms a secondary battery having a plurality of cells connected in series.
- the bidirectional switch 1213 is provided in series with the battery main body 1211, and the conduction state is determined by the control of the BMU 1212.
- the BMU 1212 detects the state of the battery main body 1211 and notifies the detected state to the ECU 140 or the like.
- the operation state of the BMU 1212 is determined by control from the ECU 140 or the like, and the BMU 1212 controls the conduction state of the bidirectional switch 1213 according to the determined operation state.
- the insulating unit 1214 is configured by an optical coupler or the like.
- the insulating unit 1214 electrically insulates the BMU 1212 side from the connector 121C side with respect to the signal between the BMU 1212 and the connector 121C.
- the insulating unit 1214 electrically insulates and converts the activation signal ACT supplied from the terminal a of the connector 121C toward the BMU 1212 and supplies the converted signal to the BMU 1212.
- the terminal a of the connector 121C connected to the insulating portion 1214 is connected to the ECU 140 via the activate line 1217 (activation signal transmission line).
- the insulating unit 1214 is provided between the BMU 1212 and the transceiver 1215.
- the insulating unit 1214 electrically insulates and converts the signal between the BMU 1212 and the transceiver 1215.
- the transceiver 1215 converts a signal used for communication between the BMU 1212 and the ECU 140 and relays it bidirectionally.
- ECU 140 and battery 120 communicate via CAN-BUS in accordance with the CAN standard.
- the transceiver 1215 is provided on the connector 121C side with respect to the insulating portion 1214. Terminals b and c of connector 121C connected to transceiver 1215 are connected to CAN-BUS via CAN communication line 1218 (signal transmission line).
- the transceiver 1215 satisfies the electrical connection condition (CAN standard physical condition) with the CAN-BUS.
- the power supply unit 1216 receives supply of power from the battery main body 1211 and supplies a part of the power to the BMU 1212, the insulating unit 1214, and the like. That is, the power supply unit 1216 is provided on the battery main body 1211 side with respect to the insulating unit 1214, and is electrically insulated from the connector 121C side.
- the storage battery management unit (BMU 1212) that functions by the power of the battery 121 and the transceiver 1215 are electrically insulated from each other by the insulating unit 1214.
- the high potential side terminal 121 ⁇ / b> P is a positive electrode of the battery 121.
- the low potential side terminal 121 ⁇ / b> N is a negative electrode of the battery 121.
- Connector 121 ⁇ / b> C includes a plurality of signal terminals for transmitting and receiving signals for controlling battery 121.
- the signal transmitted / received via connector 121C includes an activation signal ACT for activating battery 121 and a signal for BMU 1212 to communicate with ECU 140.
- the connector 121C includes a ground terminal and the like in addition to these signal terminals.
- the connector 121C is an example in the case of transmitting and receiving an electrical signal, and is not limited thereto, and may be optically transmitted and received.
- the battery 122 is the same as the battery 121.
- the BMU 1212 and the BMU 1222 may be simply referred to as BMU.
- the battery charge / discharge status, the amount of electricity stored in the battery body, the temperature, and the like are monitored by the BMU of each battery.
- the monitoring result is shared with the ECU 140.
- the BMU limits charging / discharging of the battery main body 1211 and the like by controlling the bidirectional switch 1213 and the like according to a control command from the ECU 140 described later or the above monitoring result. Details regarding communication between the BMU and the ECU 140 will be described later.
- the contactor 115 is provided between the high potential side terminal 122 ⁇ / b> P of the battery 121 and the PDU 130.
- the contactor 115 electrically connects the high-potential side terminal 122P of the battery 121 and the PDU 130, and disconnects the electrical connection.
- Contactor 115 connects battery 120 to PDU 130 in a conductive state. The contactor 115 releases the connection between the battery 120 and the PDU 130 in the disconnected state.
- the ECU 140 includes an activation signal generation unit 141, a CAN-BUS transceiver 143 (hereinafter referred to as transceiver 143), and a management unit 145.
- the activation signal generator 141 generates an activation signal ACT for making the battery 120 available.
- the activation signal generation unit 141 supplies the generated activation signal ACT to the battery 121 via the activate line 1217.
- the activation signal generation unit 141 supplies the generated activation signal ACT to the battery 122 via the activate line 1227 (activation signal transmission line).
- the ACTIVATE line for supplying the activation signal ACT is made as a different wiring for each individual battery 120.
- the activation signal generation unit 141 can activate (activate) the batteries 120 individually.
- the activation signal generator 141 assumes that the activation signal ACT is in a significant state at a voltage equivalent to the voltage supplied from the sub-battery 160 to the ECU 140. That is, the activation signal generation unit 141 outputs a voltage equivalent to the voltage supplied from the sub battery 160 to the ECU 140 when the activation signal ACT indicates a significant state.
- the activation signal generation unit 141 may include a switch (not shown), and may generate the activation signal ACT by controlling the conduction state of the switch.
- the activation signal generation unit 141 generates an activation signal ACT for each battery 120. Thereby, the activation state of the battery 120 can be individually controlled.
- the transceiver 143 converts a signal used for communication between the BMU 1212 and the ECU 140 and relays it bidirectionally.
- ECU 140 and battery 120 communicate via CAN-BUS in accordance with the CAN standard.
- the transceiver 143 in this case satisfies the electrical connection condition (CAN standard physical condition) with the CAN-BUS.
- the management unit 145 associates the battery 120 that has received the activation signal ACT with the identification information of the battery 120 and assigns the identification information to each battery 120.
- the management unit 145 sends the identification information of the battery 120 to the storage battery management unit (BMU 1212) via the transceiver 1215 activated by the activation signal ACT.
- the output request information from the throttle (accelerator) sensor 180 is input to the ECU 140.
- the management unit 145 controls the contactor 115, the battery 120, the PDU 130, and the like based on the output request information input to the ECU 140.
- the ECU 140 can regulate charging / discharging of the battery 120 by controlling the battery 120.
- the ECU 140 controls the contactor 115 to limit the power supply to the battery 120.
- the ECU 140 controls the driving of the electric motor 135 by controlling the power supplied from the PDU 130 to the electric motor 135.
- the BMU 1212 illustrated in FIG. 2 includes an activation control unit 1212A, a battery control unit 1212B, and a communication control unit 1212C.
- the activation control unit 1212A changes the state of the battery 121 to an activation state in which power can be output based on the activation signal ACT supplied from the ECU 140. For example, the activation control unit 1212A detects that the activation signal ACT is in a significant state, and changes the state of the battery 121 to an activation state in which power can be output. Activation control unit 1212A detects that activation signal ACT has become insignificant, and changes the state of battery 121 to an inactive state in which power is not output.
- the battery control unit 1212B detects, for example, a change in the state (voltage, SoC, etc.) of each cell of the battery main body 1211 and adjusts the charge state of each cell to be uniform. Further, the battery control unit 1212B controls the bidirectional switch 1213 by the control from the ECU 140 or the like so that the battery 121 can be used.
- the communication control unit 1212C communicates with the ECU 140 according to a predetermined protocol. For example, the communication control unit 1212C communicates information for controlling charging / discharging of the battery 121 with the ECU 140.
- the communication control unit 1212C and the ECU 140 communicate by including identification information for the ECU 140 to identify the battery 121 in the above information.
- the communication control unit 1212C stores the identification information notified from the ECU 140 in a storage area (not shown) in the BMU.
- the battery 120 is mounted on the electric motorcycle 1 and operates according to a control signal from the ECU 140 or the like.
- Example of usage mode for replacing battery 120 There is known a battery station that always has a plurality of charged batteries as replacement batteries.
- the battery stored in the battery station may not be given identification information (ID) unique to the battery.
- the electric motorcycle 1 of the embodiment is equipped with a plurality of batteries 120 of the same type.
- the battery 120 at the stage before being mounted on the electric motorcycle 1 is not provided with identification information for identifying the individual that allows the electric motorcycle 1 to identify individual batteries.
- the battery 120 has unique identification information for identifying the type. However, when a plurality of the same type of batteries 120 are mounted, each battery 120 is identified only by the identification information for identifying the type. Can not do it.
- the ECU 140 performs a process for making the battery identifiable by giving identification information to each battery.
- the ECU 140 provides individual identification by giving different identification information to each battery.
- the battery is replaced while the electric motorcycle 1 is stopped. That is, at the stage where the electric motorcycle 1 is started, it cannot be determined whether the same battery as that before the stop is mounted or whether a replacement battery is mounted.
- FIG. 3 is a diagram for explaining a battery activation process according to the embodiment.
- FIG. 3 shows the state transition of the battery 120. Hereinafter, each state will be described in order.
- State ST0 Standby State First, the battery 120 is in an initial state that is a standby state in which neither charging nor discharging is performed.
- the BMU detects the activation signal ACT, the BMU changes its control state to the state ST1 where the initialization process is executed.
- State ST1 Initialization State
- the BMU performs a predetermined initialization process.
- the BMU transitions its control state to the controlled state (state ST2) upon completion of the initialization process.
- the time required for the initialization process can be estimated in advance, and is sufficiently shorter than the time T1, for example.
- the BMU changes its control state to a standby state (state ST0) in which the activation signal ACT is waited.
- Controlled State is a state where it is possible to switch between a state in which power is supplied and a state in which the supply of power is restricted in accordance with control from the ECU 140.
- the electric motorcycle 1 can travel using the electric power of the battery 120 when in the controlled state.
- the activation signal ACT is maintained in a significant state.
- the BMU changes its control state to a recovery standby state (state ST3) in which the activation signal ACT waits for recovery.
- State ST3 Recovery Standby State
- the recovery standby state includes a state where the activation signal ACT is determined to be insignificant due to the influence of noise or vibration.
- the BMU changes its control state to Transition to the controlled state (state ST2).
- the BMU changes the control state to the standby state (state ST0).
- FIG. 4 is a diagram for explaining processing for activating the battery according to the embodiment.
- FIG. 4 shows transmission / reception of signals among ECU 140, battery 121, and battery 122, and processing related to transmission / reception of signals.
- the activation signal generator 141 of the ECU 140 sends an activation signal ACT to all the batteries 120 (battery 121 and battery 122) to activate each battery 120 (SA11). ECU 140 continues that state until a predetermined time T1 elapses (SA12). For example, the predetermined time is set to about 1 second.
- the battery 121 that has received the activation signal ACT supplies power for control to the BMU 1212 from the power supply unit 1216 to turn on the power (SB11).
- the BMU 1212 performs initialization processing at startup (SB12), sets a predetermined initial value “# 1” in the identification information (ID), and stores the initial value in the storage area.
- the activation signal generation unit 141 of the ECU 140 transmits a signal for canceling the activation by the activation signal ACT, and temporarily cancels the activation state of all the batteries 120 (SA13).
- the transceiver 1215 of the battery 121 functions using the power of the activation signal ACT, the activation signal ACT is stopped along with the release of the activation state, and the power supply is cut off. The function is stopped and communication becomes impossible (SB13). That is, the battery 121 in which the transceiver 1215 is in an inactive state does not acquire a message flowing in the CAN-BUS. Note that the BMU 1212 of the battery 121 maintains its control state until a predetermined time elapses even when the activation signal ACT is stopped.
- the activation signal generator 141 of the ECU 140 sends an activation signal ACT to the battery 121 to activate the battery 121 (SA21). Note that the transmission of the activation signal ACT to the battery 121 is continued for about time T2. In the battery 121, the control power supply is turned on again for the transceiver 1215 (SB21).
- the management unit 145 of the ECU 140 notifies the identification information “# B1” to be given to the battery 121 (SA22).
- the activation signal generation unit 141 gives individual identification information (“# B1”) to the battery 121, and is addressed to the battery whose identification information (ID) is “# B1”, that is, the message M1 addressed to the battery 121. Is generated.
- the activation signal generation unit 141 transmits the message M1 after waiting for a predetermined time T3 from the transmission of the activation signal ACT to the battery 121 in SA21.
- the BMU 1212 of the battery 121 receives the message M1, acquires the identification information “# B1”, and responds to it (SB22).
- the BMU 1212 stores the identification information “# B1” in the storage area and responds to the message M1.
- the activation signal generation unit 141 of the ECU 140 transmits a signal for canceling the activation of the battery 121, and releases the activation state of the battery 121 again (SA23).
- the battery 121 receives this, and the power supply of the transceiver 1215 is cut off (SB23).
- new identification information “# B1” is set in the battery 121.
- the ECU 140 sets the new identification information “# B2” in the battery 122 by performing the same procedure (SA31 to SA33) as the procedure from SA21 to SA23 described above.
- the processing from SC31 to SC33 in the battery 122 is the same as the processing from SB21 to SB23 in the battery 121.
- the activation signal generation unit 141 of the ECU 140 resumes the transmission of the activation signal ACT to all the batteries 120 and activates all the batteries 120 (SA41).
- the battery 121 is turned on for control of the transceiver 1215 (SB41), and the battery 122 is turned on for control of the transceiver 1225 (SC41).
- the ECU 140 can give new identification information to the battery 121 and the battery 122 for which identification information has not been set, and the identification information can be different from each other.
- the procedure shown in FIG. 4 shows a case where two batteries are controlled, but the number of batteries, the order of setting, etc. are not limited to this, and can be selected as appropriate.
- FIG. 5 is a flowchart showing a process for detecting that identification information is stored in the battery of the embodiment.
- the initial state in the procedure shown in FIG. 5 is a state in which the identification information of the battery 120 is given by the procedure shown in FIG.
- the BMU receives a message from the ECU 140 based on the set identification information and responds thereto. However, if the identification information is lost, at least a response message cannot be transmitted. For example, it may be estimated whether desired identification information is retained in the battery 120 by detecting a response message. Hereinafter, an example of the process will be described.
- the management unit 145 determines whether or not there is a reply message from the battery 121 in the received message (SA201). If there is a reply message from the battery 121 (SA201: Yes), the management unit 145 advances the process to SA203.
- the management unit 145 detects that the battery 121 has lost the identification information (SA204), and assigns the identification information again (SA205). At the same time, the value of the variable k is set to “0” (SA206), and the series of processing shown in FIG.
- FIG. 6 is a diagram for explaining processing for detecting loss of battery identification information according to the embodiment. The process shown in FIG. 6 is performed after the identification information is set in the battery 120.
- the ECU 140 requests communication from the battery 121 (SA51). Receiving this, the battery 121 responds to the request (SB51). ECU 140 receives the response from battery 121 and processes it (SA52).
- SA51 the battery 121 responds to the request
- SB51 the battery 121 responds to the request
- SA52 the response from battery 121 and processes it.
- SA52 the response from battery 121 and processes it.
- the ECU 140 requests communication from the battery 122 (SA61). Receiving this, the battery 122 responds to the request (SC61). ECU 140 receives the response from battery 122 and processes it (SA62).
- SA61 the battery 122 responds to the request
- SA62 the response from battery 122 and processes it.
- the case where the response to the request can be received as described above is an example of the case where the battery 122 has not lost the identification information. After this, it is assumed that no loss of identification information occurs in the battery 122.
- the ECU 140 requests communication to the battery 121 as in SA51 (SA71).
- the battery 121 cannot respond to the request (SB71).
- SB71 the request
- SA72 the ECU 140 cannot obtain a response from the battery 121
- the battery 122 responds to the request (SC81).
- the ECU 140 can obtain a response from the battery 122 and processes it (SA82).
- the ECU 140 can detect that the identification information has been lost by the above processing.
- FIG. 7 is a diagram for explaining processing for resetting the identification number in the battery according to the embodiment.
- the initial state in the procedure shown in FIG. 7 is a state in which the identification information of the battery 121 is lost by the procedure shown in FIG. It is assumed that battery 122 is in an activated state (SC111).
- the activation signal generator 141 of the ECU 140 cancels (deactivates) the activation state of the battery 121 (SA111). Thereby, the power supply of the transceiver 1215 of the battery 121 is cut off (SB111).
- ECU 140 continues that state until a predetermined time T1 elapses, and waits for the end of the initialization process of battery 121 (SA112).
- the predetermined time is set to about 1 second. Thereby, the BMU 1212 of the battery 121 loses the identification information (SB112).
- the activation signal generation unit 141 of the ECU 140 sends the activation signal ACT to the battery 121 for a predetermined time T1 to activate the battery 121 (SA113).
- the battery 121 that has received the activation signal ACT supplies power for control from the power supply unit 1216 to the BMU 1212 to turn on the power (SB113).
- the BMU 1212 performs initialization processing at startup (SB114), sets a predetermined initial value “# 1” in the identification information (ID), and stores the initial value in the storage area.
- the management unit 145 of the ECU 140 transmits temporary data to the battery 121 using the initial value identification information (SA115). Receiving this, the battery 121 responds to the temporary data message (SB115).
- the activation signal generation unit 141 of the ECU 140 notifies the battery 121 of identification information “# B1” to be given to the battery 121 (SA116).
- the BMU 1212 of the battery 121 acquires the identification information “# B1” and responds thereto (SB116).
- the BMU 1212 stores the identification information “# B1” in the storage area.
- the identification information can be reset by the above processing.
- the control system 10 has a function of managing the state of the battery 120 that is detachably mounted.
- the activation signal generation unit 141 generates an activation signal ACT for making the mounted battery 120 available.
- the management unit 145 of the ECU 140 manages the battery 120 that has received the activation signal ACT in association with the identification information of the battery 120.
- the control system 10 includes Activate lines 1217 and 1227 for electrically connecting the BMU of the battery 120 and the activation signal generation unit 141, and a CAN communication line 1218 for electrically connecting the BMU and the management unit 145. , 1228 (signal transmission line), the convenience of the electric motorcycle 1 in which the battery 120 is detachably mounted can be further enhanced.
- the management unit 145 sends the identification information of the battery 120 to the BMU via the transceiver 1215 activated by the activation signal ACT, so that the BMU acquires the identification information via the transceiver that is not activated. None do.
- the activation signal generation unit 141 generates an activation signal ACT for controlling the activation state of the battery 120 for each battery 120.
- the activation signal generation unit 141 generates a first activation signal as the activation signal ACT for the battery 121, assigns the first identification information corresponding to the first activation signal to the battery 121, and then the battery 122.
- a second activation signal may be generated as the activation signal ACT for.
- the activation signal generation unit 141 transmits the activation signal ACT to be given to the battery 120 to be activated, and then restores the activation signal ACT until the BMU 1212 of the battery 120 loses the control state. You may do it. Thus, the battery 120 can be recovered to the activated state before the battery 120 loses the identification information.
- the activation signal generation unit 141 sends an activation request signal that is delayed from the initialization request signal so that it does not overlap the initialization request signal that continues for a predetermined period of time and the transmission period of the initialization request signal.
- the activation signal ACT may be generated.
- the management unit 145 transmits the identification information of the battery 121 to the BMU 1212 of the battery 120 that has received the activation signal ACT during a period in which the initialization request signal and the activation signal ACT are not transmitted from the activation signal generation unit 141.
- the BMU 1212 and the battery 121 identification information may be associated with each other.
- the storage battery management method in the electric motorcycle 1 as described above is a method for managing the state of the detachably mounted battery 120.
- the activation signal ACT for making the battery 120 usable is generated for the mounted battery 120, and the battery 120 receives the activation signal ACT. Including the process of associating the identification information.
- the storage battery management method for the electric motorcycle 1 may further include a step of sequentially activating a plurality of batteries 120 mounted on the electric motorcycle 1 according to a predetermined order and giving identification information to the batteries 120.
- FIG. 8 is a diagram for explaining a process for activating the battery according to the embodiment.
- FIG. 8 shows, in place of FIG. 4 described above, signal transmission / reception between ECU 140, battery 121 and battery 122, and processing related to signal transmission / reception.
- the activation signal generation unit 141 of the ECU 140 sends a continuous activation signal ACT to the battery 121 to activate the battery 121 (SA311).
- ECU 140 continues that state until a predetermined time T1 elapses (SA312).
- the predetermined time is set to about 1 second.
- the battery 121 that has received the activation signal ACT supplies power for control from the power supply unit 1216 to the BMU 1212 to turn on the power (SB311).
- the BMU 1212 performs initialization processing at the time of activation (SB312), sets a predetermined initial value “# 1” in the identification information (ID), and stores the initial value in the storage area.
- the management unit 145 of the ECU 140 notifies the temporary data to the battery 121 using the identification information “# 1” given to the battery 121 as an initial value (SA313).
- the BMU 1212 of the battery 121 receives the provisional data and responds thereto (SB313).
- the management unit 145 of the ECU 140 notifies the identification information to be assigned to the battery 121 using the identification information “# 1” given to the battery 121 as an initial value (SA314).
- the BMU 1212 of the battery 121 receives the message M1, acquires the identification information “# B1”, and responds to it (SB314).
- the BMU 1212 stores the identification information “# B1” in the storage area and responds to the message M1. Through the processing so far, new identification information “# B1” is set for the battery 121.
- the ECU 140 sets the new identification information “# B2” in the battery 122 by performing the same procedure (SA321 to SA324) as the procedure from SA311 to SA314 described above.
- the processing from SC321 to SC324 in the battery 122 is the same as the processing from SB311 to SB314 in the battery 121.
- the ECU 140 can give new identification information to the battery 121 and the battery 122 for which identification information has not been set, and the identification information can be different from each other.
- the procedure shown in FIG. 8 shows a case where two batteries are controlled, but the number of batteries, the order of setting, etc. are not limited to this, and can be selected as appropriate.
- the ECU 140 and the BMU include a computer system.
- ECU140 and BMU record the program for implement
- the “computer system” may include an OS and hardware such as peripheral devices.
- the “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
- the “computer-readable recording medium” means a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time.
- the program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium.
- the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
- the program may be for realizing a part of the functions described above. Furthermore, what can implement
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Abstract
Description
本願は、2017年2月10日に出願された日本国特許出願2017-023375号に基づき優先権を主張し、その内容をここに援用する。
CAN通信規格に準じて、車両の電気的な制御を実施することが知られている。CAN通信規格によれば、各デバイス(装置)がCAN-BUS(通信線)により電気的に接続されており、信号を受信可能な装置(CAN受信部)の全てに対して、同じ信号が伝搬される。
また、特許文献1によれば、バッテリーモジュールを搭載する物理的な位置が特定され、各バッテリーモジュールの管理部(BMS)が、バッテリーモジュールを特定するための識別番号を付与するための情報を順次転送するように構成されている。この場合、特定の管理部が上記の転送を行えなくなると、その管理部より後段の管理部からの情報を得ることができない。また、管理部の個数が多くなるほど、識別情報の付与に掛かる時間が長くなり、装置が利用可能になるまでの時間が遅れて、装置の利便性が低下する場合がある。
本発明の態様は、蓄電池を着脱可能に搭載する装置の利便性をより高めることができる蓄電池管理システム、移動体、蓄電池、及び蓄電池管理方法を提供することを目的の一つとする。
以下、本発明の実施形態について、図面を参照して説明する。なお、図面は符号の向きに見るものとし、左右および前後の方向は、運転者から見た方向を意味するものとする。
スイングアーム17の後端部には、電動モータ135が設けられている。電動モータ135が出力する動力で後輪WRが回転駆動される。
搭載されたバッテリ120の状態は、制御システム10(図2)によって管理されている。
電気回路110は、バッテリ120(電源と第1スイッチ)と、コンタクタ115(第1のコンタクタ)と、PDU130(負荷)とを電気的に接続する。図2に示す接続では、バッテリ120(電源と第1スイッチ)と、コンタクタ115(第1のコンタクタ)と、PDU130(負荷)とを直列に接続した事例を示す。
バッテリ本体1211は、直列に接続された複数のセルによる2次電池を成す。
双方向スイッチ1213は、バッテリ本体1211と直列に設けられ、BMU1212の制御により、導通状態が決定される。
BMUの一例について説明する。図2に示すBMU1212は、活性化制御部1212A、電池制御部1212B、通信制御部1212Cを備える。
充電された複数のバッテリを、交換用のバッテリとして常備するバッテリステーションが知られている。バッテリステーションに保管されているバッテリには、バッテリ固有の識別情報(ID)が付与されていないことがある。
まず、バッテリ120は、充電も放電もしない待機状態である初期状態にある。BMUは、活性化信号ACTを検出すると、初期化処理を実行する状態ST1に、その制御状態を遷移させる。
この初期化状態では、BMUは、予め定められた初期化処理を実施する。BMUは、初期化処理の終了により、その制御状態を、被制御状態(状態ST2)に遷移させる。
なお、この初期化処理に掛かる時間は、予め推定することができ、例えば、時間T1に比べて十分に短いものとする。
ただし、活性化信号ACTが途絶えると、BMUは、その制御状態を、活性化信号ACTを待機する待機状態(状態ST0)に遷移させる。
被制御状態とは、ECU140からの制御に従い、電力を供給する状態と、電力の供給を制限する状態とを切換えることが可能な状態のことである。例えば、電動二輪車1は、この被制御状態にある場合、バッテリ120の電力を利用して走行できる。この被制御状態では、活性化信号ACTが有意な状態で維持されている。
ただし、活性化信号ACTが途絶えると、BMUは、その制御状態を、活性化信号ACTの回復を待機する回復待機状態(状態ST3)に遷移させる。
回復待機状態には、ノイズ又は振動などの影響により、活性化信号ACTが有意ではないと判定された状態などが含まれる。活性化信号ACTが有意な状態に所定の時間が経過するまでに回復することで、活性化信号ACTが有意ではない状態が所定の時間以上継続しない場合には、BMUは、その制御状態を、被制御状態(状態ST2)に遷移させる。
図4は、ECU140とバッテリ121とバッテリ122との間の信号の授受と、信号の授受に関する処理とを示す。
ここまでの処理により、バッテリ121に新たな識別情報「#B1」が設定される。
第2の実施形態について説明する。第1の実施形態では、複数のバッテリの初期化処理を並行して実施する事例について説明した。これに代えて、本実施形態では、複数のバッテリの初期化処理を順次実施する事例について説明する。
ここまでの処理により、バッテリ121に対して新たな識別情報「#B1」が設定される。
10・・・制御システム(蓄電池管理システム)
110・・・電気回路
115・・・コンタクタ
120、121、122・・・バッテリ
120C・・・バッテリ収納部
130・・・PDU(負荷)
135・・・電動モータ
140・・・ECU
160・・・サブバッテリ
180・・・スロットル(アクセル)センサ
1211、1221・・・バッテリ本体(電源)
1212、1222・・・BMU
1213、1223・・・双方向スイッチ(第1のスイッチ)
1214、1224・・・絶縁部
1215、1225・・・CAN-BUSトランシーバ(通信IF部)
1217、1227・・・Activate線(活性化信号送信線)
1218、1228・・・CAN通信線(信号送信線)。
Claims (11)
- 着脱可能に搭載された蓄電池の状態を管理する蓄電池管理システムであって、
搭載している蓄電池を利用可能な状態にするための活性化信号を生成する活性化信号生成部と;
前記活性化信号を受けた蓄電池と前記蓄電池の識別情報とを対応付けて管理する管理部と;
前記蓄電池の蓄電池管理部と前記活性化信号処理部とを電気的に接続するための活性化信号送信線と;
前記蓄電池管理部と前記管理部とを電気的に接続するための信号送信線と;
を備える蓄電池管理システム。 - 前記管理部は、
前記活性化信号により活性化される通信IF部を介して、前記蓄電池の識別情報を前記蓄電池に送る、
請求項1に記載の蓄電池管理システム。 - 前記活性化信号生成部は、
前記蓄電池ごとに前記蓄電池の活性化状態を制御するための前記活性化信号を生成する、
請求項1又は請求項2記載の蓄電池管理システム。 - 前記活性化信号生成部は、
第1の蓄電池に対する前記活性化信号として第1活性化信号を生成し、
前記第1活性化信号に対応する第1識別情報を前記第1の蓄電池に付与した後に、第2の蓄電池に対する前記活性化信号として第2活性化信号を生成する、
請求項1から請求項3の何れか1項記載の蓄電池管理システム。 - 前記活性化信号生成部は、
活性化させる対象の前記蓄電池に与えるための前記活性化信号を送信した後、前記蓄電池の蓄電池管理部が制御状態を喪失するまでに前記活性化信号を回復させる、
請求項1から請求項4の何れか1項記載の蓄電池管理システム。 - 前記活性化信号生成部は、
予め定められた所定時間継続する初期化要求信号と、前記初期化要求信号の送出期間と重ならないように前記初期化要求信号から遅れて送出される前記活性化信号とを生成する、
請求項5に記載の蓄電池管理システム。 - 前記管理部は、
前記活性化信号生成部から前記初期化要求信号と前記活性化信号が送出されていない期間に、前記活性化信号を受けた蓄電池の蓄電池管理部に、前記蓄電池の識別情報を付与して前記蓄電池管理部と前記蓄電池の識別情報とを対応付ける、
請求項6に記載の蓄電池管理システム。 - 着脱可能に搭載された蓄電池の状態を管理する移動体であって、
搭載している蓄電池に対し、前記蓄電池を利用可能な状態にするための活性化信号を生成する活性化信号生成部と;
前記活性化信号を受けた蓄電池の蓄電池管理部に、前記蓄電池の識別情報を対応付ける管理部と;
前記蓄電池の蓄電池管理部と前記活性化信号処理部とを電気的に接続するための活性化信号送信線と;
前記蓄電池管理部と前記管理部とを電気的に接続するための信号送信線と;
前記蓄電池からの電力により駆動される駆動部と;
を備える移動体。 - 装置に着脱可能に搭載される蓄電池であって、
装置から活性化信号を受け、前記活性化信号によって活性化される通信IF部と;
前記活性化信号により活性化された状態で前記蓄電池の識別情報を前記装置から取得する蓄電池管理部と;
を備える蓄電池。 - 着脱可能に搭載された蓄電池の状態を管理するための蓄電池管理方法であって、
搭載している蓄電池に対し、前記蓄電池を利用可能な状態にするための活性化信号を生成することと;
前記活性化信号を受けた蓄電池の蓄電池管理部に、前記蓄電池の識別情報を対応付けることと;
を含む蓄電池管理方法。 - 移動体に搭載された前記複数の蓄電池を所定の順序に従い順に活性化することと;
前記蓄電池に前記識別情報を付与することと;
を含む請求項10に記載の蓄電池管理方法。
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PH12019501772A1 (en) | 2020-06-15 |
CN110235335A (zh) | 2019-09-13 |
US20190386496A1 (en) | 2019-12-19 |
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