WO2021215426A1 - Bloc-batterie de véhicule à selle et véhicule à selle - Google Patents

Bloc-batterie de véhicule à selle et véhicule à selle Download PDF

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Publication number
WO2021215426A1
WO2021215426A1 PCT/JP2021/015985 JP2021015985W WO2021215426A1 WO 2021215426 A1 WO2021215426 A1 WO 2021215426A1 JP 2021015985 W JP2021015985 W JP 2021015985W WO 2021215426 A1 WO2021215426 A1 WO 2021215426A1
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WIPO (PCT)
Prior art keywords
saddle
battery pack
vehicle battery
type vehicle
lithium
Prior art date
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PCT/JP2021/015985
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English (en)
Japanese (ja)
Inventor
日野　陽至
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ヤマハ発動機株式会社
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Filing date
Publication date
Application filed by ヤマハ発動機株式会社 filed Critical ヤマハ発動機株式会社
Priority to GB2215467.8A priority Critical patent/GB2608955A/en
Priority to DE112021002462.0T priority patent/DE112021002462T5/de
Priority to FR2104218A priority patent/FR3109674A1/fr
Priority to TW110114505A priority patent/TWI832046B/zh
Publication of WO2021215426A1 publication Critical patent/WO2021215426A1/fr

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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
    • B60L50/64—Constructional details of batteries specially adapted for electric 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
    • 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 saddle-mounted vehicle battery pack and a saddle-mounted vehicle.
  • Patent Document 1 discloses a battery pack used in a saddle-mounted vehicle.
  • the saddle-mounted vehicle of Patent Document 1 is a vehicle that does not have an engine.
  • Patent Document 1 describes an electric motorcycle as an example of a saddle-mounted vehicle.
  • the battery pack of Patent Document 1 is provided in a saddle-mounted vehicle which is a saddle-mounted vehicle.
  • the battery pack of Patent Document 1 includes a plurality of cases for accommodating a battery unit. A heat dissipation space is formed between some of the plurality of cases. As a result, in the technique of Patent Document 1, heat dissipation is increased while increasing the energy capacity of the battery pack.
  • the saddle-type vehicle battery pack used for the saddle-type vehicle be miniaturized with a simple configuration in order to improve the mountability on the vehicle. Further, it is desired that the saddle-type vehicle battery pack used for the saddle-type vehicle can be charged with electric power capable of increasing the driving force of the saddle-type vehicle in a short time.
  • An object of the present invention is to provide a saddle-type vehicle battery pack that can be miniaturized with a simple configuration and can be charged with electric power that can increase the driving force of a saddle-type vehicle in a short time.
  • the present inventors examined the characteristics of a saddle-type vehicle battery pack suitable for a saddle-type vehicle.
  • the saddle-mounted vehicle is configured so that the posture of the vehicle is controlled by the weight shift of the driver during traveling.
  • Japanese Patent Application Laid-Open No. 2014-180185 discloses a battery module for an EV forklift.
  • a forklift is a vehicle whose main purpose is to lift and transport heavy objects.
  • the forklift is not configured so that the attitude of the vehicle is controlled by the weight shift of the driver.
  • the weight of the forklift is distributed so that the weight balance is maintained while carrying heavy objects.
  • the saddle-mounted vehicle tends to be required to be small from the viewpoint of the above-mentioned operability and running performance.
  • the weight ratio of the saddle-type vehicle battery pack to the entire saddle-type vehicle is larger than that of other mounted parts.
  • the saddle-type vehicle battery pack used in the saddle-type vehicle is required to be small while receiving and outputting electric power for increasing the driving force.
  • the battery pack of Patent Document 1 has a plurality of batteries.
  • the battery pack of Patent Document 1 has a control unit.
  • the control unit is a battery management controller (BMC) having a CPU and a memory.
  • the control unit monitors and controls the state of charge of the batteries connected in parallel.
  • the control unit is connected to each battery of the battery pack by an electric wire.
  • the control unit monitors the status of each battery.
  • This control unit centrally controls each battery. That is, the information indicating the state of each battery from each battery is concentrated in the control unit.
  • the control unit controls each battery based on the concentrated information. More specifically, the control unit connected to each battery and having a CPU and a memory centrally monitors the state of each battery by detecting the temperature, current, voltage, frequency of use, etc. in each battery, and also monitors each battery. Control the battery.
  • each of the batteries connected in parallel has variations in characteristics such as internal resistance due to the state of the electrodes and the state of the electrolyte.
  • characteristics such as internal resistance due to the state of the electrodes and the state of the electrolyte.
  • the control unit controls the charge amount of batteries that tend to have different charge amounts due to the parallel connection by detecting the state of each battery.
  • the present inventor has examined various configurations of a saddle-mounted vehicle battery pack suitable for a saddle-mounted vehicle.
  • the present inventor sets the charging voltage of the saddle-mounted vehicle battery pack to 12 V or more and 60 V or less, and charges 2.5 Ah or more by intentionally connecting a plurality of lithium-ion batteries in series without connecting them in parallel. It was considered to construct a saddle-type battery pack having a capacity.
  • a plate-shaped bus bar having a length, a width, and a thickness and a thickness smaller than any of the length and the width for connecting a plurality of lithium ion batteries in series.
  • the present inventor has found that, with this configuration, the saddle-mounted vehicle battery pack can be miniaturized with a simple configuration and can be charged in a short time.
  • the saddle-type vehicle battery pack charges electric power suitable for increasing the driving force of the saddle-type vehicle. be able to.
  • the current flowing through each lithium-ion battery during charging is substantially equal. That is, the currents flowing through each lithium-ion battery are substantially equal regardless of the internal resistance of each lithium-ion battery. Therefore, it is easy to maintain the balance of the charge amount in each lithium ion battery. Therefore, for example, the circuit for controlling the current, voltage, or temperature of each lithium ion battery can be simplified or deleted. For example, it is possible to keep the balance of the charge amount in each lithium ion battery without a control device for monitoring and controlling the state of the lithium ion batteries connected in parallel. Therefore, a small saddle-mounted vehicle battery pack can be realized with a simple configuration.
  • the maximum voltage that the saddle-mounted vehicle battery pack can charge is 20 V or more and 60 V or less.
  • the maximum voltage applied to both ends of the plurality of lithium ion batteries connected in series is 60 V or less. Therefore, the saddle-type vehicle battery pack is within the range belonging to the "extra low voltage" (ELV or safety extra low voltage: SELV) in the standard IEC60950 of the International Electrotechnical Commission (IEC). Operate. Since the voltage of the saddle-type vehicle battery pack is low, the insulation structure can be made simpler than that for high voltage.
  • ELV extra low voltage
  • IEC60950 International Electrotechnical Commission
  • the voltage applied to both ends of a plurality of lithium ion batteries connected in series is a low voltage belonging to the "extra low voltage". Therefore, for example, a smaller number of lithium-ion batteries can be connected in series than in the case of belonging to a voltage range higher than the "extra-low voltage" voltage. Therefore, for example, it is possible to reduce variations in the charging capacity characteristics of each lithium-ion battery included in the saddle-type vehicle battery pack, as compared with the case where many lithium-ion batteries are used to cope with high voltage. be. From this, the circuit to monitor and control can be further simplified or deleted. Therefore, a small saddle-mounted vehicle battery pack can be realized with a simple configuration.
  • Each of the plurality of lithium-ion batteries is connected in series by a bus bar.
  • the electrical connector is attached to the case. Therefore, the electrical connector can also be connected by the bus bar.
  • Basba is plate-shaped with length, width, and thickness. The thickness is less than either the length or the width.
  • the battery module shown in Japanese Patent Application Laid-Open No. 2014-180185 described above is a forklift module used in business. The battery module of a forklift is charged, for example, during non-business hours. The battery module of a forklift is not expected to have a short charging time for high current charging, and neither bus bar nor structure of bus bar is shown.
  • the shape and arrangement of the bus bar are simpler than, for example, a combination of parallel connection and series connection of a plurality of lithium ion batteries. It is possible to reduce the size of the battery arrangement area. Therefore, a saddle-type vehicle battery pack can be realized without a control device for monitoring and controlling the state of the lithium ion batteries connected in parallel.
  • the bus bar has a smaller electric resistance than a wire having the same conductor diameter as the thickness of the bus bar and having the same length as the bus bar, for example. Therefore, when the charging current of the lithium ion batteries connected in series flows through the bus bar, the amount of heat generated from the bus bar itself is further suppressed.
  • the structure for heat dissipation associated with charging with a large current can be simplified and miniaturized. Therefore, it is possible to charge with a large current without connecting a plurality of lithium ion batteries in parallel. This makes it possible, for example, to charge an electric vehicle equipped with a saddle-mounted vehicle battery pack in a time close to the time required for replenishing liquid fuel in a conventional or current gas station. Therefore, it is not necessary to occupy the charging station for a long time.
  • the saddle-mounted vehicle battery pack according to each viewpoint of the present invention completed based on the above findings has the following configurations.
  • a saddle-type vehicle battery pack used for a saddle-type vehicle is With multiple lithium-ion batteries A case accommodating the plurality of lithium ion batteries and An electrical connection connector attached to the case, which is connected to a mating connector provided on the vehicle body of the saddle-type vehicle and transmits a current input / output to the vehicle body.
  • the saddle-type vehicle battery pack has a charge capacity of 2.5 Ah or more and a maximum of 12 V or more and 60 V or less so as to receive and output electric power to be converted into electric power to increase the driving force of the saddle-type vehicle.
  • It has a charging voltage and a plate-shaped bus bar that connects the electric connection connector and the plurality of lithium-ion batteries in series without parallel connection, and the plate-shaped bus bar increases the driving force of the saddle-type vehicle. It has a width and a thickness such that the electric power of 12V or more and 60V or less is charged by a current flowing through one path formed by the series connection.
  • the saddle-mounted vehicle battery pack in the above configuration includes a plurality of lithium-ion batteries, a case, an electric connector, and a bus bar.
  • the electrical connector is attached to the case.
  • the electrical connector is connected to a mating connector provided on the vehicle body.
  • the bus bar connects the connector and a plurality of lithium-ion batteries in series without parallel connection.
  • the saddle-mounted vehicle battery pack has a charging capacity of 2.5 Ah or more and a maximum charging voltage of 12 V or more and 60 V or less. As a result, the saddle-type vehicle battery pack receives and outputs electric power that is converted into electric power to increase the driving force of the saddle-type vehicle.
  • Basba is plate-shaped.
  • the bus bar has a width and thickness such that the electric power for increasing the driving force of the saddle-type vehicle is charged by the electric current flowing through one path formed by the series connection.
  • the bus bar has a width and a thickness such that the electric power is charged by a current flowing through the above one path under a maximum charging voltage of 12 V or more and 60 V or less.
  • the electrical resistance of the bus bar is smaller than, for example, a wire having the same conductor diameter as the bus bar thickness and the same length as the bus bar. Therefore, when a current flows through one path formed by connecting the lithium ion battery and the electric connector in series, the amount of heat generated from the bus bar itself can be further suppressed.
  • the saddle-mounted vehicle battery pack has a charging capacity of 2.5 Ah or more because the bus bar connects a plurality of lithium-ion batteries in series without parallel connection. Further, the saddle-mounted vehicle battery pack has a maximum charging voltage of 12 V or more and 60 V or less as a voltage corresponding to the voltage across the series connection. 12V is the lower limit of the voltage widely used as the voltage of the power source that contributes to the increase in the driving force of the saddle-type vehicle.
  • the charging capacity of 2.5 Ah or more corresponds to the electric power that can increase the driving force of the saddle-type vehicle, unlike the capacity for operating a low-power device such as a mobile phone.
  • the saddle-type vehicle battery pack receives and outputs electric power capable of increasing the driving force of the saddle-type vehicle by having a charge capacity of 2.5 Ah or more and a maximum charge voltage of 12 V or more and 60 V or less. be able to.
  • the arrangement of the bus bar can be simplified as compared with the case where parallel connection and series connection are mixed, for example.
  • the current flowing through the lithium-ion batteries connected in parallel during charging differs depending on the internal resistance of each lithium-ion battery. That is, the charge amount of each lithium ion battery is different from each other.
  • the bus bar having the above-mentioned structure can charge the electric power adapted to the increase in the driving force of the saddle-type vehicle in a short time while reducing the size.
  • a plurality of lithium-ion batteries are connected in series by a bus bar without being connected in parallel with each other.
  • the current received by the parallel-connected lithium-ion batteries when connected to a power source for charging differs depending on the internal resistance of each lithium-ion battery. That is, the charge amount of each lithium ion battery is different from each other.
  • the currents received by each lithium-ion battery during charging are substantially equal. Therefore, it is easy to maintain the balance of the charge amount in each lithium ion battery.
  • a saddle-type vehicle battery pack can be realized without a control device for monitoring and controlling the state of the lithium ion batteries connected in parallel.
  • the bus bar connects the connector and a plurality of lithium-ion batteries in series without parallel connection. Therefore, for example, as compared with the case of combining the parallel connection and the series connection of a plurality of lithium ion batteries, the respective shapes of the bus bars and their mutual arrangement are simplified. Therefore, the arrangement area of the bus bar can be reduced.
  • the plurality of lithium ion batteries are configured to be connected in series without being connected in parallel to each other, and the maximum voltage for charging the saddle-type vehicle battery pack is 20 V or more and 60 V or less. In this case, the maximum voltage applied to both ends of the plurality of lithium ion batteries connected in series is 60 V or less. Therefore, the saddle-type vehicle battery pack is within the range belonging to the "extra low voltage" (ELV or safety extra low voltage: SELV) in the standard IEC60950 of the International Electrotechnical Commission (IEC). Operate. Since the voltage of the saddle-type vehicle battery pack is low, the insulation structure can be made simpler than that for high voltage. Therefore, the saddle-mounted vehicle battery pack can be miniaturized.
  • ELV extra low voltage
  • SELV safety extra low voltage
  • the voltage applied to both ends of a plurality of lithium ion batteries connected in series is a low voltage belonging to the "extra low voltage". Therefore, for example, a smaller number of lithium-ion batteries can be connected in series than in the case of belonging to a voltage range higher than the "extra-low voltage" voltage. Therefore, for example, it is possible to reduce variations in the charging capacity characteristics of each lithium-ion battery included in the saddle-type vehicle battery pack, as compared with the case where many lithium-ion batteries are used to cope with high voltage. be. From this, for example, the circuit for monitoring the charge amount of each lithium ion battery can be simplified or deleted. Therefore, a small saddle-mounted vehicle battery pack can be realized with a simple configuration.
  • the saddle-mounted vehicle battery pack has a maximum charging voltage of 60 V or less and a charging capacity of 2.5 Ah or more by the series connection without parallel by the bus bar. As a result, it is possible to charge electric power corresponding to the driving force of the saddle-type vehicle.
  • the wiring structure is simplified by connecting multiple lithium-ion batteries in series without paralleling with a bus bar having a width and thickness that allows charging with the current flowing through the above one path under a maximum charging voltage of 60 V or less.
  • the structure for heat dissipation by charging with a large current can be simplified.
  • the insulating structure can be simplified.
  • a small saddle-mounted vehicle battery pack can be realized with a simple configuration.
  • the saddle-type vehicle battery pack can be charged in a short time. Therefore, it is possible to realize a saddle-type vehicle battery pack that has a simple configuration, is small in size, and can charge electric power that can increase the driving force of the saddle-type vehicle in a short time.
  • the saddle-mounted vehicle battery pack can adopt the following configuration.
  • Each of the plurality of lithium ion batteries has an independent negative electrode, and the independent negative electrode contains at least one selected from the group consisting of spinnel-type lithium titanate, niobium titanium-containing composite oxide, and graphite.
  • each of the plurality of lithium ion batteries has an independent negative electrode. Due to the non-parallel structure, each of the negative electrodes is electrically independent of the other negative electrodes. Each of the negative electrodes is not electrically connected to the other independent negative electrode. Each of these negative electrodes contains at least one selected from the group consisting of spinel-type lithium titanate, niobium-titanium-containing composite oxides, and graphite. A negative electrode containing at least one selected from the group consisting of spinel-type lithium titanate, niobium-titanium-containing composite oxide, and graphite is such that lithium precipitation occurs in the negative electrode as described in Japanese Patent Application Laid-Open No. 2015-153719.
  • the circuit for monitoring the charge state of each lithium ion battery can be simplified or deleted.
  • the bus bar connects such a lithium ion battery without electrically connecting the independent negative electrode to the other independent negative electrode. Therefore, the structure of the bus bar can be simplified as compared with the case where parallel connection and series connection are combined, for example.
  • the circuit for monitoring and controlling each lithium-ion battery can be further simplified or deleted.
  • the conductor for detection can be reduced or deleted in order to detect the state of charge of each lithium ion battery connected to each lithium ion battery.
  • Wiring including the bus bar can be further simplified. Therefore, it is possible to realize a saddle-type vehicle battery pack that can be miniaturized and can be charged in a short time with a simpler configuration.
  • the saddle-mounted vehicle battery pack can adopt the following configuration.
  • a current circuit breaker that is connected in series with the electrical connection connector and the plurality of lithium ion batteries and cuts off the current flowing through the plurality of lithium ion batteries is provided.
  • the electrical connector carelessly contacts the conductor outside the saddle-type vehicle battery pack, resulting in a large current due to a short circuit. It is possible to suppress the situation where the conductor is welded to the electrical connection connector. Therefore, it is possible to simplify or delete the control device and suppress the situation where, for example, an external conductor is welded to the electrical connector with a simple configuration.
  • the battery pack can adopt the following configuration.
  • a data output unit for outputting specification data for specifying the electrical specifications of the saddle-type vehicle battery pack is provided inside the case.
  • the electrical connection connector includes a data communication terminal that outputs the specification data to the outside of the saddle-type vehicle battery pack.
  • the specification data for specifying the electrical specifications of the saddle-type vehicle battery pack can be obtained from the saddle-type vehicle battery pack via the electrical connector. It is output to the outside. Therefore, for example, it is possible to supply a charging current according to the specifications of the saddle-mounted vehicle battery pack from the outside. Therefore, the lithium-ion battery can be charged according to the specifications regardless of whether a control device for adjusting the amount of charging current supplied from the outside is provided inside the saddle-type vehicle battery pack or not. It can be charged with electric current.
  • the battery pack can adopt the following configuration. (5) A saddle-mounted vehicle battery pack according to any one of (1) to (4). A charging-dedicated connector for directly taking a charging current into the saddle-mounted vehicle battery pack from the outside of the saddle-mounted vehicle battery pack provided with the saddle-mounted vehicle battery pack is attached to the case.
  • the charging current can be directly taken into the saddle-type vehicle battery pack from the outside of the saddle-type vehicle without replacing the connection partner of the electric connection connector.
  • the saddle-mounted vehicle can adopt the following configuration. (6) It is a saddle-mounted vehicle.
  • the saddle-mounted vehicle is The saddle-mounted vehicle battery pack of any one of (1) to (5) and A mating connector configured to be connected to the electrical connector of the saddle-mounted vehicle battery pack, With the drive wheels It is configured to control the power supply from the saddle-type vehicle battery pack to the motor via the mating connector and the power supply from the motor to the saddle-mounted vehicle battery pack via the mating connector.
  • Motor controller and The motor is provided with the motor configured to drive the drive wheels with electric power supplied from the motor control device, while generating electric power by driving the drive wheels.
  • At least one parameter of the current, voltage or temperature detected from each of the plurality of lithium ion batteries is acquired, and based on the acquired at least one parameter, among the plurality of lithium ion batteries. It does not have a control device configured to change the voltage and / or current of at least one lithium-ion battery.
  • the saddle-mounted vehicle can adopt the following configuration.
  • the saddle-mounted vehicle of (6) is A steering bar handle provided so as to extend in the left-right direction of the saddle-mounted vehicle, and Equipped with a saddle configured for the driver to sit across As a lean vehicle, the driver who grips the bar handle at the time of turning is configured to turn by shifting the weight so as to lean inward of the curve.
  • the saddle-type vehicle can increase the driving force of the saddle-type vehicle with the electric power stored in the battery pack.
  • the electric power referred to here includes, for example, at least the chemical energy stored in the secondary battery pack.
  • a saddle-mounted vehicle may also be provided with a capacitor and may be configured to run on the electrophysical energy stored in the capacitor in addition to the chemical energy.
  • a saddle-mounted vehicle is, for example, a vehicle that does not have an engine.
  • the saddle-mounted vehicle is, for example, a pure electric saddle-mounted vehicle.
  • the saddle-mounted vehicle is not limited to this, and a vehicle equipped with an engine as an internal combustion engine may be used.
  • a plug-in hybrid vehicle having a function of charging with electric power supplied from the outside of the vehicle and capable of running on an engine mounted on the vehicle is included in a saddle-mounted vehicle.
  • the saddle-type vehicle battery pack is charged by the electric power generated by the motor driven by the drive wheels when the saddle-type vehicle runs. Further, the saddle-mounted vehicle battery pack is connected to a charging device provided outside the saddle-mounted vehicle and charged. Further, when the saddle-type vehicle battery pack is used for a saddle-type vehicle equipped with an engine, the saddle-type vehicle battery pack is charged by the electric power of a generator driven by the engine.
  • a saddle-riding vehicle is a vehicle that rides in a riding style. The driver sits across the saddle of a saddle-mounted vehicle.
  • the saddle-mounted vehicle is, for example, a lean vehicle.
  • Examples of the saddle-type vehicle include a scooter type, a moped type, an off-road type, and an on-road type motorcycle.
  • the saddle-mounted vehicle is not limited to a motorcycle, and may be, for example, an ATV (All-Terrain Vehicle) or the like, or may be a motorcycle.
  • a tricycle may have two front wheels and one rear wheel, or may have one front wheel and two rear wheels.
  • the saddle-type vehicle battery pack is a battery pack used for a saddle-type vehicle.
  • the saddle-mounted vehicle battery pack is a pack in which a plurality of lithium-ion batteries are integrally combined.
  • the saddle-type vehicle battery pack is mounted on the body of the saddle-type vehicle.
  • the saddle-mounted vehicle battery pack is, for example, mounted on the vehicle body in a non-replaceable manner.
  • the saddle-mounted vehicle battery pack is not particularly limited, and may be replaceably mounted on the vehicle body, for example.
  • the saddle-mounted vehicle battery pack may be removable from the vehicle body without a tool other than a key, such as a spanner, or may be replaceable with respect to the vehicle body by using a tool such as a spanner.
  • the saddle-mounted vehicle battery pack does not have to have a monitor circuit for each lithium-ion battery, for example.
  • the monitor circuit referred to here is a circuit for measuring at least one parameter selected from a parameter group consisting of voltage, current and temperature and outputting the at least one parameter to the outside. Examples of the monitor circuit include a voltage detection circuit, a current detection circuit, and a temperature detection circuit.
  • the saddle-type vehicle battery pack may not have a voltage detection circuit for each lithium-ion battery, for example. In this case, the saddle-type vehicle battery pack may have a monitor circuit for other parameters (for example, current and / or temperature) for each lithium-ion battery, for example, and a voltage detection circuit for the entire plurality of lithium-ion batteries. May have.
  • Lithium-ion batteries are batteries that can be charged and discharged.
  • a lithium ion battery is a secondary battery that charges and discharges by a chemical reaction of electrodes.
  • Lithium-ion batteries are charged and discharged by oxidation and reduction reactions of electrodes.
  • Lithium-ion batteries convert stored chemical energy into electrical energy.
  • the terminal voltage of a lithium-ion battery is not proportional to the amount of power stored in the battery.
  • lithium ion capacitors are not included in lithium ion batteries.
  • Lithium-ion batteries contain a lithium oxide in the positive electrode. Lithium batteries that use lithium metal for the positive electrode are not included in lithium ion batteries.
  • the lithium ion battery is a non-aqueous lithium ion battery that uses a non-aqueous electrolyte such as an organic solvent.
  • a lithium-ion battery is a battery that can store electric power for driving a motor of a saddle-type vehicle.
  • the lithium-ion battery can store electric power supplied from the outside of the saddle-type vehicle. Further, the lithium ion battery can store the electric power supplied from the motor when the motor of the saddle-type vehicle generates electric power. That is, the regenerative current of the motor can be stored.
  • the lithium ion battery for example, a lithium ion battery having a continuous maximum charging rate of 10 C or more can be used. Further, as the lithium ion battery, for example, a lithium ion battery having a continuous maximum charging rate of 20 C or more can be used. Furthermore, as the lithium ion battery, for example, a lithium ion battery having a continuous maximum charging rate of 40 C or more can be used. However, the lithium ion battery may have a continuous maximum charging rate of, for example, 10 C or less.
  • the maximum charging rate is the maximum maximum charging rate allowed by a lithium-ion battery or a saddle-type vehicle battery pack.
  • the maximum charging rate represents the speed of charging.
  • the unit is C. In the case of constant current charge measurement, the magnitude of the current that fully charges the capacity of the battery in one hour is defined as 1C. For example, when the capacity of the battery is 2.5Ah, 1C is 2.5A.
  • the capacity or charge capacity of a battery is the amount of power that can be charged to the battery.
  • the unit is Ah.
  • the charge capacity is equal to the discharge capacity.
  • the discharge capacity is, for example, the time cumulative amount of the output current from the time when the fully charged battery starts to output the current together with the output of the initial voltage to the time when the output voltage reaches the final voltage.
  • the discharge condition is, for example, the discharge of a current that reaches the final voltage after 10 hours of discharge (10-hour rate).
  • the saddle-mounted vehicle battery pack consists of a series connection of lithium-ion batteries. Therefore, the discharge voltage, which is a condition of the discharge capacity, differs depending on the number of lithium ion batteries contained in the saddle-type vehicle battery pack.
  • the discharge capacity is determined regardless of the number of lithium-ion batteries.
  • the saddle-type vehicle battery pack has a charging capacity of 2.5 Ah or more, it is possible to charge or discharge electric power suitable for increasing the driving force of the saddle-type vehicle.
  • the saddle-type vehicle battery pack 1 has an output voltage of 12 V and a charging capacity of 2.5 Ah, outputting a current of 50 A for 20 seconds corresponds to about 10% power consumption. This consumption enables driving force assist of about 600 W, that is, simply about 0.8 ps, for 20 seconds.
  • the charging capacity of 2.5 Ah or more is such that 50% of the charging capacity can be used to continuously increase the driving force for 20 seconds at least five times without charging.
  • a saddle-type vehicle battery pack having a charging capacity of 2.5 Ah or more is smaller than a device for charging electrophysical energy such as a capacitor.
  • the electrical connector transmits the current input and output to the vehicle body.
  • the electrical connector transmits the current output to the motor of the saddle-type vehicle.
  • the electric connector transmits the current supplied from the motor when the motor of the saddle-type vehicle generates electricity.
  • the electrical connector may be used as a connector for transmitting a current supplied from the outside of the saddle-type vehicle.
  • the electrical connection connector may be provided as a connector different from the connector that transmits the current supplied from the outside of the saddle-type vehicle.
  • the electrical connector is attached to the case.
  • the electrical connector is not provided away from the case.
  • the connector provided at the tip of a flexible cable extending outward from the case is different from the electrical connector of the present invention.
  • the electrical connector is attached, for example, so as to fit into an opening provided in the case.
  • the electrical connector may be attached to the vehicle body (for example, the vehicle body cover) as well as to the case, for example.
  • a lid that can be opened and closed is provided at a position corresponding to the electrical connection connector attached to the case, and the electrical connection connector is configured to be accessible from the outside by opening the lid. May be good.
  • the bus bar is a member that transmits an electric current.
  • Basba is made of metal.
  • the bus bar is made of, for example, a copper or aluminum material.
  • the bus bar is coupled with a lithium-ion battery or electrical connector. All the wiring that connects the lithium-ion battery and the electrical connector in series consists of a bus bar.
  • Wiring is an electrical component whose main purpose is to transmit electric current.
  • the series connection path may include electrical components such as a fuse for the purpose of suppressing overcurrent or a switch for the purpose of switching the current path.
  • Basba has a length, width, and thickness. The length is a dimension in the direction intersecting the extending direction through the two coupling portions, that is, the coupling portion with the lithium ion battery or the electric connector.
  • the width is a dimension in the direction intersecting the stretching direction.
  • the thickness is a dimension in the direction intersecting the stretching direction and the width direction.
  • the width and thickness are dimensions in the direction intersecting the stretching direction.
  • the length is smaller than the width.
  • the thickness is smaller than the width.
  • the bus bar is, for example, plate-shaped. That is, the bus bar may be, for example, flat, and may be bent over the entire surface or at at least one point.
  • the bus bar has two planes parallel to each other along both the length and width directions. In other words, the bass bar has two surfaces that intersect in the thickness direction and are parallel to each other. Further, the width of the bus bar may be uniform or may change in the middle. Basba is, for example, a stamped product.
  • the lead wire is not included in the bus bar.
  • Basba has, for example, no insulation coating.
  • the bus bar has such rigidity that it can maintain its shape in the air, for example, in a state of being fixed with electrical connections at a plurality of locations (for example, two locations).
  • the bus bar has rigidity capable of supporting the weight of the bus bar itself so as not to substantially swing, deform or displace due to vibration during traveling of the saddle-type vehicle, for example. For example, a conductor that is deformed by the weight of the conductor itself when not connected to the other party and cannot maintain the connection position with the other party is not included in the bus bar.
  • the bus bar has rigidity so that, for example, the relative positional relationship with the case itself or the equipment or parts in the case can be substantially maintained even when the saddle-mounted vehicle is running.
  • the bus bar has a rigidity that allows two electrically connected lithium-ion batteries to be mechanically and integrally connected.
  • the bass bar has a thickness sufficient to have such rigidity.
  • the bus bar is not limited to this, and may have an insulating coating in part.
  • the bus bar is welded together, for example, with a lithium ion battery and an electrical connector.
  • the bus bar may be connected to, for example, a lithium ion battery and an electric connector with bolts or nuts.
  • the bus bar may be coupled, for example, to the terminals of the lithium ion battery and the terminals of the electrical connector with bolts or nuts.
  • the width of the bus bar is larger than the diameter of the bolt or nut.
  • the width of the bus bar is, for example, larger than the diameter of the bolt or nut of the electrical connector.
  • the width of the bus bar is, for example, larger than the width of the terminal of the lithium ion battery.
  • the bus bar is not limited to this, and may have a width smaller than the width of the terminal of the lithium ion battery, for example.
  • the bus bars may be joined by soldering, for example.
  • a strength specification based on the bus bar's industrial standard can be applied.
  • the bus bar has a thickness of 0.5 mm or more, it is easy to obtain a bus bar having rigidity based on the standard.
  • the cross-sectional area of the bus bar when outputting a current of 50 A is about 20 square mm based on the industrial standard.
  • the width of the bus bar having a thickness of 0.5 mm or more can be suppressed to about 40 mm or less. Considering the size of the battery, the degree of freedom in arranging the bus bars is high while suppressing the distance between the bus bars.
  • the specifications of the components based on the Japanese Industrial Standards of the bass bar can be applied. Therefore, when the bus bar has a thickness of 2 mm or more, it is easy to maintain the shape of the bus bar itself and the distance between the lithium ion batteries to which the bus bar is connected, and it is easy to obtain higher rigidity. In addition, it is easy to obtain a bus bar having strength based on the standard.
  • the thickness of the bass bar is not particularly limited, and may be less than 0.5 mm, for example.
  • the width and thickness of the bus bar are set so as to charge with a current flowing through one path formed by the series connection under a maximum charging voltage of 12 V or more and 60 V or less. For example, assuming a current of 50 A, the bus bar has a width and thickness such that it has a cross-sectional area of 20 mm2 or more.
  • the data communication terminal may be integrated with, for example, an electrical connector. However, the data communication terminal is not limited to this, and may be provided independently of the electrical connector.
  • the data for specifying the specifications of the saddle-type vehicle battery pack is, for example, data representing the maximum charging current of the saddle-type vehicle battery pack.
  • the data is not particularly limited, and may be, for example, data that identifies the saddle-type vehicle battery pack or data that identifies the type of the saddle-type vehicle battery pack. In this case, the maximum charging current information is obtained by referring to the database based on the data identified by the external device.
  • the data communication terminal is, for example, built in a saddle-mounted vehicle battery pack and is electrically connected to a data output unit that stores data for specifying specifications.
  • the data output unit connected to the data communication terminal may be mounted outside the saddle-type vehicle battery pack, for example, in a saddle-type vehicle.
  • the data output unit stores data for specifying the specifications of the saddle-mounted vehicle battery pack.
  • the data output unit is built into the saddle-mounted vehicle battery pack.
  • connection includes a state in which an electrical component is inserted in the middle.
  • electrical components include switches, relays, resistors, connection terminals, and fuses.
  • the electric power output by the saddle-type vehicle battery pack at the time of discharge is converted into power. It means that it contributes to the increase of the driving force of the saddle-mounted vehicle.
  • Electric power is converted into power by, for example, a motor.
  • the converted power is finally transmitted to the wheels.
  • a saddle-type vehicle is a pure electric vehicle that mainly runs on electric power charged in a saddle-type vehicle battery pack.
  • the increase in driving force of a saddle-type vehicle depends on the electric power charged in the saddle-type vehicle battery pack.
  • the saddle-mounted vehicle is not particularly limited and may have an engine as an internal combustion engine.
  • the electric power may be converted into power by a motor and used to drive the engine, resulting in an increase in the driving force of the saddle-type vehicle.
  • a generator may be provided in the engine, and the electric power charged in the saddle-type vehicle battery pack and the electric power of the generator may be supplied to the motor.
  • a current circuit breaker is an electrical component that can switch between a state in which a current is transmitted and a state in which a current is cut off.
  • a current circuit breaker is, for example, an electric component that switches from a state in which a current is transmitted to a state in which a current is cut off according to a state of the current. Examples of such a current breaker include fuses and breakers.
  • the current circuit breaker is not particularly limited, and may be, for example, an electric component that switches from a state in which a current is transmitted to a state in which a current is cut off according to an operation.
  • Such current breakers include, for example, relays, switches, and service plugs.
  • the terminology used herein is for the purpose of defining only specific embodiments and is not intended to limit the invention.
  • the term “and / or” includes any or all combinations of one or more related listed components.
  • the use of the terms “including, including,””comprising,” or “having,” and variations thereof, is a feature, process, operation, described. It identifies the presence of elements, components and / or their equivalents, but can include one or more of steps, actions, elements, components, and / or groups thereof.
  • the terms “attached”, “combined” and / or their equivalents are widely used and are both direct and indirect attachments and bindings unless otherwise specified. Including.
  • FIG. 1 It is a figure which shows typically the saddle-type vehicle battery pack which concerns on 1st Embodiment, the saddle-type vehicle which mounted the saddle-type vehicle battery pack, and the comparative example. It is a figure which shows the saddle type vehicle battery pack which concerns on 1st Embodiment shown in FIG. 1 in a more enlarged view. It is a figure which shows the saddle-riding type vehicle shown in FIG. 1 in more detail. It is a figure which shows typically the saddle type vehicle battery pack which concerns on 2nd Embodiment. It is a perspective view which shows the bus bar of the saddle type vehicle battery pack which concerns on 3rd Embodiment. It is a figure which shows typically the saddle type vehicle battery pack using the bus bar shown in FIG.
  • FIG. 1 is a diagram schematically showing a saddle-mounted vehicle battery pack, a saddle-mounted vehicle battery pack equipped with a saddle-mounted vehicle battery pack, and a comparative example according to the first embodiment.
  • Part (a-1) of FIG. 1 schematically shows a saddle-type vehicle equipped with a saddle-type vehicle battery pack according to the first embodiment.
  • Part (b-1) of FIG. 1 schematically shows a saddle-type vehicle battery pack according to the first embodiment.
  • Part (a-2) of FIG. 1 schematically shows a saddle-type vehicle equipped with a saddle-type vehicle battery pack of a comparative example.
  • Part (b-2) of FIG. 1 schematically shows a saddle-type vehicle battery pack of a comparative example.
  • FIG. 2 is a magnified view of the saddle-mounted vehicle battery pack according to the first embodiment shown in FIG.
  • the saddle-mounted vehicle battery pack 1 shown in part (b-1) of FIG. 1 is a battery pack used for the saddle-mounted vehicle 100.
  • the saddle-mounted vehicle battery pack 1 is a battery pack that can be charged and discharged.
  • the saddle-type vehicle battery pack 1 receives and outputs electric power that is converted into power to increase the driving force of the saddle-type vehicle 100.
  • the saddle-mounted vehicle battery pack 1 is charged at a voltage equal to or lower than the maximum charging voltage.
  • the maximum charging voltage of the saddle-mounted vehicle battery pack 1 is 12 V or more and 60 V or less.
  • the maximum charging voltage of the saddle-mounted vehicle battery pack 1 is, for example, 48V. However, the maximum charging voltage may be set to, for example, 14V, or may be set to, for example, 36V.
  • the saddle-mounted vehicle battery pack 1 has a charging capacity of 2.5 Ah or more. Therefore, the saddle-mounted vehicle battery pack 1 receives and outputs electric power for increasing the driving force of the saddle-mounted vehicle 100.
  • the saddle-mounted vehicle battery pack 1 includes a lithium-ion battery 11, a case 12, an electrical connector 13, and bus bars 14a to 14f.
  • the saddle-mounted vehicle battery pack 1 includes five lithium-ion batteries 11.
  • the lithium ion batteries 11 are connected in series without being connected in parallel with each other.
  • the number of lithium ion batteries 11 is set so that the maximum voltage across the series is equal to or greater than the maximum voltage of the saddle-mounted vehicle battery pack 1.
  • the lithium ion battery 11 is a battery that can be charged and discharged.
  • the lithium ion battery 11 is a secondary battery that charges and discharges by a chemical reaction of electrodes.
  • the lithium ion battery 11 contains a lithium oxide in the positive electrode 11a.
  • the lithium ion battery 11 is a non-aqueous lithium ion battery that uses a non-aqueous electrolyte.
  • the lithium ion battery 11 contains, for example, at least one selected from the group consisting of spinel-type lithium titanate, niobium titanium-containing composite oxide, and graphite in the negative electrode 11b.
  • the negative electrode 11b of the lithium ion battery 11 is not particularly limited, and a negative electrode containing a substance other than the above can also be adopted.
  • the lithium ion battery 11 has a larger maximum charging current than a battery using another positive electrode material such as a lead battery or a nickel hydrogen battery.
  • the lithium ion battery 11 has a continuous maximum charging rate of 10 C or more.
  • the case 12 houses the lithium-ion battery 11.
  • Case 12 has, for example, a closed structure. More specifically, the case 12 has a structure in which the lithium ion battery 11 cannot be seen from the outside. As a result, the situation in which a foreign substance is inserted from the outside of the saddle-mounted vehicle battery pack 1 and comes into contact with the lithium ion battery 11 is suppressed.
  • the case 12 has, for example, a waterproof structure.
  • the saddle-mounted vehicle battery pack 1 when the saddle-mounted vehicle battery pack 1 is provided in the saddle-mounted vehicle 100, the saddle-mounted vehicle battery pack 1 may be exposed to a liquid such as water or oil.
  • the case 12 suppresses the ingress of liquid. Therefore, the contact between the lithium ion battery 11 and the liquid is suppressed.
  • the electrical connection connector 13 is connected to a mating connector (not shown) provided on the vehicle body 102 (see FIG. 3) of the saddle-mounted vehicle 100, and transmits an input / output current to the vehicle body 102.
  • the electric power stored in the saddle-type vehicle battery pack 1 is supplied to the vehicle body 102 of the saddle-type vehicle 100 through the electric connector 13. Further, at the time of regeneration, the regenerative power is supplied from the vehicle body 102 of the saddle-mounted vehicle 100 to the saddle-mounted vehicle battery pack 1 through the electric connector 13.
  • the electrical connection connector 13 of the present embodiment can also be connected to a charging device provided outside the saddle-type vehicle 100, such as a charging station. While the saddle-mounted vehicle 100 is stopped, a mating connector provided on an external charging device is connected instead of the mating connector provided on the vehicle body 102 (see FIG. 3). As a result, the saddle-mounted vehicle battery pack 1 is charged.
  • the bus bars 14a to 14f are conductors that connect the lithium ion battery 11 and the electrical connector 13.
  • the bass bars 14a to 14f are made of metal.
  • the saddle-mounted vehicle battery pack 1 has a plurality of bus bars 14.
  • the bus bars 14a to 14f have a plate shape having a length L, a width W, and a thickness T. These bus bars 14a to 14f may have the same size and shape as each other, or may have different sizes and shapes.
  • the bus bars 14a to 14e have the same size and shape as each other.
  • the bus bar 14f has a size and shape different from those of 14a to 14e.
  • the length L, the width W, and the thickness T are shown for some of the bus bars 14e and 14f for the sake of easy understanding.
  • the thickness T is smaller than either the length L or the width W. Further, for the bus bar 14f, the thickness T'is smaller than both the length L'and the width W'.
  • the bus bars 14a to 14f (hereinafter, also referred to as bus bars 14) connect the lithium ion battery 11 and the electrical connection connector 13 in series.
  • the bus bar 14 connects the lithium ion batteries 11 in series without parallel.
  • Each of the bus bars 14 electrically connects the positive electrode 11a of one lithium-ion battery 11 and the negative electrode 11b of the lithium-ion battery 11 different from the one lithium-ion battery 11. However, some bus bars 14 electrically connect the electrical connector 13 and the lithium-ion battery 11.
  • the bus bar 14 is connected to the positive electrode 11a and the negative electrode 11b of the lithium ion battery 11 via terminals (not shown). Each of the bus bars 14 does not connect the plurality of positive electrodes 11a provided in the plurality of lithium ion batteries 11. Each of the bus bars 14 does not connect the plurality of negative electrodes 11b provided in the plurality of lithium ion batteries 11. The lithium ion battery 11 is not connected in parallel.
  • the bus bar 14 has no insulating coating. The conductor portion of the bus bar 14 is exposed to the outside. In the bus bar 14, high heat dissipation corresponding to a large current can be obtained.
  • the bus bar 14 is welded, for example, to the lithium ion battery 11 and the electrical connector 13.
  • the bus bars 14a to 14f have a smaller electric resistance than a wire having the same conductor diameter as the thickness T and having the same length L as the bus bars 14a to 14e, for example.
  • the charging current of the lithium ion batteries 11 connected in series flows through the bus bars 14a to 14f, the amount of heat generated from the bus bars 14a to 14f itself is further suppressed.
  • the total resistance which is the total resistance of the bus bars 14a to 11f, is lower than the charging resistance of one lithium ion battery 11.
  • the charging resistance of the lithium ion battery 11 is obtained from the maximum charging current with respect to the maximum charging voltage of the lithium ion battery 11.
  • the total series resistance of only the buses 14a to 11f is lower than the charging resistance of one lithium ion battery 11. As a result, the heat generated from the entire bus bar during charging is less than the heat generated from one lithium ion battery 11.
  • the bus bars 14a to 11f are arranged so as to be dispersed inside the saddle-mounted vehicle battery pack 1. Therefore, the heat generated in the bus bars 14a to 11f due to the current flowing through the bus bars 14a to 11f is dispersed inside the saddle-mounted vehicle battery pack 1. Therefore, the concentration of heat generated in the saddle-mounted vehicle battery pack 1 can be suppressed.
  • the lithium ion batteries 11 included in the saddle-mounted vehicle battery pack 1 of the present embodiment are connected in series without being connected in parallel with each other.
  • Each lithium-ion battery 11 has a variation in internal resistance.
  • the currents flowing through the lithium-ion batteries 11 connected in series are substantially equal regardless of the difference in internal resistance. Therefore, it is easy to maintain the balance of the charge amount in each lithium ion battery 11. For example, when charging is started from a state where the charge amount of each lithium ion battery 11 is 0, the current integrated amount of each lithium ion battery 11 at an arbitrary time is substantially equal. That is, the charge amount of each lithium ion battery 11 is substantially equal. Further, even when each lithium ion battery 11 is discharged, the current flowing through each lithium ion battery 11 is substantially equal.
  • each lithium ion battery 11 at an arbitrary time is substantially equal. Therefore, the timing at which each lithium ion battery 11 is fully charged during charging is substantially the same. Therefore, it is possible to maintain the balance of the charge amount in each lithium ion battery 11 without a control device for monitoring and controlling the state of the lithium ion batteries connected in parallel. Therefore, the saddle-mounted vehicle battery pack 1 can be miniaturized with a simple configuration.
  • the standard working voltage of each lithium ion battery 11 is, for example, 2.3V. However, each lithium ion battery 11 can be charged with a voltage exceeding the standard working voltage. Each lithium ion battery 11 is charged with a voltage of, for example, 3 V or more.
  • the lithium ion battery 11 is configured to be connected in series without being connected in parallel to each other, and the maximum voltage that the saddle-mounted vehicle battery pack 1 can charge is 12 V or more and 60 V or less. In this case, the maximum voltage applied to both ends of the set of lithium ion batteries 11 connected in series is 12 V or more and 60 V or less.
  • the maximum voltage that can be charged by the saddle-type vehicle battery pack 1 is 12 V or more, it is possible to design a direct electrical connection with general electric parts mounted on the saddle-type vehicle 100. Further, since the maximum voltage that can be charged by the saddle-type vehicle battery pack 1 is 12 V or more, a general motor 105 mounted on the saddle-type vehicle 100 is used as the motor 105 that receives the supplied electric power. Design is possible. Further, since the maximum voltage that can be charged by the saddle-type vehicle battery pack 1 is 12 V or more, the motor 105 that receives the supplied electric power tends to increase the driving force of the saddle-type vehicle 100.
  • the saddle-type vehicle battery pack 1 operates in a range belonging to the "extra low voltage” (ELV or safety extra low voltage: SELV) in the standard IEC60950 of the International Electrotechnical Commission (IEC). ..
  • ELV extra low voltage
  • SELV safety extra low voltage
  • a lithium ion battery 11 having a charging capacity of 5 Ah or more and 40 Ah or less can be adopted as the lithium ion battery 11.
  • the maximum charging voltage of such a lithium ion battery 11 is 3V
  • the maximum charging voltage of a saddle-type vehicle battery pack 1 having five lithium ion batteries 11 connected in series is 15V.
  • the continuous maximum charge flow of the lithium ion battery 11 is 50 A.
  • the continuous maximum charge flow of the lithium ion battery 11 is 200 A.
  • the ability to fully charge the battery is difficult to grasp only from the charging current. This is because the ability of a battery to be fully charged depends not only on the charging current but also on the charging capacity. Therefore, in the present specification, as a capacity for the battery to be fully charged, a display based on a charging rate in consideration of a difference in charging capacity is adopted.
  • the voltage applied to both ends of the plurality of lithium ion batteries 11 connected in series is a low voltage belonging to the “extra low voltage”. Therefore, for example, a smaller number of lithium-ion batteries 11 can be connected in series as compared with the case where a voltage higher than the "extra-low voltage” is applied.
  • the saddle-mounted vehicle battery pack 1 of the present embodiment has five lithium-ion batteries 11 connected in series. Therefore, for example, as compared with the case where many ponds are used to cope with a high voltage higher than the “extra low voltage”, the saddle-type vehicle battery pack 1 of the present embodiment charges each lithium ion battery 11. It is possible to reduce variations in capacity characteristics. For this reason, the saddle-mounted vehicle battery pack 1 of the present embodiment can more easily maintain the balance of the charge amount in each lithium ion battery 11 without providing a control device such as a battery management system (BMS).
  • BMS battery management system
  • the lithium ion batteries 11 of the lithium ion batteries 11 included in the saddle-mounted vehicle battery pack 1 of the present embodiment are connected by low resistance bus bars 14a to 14f. Therefore, a large continuous maximum charging rate can be realized as the saddle-type vehicle battery pack 1 without connecting a plurality of lithium-ion batteries 11 in parallel.
  • the saddle-type vehicle battery pack 1 has a continuous maximum charging rate of 10 C or more, it is possible to charge 50% or more of the charge capacity of the saddle-type vehicle battery pack 1 within 3 minutes.
  • the electric vehicle equipped with the saddle-mounted vehicle battery pack 1 of the present embodiment can be charged in a time close to the time required for replenishing the liquid fuel in the conventional or current gas station.
  • the saddle-mounted vehicle battery pack 1 of the embodiment can also adopt a configuration having a continuous maximum charging rate of less than 10C.
  • the amount of electric power to be charged is, for example, 50% of the charging capacity of the saddle-type vehicle battery pack 1
  • the saddle-type vehicle 100 that does not have an auxiliary power source such as an engine generator is usually 0%. This is because it is often charged with a sufficient margin for the amount of charge.
  • the saddle-type vehicle 100 is charged at a high frequency, for example, when the driver is at home, even when the charge amount of the saddle-type vehicle battery pack 1 is more than 50%.
  • the saddle-mounted vehicle battery pack 1 will be charged more frequently.
  • the charging station is equipped with a plurality of charging devices, it is possible to distinguish between a charging device dedicated to a vehicle (first lane) that completes charging within a few minutes and a charging device for a vehicle that does not. .. In this case, a specific vehicle that can be fully charged within a few minutes has a short waiting time and can be charged after a short stay.
  • the saddle-mounted vehicle battery pack 1 of the present embodiment has a lithium ion battery 11 connected in series without being connected in parallel. Therefore, the continuous maximum charging rate and the maximum charging current of the saddle-mounted vehicle battery pack 1 cannot exceed the continuous maximum charging rate and the maximum charging current of the lithium ion battery 11. In other words, the continuous maximum charging rate and the maximum charging current of the saddle-mounted vehicle battery pack 1 are mainly limited by the continuous maximum charging rate and the maximum charging current of the lithium ion battery 11.
  • the lithium ion battery 11 having a continuous maximum charging rate of 10 C or more for example, A lithium-ion battery with a charging capacity of 40 Ah or less and a maximum charging current of 400 A, A lithium-ion battery with a charging capacity of 20 Ah or less and a maximum charging current of 200 A, A lithium-ion battery having a charging capacity of 10 Ah or less and a maximum charging current of 100 A, or Lithium-ion batteries having a charging capacity of 5 Ah or less and a maximum charging current of 50 A can be mentioned.
  • the maximum distance that the saddle-type vehicle 100 (see FIG. 3) can travel with the charged electric power depends on the total charge amount of the saddle-type vehicle battery pack 1.
  • the total charge amount of the saddle-mounted vehicle battery pack 1 is proportional to the number of built-in lithium-ion batteries 11. Since the lithium ion batteries 11 are connected in series without being connected in parallel, the number of lithium ion batteries 11 can be set independently of the maximum charging current and the maximum continuous charging rate.
  • the number of lithium-ion batteries 11 included in the saddle-mounted vehicle battery pack 1 is equal to the number of series-connected lithium-ion batteries 11.
  • the maximum travelable distance of the saddle-type vehicle 100 can be set by the number of lithium-ion batteries 11 included in the saddle-type vehicle battery pack 1.
  • the charging voltage of the saddle-mounted vehicle battery pack 1 is proportional to the number of lithium-ion batteries 11. That is, the product of the charging voltage of one lithium-ion battery 11 and the number of lithium-ion batteries 11 is substantially the charging voltage of the saddle-mounted vehicle battery pack 1.
  • the maximum charging voltage of the saddle-mounted vehicle battery pack 1 is 20 V or more and 60 V or less. Therefore, the number of lithium ion batteries 11 is set so that the above product is 60 V or less.
  • Each lithium-ion battery 11 has a voltage obtained by dividing the voltage applied to the saddle-type vehicle battery pack 1 in order to allow the above maximum charging current to flow through the saddle-type vehicle battery pack 1 by the number of lithium-ion batteries 11 connected in series. A substantially applied voltage can be obtained. By dividing the obtained voltage by the maximum charging current, the internal resistance of each lithium ion battery 11 can be obtained.
  • the bus bars 14a to 14f are plate-shaped. The total resistance of the buses 14a to 14f is set to be smaller than the internal resistance of each of the lithium ion batteries 11. For example, the total resistance can be reduced by increasing the width W or the thickness T of the bus bars 14a to 14f.
  • the resistance of the bus bar 14 to the voltage, current, and continuous maximum charge rate of the saddle-type vehicle battery pack 1 is increased. The effect is suppressed.
  • each of the lithium ion batteries 11 is connected to each other by bus bars 14b to 14e, and the lithium ion battery 11 and the electrical connection connector 13 are also connected to each other by bus bars 14a. , 14f are connected.
  • bus bars 14b to 14e bus bars
  • 14f bus bars
  • the insulating structure can be simplified. Therefore, a small saddle-mounted vehicle battery pack 1 can be realized with a simple configuration. Then, the saddle-mounted vehicle battery pack 1 can be charged in a short time without connecting a plurality of lithium ion batteries 11 in parallel.
  • a saddle-mounted vehicle battery pack 91 can be considered.
  • the saddle-mounted vehicle battery pack 91 of the comparative example includes a combination of parallel connection and series connection.
  • the current flowing through the buses 914b to 914e that connect the lithium ion batteries 911 to each other is small.
  • the shapes and arrangements of the bus bars 914b to 914e of the saddle-type vehicle battery pack 91 of the comparative example are more complicated than those of the saddle-type vehicle battery pack 1 of the present embodiment shown in the part (1-b) of FIG. ..
  • the saddle-mounted vehicle battery pack 91 of the comparative example is large. Therefore, the saddle-mounted vehicle 910 equipped with the saddle-mounted vehicle battery pack 91 is also likely to be enlarged.
  • FIG. 3 is a diagram showing the outline of the saddle-mounted vehicle shown in FIG. 1 in more detail.
  • the saddle-mounted vehicle 100 shown in FIG. 3 has a saddle-mounted vehicle battery pack 1.
  • the saddle-mounted vehicle 100 includes a vehicle body 102 and wheels 103a and 103b.
  • the vehicle body 102 is provided with a motor control device 104 and a motor 105.
  • the vehicle body 102 includes a saddle 107 and a bar handle 108 for steering.
  • the saddle 107 is configured so that the driver sits across it.
  • the steering bar handle 108 is provided so as to extend in the left-right direction of the saddle-mounted vehicle 100.
  • the saddle-mounted vehicle 100 is configured to turn as a lean vehicle by shifting the weight so as to lean inward of the curve by a driver who holds the bar handle 108 at the time of turning.
  • the saddle-mounted vehicle 100 does not have an engine as an internal combustion engine.
  • the saddle-mounted vehicle 100 is not provided with a control device.
  • the control device referred to here acquires at least one parameter of the current, voltage, or temperature detected from each of the plurality of lithium ion batteries 11 in the saddle-mounted vehicle battery pack 1, and at least one of the acquired parameters. It is configured to change the voltage and / or current of at least one lithium ion battery 11 among the plurality of lithium ion batteries 11 based on one parameter.
  • Such a control device is not provided in the saddle-mounted vehicle battery pack 1.
  • the rear wheel 103b is a driving wheel.
  • the motor 105 drives the wheels 103b by the electric power supplied from the saddle-mounted vehicle battery pack 1.
  • the saddle-mounted vehicle 100 travels by driving the wheels 103b.
  • the electric power of the saddle-mounted vehicle battery pack 1 is supplied to the motor 105 via the motor control device 104.
  • the saddle-mounted vehicle battery pack 1 is connected to the motor control device 104 via the electrical connector 13.
  • the motor control device 104 controls the power supply from the saddle-mounted vehicle battery pack 1 to the motor 105 via the mating connector and the power supply from the motor 105 to the saddle-mounted vehicle battery pack 1 via the mating connector. .. That is, the saddle-type vehicle battery pack 1 is connected to the vehicle body 102 of the saddle-type vehicle 100 via the electric connection connector 13.
  • the current is transmitted from the saddle-mounted vehicle battery pack 1 to the motor control device 104 via the electrical connector 13.
  • the motor control device 104 For example, when the saddle-type vehicle 100 is braked by the regenerative braking of the motor 105, the electric power generated by the motor 105 is supplied to the saddle-type vehicle battery pack 1 via the motor control device 104. At this time, the saddle-mounted vehicle battery pack 1 is charged.
  • the saddle-mounted vehicle 100 shown in FIG. 3 has a function of being charged by electric power supplied from the outside of the saddle-mounted vehicle 100. More specifically, the saddle-mounted vehicle battery pack 1 has a function of being charged by electric power supplied from the outside of the saddle-mounted vehicle 100.
  • the mating connector provided in the motor control device 104 is removed from the electric connection connector 13, and the connector of the charging device provided outside the saddle-mounted vehicle 100 is connected to the electric connection connector 13.
  • the connector of the charging device provided externally is, for example, a connector provided in the charging device of the charging station.
  • As the connector of the charging device for example, a connector of a charging device provided in a general household and using a commercial power source can also be adopted.
  • each of the plurality of lithium-ion batteries 11 is connected by a bus bar 14, and the electrical connection connector 13 is also a bus bar. Since it is connected by 14, it can be charged with a large current without connecting a plurality of lithium ion batteries 11 in parallel.
  • the saddle-mounted vehicle battery pack 1 has a continuous maximum charging rate of 10 C or more.
  • the saddle-mounted vehicle battery pack 1 can have a continuous maximum charging rate of, for example, 20 C or more or 40 C or more, depending on the specifications of the lithium ion battery 11 and the bus bar 14 corresponding to the specifications.
  • the saddle-type vehicle battery pack 1 Since the saddle-type vehicle battery pack 1 has a continuous maximum charging rate of 10 C or more, for example, 50% or more of the charge capacity of the saddle-type vehicle battery pack 1 can be charged within 3 minutes. Therefore, the saddle-mounted vehicle 100 does not need to occupy the charging station for a long time for charging.
  • the maximum charging voltage may exceed the range of 12 V or more and 60 V or less. Also, increasing the number of lithium-ion batteries connected in series to increase energy is accompanied by an increase in the output voltage of the saddle-type vehicle battery pack. It is required to increase the maximum voltage of the motor control device and the motor. In addition, as the number of lithium-ion batteries increases, the saddle-type vehicle battery pack becomes larger. As a result, the saddle-mounted vehicle 910 on which the saddle-mounted vehicle battery pack 91 is mounted is also increased in size.
  • the lithium-ion batteries 911 shown in part (b-2) of FIG. 1 are connected in parallel and in series.
  • the configuration is 2 parallel and 5 series.
  • a continuous maximum charging rate equivalent to that of the embodiment shown in the part (b-1) of FIG. 1 is realized.
  • the bus bars 914a to 914f to which the lithium ion battery 911 is connected have a complicated shape because parallel connection and series connection are mixed.
  • the thickness of the bus bars 914b to 914 connecting the lithium ion batteries 911 can be made smaller than that of the present embodiment shown in the part (b-1) of FIG.
  • control circuits 916 and 917 are provided in order to suppress variations in the charge amount of each lithium ion battery 911 connected in parallel.
  • the control circuits 916 and 917 include an individual control unit 917 and a central control unit 916.
  • the individual control unit 917 has a circuit that detects the current of each lithium ion battery 911 and limits the current.
  • the individual control unit 917 supplies the detection result as current data to the control device.
  • the central control unit 916 calculates the charge amount of each lithium ion battery 911 from the current data of each lithium ion battery 911.
  • the central control unit 916 causes the individual control unit 917 to limit the current of the lithium ion battery 911 according to the calculation result.
  • the central control unit 916 controls a part of the plurality of lithium ion batteries 911 so as not to be overcharged.
  • the saddle-type vehicle battery pack 91 shown in the part (b-2) of FIG. 1 is larger than, for example, the saddle-type vehicle battery pack 1 of the embodiment shown in the part (b-1) of FIG. Therefore, the saddle-type vehicle 910 of the part (a-2) of FIG. 1 on which the saddle-type vehicle battery pack 91 is mounted is the saddle-type vehicle 100 of the embodiment shown in the part (a-1) of FIG. Greater than.
  • the saddle-mounted vehicle battery pack 1 of the present embodiment shown in the part (b-1) of FIG. 1 is, for example, the saddle-mounted vehicle battery pack 1 of the comparative example shown in the part (b-2) of FIG. Smaller than Therefore, the saddle-type vehicle 100 of the part (a-1) of FIG. 1 on which the saddle-type vehicle battery pack 1 of the present embodiment is mounted is the saddle of the comparative example shown in the part (a-2) of FIG. It is smaller than the riding vehicle 910.
  • FIG. 4 is a diagram schematically showing a saddle-mounted vehicle battery pack according to the second embodiment.
  • the saddle-mounted vehicle battery pack 21 according to the present embodiment is different from the saddle-mounted vehicle battery pack 1 according to the first embodiment in that it further includes a charging-dedicated connector 15 and a current circuit breaker 18. Further, the electrical connection connector 13 includes a data communication terminal 13a. The charging-only connector 15 also includes a data communication terminal 19b. Other configurations are designated by the same reference numerals as those of the saddle-mounted vehicle battery pack 1 shown in the part (1-a) of FIG. 1, and a part of the description thereof will be omitted.
  • the charging connector 15 of the saddle-mounted vehicle battery pack 21 shown in FIG. 4 is connected to the connector of the charging device provided outside the saddle-mounted vehicle 100.
  • the charging-dedicated connector 15 is connected to the set of lithium-ion batteries 11 in parallel with the electrical connection connector 13.
  • the charging-only connector 15 is used only when the saddle-mounted vehicle battery pack 21 is charged by the electric power supplied from the outside of the saddle-mounted vehicle 100.
  • the data communication terminal 13a outputs data for specifying the specifications of the saddle-mounted vehicle battery pack 1 to the outside of the saddle-mounted vehicle battery pack 1.
  • the data communication terminal 13a is integrated with the electrical connector 13.
  • the data communication terminal 13a is electrically connected to the data output unit 17.
  • the data output unit 17 stores data for specifying the electrical specifications of the saddle-mounted vehicle battery pack 1.
  • the data output unit 17 is built in the saddle-mounted vehicle battery pack 1.
  • the data output unit 17 outputs the specification data stored in a state where the data communication terminal 13a is electrically connected to the outside of the saddle-type vehicle battery pack 1 via the data communication terminal 13a.
  • the data communication terminal 13a outputs data for identifying the saddle-mounted vehicle battery pack 1 as specification data for specifying the above specifications.
  • the external device of the saddle-type vehicle battery pack 1 can obtain information on the maximum charging current of the saddle-type vehicle battery pack 1 based on the specification data output via the data communication terminal 13a.
  • the motor control device 104 provided on the vehicle body 102 (see FIG. 3) performs regenerative braking of the saddle-type vehicle 100 based on the specification data output via the data communication terminal 13a, and the saddle-type vehicle battery pack. Obtain information on the maximum charging current that can be supplied to 1.
  • the data communication terminal 19b outputs the specification data for specifying the specifications of the saddle-type vehicle battery pack 1 to the outside of the saddle-type vehicle battery pack 1.
  • the data communication terminal 19b is integrated with the charging connector 15.
  • the data communication terminal 19b is electrically connected to the data output unit 17.
  • the charging device provided outside the saddle-type vehicle 100 is based on the specification data output via the data communication terminal 19b, and refers to, for example, a database to provide information on the maximum charging current of the saddle-type vehicle battery pack 1. Can be obtained.
  • a charging device of a charging station (not shown) obtains information on the maximum charging current that can be supplied to the saddle-mounted vehicle battery pack 1 based on the specification data output via the data communication terminal 19b.
  • the saddle-mounted vehicle battery pack 21 has an electrical connection connector 13 and a charging-only connector 15. Therefore, the saddle-type vehicle battery pack 21 can be charged while maintaining the connection state of the vehicle body 102 of the saddle-type vehicle 100 with respect to the electric connection connector 13. Therefore, the charging operation can be facilitated, and the degree of freedom in the installation position of the saddle-mounted vehicle battery pack 21 can be increased.
  • Each lithium ion battery 11 has a negative electrode 11b containing at least one selected from the group consisting of spinel-type lithium titanate, niobium titanium-containing composite oxide, and graphite. Therefore, each lithium ion battery 11 has a wide allowable range of charge voltage and discharge voltage. Therefore, it is easy to keep the balance of the charge amount in each lithium ion battery without providing a control device such as a battery management system (BMS).
  • BMS battery management system
  • the current circuit breaker 18 of the saddle-type vehicle battery pack 21 conducts or cuts off the current flowing through the lithium ion battery 11.
  • the current circuit breaker 18 of the saddle-mounted vehicle battery pack 21 is configured to be turned on when, for example, the mating connector is connected to the electrical connection connector 13 or the charging-only connector 15.
  • the current circuit breaker 18 is configured to be turned on by, for example, a current energizing the mating connector.
  • a device for detecting a physical connection or a signal received from the other party at the time of connection may be provided.
  • the configuration of the present embodiment it is possible to suppress a situation in which the current of the lithium ion battery 11 carelessly flows to the outside from the electric connection connector 13 or the charging dedicated connector 15. Therefore, for example, when the saddle-mounted vehicle battery pack 1 is removed from the vehicle body 102 (see FIG. 3) or during the work of attaching the saddle-mounted vehicle battery pack 1 to the vehicle body 102, the electrical connection connector 13 or the charging-dedicated connector 15 is saddle-mounted. It is possible to prevent a situation in which some conductor is inadvertently contacted outside the vehicle battery pack 1 and the conductor is welded to the electrical connection connector 13 or the charging-only connector 15 due to a large current due to a short circuit. Without providing a control device such as a battery management system (BMS), it is possible to suppress a situation in which, for example, an external conductor is welded to the electrical connection connector 13 or the charging-only connector 15 with a simple configuration.
  • BMS battery management system
  • FIG. 5 is a perspective view showing a bus bar of the saddle-mounted vehicle battery pack according to the third embodiment.
  • the bus bar 314b shown in FIG. 5 has a plate shape. However, the bus bar 314b is not flat.
  • the bus bar 314b has a bent portion.
  • the bus bar 314b is formed by bending a flat plate.
  • the bus bar 314b has a length L, a width W, and a thickness T. The thickness T is smaller than either the length L or the width W.
  • FIG. 6 is a diagram schematically showing a saddle-mounted vehicle battery pack using the bus bar shown in FIG.
  • the saddle-mounted vehicle battery pack 31 shown in FIG. 6 includes bus bars 314a to 314f.
  • the bus bars 314b to 314e have the shape shown in FIG.
  • the lithium ion battery 11 of the saddle-mounted vehicle battery pack 31 is the same battery as the part (1-b) of FIG.
  • the lithium ion battery 11 of the saddle-mounted vehicle battery pack 31 is arranged in a direction different from the arrangement of the part (1-b) of FIG.
  • all the lithium ion batteries 11 are arranged with the positive electrodes 11a facing in the same direction.
  • Other points are the same as those of the first embodiment shown in the part (1-b) of FIG.
  • the present invention is not limited to the above-mentioned example, and for example, the following configurations (8) to (13) can be adopted.
  • Examples of the following embodiments (8) to (13) include the above-described embodiments.
  • the bus bar has a structure in which the conductor metal is exposed without having an insulating coating.
  • this provides high heat dissipation corresponding to a large current.
  • a saddle-mounted vehicle battery pack of any one of (1) to (5) has a liquidtight structure.
  • the saddle-mounted vehicle battery pack 1 may be exposed to a liquid such as water or oil, the ingress of the liquid is suppressed depending on the case. Therefore, the contact between the lithium ion battery and the liquid is suppressed.
  • a saddle-mounted vehicle battery pack according to any one of (1) to (5).
  • the bus bar has a total resistance lower than the charging resistance of one lithium-ion battery.
  • a saddle-mounted vehicle battery pack according to any one of (1) to (5).
  • the data communication terminal is integrated with the electrical connector.
  • a saddle-mounted vehicle battery pack according to any one of (1) to (5).
  • the data communication terminal is integrated with the charging-dedicated connector.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention a pour objet de fournir un bloc-batterie de véhicule à selle (1) pouvant être chargé en peu de temps avec une configuration simple et compacte. L'invention concerne une pluralité de batteries lithium-ion (11), un boîtier (12), et un connecteur électrique (13) qui est relié à un connecteur apparié et qui est fixé au boîtier qui transmet un courant entré et sorti par rapport à un corps de véhicule (102). Le bloc-batterie de véhicule à selle a une capacité de charge de 2,5 Ah ou plus, une tension de charge maximale de 12 V à 60 V inclus, et comprend une barre omnibus de type plaque (14) par laquelle le connecteur électrique et la pluralité de batteries lithium-ion sont connectés en série plutôt qu'en parallèle, de telle sorte que l'énergie électrique convertie en puissance motrice pour augmenter la force d'entraînement d'un véhicule à selle (100) est reçue et délivrée en sortie. La barre omnibus en forme de plaque a une largeur (W) et une épaisseur (T) de telle sorte que la puissance électrique pour augmenter la force d'entraînement du véhicule à selle est chargée par un courant circulant à travers un trajet formé par la connexion en série sous la tension de charge maximale de 12 V à 60 V inclus.
PCT/JP2021/015985 2020-04-22 2021-04-20 Bloc-batterie de véhicule à selle et véhicule à selle WO2021215426A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2215467.8A GB2608955A (en) 2020-04-22 2021-04-20 Straddled vehicle battery pack and straddled vehicle
DE112021002462.0T DE112021002462T5 (de) 2020-04-22 2021-04-20 Spreizsitzfahrzeug-Batteriesatz und Spreizsitzfahrzeug
FR2104218A FR3109674A1 (fr) 2020-04-22 2021-04-22 Bloc-batterie de véhicule à selle et véhicule à selle
TW110114505A TWI832046B (zh) 2020-04-22 2021-04-22 跨坐型車輛電池組及跨坐型車輛

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP2020/017299 WO2021214904A1 (fr) 2020-04-22 2020-04-22 Bloc-batterie de véhicule électrique et véhicule électrique pur
JPPCT/JP2020/017299 2020-04-22

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WO2021215426A1 true WO2021215426A1 (fr) 2021-10-28

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PCT/JP2021/015985 WO2021215426A1 (fr) 2020-04-22 2021-04-20 Bloc-batterie de véhicule à selle et véhicule à selle

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JP2013112303A (ja) * 2011-11-30 2013-06-10 Daihatsu Motor Co Ltd ハイブリッドカーの電源装置
JP2014027857A (ja) * 2012-07-30 2014-02-06 Mitsubishi Electric Corp 充放電装置
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JP2008041402A (ja) * 2006-08-04 2008-02-21 Toshiba Corp 非水電解質電池、電池パック及び自動車
WO2012133654A1 (fr) * 2011-03-30 2012-10-04 株式会社Ｎｅｏｍａｘマテリアル Borne d'électrode négative et organe de capot pour batteries à lithium-ion et batterie à lithium-ion
JP2013051857A (ja) * 2011-08-31 2013-03-14 Sony Corp 蓄電装置、電子機器、電動車両および電力システム
JP2013112303A (ja) * 2011-11-30 2013-06-10 Daihatsu Motor Co Ltd ハイブリッドカーの電源装置
JP2014027857A (ja) * 2012-07-30 2014-02-06 Mitsubishi Electric Corp 充放電装置
JP2015146257A (ja) * 2014-02-03 2015-08-13 株式会社豊田自動織機 電池ユニット
JP2019160446A (ja) * 2018-03-08 2019-09-19 ヤマハ発動機株式会社 リーン車両用バッテリ及びリーン車両

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