WO2024048547A1 - Temperature control system, work machine, and temperature control method - Google Patents

Temperature control system, work machine, and temperature control method Download PDF

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Publication number
WO2024048547A1
WO2024048547A1 PCT/JP2023/031096 JP2023031096W WO2024048547A1 WO 2024048547 A1 WO2024048547 A1 WO 2024048547A1 JP 2023031096 W JP2023031096 W JP 2023031096W WO 2024048547 A1 WO2024048547 A1 WO 2024048547A1
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WO
WIPO (PCT)
Prior art keywords
storage battery
temperature
temperature control
remaining capacity
charging
Prior art date
Application number
PCT/JP2023/031096
Other languages
French (fr)
Japanese (ja)
Inventor
篤志 市丸
佑人 渡邉
有 伊藤
隻人 長倉
匡史 山本
Original Assignee
株式会社小松製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Publication of WO2024048547A1 publication Critical patent/WO2024048547A1/en

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Classifications

    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • 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

Definitions

  • the present disclosure relates to a temperature control system, a work machine, and a temperature control method.
  • Patent Document 1 discloses a battery warming device for keeping a rechargeable battery mounted on a battery forklift or the like at a predetermined temperature.
  • a storage battery When a storage battery is used as a power source for a temperature control device, if the temperature control device continues to operate even though the remaining capacity of the storage battery is low, the capacity of the storage battery necessary for operating the working machine will decrease. On the other hand, if the operation of the temperature control device is stopped, it may become difficult to maintain the storage battery within the recommended temperature range.
  • the present disclosure aims to suppress the influence of temperature adjustment of a storage battery on the operation of a work machine.
  • a remaining capacity acquisition unit that acquires the remaining capacity of a storage battery installed in a working machine
  • a temperature acquisition unit that acquires the temperature of the storage battery
  • a remaining capacity and temperature acquisition unit that are acquired by the remaining capacity acquisition unit.
  • a temperature control system including a temperature control unit that controls a temperature control device that adjusts the temperature of the storage battery based on the temperature acquired by the temperature control unit.
  • temperature adjustment of the storage battery is suppressed from affecting the operation of the work machine.
  • FIG. 1 is a perspective view showing a working machine according to an embodiment.
  • FIG. 2 is a diagram showing a connection part of the working machine according to the embodiment.
  • FIG. 3 is a block diagram showing a temperature control system according to an embodiment.
  • FIG. 4 is a functional block diagram showing the management controller according to the embodiment.
  • FIG. 5 is a flowchart showing the temperature control method according to the embodiment.
  • FIG. 6 is a block diagram showing a computer system according to an embodiment.
  • FIG. 1 is a perspective view showing a working machine 1 according to an embodiment.
  • the working machine 1 is a battery forklift truck that uses a storage battery as a power source.
  • the working machine 1 includes a vehicle body 2, a traveling device 3, a working machine 4, a battery pack 5, and a connecting section 10.
  • the vehicle body 2 includes a frame 2A, a housing member 2B, and a counterweight 2C.
  • the housing member 2B is supported by the frame 2A.
  • the housing member 2B is arranged at the rear of the vehicle body 2.
  • the housing member 2B has a battery chamber in which the battery pack 5 is placed.
  • the counterweight 2C is arranged below the housing member 2B.
  • the traveling device 3 supports the vehicle body 2.
  • the traveling device 3 has a front wheel 3F and a rear wheel 3R.
  • the work machine 4 is supported by the vehicle body 2.
  • the work machine 4 includes a mast 4A supported by the vehicle body 2 and a fork 4B supported by the mast 4A.
  • the work machine 4 is driven by a work machine cylinder 7.
  • the work machine cylinder 7 includes a tilt cylinder 7A that tilts the mast 4A in the front-back direction, and a lift cylinder 7B that moves the fork 4B in the vertical direction.
  • the mast 4A is tilted in the front-rear direction by driving the tilt cylinder 7A
  • the fork 4B is tilted in the front-rear direction while being supported by the mast 4A.
  • the fork 4B moves in the vertical direction while being supported by the mast 4A by driving the lift cylinder 7B.
  • the battery pack 5 includes a storage battery 50.
  • the battery pack 5 is housed in the housing member 2B.
  • the storage battery 50 is a power source for the working machine 1.
  • the storage battery 50 can be repeatedly charged and discharged.
  • As the storage battery 50 a lithium ion battery is exemplified.
  • a plurality of battery packs 5 are mounted on the work machine 1.
  • two battery packs 5 are provided.
  • Battery pack 5 includes a first battery pack 5A and a second battery pack 5B.
  • the work machine 1 is operated by an operator seated on a driving seat 8.
  • the driver seat 8 is supported by the frame 2A.
  • the work machine 1 has a plurality of operating members operated by an operator.
  • a steering wheel 9 is exemplified as the operating member.
  • the operator operates the steering wheel 9 by hand to steer the traveling device 3.
  • examples of the operating members include an accelerator pedal, a brake pedal, a work implement lever, and a forward/reverse lever.
  • the operator drives the traveling device 3 by operating the accelerator pedal with his or her foot.
  • the operator brakes the traveling device 3 by operating the brake pedal with his or her foot.
  • the operator operates the work implement 4 by manually operating the work implement lever.
  • the operator manually operates the forward/reverse lever to switch the traveling direction of the traveling device 3 between forward and reverse.
  • connection unit 10 is connected to the charging device 20.
  • the connecting portion 10 is arranged at the rear of the housing member 2B.
  • a plurality of connection parts 10 are provided in the work machine 1.
  • two connection parts 10 are provided.
  • the connecting portion 10 includes a first connecting portion 10A and a second connecting portion 10B.
  • the charging device 20 charges the storage battery 50.
  • Charging device 20 is placed outside work machine 1 .
  • Charging device 20 charges storage battery 50 from outside of working machine 1 .
  • the storage battery 50 can be charged simultaneously by a plurality of charging devices 20.
  • the storage battery 50 can be charged simultaneously by two charging devices 20.
  • Each of the plurality of charging devices 20 is connected to each of the plurality of connection parts 10.
  • the charging device 20 includes a first charging device 20A connected to the first connecting portion 10A, and a second charging device 20B connected to the second connecting portion 10B.
  • the charging device 20 is connected to the connection unit 10 via a cable 21 and a plug 22.
  • the connecting portion 10 includes an insertion port into which a plug 22 is inserted.
  • the charging device 20 has an interface device 23.
  • the interface device 23 includes an operating device 23A operated by an operator and a display device 23B that displays display data.
  • the operating device 23A includes a charging start operating section 231, a charging stop operating section 232, and an emergency stop operating section 233.
  • Examples of the charging start operating section 231 and the charging stop operating section 232 include a toggle switch, a rocker switch, and a push button switch.
  • a push button switch is exemplified as the emergency stop operation section 233.
  • As the display device 23B a flat panel display such as a liquid crystal display or an organic EL display is exemplified.
  • FIG. 2 is a diagram showing the connection section 10 of the working machine 1 according to the embodiment.
  • the working machine 1 has a cover 2D that covers the connection part 10.
  • the first connecting portion 10A and the second connecting portion 10B are arranged with an interval in the vehicle width direction of the working machine 1.
  • a power switch 51 and an operating lamp 52 are arranged at the rear of the vehicle body 2.
  • the power switch 51 and the operation lamp 52 are arranged between the first connection part 10A and the second connection part 10B.
  • As the power switch 51 a momentary switch is exemplified.
  • the operating lamp 52 operates based on the operating state of the storage battery 50.
  • the operating state of the storage battery 50 includes a charging state and a discharging state. As an example, when the storage battery 50 is in a charging state, the operating lamp 52 blinks, and when the storage battery 50 is in a discharging state, the operating lamp 52 lights up.
  • FIG. 3 is a block diagram showing the temperature control system 100 according to the embodiment.
  • the temperature control system 100 includes a battery pack 5 , a charging device 20 , a connection section 10 , a management controller 11 , a control circuit 30 , a power supply controller 12 , and a master controller 13 .
  • the battery pack 5 is mounted on the working machine 1.
  • the battery pack 5 includes a storage battery 50, a voltage sensor 53 that detects the voltage of the storage battery 50, a temperature sensor 54 that detects the temperature of the storage battery 50, a heater 55 that heats the storage battery 50, and a battery controller 56.
  • the charging device 20 is placed outside the work machine 1.
  • the charging device 20 includes an operating device 23A, a display device 23B, an AC/DC conversion module 24 connected to a commercial power source 27, and a contactor 25 disposed between the commercial power source 27 and the AC/DC conversion module 24. , and a charging controller 26.
  • the operating device 23A includes a charging start operating section 231 that causes the charging device 20 to perform a charging operation, a charging stop operating section 232 that causes the charging device 20 to perform a charging stop operation, and an emergency stop operating section 233 that causes the charging device 20 to perform an emergency stop operation. .
  • the connection unit 10 is connected to the charging device 20.
  • the connecting portion 10 has a locking mechanism that locks the plug 22.
  • the connection section 10 includes a lock sensor 14 that detects that the plug 22 of the charging device 20 and the connection section 10 are locked.
  • the connecting portion 10 is provided with an energizing line 15 that is energized when the plug 22 of the charging device 20 and the connecting portion 10 are connected.
  • the energizing line 15 is connected to the power controller 12 via the detection line 16 .
  • the power supply controller 12 determines whether or not the plug 22 of the charging device 20 and the connecting portion 10 are connected based on the detection signal of the lock sensor 14 or the energization state of the energization line 15 acquired via the detection line 16. can do.
  • the control circuit 30 includes a positive electrode line 31 connected to the positive electrode of the charging device 20 via the connecting portion 10 , a negative electrode line 32 connected to the negative electrode of the charging device 20 via the connecting portion 10 , and a negative electrode line 32 connected to the negative electrode of the charging device 20 via the connecting portion 10 .
  • a signal line 33 connects the management controller 11 and the charging controller 26, and a signal line 34 connects the management controller 11 and the battery controller 56.
  • the signal line 33 includes a signal line 33A that connects the management controller 11 and the charging controller 26 of the first charging device 20A, and a signal line 33B that connects the management controller 11 and the charging controller 26 of the second charging device 20B. .
  • the signal line 34 includes a signal line 34A that connects the management controller 11 and the battery controller 56 of the first battery pack 5A, and a signal line 34B that connects the management controller 11 and the battery controller 56 of the second battery pack 5B. .
  • the first charging device 20A and the second charging device 20B are connected in parallel to the positive electrode line 31.
  • the first charging device 20A and the second charging device 20B are connected in parallel to the negative electrode line 32.
  • the first charging device 20A and the positive electrode line 31 are connected via the positive electrode line 31A.
  • the second charging device 20B and the positive electrode line 31 are connected via the positive electrode line 31B.
  • the first charging device 20A and the negative electrode line 32 are connected via the negative electrode line 32A.
  • the second charging device 20B and the negative electrode line 32 are connected via the negative electrode line 32B.
  • the storage battery 50 of the first battery pack 5A and the storage battery 50 of the second battery pack 5B are connected in series.
  • the positive electrode line 31 is connected to the positive electrode of the storage battery 50 of the first battery pack 5A via the positive electrode line 35.
  • the negative electrode line 32 is connected to the negative electrode of the storage battery 50 of the second battery pack 5B via the negative electrode line 36.
  • a fuse 35A is arranged on the positive electrode line 35.
  • the heater 55 of the first battery pack 5A and the heater 55 of the second battery pack 5B are connected in series.
  • the positive electrode line 31 is connected to the positive electrode of the heater 55 of the first battery pack 5A via the positive electrode line 57.
  • the negative electrode line 32 is connected to the negative electrode of the heater 55 of the second battery pack 5B via the negative electrode line 58.
  • the positive electrode line 35 is connected to the traveling inverter 61 and the working machine inverter 62 via the positive electrode line 37 and the positive electrode line 39, respectively.
  • the negative electrode line 36 is connected to the traveling inverter 61 and the working machine inverter 62 via the negative electrode line 38 and the negative electrode line 40, respectively.
  • the travel inverter 61 and the work equipment inverter 62 are connected in parallel to the positive electrode line 39. Traveling inverter 61 and working machine inverter 62 are connected in parallel to negative electrode line 40 .
  • control circuit 30 includes a charging contactor 41 arranged on the positive electrode line 31.
  • the charging contactor 41 When the charging contactor 41 is turned on, the charging device 20 and the storage battery 50 are connected via the positive electrode line 31 and the positive electrode line 35, and the storage battery 50 is charged by the charging device 20. By turning off the charging contactor 41, the charging device 20 and the storage battery 50 are separated, and the storage battery 50 is not charged.
  • the charging contactor 41 includes a charging contactor 41A that switches between connecting and disconnecting the first charging device 20A and the storage battery 50, and a charging contactor 41B that switches between connecting and disconnecting the second charging device 20B and the storage battery 50.
  • Charging contactor 41A is arranged on positive electrode line 31A.
  • Charging contactor 41B is arranged on positive electrode line 31B.
  • the second charging device 20B and the storage battery 50 are connected, and the storage battery 50 is charged by the second charging device 20B.
  • the second charging device 20B and the storage battery 50 are separated, and the storage battery 50 is not charged by the second charging device 20B.
  • the management controller 11 is connected to the charging contactor 41 via a control line 71.
  • the control line 71 includes a control line 71A that connects the management controller 11 and the charging contactor 41A, and a control line 71B that connects the management controller 11 and the charging contactor 41B.
  • Management controller 11 controls charging contactor 41 via control line 71 .
  • control circuit 30 includes a discharge contactor 42 arranged on the positive electrode line 37.
  • the storage battery 50 is connected to the traveling inverter 61 and the working machine inverter 62 via the positive electrode line 37 and the positive electrode line 39, and the traveling inverter 61 and the working machine are connected by discharging from the storage battery 50. Power is supplied to each of the inverters 62.
  • the discharge contactor 42 By turning off the discharge contactor 42, the storage battery 50 is separated from each of the travel inverter 61 and the work equipment inverter 62, and power is not supplied from the storage battery 50 to each of the travel inverter 61 and the work equipment inverter 62.
  • the management controller 11 is connected to the discharge contactor 42 via a control line 72.
  • the management controller 11 controls the discharge contactor 42 via a control line 72.
  • the control circuit 30 also includes a heater contactor 43 arranged on the positive electrode line 57.
  • a heater contactor 43 When the heater contactor 43 is turned on, at least one of the charging device 20 and the storage battery 50 is connected to the heater 55 via the positive electrode line 57, and power is supplied to the heater 55. By turning off heater contactor 43, charging device 20, storage battery 50, and heater 55 are separated, and power is not supplied to heater 55.
  • the management controller 11 is connected to the heater contactor 43 via a control line 73.
  • the management controller 11 controls the heater contactor 43 via a control line 73.
  • the detection signal of the voltage sensor 53 is transmitted from the battery controller 56 to the management controller 11 via the signal line 34.
  • a detection signal from the temperature sensor 54 is transmitted from the battery controller 56 to the management controller 11 via the signal line 34.
  • the recommended voltage range and recommended temperature range of the storage battery 50 when the storage battery 50 is discharged are determined.
  • the management controller 11 controls the discharge contactor 42 so that the storage battery 50 does not discharge when the voltage of the storage battery 50 is not within the recommended voltage range or when the temperature of the storage battery 50 is not within the recommended temperature range. That is, when the management controller 11 determines that the voltage of the storage battery 50 is not within the recommended voltage range based on the detection signal of the voltage sensor 53, or based on the detection signal of the temperature sensor 54, the management controller 11 determines that the temperature of the storage battery 50 is within the recommended voltage range. If it is determined that it is not within the range, the discharge contactor 42 is turned off. When the management controller 11 determines that the voltage of the storage battery 50 is within the recommended voltage range and the temperature of the storage battery 50 is within the recommended temperature range, the management controller 11 turns on the discharge contactor 42.
  • a recommended temperature range for the storage battery 50 when charging the storage battery 50 is determined.
  • the management controller 11 determines that the temperature of the storage battery 50 is below a predetermined value indicating the lower limit of the recommended temperature range based on the detection signal of the temperature sensor 54, the management controller 11 controls the heater 55 so that power is supplied to the heater 55. Controls the contactor 43.
  • the predetermined value is a predetermined value.
  • control circuit 30 includes a power supply circuit 17 for the management controller 11 and a self-holding relay 44 for the management controller 11.
  • the positive line 31 is connected to the power supply circuit 17 via the power switch 51 and the positive line 45 . Further, the positive line 31 is connected to the power supply circuit 17 via a self-holding relay 44 .
  • Negative line 32 is connected to power supply circuit 17 via negative line 46 .
  • the power switch 51 is arranged at the rear of the vehicle body 2. The operator can operate the power switch 51. When the power switch 51 is turned on, power is supplied to the power supply circuit 17 and the management controller 11 is activated. When the power switch 51 is turned off, the power supply to the power supply circuit 17 is cut off, and the management controller 11 is stopped.
  • the management controller 11 is connected to the self-holding relay 44 via a control line 74. Management controller 11 controls self-holding relay 44 via control line 74 . The management controller 11 controls the self-holding relay 44 so that the supply of power to the power supply circuit 17 is cut off when the capacity of the storage battery 50 becomes equal to or less than a predetermined threshold value.
  • the control circuit 30 also includes a voltage sensor 47A that detects the voltage on the positive line 31A, a voltage sensor 47B that detects the voltage on the positive line 31B, a voltage sensor 48 that detects the voltage on the positive line 39, and a voltage sensor 48 that detects the voltage on the negative line 36. It has a current sensor 49 that detects current.
  • the management controller 11 can determine whether a malfunction of the charging contactor 41A has occurred based on the detection signal of the voltage sensor 47A. The management controller 11 can determine whether a malfunction of the charging contactor 41B has occurred based on the detection signal of the voltage sensor 47B. The management controller 11 can determine whether a malfunction of the discharge contactor 42 has occurred based on the detection signal of the voltage sensor 48.
  • the running inverter 61 converts the direct current from the positive electrode line 39 into three-phase alternating current and supplies it to the running motor 63.
  • the travel motor 63 is driven based on three-phase alternating current supplied from the travel inverter 61.
  • the traveling motor 63 operates the traveling device 3. In the embodiment, the travel motor 63 generates power to rotate at least one of the front wheels 3F and the rear wheels 3R.
  • the work equipment inverter 62 converts the direct current from the positive line 39 into three-phase alternating current and supplies it to the work equipment motor 64.
  • the work machine motor 64 is driven based on three-phase alternating current supplied from the work machine inverter 62.
  • the work machine motor 64 operates the work machine 4.
  • the work equipment motor 64 generates power to drive a hydraulic pump (not shown). Hydraulic oil discharged from the hydraulic pump is supplied to the working machine cylinder 7.
  • the work machine 4 is operated by supplying hydraulic oil to the work machine cylinder 7.
  • the power supply controller 12 is connected to the management controller 11 via a communication line 75. Power supply controller 12 is connected to master controller 13 via communication line 76 . The power supply controller 12 is a higher-level controller of the management controller 11. The management controller 11 operates based on a control signal from the power supply controller 12.
  • the master controller 13 controls the traveling inverter 61 and the work equipment inverter 62 based on the operations of the above-mentioned operating members. Master controller 13 controls travel inverter 61 based on, for example, operation of at least one of an accelerator pedal and a brake pedal. The master controller 13 controls the work machine inverter 62 based on the operation of the work lever.
  • the work machine 1 has a key switch 80.
  • the key switch 80 is arranged in at least a portion of the vehicle body 2.
  • the key switch 80 is operated by an operator seated on the driver's seat 8, for example. By turning on the key switch 80, the working machine 1 becomes ready for operation.
  • key-on when the key switch 80 is turned on, it is referred to as "key-on”, and when the key switch 80 is turned off, it is referred to as "key-off”.
  • FIG. 4 is a functional block diagram showing the management controller 11 according to the embodiment.
  • the temperature control system 100 includes a management controller 11, a power supply controller 12, and a battery controller 56.
  • Each of the power supply controller 12 and the battery controller 56 is connected to the management controller 11.
  • a master controller 13 , a key switch 80 , and a lock sensor 14 are connected to the power supply controller 12 .
  • a voltage sensor 53 and a temperature sensor 54 are each connected to the battery controller 56 .
  • the management controller 11 controls the heater contactor 43.
  • the heater 55 functions as a temperature control device that adjusts the temperature of the storage battery 50.
  • a storage battery 50 is used as a power source for the heater 55. Heater 55 operates based on power supplied from storage battery 50.
  • the management controller 11 includes a remaining capacity acquisition section 11A, a temperature acquisition section 11B, an operation determination section 11C, a threshold storage section 11D, a control stop section 11E, and a temperature control section 11F.
  • the remaining capacity acquisition unit 11A acquires the remaining capacity of the storage battery 50 mounted on the work machine 1.
  • the remaining capacity of the storage battery 50 may be regarded as the state of charge (SOC) of the storage battery 50.
  • SOC state of charge
  • the charging rate of the storage battery 50 refers to the ratio of the remaining capacity to the fully charged capacity.
  • Voltage sensor 53 detects the voltage of storage battery 50.
  • the battery controller 56 can calculate the remaining capacity of the storage battery 50 based on the detection signal of the voltage sensor 53, for example.
  • the remaining capacity acquisition unit 11A can acquire the remaining capacity of the storage battery 50 from the battery controller 56.
  • the temperature acquisition unit 11B acquires the temperature of the storage battery 50 mounted on the work machine 1.
  • the temperature of the storage battery 50 is detected by a temperature sensor 54.
  • a detection signal from temperature sensor 54 is sent to battery controller 56.
  • the temperature acquisition unit 11B can acquire the temperature of the storage battery 50 from the battery controller 56.
  • the operation determination unit 11C determines whether the work machine 1 is in operation or at rest.
  • the fact that the work machine 1 is in operation includes at least one of the fact that the work machine 1 is turned on and the charging device 20 that charges the storage battery 50 is in a charging operation.
  • the fact that the key to the work machine 1 has been turned on includes that the master controller 13 has been activated and that at least one of the travel motor 63 and the work implement motor 64 is in a drivable state. Further, the fact that the key of the work machine 1 is turned on includes that the traveling device 3 or the work machine 4 is in an operable state.
  • the fact that the charging device 20 is in a charging operation includes that the charging device 20 is connected to the connection unit 10 via the cable 21 and the plug 22 .
  • the fact that the charging device 20 is in a charging operation means that the charging device 20 is being prepared for charging after being connected to the connection unit 10 and before charging of the storage battery 50 is started, or that charging of the storage battery 50 has been started. This includes at least one of being in the middle of later charging, and being in the middle of charging after the charging of the storage battery 50 is completed.
  • preparation for charging for example, a process of diagnosing whether or not charging can be properly started is performed.
  • the work machine 1 being at rest includes the work machine 1 being keyed off and the charging device 20 being in a non-charging operation.
  • the fact that the key of the work machine 1 has been turned off includes that the master controller 13 has stopped and the travel motor 63 and the work machine motor 64 are in a state where they cannot be driven.
  • the fact that the key of the work machine 1 is turned off includes that the traveling device 3 and the work machine 4 are in an inoperable state.
  • the fact that the charging device 20 is in a non-charging operation includes that the charging device 20 is not connected to the connection unit 10 .
  • the operation determination unit 11C can determine whether the work machine 1 is in operation or at rest based on the operation data indicating the operation state of the work machine 1 sent from the power supply controller 12.
  • the operation data includes data indicating that the key has been turned on or off, data indicating that the master controller 13 has been activated, and data indicating that the charging device 20 has been connected to the connection unit 10.
  • the power supply controller 12 can recognize that the key to the working machine 1 has been turned on.
  • the power supply controller 12 can recognize that the key of the working machine 1 has been turned off.
  • the power supply controller 12 can recognize that the master controller 13 has been started.
  • the power supply controller 12 determines whether the charging device 20 is connected to the connection unit 10 based on the detection signal of the lock sensor 14 or the energization state of the energization line 15 acquired via the detection line 16. can be recognized.
  • the threshold storage unit 11D stores a threshold regarding the remaining capacity of the storage battery 50.
  • a plurality of threshold values are stored in advance in the threshold storage unit 11D.
  • the threshold values stored in the threshold storage unit 11D include a first threshold value that is used when it is determined that the work machine 1 is in operation, and a first threshold value that is used when it is determined that the work machine 1 is inactive. and a second threshold value.
  • the second threshold is greater than the first threshold.
  • the threshold values (first threshold value and second threshold value) are predetermined values. When the remaining capacity is considered as the charging rate, the first threshold is 5% and the second threshold is 15%, for example.
  • the temperature control unit 11F controls the heater 55 that adjusts the temperature of the storage battery 50 based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A and the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B. .
  • the temperature control unit 11F controls the heater 55 so that the temperature of the storage battery 50 exceeds a predetermined value when the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B is below a predetermined value indicating the lower limit of the recommended temperature range. do.
  • the predetermined value is 12°C.
  • a storage battery 50 is used as a power source for the heater 55. Heater 55 operates based on power supplied from storage battery 50.
  • the temperature control unit 11F controls the heater 55 by controlling the heater contactor 43 that connects and disconnects the heater 55 and the storage battery 50.
  • the heater 55 is turned on and off by the temperature control section 11F via the heater contactor 43.
  • the temperature control unit 11F turns on the heater contactor 43 so that power is supplied from the storage battery 50 to the heater 55 when the temperature of the storage battery 50 is below a predetermined value (12° C. or below).
  • a predetermined value (12° C. or below.
  • the temperature control unit 11F turns off the heater contactor 43 so that the supply of power from the storage battery 50 to the heater 55 is stopped when the temperature of the storage battery 50 exceeds a predetermined value (12° C.). By stopping the supply of power from the storage battery 50 to the heater 55, the operation of the heater 55 is stopped. Electric power from the storage battery 50 is not used by the heater 55.
  • the control stop unit 11E stops the control of the heater 55 by the temperature control unit 11F when the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A is equal to or less than the threshold stored in the threshold storage unit 11D.
  • the threshold value differs depending on whether the work machine 1 is in operation or stopped.
  • the threshold value when the work machine 1 is at rest is greater than the threshold value when the work machine 1 is in operation.
  • the threshold value when the work machine 1 is at rest is the above-mentioned second threshold value.
  • the threshold value when the work machine 1 is in operation is the above-mentioned first threshold value.
  • the control stop section 11E stops the control of the heater 55 by the temperature control section 11F when the remaining capacity of the storage battery 50 is below the first threshold value (5% or below).
  • the control stop section 11E stops the control of the heater 55 by the temperature control section 11F when the remaining capacity of the storage battery 50 is below the second threshold value (15% or below).
  • the control stop unit 11E does not stop the control of the heater 55 by the temperature control unit 11F when the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A exceeds the threshold stored in the threshold storage unit 11D.
  • the heater 55 is controlled on and off. That is, when the remaining capacity of the storage battery 50 exceeds the first threshold value and the temperature of the storage battery 50 becomes a predetermined value or less, the storage battery 50 is heated.
  • the heater 55 does not operate even if the temperature of the storage battery 50 becomes less than or equal to a predetermined value. That is, when the remaining capacity of the storage battery 50 is below the first threshold value, the storage battery 50 is not heated even if the temperature of the storage battery 50 becomes below the predetermined value.
  • the heater 55 is controlled to be turned on and off. That is, when the remaining capacity of the storage battery 50 exceeds the second threshold value and the temperature of the storage battery 50 becomes a predetermined value or less, the storage battery 50 is heated.
  • the heater 55 does not operate even if the temperature of the storage battery 50 becomes less than or equal to a predetermined value. That is, when the remaining capacity of the storage battery 50 is below the second threshold value, the storage battery 50 is not heated even if the temperature of the storage battery 50 becomes below the predetermined value.
  • the storage battery 50 when the work machine 1 is in operation, the storage battery 50 is maintained within the recommended temperature range until immediately before the remaining capacity of the storage battery 50 is exhausted. Thereby, necessary power can be extracted from the storage battery 50 until the remaining capacity of the storage battery 50 is exhausted. Further, as described above, when the temperature of the storage battery 50 is not within the recommended temperature range, the management controller 11 turns off the discharge contactor 42 so that the storage battery 50 does not discharge. When the work machine 1 is in operation, the storage battery 50 is maintained within the recommended temperature range until the remaining capacity of the storage battery 50 is exhausted, so the discharge contactor 42 continues to be turned on. Therefore, the electric power of the storage battery 50 contributes to the operation of the working machine 1.
  • the storage battery 50 When the work machine 1 is at rest, even if the heater 55 consumes the power of the storage battery 50, the remaining capacity of the storage battery 50 does not fall below the second threshold value. When the work machine 1 transitions from being at rest to being in operation, the storage battery 50 has a remaining capacity equal to at least the second threshold value, so that the operation of the work machine 1 is prevented from being hindered. Furthermore, even when the work machine 1 is at rest, if the remaining capacity of the storage battery 50 exceeds the second threshold, the storage battery 50 is adjusted to the recommended temperature range. Therefore, the temperature of the storage battery 50 is likely to be within the recommended temperature range immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, the necessary power can be extracted from the storage battery 50 immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, interference with the operation of the work machine 1 is suppressed.
  • FIG. 5 is a flowchart showing the temperature control method according to the embodiment.
  • the operation determination unit 11C acquires operation data indicating the operating state of the work machine 1 from the power supply controller 12 (step S1).
  • the remaining capacity acquisition unit 11A acquires the remaining capacity of the storage battery 50 from the battery controller 56 (step S2).
  • the operation determination unit 11C determines whether the work machine 1 is in operation or at rest based on the operation data acquired in step S1 (step S3).
  • step S3 when it is determined that the work machine 1 is in operation (step S3: Yes), the control stop unit 11E determines whether the remaining capacity of the storage battery 50 acquired in step S2 is below the first threshold value. Determination is made (step S4).
  • step S4 if it is determined that the remaining capacity of the storage battery 50 is less than or equal to the first threshold (step S4: Yes), the control stop section 11E stops the control of the heater 55 by the temperature control section 11F (step S5). Thereby, even if the temperature of the storage battery 50 falls below a predetermined value (12° C. or below), the storage battery 50 is not heated.
  • step S4 If it is determined in step S4 that the remaining capacity of the storage battery 50 exceeds the first threshold (step S4: No), the temperature acquisition unit 11B acquires the temperature of the storage battery 50 from the battery controller 56 (step S6).
  • the temperature control unit 11F determines whether the temperature acquired in step S6 is below a predetermined value (step S7).
  • step S7 if it is determined that the temperature of the storage battery 50 is below the predetermined value (step S7: Yes), the temperature control unit 11F turns on the heater contactor 43 (step S8). As a result, power is supplied from the storage battery 50 to the heater 55. The storage battery 50 is heated by a heater 55.
  • step S7 if it is determined that the temperature of the storage battery 50 exceeds the predetermined value (step S7: No), the temperature control unit 11F turns off the heater contactor 43 (step S9). As a result, the heater 55 does not operate. The heater 55 does not consume the power of the storage battery 50.
  • step S3 if it is determined that the work machine 1 is at rest (step S3: No), the control stop unit 11E determines whether the remaining capacity of the storage battery 50 acquired in step S2 is less than or equal to the second threshold. Determination is made (step S10).
  • step S10 if it is determined that the remaining capacity of the storage battery 50 is less than or equal to the second threshold (step S10: Yes), the control stop unit 11E stops the control of the heater 55 by the temperature control unit 11F (step S5).
  • step S10 If it is determined in step S10 that the remaining capacity of the storage battery 50 exceeds the second threshold (step S10: No), the temperature acquisition unit 11B acquires the temperature of the storage battery 50 from the battery controller 56 (step S6).
  • step S6 After the process of step S6, the process of step S7 described above and the process of either step S8 or step S9 are performed.
  • FIG. 6 is a block diagram showing a computer system 1000 according to an embodiment.
  • the computer system 1000 includes a processor 1001 such as a CPU (Central Processing Unit), a main memory 1002 including a non-volatile memory such as a ROM (Read Only Memory) and a volatile memory such as a RAM (Random Access Memory), It has a storage 1003 and an interface 1004 including an input/output circuit.
  • the functions of the management controller 11, power supply controller 12, master controller 13, charging controller 26, and battery controller 56 described above are stored in the storage 1003 as a computer program.
  • Processor 1001 reads a computer program from storage 1003, expands it to main memory 1002, and executes the above-described processing according to the program. Note that the computer program may be distributed to the computer system 1000 via a network.
  • the computer program or computer system 1000 acquires the remaining capacity of the storage battery 50 mounted on the working machine 1, acquires the temperature of the storage battery 50, and calculates the remaining capacity of the storage battery 50 and the storage battery 50 according to the embodiment described above. It is possible to control the heater 55 that adjusts the temperature of the storage battery 50 based on the temperature of the storage battery 50.
  • the temperature control system 100 includes the remaining capacity acquisition unit 11A that acquires the remaining capacity of the storage battery 50 mounted on the working machine 1, and the temperature acquisition unit 11B that acquires the temperature of the storage battery 50. , a temperature control unit 11F that controls a heater 55 that adjusts the temperature of the storage battery 50 based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A and the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B; , is provided.
  • the temperature control unit 11F can control the heater 55 so that the temperature of the storage battery 50 is within the recommended temperature range based on the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B. Furthermore, the temperature control unit 11F adjusts the power consumption of the storage battery 50 by the heater 55, based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A, so that the remaining capacity of the storage battery 50 maintains an appropriate value. can do. Therefore, temperature adjustment of the storage battery 50 by the heater 55 is suppressed from affecting the operation of the working machine 1.
  • the operation determination unit 11C determines whether the working machine 1 is in operation or at rest. Based on the determination result of the operation determination unit 11C, the threshold regarding the remaining capacity of the storage battery 50 is determined to be either the first threshold or the second threshold. When the remaining capacity of the storage battery 50 is below the threshold value, temperature adjustment of the storage battery 50 by the heater 55 is stopped. That is, when the remaining capacity of the storage battery 50 is below the threshold value, the heater 55 does not consume the power of the storage battery 50. Therefore, temperature adjustment of the storage battery 50 by the heater 55 is suppressed from affecting the operation of the working machine 1.
  • the storage battery 50 When the work machine 1 is in operation, if the remaining capacity of the storage battery 50 exceeds the first threshold value, the storage battery 50 is maintained within the recommended temperature range. Thereby, necessary power can be extracted from the storage battery 50 until the remaining capacity of the storage battery 50 is exhausted. That is, when the working machine 1 is in operation, the electric power of the storage battery 50 contributes to the operation of the working machine 1 until immediately before the remaining capacity of the storage battery 50 is exhausted. When the work machine 1 is at rest, even if the heater 55 consumes the power of the storage battery 50, the remaining capacity of the storage battery 50 does not fall below the second threshold value.
  • the storage battery 50 When the work machine 1 transitions from being at rest to being in operation, the storage battery 50 has a remaining capacity equal to at least the second threshold value, so that the operation of the work machine 1 is prevented from being hindered. Furthermore, even when the work machine 1 is at rest, if the remaining capacity of the storage battery 50 exceeds the second threshold, the storage battery 50 is adjusted to the recommended temperature range. Therefore, there is a high possibility that the temperature of the storage battery 50 is within the recommended temperature range even immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, necessary power can be extracted from the storage battery 50 immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, interference with the operation of the work machine 1 is suppressed.
  • the temperature control device that adjusts the temperature of the storage battery 50 is the heater 55 that heats the storage battery 50.
  • the temperature control device that adjusts the temperature of the storage battery 50 may be a chiller that cools the storage battery 50. When the temperature of the storage battery 50 reaches or exceeds the recommended temperature range, the storage battery 50 may be cooled by a chiller.
  • the working machine 1 is a battery forklift.
  • the work machine 1 may be a battery excavator, a battery wheel loader, a battery dump truck, a battery bulldozer, or the like.
  • the components described in the above embodiments can be applied to a working machine that uses a storage battery as a power source.
  • Control stop section 11F...Temperature control section, 12...Power controller, 13...Master controller, 14...Lock sensor, 15...Electricity line, 16...Detection line, 17...Power supply circuit, 20...Charging device, 20A...First charging Device, 20B... Second charging device, 21... Cable, 22... Plug, 23... Interface device, 23A... Operating device, 23B... Display device, 24... AC/DC conversion module, 25... Contactor, 26...

Abstract

This temperature control system comprises: a remaining-capacity acquisition unit that acquires the remaining capacity of a storage battery mounted in a work vehicle; a temperature acquisition unit that acquires the temperature of the storage battery; and a temperature control unit that controls a temperature control device for adjusting the temperature of the storage battery, on the basis of the remaining capacity acquired by the remaining-capacity acquisition unit and the temperature acquired by the temperature acquisition unit.

Description

温度制御システム、作業機械、及び温度制御方法Temperature control system, working machine, and temperature control method
　本開示は、温度制御システム、作業機械、及び温度制御方法に関する。 The present disclosure relates to a temperature control system, a work machine, and a temperature control method.
　作業機械に係る技術分野において、バッテリフォークリフト又はバッテリショベルのような、蓄電池を動力源とする作業機械が知られている。蓄電池の温度が低下した状態で蓄電池が放電されると、蓄電池が劣化する可能性がある。また、蓄電池の温度が低下すると、必要な電力を取り出せない可能性がある。そのため、蓄電池が推奨温度範囲になるように、温調装置を用いて蓄電池の温度を調整することが行われる。特許文献１には、バッテリフォークリフト等に搭載される充電式のバッテリを所定温度に保温するためのバッテリ保温装置が開示されている。 In the technical field related to working machines, working machines that use storage batteries as a power source, such as battery forklifts or battery excavators, are known. If the storage battery is discharged while the temperature of the storage battery has decreased, there is a possibility that the storage battery will deteriorate. Additionally, if the temperature of the storage battery drops, it may not be possible to extract the necessary power. Therefore, a temperature control device is used to adjust the temperature of the storage battery so that the temperature of the storage battery falls within the recommended temperature range. Patent Document 1 discloses a battery warming device for keeping a rechargeable battery mounted on a battery forklift or the like at a predetermined temperature.
特開２００２－０７５４６９号公報Japanese Patent Application Publication No. 2002-075469
　温調装置の電源として蓄電池が使用される場合、蓄電池の残容量が少ないにも関わらず温調装置が作動され続けると、作業機械の稼働に必要な蓄電池の容量が少なくなってしまう。一方、温調装置の作動が停止されると、蓄電池を推奨温度範囲に維持することが困難になる可能性がある。 When a storage battery is used as a power source for a temperature control device, if the temperature control device continues to operate even though the remaining capacity of the storage battery is low, the capacity of the storage battery necessary for operating the working machine will decrease. On the other hand, if the operation of the temperature control device is stopped, it may become difficult to maintain the storage battery within the recommended temperature range.
　本開示は、蓄電池の温度調整が作業機械の稼働に影響を及ぼすことを抑制することを目的とする。 The present disclosure aims to suppress the influence of temperature adjustment of a storage battery on the operation of a work machine.
　本開示に従えば、作業機械に搭載された蓄電池の残容量を取得する残容量取得部と、蓄電池の温度を取得する温度取得部と、残容量取得部により取得された残容量と温度取得部により取得された温度とに基づいて、蓄電池の温度を調整する温調装置を制御する温度制御部と、を備える、温度制御システムが提供される。 According to the present disclosure, there is a remaining capacity acquisition unit that acquires the remaining capacity of a storage battery installed in a working machine, a temperature acquisition unit that acquires the temperature of the storage battery, and a remaining capacity and temperature acquisition unit that are acquired by the remaining capacity acquisition unit. A temperature control system is provided, including a temperature control unit that controls a temperature control device that adjusts the temperature of the storage battery based on the temperature acquired by the temperature control unit.
　本開示によれば、蓄電池の温度調整が作業機械の稼働に影響を及ぼすことが抑制される。 According to the present disclosure, temperature adjustment of the storage battery is suppressed from affecting the operation of the work machine.
図１は、実施形態に係る作業機械を示す斜視図である。FIG. 1 is a perspective view showing a working machine according to an embodiment. 図２は、実施形態に係る作業機械の接続部を示す図である。FIG. 2 is a diagram showing a connection part of the working machine according to the embodiment. 図３は、実施形態に係る温度制御システムを示すブロック図である。FIG. 3 is a block diagram showing a temperature control system according to an embodiment. 図４は、実施形態に係る管理コントローラを示す機能ブロック図である。FIG. 4 is a functional block diagram showing the management controller according to the embodiment. 図５は、実施形態に係る温度制御方法を示すフローチャートである。FIG. 5 is a flowchart showing the temperature control method according to the embodiment. 図６は、実施形態に係るコンピュータシステムを示すブロック図である。FIG. 6 is a block diagram showing a computer system according to an embodiment.
　以下、本開示に係る実施形態について図面を参照しながら説明するが、本開示は実施形態に限定されない。以下で説明する実施形態の構成要素は、適宜組み合わせることができる。また、一部の構成要素を用いない場合もある。 Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. Furthermore, some components may not be used.
［作業機械］
　図１は、実施形態に係る作業機械１を示す斜視図である。実施形態においては、作業機械１が、蓄電池を動力源とするバッテリフォークリフトであることとする。 [Working machine]
FIG. 1 is a perspective view showing a working machine 1 according to an embodiment. In the embodiment, it is assumed that the working machine 1 is a battery forklift truck that uses a storage battery as a power source.
　作業機械１は、車体２と、走行装置３と、作業機４と、バッテリパック５と、接続部１０とを備える。 The working machine 1 includes a vehicle body 2, a traveling device 3, a working machine 4, a battery pack 5, and a connecting section 10.
　車体２は、フレーム２Ａと、収容部材２Ｂと、カウンタウエイト２Ｃとを有する。収容部材２Ｂは、フレーム２Ａに支持される。収容部材２Ｂは、車体２の後部に配置される。収容部材２Ｂは、バッテリパック５が配置されるバッテリ室を有する。カウンタウエイト２Ｃは、収容部材２Ｂの下方に配置される。 The vehicle body 2 includes a frame 2A, a housing member 2B, and a counterweight 2C. The housing member 2B is supported by the frame 2A. The housing member 2B is arranged at the rear of the vehicle body 2. The housing member 2B has a battery chamber in which the battery pack 5 is placed. The counterweight 2C is arranged below the housing member 2B.
　走行装置３は、車体２を支持する。走行装置３は、前輪３Ｆと、後輪３Ｒとを有する。 The traveling device 3 supports the vehicle body 2. The traveling device 3 has a front wheel 3F and a rear wheel 3R.
　作業機４は、車体２に支持される。作業機４は、車体２に支持されるマスト４Ａと、マスト４Ａに支持されるフォーク４Ｂとを有する。作業機４は、作業機シリンダ７により駆動される。作業機シリンダ７は、マスト４Ａを前後方向に傾斜させるチルトシリンダ７Ａと、フォーク４Ｂを上下方向に移動させるリフトシリンダ７Ｂとを含む。チルトシリンダ７Ａの駆動によりマスト４Ａが前後方向に傾斜されることにより、フォーク４Ｂは、マスト４Ａに支持された状態で前後方向に傾斜する。フォーク４Ｂは、リフトシリンダ７Ｂの駆動により、マスト４Ａに支持された状態で上下方向に移動する。 The work machine 4 is supported by the vehicle body 2. The work machine 4 includes a mast 4A supported by the vehicle body 2 and a fork 4B supported by the mast 4A. The work machine 4 is driven by a work machine cylinder 7. The work machine cylinder 7 includes a tilt cylinder 7A that tilts the mast 4A in the front-back direction, and a lift cylinder 7B that moves the fork 4B in the vertical direction. As the mast 4A is tilted in the front-rear direction by driving the tilt cylinder 7A, the fork 4B is tilted in the front-rear direction while being supported by the mast 4A. The fork 4B moves in the vertical direction while being supported by the mast 4A by driving the lift cylinder 7B.
　バッテリパック５は、蓄電池５０を含む。バッテリパック５は、収容部材２Ｂに収容される。蓄電池５０は、作業機械１の動力源である。蓄電池５０は、充電と放電とを繰り返すことができる。蓄電池５０として、リチウムイオン電池が例示される。実施形態において、複数のバッテリパック５が作業機械１に搭載される。実施形態において、バッテリパック５は、２つ設けられる。バッテリパック５は、第１バッテリパック５Ａと、第２バッテリパック５Ｂとを含む。 The battery pack 5 includes a storage battery 50. The battery pack 5 is housed in the housing member 2B. The storage battery 50 is a power source for the working machine 1. The storage battery 50 can be repeatedly charged and discharged. As the storage battery 50, a lithium ion battery is exemplified. In the embodiment, a plurality of battery packs 5 are mounted on the work machine 1. In the embodiment, two battery packs 5 are provided. Battery pack 5 includes a first battery pack 5A and a second battery pack 5B.
　作業機械１は、運転シート８に着座した操作者による運転操作により稼働する。運転シート８は、フレーム２Ａに支持される。作業機械１は、操作者により操作される複数の操作部材を有する。操作部材として、ステアリングホイール９が例示される。操作者は、手でステアリングホイール９を操作して、走行装置３を操舵する。また、不図示ではあるが、操作部材として、アクセルペダル、ブレーキペダル、作業機レバー、及び前後進レバーが例示される。操作者は、足でアクセルペダルを操作して、走行装置３を駆動する。操作者は、足でブレーキペダルを操作して、走行装置３を制動する。操作者は、手で作業機レバーを操作して、作業機４を動作させる。操作者は、手で前後進レバーを操作して、走行装置３の進行方向を前進と後進とに切り換える。 The work machine 1 is operated by an operator seated on a driving seat 8. The driver seat 8 is supported by the frame 2A. The work machine 1 has a plurality of operating members operated by an operator. A steering wheel 9 is exemplified as the operating member. The operator operates the steering wheel 9 by hand to steer the traveling device 3. Further, although not shown, examples of the operating members include an accelerator pedal, a brake pedal, a work implement lever, and a forward/reverse lever. The operator drives the traveling device 3 by operating the accelerator pedal with his or her foot. The operator brakes the traveling device 3 by operating the brake pedal with his or her foot. The operator operates the work implement 4 by manually operating the work implement lever. The operator manually operates the forward/reverse lever to switch the traveling direction of the traveling device 3 between forward and reverse.
　接続部１０は、充電装置２０に接続される。接続部１０は、収容部材２Ｂの後部に配置される。実施形態において、接続部１０は、作業機械１に複数設けられる。実施形態において、接続部１０は、２つ設けられる。接続部１０は、第１接続部１０Ａと、第２接続部１０Ｂとを含む。 The connection unit 10 is connected to the charging device 20. The connecting portion 10 is arranged at the rear of the housing member 2B. In the embodiment, a plurality of connection parts 10 are provided in the work machine 1. In the embodiment, two connection parts 10 are provided. The connecting portion 10 includes a first connecting portion 10A and a second connecting portion 10B.
　充電装置２０は、蓄電池５０を充電する。充電装置２０は、作業機械１の外部に配置される。充電装置２０は、作業機械１の外部から蓄電池５０を充電する。実施形態において、蓄電池５０は、複数の充電装置２０により同時に充電可能である。実施形態において、蓄電池５０は、２台の充電装置２０により同時に充電可能である。複数の接続部１０のそれぞれに複数の充電装置２０のそれぞれが接続される。実施形態において、充電装置２０は、第１接続部１０Ａに接続される第１充電装置２０Ａと、第２接続部１０Ｂに接続される第２充電装置２０Ｂとを含む。 The charging device 20 charges the storage battery 50. Charging device 20 is placed outside work machine 1 . Charging device 20 charges storage battery 50 from outside of working machine 1 . In the embodiment, the storage battery 50 can be charged simultaneously by a plurality of charging devices 20. In the embodiment, the storage battery 50 can be charged simultaneously by two charging devices 20. Each of the plurality of charging devices 20 is connected to each of the plurality of connection parts 10. In the embodiment, the charging device 20 includes a first charging device 20A connected to the first connecting portion 10A, and a second charging device 20B connected to the second connecting portion 10B.
　充電装置２０は、ケーブル２１及びプラグ２２を介して接続部１０に接続される。接続部１０は、プラグ２２が挿入される挿入口を含む。 The charging device 20 is connected to the connection unit 10 via a cable 21 and a plug 22. The connecting portion 10 includes an insertion port into which a plug 22 is inserted.
　充電装置２０は、インタフェース装置２３を有する。インタフェース装置２３は、操作者により操作される操作装置２３Ａと、表示データを表示する表示装置２３Ｂとを含む。操作装置２３Ａは、充電開始操作部２３１と、充電停止操作部２３２と、緊急停止操作部２３３とを含む。充電開始操作部２３１及び充電停止操作部２３２として、トグルスイッチ、ロッカスイッチ、又はプッシュボタンスイッチが例示される。緊急停止操作部２３３として、プッシュボタンスイッチが例示される。表示装置２３Ｂとして、液晶ディスプレイ又は有機ＥＬディスプレイのようなフラットパネルディスプレイが例示される。 The charging device 20 has an interface device 23. The interface device 23 includes an operating device 23A operated by an operator and a display device 23B that displays display data. The operating device 23A includes a charging start operating section 231, a charging stop operating section 232, and an emergency stop operating section 233. Examples of the charging start operating section 231 and the charging stop operating section 232 include a toggle switch, a rocker switch, and a push button switch. A push button switch is exemplified as the emergency stop operation section 233. As the display device 23B, a flat panel display such as a liquid crystal display or an organic EL display is exemplified.
［接続部］
　図２は、実施形態に係る作業機械１の接続部１０を示す図である。図１及び図２に示すように、作業機械１は、接続部１０を覆うカバー２Ｄを有する。第１接続部１０Ａと第２接続部１０Ｂとは、作業機械１の車幅方向に間隔をあけて配置される。車体２の後部に電源スイッチ５１及び稼働ランプ５２が配置される。電源スイッチ５１及び稼働ランプ５２は、第１接続部１０Ａと第２接続部１０Ｂとの間に配置される。電源スイッチ５１として、モーメンタリスイッチが例示される。稼働ランプ５２は、蓄電池５０の作動状態に基づいて作動する。蓄電池５０の作動状態は、充電状態及び放電状態を含む。一例として、蓄電池５０が充電状態である場合、稼働ランプ５２が点滅し、蓄電池５０が放電状態である場合、稼働ランプ５２が点灯する。 [Connection part]
FIG. 2 is a diagram showing the connection section 10 of the working machine 1 according to the embodiment. As shown in FIGS. 1 and 2, the working machine 1 has a cover 2D that covers the connection part 10. The first connecting portion 10A and the second connecting portion 10B are arranged with an interval in the vehicle width direction of the working machine 1. A power switch 51 and an operating lamp 52 are arranged at the rear of the vehicle body 2. The power switch 51 and the operation lamp 52 are arranged between the first connection part 10A and the second connection part 10B. As the power switch 51, a momentary switch is exemplified. The operating lamp 52 operates based on the operating state of the storage battery 50. The operating state of the storage battery 50 includes a charging state and a discharging state. As an example, when the storage battery 50 is in a charging state, the operating lamp 52 blinks, and when the storage battery 50 is in a discharging state, the operating lamp 52 lights up.
［温度制御システム］
　図３は、実施形態に係る温度制御システム１００を示すブロック図である。温度制御システム１００は、バッテリパック５と、充電装置２０と、接続部１０と、管理コントローラ１１と、制御回路３０と、電源コントローラ１２と、マスタコントローラ１３と、を有する。 [Temperature control system]
FIG. 3 is a block diagram showing the temperature control system 100 according to the embodiment. The temperature control system 100 includes a battery pack 5 , a charging device 20 , a connection section 10 , a management controller 11 , a control circuit 30 , a power supply controller 12 , and a master controller 13 .
　バッテリパック５は、作業機械１に搭載される。バッテリパック５は、蓄電池５０と、蓄電池５０の電圧を検出する電圧センサ５３と、蓄電池５０の温度を検出する温度センサ５４と、蓄電池５０を加温するヒータ５５と、バッテリコントローラ５６とを有する。 The battery pack 5 is mounted on the working machine 1. The battery pack 5 includes a storage battery 50, a voltage sensor 53 that detects the voltage of the storage battery 50, a temperature sensor 54 that detects the temperature of the storage battery 50, a heater 55 that heats the storage battery 50, and a battery controller 56.
　充電装置２０は、作業機械１の外部に配置される。充電装置２０は、操作装置２３Ａと、表示装置２３Ｂと、商用電源２７に接続されるＡＣ／ＤＣ変換モジュール２４と、商用電源２７とＡＣ／ＤＣ変換モジュール２４との間に配置されるコンタクタ２５と、充電コントローラ２６とを有する。 The charging device 20 is placed outside the work machine 1. The charging device 20 includes an operating device 23A, a display device 23B, an AC/DC conversion module 24 connected to a commercial power source 27, and a contactor 25 disposed between the commercial power source 27 and the AC/DC conversion module 24. , and a charging controller 26.
　操作装置２３Ａは、充電装置２０に充電動作させる充電開始操作部２３１と、充電装置２０に充電停止動作させる充電停止操作部２３２と、充電装置２０に緊急停止動作させる緊急停止操作部２３３とを含む。 The operating device 23A includes a charging start operating section 231 that causes the charging device 20 to perform a charging operation, a charging stop operating section 232 that causes the charging device 20 to perform a charging stop operation, and an emergency stop operating section 233 that causes the charging device 20 to perform an emergency stop operation. .
　接続部１０は、充電装置２０に接続される。接続部１０は、プラグ２２をロックするロック機構を有する。接続部１０は、充電装置２０のプラグ２２と接続部１０とがロックされたことを検出するロックセンサ１４を有する。接続部１０には、充電装置２０のプラグ２２と接続部１０とが接続されたときに通電される通電ライン１５が設けられる。通電ライン１５は、検出ライン１６を介して電源コントローラ１２に接続される。電源コントローラ１２は、ロックセンサ１４の検出信号又は検出ライン１６を介して取得される通電ライン１５の通電状態に基づいて、充電装置２０のプラグ２２と接続部１０とが接続されたか否かを判定することができる。 The connection unit 10 is connected to the charging device 20. The connecting portion 10 has a locking mechanism that locks the plug 22. The connection section 10 includes a lock sensor 14 that detects that the plug 22 of the charging device 20 and the connection section 10 are locked. The connecting portion 10 is provided with an energizing line 15 that is energized when the plug 22 of the charging device 20 and the connecting portion 10 are connected. The energizing line 15 is connected to the power controller 12 via the detection line 16 . The power supply controller 12 determines whether or not the plug 22 of the charging device 20 and the connecting portion 10 are connected based on the detection signal of the lock sensor 14 or the energization state of the energization line 15 acquired via the detection line 16. can do.
　制御回路３０は、接続部１０を介して充電装置２０の正極に接続される正極ライン３１と、接続部１０を介して充電装置２０の負極に接続される負極ライン３２と、接続部１０を介して管理コントローラ１１と充電コントローラ２６とを接続する信号ライン３３と、管理コントローラ１１とバッテリコントローラ５６とを接続する信号ライン３４とを有する。 The control circuit 30 includes a positive electrode line 31 connected to the positive electrode of the charging device 20 via the connecting portion 10 , a negative electrode line 32 connected to the negative electrode of the charging device 20 via the connecting portion 10 , and a negative electrode line 32 connected to the negative electrode of the charging device 20 via the connecting portion 10 . A signal line 33 connects the management controller 11 and the charging controller 26, and a signal line 34 connects the management controller 11 and the battery controller 56.
　信号ライン３３は、管理コントローラ１１と第１充電装置２０Ａの充電コントローラ２６とを接続する信号ライン３３Ａと、管理コントローラ１１と第２充電装置２０Ｂの充電コントローラ２６とを接続する信号ライン３３Ｂとを含む。 The signal line 33 includes a signal line 33A that connects the management controller 11 and the charging controller 26 of the first charging device 20A, and a signal line 33B that connects the management controller 11 and the charging controller 26 of the second charging device 20B. .
　信号ライン３４は、管理コントローラ１１と第１バッテリパック５Ａのバッテリコントローラ５６とを接続する信号ライン３４Ａと、管理コントローラ１１と第２バッテリパック５Ｂのバッテリコントローラ５６とを接続する信号ライン３４Ｂとを含む。 The signal line 34 includes a signal line 34A that connects the management controller 11 and the battery controller 56 of the first battery pack 5A, and a signal line 34B that connects the management controller 11 and the battery controller 56 of the second battery pack 5B. .
　第１充電装置２０Ａと第２充電装置２０Ｂとは、正極ライン３１に対して並列接続される。第１充電装置２０Ａと第２充電装置２０Ｂとは、負極ライン３２に対して並列接続される。第１充電装置２０Ａと正極ライン３１とは、正極ライン３１Ａを介して接続される。第２充電装置２０Ｂと正極ライン３１とは、正極ライン３１Ｂを介して接続される。第１充電装置２０Ａと負極ライン３２とは、負極ライン３２Ａを介して接続される。第２充電装置２０Ｂと負極ライン３２とは、負極ライン３２Ｂを介して接続される。 The first charging device 20A and the second charging device 20B are connected in parallel to the positive electrode line 31. The first charging device 20A and the second charging device 20B are connected in parallel to the negative electrode line 32. The first charging device 20A and the positive electrode line 31 are connected via the positive electrode line 31A. The second charging device 20B and the positive electrode line 31 are connected via the positive electrode line 31B. The first charging device 20A and the negative electrode line 32 are connected via the negative electrode line 32A. The second charging device 20B and the negative electrode line 32 are connected via the negative electrode line 32B.
　第１バッテリパック５Ａの蓄電池５０と第２バッテリパック５Ｂの蓄電池５０とは、直列接続される。正極ライン３１は、正極ライン３５を介して第１バッテリパック５Ａの蓄電池５０の正極に接続される。負極ライン３２は、負極ライン３６を介して第２バッテリパック５Ｂの蓄電池５０の負極に接続される。正極ライン３５にヒューズ３５Ａが配置される。 The storage battery 50 of the first battery pack 5A and the storage battery 50 of the second battery pack 5B are connected in series. The positive electrode line 31 is connected to the positive electrode of the storage battery 50 of the first battery pack 5A via the positive electrode line 35. The negative electrode line 32 is connected to the negative electrode of the storage battery 50 of the second battery pack 5B via the negative electrode line 36. A fuse 35A is arranged on the positive electrode line 35.
　第１バッテリパック５Ａのヒータ５５と第２バッテリパック５Ｂのヒータ５５とは、直列接続される。正極ライン３１は、正極ライン５７を介して第１バッテリパック５Ａのヒータ５５の正極に接続される。負極ライン３２は、負極ライン５８を介して第２バッテリパック５Ｂのヒータ５５の負極に接続される。 The heater 55 of the first battery pack 5A and the heater 55 of the second battery pack 5B are connected in series. The positive electrode line 31 is connected to the positive electrode of the heater 55 of the first battery pack 5A via the positive electrode line 57. The negative electrode line 32 is connected to the negative electrode of the heater 55 of the second battery pack 5B via the negative electrode line 58.
　正極ライン３５は、正極ライン３７及び正極ライン３９を介して走行インバータ６１及び作業機インバータ６２のそれぞれに接続される。負極ライン３６は、負極ライン３８及び負極ライン４０を介して走行インバータ６１及び作業機インバータ６２のそれぞれに接続される。走行インバータ６１と作業機インバータ６２とは、正極ライン３９に対して並列接続される。走行インバータ６１と作業機インバータ６２とは、負極ライン４０に対して並列接続される。 The positive electrode line 35 is connected to the traveling inverter 61 and the working machine inverter 62 via the positive electrode line 37 and the positive electrode line 39, respectively. The negative electrode line 36 is connected to the traveling inverter 61 and the working machine inverter 62 via the negative electrode line 38 and the negative electrode line 40, respectively. The travel inverter 61 and the work equipment inverter 62 are connected in parallel to the positive electrode line 39. Traveling inverter 61 and working machine inverter 62 are connected in parallel to negative electrode line 40 .
　また、制御回路３０は、正極ライン３１に配置される充電コンタクタ４１を有する。充電コンタクタ４１がＯＮされることにより、充電装置２０と蓄電池５０とが正極ライン３１及び正極ライン３５を介して接続され、蓄電池５０が充電装置２０により充電される。充電コンタクタ４１がＯＦＦされることにより、充電装置２０と蓄電池５０とが分離され、蓄電池５０が充電されない。 Further, the control circuit 30 includes a charging contactor 41 arranged on the positive electrode line 31. When the charging contactor 41 is turned on, the charging device 20 and the storage battery 50 are connected via the positive electrode line 31 and the positive electrode line 35, and the storage battery 50 is charged by the charging device 20. By turning off the charging contactor 41, the charging device 20 and the storage battery 50 are separated, and the storage battery 50 is not charged.
　実施形態において、充電コンタクタ４１は、第１充電装置２０Ａと蓄電池５０との接続と分離とを切り換える充電コンタクタ４１Ａと、第２充電装置２０Ｂと蓄電池５０との接続と分離とを切り換える充電コンタクタ４１Ｂとを含む。充電コンタクタ４１Ａは、正極ライン３１Ａに配置される。充電コンタクタ４１Ｂは、正極ライン３１Ｂに配置される。充電コンタクタ４１ＡがＯＮされることにより、第１充電装置２０Ａと蓄電池５０とが接続され、蓄電池５０が第１充電装置２０Ａにより充電される。充電コンタクタ４１ＡがＯＦＦされることにより、第１充電装置２０Ａと蓄電池５０とが分離され、蓄電池５０が第１充電装置２０Ａでは充電されない。充電コンタクタ４１ＢがＯＮされることにより、第２充電装置２０Ｂと蓄電池５０とが接続され、蓄電池５０が第２充電装置２０Ｂにより充電される。充電コンタクタ４１ＢがＯＦＦされることにより、第２充電装置２０Ｂと蓄電池５０とが分離され、蓄電池５０が第２充電装置２０Ｂでは充電されない。 In the embodiment, the charging contactor 41 includes a charging contactor 41A that switches between connecting and disconnecting the first charging device 20A and the storage battery 50, and a charging contactor 41B that switches between connecting and disconnecting the second charging device 20B and the storage battery 50. including. Charging contactor 41A is arranged on positive electrode line 31A. Charging contactor 41B is arranged on positive electrode line 31B. By turning on the charging contactor 41A, the first charging device 20A and the storage battery 50 are connected, and the storage battery 50 is charged by the first charging device 20A. By turning off the charging contactor 41A, the first charging device 20A and the storage battery 50 are separated, and the storage battery 50 is not charged by the first charging device 20A. By turning on the charging contactor 41B, the second charging device 20B and the storage battery 50 are connected, and the storage battery 50 is charged by the second charging device 20B. By turning off the charging contactor 41B, the second charging device 20B and the storage battery 50 are separated, and the storage battery 50 is not charged by the second charging device 20B.
　管理コントローラ１１は、制御ライン７１を介して充電コンタクタ４１に接続される。制御ライン７１は、管理コントローラ１１と充電コンタクタ４１Ａとを接続する制御ライン７１Ａと、管理コントローラ１１と充電コンタクタ４１Ｂとを接続する制御ライン７１Ｂとを含む。管理コントローラ１１は、制御ライン７１を介して充電コンタクタ４１を制御する。 The management controller 11 is connected to the charging contactor 41 via a control line 71. The control line 71 includes a control line 71A that connects the management controller 11 and the charging contactor 41A, and a control line 71B that connects the management controller 11 and the charging contactor 41B. Management controller 11 controls charging contactor 41 via control line 71 .
　また、制御回路３０は、正極ライン３７に配置される放電コンタクタ４２を有する。放電コンタクタ４２がＯＮされることにより、蓄電池５０と走行インバータ６１及び作業機インバータ６２のそれぞれとが正極ライン３７及び正極ライン３９を介して接続され、蓄電池５０からの放電により走行インバータ６１及び作業機インバータ６２のそれぞれに電力が供給される。放電コンタクタ４２がＯＦＦされることにより、蓄電池５０と走行インバータ６１及び作業機インバータ６２のそれぞれとが分離され、蓄電池５０から走行インバータ６１及び作業機インバータ６２のそれぞれに電力が供給されない。 Further, the control circuit 30 includes a discharge contactor 42 arranged on the positive electrode line 37. By turning on the discharge contactor 42, the storage battery 50 is connected to the traveling inverter 61 and the working machine inverter 62 via the positive electrode line 37 and the positive electrode line 39, and the traveling inverter 61 and the working machine are connected by discharging from the storage battery 50. Power is supplied to each of the inverters 62. By turning off the discharge contactor 42, the storage battery 50 is separated from each of the travel inverter 61 and the work equipment inverter 62, and power is not supplied from the storage battery 50 to each of the travel inverter 61 and the work equipment inverter 62.
　管理コントローラ１１は、制御ライン７２を介して放電コンタクタ４２に接続される。管理コントローラ１１は、制御ライン７２を介して放電コンタクタ４２を制御する。 The management controller 11 is connected to the discharge contactor 42 via a control line 72. The management controller 11 controls the discharge contactor 42 via a control line 72.
　また、制御回路３０は、正極ライン５７に配置されるヒータコンタクタ４３を有する。ヒータコンタクタ４３がＯＮされることにより、充電装置２０及び蓄電池５０の少なくとも一方とヒータ５５とが正極ライン５７を介して接続され、ヒータ５５に電力が供給される。ヒータコンタクタ４３がＯＦＦされることにより、充電装置２０及び蓄電池５０とヒータ５５とが分離され、ヒータ５５に電力が供給されない。 The control circuit 30 also includes a heater contactor 43 arranged on the positive electrode line 57. When the heater contactor 43 is turned on, at least one of the charging device 20 and the storage battery 50 is connected to the heater 55 via the positive electrode line 57, and power is supplied to the heater 55. By turning off heater contactor 43, charging device 20, storage battery 50, and heater 55 are separated, and power is not supplied to heater 55.
　管理コントローラ１１は、制御ライン７３を介してヒータコンタクタ４３に接続される。管理コントローラ１１は、制御ライン７３を介してヒータコンタクタ４３を制御する。 The management controller 11 is connected to the heater contactor 43 via a control line 73. The management controller 11 controls the heater contactor 43 via a control line 73.
　実施形態において、電圧センサ５３の検出信号は、信号ライン３４を介してバッテリコントローラ５６から管理コントローラ１１に送信される。温度センサ５４の検出信号は、信号ライン３４を介してバッテリコントローラ５６から管理コントローラ１１に送信される。 In the embodiment, the detection signal of the voltage sensor 53 is transmitted from the battery controller 56 to the management controller 11 via the signal line 34. A detection signal from the temperature sensor 54 is transmitted from the battery controller 56 to the management controller 11 via the signal line 34.
　蓄電池５０が放電するときの蓄電池５０の推奨電圧範囲及び推奨温度範囲が定められている。管理コントローラ１１は、蓄電池５０の電圧が推奨電圧範囲でない場合又は蓄電池５０の温度が推奨温度範囲でない場合、蓄電池５０が放電しないように、放電コンタクタ４２を制御する。すなわち、管理コントローラ１１は、電圧センサ５３の検出信号に基づいて、蓄電池５０の電圧が推奨電圧範囲でないと判定した場合、又は、温度センサ５４の検出信号に基づいて、蓄電池５０の温度が推奨温度範囲でないと判定した場合、放電コンタクタ４２をＯＦＦにする。管理コントローラ１１は、蓄電池５０の電圧が推奨電圧範囲であり、且つ、蓄電池５０の温度が推奨温度範囲であると判定した場合、放電コンタクタ４２をＯＮにする。 The recommended voltage range and recommended temperature range of the storage battery 50 when the storage battery 50 is discharged are determined. The management controller 11 controls the discharge contactor 42 so that the storage battery 50 does not discharge when the voltage of the storage battery 50 is not within the recommended voltage range or when the temperature of the storage battery 50 is not within the recommended temperature range. That is, when the management controller 11 determines that the voltage of the storage battery 50 is not within the recommended voltage range based on the detection signal of the voltage sensor 53, or based on the detection signal of the temperature sensor 54, the management controller 11 determines that the temperature of the storage battery 50 is within the recommended voltage range. If it is determined that it is not within the range, the discharge contactor 42 is turned off. When the management controller 11 determines that the voltage of the storage battery 50 is within the recommended voltage range and the temperature of the storage battery 50 is within the recommended temperature range, the management controller 11 turns on the discharge contactor 42.
　また、蓄電池５０を充電するときの蓄電池５０の推奨温度範囲が定められている。管理コントローラ１１は、温度センサ５４の検出信号に基づいて、蓄電池５０の温度が推奨温度範囲の下限値を示す所定値以下であると判定した場合、ヒータ５５に電力が供給されるように、ヒータコンタクタ４３を制御する。所定値は、予め定められた値である。ヒータ５５に電力が供給されることにより、蓄電池５０がヒータ５５により加温される。蓄電池５０がヒータ５５により加温されることにより、蓄電池５０の温度が推奨温度範囲になるまで上昇する。 Furthermore, a recommended temperature range for the storage battery 50 when charging the storage battery 50 is determined. When the management controller 11 determines that the temperature of the storage battery 50 is below a predetermined value indicating the lower limit of the recommended temperature range based on the detection signal of the temperature sensor 54, the management controller 11 controls the heater 55 so that power is supplied to the heater 55. Controls the contactor 43. The predetermined value is a predetermined value. By supplying electric power to the heater 55, the storage battery 50 is heated by the heater 55. By heating the storage battery 50 by the heater 55, the temperature of the storage battery 50 increases until it reaches the recommended temperature range.
　また、制御回路３０は、管理コントローラ１１の電源回路１７と、管理コントローラ１１の自己保持リレー４４とを有する。正極ライン３１は、電源スイッチ５１及び正極ライン４５を介して電源回路１７に接続される。また、正極ライン３１は、自己保持リレー４４を介して電源回路１７に接続される。負極ライン３２は、負極ライン４６を介して電源回路１７に接続される。上述のように、電源スイッチ５１は、車体２の後部に配置される。操作者は、電源スイッチ５１を操作することができる。電源スイッチ５１がＯＮされることにより、電源回路１７に電力が供給され、管理コントローラ１１が起動する。電源スイッチ５１がＯＦＦされることにより、電源回路１７に対する電力の供給が遮断され、管理コントローラ１１が停止する。 Furthermore, the control circuit 30 includes a power supply circuit 17 for the management controller 11 and a self-holding relay 44 for the management controller 11. The positive line 31 is connected to the power supply circuit 17 via the power switch 51 and the positive line 45 . Further, the positive line 31 is connected to the power supply circuit 17 via a self-holding relay 44 . Negative line 32 is connected to power supply circuit 17 via negative line 46 . As described above, the power switch 51 is arranged at the rear of the vehicle body 2. The operator can operate the power switch 51. When the power switch 51 is turned on, power is supplied to the power supply circuit 17 and the management controller 11 is activated. When the power switch 51 is turned off, the power supply to the power supply circuit 17 is cut off, and the management controller 11 is stopped.
　管理コントローラ１１は、制御ライン７４を介して自己保持リレー４４に接続される。管理コントローラ１１は、制御ライン７４を介して自己保持リレー４４を制御する。管理コントローラ１１は、蓄電池５０の容量が予め定められている閾値以下になったときに、電源回路１７に対する電力の供給が遮断されるように自己保持リレー４４を制御する。 The management controller 11 is connected to the self-holding relay 44 via a control line 74. Management controller 11 controls self-holding relay 44 via control line 74 . The management controller 11 controls the self-holding relay 44 so that the supply of power to the power supply circuit 17 is cut off when the capacity of the storage battery 50 becomes equal to or less than a predetermined threshold value.
　また、制御回路３０は、正極ライン３１Ａの電圧を検出する電圧センサ４７Ａと、正極ライン３１Ｂの電圧を検出する電圧センサ４７Ｂと、正極ライン３９の電圧を検出する電圧センサ４８と、負極ライン３６の電流を検出する電流センサ４９とを有する。 The control circuit 30 also includes a voltage sensor 47A that detects the voltage on the positive line 31A, a voltage sensor 47B that detects the voltage on the positive line 31B, a voltage sensor 48 that detects the voltage on the positive line 39, and a voltage sensor 48 that detects the voltage on the negative line 36. It has a current sensor 49 that detects current.
　管理コントローラ１１は、電圧センサ４７Ａの検出信号に基づいて、充電コンタクタ４１Ａの動作不良が発生したか否かを判定することができる。管理コントローラ１１は、電圧センサ４７Ｂの検出信号に基づいて、充電コンタクタ４１Ｂの動作不良が発生したか否かを判定することができる。管理コントローラ１１は、電圧センサ４８の検出信号に基づいて、放電コンタクタ４２の動作不良が発生したか否かを判定することができる。 The management controller 11 can determine whether a malfunction of the charging contactor 41A has occurred based on the detection signal of the voltage sensor 47A. The management controller 11 can determine whether a malfunction of the charging contactor 41B has occurred based on the detection signal of the voltage sensor 47B. The management controller 11 can determine whether a malfunction of the discharge contactor 42 has occurred based on the detection signal of the voltage sensor 48.
　走行インバータ６１は、正極ライン３９からの直流電流を三相交流電流に変換して、走行モータ６３に供給する。走行モータ６３は、走行インバータ６１から供給された三相交流電流に基づいて駆動する。走行モータ６３は、走行装置３を動作させる。実施形態において、走行モータ６３は、前輪３Ｆ及び後輪３Ｒの少なくとも一方を回転させる動力を発生する。 The running inverter 61 converts the direct current from the positive electrode line 39 into three-phase alternating current and supplies it to the running motor 63. The travel motor 63 is driven based on three-phase alternating current supplied from the travel inverter 61. The traveling motor 63 operates the traveling device 3. In the embodiment, the travel motor 63 generates power to rotate at least one of the front wheels 3F and the rear wheels 3R.
　作業機インバータ６２は、正極ライン３９からの直流電流を三相交流電流に変換して、作業機モータ６４に供給する。作業機モータ６４は、作業機インバータ６２から供給された三相交流電流に基づいて駆動する。作業機モータ６４は、作業機４を動作させる。実施形態において、作業機モータ６４は、不図示の油圧ポンプを駆動させる動力を発生する。油圧ポンプから吐出された作動油は、作業機シリンダ７に供給される。作業機シリンダ７に作動油が供給されることにより、作業機４が動作する。 The work equipment inverter 62 converts the direct current from the positive line 39 into three-phase alternating current and supplies it to the work equipment motor 64. The work machine motor 64 is driven based on three-phase alternating current supplied from the work machine inverter 62. The work machine motor 64 operates the work machine 4. In the embodiment, the work equipment motor 64 generates power to drive a hydraulic pump (not shown). Hydraulic oil discharged from the hydraulic pump is supplied to the working machine cylinder 7. The work machine 4 is operated by supplying hydraulic oil to the work machine cylinder 7.
　電源コントローラ１２は、通信ライン７５を介して管理コントローラ１１に接続される。電源コントローラ１２は、通信ライン７６を介してマスタコントローラ１３に接続される。電源コントローラ１２は、管理コントローラ１１の上位コントローラである。管理コントローラ１１は、電源コントローラ１２からの制御信号に基づいて作動する。 The power supply controller 12 is connected to the management controller 11 via a communication line 75. Power supply controller 12 is connected to master controller 13 via communication line 76 . The power supply controller 12 is a higher-level controller of the management controller 11. The management controller 11 operates based on a control signal from the power supply controller 12.
　マスタコントローラ１３は、上述の操作部材の操作に基づいて、走行インバータ６１及び作業機インバータ６２を制御する。マスタコントローラ１３は、例えばアクセルペダル及びブレーキペダルの少なくとも一方の操作に基づいて、走行インバータ６１を制御する。マスタコントローラ１３は、作業レバーの操作に基づいて、作業機インバータ６２を制御する。 The master controller 13 controls the traveling inverter 61 and the work equipment inverter 62 based on the operations of the above-mentioned operating members. Master controller 13 controls travel inverter 61 based on, for example, operation of at least one of an accelerator pedal and a brake pedal. The master controller 13 controls the work machine inverter 62 based on the operation of the work lever.
　作業機械１は、キースイッチ８０を有する。キースイッチ８０は、車体２の少なくとも一部に配置される。キースイッチ８０は、例えば運転シート８に着座した操作者により操作される。キースイッチ８０がＯＮされることにより、作業機械１は稼働可能な状態になる。以下の説明において、キースイッチ８０がＯＮされることを適宜、キーオンされる、と称し、キースイッチ８０がＯＦＦされることを適宜、キーオフされる、と称する。 The work machine 1 has a key switch 80. The key switch 80 is arranged in at least a portion of the vehicle body 2. The key switch 80 is operated by an operator seated on the driver's seat 8, for example. By turning on the key switch 80, the working machine 1 becomes ready for operation. In the following description, when the key switch 80 is turned on, it is referred to as "key-on", and when the key switch 80 is turned off, it is referred to as "key-off".
［管理コントローラ］
　図４は、実施形態に係る管理コントローラ１１を示す機能ブロック図である。図４に示すように、温度制御システム１００は、管理コントローラ１１と、電源コントローラ１２と、バッテリコントローラ５６とを備える。電源コントローラ１２及びバッテリコントローラ５６のそれぞれは、管理コントローラ１１に接続される。電源コントローラ１２には、マスタコントローラ１３、キースイッチ８０、及びロックセンサ１４のそれぞれが接続される。バッテリコントローラ５６には、電圧センサ５３及び温度センサ５４のそれぞれが接続される。管理コントローラ１１は、ヒータコンタクタ４３を制御する。ヒータ５５は、蓄電池５０の温度を調整する温調装置として機能する。実施形態においては、ヒータ５５の電源として、蓄電池５０が使用される。ヒータ５５は、蓄電池５０から供給される電力に基づいて作動する。 [Management controller]
FIG. 4 is a functional block diagram showing the management controller 11 according to the embodiment. As shown in FIG. 4, the temperature control system 100 includes a management controller 11, a power supply controller 12, and a battery controller 56. Each of the power supply controller 12 and the battery controller 56 is connected to the management controller 11. A master controller 13 , a key switch 80 , and a lock sensor 14 are connected to the power supply controller 12 . A voltage sensor 53 and a temperature sensor 54 are each connected to the battery controller 56 . The management controller 11 controls the heater contactor 43. The heater 55 functions as a temperature control device that adjusts the temperature of the storage battery 50. In the embodiment, a storage battery 50 is used as a power source for the heater 55. Heater 55 operates based on power supplied from storage battery 50.
　管理コントローラ１１は、残容量取得部１１Ａと、温度取得部１１Ｂと、稼働判定部１１Ｃと、閾値記憶部１１Ｄと、制御停止部１１Ｅと、温度制御部１１Ｆとを有する。 The management controller 11 includes a remaining capacity acquisition section 11A, a temperature acquisition section 11B, an operation determination section 11C, a threshold storage section 11D, a control stop section 11E, and a temperature control section 11F.
　残容量取得部１１Ａは、作業機械１に搭載された蓄電池５０の残容量を取得する。蓄電池５０の残容量は、蓄電池５０の充電率（ＳＯＣ：State　Of　Charge）とみなされてもよい。蓄電池５０の充電率とは、満充電容量に対する残容量の比率をいう。電圧センサ５３は、蓄電池５０の電圧を検出する。バッテリコントローラ５６は、例えば電圧センサ５３の検出信号に基づいて、蓄電池５０の残容量を算出することができる。残容量取得部１１Ａは、バッテリコントローラ５６から蓄電池５０の残容量を取得することができる。 The remaining capacity acquisition unit 11A acquires the remaining capacity of the storage battery 50 mounted on the work machine 1. The remaining capacity of the storage battery 50 may be regarded as the state of charge (SOC) of the storage battery 50. The charging rate of the storage battery 50 refers to the ratio of the remaining capacity to the fully charged capacity. Voltage sensor 53 detects the voltage of storage battery 50. The battery controller 56 can calculate the remaining capacity of the storage battery 50 based on the detection signal of the voltage sensor 53, for example. The remaining capacity acquisition unit 11A can acquire the remaining capacity of the storage battery 50 from the battery controller 56.
　温度取得部１１Ｂは、作業機械１に搭載された蓄電池５０の温度を取得する。蓄電池５０の温度は、温度センサ５４により検出される。温度センサ５４の検出信号は、バッテリコントローラ５６に送られる。温度取得部１１Ｂは、バッテリコントローラ５６から蓄電池５０の温度を取得することができる。 The temperature acquisition unit 11B acquires the temperature of the storage battery 50 mounted on the work machine 1. The temperature of the storage battery 50 is detected by a temperature sensor 54. A detection signal from temperature sensor 54 is sent to battery controller 56. The temperature acquisition unit 11B can acquire the temperature of the storage battery 50 from the battery controller 56.
　稼働判定部１１Ｃは、作業機械１が稼働中であるか休止中であるかを判定する。実施形態において、作業機械１が稼働中であることは、作業機械１がキーオンされたこと及び蓄電池５０を充電する充電装置２０が充電動作中であることの少なくとも一方を含む。作業機械１がキーオンされたことは、マスタコントローラ１３が起動され、走行モータ６３及び作業機モータ６４の少なくとも一方が駆動可能な状態であることを含む。また、作業機械１がキーオンされたことは、走行装置３又は作業機４が動作可能な状態であることを含む。充電装置２０が充電動作中であることは、ケーブル２１及びプラグ２２を介して充電装置２０が接続部１０に接続されていることを含む。充電装置２０が充電動作中であることは、充電装置２０が接続部１０に接続された後、蓄電池５０の充電が開始される前の充電準備中であること、蓄電池５０の充電が開始された後の充電中であること、及び蓄電池５０の充電が完了した後の充電完了中であることの少なくとも一つを含む。充電準備中においては、例えば充電を適正に開始可能か否かを診断する処理が実施される。 The operation determination unit 11C determines whether the work machine 1 is in operation or at rest. In the embodiment, the fact that the work machine 1 is in operation includes at least one of the fact that the work machine 1 is turned on and the charging device 20 that charges the storage battery 50 is in a charging operation. The fact that the key to the work machine 1 has been turned on includes that the master controller 13 has been activated and that at least one of the travel motor 63 and the work implement motor 64 is in a drivable state. Further, the fact that the key of the work machine 1 is turned on includes that the traveling device 3 or the work machine 4 is in an operable state. The fact that the charging device 20 is in a charging operation includes that the charging device 20 is connected to the connection unit 10 via the cable 21 and the plug 22 . The fact that the charging device 20 is in a charging operation means that the charging device 20 is being prepared for charging after being connected to the connection unit 10 and before charging of the storage battery 50 is started, or that charging of the storage battery 50 has been started. This includes at least one of being in the middle of later charging, and being in the middle of charging after the charging of the storage battery 50 is completed. During preparation for charging, for example, a process of diagnosing whether or not charging can be properly started is performed.
　実施形態において、作業機械１が休止中であることは、作業機械１がキーオフされたこと及び充電装置２０が非充電動作中であることを含む。作業機械１がキーオフされたことは、マスタコントローラ１３が停止し、走行モータ６３及び作業機モータ６４が駆動不可能な状態であることを含む。また、作業機械１がキーオフされたことは、走行装置３及び作業機４が動作不可能な状態であることを含む。充電装置２０が非充電動作中であることは、充電装置２０が接続部１０に接続されていないことを含む。 In the embodiment, the work machine 1 being at rest includes the work machine 1 being keyed off and the charging device 20 being in a non-charging operation. The fact that the key of the work machine 1 has been turned off includes that the master controller 13 has stopped and the travel motor 63 and the work machine motor 64 are in a state where they cannot be driven. Furthermore, the fact that the key of the work machine 1 is turned off includes that the traveling device 3 and the work machine 4 are in an inoperable state. The fact that the charging device 20 is in a non-charging operation includes that the charging device 20 is not connected to the connection unit 10 .
　稼働判定部１１Ｃは、電源コントローラ１２から送られる作業機械１の稼働状態を示す稼働データに基づいて、作業機械１が稼働中であるか休止中であるかを判定することができる。稼働データは、キーオン又はキーオフされたことを示すデータ、マスタコントローラ１３が起動されたことを示すデータ、及び充電装置２０が接続部１０に接続されたことを示すデータを含む。キースイッチ８０がＯＮされることにより、電源コントローラ１２は、作業機械１がキーオンされたことを認識することができる。キースイッチ８０がＯＦＦされることにより、電源コントローラ１２は、作業機械１がキーオフされたことを認識することができる。マスタコントローラ１３が起動されることにより、電源コントローラ１２は、マスタコントローラ１３が起動されたことを認識することができる。上述のように、電源コントローラ１２は、ロックセンサ１４の検出信号又は検出ライン１６を介して取得される通電ライン１５の通電状態に基づいて、充電装置２０が接続部１０に接続されているか否かを認識することができる。 The operation determination unit 11C can determine whether the work machine 1 is in operation or at rest based on the operation data indicating the operation state of the work machine 1 sent from the power supply controller 12. The operation data includes data indicating that the key has been turned on or off, data indicating that the master controller 13 has been activated, and data indicating that the charging device 20 has been connected to the connection unit 10. By turning on the key switch 80, the power supply controller 12 can recognize that the key to the working machine 1 has been turned on. By turning off the key switch 80, the power supply controller 12 can recognize that the key of the working machine 1 has been turned off. By starting the master controller 13, the power supply controller 12 can recognize that the master controller 13 has been started. As described above, the power supply controller 12 determines whether the charging device 20 is connected to the connection unit 10 based on the detection signal of the lock sensor 14 or the energization state of the energization line 15 acquired via the detection line 16. can be recognized.
　閾値記憶部１１Ｄは、蓄電池５０の残容量に関する閾値を記憶する。閾値記憶部１１Ｄには、複数の閾値が予め記憶されている。閾値記憶部１１Ｄに記憶されている閾値は、作業機械１が稼働中であると判定された場合に使用される第１閾値と、作業機械１が休止中であると判定された場合に使用される第２閾値とを含む。第２閾値は、第１閾値よりも大きい。閾値（第１閾値及び第２閾値）は、予め定められた値である。残容量を充電率とみなした場合、一例として、第１閾値は、５％であり、第２閾値は、１５％である。 The threshold storage unit 11D stores a threshold regarding the remaining capacity of the storage battery 50. A plurality of threshold values are stored in advance in the threshold storage unit 11D. The threshold values stored in the threshold storage unit 11D include a first threshold value that is used when it is determined that the work machine 1 is in operation, and a first threshold value that is used when it is determined that the work machine 1 is inactive. and a second threshold value. The second threshold is greater than the first threshold. The threshold values (first threshold value and second threshold value) are predetermined values. When the remaining capacity is considered as the charging rate, the first threshold is 5% and the second threshold is 15%, for example.
　温度制御部１１Ｆは、残容量取得部１１Ａにより取得された蓄電池５０の残容量と温度取得部１１Ｂにより取得された蓄電池５０の温度とに基づいて、蓄電池５０の温度を調整するヒータ５５を制御する。温度制御部１１Ｆは、温度取得部１１Ｂにより取得された蓄電池５０の温度が推奨温度範囲の下限値を示す所定値以下のときに、蓄電池５０の温度が所定値を上回るように、ヒータ５５を制御する。一例として、所定値は、１２℃である。ヒータ５５の電源として、蓄電池５０が使用される。ヒータ５５は、蓄電池５０から供給される電力に基づいて作動する。 The temperature control unit 11F controls the heater 55 that adjusts the temperature of the storage battery 50 based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A and the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B. . The temperature control unit 11F controls the heater 55 so that the temperature of the storage battery 50 exceeds a predetermined value when the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B is below a predetermined value indicating the lower limit of the recommended temperature range. do. As an example, the predetermined value is 12°C. A storage battery 50 is used as a power source for the heater 55. Heater 55 operates based on power supplied from storage battery 50.
　実施形態において、温度制御部１１Ｆは、ヒータ５５と蓄電池５０との接続及び分離を行うヒータコンタクタ４３を制御することにより、ヒータ５５を制御する。ヒータ５５は、ヒータコンタクタ４３を介して、温度制御部１１Ｆにオンオフ制御される。温度制御部１１Ｆは、蓄電池５０の温度が所定値以下（１２℃以下）のときに、蓄電池５０からヒータ５５に電力が供給されるように、ヒータコンタクタ４３をＯＮにする。蓄電池５０からヒータ５５に電力が供給されることにより、蓄電池５０がヒータ５５により加温される。蓄電池５０がヒータ５５により加温されることにより、蓄電池５０の温度が所定値を上回るまで上昇する。温度制御部１１Ｆは、蓄電池５０の温度が所定値（１２℃）を上回るときに、蓄電池５０からヒータ５５に対する電力の供給が停止されるように、ヒータコンタクタ４３をＯＦＦにする。蓄電池５０からヒータ５５に対する電力の供給が停止されることにより、ヒータ５５の作動が停止する。蓄電池５０の電力は、ヒータ５５に使用されない。 In the embodiment, the temperature control unit 11F controls the heater 55 by controlling the heater contactor 43 that connects and disconnects the heater 55 and the storage battery 50. The heater 55 is turned on and off by the temperature control section 11F via the heater contactor 43. The temperature control unit 11F turns on the heater contactor 43 so that power is supplied from the storage battery 50 to the heater 55 when the temperature of the storage battery 50 is below a predetermined value (12° C. or below). By supplying power from the storage battery 50 to the heater 55, the storage battery 50 is heated by the heater 55. By heating the storage battery 50 by the heater 55, the temperature of the storage battery 50 increases until it exceeds a predetermined value. The temperature control unit 11F turns off the heater contactor 43 so that the supply of power from the storage battery 50 to the heater 55 is stopped when the temperature of the storage battery 50 exceeds a predetermined value (12° C.). By stopping the supply of power from the storage battery 50 to the heater 55, the operation of the heater 55 is stopped. Electric power from the storage battery 50 is not used by the heater 55.
　制御停止部１１Ｅは、残容量取得部１１Ａにより取得された蓄電池５０の残容量が閾値記憶部１１Ｄに記憶されている閾値以下のときに、温度制御部１１Ｆによるヒータ５５の制御を停止させる。閾値は、作業機械１が稼働中と停止中とで異なる。作業機械１が休止中の閾値は、作業機械１が稼働中の閾値よりも大きい。作業機械１が休止中の閾値は、上述の第２閾値である。作業機械１が稼働中の閾値は、上述の第１閾値である。作業機械１が稼働中の場合、制御停止部１１Ｅは、蓄電池５０の残容量が第１閾値以下（５％以下）のときに、温度制御部１１Ｆによるヒータ５５の制御を停止させる。作業機械１が休止中の場合、制御停止部１１Ｅは、蓄電池５０の残容量が第２閾値以下（１５％以下）のときに、温度制御部１１Ｆによるヒータ５５の制御を停止させる。制御停止部１１Ｅは、残容量取得部１１Ａにより取得された蓄電池５０の残容量が閾値記憶部１１Ｄに記憶されている閾値を上回るときに、温度制御部１１Ｆによるヒータ５５の制御を停止させない。 The control stop unit 11E stops the control of the heater 55 by the temperature control unit 11F when the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A is equal to or less than the threshold stored in the threshold storage unit 11D. The threshold value differs depending on whether the work machine 1 is in operation or stopped. The threshold value when the work machine 1 is at rest is greater than the threshold value when the work machine 1 is in operation. The threshold value when the work machine 1 is at rest is the above-mentioned second threshold value. The threshold value when the work machine 1 is in operation is the above-mentioned first threshold value. When the work machine 1 is in operation, the control stop section 11E stops the control of the heater 55 by the temperature control section 11F when the remaining capacity of the storage battery 50 is below the first threshold value (5% or below). When the work machine 1 is at rest, the control stop section 11E stops the control of the heater 55 by the temperature control section 11F when the remaining capacity of the storage battery 50 is below the second threshold value (15% or below). The control stop unit 11E does not stop the control of the heater 55 by the temperature control unit 11F when the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A exceeds the threshold stored in the threshold storage unit 11D.
　すなわち、実施形態においては、作業機械１が稼働中の場合において、蓄電池５０の残容量が第１閾値を上回る場合（５％＜ＳＯＣ≦１００％の場合）、蓄電池５０の温度が所定値以下（１２℃以下）になると、ヒータ５５がオンオフ制御される。すなわち、蓄電池５０の残容量が第１閾値を上回る場合、蓄電池５０の温度が所定値以下になると、蓄電池５０が加温される。蓄電池５０の残容量が第１閾値以下の場合（ＳＯＣ≦５％の場合）、蓄電池５０の温度が所定値以下になっても、ヒータ５５は作動しない。すなわち、蓄電池５０の残容量が第１閾値以下の場合、蓄電池５０の温度が所定値以下になっても、蓄電池５０は加温されない。 That is, in the embodiment, when the working machine 1 is in operation and the remaining capacity of the storage battery 50 exceeds the first threshold value (5%<SOC≦100%), the temperature of the storage battery 50 is equal to or lower than the predetermined value ( 12° C. or lower), the heater 55 is controlled on and off. That is, when the remaining capacity of the storage battery 50 exceeds the first threshold value and the temperature of the storage battery 50 becomes a predetermined value or less, the storage battery 50 is heated. When the remaining capacity of the storage battery 50 is less than or equal to the first threshold value (SOC≦5%), the heater 55 does not operate even if the temperature of the storage battery 50 becomes less than or equal to a predetermined value. That is, when the remaining capacity of the storage battery 50 is below the first threshold value, the storage battery 50 is not heated even if the temperature of the storage battery 50 becomes below the predetermined value.
　作業機械１が休止中の場合において、蓄電池５０の残容量が第２閾値を上回る場合（１５％＜ＳＯＣ≦１００％の場合）、蓄電池５０の温度が所定値以下（１２℃以下）になると、ヒータ５５がオンオフ制御される。すなわち、蓄電池５０の残容量が第２閾値を上回る場合、蓄電池５０の温度が所定値以下になると、蓄電池５０が加温される。蓄電池５０の残容量が第２閾値以下の場合（ＳＯＣ≦１５％の場合）、蓄電池５０の温度が所定値以下になっても、ヒータ５５は作動しない。すなわち、蓄電池５０の残容量が第２閾値以下の場合、蓄電池５０の温度が所定値以下になっても、蓄電池５０は加温されない。 When the work machine 1 is at rest, if the remaining capacity of the storage battery 50 exceeds the second threshold (15%<SOC≦100%), and the temperature of the storage battery 50 falls below a predetermined value (12°C or below), The heater 55 is controlled to be turned on and off. That is, when the remaining capacity of the storage battery 50 exceeds the second threshold value and the temperature of the storage battery 50 becomes a predetermined value or less, the storage battery 50 is heated. When the remaining capacity of the storage battery 50 is less than or equal to the second threshold value (SOC≦15%), the heater 55 does not operate even if the temperature of the storage battery 50 becomes less than or equal to a predetermined value. That is, when the remaining capacity of the storage battery 50 is below the second threshold value, the storage battery 50 is not heated even if the temperature of the storage battery 50 becomes below the predetermined value.
　すなわち、作業機械１が稼働中の場合、蓄電池５０の残容量が無くなる直前まで、蓄電池５０が推奨温度範囲に維持される。これにより、蓄電池５０の残容量が無くなる直前まで、蓄電池５０から必要な電力を取り出せる。また、上述のように、管理コントローラ１１は、蓄電池５０の温度が推奨温度範囲でない場合、蓄電池５０が放電しないように、放電コンタクタ４２をＯＦＦする。作業機械１が稼働中の場合、蓄電池５０の残容量が無くなる直前まで、蓄電池５０が推奨温度範囲に維持されるので、放電コンタクタ４２がＯＮされ続ける。そのため、蓄電池５０の電力が作業機械１の稼働に寄与する。また、作業機械１が稼働中の場合、操作者が作業機械１に搭乗していたり、作業機械１の近くに居たりする可能性が高い。そのため、蓄電池５０の残容量が無くなる直前まで、ヒータ５５が蓄電池５０の電力を消費しても、操作者が充電装置２０で蓄電池５０を充電する作業を実施する可能性が高い。 That is, when the work machine 1 is in operation, the storage battery 50 is maintained within the recommended temperature range until immediately before the remaining capacity of the storage battery 50 is exhausted. Thereby, necessary power can be extracted from the storage battery 50 until the remaining capacity of the storage battery 50 is exhausted. Further, as described above, when the temperature of the storage battery 50 is not within the recommended temperature range, the management controller 11 turns off the discharge contactor 42 so that the storage battery 50 does not discharge. When the work machine 1 is in operation, the storage battery 50 is maintained within the recommended temperature range until the remaining capacity of the storage battery 50 is exhausted, so the discharge contactor 42 continues to be turned on. Therefore, the electric power of the storage battery 50 contributes to the operation of the working machine 1. Further, when the work machine 1 is in operation, there is a high possibility that the operator is on the work machine 1 or is near the work machine 1. Therefore, even if the heater 55 consumes the power of the storage battery 50 until the remaining capacity of the storage battery 50 is exhausted, there is a high possibility that the operator will charge the storage battery 50 with the charging device 20.
　作業機械１が休止中の場合、ヒータ５５が蓄電池５０の電力が消費しても、蓄電池５０の残容量は第２閾値以下にならない。作業機械１が休止中から稼働中に移行する場合、蓄電池５０には少なくとも第２閾値分の残容量が存在するので、作業機械１の稼働に支障をきたすことが抑制される。また、作業機械１が休止中においても、蓄電池５０の残容量が第２閾値を上回る場合、蓄電池５０が推奨温度範囲に調整される。そのため、作業機械１が休止中から稼働中に移行した直後において、蓄電池５０は推奨温度範囲である可能性が高い。したがって、作業機械１が休止中から稼働中に移行した直後において、蓄電池５０から必要な電力を取り出せる。そのため、作業機械１の稼働に支障をきたすことが抑制される。 When the work machine 1 is at rest, even if the heater 55 consumes the power of the storage battery 50, the remaining capacity of the storage battery 50 does not fall below the second threshold value. When the work machine 1 transitions from being at rest to being in operation, the storage battery 50 has a remaining capacity equal to at least the second threshold value, so that the operation of the work machine 1 is prevented from being hindered. Furthermore, even when the work machine 1 is at rest, if the remaining capacity of the storage battery 50 exceeds the second threshold, the storage battery 50 is adjusted to the recommended temperature range. Therefore, the temperature of the storage battery 50 is likely to be within the recommended temperature range immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, the necessary power can be extracted from the storage battery 50 immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, interference with the operation of the work machine 1 is suppressed.
［温度制御方法］
　次に、実施形態に係る温度制御方法について説明する。図５は、実施形態に係る温度制御方法を示すフローチャートである。 [Temperature control method]
Next, a temperature control method according to an embodiment will be explained. FIG. 5 is a flowchart showing the temperature control method according to the embodiment.
　稼働判定部１１Ｃは、電源コントローラ１２から作業機械１の稼働状態を示す稼働データを取得する（ステップＳ１）。 The operation determination unit 11C acquires operation data indicating the operating state of the work machine 1 from the power supply controller 12 (step S1).
　残容量取得部１１Ａは、バッテリコントローラ５６から蓄電池５０の残容量を取得する（ステップＳ２）。 The remaining capacity acquisition unit 11A acquires the remaining capacity of the storage battery 50 from the battery controller 56 (step S2).
　稼働判定部１１Ｃは、ステップＳ１において取得した稼働データに基づいて、作業機械１が稼働中であるか休止中であるかを判定する（ステップＳ３）。 The operation determination unit 11C determines whether the work machine 1 is in operation or at rest based on the operation data acquired in step S1 (step S3).
　ステップＳ３において、作業機械１が稼働中であると判定された場合（ステップＳ３：Ｙｅｓ）、制御停止部１１Ｅは、ステップＳ２において取得された蓄電池５０の残容量が第１閾値以下か否かを判定する（ステップＳ４）。 In step S3, when it is determined that the work machine 1 is in operation (step S3: Yes), the control stop unit 11E determines whether the remaining capacity of the storage battery 50 acquired in step S2 is below the first threshold value. Determination is made (step S4).
　ステップＳ４において、蓄電池５０の残容量が第１閾値以下であると判定した場合（ステップＳ４：Ｙｅｓ）、制御停止部１１Ｅは、温度制御部１１Ｆによるヒータ５５の制御を停止させる（ステップＳ５）。これにより、蓄電池５０の温度が所定値以下（１２℃以下）になっても、蓄電池５０は加温されない。 In step S4, if it is determined that the remaining capacity of the storage battery 50 is less than or equal to the first threshold (step S4: Yes), the control stop section 11E stops the control of the heater 55 by the temperature control section 11F (step S5). Thereby, even if the temperature of the storage battery 50 falls below a predetermined value (12° C. or below), the storage battery 50 is not heated.
　ステップＳ４において、蓄電池５０の残容量が第１閾値を上回ると判定された場合（ステップＳ４：Ｎｏ）、温度取得部１１Ｂは、バッテリコントローラ５６から蓄電池５０の温度を取得する（ステップＳ６）。 If it is determined in step S4 that the remaining capacity of the storage battery 50 exceeds the first threshold (step S4: No), the temperature acquisition unit 11B acquires the temperature of the storage battery 50 from the battery controller 56 (step S6).
　温度制御部１１Ｆは、ステップＳ６において取得された温度が所定値以下か否かを判定する（ステップＳ７）。 The temperature control unit 11F determines whether the temperature acquired in step S6 is below a predetermined value (step S7).
　ステップＳ７において、蓄電池５０の温度が所定値以下であると判定した場合（ステップＳ７：Ｙｅｓ）、温度制御部１１Ｆは、ヒータコンタクタ４３をＯＮにする（ステップＳ８）。これにより、蓄電池５０からヒータ５５に電力が供給される。蓄電池５０は、ヒータ５５により加温される。 In step S7, if it is determined that the temperature of the storage battery 50 is below the predetermined value (step S7: Yes), the temperature control unit 11F turns on the heater contactor 43 (step S8). As a result, power is supplied from the storage battery 50 to the heater 55. The storage battery 50 is heated by a heater 55.
　ステップＳ７において、蓄電池５０の温度が所定値を上回ると判定した場合（ステップＳ７：Ｎｏ）、温度制御部１１Ｆは、ヒータコンタクタ４３をＯＦＦにする（ステップＳ９）。これにより、ヒータ５５は、作動しない。ヒータ５５は、蓄電池５０の電力を消費しない。 In step S7, if it is determined that the temperature of the storage battery 50 exceeds the predetermined value (step S7: No), the temperature control unit 11F turns off the heater contactor 43 (step S9). As a result, the heater 55 does not operate. The heater 55 does not consume the power of the storage battery 50.
　ステップＳ３において、作業機械１が休止中であると判定された場合（ステップＳ３：Ｎｏ）、制御停止部１１Ｅは、ステップＳ２において取得された蓄電池５０の残容量が第２閾値以下か否かを判定する（ステップＳ１０）。 In step S3, if it is determined that the work machine 1 is at rest (step S3: No), the control stop unit 11E determines whether the remaining capacity of the storage battery 50 acquired in step S2 is less than or equal to the second threshold. Determination is made (step S10).
　ステップＳ１０において、蓄電池５０の残容量が第２閾値以下であると判定した場合（ステップＳ１０：Ｙｅｓ）、制御停止部１１Ｅは、温度制御部１１Ｆによるヒータ５５の制御を停止させる（ステップＳ５）。 In step S10, if it is determined that the remaining capacity of the storage battery 50 is less than or equal to the second threshold (step S10: Yes), the control stop unit 11E stops the control of the heater 55 by the temperature control unit 11F (step S5).
　ステップＳ１０において、蓄電池５０の残容量が第２閾値を上回ると判定された場合（ステップＳ１０：Ｎｏ）、温度取得部１１Ｂは、バッテリコントローラ５６から蓄電池５０の温度を取得する（ステップＳ６）。 If it is determined in step S10 that the remaining capacity of the storage battery 50 exceeds the second threshold (step S10: No), the temperature acquisition unit 11B acquires the temperature of the storage battery 50 from the battery controller 56 (step S6).
　ステップＳ６の処理の後、上述のステップＳ７の処理と、ステップＳ８及びステップＳ９のいずれか一方の処理とが実施される。 After the process of step S6, the process of step S7 described above and the process of either step S8 or step S9 are performed.
［コンピュータシステム］
　図６は、実施形態に係るコンピュータシステム１０００を示すブロック図である。上述の管理コントローラ１１、電源コントローラ１２、マスタコントローラ１３、充電コントローラ２６、及びバッテリコントローラ５６のそれぞれは、コンピュータシステム１０００を含む。コンピュータシステム１０００は、ＣＰＵ（Central　Processing　Unit）のようなプロセッサ１００１と、ＲＯＭ（Read　Only　Memory）のような不揮発性メモリ及びＲＡＭ（Random　Access　Memory）のような揮発性メモリを含むメインメモリ１００２と、ストレージ１００３と、入出力回路を含むインタフェース１００４とを有する。上述の管理コントローラ１１、電源コントローラ１２、マスタコントローラ１３、充電コントローラ２６、及びバッテリコントローラ５６のそれぞれの機能は、コンピュータプログラムとしてストレージ１００３に記憶されている。プロセッサ１００１は、コンピュータプログラムをストレージ１００３から読み出してメインメモリ１００２に展開し、プログラムに従って上述の処理を実行する。なお、コンピュータプログラムは、ネットワークを介してコンピュータシステム１０００に配信されてもよい。 [Computer system]
FIG. 6 is a block diagram showing a computer system 1000 according to an embodiment. Each of the management controller 11, power supply controller 12, master controller 13, charging controller 26, and battery controller 56 described above includes a computer system 1000. The computer system 1000 includes a processor 1001 such as a CPU (Central Processing Unit), a main memory 1002 including a non-volatile memory such as a ROM (Read Only Memory) and a volatile memory such as a RAM (Random Access Memory), It has a storage 1003 and an interface 1004 including an input/output circuit. The functions of the management controller 11, power supply controller 12, master controller 13, charging controller 26, and battery controller 56 described above are stored in the storage 1003 as a computer program. Processor 1001 reads a computer program from storage 1003, expands it to main memory 1002, and executes the above-described processing according to the program. Note that the computer program may be distributed to the computer system 1000 via a network.
　コンピュータプログラム又はコンピュータシステム１０００は、上述の実施形態に従って、作業機械１に搭載された蓄電池５０の残容量を取得することと、蓄電池５０の温度を取得することと、蓄電池５０の残容量と蓄電池５０の温度とに基づいて、蓄電池５０の温度を調整するヒータ５５を制御することと、を実行することができる。 The computer program or computer system 1000 acquires the remaining capacity of the storage battery 50 mounted on the working machine 1, acquires the temperature of the storage battery 50, and calculates the remaining capacity of the storage battery 50 and the storage battery 50 according to the embodiment described above. It is possible to control the heater 55 that adjusts the temperature of the storage battery 50 based on the temperature of the storage battery 50.
［効果］
　以上説明したように、実施形態に係る温度制御システム１００は、作業機械１に搭載された蓄電池５０の残容量を取得する残容量取得部１１Ａと、蓄電池５０の温度を取得する温度取得部１１Ｂと、残容量取得部１１Ａにより取得された蓄電池５０の残容量と温度取得部１１Ｂにより取得された蓄電池５０の温度とに基づいて、蓄電池５０の温度を調整するヒータ５５を制御する温度制御部１１Ｆと、を備える。 [effect]
As described above, the temperature control system 100 according to the embodiment includes the remaining capacity acquisition unit 11A that acquires the remaining capacity of the storage battery 50 mounted on the working machine 1, and the temperature acquisition unit 11B that acquires the temperature of the storage battery 50. , a temperature control unit 11F that controls a heater 55 that adjusts the temperature of the storage battery 50 based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A and the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B; , is provided.
　実施形態によれば、温度制御部１１Ｆは、温度取得部１１Ｂにより取得された蓄電池５０の温度に基づいて、蓄電池５０が推奨温度範囲になるように、ヒータ５５を制御することができる。また、温度制御部１１Ｆは、残容量取得部１１Ａにより取得された蓄電池５０の残容量に基づいて、蓄電池５０の残容量が適正値を維持するように、ヒータ５５による蓄電池５０の電力消費を調整することができる。そのため、ヒータ５５による蓄電池５０の温度調整が、作業機械１の稼働に影響を及ぼすことが抑制される。 According to the embodiment, the temperature control unit 11F can control the heater 55 so that the temperature of the storage battery 50 is within the recommended temperature range based on the temperature of the storage battery 50 acquired by the temperature acquisition unit 11B. Furthermore, the temperature control unit 11F adjusts the power consumption of the storage battery 50 by the heater 55, based on the remaining capacity of the storage battery 50 acquired by the remaining capacity acquisition unit 11A, so that the remaining capacity of the storage battery 50 maintains an appropriate value. can do. Therefore, temperature adjustment of the storage battery 50 by the heater 55 is suppressed from affecting the operation of the working machine 1.
　実施形態においては、作業機械１が稼働中であるか休止中であるかが稼働判定部１１Ｃにより判定される。稼働判定部１１Ｃの判定結果に基づいて、蓄電池５０の残容量に関する閾値が第１閾値又は第２閾値のいずれか一方に決定される。蓄電池５０の残容量が閾値以下の場合、ヒータ５５による蓄電池５０の温度調整が停止される。すなわち、蓄電池５０の残容量が閾値以下の場合、ヒータ５５は蓄電池５０の電力を消費しない。そのため、ヒータ５５による蓄電池５０の温度調整が、作業機械１の稼働に影響を及ぼすことが抑制される。 In the embodiment, the operation determination unit 11C determines whether the working machine 1 is in operation or at rest. Based on the determination result of the operation determination unit 11C, the threshold regarding the remaining capacity of the storage battery 50 is determined to be either the first threshold or the second threshold. When the remaining capacity of the storage battery 50 is below the threshold value, temperature adjustment of the storage battery 50 by the heater 55 is stopped. That is, when the remaining capacity of the storage battery 50 is below the threshold value, the heater 55 does not consume the power of the storage battery 50. Therefore, temperature adjustment of the storage battery 50 by the heater 55 is suppressed from affecting the operation of the working machine 1.
　作業機械１が稼働中の場合、蓄電池５０の残容量が第１閾値を上回っていれば、蓄電池５０が推奨温度範囲に維持される。これにより、蓄電池５０の残容量が無くなる直前まで、蓄電池５０から必要な電力を取り出せる。すなわち、作業機械１が稼働中の場合、蓄電池５０の残容量が無くなる直前まで、蓄電池５０の電力が作業機械１の稼働に寄与する。作業機械１が休止中の場合、ヒータ５５が蓄電池５０の電力を消費しても、蓄電池５０の残容量は第２閾値以下にならない。作業機械１が休止中から稼働中に移行する場合、蓄電池５０には少なくとも第２閾値分の残容量が存在するので、作業機械１の稼働に支障をきたすことが抑制される。また、作業機械１が休止中においても、蓄電池５０の残容量が第２閾値を上回っている場合には、蓄電池５０が推奨温度範囲に調整される。そのため、作業機械１が休止中から稼働中に移行した直後においても、蓄電池５０が推奨温度範囲である可能性が高い。したがって、作業機械１が休止中から稼働中に移行した直後において、蓄電池５０から必要な電力を取り出せる。そのため、作業機械１の稼働に支障をきたすことが抑制される。 When the work machine 1 is in operation, if the remaining capacity of the storage battery 50 exceeds the first threshold value, the storage battery 50 is maintained within the recommended temperature range. Thereby, necessary power can be extracted from the storage battery 50 until the remaining capacity of the storage battery 50 is exhausted. That is, when the working machine 1 is in operation, the electric power of the storage battery 50 contributes to the operation of the working machine 1 until immediately before the remaining capacity of the storage battery 50 is exhausted. When the work machine 1 is at rest, even if the heater 55 consumes the power of the storage battery 50, the remaining capacity of the storage battery 50 does not fall below the second threshold value. When the work machine 1 transitions from being at rest to being in operation, the storage battery 50 has a remaining capacity equal to at least the second threshold value, so that the operation of the work machine 1 is prevented from being hindered. Furthermore, even when the work machine 1 is at rest, if the remaining capacity of the storage battery 50 exceeds the second threshold, the storage battery 50 is adjusted to the recommended temperature range. Therefore, there is a high possibility that the temperature of the storage battery 50 is within the recommended temperature range even immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, necessary power can be extracted from the storage battery 50 immediately after the work machine 1 shifts from being at rest to being in operation. Therefore, interference with the operation of the work machine 1 is suppressed.
［その他の実施形態］
　上述の実施形態において、蓄電池５０の温度を調整する温調装置が、蓄電池５０を加温するヒータ５５であることとした。蓄電池５０の温度を調整する温調装置は、蓄電池５０を冷却するチラーでもよい。蓄電池５０が推奨温度範囲以上になったとき、チラーにより蓄電池５０が冷却されてもよい。 [Other embodiments]
In the embodiment described above, the temperature control device that adjusts the temperature of the storage battery 50 is the heater 55 that heats the storage battery 50. The temperature control device that adjusts the temperature of the storage battery 50 may be a chiller that cools the storage battery 50. When the temperature of the storage battery 50 reaches or exceeds the recommended temperature range, the storage battery 50 may be cooled by a chiller.
　上述の実施形態において、作業機械１がバッテリフォークリフトであることとした。作業機械１は、バッテリショベル、バッテリホイールローダ、バッテリダンプトラック、又はバッテリブルドーザ等でもよい。上述の実施形態において説明した構成要素は、蓄電池を動力源とする作業機械に適用することができる。 In the embodiment described above, the working machine 1 is a battery forklift. The work machine 1 may be a battery excavator, a battery wheel loader, a battery dump truck, a battery bulldozer, or the like. The components described in the above embodiments can be applied to a working machine that uses a storage battery as a power source.
　１…作業機械、２…車体、２Ａ…フレーム、２Ｂ…収容部材、２Ｃ…カウンタウエイト、２Ｄ…カバー、３…走行装置、３Ｆ…前輪、３Ｒ…後輪、４…作業機、４Ａ…マスト、４Ｂ…フォーク、５…バッテリパック、５Ａ…第１バッテリパック、５Ｂ…第２バッテリパック、７…作業機シリンダ、７Ａ…チルトシリンダ、７Ｂ…リフトシリンダ、８…運転シート、９…ステアリングホイール、１０…接続部、１０Ａ…第１接続部、１０Ｂ…第２接続部、１１…管理コントローラ、１１Ａ…残容量取得部、１１Ｂ…温度取得部、１１Ｃ…稼働判定部、１１Ｄ…閾値記憶部、１１Ｅ…制御停止部、１１Ｆ…温度制御部、１２…電源コントローラ、１３…マスタコントローラ、１４…ロックセンサ、１５…通電ライン、１６…検出ライン、１７…電源回路、２０…充電装置、２０Ａ…第１充電装置、２０Ｂ…第２充電装置、２１…ケーブル、２２…プラグ、２３…インタフェース装置、２３Ａ…操作装置、２３Ｂ…表示装置、２４…ＡＣ／ＤＣ変換モジュール、２５…コンタクタ、２６…充電コントローラ、２７…商用電源、３０…制御回路、３１…正極ライン、３１Ａ…正極ライン、３１Ｂ…正極ライン、３２…負極ライン、３２Ａ…負極ライン、３２Ｂ…負極ライン、３３…信号ライン、３３Ａ…信号ライン、３３Ｂ…信号ライン、３４…信号ライン、３４Ａ…信号ライン、３４Ｂ…信号ライン、３５…正極ライン、３５Ａ…ヒューズ、３６…負極ライン、３７…正極ライン、３８…負極ライン、３９…正極ライン、４０…負極ライン、４１…充電コンタクタ、４１Ａ…充電コンタクタ、４１Ｂ…充電コンタクタ、４２…放電コンタクタ、４３…ヒータコンタクタ、４４…自己保持リレー、４５…正極ライン、４６…負極ライン、４７Ａ…電圧センサ、４７Ｂ…電圧センサ、４８…電圧センサ、４９…電流センサ、５０…蓄電池、５１…電源スイッチ、５２…稼働ランプ、５３…電圧センサ、５４…温度センサ、５５…ヒータ（温調装置）、５６…バッテリコントローラ、５７…正極ライン、５８…負極ライン、６１…走行インバータ、６２…作業機インバータ、６３…走行モータ、６４…作業機モータ、７１…制御ライン、７１Ａ…制御ライン、７１Ｂ…制御ライン、７２…制御ライン、７３…制御ライン、７４…制御ライン、７５…通信ライン、７６…通信ライン、８０…キースイッチ、１００…温度制御システム、２３１…充電開始操作部、２３２…充電停止操作部、２３３…緊急停止操作部、１０００…コンピュータシステム、１００１…プロセッサ、１００２…メインメモリ、１００３…ストレージ、１００４…インタフェース。 1... Working machine, 2... Vehicle body, 2A... Frame, 2B... Housing member, 2C... Counterweight, 2D... Cover, 3... Traveling device, 3F... Front wheel, 3R... Rear wheel, 4... Working machine, 4A... Mast, 4B...Fork, 5...Battery pack, 5A...First battery pack, 5B...Second battery pack, 7...Work machine cylinder, 7A...Tilt cylinder, 7B...Lift cylinder, 8...Driving seat, 9...Steering wheel, 10 ...Connection section, 10A...First connection section, 10B...Second connection section, 11...Management controller, 11A...Remaining capacity acquisition section, 11B...Temperature acquisition section, 11C...Operation determination section, 11D...Threshold value storage section, 11E... Control stop section, 11F...Temperature control section, 12...Power controller, 13...Master controller, 14...Lock sensor, 15...Electricity line, 16...Detection line, 17...Power supply circuit, 20...Charging device, 20A...First charging Device, 20B... Second charging device, 21... Cable, 22... Plug, 23... Interface device, 23A... Operating device, 23B... Display device, 24... AC/DC conversion module, 25... Contactor, 26... Charging controller, 27 ...Commercial power supply, 30...Control circuit, 31...Positive line, 31A...Positive line, 31B...Positive line, 32...Negative line, 32A...Negative line, 32B...Negative line, 33...Signal line, 33A...Signal line, 33B ...Signal line, 34...Signal line, 34A...Signal line, 34B...Signal line, 35...Positive line, 35A...Fuse, 36...Negative line, 37...Positive line, 38...Negative line, 39...Positive line, 40... Negative line, 41...Charging contactor, 41A...Charging contactor, 41B...Charging contactor, 42...Discharging contactor, 43...Heater contactor, 44...Self-holding relay, 45...Positive line, 46...Negative line, 47A...Voltage sensor, 47B ... Voltage sensor, 48... Voltage sensor, 49... Current sensor, 50... Storage battery, 51... Power switch, 52... Operating lamp, 53... Voltage sensor, 54... Temperature sensor, 55... Heater (temperature control device), 56... Battery Controller, 57... Positive electrode line, 58... Negative electrode line, 61... Travel inverter, 62... Work equipment inverter, 63... Travel motor, 64... Work equipment motor, 71... Control line, 71A... Control line, 71B... Control line, 72 ...Control line, 73...Control line, 74...Control line, 75...Communication line, 76...Communication line, 80...Key switch, 100...Temperature control system, 231...Charging start operating section, 232...Charging stop operating section, 233 ...Emergency stop operation unit, 1000...Computer system, 1001...Processor, 1002...Main memory, 1003...Storage, 1004...Interface.

Claims (12)

  1. 　作業機械に搭載された蓄電池の残容量を取得する残容量取得部と、
    　前記蓄電池の温度を取得する温度取得部と、
    　前記残容量取得部により取得された前記残容量と前記温度取得部により取得された前記温度とに基づいて、前記蓄電池の温度を調整する温調装置を制御する温度制御部と、を備える、
    　温度制御システム。     a remaining capacity acquisition unit that acquires the remaining capacity of a storage battery installed in the working machine;
    a temperature acquisition unit that acquires the temperature of the storage battery;
    a temperature control unit that controls a temperature control device that adjusts the temperature of the storage battery based on the remaining capacity acquired by the remaining capacity acquisition unit and the temperature acquired by the temperature acquisition unit;
    Temperature control system.
  2. 　前記残容量取得部により取得された前記残容量が前記残容量に関する閾値以下のときに、前記温度制御部による前記温調装置の制御を停止させる制御停止部と、を備える、
    　請求項１に記載の温度制御システム。     a control stop unit that stops control of the temperature control device by the temperature control unit when the remaining capacity acquired by the remaining capacity acquisition unit is equal to or less than a threshold value regarding the remaining capacity;
    The temperature control system according to claim 1.
  3. 　前記閾値は、前記作業機械が稼働中と休止中とで異なる、
    　請求項２に記載の温度制御システム。     The threshold value is different when the work machine is in operation and when it is at rest.
    The temperature control system according to claim 2.
  4. 　前記作業機械が休止中の前記閾値は、前記作業機械が稼働中の前記閾値よりも大きい、
    　請求項３に記載の温度制御システム。     the threshold value when the work machine is at rest is greater than the threshold value when the work machine is in operation;
    The temperature control system according to claim 3.
  5. 　前記閾値を記憶する閾値記憶部を備える、
    　請求項２に記載の温度制御システム。     comprising a threshold storage unit that stores the threshold;
    The temperature control system according to claim 2.
  6. 　前記閾値記憶部には、複数の閾値が予め記憶されている、
    　請求項５に記載の温度制御システム。     A plurality of threshold values are stored in advance in the threshold storage unit,
    The temperature control system according to claim 5.
  7. 　前記作業機械が稼働中であるか休止中であるかを判定する稼働判定部を備える、
    　請求項３に記載の温度制御システム。     comprising an operation determination unit that determines whether the work machine is in operation or at rest;
    The temperature control system according to claim 3.
  8. 　前記温調装置は、前記蓄電池を加温するヒータを含み、
    　前記温度制御部は、前記温度取得部により取得された前記温度が所定値以下のときに、前記蓄電池の温度が所定値を上回るように、前記温調装置を制御する、
    　請求項３に記載の温度制御システム。     The temperature control device includes a heater that heats the storage battery,
    The temperature control unit controls the temperature control device so that the temperature of the storage battery exceeds a predetermined value when the temperature acquired by the temperature acquisition unit is below a predetermined value.
    The temperature control system according to claim 3.
  9. 　前記稼働中であることは、前記作業機械がキーオンされたこと及び前記蓄電池を充電する充電装置が充電動作中であることの少なくとも一方を含み、
    　前記休止中であることは、前記作業機械がキーオフされたこと及び前記充電装置が非充電動作中であることを含む、
    　請求項３に記載の温度制御システム。     The operating machine includes at least one of the working machine being turned on and the charging device that charges the storage battery being in a charging operation,
    The inactive state includes that the work machine is keyed off and that the charging device is in a non-charging operation.
    The temperature control system according to claim 3.
  10. 　前記稼働中であることは、前記作業機械の走行装置又は作業機が動作可能な状態であること、及び前記蓄電池を充電する充電装置が充電動作中であることの少なくとも一方を含み、
    　前記休止中であることは、前記作業機械の走行装置及び作業機が動作不可能な状態であること、及び前記充電装置が非充電動作中であることを含む、
    　請求項３に記載の温度制御システム。     The said being in operation includes at least one of the traveling device of the working machine or the working machine being in an operable state, and the charging device that charges the storage battery being in a charging operation,
    The said being at rest includes that the traveling device and the work implement of the working machine are in an inoperable state, and that the charging device is in a non-charging operation.
    The temperature control system according to claim 3.
  11. 　請求項１に記載の温度制御システムを備える、
    　作業機械。     comprising a temperature control system according to claim 1;
    working machine.
  12. 　作業機械に搭載された蓄電池の残容量を取得することと、
    　前記蓄電池の温度を取得することと、
    　前記残容量と前記温度とに基づいて、前記蓄電池の温度を調整する温調装置を制御することと、を含む、
    　温度制御方法。     Obtaining the remaining capacity of the storage battery installed in the working machine,
    Obtaining the temperature of the storage battery;
    controlling a temperature control device that adjusts the temperature of the storage battery based on the remaining capacity and the temperature;
    Temperature control method.
PCT/JP2023/031096 2022-08-31 2023-08-29 Temperature control system, work machine, and temperature control method WO2024048547A1 (en)

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