WO2022138506A1 - Battery pack and electrical apparatus system - Google Patents

Battery pack and electrical apparatus system Download PDF

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Publication number
WO2022138506A1
WO2022138506A1 PCT/JP2021/046844 JP2021046844W WO2022138506A1 WO 2022138506 A1 WO2022138506 A1 WO 2022138506A1 JP 2021046844 W JP2021046844 W JP 2021046844W WO 2022138506 A1 WO2022138506 A1 WO 2022138506A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery pack
control unit
electric device
failure
Prior art date
Application number
PCT/JP2021/046844
Other languages
French (fr)
Japanese (ja)
Inventor
聡史 山口
浩之 塙
Original Assignee
工機ホールディングス株式会社
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 工機ホールディングス株式会社 filed Critical 工機ホールディングス株式会社
Priority to JP2022571411A priority Critical patent/JPWO2022138506A1/ja
Publication of WO2022138506A1 publication Critical patent/WO2022138506A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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

Definitions

  • the present invention relates to a battery pack and an electrical equipment system including the battery pack and electrical equipment.
  • Patent Document 1 it is possible to determine which side the abnormality has occurred by notifying the abnormality of the electric device main body by the notification unit on the device main body side and notifying the abnormality of the battery pack by the notification unit on the battery pack side. Electrical equipment is listed.
  • Patent Document 1 does not describe that it is determined which side of the failure caused the abnormality that occurred when the device main body and the battery pack were connected. That is, it does not describe to identify the cause of the abnormality. Further, when one of the device main body and the battery pack fails, there is a possibility that the abnormality caused by the failure cannot be detected on the one side.
  • the present invention provides a battery pack that prohibits discharge based on information including failures and abnormalities from the device, provides an electric device system that can identify the cause of the abnormality and has improved reliability, or It is an object of the present invention to provide an electric device system that suppresses the continuation of use of the failed side even if the failed side cannot detect an abnormality.
  • One embodiment of the present invention is a battery pack that can be connected to an electric device, and is a battery cell, a battery-side control unit that controls the discharge of the battery cell, and a battery-side interface connected to the battery-side control unit. It has a battery-side interface configured to connect the electric device, and the battery-side control unit has the battery based on the electric device information input from the electric device to the battery-side interface. It is characterized in that it is configured to output a discharge prohibition signal that permanently prohibits discharge by the cell.
  • the battery-side control unit may be configured to output the discharge prohibition signal based on the electric device information when a failure or abnormality occurs in the electric device connected to the battery pack.
  • the battery-side control unit may be configured to output the discharge prohibition signal to the electric device to prohibit discharge by the cell via the battery-side interface.
  • the battery side control unit is configured to output the discharge prohibition signal to the switch unit to prohibit discharge by the battery cell. good.
  • the battery-side control unit may be configured to output the discharge prohibition signal when the electrical device information indicates that there is a failure or abnormality when connecting to a battery pack other than itself.
  • Another aspect of the present invention is an electric device system including an electric device and a battery pack that can be attached to and detached from the electric device.
  • the electric device is connected to a control unit on the device side and the battery pack.
  • the battery pack has a battery cell and a battery-side control unit that controls the discharge or charge of the battery cell, and has the device-side control unit and the battery-side control unit.
  • the battery-side control unit discharges or charges the battery cell when the electric device information input from the electric device indicates that there is a failure or abnormality when connecting to a battery pack other than itself. It may be configured to be prohibited.
  • the battery-side control unit may be configured to prohibit discharging or charging of the battery cell when the electric device information of a plurality of electric devices is stored.
  • the voltage of the battery pack changes suddenly, or If no current flows, it may be determined to be a failure.
  • the predetermined condition may include that the drive switch of the electric device is turned on or that the charging of the battery pack by the electric device is started.
  • the device-side control unit and the battery-side control unit are configured to be communicable with each other, and the cause of the failure may be determined due to the communication.
  • the cause of the failure may include at least one of a poor contact between the terminal of the electric device and the battery pack, and a failure of the circuit or wiring of the electric device or the battery pack.
  • the present invention to provide a battery pack that prohibits discharge based on information including a failure or abnormality from a device, and to provide an electric device system that can identify the cause of the abnormality and improve reliability.
  • FIG. 10 A flowchart showing a flow of determining whether or not a battery pack 10, 10A, a power tool 30, or a charger 50 (hereinafter, also referred to as “battery pack 10 or the like”) has a failure.
  • the present embodiment relates to the battery pack 10.
  • the present embodiment also relates to an electric device system including an electric device such as an electric tool 30 and a charger 50, and a battery pack 10 that can be attached to and detached from the electric device.
  • the battery pack 10 has a short-range wireless communication function such as Bluetooth (registered trademark), and can wirelessly communicate with a mobile device 80 such as a smartphone or a tablet terminal as shown in FIGS. 1 to 3.
  • An electric device management application (hereinafter referred to as “management application”) is installed in the mobile device 80.
  • the portable device 80 has a function of detecting the presence or absence of a failure of the battery pack 10, the power tool 30, and the charger 50 by wireless communication with the battery pack 10 and displaying (notifying the user).
  • FIG. 1 shows a state in which an abnormality occurs when the battery pack 10 and the power tool 30 are connected, and it is unknown which of the battery pack 10 and the power tool 30 is out of order.
  • the occurrence of the abnormality can be detected, but it cannot be detected which side is out of order (which side has the cause of the abnormality).
  • the signal transmission means or the power transmission means described later it is unknown whether the failure occurs in the battery pack 10 or the power tool 30.
  • the same can be said when an abnormality occurs when the battery pack 10 and the charger 50 are connected.
  • FIG. 2 shows that an abnormality occurred when the battery pack 10 and the power tool 30 were connected, and when the battery pack 10A and the power tool 30 were connected. Even if it is a type of abnormality that cannot be detected as to which side of the failure occurred, if the abnormality occurs regardless of which of the battery packs 10 and 10A is connected to the power tool 30 as shown in FIG. 2, the cause of the abnormality is Can be presumed to be a failure of the power tool 30. Although not shown, if an abnormality occurs regardless of which of the battery packs 10 and 10A is connected to the charger 50, the cause of the abnormality can be presumed to be a failure of the charger 50.
  • the battery packs 10 and 10A are the same type in the illustrated example, but may be different types as long as they can be connected to the power tool 30 and the charger 50.
  • FIG. 3 shows that an abnormality occurred when the battery pack 10 and the power tool 30 were connected, and when the battery pack 10 and the charger 50 were connected. Even if it is a type of abnormality that cannot be detected as to which side of the failure occurred, if an abnormality occurs regardless of whether the power tool 30 or the charger 50 is connected to the battery pack 10 as shown in FIG. 3, the abnormality occurs. It can be presumed that the cause of this is a failure of the battery pack 10.
  • FIG. 4 is a block diagram of an interconnected state of the battery pack 10 and the power tool 30.
  • FIG. 5 is a block diagram of the interconnected state of the battery pack 10 and the charger 50.
  • the positive terminals are connected to each other, the negative terminals are connected to each other, the T terminals are connected to each other, the LD terminals are connected to each other, the LS terminals are connected to each other, and the V terminals are connected to each other.
  • the terminals of the battery pack 10 and the charger 50 are connected to each other.
  • Each terminal of the battery pack 10 constitutes a battery-side interface (device main body connection portion).
  • Each terminal of the power tool 30 and the charger 50 constitutes a device-side interface (battery pack connection portion).
  • the battery pack 10 includes a display unit 11, an operation unit 12, a control unit 13 as a battery side control unit, a power supply unit 14, a cell voltage detection unit 15, a current detection unit 17, a cell temperature detection unit 18, a wireless communication unit 19, and a battery. It includes a cell 20, a FET (switching element) 21, a fuse 22, a switch unit 23, a resistor R1, and a thermistor R2.
  • the display unit 11 displays the remaining amount of the battery pack 10 and displays whether or not there is an abnormality (failure).
  • the operation unit 12 is a display switch for the user to instruct the control unit 13 to start displaying on the display unit 11.
  • the wireless communication unit 19 has a short-range wireless communication function such as Bluetooth (registered trademark), and wirelessly communicates with the mobile device 80 shown in FIGS. 1 to 3.
  • the control unit 13 controls the display by the display unit 11, the communication by the wireless communication unit 19, the on / off of the switch unit 23, and the discharge or charging of the battery cell 20.
  • the control unit 13 detects an abnormality such as high temperature, overdischarge, or overcurrent of the battery cell set 20, it outputs a stop signal (discharge prohibition signal) to the LD terminal.
  • the control unit 13 communicates (two-way communication) with the electrical device of the connection partner of the battery pack 10 via the T terminal.
  • the control unit 13 has a built-in non-volatile memory (storage unit) for storing a failure flag described later.
  • a switch unit 23, a fuse 22, a battery cell set 20, and a resistor R1 are connected in series between the positive terminal and the negative terminal.
  • the switch unit 23 is a switching element such as a FET or a relay.
  • the battery cell set 20 is formed by connecting a plurality of secondary battery cells in series.
  • the power supply unit 14 converts the voltage of the battery cell set 20 into the power supply voltage of the control unit 13 and supplies it to the control unit 13.
  • the cell voltage detection unit 15 detects the voltage of each cell of the battery cell set 20 and transmits it to the control unit 13.
  • the current detection unit 17 detects the current of the battery cell set 20 by the voltage of the resistor R1 and transmits it to the control unit 13.
  • the cell temperature detection unit 18 detects the temperature of the battery cell set 20 and transmits it to the control unit 13.
  • the thermistor R2 and FET 21 are connected in series between the LS terminal and the ground.
  • the thermistor R2 is provided in the vicinity of the battery cell set 20.
  • the gate of the FET 21 is connected to the V terminal.
  • the electric tool 30 includes a display unit 31, an operation unit 32, a control unit 33 as a device side control unit, a power supply unit 34, a battery voltage detection unit 35, a switch state detection unit 36, a current detection unit 37, a motor 40, and a FET (switching). Element) 41, switch 42, and resistor R3.
  • the FET 41 and the switch 42 are examples of a drive switch.
  • the display unit 31 displays the operation mode of the power tool 30 and the presence / absence of an abnormality (failure).
  • the operation unit 32 is a display switch for the user to instruct the control unit 33 to start displaying on the display unit 31.
  • the control unit 33 controls the display by the display unit 31 and the drive of the motor 40.
  • the control unit 33 receives the stop signal from the control unit 13 of the battery pack 10 via the LD terminal, the control unit 33 turns off the FET 41 and stops the motor 40.
  • the control unit 33 communicates (two-way communication) with the control unit 13 of the battery pack 10 via the T terminal.
  • the control unit 33 can receive the voltage of the thermistor R2 via the LS terminal and detect the temperature of the battery cell set 20 by transmitting an on signal to the gate of the FET 21 of the battery pack 10 via the V terminal.
  • the control unit 33 has a built-in non-volatile memory (storage unit) for storing a failure flag described later.
  • the failure flag and the unique number (unique information) of the battery pack stored in the control unit 33 are examples of the electric device information (or the battery pack information).
  • a switch 42, a motor 40, an FET 41, and a resistor R3 are connected in series between the positive terminal and the negative terminal.
  • the switch 42 is, for example, a trigger switch that allows the user to switch between energization and stop of the motor 40.
  • the power supply unit 34 converts the voltage of the battery cell set 20 input via the positive terminal into the power supply voltage of the control unit 33 and supplies it to the control unit 33.
  • the battery voltage detection unit 35 detects the voltage of the positive terminal and transmits it to the control unit 33.
  • the switch state detection unit 36 detects the on / off of the switch 42 and transmits it to the control unit 33.
  • the current detection unit 37 detects the current of the motor 40 by the voltage of the resistor R3 and transmits it to the control unit 33.
  • the charger 50 includes a display unit 51, an operation unit 52, a control unit 53, a battery voltage detection unit 55, a current detection unit 57, a power supply circuit (charging circuit) 60, and a resistor R4.
  • the charger 50 is connected to an external AC power source 70 and charges the battery pack 10 with the power of the AC power source 70.
  • the display unit 51 displays the progress of charging and the presence / absence of an abnormality (failure).
  • the operation unit 52 is a display switch for the user to instruct the control unit 53 to start displaying on the display unit 51.
  • the control unit 53 controls the display by the display unit 51 and controls the charging of the battery pack 10 by controlling the power supply circuit 60.
  • the control unit 53 receives a stop signal (charge prohibition signal) from the control unit 13 of the battery pack 10 via the LD terminal, the control unit 53 turns off the power supply circuit 60 and stops charging the battery pack 10.
  • the control unit 53 communicates (two-way communication) with the control unit 13 of the battery pack 10 via the T terminal.
  • the control unit 53 can receive the voltage of the thermistor R2 via the LS terminal and detect the temperature of the battery cell set 20 by transmitting an on signal to the gate of the FET 21 of the battery pack 10 via the V terminal.
  • the control unit 53 has a built-in non-volatile memory (storage unit) for storing a failure flag described later.
  • the failure flag and the unique number of the battery pack stored in the control unit 53 are examples of electrical device information (or battery pack information).
  • a power supply circuit 60 and a resistor R4 are connected in series between the positive terminal and the negative terminal.
  • the battery voltage detection unit 55 detects the voltage of the positive terminal and transmits it to the control unit 53.
  • the current detection unit 57 detects the current (charging current) of the power supply circuit 60 by the voltage of the resistor R4 and transmits it to the control unit 53.
  • the signal transmission means is a component related to communication via the T terminal and signal transmission via the LD terminal, the LS terminal, and the V terminal.
  • the power transmission means is a component related to power transmission from the battery cell set 20 of the battery pack 10 shown in FIG. 4 to the motor 40 of the electric tool 30, or the battery pack 10 from the power supply circuit 60 of the charger 50 shown in FIG. This is a component related to power transmission to the battery cell set 20 of the above.
  • Examples of failures of signal transmission means and power transmission means are as follows on the battery pack 10 side (hereinafter also referred to as “battery side”) or the power tool 30 and charger 50 side (hereinafter also referred to as “equipment side”). There is a defect.
  • Battery side battery pack 10 side
  • equipment side power tool 30 and charger 50 side
  • Terminal contact failure terminal deformation, foreign matter adhesion, positioning failure
  • Circuit failure electronic component failure / mounting failure
  • Wiring failure wire / board pattern disconnection, short circuit, etc.
  • the signal transmission means fails, for example, the following phenomenon (abnormality) occurs, and the failure of the signal transmission means is detected. -There is no response to the request in bidirectional communication with the device side and battery side. -The resistance value of the thermistor R2 connected to the battery pack 10 cannot be detected. -There is no response to the request in bidirectional communication with the battery side and device side. -Current continues to flow even though a stop signal is output to the device side.
  • the device side may not be able to detect the abnormality. be.
  • the cause of the abnormality is a failure on the battery side, the abnormality may not be detected on the battery side.
  • the side with the failure that is the cause of the abnormality may not be able to detect the abnormality. Then, there is a risk that the product can be used continuously in a state of failure. There is a way to disable both of them in order to prevent this, but that causes the inconvenience of not being able to use the side that has not failed. Compared to users who own a plurality of battery packs 10, there are few users who have a plurality of power tools 30 and chargers 50 of the same type. A large impact.
  • One of the objects of the present embodiment is to continue the use of the side with a failure without disabling the side without the failure even if the side with the failure causing the abnormality cannot detect the abnormality. Is to prevent.
  • the failure flag is information for determining (constraining) the failure type, for example, which terminal the transmission means corresponds to, and information on the symptom (for each abnormality detection condition) (LD terminal no response, T terminal). No response, voltage drop, chattering, etc.) can be included. This makes it possible to identify the location of the failure.
  • the unique number (unique information) and the failure flag of the electric device stored in the control unit 13 are examples of the electric device information.
  • a stop signal (discharge prohibition) is sent to the LD terminal. Signal or charge prohibition signal) is output.
  • a failure is displayed when the display switch is pressed.
  • the battery side cannot be used even if it is connected to another electric device / failure display, and the device side can be used if it is connected to another battery pack / normal display. The user can determine that the failure is on the battery side.
  • the device side can not be used even if it is connected to another battery pack / failure display, and the battery side can be used if it is connected to another electric device / normal display, so the user Can be determined to be a device failure.
  • the display on the display unit of the electric device or the battery pack can urge the user to prohibit the use of the device or the battery (electric tool 30, charger 50, battery pack 10) in which the abnormality has occurred.
  • the control unit 13 of the battery pack 10 determines that the failure is on the battery side or the device side, the control unit 13 notifies the mobile device 80 (smart device) of the failure by wireless communication by the wireless communication unit 19.
  • the management application of the mobile device 80 displays a failure.
  • the portable device 80 reads out the memory on the battery side and the device side by wireless communication, and if the failure flag is stored in the memory on the battery side together with the unique numbers of a plurality of electric devices, it is determined that the failure is on the battery side. However, if the failure flag is stored in the memory of the device side together with the unique numbers of multiple battery packs, it is determined that the device has a failure and the failure is displayed.
  • the user can also determine whether the failure is on the battery side or the device side by the display of the portable device 80.
  • the display of the portable device 80 can urge the user to prohibit the use of the device or battery (power tool 30, charger 50, battery pack 10) in which the abnormality has occurred.
  • the battery pack 10, the power tool 30, or the charger 50 which has been disabled due to a failure, can be repaired by a repair / maintenance service provider, the failure flag is cleared, and the unusable state can be released. If it is determined to be out of order, it will be permanently unusable unless the faulty part is repaired. That is, even if the user re-operates the trigger switch of the power tool 30, reconnects the battery pack 10 to the connection target, or connects / disconnects the power supply of the charger 50, the unusable state is maintained. ..
  • FIG. 6 is a flowchart showing a flow of determining whether or not the battery pack 10 or the like has its own failure.
  • the control unit 13 of the battery pack 10, the control unit 33 of the power tool 30, or the control unit 53 of the charger 50 (hereinafter, also referred to as “control unit 13 and the like”) reads out the contents of its own memory (S1).
  • the failure flag abnormal flag
  • YES in S2 a plurality of combinations in its own memory
  • the subsequent operation may be changed (selected) according to the type of failure / abnormality without disabling itself.
  • system stoppage, notification by a display means, and notification to an information terminal can be performed according to the type of abnormality / failure.
  • FIG. 7 is a flowchart showing a flow in which the battery pack 10 and the like determine whether or not there is a failure of the connection partner.
  • the control unit 13 and the like confirm whether or not the other party's device is connected (S5). When the other party's device is not connected (NO in S5), the control unit 13 and the like determine that the other party's device has no failure (S6). When the other device is connected (YES in S5), the control unit 13 or the like reads the memory contents of the other device if the memory content reading process of the other device has not been executed (YES in S7). ).
  • the control unit 13 or the like stores the failure flag in the memory of the other device together with a plurality of unique numbers. If so, it is determined that the other party's device has a failure (S10). At this time, the control unit 13 of the battery pack 10 outputs a signal for prohibiting discharge by the battery cell set 20 (or a charge prohibition signal for prohibiting charging of the battery cell set 20) to the LD terminal. Alternatively, the control unit 13 outputs an off signal to the switch unit 23 to prohibit charging / discharging of the battery cell set 20. It should be noted that the present invention is not limited to prohibiting discharging and charging, and the subsequent operation may be changed (selected) according to the type of failure / abnormality as in FIG.
  • FIG. 8 is a flowchart showing a flow in which the battery pack 10 or the like detects the presence or absence of an abnormality in the signal transmission means.
  • the control unit 13 or the like detects the abnormality A when there is no expected response or state change as the transmission result of the signal A (YES in S12) (S13).
  • the signal A is, for example, a communication request signal in bidirectional communication transmitted from the T terminal by the control unit 13, a stop signal output from the LD terminal by the control unit 13, and an on signal output by the control units 33 and 53 to the V terminal. be.
  • the abnormality A is, for example, that there is no response to the communication request signal in bidirectional communication, the current continues to flow even though the stop signal is output, and the resistance value of the thermistor R2 cannot be detected.
  • the control unit 13 or the like detects an input abnormality of the signal B (YES in S14), the control unit 13 or the like detects the abnormality B (S15).
  • the signal B is, for example, a temperature signal input from the LS terminal to the control units 33 and 53.
  • the abnormality B is, for example, that the resistance value of the thermistor R2 cannot be detected.
  • FIG. 9 is a flowchart showing a flow in which the battery pack 10 or the like detects the presence or absence of an abnormality in the power transmission means.
  • the control unit 13 or the like detects an abnormal change in the battery voltage (YES in S21)
  • the control unit 13 or the like detects the abnormality C (S22).
  • the abnormal change and abnormality C of the battery voltage are, for example, an abnormal sudden drop or sudden rise in the battery voltage, or an intermittent sudden drop or sudden rise.
  • the control unit 13 and the like detect the abnormality D when the state is not the expected state in the operating state D (YES in S24).
  • the operating state D is, for example, a state in which the switch 42 and the FET 41 are turned on in the power tool 30, or a state in which the power supply circuit 60 is turned on in the charger 50.
  • the abnormality D is, for example, that the discharge current or the charge current cannot be detected in the operating state D.
  • FIG. 10 is a flowchart showing a flow of storing a failure flag when the battery pack 10 or the like detects an abnormality in the signal transmission means or the power transmission means.
  • the control unit 13 or the like detects an abnormality in the signal transmission means or the power transmission means (YES in S31), and the failure flag (abnormal flag) storage process is not executed (YES in S32), the control unit 13 or the like has an abnormality in its own memory.
  • the type and the unique number of the connection partner are stored (S33), and the abnormal type and its own unique number are written in the memory of the other device by communication (S34).
  • FIG. 11 is a flowchart of an operation related to abnormality notification in the electrical equipment system of the present embodiment.
  • an abnormality such as the above-mentioned abnormalities A to D
  • the control unit 13 or the like performs a system stop processing (stopping discharge or charging) (S42).
  • the control unit 13 or the like performs an abnormality display process (S45) when there is an abnormality or failure to be displayed (YES in S44), and the abnormality or failure to be displayed. If there is no (NO in S44), normal status display processing is performed (S46).
  • the control unit 13 is in a communication connection state between the battery pack 10 and the mobile device 80 (when the management application of the mobile device 80 is activated and the mobile device 80 is within the wireless communication range) (YES in S47). If there is an abnormality or failure to be notified (YES in S48), and if the abnormality notification process has not been executed (YES in S49), the abnormality notification process is performed for the mobile device 80 (S50).
  • the mobile device 80 notifies the user of an abnormality by displaying a screen or the like. By this abnormality notification, it is possible to urge the user to prohibit the use of the device (power tool 30, charger 50, battery pack 10) in which the abnormality has occurred.
  • the mobile device 80 stores the abnormality notified in S50, and even if it is out of the communicable range with the battery pack 10, the abnormality of each device is made according to the operation requested by the user by the function of the management application. You can display the presence or absence of.
  • the failure flag and the unique number of the other party's device are stored when an abnormality occurs on both the battery side and the device side, even if it is a type of abnormality that cannot be detected due to the failure on either side. , It is possible to estimate which side is out of order depending on whether or not the failure flag is stored together with the unique numbers (unique information) of a plurality of other party devices, and the reliability can be improved. Further, even if the side having the failure causing the abnormality cannot detect the abnormality, the failure can be estimated and the continuation of use of the failed side can be suppressed. This eliminates the need to disable both when an abnormality of a type that cannot detect which side of the failure caused the abnormality occurs, and enhances convenience. That is, it is possible to suppress a decrease in convenience due to disabling the use up to the side that does not have a failure.
  • the battery pack 10, the power tool 30, and the charger 50 are configured so as not to operate when it is determined that the other party's device is out of order, they are suppressed from operating when connected to the failed device. Increased reliability.
  • the power tool 30 is not limited to the impact driver shown in FIGS. 1 to 3, and may be another type.
  • the electric device of the present invention is not limited to the electric tool 30 and the charger 50, and may be an electric work machine such as a cleaner or a blower, or may be another type of electric device such as a lighting device.
  • Charger electrical equipment

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Manufacturing & Machinery (AREA)
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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Provided is a battery pack in which discharge is prohibited on the basis of information including a failure or an abnormality from an apparatus. A battery pack 10 comprises: a battery cell set 20; a control unit 13 for controlling the discharge of the battery cell set 20; and a terminal configured to be connectable to a power tool (electrical apparatus) 30. The control unit 13 is configured to output a discharge prohibition signal for prohibiting the discharge by the battery cell set 20 on the basis of electrical apparatus information input from the power tool 30 through the terminal. The electrical apparatus information includes a unique number and a failure flag of an opposite-party apparatus at the occurrence of an abnormality.

Description

電池パック及び電気機器システムBattery pack and electrical equipment system
本発明は、電池パック、並びに電池パック及び電気機器を備えた電気機器システムに関する。 The present invention relates to a battery pack and an electrical equipment system including the battery pack and electrical equipment.
特許文献１には、電気機器本体の異常は機器本体側の報知部で報知し、電池パックの異常は電池パック側の報知部で報知することで、どちら側に異常が発生したかを判断可能な電気機器が記載されている。 In Patent Document 1, it is possible to determine which side the abnormality has occurred by notifying the abnormality of the electric device main body by the notification unit on the device main body side and notifying the abnormality of the battery pack by the notification unit on the battery pack side. Electrical equipment is listed.
国際公開第２０１９／０３１２７３号International Publication No. 2019/031273
特許文献１には、機器本体及び電池パックの接続時に発生した異常が、どちら側の故障に起因して発生したものかを判断することは記載されていない。すなわち、異常の原因を特定することまでは記載されていない。また、機器本体と電池パックの一方が故障した場合に、その故障に起因して発生する異常を当該一方側で検出することができない可能性もある。 Patent Document 1 does not describe that it is determined which side of the failure caused the abnormality that occurred when the device main body and the battery pack were connected. That is, it does not describe to identify the cause of the abnormality. Further, when one of the device main body and the battery pack fails, there is a possibility that the abnormality caused by the failure cannot be detected on the one side.
本発明は、機器からの故障や異常を含む情報に基づいて放電を禁止する電池パックを提供すること、異常の原因を特定可能として信頼性を向上させた電気機器システムを提供すること、又は、故障した側が異常を検出できなくても故障した側の使用の継続を抑制する電気機器システムを提供することを目的とする。 The present invention provides a battery pack that prohibits discharge based on information including failures and abnormalities from the device, provides an electric device system that can identify the cause of the abnormality and has improved reliability, or It is an object of the present invention to provide an electric device system that suppresses the continuation of use of the failed side even if the failed side cannot detect an abnormality.
本発明のある態様は、電気機器に接続可能な電池パックであって、電池セルと、前記電池セルの放電を制御する電池側制御部と、前記電池側制御部に接続された電池側インタフェースであって、前記電気機器を接続可能に構成された電池側インタフェースと、を有し、前記電池側制御部は、前記電気機器から前記電池側インタフェースに入力される電気機器情報に基づいて、前記電池セルによる放電を恒久的に禁止する放電禁止信号を出力するよう構成された、ことを特徴とする。 One embodiment of the present invention is a battery pack that can be connected to an electric device, and is a battery cell, a battery-side control unit that controls the discharge of the battery cell, and a battery-side interface connected to the battery-side control unit. It has a battery-side interface configured to connect the electric device, and the battery-side control unit has the battery based on the electric device information input from the electric device to the battery-side interface. It is characterized in that it is configured to output a discharge prohibition signal that permanently prohibits discharge by the cell.
前記電池側制御部は、前記電池パックに接続された前記電気機器に故障又は異常が生じた場合に、前記電気機器情報に基づいて、前記放電禁止信号を出力するよう構成されてもよい。 The battery-side control unit may be configured to output the discharge prohibition signal based on the electric device information when a failure or abnormality occurs in the electric device connected to the battery pack.
前記電池側制御部は、前記電池側インタフェースを介して、前記電気機器に前記放電禁止信号を出力して前記セルによる放電を禁止するよう構成されてもよい。 The battery-side control unit may be configured to output the discharge prohibition signal to the electric device to prohibit discharge by the cell via the battery-side interface.
前記電池パックは、前記電池セルに接続されたスイッチ部を有し、前記電池側制御部は、前記スイッチ部に前記放電禁止信号を出力して前記電池セルによる放電を禁止するよう構成されてもよい。 Even if the battery pack has a switch unit connected to the battery cell, and the battery side control unit is configured to output the discharge prohibition signal to the switch unit to prohibit discharge by the battery cell. good.
前記電池側制御部は、前記電気機器情報が、自身とは別の電池パックとの接続時に故障又は異常があったことを示す場合に、前記放電禁止信号を出力するよう構成されてもよい。 The battery-side control unit may be configured to output the discharge prohibition signal when the electrical device information indicates that there is a failure or abnormality when connecting to a battery pack other than itself.
本発明の別の態様は、電気機器と、前記電気機器に着脱可能な電池パックと、を備えた電気機器システムであって、前記電気機器は、機器側制御部と、前記電池パックが接続される電池パック接続部と、を有し、前記電池パックは、電池セルと、前記電池セルの放電又は充電を制御する電池側制御部と、を有し、前記機器側制御部と前記電池側制御部の少なくとも一方により、前記電気機器と前記電池パックの一方に故障の原因があると判断されると、前記一方の使用を恒久的に禁止又は使用禁止を促すよう異常報知する、ことを特徴とする。 Another aspect of the present invention is an electric device system including an electric device and a battery pack that can be attached to and detached from the electric device. The electric device is connected to a control unit on the device side and the battery pack. The battery pack has a battery cell and a battery-side control unit that controls the discharge or charge of the battery cell, and has the device-side control unit and the battery-side control unit. When it is determined by at least one of the units that one of the electric device and the battery pack has a cause of failure, the feature is that the use of the one is permanently prohibited or an abnormality is notified to urge the prohibition of use. do.
前記電池側制御部は、前記電気機器から入力される電気機器情報が、自身とは別の電池パックとの接続時に故障又は異常があったことを示す場合に、前記電池セルの放電又は充電を禁止するよう構成してもよい。 The battery-side control unit discharges or charges the battery cell when the electric device information input from the electric device indicates that there is a failure or abnormality when connecting to a battery pack other than itself. It may be configured to be prohibited.
前記電池側制御部は、複数の電気機器の電気機器情報を記憶している場合に、前記電池セルの放電又は充電を禁止するよう構成してもよい。 The battery-side control unit may be configured to prohibit discharging or charging of the battery cell when the electric device information of a plurality of electric devices is stored.
前記機器側制御部と前記電池側制御部の少なくとも一方は、前記電池パックを前記電気機器に接続して所定の条件を満たした状態において、前記電池パックの電圧が急激に変化した場合、又は、電流が流れない場合に故障と判断してもよい。 When at least one of the device-side control unit and the battery-side control unit is connected to the electric device and satisfies a predetermined condition, the voltage of the battery pack changes suddenly, or If no current flows, it may be determined to be a failure.
前記所定の条件は、前記電気機器の駆動スイッチがターンオンされたこと、又は、前記電気機器による前記電池パックの充電が開始されたことを含んでもよい。 The predetermined condition may include that the drive switch of the electric device is turned on or that the charging of the battery pack by the electric device is started.
前記機器側制御部と前記電池側制御部は互いに通信可能に構成され、前記故障の原因は、前記通信に起因して判断されてもよい。 The device-side control unit and the battery-side control unit are configured to be communicable with each other, and the cause of the failure may be determined due to the communication.
前記故障の原因は、前記電気機器と前記電池パックの端子同士の接触不良、及び、前記電気機器又は前記電池パックの回路又は配線の不良、の少なくともいずれかを含んでもよい。 The cause of the failure may include at least one of a poor contact between the terminal of the electric device and the battery pack, and a failure of the circuit or wiring of the electric device or the battery pack.
なお、以上の構成要素の任意の組合せ、本発明の表現を方法などの間で変換したものもまた、本発明の態様として有効である。 It should be noted that any combination of the above components, a conversion of the expression of the present invention between methods, and the like are also effective as aspects of the present invention.
本発明によれば、機器からの故障や異常を含む情報に基づいて放電を禁止する電池パックを提供すること、異常の原因を特定可能として信頼性を向上させた電気機器システムを提供すること、又は、故障した側が異常を検出できなくても故障した側の使用の継続を抑制する電気機器システムを提供することができる。 According to the present invention, to provide a battery pack that prohibits discharge based on information including a failure or abnormality from a device, and to provide an electric device system that can identify the cause of the abnormality and improve reliability. Alternatively, it is possible to provide an electric device system that suppresses the continuation of use of the failed side even if the failed side cannot detect the abnormality.
本発明の実施の形態に係る電気機器システムの概略構成図であって、電池パック１０及び電動工具３０を接続した場合に異常が発生したことを示す図。It is a schematic block diagram of the electric equipment system which concerns on embodiment of this invention, and is the figure which shows that the abnormality occurred when the battery pack 10 and the power tool 30 were connected. 本発明の実施の形態に係る電気機器システムの概略構成図であって、電池パック１０及び電動工具３０を接続した場合、並びに電池パック１０Ａ及び電動工具３０を接続した場合に異常が発生したことを示す図。It is a schematic block diagram of an electric device system according to an embodiment of the present invention, and it is found that an abnormality has occurred when the battery pack 10 and the power tool 30 are connected, and when the battery pack 10A and the power tool 30 are connected. The figure which shows. 本発明の実施の形態に係る電気機器システムの概略構成図であって、電池パック１０及び電動工具３０を接続した場合、並びに電池パック１０及び充電器５０を接続した場合に異常が発生したことを示す図。It is a schematic block diagram of the electric equipment system according to the embodiment of the present invention, and it is found that an abnormality has occurred when the battery pack 10 and the power tool 30 are connected, and when the battery pack 10 and the charger 50 are connected. The figure which shows. 本発明の実施の形態に係る電気機器システムの概略ブロック図であって、電池パック１０及び電動工具３０の相互接続状態のブロック図。It is a schematic block diagram of the electric equipment system which concerns on embodiment of this invention, and is the block diagram of the interconnection state of the battery pack 10 and the electric tool 30. 本発明の実施の形態に係る電気機器システムの概略ブロック図であって、電池パック１０及び充電器５０の相互接続状態のブロック図。It is a schematic block diagram of the electric equipment system which concerns on embodiment of this invention, and is the block diagram of the interconnection state of a battery pack 10 and a charger 50. 電池パック１０、１０Ａ、電動工具３０又は充電器５０（以下「電池パック１０等」とも表記）が自身の故障有無を判断する流れを示すフローチャート。A flowchart showing a flow of determining whether or not a battery pack 10, 10A, a power tool 30, or a charger 50 (hereinafter, also referred to as “battery pack 10 or the like”) has a failure. 電池パック１０等が接続相手の故障有無を判断する流れを示すフローチャート。A flowchart showing a flow in which a battery pack 10 or the like determines whether or not a connection partner has a failure. 電池パック１０等が信号伝達手段の異常有無を検出する流れを示すフローチャート。The flowchart which shows the flow which the battery pack 10 or the like detects the presence or absence of abnormality of a signal transmission means. 電池パック１０等が電力伝達手段の異常有無を検出する流れを示すフローチャート。The flowchart which shows the flow which the battery pack 10 or the like detects the presence or absence of abnormality of the power transmission means. 電池パック１０等が信号伝達手段又は電力伝達手段の異常を検出した場合に故障フラグを記憶する流れを示すフローチャート。A flowchart showing a flow of storing a failure flag when a battery pack 10 or the like detects an abnormality in a signal transmission means or a power transmission means. 本発明の実施の形態に係る電気機器システムにおける、異常報知に係る動作のフローチャート。The flowchart of the operation which concerns on abnormality notification in the electric equipment system which concerns on embodiment of this invention.
以下、図面を参照しながら本発明の好適な実施の形態を説明する。各図面に示される同一または同等の構成要素、部材等には同一の符号を付し、適宜重複した説明は省略する。実施の形態は、発明を限定するものではなく例示である。実施の形態に記述されるすべての特徴やその組み合わせは、必ずしも発明の本質的なものであるとは限らない。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The same or equivalent components, members, etc. shown in the drawings are designated by the same reference numerals, and duplicate description thereof will be omitted as appropriate. The embodiment is not limited to the invention but is an example. Not all features and combinations thereof described in the embodiments are essential to the invention.
本実施の形態は、電池パック１０に関する。本実施の形態は、また、電動工具３０や充電器５０等の電気機器と、前記電気機器に着脱可能な電池パック１０と、を備えた電気機器システムに関する。電池パック１０は、Bluetooth（登録商標）等の近距離無線通信機能を有し、図１～図３に示すように、スマートフォンやタブレット端末等の携帯機器８０と無線通信が可能である。携帯機器８０には、電気機器の管理アプリケーション（以下「管理アプリ」）がインストールされている。携帯機器８０は、電池パック１０や電動工具３０、充電器５０の故障の有無を、電池パック１０との無線通信により検出し、表示（ユーザに報知）する機能を有する。 The present embodiment relates to the battery pack 10. The present embodiment also relates to an electric device system including an electric device such as an electric tool 30 and a charger 50, and a battery pack 10 that can be attached to and detached from the electric device. The battery pack 10 has a short-range wireless communication function such as Bluetooth (registered trademark), and can wirelessly communicate with a mobile device 80 such as a smartphone or a tablet terminal as shown in FIGS. 1 to 3. An electric device management application (hereinafter referred to as “management application”) is installed in the mobile device 80. The portable device 80 has a function of detecting the presence or absence of a failure of the battery pack 10, the power tool 30, and the charger 50 by wireless communication with the battery pack 10 and displaying (notifying the user).
図１は、電池パック１０及び電動工具３０を接続した場合に異常が発生し、電池パック１０及び電動工具３０のどちらが故障しているかが分からない状態を示す。異常の種類によっては、異常の発生は検出できても、どちら側が故障しているのか（どちら側に異常の原因があるのか）までは検出できない。例えば、後述する信号伝達手段や電力伝達手段の故障の場合、故障が電池パック１０及び電動工具３０のどちらに発生しているのかが分からない。図示は省略したが、電池パック１０及び充電器５０を接続して異常が発生した場合にも同様のことがいえる。 FIG. 1 shows a state in which an abnormality occurs when the battery pack 10 and the power tool 30 are connected, and it is unknown which of the battery pack 10 and the power tool 30 is out of order. Depending on the type of abnormality, the occurrence of the abnormality can be detected, but it cannot be detected which side is out of order (which side has the cause of the abnormality). For example, in the case of a failure of the signal transmission means or the power transmission means described later, it is unknown whether the failure occurs in the battery pack 10 or the power tool 30. Although not shown, the same can be said when an abnormality occurs when the battery pack 10 and the charger 50 are connected.
図２は、電池パック１０及び電動工具３０を接続した場合、並びに電池パック１０Ａ及び電動工具３０を接続した場合に異常が発生したことを示す。どちら側の故障で発生した異常かを検出できない種類の異常であっても、図２のように電動工具３０に電池パック１０、１０Ａのいずれを接続しても異常が発生した場合、異常の原因は電動工具３０の故障と推定できる。図示は省略したが、充電器５０に電池パック１０、１０Ａのいずれを接続しても異常が発生した場合、異常の原因は充電器５０の故障と推定できる。電池パック１０、１０Ａは、図示の例では同種であるが、電動工具３０及び充電器５０に接続可能であれば異種であってもよい。 FIG. 2 shows that an abnormality occurred when the battery pack 10 and the power tool 30 were connected, and when the battery pack 10A and the power tool 30 were connected. Even if it is a type of abnormality that cannot be detected as to which side of the failure occurred, if the abnormality occurs regardless of which of the battery packs 10 and 10A is connected to the power tool 30 as shown in FIG. 2, the cause of the abnormality is Can be presumed to be a failure of the power tool 30. Although not shown, if an abnormality occurs regardless of which of the battery packs 10 and 10A is connected to the charger 50, the cause of the abnormality can be presumed to be a failure of the charger 50. The battery packs 10 and 10A are the same type in the illustrated example, but may be different types as long as they can be connected to the power tool 30 and the charger 50.
図３は、電池パック１０及び電動工具３０を接続した場合、並びに電池パック１０及び充電器５０を接続した場合に異常が発生したことを示す。どちら側の故障で発生した異常かを検出できない種類の異常であっても、図３のように電池パック１０に電動工具３０及び充電器５０のいずれを接続しても異常が発生した場合、異常の原因は電池パック１０の故障と推定できる。 FIG. 3 shows that an abnormality occurred when the battery pack 10 and the power tool 30 were connected, and when the battery pack 10 and the charger 50 were connected. Even if it is a type of abnormality that cannot be detected as to which side of the failure occurred, if an abnormality occurs regardless of whether the power tool 30 or the charger 50 is connected to the battery pack 10 as shown in FIG. 3, the abnormality occurs. It can be presumed that the cause of this is a failure of the battery pack 10.
図４は、電池パック１０と電動工具３０の相互接続状態のブロック図である。図５は、電池パック１０と充電器５０の相互接続状態のブロック図である。電池パック１０及び電動工具３０は、プラス端子同士、マイナス端子同士、Ｔ端子同士、ＬＤ端子同士、ＬＳ端子同士、及びＶ端子同士が互いに接続される。電池パック１０及び充電器５０も同様に各端子同士が接続される。電池パック１０の各端子は、電池側インタフェース（機器本体接続部）を構成する。電動工具３０及び充電器５０の各端子は、機器側インタフェース（電池パック接続部）を構成する。 FIG. 4 is a block diagram of an interconnected state of the battery pack 10 and the power tool 30. FIG. 5 is a block diagram of the interconnected state of the battery pack 10 and the charger 50. In the battery pack 10 and the power tool 30, the positive terminals are connected to each other, the negative terminals are connected to each other, the T terminals are connected to each other, the LD terminals are connected to each other, the LS terminals are connected to each other, and the V terminals are connected to each other. Similarly, the terminals of the battery pack 10 and the charger 50 are connected to each other. Each terminal of the battery pack 10 constitutes a battery-side interface (device main body connection portion). Each terminal of the power tool 30 and the charger 50 constitutes a device-side interface (battery pack connection portion).
電池パック１０は、表示部１１、操作部１２、電池側制御部としての制御部１３、電源部１４、セル電圧検出部１５、電流検出部１７、セル温度検出部１８、無線通信部１９、電池セル２０、ＦＥＴ（スイッチング素子）２１、ヒューズ２２、スイッチ部２３、抵抗Ｒ１、サーミスタＲ２を含む。 The battery pack 10 includes a display unit 11, an operation unit 12, a control unit 13 as a battery side control unit, a power supply unit 14, a cell voltage detection unit 15, a current detection unit 17, a cell temperature detection unit 18, a wireless communication unit 19, and a battery. It includes a cell 20, a FET (switching element) 21, a fuse 22, a switch unit 23, a resistor R1, and a thermistor R2.
表示部１１は、電池パック１０の残量表示や異常（故障）有無の表示を行う。操作部１２は、表示部１１への表示開始をユーザが制御部１３に指示するための表示スイッチである。無線通信部１９は、Bluetooth（登録商標）等の近距離無線通信機能を有し、図１～図３に示す携帯機器８０と無線通信する。 The display unit 11 displays the remaining amount of the battery pack 10 and displays whether or not there is an abnormality (failure). The operation unit 12 is a display switch for the user to instruct the control unit 13 to start displaying on the display unit 11. The wireless communication unit 19 has a short-range wireless communication function such as Bluetooth (registered trademark), and wirelessly communicates with the mobile device 80 shown in FIGS. 1 to 3.
制御部１３は、表示部１１による表示、無線通信部１９による通信、スイッチ部２３のオンオフ、及び電池セル２０の放電又は充電を制御する。制御部１３は、電池セル組２０の高温、過放電、過電流等の異常を検出すると、停止信号（放電禁止信号）をＬＤ端子に出力する。制御部１３は、Ｔ端子を介して電池パック１０の接続相手方の電気機器と通信（双方向通信）する。制御部１３は、後述の故障フラグを記憶するための不揮発性メモリ（記憶部）を内蔵する。 The control unit 13 controls the display by the display unit 11, the communication by the wireless communication unit 19, the on / off of the switch unit 23, and the discharge or charging of the battery cell 20. When the control unit 13 detects an abnormality such as high temperature, overdischarge, or overcurrent of the battery cell set 20, it outputs a stop signal (discharge prohibition signal) to the LD terminal. The control unit 13 communicates (two-way communication) with the electrical device of the connection partner of the battery pack 10 via the T terminal. The control unit 13 has a built-in non-volatile memory (storage unit) for storing a failure flag described later.
プラス端子とマイナス端子との間に、スイッチ部２３、ヒューズ２２、電池セル組２０及び抵抗Ｒ１が直列接続される。スイッチ部２３は、ＦＥＴ等のスイッチング素子あるいはリレーである。電池セル組２０は、複数の二次電池セルを直列接続したものである。電源部１４は、電池セル組２０の電圧を制御部１３の電源電圧に変換し、制御部１３に供給する。セル電圧検出部１５は、電池セル組２０の各セルの電圧を検出し、制御部１３に送信する。電流検出部１７は、抵抗Ｒ１の電圧により電池セル組２０の電流を検出し、制御部１３に送信する。セル温度検出部１８は、電池セル組２０の温度を検出し、制御部１３に送信する。 A switch unit 23, a fuse 22, a battery cell set 20, and a resistor R1 are connected in series between the positive terminal and the negative terminal. The switch unit 23 is a switching element such as a FET or a relay. The battery cell set 20 is formed by connecting a plurality of secondary battery cells in series. The power supply unit 14 converts the voltage of the battery cell set 20 into the power supply voltage of the control unit 13 and supplies it to the control unit 13. The cell voltage detection unit 15 detects the voltage of each cell of the battery cell set 20 and transmits it to the control unit 13. The current detection unit 17 detects the current of the battery cell set 20 by the voltage of the resistor R1 and transmits it to the control unit 13. The cell temperature detection unit 18 detects the temperature of the battery cell set 20 and transmits it to the control unit 13.
ＬＳ端子とグランドとの間に、サーミスタＲ２及びＦＥＴ２１が直列接続される。サーミスタＲ２は、電池セル組２０の近傍に設けられる。ＦＥＴ２１のゲートは、Ｖ端子に接続される。 The thermistor R2 and FET 21 are connected in series between the LS terminal and the ground. The thermistor R2 is provided in the vicinity of the battery cell set 20. The gate of the FET 21 is connected to the V terminal.
電動工具３０は、表示部３１、操作部３２、機器側制御部としての制御部３３、電源部３４、電池電圧検出部３５、スイッチ状態検出部３６、電流検出部３７、モータ４０、ＦＥＴ（スイッチング素子）４１、スイッチ４２、及び抵抗Ｒ３を含む。ＦＥＴ４１及びスイッチ４２は、駆動スイッチの例示である。 The electric tool 30 includes a display unit 31, an operation unit 32, a control unit 33 as a device side control unit, a power supply unit 34, a battery voltage detection unit 35, a switch state detection unit 36, a current detection unit 37, a motor 40, and a FET (switching). Element) 41, switch 42, and resistor R3. The FET 41 and the switch 42 are examples of a drive switch.
表示部３１は、電動工具３０の動作モードや異常（故障）有無の表示を行う。操作部３２は、表示部３１への表示開始をユーザが制御部３３に指示するための表示スイッチである。 The display unit 31 displays the operation mode of the power tool 30 and the presence / absence of an abnormality (failure). The operation unit 32 is a display switch for the user to instruct the control unit 33 to start displaying on the display unit 31.
制御部３３は、表示部３１による表示、及びモータ４０の駆動を制御する。制御部３３は、ＬＤ端子を介して電池パック１０の制御部１３から停止信号を受信すると、ＦＥＴ４１をオフ状態にしてモータ４０を停止する。制御部３３は、Ｔ端子を介して電池パック１０の制御部１３と通信（双方向通信）する。制御部３３は、Ｖ端子を介して電池パック１０のＦＥＴ２１のゲートにオン信号を送信することで、ＬＳ端子を介してサーミスタＲ２の電圧を受信し、電池セル組２０の温度を検出できる。制御部３３は、後述の故障フラグを記憶するための不揮発性メモリ（記憶部）を内蔵する。制御部３３が記憶する故障フラグ及び電池パックの固有番号（固有情報）は、電気機器情報（又は電池パック情報）の一例である。 The control unit 33 controls the display by the display unit 31 and the drive of the motor 40. When the control unit 33 receives the stop signal from the control unit 13 of the battery pack 10 via the LD terminal, the control unit 33 turns off the FET 41 and stops the motor 40. The control unit 33 communicates (two-way communication) with the control unit 13 of the battery pack 10 via the T terminal. The control unit 33 can receive the voltage of the thermistor R2 via the LS terminal and detect the temperature of the battery cell set 20 by transmitting an on signal to the gate of the FET 21 of the battery pack 10 via the V terminal. The control unit 33 has a built-in non-volatile memory (storage unit) for storing a failure flag described later. The failure flag and the unique number (unique information) of the battery pack stored in the control unit 33 are examples of the electric device information (or the battery pack information).
プラス端子とマイナス端子との間に、スイッチ４２、モータ４０、ＦＥＴ４１、及び抵抗Ｒ３が直列接続される。スイッチ４２は、ユーザがモータ４０への通電、停止を切り替える例えばトリガスイッチである。電源部３４は、プラス端子を介して入力される電池セル組２０の電圧を制御部３３の電源電圧に変換し、制御部３３に供給する。電池電圧検出部３５は、プラス端子の電圧を検出し、制御部３３に送信する。スイッチ状態検出部３６は、スイッチ４２のオンオフを検出し、制御部３３に送信する。電流検出部３７は、抵抗Ｒ３の電圧によりモータ４０の電流を検出し、制御部３３に送信する。 A switch 42, a motor 40, an FET 41, and a resistor R3 are connected in series between the positive terminal and the negative terminal. The switch 42 is, for example, a trigger switch that allows the user to switch between energization and stop of the motor 40. The power supply unit 34 converts the voltage of the battery cell set 20 input via the positive terminal into the power supply voltage of the control unit 33 and supplies it to the control unit 33. The battery voltage detection unit 35 detects the voltage of the positive terminal and transmits it to the control unit 33. The switch state detection unit 36 detects the on / off of the switch 42 and transmits it to the control unit 33. The current detection unit 37 detects the current of the motor 40 by the voltage of the resistor R3 and transmits it to the control unit 33.
充電器５０は、表示部５１、操作部５２、制御部５３、電池電圧検出部５５、電流検出部５７、電源回路（充電回路）６０、及び抵抗Ｒ４を含む。充電器５０は、外部の交流電源７０に接続され、交流電源７０の電力により電池パック１０を充電するものである。 The charger 50 includes a display unit 51, an operation unit 52, a control unit 53, a battery voltage detection unit 55, a current detection unit 57, a power supply circuit (charging circuit) 60, and a resistor R4. The charger 50 is connected to an external AC power source 70 and charges the battery pack 10 with the power of the AC power source 70.
表示部５１は、充電の進行状況や異常（故障）有無の表示を行う。操作部５２は、表示部５１への表示開始をユーザが制御部５３に指示するための表示スイッチである。 The display unit 51 displays the progress of charging and the presence / absence of an abnormality (failure). The operation unit 52 is a display switch for the user to instruct the control unit 53 to start displaying on the display unit 51.
制御部５３は、表示部５１による表示を制御するとともに、電源回路６０の制御により電池パック１０の充電を制御する。制御部５３は、ＬＤ端子を介して電池パック１０の制御部１３から停止信号（充電禁止信号）を受信すると、電源回路６０をオフにして電池パック１０の充電を停止する。制御部５３は、Ｔ端子を介して電池パック１０の制御部１３と通信（双方向通信）する。制御部５３は、Ｖ端子を介して電池パック１０のＦＥＴ２１のゲートにオン信号を送信することで、ＬＳ端子を介してサーミスタＲ２の電圧を受信し、電池セル組２０の温度を検出できる。制御部５３は、後述の故障フラグを記憶するための不揮発性メモリ（記憶部）を内蔵する。制御部５３が記憶する故障フラグ及び電池パックの固有番号は、電気機器情報（又は電池パック情報）の一例である。 The control unit 53 controls the display by the display unit 51 and controls the charging of the battery pack 10 by controlling the power supply circuit 60. When the control unit 53 receives a stop signal (charge prohibition signal) from the control unit 13 of the battery pack 10 via the LD terminal, the control unit 53 turns off the power supply circuit 60 and stops charging the battery pack 10. The control unit 53 communicates (two-way communication) with the control unit 13 of the battery pack 10 via the T terminal. The control unit 53 can receive the voltage of the thermistor R2 via the LS terminal and detect the temperature of the battery cell set 20 by transmitting an on signal to the gate of the FET 21 of the battery pack 10 via the V terminal. The control unit 53 has a built-in non-volatile memory (storage unit) for storing a failure flag described later. The failure flag and the unique number of the battery pack stored in the control unit 53 are examples of electrical device information (or battery pack information).
プラス端子とマイナス端子との間に電源回路６０及び抵抗Ｒ４が直列接続される。電池電圧検出部５５は、プラス端子の電圧を検出し、制御部５３に送信する。電流検出部５７は、抵抗Ｒ４の電圧により電源回路６０の電流（充電電流）を検出し、制御部５３に送信する。 A power supply circuit 60 and a resistor R4 are connected in series between the positive terminal and the negative terminal. The battery voltage detection unit 55 detects the voltage of the positive terminal and transmits it to the control unit 53. The current detection unit 57 detects the current (charging current) of the power supply circuit 60 by the voltage of the resistor R4 and transmits it to the control unit 53.
図４又は図５の状態において、例えば信号伝達手段又は電力伝達手段が故障している場合、電池パック１０の故障か、電動工具３０又は充電器５０の故障かが分からない。信号伝達手段は、Ｔ端子を介する通信、並びに、ＬＤ端子、ＬＳ端子及びＶ端子を介する信号伝達に係る構成部分である。電力伝達手段は、図４に示す電池パック１０の電池セル組２０から電動工具３０のモータ４０への電力伝達に係る構成部分、あるいは、図５に示す充電器５０の電源回路６０から電池パック１０の電池セル組２０への電力伝達に係る構成部分である。 In the state of FIG. 4 or 5, for example, when the signal transmission means or the power transmission means is out of order, it is not known whether the battery pack 10 is out of order or the power tool 30 or the charger 50 is out of order. The signal transmission means is a component related to communication via the T terminal and signal transmission via the LD terminal, the LS terminal, and the V terminal. The power transmission means is a component related to power transmission from the battery cell set 20 of the battery pack 10 shown in FIG. 4 to the motor 40 of the electric tool 30, or the battery pack 10 from the power supply circuit 60 of the charger 50 shown in FIG. This is a component related to power transmission to the battery cell set 20 of the above.
信号伝達手段や電力伝達手段の故障の例としては、電池パック１０側（以下「電池側」とも表記）、又は電動工具３０及び充電器５０側（以下「機器側」とも表記）における、以下の不良が挙げられる。・端子接触不良（端子変形、異物付着、位置決め不良）・回路不良（電子部品故障／実装不良）・配線不良（電線／基板パターンの断線、短絡等） Examples of failures of signal transmission means and power transmission means are as follows on the battery pack 10 side (hereinafter also referred to as "battery side") or the power tool 30 and charger 50 side (hereinafter also referred to as "equipment side"). There is a defect.・ Terminal contact failure (terminal deformation, foreign matter adhesion, positioning failure) ・ Circuit failure (electronic component failure / mounting failure) ・ Wiring failure (wire / board pattern disconnection, short circuit, etc.)
信号伝達手段が故障すると、例えば以下の現象（異常）が発生し、これにより信号伝達手段の故障が検出される。・機器側　・電池側との双方向通信において、要求に対する応答がない。・電池パック１０に接続されているサーミスタＲ２の抵抗値を検出できない。・電池側　・機器側との双方向通信において、要求に対する応答がない。・機器側に停止信号を出力しているにもかかわらず電流が流れ続ける。 When the signal transmission means fails, for example, the following phenomenon (abnormality) occurs, and the failure of the signal transmission means is detected. -There is no response to the request in bidirectional communication with the device side and battery side. -The resistance value of the thermistor R2 connected to the battery pack 10 cannot be detected. -There is no response to the request in bidirectional communication with the battery side and device side. -Current continues to flow even though a stop signal is output to the device side.
電力伝達手段が故障すると、例えば以下の現象（異常）が発生し、これにより電力伝達手段の故障が検出される。・機器側（電動工具３０側）　・スイッチ４２／ＦＥＴ４１をターンオンすると電池電圧が異常に急低下する。・電池電圧が断続的に急低下する（チャタリング現象）。・スイッチ４２／ＦＥＴ４１をターンオンしてもモータ４０に電流が流れない（制御部３３への電力が別経路で供給される場合）。・電池側　・電池電圧が異常に急低下する。・電池電圧が断続的に急低下する（チャタリング現象）。・電動工具３０側でスイッチ４２／ＦＥＴ４１をターンオンしてもモータに電流が流れない（制御部３３への電力が別経路で供給され、通信によりモータ４０の制御状態を認識できる構成の場合）。・機器側（充電器５０側）　・電源回路６０をオンすると電池電圧が異常に急上昇する。・充電中に電池電圧が断続的に急上昇する（チャタリング現象）。・電源回路６０をオンしても電流が流れない。 When the power transmission means fails, for example, the following phenomenon (abnormality) occurs, and the failure of the power transmission means is detected. -Device side (power tool 30 side) -When the switch 42 / FET 41 is turned on, the battery voltage drops abnormally. -Battery voltage drops sharply intermittently (chattering phenomenon). -No current flows in the motor 40 even if the switch 42 / FET 41 is turned on (when the power to the control unit 33 is supplied by another path).・ Battery side ・ Battery voltage drops abnormally. -Battery voltage drops sharply intermittently (chattering phenomenon). -No current flows through the motor even if the switch 42 / FET 41 is turned on on the power tool 30 side (when the power to the control unit 33 is supplied by another path and the control state of the motor 40 can be recognized by communication). -Device side (charger 50 side) -When the power supply circuit 60 is turned on, the battery voltage rises abnormally. -Battery voltage suddenly rises intermittently during charging (chattering phenomenon). -No current flows even when the power supply circuit 60 is turned on.
例えば電池側から機器側に停止信号を出力しているにもかかわらず電流が流れ続ける異常が発生した場合において、異常の原因が機器側の故障である場合、機器側では異常を検出できないことがある。また、機器側において電池側のサーミスタＲ２の抵抗値を検出できない異常が発生した場合において、異常の原因が電池側の故障である場合、電池側では異常を検出できないことがある。 For example, if an abnormality occurs in which current continues to flow even though a stop signal is output from the battery side to the device side, and the cause of the abnormality is a failure on the device side, the device side may not be able to detect the abnormality. be. Further, when an abnormality that cannot detect the resistance value of the thermistor R2 on the battery side occurs on the device side, if the cause of the abnormality is a failure on the battery side, the abnormality may not be detected on the battery side.
このように、異常の原因となっている故障を有する側が、異常を検出できないこともある。そうすると、故障した状態で使用を継続できてしまう恐れがある。これを防ぐために両者とも使用不可にする方法もあるが、それでは故障していない側まで使用できなくなるという不便が生じる。電池パック１０を複数所有しているユーザと比較して、同種の電動工具３０や充電器５０を複数所持しているユーザは少ないため、電動工具３０や充電器５０が使用不可になるとユーザへの影響が大きい。本実施の形態の目的の一つは、異常の原因となっている故障を有する側が異常を検出できない場合でも、故障を有さない側を使用不可とせずに、故障を有する側の使用の継続を防ぐことである。 In this way, the side with the failure that is the cause of the abnormality may not be able to detect the abnormality. Then, there is a risk that the product can be used continuously in a state of failure. There is a way to disable both of them in order to prevent this, but that causes the inconvenience of not being able to use the side that has not failed. Compared to users who own a plurality of battery packs 10, there are few users who have a plurality of power tools 30 and chargers 50 of the same type. A large impact. One of the objects of the present embodiment is to continue the use of the side with a failure without disabling the side without the failure even if the side with the failure causing the abnormality cannot detect the abnormality. Is to prevent.
（電池パック１０が機器側の故障と判断する方法）　電池パック１０の制御部１３は、電池側と機器側のどちらの故障かわからない異常を検出したら、Ｔ端子を介した通信で機器側のメモリに自身の固有番号とともに故障フラグを書き込む。制御部１３は、機器側のメモリに複数の電池パックによる故障フラグが書き込まれていたら、機器側の故障と判断する。なお、故障フラグは、故障種別、例えば、どの端子に相当する伝達手段の故障かを判別(制約)するための情報や、症状(異常の検知条件毎)の情報(ＬＤ端子応答なし、Ｔ端子応答なし、電圧急降下、チャタリング等)等を含むことができる。これにより、故障個所の特定が可能となる。 (Method of determining that the battery pack 10 is a failure on the device side) When the control unit 13 of the battery pack 10 detects an abnormality that does not indicate whether the failure is on the battery side or the device side, the memory on the device side is communicated via the T terminal. Write the failure flag along with its own unique number. If the failure flags due to the plurality of battery packs are written in the memory on the device side, the control unit 13 determines that the failure is on the device side. The failure flag is information for determining (constraining) the failure type, for example, which terminal the transmission means corresponds to, and information on the symptom (for each abnormality detection condition) (LD terminal no response, T terminal). No response, voltage drop, chattering, etc.) can be included. This makes it possible to identify the location of the failure.
（電池パック１０が電池側の故障と判断する方法）　電池パック１０の制御部１３は、電池側と機器側のどちらの故障かわからない異常を検出したら、Ｔ端子を介した通信で機器の固有番号を取得し、機器の固有番号とともに故障フラグを自身のメモリに記憶する。制御部１３は、複数の機器による故障フラグを記憶していたら、電池側の故障と判断する。制御部１３が記憶する電気機器の固有番号（固有情報）及び故障フラグは、電気機器情報の一例である。 (Method of determining that the battery pack 10 is a failure on the battery side) When the control unit 13 of the battery pack 10 detects an abnormality that does not indicate whether the failure is on the battery side or the device side, the device's unique number is communicated via the T terminal. Is acquired, and the failure flag is stored in its own memory together with the unique number of the device. If the control unit 13 stores the failure flags of the plurality of devices, the control unit 13 determines that the failure is on the battery side. The unique number (unique information) and the failure flag of the electric device stored in the control unit 13 are examples of the electric device information.
（ユーザが電池側と機器側のどちらの故障かを判断できる状態にする方法）　電池パック１０の制御部１３は、電池側又は機器側の故障と判断した場合、ＬＤ端子に停止信号（放電禁止信号又は充電禁止信号）を出力する。電池側及び機器側では、それぞれ表示スイッチが押されたら故障表示する。ここで、電池側の故障の場合、電池側は、他の電気機器と接続しても使用不可／故障表示であり、機器側は、他の電池パックと接続したら使用可能／通常表示のため、ユーザは電池側の故障だと判断できる。また、機器側の故障の場合、機器側は、他の電池パックと接続しても使用不可／故障表示であり、電池側は、他の電気機器と接続したら使用可能／通常表示のため、ユーザは機器側の故障だと判断できる。この電気機器又は電池パックの表示部による表示によって、異常が発生した機器又は電池（電動工具３０、充電器５０、電池パック１０）の使用禁止をユーザに促すことができる。 (Method for making it possible for the user to determine whether the failure is on the battery side or the device side) When the control unit 13 of the battery pack 10 determines that the failure is on the battery side or the device side, a stop signal (discharge prohibition) is sent to the LD terminal. Signal or charge prohibition signal) is output. On the battery side and the device side, a failure is displayed when the display switch is pressed. Here, in the case of a failure on the battery side, the battery side cannot be used even if it is connected to another electric device / failure display, and the device side can be used if it is connected to another battery pack / normal display. The user can determine that the failure is on the battery side. Also, in the case of a failure on the device side, the device side can not be used even if it is connected to another battery pack / failure display, and the battery side can be used if it is connected to another electric device / normal display, so the user Can be determined to be a device failure. The display on the display unit of the electric device or the battery pack can urge the user to prohibit the use of the device or the battery (electric tool 30, charger 50, battery pack 10) in which the abnormality has occurred.
電池パック１０の制御部１３は、電池側又は機器側の故障と判断した場合、無線通信部１９による無線通信で携帯機器８０（スマートデバイス）に故障を通知する。携帯機器８０の管理アプリは、故障を表示する。携帯機器８０は、管理アプリの機能として、無線通信で電池側と機器側のメモリを読み出し、電池側のメモリに故障フラグが複数の電気機器の固有番号とともに記憶されていたら電池側の故障と判断し、機器側のメモリに故障フラグが複数の電池パックの固有番号とともに記憶されていたら機器側の故障と判断し、故障を表示する。ユーザは、携帯機器８０の表示によっても、電池側の故障か機器側の故障かを判断できる。この携帯機器８０の表示によって、異常が発生した機器又は電池（電動工具３０、充電器５０、電池パック１０）の使用禁止をユーザに促すことができる。 When the control unit 13 of the battery pack 10 determines that the failure is on the battery side or the device side, the control unit 13 notifies the mobile device 80 (smart device) of the failure by wireless communication by the wireless communication unit 19. The management application of the mobile device 80 displays a failure. As a function of the management application, the portable device 80 reads out the memory on the battery side and the device side by wireless communication, and if the failure flag is stored in the memory on the battery side together with the unique numbers of a plurality of electric devices, it is determined that the failure is on the battery side. However, if the failure flag is stored in the memory of the device side together with the unique numbers of multiple battery packs, it is determined that the device has a failure and the failure is displayed. The user can also determine whether the failure is on the battery side or the device side by the display of the portable device 80. The display of the portable device 80 can urge the user to prohibit the use of the device or battery (power tool 30, charger 50, battery pack 10) in which the abnormality has occurred.
故障により使用不可とされた電池パック１０、電動工具３０又は充電器５０は、修理／メンテナンスサービス業者において、故障箇所を修理して故障フラグをクリアし、使用不可状態の解除が可能である。故障と判断されると、故障個所を修理しない限り恒久的に使用不可となる。すなわち、ユーザが電動工具３０のトリガスイッチ等の操作をやり直したり、電池パック１０を接続対象に再接続したり、充電器５０の電源を抜き差ししたりしても、使用不可の状態が維持される。 The battery pack 10, the power tool 30, or the charger 50, which has been disabled due to a failure, can be repaired by a repair / maintenance service provider, the failure flag is cleared, and the unusable state can be released. If it is determined to be out of order, it will be permanently unusable unless the faulty part is repaired. That is, even if the user re-operates the trigger switch of the power tool 30, reconnects the battery pack 10 to the connection target, or connects / disconnects the power supply of the charger 50, the unusable state is maintained. ..
図６は、電池パック１０等が自身の故障有無を判断する流れを示すフローチャートである。電池パック１０の制御部１３、電動工具３０の制御部３３、又は充電器５０の制御部５３（以下「制御部１３等」とも表記）は、自身のメモリの内容を読み出す（Ｓ１）。制御部１３等は、自身のメモリに複数の組合せで故障フラグ（異常フラグ）が記憶されている場合（Ｓ２のＹＥＳ）、すなわち自身のメモリに故障フラグが複数の固有番号と共に記憶されている場合、自身の側に故障があると判断し（Ｓ３）、自身を使用不可とする。あるいは、自身を使用不可とせずに、故障／異常の種類に応じてその後の動作を変更（選択）してもよい。例えば、図１１で後述するように、選択肢として、異常/故障の種類に応じてシステム停止、表示手段による報知、情報端末への通知を行うこともできる。故障／異常の種類によっては、システム停止するほど重要ではないが、一部の機能／性能に影響がある場合には情報端末への通知だけでも行いたい場合が考えられる。 FIG. 6 is a flowchart showing a flow of determining whether or not the battery pack 10 or the like has its own failure. The control unit 13 of the battery pack 10, the control unit 33 of the power tool 30, or the control unit 53 of the charger 50 (hereinafter, also referred to as “control unit 13 and the like”) reads out the contents of its own memory (S1). When the failure flag (abnormal flag) is stored in a plurality of combinations in its own memory (YES in S2), that is, when the failure flag is stored in its own memory together with a plurality of unique numbers. , Judges that there is a failure on its own side (S3), and disables itself. Alternatively, the subsequent operation may be changed (selected) according to the type of failure / abnormality without disabling itself. For example, as will be described later in FIG. 11, as options, system stoppage, notification by a display means, and notification to an information terminal can be performed according to the type of abnormality / failure. Depending on the type of failure / abnormality, it is not so important as to stop the system, but if some functions / performance are affected, it may be desired to notify the information terminal alone.
図７は、電池パック１０等が接続相手の故障有無を判断する流れを示すフローチャートである。制御部１３等は相手方機器が接続されているか否かを確認する（Ｓ５）。制御部１３等は、相手方機器が接続されていない場合（Ｓ５のＮＯ）、相手方機器に故障はないと判断する（Ｓ６）。制御部１３等は、相手方機器が接続されている場合（Ｓ５のＹＥＳ）において、相手方機器のメモリ内容読出し処理が未実行であれば（Ｓ７のＹＥＳ）、相手方機器のメモリの内容を読み出す（Ｓ８）。制御部１３等は、相手方機器のメモリに複数の組合せで故障フラグ（異常フラグ）が記憶されている場合（Ｓ９のＹＥＳ）、すなわち相手方機器のメモリに故障フラグが複数の固有番号と共に記憶されている場合、相手方機器に故障があると判断する（Ｓ１０）。このとき、電池パック１０の制御部１３は、ＬＤ端子に、電池セル組２０による放電を禁止する信号（又は電池セル組２０に対する充電を禁止する充電禁止信号）を出力する。あるいは、制御部１３は、スイッチ部２３にオフ信号を出力して電池セル組２０の充放電を禁止する。なお、放電や充電を禁止することに限定されず、図６と同様、故障／異常の種類に応じてその後の動作を変更（選択）してもよい。 FIG. 7 is a flowchart showing a flow in which the battery pack 10 and the like determine whether or not there is a failure of the connection partner. The control unit 13 and the like confirm whether or not the other party's device is connected (S5). When the other party's device is not connected (NO in S5), the control unit 13 and the like determine that the other party's device has no failure (S6). When the other device is connected (YES in S5), the control unit 13 or the like reads the memory contents of the other device if the memory content reading process of the other device has not been executed (YES in S7). ). When the failure flag (abnormal flag) is stored in the memory of the other device in a plurality of combinations (YES in S9), the control unit 13 or the like stores the failure flag in the memory of the other device together with a plurality of unique numbers. If so, it is determined that the other party's device has a failure (S10). At this time, the control unit 13 of the battery pack 10 outputs a signal for prohibiting discharge by the battery cell set 20 (or a charge prohibition signal for prohibiting charging of the battery cell set 20) to the LD terminal. Alternatively, the control unit 13 outputs an off signal to the switch unit 23 to prohibit charging / discharging of the battery cell set 20. It should be noted that the present invention is not limited to prohibiting discharging and charging, and the subsequent operation may be changed (selected) according to the type of failure / abnormality as in FIG.
図８は、電池パック１０等が信号伝達手段の異常有無を検出する流れを示すフローチャートである。制御部１３等は、信号Ａを送信した場合（Ｓ１１のＹＥＳ）において、信号Ａの送信結果として期待される応答や状態変化がない場合（Ｓ１２のＹＥＳ）、異常Ａを検出する（Ｓ１３）。信号Ａは、例えば、制御部１３等がＴ端子から送信する双方向通信における通信要求信号、制御部１３がＬＤ端子から出力する停止信号、制御部３３、５３がＶ端子に出力するオン信号である。異常Ａは、例えば、双方向通信における通信要求信号に対する応答がないこと、停止信号を出力しているにもかかわらず電流が流れ続けること、サーミスタＲ２の抵抗値を検出できないことである。制御部１３等は、信号Ｂの入力異常を検出した場合（Ｓ１４のＹＥＳ）、異常Ｂを検出する（Ｓ１５）。信号Ｂは、例えば、ＬＳ端子から制御部３３、５３に入力される温度信号である。異常Ｂは、例えば、サーミスタＲ２の抵抗値を検出できないことである。 FIG. 8 is a flowchart showing a flow in which the battery pack 10 or the like detects the presence or absence of an abnormality in the signal transmission means. When the signal A is transmitted (YES in S11), the control unit 13 or the like detects the abnormality A when there is no expected response or state change as the transmission result of the signal A (YES in S12) (S13). The signal A is, for example, a communication request signal in bidirectional communication transmitted from the T terminal by the control unit 13, a stop signal output from the LD terminal by the control unit 13, and an on signal output by the control units 33 and 53 to the V terminal. be. The abnormality A is, for example, that there is no response to the communication request signal in bidirectional communication, the current continues to flow even though the stop signal is output, and the resistance value of the thermistor R2 cannot be detected. When the control unit 13 or the like detects an input abnormality of the signal B (YES in S14), the control unit 13 or the like detects the abnormality B (S15). The signal B is, for example, a temperature signal input from the LS terminal to the control units 33 and 53. The abnormality B is, for example, that the resistance value of the thermistor R2 cannot be detected.
図９は、電池パック１０等が電力伝達手段の異常有無を検出する流れを示すフローチャートである。制御部１３等は、電池電圧の異常な変化を検出すると（Ｓ２１のＹＥＳ）、異常Ｃを検出する（Ｓ２２）。電池電圧の異常な変化及び異常Ｃは、例えば、電池電圧の異常な急低下や急上昇、断続的な急低下や急上昇である。制御部１３等は、動作状態Ｄの場合（Ｓ２３のＹＥＳ）において、動作状態Ｄで期待される状態でない場合（Ｓ２４のＹＥＳ）、異常Ｄを検出する。動作状態Ｄは、例えば、電動工具３０においてスイッチ４２及びＦＥＴ４１がオンの状態、あるいは充電器５０において電源回路６０がオンの状態である。異常Ｄは、例えば、動作状態Ｄにおいて放電電流あるいは充電電流が検出できないことである。 FIG. 9 is a flowchart showing a flow in which the battery pack 10 or the like detects the presence or absence of an abnormality in the power transmission means. When the control unit 13 or the like detects an abnormal change in the battery voltage (YES in S21), the control unit 13 or the like detects the abnormality C (S22). The abnormal change and abnormality C of the battery voltage are, for example, an abnormal sudden drop or sudden rise in the battery voltage, or an intermittent sudden drop or sudden rise. In the case of the operating state D (YES in S23), the control unit 13 and the like detect the abnormality D when the state is not the expected state in the operating state D (YES in S24). The operating state D is, for example, a state in which the switch 42 and the FET 41 are turned on in the power tool 30, or a state in which the power supply circuit 60 is turned on in the charger 50. The abnormality D is, for example, that the discharge current or the charge current cannot be detected in the operating state D.
図１０は、電池パック１０等が信号伝達手段又は電力伝達手段の異常を検出した場合に故障フラグを記憶する流れを示すフローチャートである。制御部１３等は、信号伝達手段又は電力伝達手段の異常を検出した場合（Ｓ３１のＹＥＳ）において、故障フラグ（異常フラグ）記憶処理が未実行の場合（Ｓ３２のＹＥＳ）、自身のメモリに異常種別と接続相手の固有番号を記憶し（Ｓ３３）、通信により相手方機器のメモリに異常種別と自身の固有番号を書き込む（Ｓ３４）。 FIG. 10 is a flowchart showing a flow of storing a failure flag when the battery pack 10 or the like detects an abnormality in the signal transmission means or the power transmission means. When the control unit 13 or the like detects an abnormality in the signal transmission means or the power transmission means (YES in S31), and the failure flag (abnormal flag) storage process is not executed (YES in S32), the control unit 13 or the like has an abnormality in its own memory. The type and the unique number of the connection partner are stored (S33), and the abnormal type and its own unique number are written in the memory of the other device by communication (S34).
図１１は、本実施の形態の電気機器システムにおける異常報知に係る動作のフローチャートである。制御部１３等は、システムを停止すべき異常（上記の異常Ａ～Ｄ等）や故障が検出された場合（Ｓ４１のＹＥＳ）、システム停止処理（放電や充電の停止）を行う（Ｓ４２）。制御部１３等は、表示スイッチが押された場合（Ｓ４３のＹＥＳ）において、表示すべき異常や故障がある場合（Ｓ４４のＹＥＳ）は異常表示処理を行い（Ｓ４５）、表示すべき異常や故障が無い場合（Ｓ４４のＮＯ）は通常の状態表示処理を行う（Ｓ４６）。制御部１３は、電池パック１０と携帯機器８０が通信接続状態の場合（携帯機器８０の管理アプリが起動していて携帯機器８０が無線通信可能範囲内にいる場合）（Ｓ４７のＹＥＳ）において、通知すべき異常や故障がある場合（Ｓ４８のＹＥＳ）、異常通知処理が未実行であれば（Ｓ４９のＹＥＳ）、携帯機器８０に対して異常通知処理を行う（Ｓ５０）。携帯機器８０は、画面表示等により異常をユーザに報知する。この異常報知によって、異常が発生した機器（電動工具３０、充電器５０、電池パック１０）の使用禁止をユーザに促すことができる。なお、携帯機器８０は、Ｓ５０で通知された異常を記憶しており、電池パック１０との通信可能範囲外であっても、管理アプリの機能により、ユーザの要求操作に応じて各機器の異常の有無を表示できる。 FIG. 11 is a flowchart of an operation related to abnormality notification in the electrical equipment system of the present embodiment. When an abnormality (such as the above-mentioned abnormalities A to D) for stopping the system or a failure is detected (YES in S41), the control unit 13 or the like performs a system stop processing (stopping discharge or charging) (S42). When the display switch is pressed (YES in S43), the control unit 13 or the like performs an abnormality display process (S45) when there is an abnormality or failure to be displayed (YES in S44), and the abnormality or failure to be displayed. If there is no (NO in S44), normal status display processing is performed (S46). The control unit 13 is in a communication connection state between the battery pack 10 and the mobile device 80 (when the management application of the mobile device 80 is activated and the mobile device 80 is within the wireless communication range) (YES in S47). If there is an abnormality or failure to be notified (YES in S48), and if the abnormality notification process has not been executed (YES in S49), the abnormality notification process is performed for the mobile device 80 (S50). The mobile device 80 notifies the user of an abnormality by displaying a screen or the like. By this abnormality notification, it is possible to urge the user to prohibit the use of the device (power tool 30, charger 50, battery pack 10) in which the abnormality has occurred. The mobile device 80 stores the abnormality notified in S50, and even if it is out of the communicable range with the battery pack 10, the abnormality of each device is made according to the operation requested by the user by the function of the management application. You can display the presence or absence of.
本実施の形態によれば、下記の効果を奏することができる。 According to this embodiment, the following effects can be obtained.
(1) 電池側及び機器側の各々において、異常が発生すると故障フラグと相手方機器の固有番号を記憶する構成のため、どちら側の故障で発生した異常かを検出できない種類の異常であっても、故障フラグが複数の相手方機器の固有番号（固有情報）と共に記憶されているか否かにより、どちら側が故障しているのかを推定でき、信頼性を向上させられる。また、異常の原因となっている故障を有する側が異常を検出できない場合でも故障を推定でき、故障した側の使用の継続を抑制できる。これにより、どちら側の故障で発生した異常かを検出できない種類の異常が発生した場合に両者を使用不可にする必要がなくなり、利便性が高められる。すなわち故障を有さない側まで使用不可とすることによる利便性の低下を抑制できる。 (1) Since the failure flag and the unique number of the other party's device are stored when an abnormality occurs on both the battery side and the device side, even if it is a type of abnormality that cannot be detected due to the failure on either side. , It is possible to estimate which side is out of order depending on whether or not the failure flag is stored together with the unique numbers (unique information) of a plurality of other party devices, and the reliability can be improved. Further, even if the side having the failure causing the abnormality cannot detect the abnormality, the failure can be estimated and the continuation of use of the failed side can be suppressed. This eliminates the need to disable both when an abnormality of a type that cannot detect which side of the failure caused the abnormality occurs, and enhances convenience. That is, it is possible to suppress a decrease in convenience due to disabling the use up to the side that does not have a failure.
(2) 電池パック１０、電動工具３０、及び充電器５０は、相手方機器が故障していると判断すると動作しないように構成されるため、故障した機器との接続時に動作することが抑制され、信頼性が高められる。 (2) Since the battery pack 10, the power tool 30, and the charger 50 are configured so as not to operate when it is determined that the other party's device is out of order, they are suppressed from operating when connected to the failed device. Increased reliability.
以上、実施の形態を例に本発明を説明したが、実施の形態の各構成要素や各処理プロセスには請求項に記載の範囲で種々の変形が可能であることは当業者に理解されるところである。以下、変形例について触れる。 Although the present invention has been described above by taking the embodiment as an example, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, a modification example will be touched upon.
電動工具３０は、図１～図３に示すインパクトドライバに限定されず、他の種類のものであってもよい。本発明の電気機器は、電動工具３０及び充電器５０に限定されず、クリーナやブロワ等の電動作業機であってもよいし、照明装置等の他の種類の電気機器であってもよい。 The power tool 30 is not limited to the impact driver shown in FIGS. 1 to 3, and may be another type. The electric device of the present invention is not limited to the electric tool 30 and the charger 50, and may be an electric work machine such as a cleaner or a blower, or may be another type of electric device such as a lighting device.
１０，１０Ａ…電池パック、１１…表示部、１２…操作部、１３…制御部（電池側制御部）、１４…電源部、１５…セル電圧検出部、１７…電流検出部、１８…セル温度検出部、１９…無線通信部、２０…電池セル、２１…ＦＥＴ（スイッチング素子）、２２…ヒューズ、２３…スイッチ部、３０…電動工具（電気機器）、３１…表示部、３２…操作部、３３…制御部（機器側制御部）、３４…電源部、３５…電池電圧検出部、３６…スイッチ状態検出部、３７…電流検出部、４０…モータ、４１…ＦＥＴ（スイッチング素子）、４２…スイッチ、５０…充電器（電気機器）、５１…表示部、５２…操作部、５３…制御部（機器側制御部）、５５…電池電圧検出部、５７…電流検出部、６０…電源回路（充電回路）、８０…携帯機器（スマートデバイス）、Ｒ１…抵抗、Ｒ２…サーミスタ、Ｒ３，Ｒ４…抵抗。 10, 10A ... Battery pack, 11 ... Display unit, 12 ... Operation unit, 13 ... Control unit (battery side control unit), 14 ... Power supply unit, 15 ... Cell voltage detection unit, 17 ... Current detection unit, 18 ... Cell temperature Detection unit, 19 ... Wireless communication unit, 20 ... Battery cell, 21 ... FET (switching element), 22 ... Fuse, 23 ... Switch unit, 30 ... Electric tool (electrical equipment), 31 ... Display unit, 32 ... Operation unit, 33 ... Control unit (device side control unit), 34 ... Power supply unit, 35 ... Battery voltage detection unit, 36 ... Switch state detection unit, 37 ... Current detection unit, 40 ... Motor, 41 ... FET (switching element), 42 ... Switch, 50 ... Charger (electrical equipment), 51 ... Display unit, 52 ... Operation unit, 53 ... Control unit (device side control unit), 55 ... Battery voltage detection unit, 57 ... Current detection unit, 60 ... Power supply circuit ( Charging circuit), 80 ... Portable device (smart device), R1 ... Resistance, R2 ... Thermista, R3, R4 ... Resistance.

Claims (12)

  1. 電気機器に接続可能な電池パックであって、
    電池セルと、
    前記電池セルの放電を制御する電池側制御部と、
    前記電池側制御部に接続された電池側インタフェースであって、前記電気機器を接続可能に構成された電池側インタフェースと、
    を有し、
    前記電池側制御部は、前記電気機器から前記電池側インタフェースに入力される電気機器情報に基づいて、前記電池セルによる放電を恒久的に禁止する放電禁止信号を出力するよう構成された、ことを特徴とする電池パック。     A battery pack that can be connected to electrical equipment
    Battery cell and
    A battery-side control unit that controls the discharge of the battery cell,
    A battery-side interface connected to the battery-side control unit, which is configured to be able to connect the electric device, and a battery-side interface.
    Have,
    The battery-side control unit is configured to output a discharge prohibition signal that permanently prohibits discharge by the battery cell based on the electric device information input from the electric device to the battery-side interface. Characterized battery pack.
  2. 請求項１に記載の電池パックであって、
    前記電池側制御部は、前記電池パックに接続された前記電気機器に故障又は異常が生じた場合に、前記電気機器情報に基づいて、前記放電禁止信号を出力するよう構成された、ことを特徴とする電池パック。     The battery pack according to claim 1.
    The battery-side control unit is configured to output the discharge prohibition signal based on the electric device information when a failure or abnormality occurs in the electric device connected to the battery pack. Battery pack.
  3. 請求項１又は２に記載の電池パックであって、
    前記電池側制御部は、前記電池側インタフェースを介して、前記電気機器に前記放電禁止信号を出力して前記セルによる放電を禁止するよう構成された、ことを特徴とする電池パック。     The battery pack according to claim 1 or 2.
    The battery-side control unit is configured to output the discharge prohibition signal to the electric device to prohibit discharge by the cell via the battery-side interface.
  4. 請求項１から３のいずれか一項に記載の電池パックであって、
    前記電池パックは、前記電池セルに接続されたスイッチ部を有し、
    前記電池側制御部は、前記スイッチ部に前記放電禁止信号を出力して前記電池セルによる放電を禁止するよう構成された、ことを特徴とする電池パック。     The battery pack according to any one of claims 1 to 3.
    The battery pack has a switch unit connected to the battery cell and has a switch portion.
    The battery-side control unit is configured to output the discharge prohibition signal to the switch unit to prohibit discharge by the battery cell.
  5. 請求項１から４のいずれか一項に記載の電池パックであって、
    前記電池側制御部は、前記電気機器情報が、自身とは別の電池パックとの接続時に故障又は異常があったことを示す場合に、前記放電禁止信号を出力するよう構成された、ことを特徴とする電池パック。     The battery pack according to any one of claims 1 to 4.
    The battery-side control unit is configured to output the discharge prohibition signal when the electric device information indicates that there is a failure or abnormality when connecting to a battery pack other than itself. Characterized battery pack.
  6. 電気機器と、前記電気機器に着脱可能な電池パックと、を備えた電気機器システムであって、
    前記電気機器は、機器側制御部と、前記電池パックが接続される電池パック接続部と、を有し、
    前記電池パックは、電池セルと、前記電池セルの放電又は充電を制御する電池側制御部と、を有し、
    前記機器側制御部と前記電池側制御部の少なくとも一方により、前記電気機器と前記電池パックの一方に故障の原因があると判断されると、前記一方の使用を恒久的に禁止又は使用禁止を促すよう異常報知する、ことを特徴とする電気機器システム。     An electric device system including an electric device and a battery pack that can be attached to and detached from the electric device.
    The electric device has a device-side control unit and a battery pack connection unit to which the battery pack is connected.
    The battery pack includes a battery cell and a battery-side control unit that controls discharging or charging of the battery cell.
    When it is determined by at least one of the device-side control unit and the battery-side control unit that one of the electric device and the battery pack has a cause of failure, the use of the one is permanently prohibited or prohibited. An electrical equipment system characterized by anomalous notification to encourage.
  7. 請求項６に記載の電気機器システムであって、
    前記電池側制御部は、前記電気機器から入力される電気機器情報が、自身とは別の電池パックとの接続時に故障又は異常があったことを示す場合に、前記電池セルの放電又は充電を禁止するよう構成される、ことを特徴とする電気機器システム。     The electrical equipment system according to claim 6.
    The battery-side control unit discharges or charges the battery cell when the electric device information input from the electric device indicates that there is a failure or abnormality when connecting to a battery pack other than itself. An electrical equipment system characterized by being configured to be banned.
  8. 請求項６又は７に記載の電気機器システムであって、
    前記電池側制御部は、複数の電気機器の電気機器情報を記憶している場合に、前記電池セルの放電又は充電を禁止するよう構成される、ことを特徴とする電気機器システム。     The electrical equipment system according to claim 6 or 7.
    The battery-side control unit is configured to prohibit discharging or charging of the battery cell when storing electric device information of a plurality of electric devices.
  9. 請求項６から８のいずれか一項に記載の電気機器システムであって、
    前記機器側制御部と前記電池側制御部の少なくとも一方は、前記電池パックを前記電気機器に接続して所定の条件を満たした状態において、前記電池パックの電圧が急激に変化した場合、又は、電流が流れない場合に故障と判断する、ことを特徴とする電気機器システム。     The electrical equipment system according to any one of claims 6 to 8.
    At least one of the device-side control unit and the battery-side control unit is connected to the electric device and satisfies a predetermined condition, and the voltage of the battery pack changes suddenly, or An electrical equipment system characterized in that it is judged as a failure when no current flows.
  10. 請求項９に記載の電気機器システムであって、
    前記所定の条件は、前記電気機器の駆動スイッチがターンオンされたこと、又は、前記電気機器による前記電池パックの充電が開始されたことを含む、電気機器システム。     The electrical equipment system according to claim 9.
    The predetermined condition is an electric device system including that the drive switch of the electric device is turned on or the charging of the battery pack by the electric device is started.
  11. 請求項６から１０のいずれか一項に記載の電気機器システムであって、
    前記機器側制御部と前記電池側制御部は互いに通信可能に構成され、
    前記故障の原因は、前記通信に起因して判断される、ことを特徴とする電気機器システム。     The electrical equipment system according to any one of claims 6 to 10.
    The device-side control unit and the battery-side control unit are configured to be able to communicate with each other.
    An electrical equipment system characterized in that the cause of the failure is determined due to the communication.
  12. 請求項６から１１のいずれか一項に記載の電気機器システムであって、
    前記故障の原因は、前記電気機器と前記電池パックの端子同士の接触不良、及び、前記電気機器又は前記電池パックの回路又は配線の不良、の少なくともいずれかを含む、ことを特徴とする電気機器システム。     The electrical equipment system according to any one of claims 6 to 11.
    The cause of the failure is an electric device including at least one of a poor contact between the terminal of the electric device and the terminal of the battery pack, and a failure of the circuit or wiring of the electric device or the battery pack. system.
PCT/JP2021/046844 2020-12-23 2021-12-17 Battery pack and electrical apparatus system WO2022138506A1 (en)

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EP4358357A1 (en) * 2022-10-12 2024-04-24 Techtronic Cordless GP Battery pack

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JP2007035479A (en) * 2005-07-28 2007-02-08 Nec Tokin Tochigi Ltd Battery pack and battery-pack-dedicated device
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JP2007035479A (en) * 2005-07-28 2007-02-08 Nec Tokin Tochigi Ltd Battery pack and battery-pack-dedicated device
JP2010251104A (en) * 2009-04-15 2010-11-04 Sanyo Electric Co Ltd Battery pack
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Publication number Priority date Publication date Assignee Title
EP4358357A1 (en) * 2022-10-12 2024-04-24 Techtronic Cordless GP Battery pack

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