WO2014054270A1 - Leak processing device and cell power source device - Google Patents
Leak processing device and cell power source device Download PDFInfo
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- WO2014054270A1 WO2014054270A1 PCT/JP2013/005839 JP2013005839W WO2014054270A1 WO 2014054270 A1 WO2014054270 A1 WO 2014054270A1 JP 2013005839 W JP2013005839 W JP 2013005839W WO 2014054270 A1 WO2014054270 A1 WO 2014054270A1
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- voltage
- battery
- leak
- conductive path
- resistance value
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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
- H01M10/4228—Leak testing of cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a leak processing apparatus for coping with a leak failure occurring in a circuit, and a battery power supply apparatus using the leak processing apparatus.
- the failure mode of a circuit is not limited to an open failure.
- a capacitor may be connected in parallel with the battery for the purpose of noise removal.
- a protection element may be connected in parallel with the battery for the purpose of circuit protection.
- the capacitor or the protective element is half short-circuited, the battery discharge current leaks (leaks) through these circuit elements.
- the insulation resistance between the wirings connected to both electrodes of the battery may be reduced, causing a leak failure.
- An object of the present invention is to provide a leak processing apparatus capable of coping with a leak failure and a battery power supply apparatus using the same.
- a leak treatment apparatus includes a first resistor having one end connected to one pole of a first battery, a first conductive path connected to the other end of the first resistor, and the other of the first battery.
- a connection resistor having one end connected to the pole, a connection conductive path connected to the other end of the connection resistance, and a first voltage detection unit that detects a voltage between the first conductive path and the connection conductive path
- a first discharge part capable of switching between an on state in which a predetermined reference current flows between the first conductive path and the connection conductive path and an off state in which the reference current does not flow, and the first discharge part
- the voltage detected by the first voltage detection unit when the first discharge unit is turned off is acquired as the first off voltage, and is detected by the first voltage detection unit when the first discharge unit is turned on.
- An on-off voltage acquisition unit for acquiring the obtained voltage as a first on-voltage; and A leak that calculates at least one of a resistance value between the first conductive path and the connection conductive path and a first battery voltage that is a battery voltage of the first battery based on a voltage and the first on-voltage.
- An information calculation unit for calculating a resistance value between the first conductive path and the connection conductive path and a first battery voltage that is a battery voltage of the first battery based on a voltage and the first on-voltage.
- the first off voltage and the first on voltage change depending on whether or not a leak failure has occurred between the first conductive path and the connection conductive path. Therefore, based on the first off-voltage and the first on-voltage, the resistance value between the first conductive path and the connection conductive path and the battery voltage of the original first battery excluding the influence of the leakage failure are the first.
- One battery voltage can be calculated. Therefore, by calculating at least one of the resistance value between the first conductive path and the connection conductive path and the first battery voltage based on the first off voltage and the first on voltage by the leak information calculation unit. Can deal with leak failure.
- the leak information calculation unit calculates a resistance value between the first conductive path and the connection conductive path as a first leak resistance value based on the first off voltage and the first on voltage. It is preferable to include a leak resistance calculation unit.
- the leak information calculation unit calculates the resistance value between the first conductive path and the connection conductive path based on the first off voltage and the first on voltage by the leak resistance calculation unit. It can be calculated as a resistance value.
- the connection resistance the current value of the reference current.
- the leakage resistance calculation unit can easily calculate the first leakage resistance value using the formula (A) based on the first off voltage and the first on voltage.
- the leak information calculation unit may calculate the first battery voltage based on the first leak resistance value calculated based on the first off voltage and the first on voltage and the first off voltage. It is preferable that the battery voltage calculation part to calculate is further included.
- the leak information calculation unit is the battery voltage of the original first battery excluding the influence of the leak failure based on the first leak resistance value and the first off voltage by the battery voltage calculation unit.
- the first battery voltage can be calculated.
- the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula
- Vb (1) ⁇ (2R / rv (1)) + 1 ⁇ ⁇ Vm (1) off (B)
- Vm (1) off the first off voltage rv (1): the first leakage resistance value R: the resistance value of the first resistance and the connection resistance.
- the battery voltage calculation unit can easily calculate the first battery voltage using the formula (B) based on the first leakage resistance value and the first off voltage.
- the leak information calculation unit may include a battery voltage calculation unit that calculates the first battery voltage based on the first off voltage and the first on voltage.
- the leak information calculation unit is the battery voltage of the original first battery excluding the influence of the leak failure based on the first off voltage and the first on voltage by the battery voltage calculation unit.
- One battery voltage can be calculated.
- the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula
- Vb (1) 2IcR ⁇ Vm (1) off / (Vm (1) off ⁇ Vm (1) on) (C)
- the battery voltage calculation unit can easily calculate the first battery voltage using the formula (C) based on the first off voltage and the first on voltage.
- the first battery and the second battery are connected in series, a second resistor having one end connected to a pole of the second battery different from the pole connected to the first battery, and the second battery A second conductive path connected to the other end of the two resistors, a second voltage detector for detecting a voltage between the second conductive path and the first conductive path, the second conductive path and the first A second discharge unit capable of switching between an on state in which the reference current flows between the conductive path and an off state in which the reference current does not flow, and the on / off voltage acquisition unit further includes the second discharge unit The voltage detected by the second voltage detector when the battery is turned off is acquired as the second off voltage, and is detected by the second voltage detector when the second discharge part is turned on. And the battery voltage calculation unit obtains the second on-voltage as the second on-voltage. Based on the voltage and the second on-voltage, it is preferable to further calculate the second battery voltage is a battery voltage of the second battery.
- the first battery and the second battery are connected in series, the second resistor having one end connected to a pole of the second battery that is different from the pole connected to the first battery,
- the battery voltage calculation unit Based on the second off voltage and the second on voltage, it is possible to further calculate the second battery voltage that is the original battery voltage of the second battery excluding the influence of the leak failure.
- the battery voltage calculation unit calculates the first battery voltage Vb (1) based on the following formula (D) when the first leakage resistance value becomes a negative value.
- Vb (1) Vm (1) off- [Vb (2) ⁇ ⁇ IcR- (Vm (1) on-Vm (1) off) ⁇ / (2IcR)] (D)
- the battery voltage calculation unit can calculate the first battery voltage Vb (1) by using Expression (D).
- the first leak resistance value when the first leak resistance value does not satisfy a preset determination value and the first leak resistance value becomes a positive value, the first leak resistance value is between the first conductive path and the connection conductive path.
- the first leakage resistance value is less than the determination value, and the first leakage resistance value is a negative value, the second conductive path and the first conductive path It is preferable to further include a determination unit that determines that there is a leak failure between.
- the battery voltage calculation unit when the determination unit determines that there is a leak failure between the first conductive path and the connection conductive path, the second off voltage, the second on voltage, Preferably, the second battery voltage is calculated based on the first battery voltage.
- the second off voltage and the second on voltage are affected by the leak fault of the adjacent circuit. If the second battery voltage is calculated based on the second off voltage and the second on voltage, the calculation accuracy of the second battery voltage decreases. Therefore, according to this configuration, when there is a leak failure between the first conductive path and the connection conductive path, the second battery is based on the first battery voltage in addition to the second off voltage and the second on voltage. By calculating the voltage, the calculation accuracy of the second battery voltage is improved.
- the battery voltage calculation unit is configured to calculate the second voltage based on the following formula (E). It is preferable to calculate the battery voltage Vb (2).
- Vb (2) Vm (2) off ⁇ Vb (1) ⁇ [ ⁇ 2IcR ⁇ (Vm (2) off ⁇ Vm (2) on) ⁇ / (IcR)] (E)
- the battery voltage calculation unit when it is determined that there is a leak failure between the first conductive path and the connection conductive path, the battery voltage calculation unit accurately uses the expression (E) to accurately calculate the second battery voltage Vb. (2) can be calculated.
- the determination unit determines that there is a leakage failure between the first conductive path and the connection conductive path
- the first conductive path is based on the second off voltage and the second on voltage.
- the resistance value between the first conductive resistance value and the connection conductive path is calculated as a first calculated resistance value, and the first calculated resistance value and the first leak resistance value are not substantially equal, a plurality of leak failures have occurred. Is preferably determined.
- the determination unit can determine that a plurality of leak failures have occurred when the first calculation resistance value and the first leak resistance value are not substantially equal.
- the determination unit calculates the first calculation resistance value rc (1) based on the following formula (F).
- rc (1) [ ⁇ -3IcR + 2 (Vm (2) off-Vm (2) on) ⁇ / ⁇ 2IcR- (Vm (2) off-Vm (2) on) ⁇ ] ⁇ R (F)
- R the resistance value Ic of the first resistor, the second resistor, and the connection resistor: the current value of the reference current.
- the determination unit can calculate the first calculation resistance value based on the second off voltage and the second on voltage by using the equation (F).
- the battery voltage calculation unit preferably does not calculate the second battery voltage when the determination unit determines that a plurality of leak failures have occurred.
- the battery voltage calculation unit does not calculate the second battery voltage, so that the erroneous second battery The possibility that the voltage is calculated is reduced.
- a battery power supply device includes the above-described leak processing device and the first battery.
- a battery power supply device includes the above-described leak processing device, the first battery, and the second battery.
- the leakage processing device and the battery power supply device having such a configuration can affect the resistance value between the first conductive path and the connection conductive path and the influence of the leak failure. It becomes possible to calculate the first battery voltage, which is the original battery voltage of the first battery removed. Therefore, by calculating at least one of the resistance value between the first conductive path and the connection conductive path and the first battery voltage based on the first off voltage and the first on voltage by the leak information calculation unit. Can deal with leak failure.
- FIG. 6 is a circuit diagram showing a model circuit for explaining a method for deriving equations (3) to (7).
- FIG. 6 is an explanatory diagram for explaining a relationship among Formula (III-rv), Formula (III-Vb), Formula (Vr), Formula (V-Vb), and Formula (VI-Vb).
- FIG. 1 is a block diagram showing an example of the configuration of a battery power supply device using a leak processing apparatus according to an embodiment of the present invention.
- a battery power supply device 1 shown in FIG. 1 includes a leak treatment device 2, an assembled battery 3, and connection terminals 11, 12, and 13.
- the assembled battery 3 includes, for example, n batteries B1, B2, B3,..., Bn connected in series in the same polarity direction.
- the batteries B1 to Bn are collectively referred to as a battery B, respectively.
- Battery B is a secondary battery such as a Ni-MH battery or a Li-ion battery.
- Each of the batteries B1 to Bn may be a single cell or a battery block in which a plurality of cells are combined.
- Connection terminals 11, 12, and 13 are connection terminals for connecting to external devices (not shown).
- the external device is, for example, a charging device that charges the assembled battery 3 or a load circuit that operates by receiving power supply from the assembled battery 3.
- the external device may be, for example, an electronic device such as a portable personal computer, a digital camera, or a mobile phone, or a main body part of a battery-equipped device system such as a vehicle such as an electric vehicle or a hybrid car.
- a power generation device such as a solar power generation device or a wind power generation device may be used.
- connection terminal 11 is connected to the positive electrode of the assembled battery 3, that is, the positive electrode of the battery Bn.
- a connection terminal 12 is connected to the negative electrode of the assembled battery 3, that is, the negative electrode of the battery B1.
- the connection terminal 13 is a connection terminal for communication.
- the battery power supply device 1 charges and discharges the assembled battery 3 through the connection terminals 11 and 12 by being connected to the external device as described above through the connection terminals 11, 12, and 13. Further, the battery power supply device 1 is configured to transmit information indicating the battery voltages Vb (1) to Vb (n) of the batteries B1 to Bn and information related to a leak failure to an external device via the connection terminal 13. Yes.
- the leak processing apparatus 2 includes a control unit 21, voltage detection units U1 to Un, a communication IF (interface) 24, resistors R0 to Rn, capacitors C1 to Cn, and discharge units D1 to Dn.
- the discharge part D1 (first discharge part) is a series circuit of a constant current source PS1 and a switching element SW1.
- the discharge part D2 (second discharge part) is a series circuit of the constant current source PS2 and the switching element SW2.
- the discharge part Dn is a series circuit of the constant current source PSn and the switching element SWn.
- the voltage detection units U1 to Un the capacitors C1 to Cn, the discharge units D1 to Dn, the constant current sources PS1 to PSn, and the switching elements SW1 to SWn are collectively referred to as the voltage detection unit U, the capacitor C, and the discharge unit D, respectively. , Constant current source PS, and switching element SW.
- the negative electrode of the battery B1 (first battery) is connected to one end of a resistor R0 (connection resistor).
- the other end of the resistor R0 is connected to the voltage detection unit U1 via a conductive path L (0) (connection conductive path).
- a connection point P1 between the positive electrode of the battery B1 and the negative electrode of the battery B2 (second battery) is connected to one end of the resistor R1 (first resistor).
- the other end of the resistor R1 is connected to a voltage detection unit U1 (first voltage detection unit) and a voltage detection unit U2 (second voltage detection unit) via a conductive path L (1) (first conductive path). Yes.
- connection point P2 between the positive electrode of the battery B2 and the negative electrode of the battery B3 is connected to one end of the resistor R2 (second resistor).
- the other end of the resistor R2 is connected to the voltage detection units U2 and U3 via a conductive path L (2) (second conductive path).
- connection point Pn-1 between the positive electrode of the battery Bn-1 and the negative electrode of the battery Bn is connected to one end of the resistor Rn-1.
- the other end of the resistor Rn-1 is connected to the voltage detectors Un-2 and Un-1 via a conductive path L (n-1).
- the positive electrode of the battery Bn is connected to one end of the resistor Rn.
- the other end of the resistor Rn is connected to the voltage detector Un through a conductive path L (n).
- One end of the capacitor C1 is connected to the conductive path L (0), and the other end of the capacitor C1 is connected to the conductive path L (1).
- One end of the capacitor C2 is connected to the conductive path L (1), and the other end of the capacitor C2 is connected to the conductive path L (2).
- One end of the capacitor C3 is connected to the conductive path L (2), and the other end of the capacitor C3 is connected to the conductive path L (3).
- one end of the capacitor Cn is connected to the conductive path L (n-1), and the other end of the capacitor Cn is connected to the conductive path L (n).
- the conductive path L (0) is connected to the conductive path L (1) through the discharge part D1.
- the conductive path L (1) is connected to the conductive path L (2) through the discharge part D2.
- the conductive path L (2) is connected to the conductive path L (3) through the discharge part D3.
- the conductive path L (n-1) is connected to the conductive path L (n) through the discharge part Dn.
- connection resistance, first resistance, connection conductive path, first conductive path, first discharge unit, second discharge unit, first voltage detection unit, and second voltage detection unit corresponds to the first and second batteries.
- connection resistance, first resistance, connection conductive path, first conductive path, first discharge unit, second discharge unit, first voltage detection unit, and second voltage detection unit corresponds to the first and second batteries.
- the resistor Rn-2, the resistor Rn-1, the conductive path L (n-2), the conductive path L (n- 1), the discharge unit Dn-1, the discharge unit Dn, the voltage detection unit Un-1, and the voltage detection unit Un are respectively connected resistance, first resistance, connection conductive path, first conductive path, and first discharge.
- the battery Bn is the first battery and the battery Bn-1 is the second battery
- the resistor Rn, the resistor Rn-1, the conductive path L (n), the conductive path L (n-1), the discharge part Dn, and the discharge part Dn -1, voltage detection unit Un, and voltage detection unit Un-1 are connected resistance, first resistance, connection conductive path, first conductive path, first discharge part, second discharge part, first voltage in claims You may make it respond
- the voltage detectors U1 to Un are each configured using a voltage detection circuit such as an analog-digital converter.
- the voltage detection unit U1 detects a voltage between the conductive path L (0) and the conductive path L (1) as a detection voltage Vm (1).
- the voltage detection unit U2 detects a voltage between the conductive path L (1) and the conductive path L (2) as a detection voltage Vm (2).
- the voltage detection unit U3 detects a voltage between the conductive path L (2) and the conductive path L (3) as a detection voltage Vm (3).
- the voltage detection unit Un detects the voltage between the conductive path L (n-1) and the conductive path L (n) as the detection voltage Vm (n).
- Resistors R0 to Rn and capacitors C1 to Cn constitute a filter circuit.
- the resistors R0 to Rn and the capacitors C1 to Cn remove high frequency noise components from the battery voltages Vb (1) to Vb (n).
- the switching elements SW1 to SWn are composed of transistors such as FETs (Field-Effect-Transistors) and relay switches, for example.
- the switching elements SW1 to SWn are turned on and off in response to control signals from the control unit 21, respectively.
- the constant current sources PS1 to PSn are constant current circuits for supplying a reference current having a predetermined reference current value Ic.
- a resistor having a preset reference resistance value may be used instead of the constant current sources PS1 to PSn.
- the discharge units D1 to Dn are turned on so that the reference current of the reference current value Ic flows between the corresponding conductive paths when the switching elements SW1 to SWn are turned on, and the reference currents are turned off when the switching elements SW1 to SWn are turned off. It will be in the off state that does not flow.
- the discharge units D1 to Dn do not include the switching elements SW1 to SWn, and the constant current sources PS1 to PSn are in an on state in which the reference current of the reference current value Ic flows according to the control signal from the control unit 21, respectively. It is good also as a structure switched to the OFF state which does not flow a reference current.
- the control unit 21 includes, for example, a CPU (Central Processing Unit) that executes predetermined arithmetic processing, a ROM (Read Only Memory) that stores a predetermined control program, and a RAM (Random Access Memory) that temporarily stores data. And these peripheral circuits and the like.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- the control part 21 functions as the on-off voltage acquisition part 211, the leak information calculation part 212, and the determination part 215 by executing the control program memorize
- the leak information calculation unit 212 includes a leak resistance calculation unit 213 and a battery voltage calculation unit 214.
- the on / off voltage acquisition unit 211 converts the detection voltages Vm (1) to Vm (n) detected by the voltage detection units U1 to Un into the off voltage Vm (1) off with the switching elements SW1 to SWn turned off. Obtained as ⁇ Vm (n) off.
- the on / off voltage acquisition unit 211 converts the detection voltages Vm (1) to Vm (n) detected by the voltage detection units U1 to Un into the on voltage Vm (1) with the switching elements SW1 to SWn turned on. ) Acquired as on to Vm (n) on.
- the leak resistance calculation unit 213 responds based on the off voltages Vm (1) off to Vm (n) off and the on voltages Vm (1) on to Vm (n) on acquired by the on / off voltage acquisition unit 211, respectively. Leakage resistance values rv (1) to rv (n) that are resistance values between the conductive paths are calculated.
- the battery voltage calculation unit 214 responds based on the off voltages Vm (1) off to Vm (n) off and the on voltages Vm (1) on to Vm (n) on acquired by the on / off voltage acquisition unit 211, respectively. Battery voltages Vb (1) to Vb (n) of the battery B are calculated.
- the determination unit 215 determines whether there is a leak failure based on the leak resistance values rv (1) to rv (n) calculated by the leak resistance calculation unit 213.
- the communication IF 24 shows information indicating the battery voltages Vb (1) to Vb (n) calculated by the battery voltage calculator 214, and leak resistance values rv (1) to rv (n) calculated by the leak resistance calculator 213.
- the like which is a communication interface circuit that transmits information related to a leak failure to an external device via the connection terminal 13.
- step S1 the on / off voltage acquisition unit 211 assigns 1 to a variable i as an initial process
- the on / off voltage acquisition unit 211 acquires, as the off voltage Vm (1) off, the detection voltage Vm (1) detected by the voltage detection unit U1 with the switching element SW1 turned off (step S2). .
- the on / off voltage acquisition unit 211 turns on the switching element SW1 and applies the detection voltage Vm (1) detected by the voltage detection unit U1 in a state where the current of the reference current value Ic is caused to flow by the constant current source PS1. And obtained as an on-voltage Vm (1) on (step S3). After acquiring the on-voltage Vm (1) on, the on-off voltage acquiring unit 211 turns off the switching element SW1.
- the leak resistance calculation unit 213 calculates the leak resistance value rv based on the off voltage Vm (1) off, the on voltage Vm (1) on acquired by the on / off voltage acquisition unit 211, and the following equation (1). (1) is calculated (step S4).
- Expression (1) corresponds to expression (A) in the claims.
- rv (1) ⁇ 2R (Vm (1) off-Vm (1) on) ⁇ / ⁇ 2IcR- (Vm (1) off-Vm (1) on) ⁇ (1)
- R resistance value of resistors R0 to Rn
- Ic reference current value Ic.
- the leak resistance calculation unit 213 sets the on voltages Vm (1) on to Vm (n) on in advance.
- the corresponding reference current value Ic may be calculated by dividing by the resistance value of the reference resistance.
- the determination unit 215 compares the leak resistance value rv (1) calculated by the leak resistance calculation unit 213 with a predetermined determination value Ra (step S5).
- the judgment value Ra is set to a sufficiently large resistance value. For example, even if the capacitors C1 to Cn, the protective elements (not shown), etc. are short-circuited and a leakage occurs between the conductive paths, the battery voltage Vb generated when the resistance value of the leakage resistance is the determination value Ra. (1) to Vb (n) detection error, that is, the difference between the battery voltage Vb (1) to Vb (n) and the off voltage Vm (1) off to Vm (n) off has a resistance value that can be ignored. The value is set as the determination value Ra.
- the determination value Ra is, for example, about 1 M ⁇ to 10 M ⁇ .
- step S5 If the leak resistance value rv (1) is equal to or greater than the determination value Ra (YES in step S5), the determination unit 215 has no leakage failure between the conductive paths L (0) and L (1), and the conductive path It is determined that there is no leak failure between L (1) and L (2) (step S6).
- the battery voltage calculator 214 uses the off voltage Vm (1) off detected by the voltage detector U1.
- the battery voltage Vb (1) is acquired (step S7), and the process proceeds to step S21.
- the determination unit 215 compares the leak resistance value rv (1) with 0 (step S8). . If the leak resistance value rv (1) exceeds 0 and is a positive value (YES in step S8), the determination unit 215 has a leak failure between the conductive paths L (0) and L (1). In addition, it is determined that there is no leak failure between the conductive paths L (1) and L (2) (step S9).
- the battery voltage calculation unit 214 calculates the battery voltage Vb (1) based on the off voltage Vm (1) off, the on voltage Vm (1) on, and the following equation (2) (step S10).
- Expression (2) corresponds to expression (C) in the claims.
- Vb (1) 2IcR ⁇ Vm (1) off / (Vm (1) off ⁇ Vm (1) on) (2)
- R resistance value of resistors R0 to Rn
- Ic reference current value Ic.
- the battery voltage calculation unit 214 calculates the battery voltage Vb (1) with high accuracy even when a leak failure occurs between the conductive paths L (0) and L (1). Can do.
- step S8 when the leak resistance value rv (1) is a value equal to or less than 0, for example, a negative value (NO in step S8), the determination unit 215 determines whether the current between the conductive paths L (0) and L (1). It is determined that there is no leak failure and that there is a leak failure between the conductive paths L (1) and L (2) (step S11). If there is a leak failure between the conductive paths L (1) and L (2), the battery voltage Vb (1) cannot be calculated at this time (calculated in step S38, which will be described later). Shifts to step S21 without calculating the battery voltage Vb (1).
- step S21 the on / off voltage acquisition unit 211 adds 1 to the variable i (step S21).
- step S21 the on / off voltage acquisition unit 211 acquires the detection voltage Vm (i) detected by the voltage detection unit Ui as the off voltage Vm (i) off in a state where the switching element SWi is turned off (step S22). .
- the on / off voltage acquisition unit 211 turns on the switching element SWi and supplies the detection voltage Vm (i) detected by the voltage detection unit Ui in a state where the current of the reference current value Ic is caused to flow by the constant current source PSi. And obtained as an on-voltage Vm (i) on (step S23). After acquiring the on-voltage Vm (i) on, the on-off voltage acquisition unit 211 turns off the switching element SWi.
- the determination unit 215 confirms whether or not a leak failure has occurred between the conductive paths L (i-2) and L (i-1) (step S24). Specifically, when the variable i is 2, the determination unit 215 confirms whether or not the determination unit 215 determines that there is a leak failure between the conductive paths L (0) and L (1) in step S9. If the variable i is 3 or more, in step S36 described later, the determination unit 215 determines that there is a leakage failure between the conductive paths L (i-1) and L (i) before adding 1 to the variable i. Confirm whether or not.
- the determination unit 215 determines that the off voltage Vm (i) off and the on voltage Vm ( i) On the basis of on and the following equation (3), the calculated resistance value rc (i-1) is calculated (step S25).
- Formula (3) corresponds to Formula (F) in the claims.
- rc (i-1) [ ⁇ -3IcR + 2 (Vm (i) off-Vm (i) on) ⁇ / ⁇ 2IcR- (Vm (i) off-Vm (i) on) ⁇ ] ⁇ R ( 3)
- R resistance value of resistors R0 to Rn
- Ic reference current value Ic.
- the determination unit 215 compares the leak resistance value rv (i-1) with the calculated resistance value rc (i-1) (step S26). Specifically, if the variable i is 2, the determination unit 215 compares the leak resistance value rv (1) calculated in step S4 with the calculated resistance value rc (i-1), and the variable i is 3 If so, the leakage resistance value rv (i) calculated before 1 is added to the variable i in step S31 described later is compared with the calculated resistance value rc (i-1).
- the determination unit 215 determines that the conductive path L (i-1), It is determined that no leak failure has occurred between L (i) and between the conductive paths L (i) and L (i + 1) (step S27).
- substantially equal means that the difference between the leak resistance value rv (i ⁇ 1) and the calculated resistance value rc (i ⁇ 1) is, for example, the voltage detection error of the voltage detection unit U and the resistances R0 to Rn. Meaning that it is within an error range that may be caused by a resistance value accuracy error and a calculation error of the leak resistance value rv (i-1) and the calculation resistance value rc (i-1) by the leak resistance calculation unit 213. Yes.
- the battery voltage calculation unit 214 calculates the battery voltage Vb (i) based on the off voltage Vm (i) off, the on voltage Vm (i) on, the battery voltage Vb (i-1), and the following equation (4). ) Is calculated (step S28), and the process proceeds to step S29.
- the battery voltage calculation unit 214 uses the battery voltage Vb (1) calculated in step S10 as the battery voltage Vb (i-1) if the variable i is 2, and if the variable i is 3 or more, the variable i
- the battery voltage Vb (i) calculated in step S37 before 1 is added to is used as the battery voltage Vb (i-1).
- Expression (4) corresponds to expression (E) in the claims.
- Vb (i) Vm (i) off-Vb (i-1) .times. [ ⁇ 2IcR- (Vm (i) off-Vm (i) on) ⁇ / (IcR)] (4)
- R resistance value of resistors
- Ic reference current value Ic.
- the battery voltage calculation unit 214 calculates the battery voltage Vb (i) with high accuracy based on the equation (4). be able to.
- the determination unit 215 determines that the conductive path L (i-2) , L (i-1), it is determined that a leak failure has occurred, that is, that a leak failure has occurred at a plurality of locations (step S30). If the leak failure occurs at a plurality of locations, the battery voltage Vb (i) cannot be calculated, and the determination unit 215 ends the process.
- the leakage resistance calculation unit 213 uses the off voltage Vm (i ) off, the on-voltage Vm (i) on, and the leak resistance value rv (i) is calculated based on the following equation (5) (step S31).
- Expression (5) corresponds to Expression (A) in the claims.
- rv (i) ⁇ 2R (Vm (i) off-Vm (i) on) ⁇ / ⁇ 2IcR- (Vm (i) off-Vm (i) on) ⁇ (5)
- R resistance value of resistors
- Ic reference current value Ic.
- the leakage resistance calculation unit 213 performs the leakage resistance value rv (1) to rv (1) to the conductive path connected to each battery B even when the plurality of batteries B are connected in series by the process of step S31. rv (n) can be calculated.
- the determination unit 215 compares the leak resistance value rv (i) calculated in step S31 with the determination value Ra (step S32). When the leakage resistance value rv (i) is equal to or greater than the determination value Ra (YES in step S32), the determination unit 215 has no leakage failure between the conductive paths L (i-1) and L (i), and It is determined that there is no leak failure between the conductive paths L (i) and L (i + 1) (step S33).
- the battery voltage calculation unit 214 uses the off voltage Vm (i) off detected by the voltage detection unit Ui.
- the battery voltage Vb (i) is acquired (step S34), and the process proceeds to step S29.
- the determination unit 215 compares the leakage resistance value rv (i) with 0 (step S35). If the leak resistance value rv (i) exceeds 0 and is a positive value (YES in step S35), the determination unit 215 causes the leakage failure between the conductive paths L (i-1) and L (i). And there is no leakage failure between the conductive paths L (i) and L (i + 1) (step S33).
- the detection voltage Vm (i) detected by the voltage detection unit Ui that is, the off voltage Vm (i) off includes a voltage drop of Ri and Ri ⁇ 1.
- the battery voltage calculation unit 214 calculates the battery voltage Vb (i) based on the off voltage Vm (i) off, the on voltage Vm (i) on, and the following equation (6) (step S37).
- Expression (6) corresponds to Expression (C) in the claims.
- Vb (i) 2IcR ⁇ Vm (i) off / (Vm (i) off ⁇ Vm (i) on) (6)
- R resistance value of resistors R0 to Rn
- Ic reference current value Ic.
- the battery voltage calculation unit 214 calculates the battery voltage Vb (i) with high accuracy even when a leak failure occurs between the conductive paths L (i-1) and L (i). can do.
- step S38 the battery voltage calculation unit 214 changes the battery voltage Vb (i) calculated in step S37, the off voltage Vm (i-1) off, and the on voltage Vm (i-1) on. Based on the following formula (7), the battery voltage Vb (i-1) is calculated (step S38), and the process proceeds to step S29.
- Expression (7) corresponds to Expression (D) in the claims.
- Vb (i-1) Vm (i-1) off- [Vb (i) * ⁇ IcR- (Vm (i-1) on-Vm (i-1) off) ⁇ / (2IcR)] ... (7)
- R resistance value of resistors R0 to Rn
- Ic reference current value Ic.
- step S38 a leakage failure has occurred between the conductive paths connected to both ends of the battery B adjacent to the battery Bi before 1 is added to the variable i, so that the leakage resistance values rv (1), rv Even if (i) becomes a negative value (No in steps S8 and S35) and the correct battery voltage Vb (i) cannot be calculated (steps S11 and S39), it can be calculated.
- the battery voltage Vb (i-1) corresponding to the battery voltage Vb (i) that did not exist can be calculated.
- step S35 when the leak resistance value rv (1) is a value equal to or less than 0, for example, a negative value (NO in step S35), the determination unit 215 determines the conductive paths L (i-1), L (i ) Between the conductive paths L (i) and L (i + 1) (step S39). If there is a leak failure between the conductive paths L (i) and L (i + 1), the battery voltage Vb (i) cannot be calculated at this time (calculated in step S38). Shifts to step S29 without calculating the battery voltage Vb (i).
- step S29 the on / off voltage acquisition unit 211 compares the variable i with the number n of the batteries B (step S29). If the variable i is equal to the number n (Yes in step S29), the battery voltages Vb (1) to Vb (n) are calculated for all the batteries B, and the leakage resistance value of the conductive path corresponding to each battery B is calculated. Since the calculation of rv (1) to rv (n) and the determination of the presence or absence of a leak failure in each conductive path have been completed, the on / off voltage acquisition unit 211 ends the process.
- step S29 the on / off voltage acquisition unit 211 proceeds to step S21 to continue the process for the next battery B.
- the battery power supply device 1 and the leak processing device 2 shown in FIG. 1 deal with the leak failure by the processing of steps S1 to S39, calculate the battery voltages Vb (1) to Vb (n), and each battery B It is possible to calculate the leakage resistance values rv (1) to rv (n) of the conductive paths corresponding to the above and determine whether there is a leak failure in each conductive path.
- the communication IF 24 includes information indicating the battery voltage Vb (1) to Vb (n), the leak resistance values rv (1) to rv (n), and the determination result of the presence or absence of a leak failure in each conductive path. You may transmit to the external device connected to the connection terminal 13.
- FIG. 1 the communication IF 24 includes information indicating the battery voltage Vb (1) to Vb (n), the leak resistance values rv (1) to rv (n), and the determination result of the presence or absence of a leak failure in each conductive path. You may transmit to the external device connected to the connection terminal 13.
- the control unit 21 may include an equalization processing unit that equalizes the battery voltages Vb (1) to Vb (n) based on the battery voltages Vb (1) to Vb (n). Specifically, for example, the controller 21 updates the battery voltages Vb (1) to Vb (n) by repeatedly executing steps S1 to S39.
- the equalization processing unit sets a battery B other than the battery B corresponding to the lowest voltage among the battery voltages Vb (1) to Vb (n) as an equalization discharge target battery, and performs switching corresponding to the equalization discharge target battery.
- the element SW is turned on until the battery voltage Vb of the corresponding equalization discharge target battery becomes substantially equal to the lowest voltage, and the equalization discharge target battery is discharged. Thereby, even when a leak failure occurs, the battery voltages Vb (1) to Vb (n) can be equalized with high accuracy.
- the battery voltage calculation unit 214 uses the following equation (8) instead of the equation (2) in step S10, the leakage resistance value rv (1) calculated in step S4, and the off voltage Vm (1). off Based on the above, the battery voltage Vb (1) may be calculated.
- Expression (8) corresponds to Expression (B) in the claims.
- Vb (1) ⁇ (2R / rv (1)) + 1 ⁇ ⁇ Vm (1) off (8)
- R Resistance values of the resistors R0 to Rn
- the battery voltage calculation unit 214 uses the following equation (9) instead of the equation (6), and uses the leakage resistance value rv (i calculated in step S31. ) And the off voltage Vm (i) off, the battery voltage Vb (i) may be calculated.
- Expression (9) corresponds to Expression (B) in the claims.
- Vb (i) ⁇ (2R / rv (i)) + 1 ⁇ * Vm (i) off (9)
- R Resistance value of resistors R0 to Rn
- step S29 you may transfer to step S29 from step S27, without performing step S28.
- the battery voltage Vb (i) of the battery Bi is set. It can be calculated with high accuracy.
- steps S25, S26, S27, and S30 may not be executed, and the process may proceed from step S24 to step S28.
- steps S25, S26, S27, and S30 the risk of calculating the low-accuracy battery voltage Vb (i) when a plurality of leak failures has occurred is reduced. Further, the occurrence state of the leak failure can be determined in detail by steps S27 and S30.
- steps S8, S9, S11 and steps S35, S36, S39 are not executed, and NO is determined in step S5 and NO in step S32, the process may proceed to steps S10 and S37, respectively.
- steps S8, S9, and S11 and Steps S35, S36, and S39 it is possible to determine the occurrence status of the leak failure in detail.
- the battery voltage Vb (i) is not calculated, so the battery voltage Vb (i) with low accuracy is calculated. The fear is reduced.
- steps S5 to S9, S11, and steps S32 to S36, S39 may not be executed, and the process may proceed from steps S4 and S31 to steps S10 and S37, respectively.
- steps S5 to S7 and steps S32 to S34 the battery voltages Vb (1), Vb are not executed without executing the equations (2) and (6). Since (i) is obtained, the amount of calculation processing can be reduced.
- the battery B may be one. If there is only one battery B, steps S8, S11, and S21 to S39 may not be executed, and if No in step S5, the process may move to step S9.
- the battery voltage calculation unit 214 may not be provided, and steps S7, S10, S28, S34, S37, and S38 may not be executed.
- leakage resistance calculation unit 213 and the determination unit 215 are not provided, and steps S4 to S9, S11, S24 to S28, S30 to S36, and S39 are not executed, and the process proceeds from step S3 to step S10, and from step S23 to step It is good also as a structure which transfers to S37.
- r v leakage resistance I rv is current flowing through the leakage resistance
- V M (i) is the detected voltage value of the voltage detection unit Ui
- I R is the resistance
- the value of the current flowing through Ri indicates “ _on ” added to the end of the symbol, which indicates that the switching element SWi is on, and “ _off ” added to the end of the symbol indicates the switching element SWi. This is the value when is off.
- a circuit including the battery Bi and the conductive paths L (i ⁇ 1) and L (i) corresponding to the battery Bi, the constant current source PSi, the switching element SWi, and the voltage detection unit Ui is referred to as a channel “chi”. .
- the formula (1) is obtained from the formula (Ir), and the formula (2) is obtained from the formula (I-Vb).
- the circuit model shown in FIG. 6 includes three chn ⁇ 1, chn, and chn + 1.
- the formula (3) is obtained from the formula (III-rv), and the formula (4) is obtained from the formula (III-Vb).
- the formula (5) is obtained from the formula (Vr), and the formula (6) is obtained from the formula (V-Vb).
- a leak treatment apparatus and a battery power supply apparatus using the leak treatment apparatus include a portable personal computer, a digital camera, a mobile phone, an electric vehicle, a hybrid car, a hybrid elevator, and a solar cell, a power generation device, and a secondary battery. It can be suitably used in various devices and systems such as a combined power supply system and a non-disruptive power supply device.
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
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Abstract
Provided are a leak processing device that can deal with leakage faults, and a cell power source device that uses this leak processing device. The leak processing device (2) comprises: an on-off voltage acquisition unit (211) for acquiring the voltage detected by a voltage detector (U1) as an off voltage (Vm(1)off) when a discharger (D1) is turned off, and acquiring the voltage detected by the voltage detector (U1) as an on voltage (Vm(1)on) when the discharger (D1) is turned on; and a leak information calculator (212) for calculating the resistance value between a conduction path (L(1)) and a conduction path (L(0)) and/or a cell voltage (Vb(1)) which is the cell voltage of a cell (B1), on the basis of the off voltage (Vm(1)off) and the on voltage (Vm(1)on).
Description
本発明は、回路中に生じたリーク故障に対処するためのリーク処理装置、及びこれを用いた電池電源装置に関する。
The present invention relates to a leak processing apparatus for coping with a leak failure occurring in a circuit, and a battery power supply apparatus using the leak processing apparatus.
従来より、電池を用いた電源装置の回路中において、導電路の断線や部品がオープンになるオープン故障が発生した場合、このような故障の発生を検出したり、オープン故障の影響を考慮して電池電圧の測定値を補正したりすることによって、オープン故障に対処する技術が知られている(例えば、特許文献1参照。)。
Conventionally, in the circuit of a battery-powered power supply device, when an open failure that causes a disconnection of a conductive path or an open part occurs, the occurrence of such a failure is detected and the effect of the open failure is taken into consideration. A technique for dealing with an open failure by correcting a measured value of the battery voltage is known (for example, see Patent Document 1).
ところで、回路の故障モードはオープン故障に限らない。例えば、ノイズ除去を目的として、電池と並列にコンデンサが接続されている場合がある。あるいは、回路保護を目的として、電池と並列に保護素子が接続されている場合もある。
By the way, the failure mode of a circuit is not limited to an open failure. For example, a capacitor may be connected in parallel with the battery for the purpose of noise removal. Alternatively, a protection element may be connected in parallel with the battery for the purpose of circuit protection.
このような場合、コンデンサや保護素子がハーフショート故障すると、電池の放電電流がこれらの回路素子を介してリーク(漏洩)するリーク故障となる。また、例えば結露や炭化等の影響により、電池の両極に接続された配線間の絶縁抵抗が低下して、リーク故障が発生する場合もある。
In such a case, if the capacitor or the protective element is half short-circuited, the battery discharge current leaks (leaks) through these circuit elements. In addition, for example, due to the influence of dew condensation or carbonization, the insulation resistance between the wirings connected to both electrodes of the battery may be reduced, causing a leak failure.
しかしながら、上述の背景技術では、オープン故障しか想定していないため、リーク故障が発生した場合に対処することができないという、不都合があった。
However, since the above-described background art only assumes an open failure, there is an inconvenience that a leak failure cannot be dealt with.
本発明の目的は、リーク故障に対処することができるリーク処理装置、及びこれを用いた電池電源装置を提供することである。
An object of the present invention is to provide a leak processing apparatus capable of coping with a leak failure and a battery power supply apparatus using the same.
本発明に係るリーク処理装置は、第1電池の一方の極に一端が接続された第1抵抗と、前記第1抵抗の他端に接続された第1導電路と、前記第1電池の他方の極に一端が接続された接続抵抗と、前記接続抵抗の他端に接続された接続導電路と、前記第1導電路と前記接続導電路との間の電圧を検出する第1電圧検出部と、前記第1導電路と前記接続導電路との間に所定の基準電流を流すオン状態と、前記基準電流を流さないオフ状態とを切り替え可能な第1放電部と、前記第1放電部をオフ状態にさせたときに前記第1電圧検出部によって検出された電圧を第1オフ電圧として取得し、前記第1放電部をオン状態にさせたときに前記第1電圧検出部によって検出された電圧を第1オン電圧として取得するオンオフ電圧取得部と、前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1導電路と前記接続導電路との間の抵抗値及び前記第1電池の電池電圧である第1電池電圧のうち少なくとも一方を算出するリーク情報算出部とを備える。
A leak treatment apparatus according to the present invention includes a first resistor having one end connected to one pole of a first battery, a first conductive path connected to the other end of the first resistor, and the other of the first battery. A connection resistor having one end connected to the pole, a connection conductive path connected to the other end of the connection resistance, and a first voltage detection unit that detects a voltage between the first conductive path and the connection conductive path A first discharge part capable of switching between an on state in which a predetermined reference current flows between the first conductive path and the connection conductive path and an off state in which the reference current does not flow, and the first discharge part The voltage detected by the first voltage detection unit when the first discharge unit is turned off is acquired as the first off voltage, and is detected by the first voltage detection unit when the first discharge unit is turned on. An on-off voltage acquisition unit for acquiring the obtained voltage as a first on-voltage; and A leak that calculates at least one of a resistance value between the first conductive path and the connection conductive path and a first battery voltage that is a battery voltage of the first battery based on a voltage and the first on-voltage. An information calculation unit.
この構成によれば、第1導電路と接続導電路との間にリーク故障が生じているか否かに応じて、第1オフ電圧と第1オン電圧とが、それぞれ変化する。従って、第1オフ電圧と第1オン電圧とに基づいて、第1導電路と接続導電路との間の抵抗値や、リーク故障の影響を除いた本来の第1電池の電池電圧である第1電池電圧を算出することが可能となる。そこで、リーク情報算出部によって、第1オフ電圧と第1オン電圧とに基づいて、第1導電路と接続導電路との間の抵抗値及び第1電池電圧のうち少なくとも一方を算出することによって、リーク故障に対処することができる。
According to this configuration, the first off voltage and the first on voltage change depending on whether or not a leak failure has occurred between the first conductive path and the connection conductive path. Therefore, based on the first off-voltage and the first on-voltage, the resistance value between the first conductive path and the connection conductive path and the battery voltage of the original first battery excluding the influence of the leakage failure are the first. One battery voltage can be calculated. Therefore, by calculating at least one of the resistance value between the first conductive path and the connection conductive path and the first battery voltage based on the first off voltage and the first on voltage by the leak information calculation unit. Can deal with leak failure.
また、前記リーク情報算出部は、前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1導電路と前記接続導電路との間の抵抗値を第1リーク抵抗値として算出するリーク抵抗算出部を含むことが好ましい。
The leak information calculation unit calculates a resistance value between the first conductive path and the connection conductive path as a first leak resistance value based on the first off voltage and the first on voltage. It is preferable to include a leak resistance calculation unit.
この構成によれば、リーク情報算出部は、リーク抵抗算出部によって、第1オフ電圧と第1オン電圧とに基づいて、第1導電路と接続導電路との間の抵抗値を第1リーク抵抗値として算出することができる。
According to this configuration, the leak information calculation unit calculates the resistance value between the first conductive path and the connection conductive path based on the first off voltage and the first on voltage by the leak resistance calculation unit. It can be calculated as a resistance value.
また、前記リーク抵抗算出部は、下記の式(A)に基づいて、前記第1リーク抵抗値rv(1)を算出することが好ましい。
rv(1)={2R(Vm(1)off-Vm(1)on)}/{2IcR-(Vm(1)off-Vm(1)on)}・・・(A)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, it is preferable that the leakage resistance calculation unit calculates the first leakage resistance value rv (1) based on the following formula (A).
rv (1) = {2R (Vm (1) off-Vm (1) on)} / {2IcR- (Vm (1) off-Vm (1) on)} (A)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance: the current value of the reference current.
rv(1)={2R(Vm(1)off-Vm(1)on)}/{2IcR-(Vm(1)off-Vm(1)on)}・・・(A)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, it is preferable that the leakage resistance calculation unit calculates the first leakage resistance value rv (1) based on the following formula (A).
rv (1) = {2R (Vm (1) off-Vm (1) on)} / {2IcR- (Vm (1) off-Vm (1) on)} (A)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance: the current value of the reference current.
この構成によれば、リーク抵抗算出部は、第1オフ電圧と第1オン電圧とに基づいて、式(A)を用いて容易に第1リーク抵抗値を算出することができる。
According to this configuration, the leakage resistance calculation unit can easily calculate the first leakage resistance value using the formula (A) based on the first off voltage and the first on voltage.
また、前記リーク情報算出部は、前記第1オフ電圧と前記第1オン電圧とに基づき算出された前記第1リーク抵抗値と、前記第1オフ電圧とに基づいて、前記第1電池電圧を算出する電池電圧算出部をさらに含むことが好ましい。
The leak information calculation unit may calculate the first battery voltage based on the first leak resistance value calculated based on the first off voltage and the first on voltage and the first off voltage. It is preferable that the battery voltage calculation part to calculate is further included.
この構成によれば、リーク情報算出部は、電池電圧算出部によって、第1リーク抵抗値と第1オフ電圧とに基づいて、リーク故障の影響を除いた本来の第1電池の電池電圧である第1電池電圧を算出することができる。
According to this configuration, the leak information calculation unit is the battery voltage of the original first battery excluding the influence of the leak failure based on the first leak resistance value and the first off voltage by the battery voltage calculation unit. The first battery voltage can be calculated.
また、前記電池電圧算出部は、下記の式(B)に基づいて、前記第1電池電圧Vb(1)を算出することが好ましい。
Vb(1)={(2R/rv(1))+1}×Vm(1)off・・・(B)
但し、
Vm(1)off:前記第1オフ電圧
rv(1) :前記第1リーク抵抗値
R:前記第1抵抗及び前記接続抵抗の抵抗値。 Moreover, it is preferable that the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula | equation (B).
Vb (1) = {(2R / rv (1)) + 1} × Vm (1) off (B)
However,
Vm (1) off: the first off voltage rv (1): the first leakage resistance value R: the resistance value of the first resistance and the connection resistance.
Vb(1)={(2R/rv(1))+1}×Vm(1)off・・・(B)
但し、
Vm(1)off:前記第1オフ電圧
rv(1) :前記第1リーク抵抗値
R:前記第1抵抗及び前記接続抵抗の抵抗値。 Moreover, it is preferable that the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula | equation (B).
Vb (1) = {(2R / rv (1)) + 1} × Vm (1) off (B)
However,
Vm (1) off: the first off voltage rv (1): the first leakage resistance value R: the resistance value of the first resistance and the connection resistance.
この構成によれば、電池電圧算出部は、第1リーク抵抗値と第1オフ電圧とに基づいて、式(B)を用いて容易に第1電池電圧を算出することができる。
According to this configuration, the battery voltage calculation unit can easily calculate the first battery voltage using the formula (B) based on the first leakage resistance value and the first off voltage.
また、前記リーク情報算出部は、前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1電池電圧を算出する電池電圧算出部を含んでもよい。
The leak information calculation unit may include a battery voltage calculation unit that calculates the first battery voltage based on the first off voltage and the first on voltage.
この構成によれば、リーク情報算出部は、電池電圧算出部によって、第1オフ電圧と第1オン電圧とに基づいて、リーク故障の影響を除いた本来の第1電池の電池電圧である第1電池電圧を算出することができる。
According to this configuration, the leak information calculation unit is the battery voltage of the original first battery excluding the influence of the leak failure based on the first off voltage and the first on voltage by the battery voltage calculation unit. One battery voltage can be calculated.
また、前記電池電圧算出部は、下記の式(C)に基づき、前記第1電池電圧Vb(1)を算出することが好ましい。
Vb(1)=2IcR×Vm(1)off/(Vm(1)off-Vm(1)on)・・・(C)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Moreover, it is preferable that the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula | equation (C).
Vb (1) = 2IcR × Vm (1) off / (Vm (1) off−Vm (1) on) (C)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance: the current value of the reference current.
Vb(1)=2IcR×Vm(1)off/(Vm(1)off-Vm(1)on)・・・(C)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Moreover, it is preferable that the said battery voltage calculation part calculates said 1st battery voltage Vb (1) based on the following formula | equation (C).
Vb (1) = 2IcR × Vm (1) off / (Vm (1) off−Vm (1) on) (C)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance: the current value of the reference current.
この構成によれば、電池電圧算出部は、第1オフ電圧と第1オン電圧とに基づいて、式(C)を用いて容易に第1電池電圧を算出することができる。
According to this configuration, the battery voltage calculation unit can easily calculate the first battery voltage using the formula (C) based on the first off voltage and the first on voltage.
また、前記第1電池と第2電池とが直列接続されており、前記第2電池の、前記第1電池と接続された極とは異なる極に一端が接続された第2抵抗と、前記第2抵抗の他端に接続された第2導電路と、前記第2導電路と前記第1導電路との間の電圧を検出する第2電圧検出部と、前記第2導電路と前記第1導電路との間に前記基準電流を流すオン状態と、前記基準電流を流さないオフ状態とを切り替え可能な第2放電部とを備え、前記オンオフ電圧取得部は、さらに、前記第2放電部をオフ状態にさせたときに前記第2電圧検出部によって検出された電圧を第2オフ電圧として取得し、前記第2放電部をオン状態にさせたときに前記第2電圧検出部によって検出された電圧を第2オン電圧として取得し、前記電池電圧算出部は、前記第2オフ電圧と前記第2オン電圧とに基づいて、前記第2電池の電池電圧である第2電池電圧をさらに算出することが好ましい。
In addition, the first battery and the second battery are connected in series, a second resistor having one end connected to a pole of the second battery different from the pole connected to the first battery, and the second battery A second conductive path connected to the other end of the two resistors, a second voltage detector for detecting a voltage between the second conductive path and the first conductive path, the second conductive path and the first A second discharge unit capable of switching between an on state in which the reference current flows between the conductive path and an off state in which the reference current does not flow, and the on / off voltage acquisition unit further includes the second discharge unit The voltage detected by the second voltage detector when the battery is turned off is acquired as the second off voltage, and is detected by the second voltage detector when the second discharge part is turned on. And the battery voltage calculation unit obtains the second on-voltage as the second on-voltage. Based on the voltage and the second on-voltage, it is preferable to further calculate the second battery voltage is a battery voltage of the second battery.
この構成によれば、第1電池と第2電池とが直列接続されており、第2電池の、第1電池と接続された極とは異なる極に一端が接続された第2抵抗と、第2抵抗の他端に接続された第2導電路と、第2導電路と第1導電路との間の電圧を検出する第2電圧検出部とを備えた構成において、電池電圧算出部によって、第2オフ電圧と第2オン電圧とに基づいて、リーク故障の影響を除いた本来の第2電池の電池電圧である第2電池電圧をさらに算出することができる。
According to this configuration, the first battery and the second battery are connected in series, the second resistor having one end connected to a pole of the second battery that is different from the pole connected to the first battery, In a configuration including a second conductive path connected to the other end of the two resistors, and a second voltage detection unit that detects a voltage between the second conductive path and the first conductive path, the battery voltage calculation unit Based on the second off voltage and the second on voltage, it is possible to further calculate the second battery voltage that is the original battery voltage of the second battery excluding the influence of the leak failure.
また、前記電池電圧算出部は、前記第1リーク抵抗値がマイナスの値になった場合、下記の式(D)に基づき、前記第1電池電圧Vb(1)を算出することが好ましい。
Vb(1)=Vm(1)off -[Vb(2)×{IcR-(Vm(1)on-Vm(1)off )}/(2IcR)]・・・(D)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
Vb(2):前記第2電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, it is preferable that the battery voltage calculation unit calculates the first battery voltage Vb (1) based on the following formula (D) when the first leakage resistance value becomes a negative value.
Vb (1) = Vm (1) off- [Vb (2) × {IcR- (Vm (1) on-Vm (1) off)} / (2IcR)] (D)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage Vb (2): the second battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current.
Vb(1)=Vm(1)off -[Vb(2)×{IcR-(Vm(1)on-Vm(1)off )}/(2IcR)]・・・(D)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
Vb(2):前記第2電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, it is preferable that the battery voltage calculation unit calculates the first battery voltage Vb (1) based on the following formula (D) when the first leakage resistance value becomes a negative value.
Vb (1) = Vm (1) off- [Vb (2) × {IcR- (Vm (1) on-Vm (1) off)} / (2IcR)] (D)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage Vb (2): the second battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current.
第1リーク抵抗値がマイナスの値になった場合、隣接する回路でリーク故障が発生していると考えられる。この場合、式(C)に基づいて第1電池電圧を算出することができない。そこで、電池電圧算出部は、第1リーク抵抗値がマイナスの値になった場合、式(D)を用いることによって、第1電池電圧Vb(1)を算出することができる。
If the first leak resistance value is negative, it is considered that a leak failure has occurred in the adjacent circuit. In this case, the first battery voltage cannot be calculated based on the formula (C). Therefore, when the first leakage resistance value becomes a negative value, the battery voltage calculation unit can calculate the first battery voltage Vb (1) by using Expression (D).
また、前記第1リーク抵抗値が、予め設定された判定値に満たず、かつ前記第1リーク抵抗値がプラスの値になったとき、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定し、前記第1リーク抵抗値が、前記判定値に満たず、かつ前記第1リーク抵抗値がマイナスの値になったとき、前記第2導電路と前記第1導電路との間にリーク故障が有ると判定する判定部をさらに備えることが好ましい。
Further, when the first leak resistance value does not satisfy a preset determination value and the first leak resistance value becomes a positive value, the first leak resistance value is between the first conductive path and the connection conductive path. When it is determined that there is a leak failure, the first leakage resistance value is less than the determination value, and the first leakage resistance value is a negative value, the second conductive path and the first conductive path It is preferable to further include a determination unit that determines that there is a leak failure between.
この構成によれば、第1リーク抵抗値に基づいて、第1導電路と接続導電路との間、及び第2導電路と第1導電路との間におけるリーク故障の有無を判定することができるので、リーク故障の発生状況を詳細に判定することができる。
According to this configuration, it is possible to determine whether there is a leak failure between the first conductive path and the connection conductive path and between the second conductive path and the first conductive path based on the first leak resistance value. Therefore, it is possible to determine in detail the occurrence status of the leak failure.
また、前記電池電圧算出部は、前記判定部によって、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定された場合、前記第2オフ電圧、前記第2オン電圧、及び前記第1電池電圧に基づいて、前記第2電池電圧を算出することが好ましい。
Further, the battery voltage calculation unit, when the determination unit determines that there is a leak failure between the first conductive path and the connection conductive path, the second off voltage, the second on voltage, Preferably, the second battery voltage is calculated based on the first battery voltage.
第2電池に対して隣接する回路である第1導電路と接続導電路との間にリーク故障が有る場合、第2オフ電圧及び第2オン電圧が隣接する回路のリーク故障の影響を受けるため、第2オフ電圧及び第2オン電圧に基づいて第2電池電圧を算出すると、第2電池電圧の算出精度が低下する。そこで、この構成によれば、第1導電路と接続導電路との間にリーク故障が有る場合、第2オフ電圧及び第2オン電圧に加えて、第1電池電圧に基づいて、第2電池電圧を算出することで、第2電池電圧の算出精度が向上する。
When there is a leak failure between the first conductive path and the connection conductive path that are adjacent to the second battery, the second off voltage and the second on voltage are affected by the leak fault of the adjacent circuit. If the second battery voltage is calculated based on the second off voltage and the second on voltage, the calculation accuracy of the second battery voltage decreases. Therefore, according to this configuration, when there is a leak failure between the first conductive path and the connection conductive path, the second battery is based on the first battery voltage in addition to the second off voltage and the second on voltage. By calculating the voltage, the calculation accuracy of the second battery voltage is improved.
また、前記電池電圧算出部は、前記判定部によって、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定された場合、下記の式(E)に基づき、前記第2電池電圧Vb(2)を算出することが好ましい。
Vb(2)=Vm(2)off -Vb(1) ×[{2IcR-(Vm(2)off-Vm(2)on )}/(IcR)]・・・(E)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
Vb(1):前記第1電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, when the determination unit determines that there is a leak failure between the first conductive path and the connection conductive path, the battery voltage calculation unit is configured to calculate the second voltage based on the following formula (E). It is preferable to calculate the battery voltage Vb (2).
Vb (2) = Vm (2) off−Vb (1) × [{2IcR− (Vm (2) off−Vm (2) on)} / (IcR)] (E)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage Vb (1): the first battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current.
Vb(2)=Vm(2)off -Vb(1) ×[{2IcR-(Vm(2)off-Vm(2)on )}/(IcR)]・・・(E)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
Vb(1):前記第1電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Further, when the determination unit determines that there is a leak failure between the first conductive path and the connection conductive path, the battery voltage calculation unit is configured to calculate the second voltage based on the following formula (E). It is preferable to calculate the battery voltage Vb (2).
Vb (2) = Vm (2) off−Vb (1) × [{2IcR− (Vm (2) off−Vm (2) on)} / (IcR)] (E)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage Vb (1): the first battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current.
この構成によれば、第1導電路と接続導電路との間にリーク故障が有ると判定された場合、電池電圧算出部は、式(E)を用いることによって、精度よく第2電池電圧Vb(2)を算出することができる。
According to this configuration, when it is determined that there is a leak failure between the first conductive path and the connection conductive path, the battery voltage calculation unit accurately uses the expression (E) to accurately calculate the second battery voltage Vb. (2) can be calculated.
また、前記判定部は、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定した場合、前記第2オフ電圧と前記第2オン電圧とに基づいて前記第1導電路と前記接続導電路との間の抵抗値を第1演算抵抗値として算出し、前記第1演算抵抗値と前記第1リーク抵抗値とが実質的に等しくない場合、リーク故障が複数生じていると判定することが好ましい。
In addition, when the determination unit determines that there is a leakage failure between the first conductive path and the connection conductive path, the first conductive path is based on the second off voltage and the second on voltage. When the resistance value between the first conductive resistance value and the connection conductive path is calculated as a first calculated resistance value, and the first calculated resistance value and the first leak resistance value are not substantially equal, a plurality of leak failures have occurred. Is preferably determined.
リーク故障が1箇所であれば、第1オフ電圧と第1オン電圧とに基づいて算出された第1リーク抵抗値と、第2オフ電圧と第2オン電圧とに基づいて算出された第1演算抵抗値とは、実質的に等しくなるはずである。そこでこの構成によれば、判定部は、第1演算抵抗値と第1リーク抵抗値とが実質的に等しくない場合、リーク故障が複数生じていると判定することができる。
If there is one leak failure, the first leak resistance value calculated based on the first off voltage and the first on voltage, the first value calculated based on the second off voltage, and the second on voltage. The calculated resistance value should be substantially equal. Therefore, according to this configuration, the determination unit can determine that a plurality of leak failures have occurred when the first calculation resistance value and the first leak resistance value are not substantially equal.
また、前記判定部は、下記の式(F)に基づき、前記第1演算抵抗値rc(1)を算出することが好ましい。
rc(1)=[{-3IcR+2(Vm(2)off-Vm(2)on)}/{2IcR-(Vm(2)off-Vm(2)on)}]×R・・・(F)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Moreover, it is preferable that the determination unit calculates the first calculation resistance value rc (1) based on the following formula (F).
rc (1) = [{-3IcR + 2 (Vm (2) off-Vm (2) on)} / {2IcR- (Vm (2) off-Vm (2) on)}] × R (F)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage R: the resistance value Ic of the first resistor, the second resistor, and the connection resistor: the current value of the reference current.
rc(1)=[{-3IcR+2(Vm(2)off-Vm(2)on)}/{2IcR-(Vm(2)off-Vm(2)on)}]×R・・・(F)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値。 Moreover, it is preferable that the determination unit calculates the first calculation resistance value rc (1) based on the following formula (F).
rc (1) = [{-3IcR + 2 (Vm (2) off-Vm (2) on)} / {2IcR- (Vm (2) off-Vm (2) on)}] × R (F)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage R: the resistance value Ic of the first resistor, the second resistor, and the connection resistor: the current value of the reference current.
この構成によれば、判定部は、式(F)を用いることによって、第2オフ電圧と第2オン電圧とに基づいて第1演算抵抗値を算出することができる。
According to this configuration, the determination unit can calculate the first calculation resistance value based on the second off voltage and the second on voltage by using the equation (F).
また、前記電池電圧算出部は、前記判定部によってリーク故障が複数生じていると判定された場合、前記第2電池電圧の算出を実行しないことが好ましい。
The battery voltage calculation unit preferably does not calculate the second battery voltage when the determination unit determines that a plurality of leak failures have occurred.
この構成によれば、リーク故障が複数生じているために、第2電池電圧を精度よく算出できないときは、電池電圧算出部は、第2電池電圧の算出を実行しないので、誤った第2電池電圧が算出されるおそれが低減される。
According to this configuration, when the second battery voltage cannot be accurately calculated due to a plurality of leak failures, the battery voltage calculation unit does not calculate the second battery voltage, so that the erroneous second battery The possibility that the voltage is calculated is reduced.
また、本発明に係る電池電源装置は、上述のリーク処理装置と、前記第1電池とを備える。
Further, a battery power supply device according to the present invention includes the above-described leak processing device and the first battery.
また、本発明に係る電池電源装置は、上述のリーク処理装置と、前記第1電池と、前記第2電池とを備える。
Also, a battery power supply device according to the present invention includes the above-described leak processing device, the first battery, and the second battery.
これらの構成によれば、上述のリーク処理装置と同様の効果が得られる。
According to these configurations, the same effect as the above-described leak processing apparatus can be obtained.
このような構成のリーク処理装置、及び電池電源装置は、第1オフ電圧と第1オン電圧とに基づいて、第1導電路と接続導電路との間の抵抗値や、リーク故障の影響を除いた本来の第1電池の電池電圧である第1電池電圧を算出することが可能となる。そこで、リーク情報算出部によって、第1オフ電圧と第1オン電圧とに基づいて、第1導電路と接続導電路との間の抵抗値及び第1電池電圧のうち少なくとも一方を算出することによって、リーク故障に対処することができる。
Based on the first off voltage and the first on voltage, the leakage processing device and the battery power supply device having such a configuration can affect the resistance value between the first conductive path and the connection conductive path and the influence of the leak failure. It becomes possible to calculate the first battery voltage, which is the original battery voltage of the first battery removed. Therefore, by calculating at least one of the resistance value between the first conductive path and the connection conductive path and the first battery voltage based on the first off voltage and the first on voltage by the leak information calculation unit. Can deal with leak failure.
以下、本発明に係る実施形態を図面に基づいて説明する。なお、各図において同一の符号を付した構成は、同一の構成であることを示し、その説明を省略する。図1は、本発明の一実施形態に係るリーク処理装置を用いた電池電源装置の構成の一例を示すブロック図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted. FIG. 1 is a block diagram showing an example of the configuration of a battery power supply device using a leak processing apparatus according to an embodiment of the present invention.
図1に示す電池電源装置1は、リーク処理装置2と、組電池3と、接続端子11,12,13とを備えて構成されている。組電池3は、例えば、n個の電池B1,B2,B3,・・・,Bnが同一極性方向に直列接続されて構成されている。以下、電池B1~Bnを、それぞれ総称して電池Bと称する。
A battery power supply device 1 shown in FIG. 1 includes a leak treatment device 2, an assembled battery 3, and connection terminals 11, 12, and 13. The assembled battery 3 includes, for example, n batteries B1, B2, B3,..., Bn connected in series in the same polarity direction. Hereinafter, the batteries B1 to Bn are collectively referred to as a battery B, respectively.
電池Bは、例えばNi-MH電池やLi-ion電池等の二次電池である。電池B1~Bnのそれぞれは、単セルであってもよく、複数のセルが組み合わされた電池ブロックであってもよい。
Battery B is a secondary battery such as a Ni-MH battery or a Li-ion battery. Each of the batteries B1 to Bn may be a single cell or a battery block in which a plurality of cells are combined.
接続端子11,12,13は、図略の外部機器と接続するための接続端子である。外部機器は、例えば組電池3を充電する充電装置や、組電池3からの電力供給を受けて動作する負荷回路等である。外部機器は、例えば、携帯型パーソナルコンピュータやデジタルカメラ、携帯電話機等の電子機器であってもよく、電気自動車やハイブリッドカー等の車両、等の電池搭載機器システムの本体部分であってもよく、例えば太陽光発電装置や風力発電装置等の発電装置であってもよい。
Connection terminals 11, 12, and 13 are connection terminals for connecting to external devices (not shown). The external device is, for example, a charging device that charges the assembled battery 3 or a load circuit that operates by receiving power supply from the assembled battery 3. The external device may be, for example, an electronic device such as a portable personal computer, a digital camera, or a mobile phone, or a main body part of a battery-equipped device system such as a vehicle such as an electric vehicle or a hybrid car. For example, a power generation device such as a solar power generation device or a wind power generation device may be used.
組電池3の正極、すなわち電池Bnの正極には、接続端子11が接続されている。また、組電池3の負極、すなわち電池B1の負極には、接続端子12が接続されている。接続端子13は、通信用の接続端子である。
The connection terminal 11 is connected to the positive electrode of the assembled battery 3, that is, the positive electrode of the battery Bn. A connection terminal 12 is connected to the negative electrode of the assembled battery 3, that is, the negative electrode of the battery B1. The connection terminal 13 is a connection terminal for communication.
電池電源装置1は、上述のような外部機器と接続端子11,12,13によって接続されることにより、接続端子11,12を介して組電池3を充放電させる。また、電池電源装置1は、電池B1~Bnの電池電圧Vb(1)~Vb(n)を示す情報や、リーク故障に関する情報を、接続端子13を介して外部機器へ送信するようになっている。
The battery power supply device 1 charges and discharges the assembled battery 3 through the connection terminals 11 and 12 by being connected to the external device as described above through the connection terminals 11, 12, and 13. Further, the battery power supply device 1 is configured to transmit information indicating the battery voltages Vb (1) to Vb (n) of the batteries B1 to Bn and information related to a leak failure to an external device via the connection terminal 13. Yes.
リーク処理装置2は、制御部21、電圧検出部U1~Un、通信IF(interface)24、抵抗R0~Rn、コンデンサC1~Cn、及び放電部D1~Dnを備えている。放電部D1(第1放電部)は、定電流源PS1とスイッチング素子SW1との直列回路である。放電部D2(第2放電部)は、定電流源PS2とスイッチング素子SW2との直列回路である。以下、同様に、放電部Dnは、定電流源PSnとスイッチング素子SWnとの直列回路である。
The leak processing apparatus 2 includes a control unit 21, voltage detection units U1 to Un, a communication IF (interface) 24, resistors R0 to Rn, capacitors C1 to Cn, and discharge units D1 to Dn. The discharge part D1 (first discharge part) is a series circuit of a constant current source PS1 and a switching element SW1. The discharge part D2 (second discharge part) is a series circuit of the constant current source PS2 and the switching element SW2. Hereinafter, similarly, the discharge part Dn is a series circuit of the constant current source PSn and the switching element SWn.
以下、電圧検出部U1~Un、コンデンサC1~Cn、放電部D1~Dn、定電流源PS1~PSn、及びスイッチング素子SW1~SWnを、それぞれ総称して電圧検出部U、コンデンサC、放電部D、定電流源PS、及びスイッチング素子SWと称する。
Hereinafter, the voltage detection units U1 to Un, the capacitors C1 to Cn, the discharge units D1 to Dn, the constant current sources PS1 to PSn, and the switching elements SW1 to SWn are collectively referred to as the voltage detection unit U, the capacitor C, and the discharge unit D, respectively. , Constant current source PS, and switching element SW.
電池B1(第1電池)の負極は、抵抗R0(接続抵抗)の一端に接続されている。抵抗R0の他端は、導電路L(0)(接続導電路)を介して電圧検出部U1に接続されている。電池B1の正極と電池B2(第2電池)の負極との接続点P1は、抵抗R1(第1抵抗)の一端に接続されている。抵抗R1の他端は、導電路L(1)(第1導電路)を介して電圧検出部U1(第1電圧検出部)と電圧検出部U2(第2電圧検出部)とに接続されている。
The negative electrode of the battery B1 (first battery) is connected to one end of a resistor R0 (connection resistor). The other end of the resistor R0 is connected to the voltage detection unit U1 via a conductive path L (0) (connection conductive path). A connection point P1 between the positive electrode of the battery B1 and the negative electrode of the battery B2 (second battery) is connected to one end of the resistor R1 (first resistor). The other end of the resistor R1 is connected to a voltage detection unit U1 (first voltage detection unit) and a voltage detection unit U2 (second voltage detection unit) via a conductive path L (1) (first conductive path). Yes.
また、電池B2の正極と電池B3の負極との接続点P2は、抵抗R2(第2抵抗)の一端に接続されている。抵抗R2の他端は、導電路L(2)(第2導電路)を介して電圧検出部U2,U3に接続されている。
Further, the connection point P2 between the positive electrode of the battery B2 and the negative electrode of the battery B3 is connected to one end of the resistor R2 (second resistor). The other end of the resistor R2 is connected to the voltage detection units U2 and U3 via a conductive path L (2) (second conductive path).
以下同様に、電池Bn-1の正極と電池Bnの負極との接続点Pn-1は、抵抗Rn-1の一端に接続されている。抵抗Rn-1の他端は、導電路L(n-1)を介して電圧検出部Un-2,Un-1に接続されている。電池Bnの正極は、抵抗Rnの一端に接続されている。抵抗Rnの他端は、導電路L(n)を介して電圧検出部Unに接続されている。
Similarly, the connection point Pn-1 between the positive electrode of the battery Bn-1 and the negative electrode of the battery Bn is connected to one end of the resistor Rn-1. The other end of the resistor Rn-1 is connected to the voltage detectors Un-2 and Un-1 via a conductive path L (n-1). The positive electrode of the battery Bn is connected to one end of the resistor Rn. The other end of the resistor Rn is connected to the voltage detector Un through a conductive path L (n).
コンデンサC1の一端は導電路L(0)に接続され、コンデンサC1の他端は導電路L(1)に接続されている。コンデンサC2の一端は導電路L(1)に接続され、コンデンサC2の他端は導電路L(2)に接続されている。コンデンサC3の一端は導電路L(2)に接続され、コンデンサC3の他端は導電路L(3)に接続されている。以下同様に、コンデンサCnの一端は導電路L(n-1)に接続され、コンデンサCnの他端は導電路L(n)に接続されている。
One end of the capacitor C1 is connected to the conductive path L (0), and the other end of the capacitor C1 is connected to the conductive path L (1). One end of the capacitor C2 is connected to the conductive path L (1), and the other end of the capacitor C2 is connected to the conductive path L (2). One end of the capacitor C3 is connected to the conductive path L (2), and the other end of the capacitor C3 is connected to the conductive path L (3). Similarly, one end of the capacitor Cn is connected to the conductive path L (n-1), and the other end of the capacitor Cn is connected to the conductive path L (n).
導電路L(0)は放電部D1を介して導電路L(1)と接続されている。導電路L(1)は放電部D2を介して導電路L(2)と接続されている。導電路L(2)は放電部D3を介して導電路L(3)と接続されている。以下同様に、導電路L(n-1)は放電部Dnを介して導電路L(n)と接続されている。
The conductive path L (0) is connected to the conductive path L (1) through the discharge part D1. The conductive path L (1) is connected to the conductive path L (2) through the discharge part D2. The conductive path L (2) is connected to the conductive path L (3) through the discharge part D3. Similarly, the conductive path L (n-1) is connected to the conductive path L (n) through the discharge part Dn.
なお、電池B1,B2、抵抗R0、抵抗R1、導電路L(0)、導電路L(1)、放電部D1、放電部D2、電圧検出部U1、及び電圧検出部U2が、それぞれ請求項における第1,第2電池、接続抵抗、第1抵抗、接続導電路、第1導電路、第1放電部、第2放電部、第1電圧検出部、及び第2電圧検出部に対応する例を示したが、例えば、電池Bn-1を第1電池、電池Bnを第2電池とすると、抵抗Rn-2、抵抗Rn-1、導電路L(n-2)、導電路L(n-1)、放電部Dn-1、放電部Dn、電圧検出部Un-1、及び電圧検出部Unが、それぞれ請求項における接続抵抗、第1抵抗、接続導電路、第1導電路、第1放電部、第2放電部、第1電圧検出部、及び第2電圧検出部に対応する。
The batteries B1, B2, the resistor R0, the resistor R1, the conductive path L (0), the conductive path L (1), the discharge part D1, the discharge part D2, the voltage detection part U1, and the voltage detection part U2 are claimed respectively. Corresponding to the first and second batteries, connection resistance, first resistance, connection conductive path, first conductive path, first discharge unit, second discharge unit, first voltage detection unit, and second voltage detection unit For example, when the battery Bn-1 is the first battery and the battery Bn is the second battery, the resistor Rn-2, the resistor Rn-1, the conductive path L (n-2), the conductive path L (n- 1), the discharge unit Dn-1, the discharge unit Dn, the voltage detection unit Un-1, and the voltage detection unit Un are respectively connected resistance, first resistance, connection conductive path, first conductive path, and first discharge. , A second discharge unit, a first voltage detection unit, and a second voltage detection unit.
あるいは、電池Bnを第1電池、電池Bn-1を第2電池とし、抵抗Rn、抵抗Rn-1、導電路L(n)、導電路L(n-1)、放電部Dn、放電部Dn-1、電圧検出部Un、及び電圧検出部Un-1を、それぞれ請求項における接続抵抗、第1抵抗、接続導電路、第1導電路、第1放電部、第2放電部、第1電圧検出部、及び第2電圧検出部に対応させてもよい。
Alternatively, the battery Bn is the first battery and the battery Bn-1 is the second battery, and the resistor Rn, the resistor Rn-1, the conductive path L (n), the conductive path L (n-1), the discharge part Dn, and the discharge part Dn -1, voltage detection unit Un, and voltage detection unit Un-1, respectively, are connected resistance, first resistance, connection conductive path, first conductive path, first discharge part, second discharge part, first voltage in claims You may make it respond | correspond to a detection part and a 2nd voltage detection part.
電圧検出部U1~Unは、それぞれ、例えばアナログデジタルコンバータ等の電圧検出回路を用いて構成されている。電圧検出部U1は、導電路L(0)と導電路L(1)との間の電圧を検出電圧Vm(1)として検出する。電圧検出部U2は、導電路L(1)と導電路L(2)との間の電圧を検出電圧Vm(2)として検出する。電圧検出部U3は、導電路L(2)と導電路L(3)との間の電圧を検出電圧Vm(3)として検出する。以下同様に、電圧検出部Unは、導電路L(n-1)と導電路L(n)との間の電圧を検出電圧Vm(n)として検出する。
The voltage detectors U1 to Un are each configured using a voltage detection circuit such as an analog-digital converter. The voltage detection unit U1 detects a voltage between the conductive path L (0) and the conductive path L (1) as a detection voltage Vm (1). The voltage detection unit U2 detects a voltage between the conductive path L (1) and the conductive path L (2) as a detection voltage Vm (2). The voltage detection unit U3 detects a voltage between the conductive path L (2) and the conductive path L (3) as a detection voltage Vm (3). Similarly, the voltage detection unit Un detects the voltage between the conductive path L (n-1) and the conductive path L (n) as the detection voltage Vm (n).
抵抗R0~Rn及びコンデンサC1~Cnは、フィルタ回路を構成している。そして、抵抗R0~Rn及びコンデンサC1~Cnは、電池電圧Vb(1)~Vb(n)から、高周波のノイズ成分を除去する。
Resistors R0 to Rn and capacitors C1 to Cn constitute a filter circuit. The resistors R0 to Rn and the capacitors C1 to Cn remove high frequency noise components from the battery voltages Vb (1) to Vb (n).
スイッチング素子SW1~SWnは、例えばFET(Field Effect Transistor)等のトランジスタやリレースイッチで構成されている。スイッチング素子SW1~SWnは、それぞれ制御部21からの制御信号に応じてオン、オフする。
The switching elements SW1 to SWn are composed of transistors such as FETs (Field-Effect-Transistors) and relay switches, for example. The switching elements SW1 to SWn are turned on and off in response to control signals from the control unit 21, respectively.
定電流源PS1~PSnは、所定の基準電流値Icの基準電流を流す定電流回路である。なお、定電流源PS1~PSnの代わりに、予め設定された基準抵抗値の抵抗を用いてもよい。
The constant current sources PS1 to PSn are constant current circuits for supplying a reference current having a predetermined reference current value Ic. A resistor having a preset reference resistance value may be used instead of the constant current sources PS1 to PSn.
そして、放電部D1~Dnは、スイッチング素子SW1~SWnがオンすることにより対応する導電路間に基準電流値Icの基準電流を流すオン状態となり、スイッチング素子SW1~SWnがオフすることにより基準電流を流さないオフ状態となる。
The discharge units D1 to Dn are turned on so that the reference current of the reference current value Ic flows between the corresponding conductive paths when the switching elements SW1 to SWn are turned on, and the reference currents are turned off when the switching elements SW1 to SWn are turned off. It will be in the off state that does not flow.
なお、放電部D1~Dnは、スイッチング素子SW1~SWnを備えず、定電流源PS1~PSnが、それぞれ制御部21からの制御信号に応じて基準電流値Icの基準電流を流すオン状態と、基準電流を流さないオフ状態とに切り替わる構成としてもよい。
The discharge units D1 to Dn do not include the switching elements SW1 to SWn, and the constant current sources PS1 to PSn are in an on state in which the reference current of the reference current value Ic flows according to the control signal from the control unit 21, respectively. It is good also as a structure switched to the OFF state which does not flow a reference current.
制御部21は、例えば所定の演算処理を実行するCPU(Central Processing Unit)と、所定の制御プログラムが記憶されたROM(Read Only Memory)と、データを一時的に記憶するRAM(Random Access Memory)と、これらの周辺回路等とを備えて構成されている。
The control unit 21 includes, for example, a CPU (Central Processing Unit) that executes predetermined arithmetic processing, a ROM (Read Only Memory) that stores a predetermined control program, and a RAM (Random Access Memory) that temporarily stores data. And these peripheral circuits and the like.
そして、制御部21は、ROMに記憶された制御プログラムを実行することにより、オンオフ電圧取得部211、リーク情報算出部212、及び判定部215として機能する。また、リーク情報算出部212は、リーク抵抗算出部213及び電池電圧算出部214を含む。
And the control part 21 functions as the on-off voltage acquisition part 211, the leak information calculation part 212, and the determination part 215 by executing the control program memorize | stored in ROM. The leak information calculation unit 212 includes a leak resistance calculation unit 213 and a battery voltage calculation unit 214.
オンオフ電圧取得部211は、スイッチング素子SW1~SWnをオフさせた状態で、電圧検出部U1~Unによって検出された検出電圧Vm(1)~Vm(n)を、それぞれオフ電圧Vm(1)off~Vm(n)offとして取得する。また、オンオフ電圧取得部211は、スイッチング素子SW1~SWnをオンさせた状態で、電圧検出部U1~Unによって検出された検出電圧Vm(1)~Vm(n)を、それぞれオン電圧Vm(1)on~Vm(n)onとして取得する。
The on / off voltage acquisition unit 211 converts the detection voltages Vm (1) to Vm (n) detected by the voltage detection units U1 to Un into the off voltage Vm (1) off with the switching elements SW1 to SWn turned off. Obtained as ~ Vm (n) off. The on / off voltage acquisition unit 211 converts the detection voltages Vm (1) to Vm (n) detected by the voltage detection units U1 to Un into the on voltage Vm (1) with the switching elements SW1 to SWn turned on. ) Acquired as on to Vm (n) on.
リーク抵抗算出部213は、オンオフ電圧取得部211によって取得されたオフ電圧Vm(1)off~Vm(n)off及びオン電圧Vm(1)on~Vm(n)onに基づいて、それぞれ対応する導電路間の抵抗値であるリーク抵抗値rv(1)~rv(n)を算出する。
The leak resistance calculation unit 213 responds based on the off voltages Vm (1) off to Vm (n) off and the on voltages Vm (1) on to Vm (n) on acquired by the on / off voltage acquisition unit 211, respectively. Leakage resistance values rv (1) to rv (n) that are resistance values between the conductive paths are calculated.
電池電圧算出部214は、オンオフ電圧取得部211によって取得されたオフ電圧Vm(1)off~Vm(n)off及びオン電圧Vm(1)on~Vm(n)onに基づいて、それぞれ対応する電池Bの電池電圧Vb(1)~Vb(n)を算出する。
The battery voltage calculation unit 214 responds based on the off voltages Vm (1) off to Vm (n) off and the on voltages Vm (1) on to Vm (n) on acquired by the on / off voltage acquisition unit 211, respectively. Battery voltages Vb (1) to Vb (n) of the battery B are calculated.
判定部215は、リーク抵抗算出部213によって算出されたリーク抵抗値rv(1)~rv(n)に基づいて、リーク故障の有無を判定する。
The determination unit 215 determines whether there is a leak failure based on the leak resistance values rv (1) to rv (n) calculated by the leak resistance calculation unit 213.
通信IF24は、例えば電池電圧算出部214によって算出された電池電圧Vb(1)~Vb(n)を示す情報や、リーク抵抗算出部213によって算出されたリーク抵抗値rv(1)~rv(n)等、リーク故障に関する情報を、接続端子13を介して外部機器へ送信する通信インターフェイス回路である。
The communication IF 24, for example, shows information indicating the battery voltages Vb (1) to Vb (n) calculated by the battery voltage calculator 214, and leak resistance values rv (1) to rv (n) calculated by the leak resistance calculator 213. ) And the like, which is a communication interface circuit that transmits information related to a leak failure to an external device via the connection terminal 13.
次に、図1に示す電池電源装置1の動作について説明する。図2、図3、図4は、電池電源装置1の動作の一例を示すフローチャートである。まず、オンオフ電圧取得部211は、初期処理として、変数iに1を代入する(ステップS1)。
Next, the operation of the battery power supply device 1 shown in FIG. 1 will be described. 2, 3, and 4 are flowcharts illustrating an example of the operation of the battery power supply device 1. First, the on / off voltage acquisition unit 211 assigns 1 to a variable i as an initial process (step S1).
次に、オンオフ電圧取得部211は、スイッチング素子SW1をオフさせた状態で、電圧検出部U1によって検出された検出電圧Vm(1)を、オフ電圧Vm(1)offとして取得する(ステップS2)。
Next, the on / off voltage acquisition unit 211 acquires, as the off voltage Vm (1) off, the detection voltage Vm (1) detected by the voltage detection unit U1 with the switching element SW1 turned off (step S2). .
次に、オンオフ電圧取得部211は、スイッチング素子SW1をオンさせ、定電流源PS1によって基準電流値Icの電流を流させた状態で、電圧検出部U1によって検出された検出電圧Vm(1)を、オン電圧Vm(1)onとして取得する(ステップS3)。オン電圧Vm(1)onの取得後、オンオフ電圧取得部211は、スイッチング素子SW1をオフさせる。
Next, the on / off voltage acquisition unit 211 turns on the switching element SW1 and applies the detection voltage Vm (1) detected by the voltage detection unit U1 in a state where the current of the reference current value Ic is caused to flow by the constant current source PS1. And obtained as an on-voltage Vm (1) on (step S3). After acquiring the on-voltage Vm (1) on, the on-off voltage acquiring unit 211 turns off the switching element SW1.
次に、リーク抵抗算出部213は、オンオフ電圧取得部211によって取得された、オフ電圧Vm(1)off、オン電圧Vm(1)on、及び下記の式(1)に基づき、リーク抵抗値rv(1)を算出する(ステップS4)。式(1)は、請求項における式(A)に相当している。
Next, the leak resistance calculation unit 213 calculates the leak resistance value rv based on the off voltage Vm (1) off, the on voltage Vm (1) on acquired by the on / off voltage acquisition unit 211, and the following equation (1). (1) is calculated (step S4). Expression (1) corresponds to expression (A) in the claims.
rv(1)={2R(Vm(1)off-Vm(1)on)}/{2IcR-(Vm(1)off-Vm(1)on)}・・・(1)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rv (1) = {2R (Vm (1) off-Vm (1) on)} / {2IcR- (Vm (1) off-Vm (1) on)} (1)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rv (1) = {2R (Vm (1) off-Vm (1) on)} / {2IcR- (Vm (1) off-Vm (1) on)} (1)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
なお、放電部D1~Dnが、スイッチング素子SW1~SWnと基準抵抗との直列回路であった場合、リーク抵抗算出部213は、オン電圧Vm(1)on~Vm(n)onを、予め設定された基準抵抗の抵抗値で除算することによって、それぞれ対応する基準電流値Icを算出してもよい。
When the discharge units D1 to Dn are series circuits of switching elements SW1 to SWn and a reference resistance, the leak resistance calculation unit 213 sets the on voltages Vm (1) on to Vm (n) on in advance. The corresponding reference current value Ic may be calculated by dividing by the resistance value of the reference resistance.
次に、判定部215は、リーク抵抗算出部213によって算出されたリーク抵抗値rv(1)を、予め設定された判定値Raと比較する(ステップS5)。
Next, the determination unit 215 compares the leak resistance value rv (1) calculated by the leak resistance calculation unit 213 with a predetermined determination value Ra (step S5).
判定値Raとしては、充分大きな抵抗値にされている。例えばコンデンサC1~Cnや図略の保護素子等がハーフショートするなどして各導電路間にリークが発生しても、そのリーク抵抗の抵抗値が判定値Raであった場合に生じる電池電圧Vb(1)~Vb(n)の検出誤差、即ち電池電圧Vb(1)~Vb(n)とオフ電圧Vm(1)off~Vm(n)offとの差が、無視できるような抵抗値の値が、判定値Raとして設定されている。
The judgment value Ra is set to a sufficiently large resistance value. For example, even if the capacitors C1 to Cn, the protective elements (not shown), etc. are short-circuited and a leakage occurs between the conductive paths, the battery voltage Vb generated when the resistance value of the leakage resistance is the determination value Ra. (1) to Vb (n) detection error, that is, the difference between the battery voltage Vb (1) to Vb (n) and the off voltage Vm (1) off to Vm (n) off has a resistance value that can be ignored. The value is set as the determination value Ra.
具体的には、例えば抵抗値Rが10kΩであった場合に、判定値Raは、例えば1MΩ~10MΩ程度とされる。
Specifically, for example, when the resistance value R is 10 kΩ, the determination value Ra is, for example, about 1 MΩ to 10 MΩ.
そして、リーク抵抗値rv(1)が、判定値Ra以上の場合(ステップS5でYES)、判定部215は、導電路L(0),L(1)間にリーク故障が無く、かつ導電路L(1),L(2)間にもリーク故障が無いと判定する(ステップS6)。
If the leak resistance value rv (1) is equal to or greater than the determination value Ra (YES in step S5), the determination unit 215 has no leakage failure between the conductive paths L (0) and L (1), and the conductive path It is determined that there is no leak failure between L (1) and L (2) (step S6).
この場合、電圧検出部U1は、電池B1の電池電圧Vb(1)を正しく検出することができるので、電池電圧算出部214は、電圧検出部U1によって検出されたオフ電圧Vm(1)offを、電池電圧Vb(1)として取得し(ステップS7)、ステップS21へ移行する。
In this case, since the voltage detector U1 can correctly detect the battery voltage Vb (1) of the battery B1, the battery voltage calculator 214 uses the off voltage Vm (1) off detected by the voltage detector U1. The battery voltage Vb (1) is acquired (step S7), and the process proceeds to step S21.
一方、ステップS5において、リーク抵抗値rv(1)が、判定値Raに満たない場合(ステップS5でNO)、判定部215は、リーク抵抗値rv(1)を0と比較する(ステップS8)。そして、リーク抵抗値rv(1)が0を超え、プラスの値である場合(ステップS8でYES)、判定部215は、導電路L(0),L(1)間にリーク故障が有り、かつ導電路L(1),L(2)間にはリーク故障が無いと判定する(ステップS9)。
On the other hand, when the leak resistance value rv (1) is less than the determination value Ra in step S5 (NO in step S5), the determination unit 215 compares the leak resistance value rv (1) with 0 (step S8). . If the leak resistance value rv (1) exceeds 0 and is a positive value (YES in step S8), the determination unit 215 has a leak failure between the conductive paths L (0) and L (1). In addition, it is determined that there is no leak failure between the conductive paths L (1) and L (2) (step S9).
導電路L(0),L(1)間にリーク故障が有る場合、スイッチング素子SW1がオフしていても、電池B1の放電電流が、リーク故障箇所(例えばコンデンサC1)を介して抵抗R1,R0を流れる結果、抵抗R1,R0で電圧降下が生じる。そのため、この状態で電圧検出部U1によって検出された検出電圧Vm(1)すなわちオフ電圧Vm(1)offには、抵抗R1,R0の電圧降下が含まれることになる結果、電池電圧Vb(1)との間に誤差が生じる。
When there is a leak failure between the conductive paths L (0) and L (1), even if the switching element SW1 is turned off, the discharge current of the battery B1 is connected to the resistor R1, via the leak failure location (for example, the capacitor C1). As a result of flowing through R0, a voltage drop occurs at resistors R1 and R0. Therefore, the detection voltage Vm (1) detected by the voltage detection unit U1 in this state, that is, the off voltage Vm (1) off includes the voltage drop of the resistors R1 and R0. As a result, the battery voltage Vb (1 ).
そこで、電池電圧算出部214は、オフ電圧Vm(1)off、オン電圧Vm(1)on、及び下記の式(2)に基づき、電池電圧Vb(1)を算出する(ステップS10)。式(2)は、請求項における式(C)に相当している。
Therefore, the battery voltage calculation unit 214 calculates the battery voltage Vb (1) based on the off voltage Vm (1) off, the on voltage Vm (1) on, and the following equation (2) (step S10). Expression (2) corresponds to expression (C) in the claims.
Vb(1)=2IcR×Vm(1)off/(Vm(1)off-Vm(1)on)・・・(2)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (1) = 2IcR × Vm (1) off / (Vm (1) off−Vm (1) on) (2)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (1) = 2IcR × Vm (1) off / (Vm (1) off−Vm (1) on) (2)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
ステップS10の処理により、電池電圧算出部214は、導電路L(0),L(1)間にリーク故障が生じている場合であっても、精度よく電池電圧Vb(1)を算出することができる。
By the processing in step S10, the battery voltage calculation unit 214 calculates the battery voltage Vb (1) with high accuracy even when a leak failure occurs between the conductive paths L (0) and L (1). Can do.
一方、ステップS8において、リーク抵抗値rv(1)が0以下の値、例えばマイナスの値である場合(ステップS8でNO)、判定部215は、導電路L(0),L(1)間にはリーク故障が無く、かつ導電路L(1),L(2)間にリーク故障が有ると判定する(ステップS11)。導電路L(1),L(2)間にリーク故障が有る場合、現時点では電池電圧Vb(1)を算出することができない(後述するステップS38で算出される)ので、電池電圧算出部214は、電池電圧Vb(1)を算出することなくステップS21へ移行する。
On the other hand, in step S8, when the leak resistance value rv (1) is a value equal to or less than 0, for example, a negative value (NO in step S8), the determination unit 215 determines whether the current between the conductive paths L (0) and L (1). It is determined that there is no leak failure and that there is a leak failure between the conductive paths L (1) and L (2) (step S11). If there is a leak failure between the conductive paths L (1) and L (2), the battery voltage Vb (1) cannot be calculated at this time (calculated in step S38, which will be described later). Shifts to step S21 without calculating the battery voltage Vb (1).
ステップS21において、オンオフ電圧取得部211は、変数iに1を加算する(ステップS21)。次に、オンオフ電圧取得部211は、スイッチング素子SWiをオフさせた状態で、電圧検出部Uiによって検出された検出電圧Vm(i)を、オフ電圧Vm(i)offとして取得する(ステップS22)。
In step S21, the on / off voltage acquisition unit 211 adds 1 to the variable i (step S21). Next, the on / off voltage acquisition unit 211 acquires the detection voltage Vm (i) detected by the voltage detection unit Ui as the off voltage Vm (i) off in a state where the switching element SWi is turned off (step S22). .
次に、オンオフ電圧取得部211は、スイッチング素子SWiをオンさせ、定電流源PSiによって基準電流値Icの電流を流させた状態で、電圧検出部Uiによって検出された検出電圧Vm(i)を、オン電圧Vm(i)onとして取得する(ステップS23)。オン電圧Vm(i)onの取得後、オンオフ電圧取得部211は、スイッチング素子SWiをオフさせる。
Next, the on / off voltage acquisition unit 211 turns on the switching element SWi and supplies the detection voltage Vm (i) detected by the voltage detection unit Ui in a state where the current of the reference current value Ic is caused to flow by the constant current source PSi. And obtained as an on-voltage Vm (i) on (step S23). After acquiring the on-voltage Vm (i) on, the on-off voltage acquisition unit 211 turns off the switching element SWi.
次に、判定部215は、導電路L(i-2),L(i-1)間にリーク故障が生じているか否かを確認する(ステップS24)。具体的には、判定部215は、変数iが2であれば、ステップS9において判定部215によって導電路L(0),L(1)間にリーク故障が有ると判定されたか否かを確認し、変数iが3以上であれば、後述するステップS36において、変数iに1加算される前に判定部215によって導電路L(i-1),L(i)間リーク故障有りと判定されたか否かを確認する。
Next, the determination unit 215 confirms whether or not a leak failure has occurred between the conductive paths L (i-2) and L (i-1) (step S24). Specifically, when the variable i is 2, the determination unit 215 confirms whether or not the determination unit 215 determines that there is a leak failure between the conductive paths L (0) and L (1) in step S9. If the variable i is 3 or more, in step S36 described later, the determination unit 215 determines that there is a leakage failure between the conductive paths L (i-1) and L (i) before adding 1 to the variable i. Confirm whether or not.
そして、導電路L(i-2),L(i-1)間にリーク故障が生じていた場合(ステップS24でYES)、判定部215は、オフ電圧Vm(i)off、オン電圧Vm(i)on、及び下記の式(3)に基づき、演算抵抗値rc(i-1)を算出する(ステップS25)。式(3)は、請求項における式(F)に相当する。
When a leak failure has occurred between the conductive paths L (i-2) and L (i-1) (YES in step S24), the determination unit 215 determines that the off voltage Vm (i) off and the on voltage Vm ( i) On the basis of on and the following equation (3), the calculated resistance value rc (i-1) is calculated (step S25). Formula (3) corresponds to Formula (F) in the claims.
rc(i-1)=[{-3IcR+2(Vm(i)off-Vm(i)on)}/{2IcR-(Vm(i)off-Vm(i)on)}]×R・・・(3)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rc (i-1) = [{-3IcR + 2 (Vm (i) off-Vm (i) on)} / {2IcR- (Vm (i) off-Vm (i) on)}] × R ( 3)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rc (i-1) = [{-3IcR + 2 (Vm (i) off-Vm (i) on)} / {2IcR- (Vm (i) off-Vm (i) on)}] × R ( 3)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
次に、判定部215は、リーク抵抗値rv(i-1)と、演算抵抗値rc(i-1)とを比較する(ステップS26)。具体的には、判定部215は、変数iが2であれば、ステップS4で算出されたリーク抵抗値rv(1)と演算抵抗値rc(i-1)とを比較し、変数iが3以上であれば、後述するステップS31で変数iに1加算される前に算出されたリーク抵抗値rv(i)と演算抵抗値rc(i-1)とを比較する。
Next, the determination unit 215 compares the leak resistance value rv (i-1) with the calculated resistance value rc (i-1) (step S26). Specifically, if the variable i is 2, the determination unit 215 compares the leak resistance value rv (1) calculated in step S4 with the calculated resistance value rc (i-1), and the variable i is 3 If so, the leakage resistance value rv (i) calculated before 1 is added to the variable i in step S31 described later is compared with the calculated resistance value rc (i-1).
そして、リーク抵抗値rv(i-1)と、演算抵抗値rc(i-1)とが実質的に等しい場合(ステップS26でYES)、判定部215は、導電路L(i-1),L(i)間、及び導電路L(i),L(i+1)間には、リーク故障が生じていないと判定する(ステップS27)。
When the leak resistance value rv (i-1) and the calculated resistance value rc (i-1) are substantially equal (YES in step S26), the determination unit 215 determines that the conductive path L (i-1), It is determined that no leak failure has occurred between L (i) and between the conductive paths L (i) and L (i + 1) (step S27).
なお、「実質的に等しい」とは、リーク抵抗値rv(i-1)と演算抵抗値rc(i-1)との差が、例えば電圧検出部Uの電圧検出誤差、抵抗R0~Rnの抵抗値精度誤差、及びリーク抵抗算出部213によるリーク抵抗値rv(i-1)と演算抵抗値rc(i-1)の演算誤差等によって生じるおそれのある誤差範囲内であることを意味している。
Note that “substantially equal” means that the difference between the leak resistance value rv (i−1) and the calculated resistance value rc (i−1) is, for example, the voltage detection error of the voltage detection unit U and the resistances R0 to Rn. Meaning that it is within an error range that may be caused by a resistance value accuracy error and a calculation error of the leak resistance value rv (i-1) and the calculation resistance value rc (i-1) by the leak resistance calculation unit 213. Yes.
次に、電池電圧算出部214は、オフ電圧Vm(i)off、オン電圧Vm(i)on、電池電圧Vb(i-1)、及び下記の式(4)に基づき、電池電圧Vb(i)を算出し(ステップS28)、ステップS29へ移行する。
Next, the battery voltage calculation unit 214 calculates the battery voltage Vb (i) based on the off voltage Vm (i) off, the on voltage Vm (i) on, the battery voltage Vb (i-1), and the following equation (4). ) Is calculated (step S28), and the process proceeds to step S29.
電池電圧算出部214は、変数iが2であれば、ステップS10で算出された電池電圧Vb(1)を電池電圧Vb(i-1)として用い、変数iが3以上であれば、変数iに1加算される前にステップS37で算出された電池電圧Vb(i)を電池電圧Vb(i-1)として用いる。式(4)は、請求項における式(E)に相当している。
The battery voltage calculation unit 214 uses the battery voltage Vb (1) calculated in step S10 as the battery voltage Vb (i-1) if the variable i is 2, and if the variable i is 3 or more, the variable i The battery voltage Vb (i) calculated in step S37 before 1 is added to is used as the battery voltage Vb (i-1). Expression (4) corresponds to expression (E) in the claims.
Vb(i)=Vm(i)off -Vb(i-1) ×[{2IcR-(Vm(i)off-Vm(i)on )}/(IcR)]・・・(4)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i) = Vm (i) off-Vb (i-1) .times. [{2IcR- (Vm (i) off-Vm (i) on)} / (IcR)] (4)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i) = Vm (i) off-Vb (i-1) .times. [{2IcR- (Vm (i) off-Vm (i) on)} / (IcR)] (4)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
以上、ステップS25~S28によって、導電路L(i-2),L(i-1)間にリーク故障が生じた場合であっても、導電路L(i-1),L(i)間、及び導電路L(i),L(i+1)間にリーク故障が生じていなければ、電池電圧算出部214は、式(4)に基づき、精度よく電池電圧Vb(i)を算出することができる。
As described above, even if a leakage failure occurs between the conductive paths L (i-2) and L (i-1) by steps S25 to S28, the distance between the conductive paths L (i-1) and L (i) is determined. If the leakage failure does not occur between the conductive paths L (i) and L (i + 1), the battery voltage calculation unit 214 calculates the battery voltage Vb (i) with high accuracy based on the equation (4). be able to.
一方、リーク抵抗値rv(i-1)と、演算抵抗値rc(i-1)とが実質的に等しくない場合(ステップS26でNO)、判定部215は、導電路L(i-2),L(i-1)間以外にもリーク故障が生じており、すなわちリーク故障が複数箇所で生じていると判定する(ステップS30)。リーク故障が複数箇所で生じている場合、電池電圧Vb(i)を算出することはできないので、判定部215は、処理を終了する。
On the other hand, when the leak resistance value rv (i-1) and the calculated resistance value rc (i-1) are not substantially equal (NO in step S26), the determination unit 215 determines that the conductive path L (i-2) , L (i-1), it is determined that a leak failure has occurred, that is, that a leak failure has occurred at a plurality of locations (step S30). If the leak failure occurs at a plurality of locations, the battery voltage Vb (i) cannot be calculated, and the determination unit 215 ends the process.
他方、ステップS24において、導電路L(i-2),L(i-1)間にリーク故障が生じていなかった場合(ステップS24でNO)、リーク抵抗算出部213は、オフ電圧Vm(i)off、オン電圧Vm(i)on、及び下記の式(5)に基づき、リーク抵抗値rv(i)を算出する(ステップS31)。式(5)は、請求項における式(A)に相当している。
On the other hand, if no leakage failure has occurred between the conductive paths L (i-2) and L (i-1) in step S24 (NO in step S24), the leakage resistance calculation unit 213 uses the off voltage Vm (i ) off, the on-voltage Vm (i) on, and the leak resistance value rv (i) is calculated based on the following equation (5) (step S31). Expression (5) corresponds to Expression (A) in the claims.
rv(i)={2R(Vm(i)off-Vm(i)on)}/{2IcR-(Vm(i)off-Vm(i)on)}・・・(5)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rv (i) = {2R (Vm (i) off-Vm (i) on)} / {2IcR- (Vm (i) off-Vm (i) on)} (5)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 rv (i) = {2R (Vm (i) off-Vm (i) on)} / {2IcR- (Vm (i) off-Vm (i) on)} (5)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
以上、ステップS31の処理により、リーク抵抗算出部213は、複数の電池Bが直列接続されている場合であっても、各電池Bに接続された導電路間のリーク抵抗値rv(1)~rv(n)を算出することができる。
As described above, the leakage resistance calculation unit 213 performs the leakage resistance value rv (1) to rv (1) to the conductive path connected to each battery B even when the plurality of batteries B are connected in series by the process of step S31. rv (n) can be calculated.
次に、判定部215は、ステップS31において算出されたリーク抵抗値rv(i)を、判定値Raと比較する(ステップS32)。そして、リーク抵抗値rv(i)が、判定値Ra以上の場合(ステップS32でYES)、判定部215は、導電路L(i-1),L(i)間にリーク故障が無く、かつ導電路L(i),L(i+1)間にもリーク故障が無いと判定する(ステップS33)。
Next, the determination unit 215 compares the leak resistance value rv (i) calculated in step S31 with the determination value Ra (step S32). When the leakage resistance value rv (i) is equal to or greater than the determination value Ra (YES in step S32), the determination unit 215 has no leakage failure between the conductive paths L (i-1) and L (i), and It is determined that there is no leak failure between the conductive paths L (i) and L (i + 1) (step S33).
この場合、電圧検出部Uiは、電池Biの電池電圧Vb(i)を正しく検出することができるので、電池電圧算出部214は、電圧検出部Uiによって検出されたオフ電圧Vm(i)offを、電池電圧Vb(i)として取得し(ステップS34)、ステップS29へ移行する。
In this case, since the voltage detection unit Ui can correctly detect the battery voltage Vb (i) of the battery Bi, the battery voltage calculation unit 214 uses the off voltage Vm (i) off detected by the voltage detection unit Ui. The battery voltage Vb (i) is acquired (step S34), and the process proceeds to step S29.
一方、ステップS32において、リーク抵抗値rv(i)が、判定値Raに満たない場合(ステップS32でNO)、判定部215は、リーク抵抗値rv(i)を0と比較する(ステップS35)。そして、リーク抵抗値rv(i)が、0を超え、プラスの値である場合(ステップS35でYES)、判定部215は、導電路L(i-1),L(i)間にリーク故障が有り、かつ導電路L(i),L(i+1)間にはリーク故障が無いと判定する(ステップS33)。
On the other hand, when the leakage resistance value rv (i) is less than the determination value Ra in step S32 (NO in step S32), the determination unit 215 compares the leakage resistance value rv (i) with 0 (step S35). . If the leak resistance value rv (i) exceeds 0 and is a positive value (YES in step S35), the determination unit 215 causes the leakage failure between the conductive paths L (i-1) and L (i). And there is no leakage failure between the conductive paths L (i) and L (i + 1) (step S33).
導電路L(i-1),L(i)間にリーク故障が有る場合、スイッチング素子SWiがオフしていても、電池Biの放電電流が、リーク故障箇所(例えばコンデンサCi)を介して抵抗Ri,Ri-1を流れる結果、抵抗Ri,Ri-1で電圧降下が生じる。そのため、この状態で電圧検出部Uiによって検出された検出電圧Vm(i)すなわちオフ電圧Vm(i)offには、Ri,Ri-1の電圧降下が含まれることになる結果、電池電圧Vb(i)との間に誤差が生じる。
When there is a leak failure between the conductive paths L (i-1) and L (i), even if the switching element SWi is turned off, the discharge current of the battery Bi is resistance through the leak failure location (for example, the capacitor Ci). As a result of flowing through Ri and Ri-1, a voltage drop occurs at the resistors Ri and Ri-1. Therefore, in this state, the detection voltage Vm (i) detected by the voltage detection unit Ui, that is, the off voltage Vm (i) off includes a voltage drop of Ri and Ri−1. As a result, the battery voltage Vb ( An error occurs with i).
そこで、電池電圧算出部214は、オフ電圧Vm(i)off、オン電圧Vm(i)on、及び下記の式(6)に基づき、電池電圧Vb(i)を算出する(ステップS37)。式(6)は、請求項における式(C)に相当している。
Therefore, the battery voltage calculation unit 214 calculates the battery voltage Vb (i) based on the off voltage Vm (i) off, the on voltage Vm (i) on, and the following equation (6) (step S37). Expression (6) corresponds to Expression (C) in the claims.
Vb(i)=2IcR×Vm(i)off/(Vm(i)off-Vm(i)on)・・・(6)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i) = 2IcR × Vm (i) off / (Vm (i) off−Vm (i) on) (6)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i) = 2IcR × Vm (i) off / (Vm (i) off−Vm (i) on) (6)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
ステップS37の処理により、電池電圧算出部214は、導電路L(i-1),L(i)間にリーク故障が生じている場合であっても、精度よく電池電圧Vb(i)を算出することができる。
By the processing in step S37, the battery voltage calculation unit 214 calculates the battery voltage Vb (i) with high accuracy even when a leak failure occurs between the conductive paths L (i-1) and L (i). can do.
次に、電池電圧算出部214は、ステップS38において、ステップS37で算出された電池電圧Vb(i)と、オフ電圧Vm(i-1)offと、オン電圧Vm(i-1)onとに基づき、下記の式(7)に基づいて、電池電圧Vb(i-1)を算出し(ステップS38)、ステップS29へ移行する。式(7)は、請求項における式(D)に相当している。
Next, in step S38, the battery voltage calculation unit 214 changes the battery voltage Vb (i) calculated in step S37, the off voltage Vm (i-1) off, and the on voltage Vm (i-1) on. Based on the following formula (7), the battery voltage Vb (i-1) is calculated (step S38), and the process proceeds to step S29. Expression (7) corresponds to Expression (D) in the claims.
Vb(i-1)=Vm(i-1)off -[Vb(i)×{IcR-(Vm(i-1)on-Vm(i-1)off )}/(2IcR)]・・・(7)
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i-1) = Vm (i-1) off- [Vb (i) * {IcR- (Vm (i-1) on-Vm (i-1) off)} / (2IcR)] ... (7)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
但し、
R:抵抗R0~Rnの抵抗値
Ic:基準電流値Ic。 Vb (i-1) = Vm (i-1) off- [Vb (i) * {IcR- (Vm (i-1) on-Vm (i-1) off)} / (2IcR)] ... (7)
However,
R: resistance value of resistors R0 to Rn Ic: reference current value Ic.
ステップS38の処理により、変数iに1が加算される前の電池Biに隣接する電池Bの両端にそれぞれ接続された導電路間でリーク故障が生じたために、リーク抵抗値rv(1), rv(i)がマイナスの値となり(ステップS8,S35でNo)、正しい電池電圧Vb(i)を算出することができなかった場合(ステップS11,S39)であっても、その算出することができなかった電池電圧Vb(i)に対応する電池電圧Vb(i-1)を算出することができる。
As a result of the processing in step S38, a leakage failure has occurred between the conductive paths connected to both ends of the battery B adjacent to the battery Bi before 1 is added to the variable i, so that the leakage resistance values rv (1), rv Even if (i) becomes a negative value (No in steps S8 and S35) and the correct battery voltage Vb (i) cannot be calculated (steps S11 and S39), it can be calculated. The battery voltage Vb (i-1) corresponding to the battery voltage Vb (i) that did not exist can be calculated.
一方、ステップS35において、リーク抵抗値rv(1)が0以下の値、例えばマイナスの値である場合(ステップS35でNO)、判定部215は、導電路L(i-1),L(i)間にはリーク故障が無く、かつ導電路L(i),L(i+1)間にリーク故障が有ると判定する(ステップS39)。導電路L(i),L(i+1)間にリーク故障が有る場合、現時点では電池電圧Vb(i)を算出することができない(ステップS38で算出される)ので、電池電圧算出部214は、電池電圧Vb(i)を算出することなくステップS29へ移行する。
On the other hand, in step S35, when the leak resistance value rv (1) is a value equal to or less than 0, for example, a negative value (NO in step S35), the determination unit 215 determines the conductive paths L (i-1), L (i ) Between the conductive paths L (i) and L (i + 1) (step S39). If there is a leak failure between the conductive paths L (i) and L (i + 1), the battery voltage Vb (i) cannot be calculated at this time (calculated in step S38). Shifts to step S29 without calculating the battery voltage Vb (i).
ステップS29において、オンオフ電圧取得部211は、変数iと電池Bの個数nとを比較する(ステップS29)。そして、変数iと個数nとが等しければ(ステップS29でYes)、すべての電池Bについて、電池電圧Vb(1)~Vb(n)の算出、各電池Bに対応する導電路のリーク抵抗値rv(1)~rv(n)の算出、及び各導電路におけるリーク故障の有無の判定が終了したことになるから、オンオフ電圧取得部211は、処理を終了する。
In step S29, the on / off voltage acquisition unit 211 compares the variable i with the number n of the batteries B (step S29). If the variable i is equal to the number n (Yes in step S29), the battery voltages Vb (1) to Vb (n) are calculated for all the batteries B, and the leakage resistance value of the conductive path corresponding to each battery B is calculated. Since the calculation of rv (1) to rv (n) and the determination of the presence or absence of a leak failure in each conductive path have been completed, the on / off voltage acquisition unit 211 ends the process.
一方、変数iと個数nとが等しくなければ(ステップS29でNo)、オンオフ電圧取得部211は、次の電池Bに対して処理を継続するべくステップS21へ移行する。
On the other hand, if the variable i and the number n are not equal (No in step S29), the on / off voltage acquisition unit 211 proceeds to step S21 to continue the process for the next battery B.
以上、図1に示す電池電源装置1、及びリーク処理装置2は、ステップS1~S39の処理により、リーク故障に対処して、電池電圧Vb(1)~Vb(n)の算出、各電池Bに対応する導電路のリーク抵抗値rv(1)~rv(n)の算出、及び各導電路におけるリーク故障の有無の判定を行うことができる。
As described above, the battery power supply device 1 and the leak processing device 2 shown in FIG. 1 deal with the leak failure by the processing of steps S1 to S39, calculate the battery voltages Vb (1) to Vb (n), and each battery B It is possible to calculate the leakage resistance values rv (1) to rv (n) of the conductive paths corresponding to the above and determine whether there is a leak failure in each conductive path.
そして、例えば、通信IF24は、電池電圧Vb(1)~Vb(n)、リーク抵抗値rv(1)~rv(n)、及び各導電路におけるリーク故障の有無の判定結果を示す情報を、接続端子13に接続された外部装置へ送信してもよい。
For example, the communication IF 24 includes information indicating the battery voltage Vb (1) to Vb (n), the leak resistance values rv (1) to rv (n), and the determination result of the presence or absence of a leak failure in each conductive path. You may transmit to the external device connected to the connection terminal 13. FIG.
あるいは、制御部21は、電池電圧Vb(1)~Vb(n)に基づいて、電池電圧Vb(1)~Vb(n)を均等化する均等化処理部を備えてもよい。具体的には、例えば、制御部21は、ステップS1~S39を繰り返し実行することにより、電池電圧Vb(1)~Vb(n)を更新する。均等化処理部は、電池電圧Vb(1)~Vb(n)のうち最も低い電圧に対応する電池B以外の電池Bを、均等化放電対象電池とし、その均等化放電対象電池と対応するスイッチング素子SWを、当該対応する均等化放電対象電池の電池電圧Vbが前記最も低い電圧と略等しくなるまでオンさせて、その均等化放電対象電池を放電させる。これにより、リーク故障が発生している場合であっても、精度よく電池電圧Vb(1)~Vb(n)を均等化することができる。
Alternatively, the control unit 21 may include an equalization processing unit that equalizes the battery voltages Vb (1) to Vb (n) based on the battery voltages Vb (1) to Vb (n). Specifically, for example, the controller 21 updates the battery voltages Vb (1) to Vb (n) by repeatedly executing steps S1 to S39. The equalization processing unit sets a battery B other than the battery B corresponding to the lowest voltage among the battery voltages Vb (1) to Vb (n) as an equalization discharge target battery, and performs switching corresponding to the equalization discharge target battery. The element SW is turned on until the battery voltage Vb of the corresponding equalization discharge target battery becomes substantially equal to the lowest voltage, and the equalization discharge target battery is discharged. Thereby, even when a leak failure occurs, the battery voltages Vb (1) to Vb (n) can be equalized with high accuracy.
なお、電池電圧算出部214は、ステップS10において、式(2)の代わりに下記の式(8)を用い、ステップS4で算出されたリーク抵抗値rv(1)と、オフ電圧Vm(1)off
とに基づいて電池電圧Vb(1)を算出してもよい。式(8)は、請求項における式(B)に相当している。 The batteryvoltage calculation unit 214 uses the following equation (8) instead of the equation (2) in step S10, the leakage resistance value rv (1) calculated in step S4, and the off voltage Vm (1). off
Based on the above, the battery voltage Vb (1) may be calculated. Expression (8) corresponds to Expression (B) in the claims.
とに基づいて電池電圧Vb(1)を算出してもよい。式(8)は、請求項における式(B)に相当している。 The battery
Based on the above, the battery voltage Vb (1) may be calculated. Expression (8) corresponds to Expression (B) in the claims.
Vb(1)={(2R/rv(1))+1}×Vm(1)off・・・(8)
但し、
R:抵抗R0~Rnの抵抗値
また、電池電圧算出部214は、ステップS37において、式(6)の代わりに下記の式(9)を用い、ステップS31で算出されたリーク抵抗値rv(i)と、オフ電圧Vm(i)offとに基づいて電池電圧Vb(i)を算出してもよい。式(9)は、請求項における式(B)に相当している。 Vb (1) = {(2R / rv (1)) + 1} × Vm (1) off (8)
However,
R: Resistance values of the resistors R0 to Rn Further, in step S37, the batteryvoltage calculation unit 214 uses the following equation (9) instead of the equation (6), and uses the leakage resistance value rv (i calculated in step S31. ) And the off voltage Vm (i) off, the battery voltage Vb (i) may be calculated. Expression (9) corresponds to Expression (B) in the claims.
但し、
R:抵抗R0~Rnの抵抗値
また、電池電圧算出部214は、ステップS37において、式(6)の代わりに下記の式(9)を用い、ステップS31で算出されたリーク抵抗値rv(i)と、オフ電圧Vm(i)offとに基づいて電池電圧Vb(i)を算出してもよい。式(9)は、請求項における式(B)に相当している。 Vb (1) = {(2R / rv (1)) + 1} × Vm (1) off (8)
However,
R: Resistance values of the resistors R0 to Rn Further, in step S37, the battery
Vb(i)={(2R/rv(i))+1}×Vm(i)off・・・(9)
但し、
R:抵抗R0~Rnの抵抗値
式(2),式(6)の代わりに式(8),式(9)を用いることによって、電池電圧Vb(1),Vb(i)を算出するための演算処理を簡素化することができる。 Vb (i) = {(2R / rv (i)) + 1} * Vm (i) off (9)
However,
R: Resistance value of resistors R0 to Rn In order to calculate battery voltages Vb (1) and Vb (i) by using equations (8) and (9) instead of equations (2) and (6) It is possible to simplify the arithmetic processing.
但し、
R:抵抗R0~Rnの抵抗値
式(2),式(6)の代わりに式(8),式(9)を用いることによって、電池電圧Vb(1),Vb(i)を算出するための演算処理を簡素化することができる。 Vb (i) = {(2R / rv (i)) + 1} * Vm (i) off (9)
However,
R: Resistance value of resistors R0 to Rn In order to calculate battery voltages Vb (1) and Vb (i) by using equations (8) and (9) instead of equations (2) and (6) It is possible to simplify the arithmetic processing.
なお、ステップS28を実行せず、ステップS27からステップS29へ移行してもよい。しかしながら、ステップS28を実行することによって、電池Biと隣接する電池Bi-1の導電路でリーク故障が生じた場合(ステップS24でYES)であっても、電池Biの電池電圧Vb(i)を精度よく算出することができる。
In addition, you may transfer to step S29 from step S27, without performing step S28. However, even if a leak failure occurs in the conductive path of the battery Bi-1 adjacent to the battery Bi by executing step S28 (YES in step S24), the battery voltage Vb (i) of the battery Bi is set. It can be calculated with high accuracy.
また、ステップS25,S26,S27,S30を実行せず、ステップS24からステップS28へ移行してもよい。しかしながら、ステップS25,S26,S27,S30を実行することによって、リーク故障が複数生じている場合に、精度の低い電池電圧Vb(i)を算出するおそれが低減される。また、ステップS27,S30によって、リーク故障の発生状況を詳細に判定することができる。
Further, steps S25, S26, S27, and S30 may not be executed, and the process may proceed from step S24 to step S28. However, by executing Steps S25, S26, S27, and S30, the risk of calculating the low-accuracy battery voltage Vb (i) when a plurality of leak failures has occurred is reduced. Further, the occurrence state of the leak failure can be determined in detail by steps S27 and S30.
また、ステップS8,S9,S11及びステップS35,S36,S39を実行せず、ステップS5でNO、及びステップS32でNOの場合、それぞれステップS10,S37へ移行してもよい。しかしながら、ステップS8,S9,S11及びステップS35,S36,S39を実行することによって、リーク故障の発生状況を詳細に判定することができる。また、ステップS11,S39によって、電池Biと隣接する電池Bi+1の導電路でリーク故障が発生した場合、電池電圧Vb(i)が算出されないので、精度の低い電池電圧Vb(i)が算出されるおそれが低減される。
Further, when steps S8, S9, S11 and steps S35, S36, S39 are not executed, and NO is determined in step S5 and NO in step S32, the process may proceed to steps S10 and S37, respectively. However, by executing Steps S8, S9, and S11 and Steps S35, S36, and S39, it is possible to determine the occurrence status of the leak failure in detail. In addition, when a leak failure occurs in the conductive path of the battery Bi + 1 adjacent to the battery Bi in steps S11 and S39, the battery voltage Vb (i) is not calculated, so the battery voltage Vb (i) with low accuracy is calculated. The fear is reduced.
また、ステップS5~S9,S11、及びステップS32~S36,S39を実行せず、ステップS4,S31から、それぞれステップS10,S37へ移行してもよい。しかしながら、ステップS5~S7、及びステップS32~S34を実行することによって、導電路にリーク故障が無いときは、式(2)や式(6)を実行することなく電池電圧Vb(1),Vb(i)が得られるので、演算処理量を減少させることができる。
Alternatively, steps S5 to S9, S11, and steps S32 to S36, S39 may not be executed, and the process may proceed from steps S4 and S31 to steps S10 and S37, respectively. However, if there is no leakage failure in the conductive path by executing steps S5 to S7 and steps S32 to S34, the battery voltages Vb (1), Vb are not executed without executing the equations (2) and (6). Since (i) is obtained, the amount of calculation processing can be reduced.
また、電池Bは、一つであってもよい。電池Bが一つの場合、ステップS8,S11、S21~S39を実行せず、ステップS5でNoのとき、ステップS9へ移行してもよい。
Moreover, the battery B may be one. If there is only one battery B, steps S8, S11, and S21 to S39 may not be executed, and if No in step S5, the process may move to step S9.
また、電池電圧算出部214を備えず、ステップS7,S10,S28,S34,S37,S38を実行しない構成としてもよい。
Further, the battery voltage calculation unit 214 may not be provided, and steps S7, S10, S28, S34, S37, and S38 may not be executed.
また、リーク抵抗算出部213及び判定部215を備えず、ステップS4~S9,S11、S24~S28、S30~S36、及びS39を実行せず、ステップS3からステップS10へ移行し、ステップS23からステップS37へ移行する構成としてもよい。
Further, the leakage resistance calculation unit 213 and the determination unit 215 are not provided, and steps S4 to S9, S11, S24 to S28, S30 to S36, and S39 are not executed, and the process proceeds from step S3 to step S10, and from step S23 to step It is good also as a structure which transfers to S37.
次に、上述の式(1)~式(7)の導出方法について説明する。まず、図1に示すリーク処理装置2から一部を切り出した図5の回路モデルに基づいて、式(1)及び式(2)の導出方法を説明する。
Next, a method for deriving the above formulas (1) to (7) will be described. First, a method for deriving Expressions (1) and (2) will be described based on the circuit model of FIG. 5 that is partially cut out from the leak processing apparatus 2 shown in FIG.
以下の説明において、iを任意の整数とした場合、rvはリーク抵抗値、Irvはリーク抵抗に流れる電流値、VM(i)は電圧検出部Uiの検出電圧値、IRは抵抗Riに流れる電流値を示し、符号の後ろに付された“_on”は、スイッチング素子SWiがオンのときの値であることを示し、符号の後ろに付された“_off”は、スイッチング素子SWiがオフのときの値であることを示している。また、電池Biと、電池Biに対応する導電路L(i-1),L(i)、定電流源PSi、スイッチング素子SWi、及び電圧検出部Uiからなる回路を、チャネル“chi”と称する。
In the following description, when the i are arbitrary integers, r v leakage resistance, I rv is current flowing through the leakage resistance, V M (i) is the detected voltage value of the voltage detection unit Ui, I R is the resistance The value of the current flowing through Ri indicates “ _on ” added to the end of the symbol, which indicates that the switching element SWi is on, and “ _off ” added to the end of the symbol indicates the switching element SWi. This is the value when is off. A circuit including the battery Bi and the conductive paths L (i−1) and L (i) corresponding to the battery Bi, the constant current source PSi, the switching element SWi, and the voltage detection unit Ui is referred to as a channel “chi”. .
次に、図1に示すリーク処理装置2から一部を切り出した図6の回路モデルに基づいて、式(3)~式(7)の導出方法について説明する。図6に示す回路モデルは、3つのchn-1、chn、及びchn+1で構成されている。
Next, a method for deriving Expressions (3) to (7) will be described based on the circuit model of FIG. 6 partially cut out from the leak processing apparatus 2 shown in FIG. The circuit model shown in FIG. 6 includes three chn−1, chn, and chn + 1.
本発明に係るリーク処理装置、及びこれを用いた電池電源装置は、携帯型パーソナルコンピュータ、デジタルカメラ、携帯電話機、電気自動車、ハイブリッドカー、ハイブリッドエレベータ、及び太陽電池や発電装置と二次電池とが組み合わされた電源システム、無停電源装置等、種々の装置、システムにおいて、好適に利用することができる。
A leak treatment apparatus according to the present invention and a battery power supply apparatus using the leak treatment apparatus include a portable personal computer, a digital camera, a mobile phone, an electric vehicle, a hybrid car, a hybrid elevator, and a solar cell, a power generation device, and a secondary battery. It can be suitably used in various devices and systems such as a combined power supply system and a non-disruptive power supply device.
1 電池電源装置
2 リーク処理装置
3 組電池
11,12,13 接続端子
21 制御部
22 電圧計測部
24 通信IF
211 オンオフ電圧取得部
212 リーク情報算出部
213 リーク抵抗算出部
214 電池電圧算出部
215 判定部
B,B1~Bn 電池
C,C1~Cn コンデンサ
D,D1~Dn 放電部
Ic 基準電流値
L,L(1)~L(n) 導電路
PS,PS1~PSn 定電流源
R,R0~Rn 抵抗
Ra 判定値
rc 演算抵抗値
rv リーク抵抗値
SW,SW1~SWn スイッチング素子
U,U1~Un 電圧検出部
Vb,Vb(1)~Vb(n) 電池電圧
Vm(1)off~Vm(n)off オフ電圧
Vm(1)on~Vm(n)on オン電圧
Vm(1)~Vm(n) 検出電圧 DESCRIPTION OFSYMBOLS 1 Battery power supply device 2 Leak processing device 3 Battery assembly 11, 12, 13 Connection terminal 21 Control part 22 Voltage measurement part 24 Communication IF
211 ON / OFFvoltage acquisition unit 212 Leak information calculation unit 213 Leak resistance calculation unit 214 Battery voltage calculation unit 215 Determination unit B, B1 to Bn Battery C, C1 to Cn Capacitor D, D1 to Dn Discharge unit Ic Reference current value L, L ( 1) to L (n) conductive path PS, PS1 to PSn constant current source R, R0 to Rn resistance Ra judgment value rc calculation resistance value rv leakage resistance value SW, SW1 to SWn switching element U, U1 to Un voltage detection unit Vb , Vb (1) to Vb (n) Battery voltage Vm (1) off to Vm (n) off Off voltage Vm (1) on to Vm (n) on On voltage Vm (1) to Vm (n) Detection voltage
2 リーク処理装置
3 組電池
11,12,13 接続端子
21 制御部
22 電圧計測部
24 通信IF
211 オンオフ電圧取得部
212 リーク情報算出部
213 リーク抵抗算出部
214 電池電圧算出部
215 判定部
B,B1~Bn 電池
C,C1~Cn コンデンサ
D,D1~Dn 放電部
Ic 基準電流値
L,L(1)~L(n) 導電路
PS,PS1~PSn 定電流源
R,R0~Rn 抵抗
Ra 判定値
rc 演算抵抗値
rv リーク抵抗値
SW,SW1~SWn スイッチング素子
U,U1~Un 電圧検出部
Vb,Vb(1)~Vb(n) 電池電圧
Vm(1)off~Vm(n)off オフ電圧
Vm(1)on~Vm(n)on オン電圧
Vm(1)~Vm(n) 検出電圧 DESCRIPTION OF
211 ON / OFF
Claims (18)
- 第1電池の一方の極に一端が接続された第1抵抗と、
前記第1抵抗の他端に接続された第1導電路と、
前記第1電池の他方の極に一端が接続された接続抵抗と、
前記接続抵抗の他端に接続された接続導電路と、
前記第1導電路と前記接続導電路との間の電圧を検出する第1電圧検出部と、
前記第1導電路と前記接続導電路との間に所定の基準電流を流すオン状態と、前記基準電流を流さないオフ状態とを切り替え可能な第1放電部と、
前記第1放電部をオフ状態にさせたときに前記第1電圧検出部によって検出された電圧を第1オフ電圧として取得し、前記第1放電部をオン状態にさせたときに前記第1電圧検出部によって検出された電圧を第1オン電圧として取得するオンオフ電圧取得部と、
前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1導電路と前記接続導電路との間の抵抗値及び前記第1電池の電池電圧である第1電池電圧のうち少なくとも一方を算出するリーク情報算出部と
を備えるリーク処理装置。 A first resistor having one end connected to one pole of the first battery;
A first conductive path connected to the other end of the first resistor;
A connection resistor having one end connected to the other electrode of the first battery;
A connection conductive path connected to the other end of the connection resistance;
A first voltage detector for detecting a voltage between the first conductive path and the connection conductive path;
A first discharge unit capable of switching between an on state in which a predetermined reference current flows between the first conductive path and the connection conductive path and an off state in which the reference current does not flow;
The voltage detected by the first voltage detection unit when the first discharge unit is turned off is obtained as a first off voltage, and the first voltage is obtained when the first discharge unit is turned on. An on / off voltage acquisition unit for acquiring a voltage detected by the detection unit as a first on-voltage;
Based on the first off voltage and the first on voltage, at least one of a resistance value between the first conductive path and the connection conductive path and a first battery voltage that is a battery voltage of the first battery. A leak processing apparatus comprising: a leak information calculation unit that calculates - 前記リーク情報算出部は、
前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1導電路と前記接続導電路との間の抵抗値を第1リーク抵抗値として算出するリーク抵抗算出部を含む請求項1記載のリーク処理装置。 The leak information calculation unit
2. A leak resistance calculation unit that calculates a resistance value between the first conductive path and the connection conductive path as a first leak resistance value based on the first off voltage and the first on voltage. The described leak processing apparatus. - 前記リーク抵抗算出部は、下記の式(A)に基づいて、前記第1リーク抵抗値rv(1)を算出する請求項2記載のリーク処理装置。
rv(1)={2R(Vm(1)off-Vm(1)on)}/{2IcR-(Vm(1)off-Vm(1)on)}・・・(A)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値 3. The leak processing apparatus according to claim 2, wherein the leak resistance calculation unit calculates the first leak resistance value rv (1) based on the following equation (A).
rv (1) = {2R (Vm (1) off-Vm (1) on)} / {2IcR- (Vm (1) off-Vm (1) on)} (A)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance Ic: the current value of the reference current - 前記リーク情報算出部は、
前記第1オフ電圧と前記第1オン電圧とに基づき算出された前記第1リーク抵抗値と、前記第1オフ電圧とに基づいて、前記第1電池電圧を算出する電池電圧算出部をさらに含む請求項2又は3記載のリーク処理装置。 The leak information calculation unit
A battery voltage calculation unit configured to calculate the first battery voltage based on the first leakage resistance value calculated based on the first off voltage and the first on voltage and the first off voltage; The leak processing apparatus according to claim 2 or 3. - 前記電池電圧算出部は、下記の式(B)に基づいて、前記第1電池電圧Vb(1)を算出する請求項4記載のリーク処理装置。
Vb(1)={(2R/rv(1))+1}×Vm(1)off・・・(B)
但し、
Vm(1)off:前記第1オフ電圧
rv(1) :前記第1リーク抵抗値
R:前記第1抵抗及び前記接続抵抗の抵抗値 The leak processing apparatus according to claim 4, wherein the battery voltage calculation unit calculates the first battery voltage Vb (1) based on the following formula (B).
Vb (1) = {(2R / rv (1)) + 1} × Vm (1) off (B)
However,
Vm (1) off: the first off voltage rv (1): the first leakage resistance value R: the resistance value of the first resistance and the connection resistance - 前記リーク情報算出部は、
前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1電池電圧を算出する電池電圧算出部を含む請求項2又は3に記載のリーク処理装置。 The leak information calculation unit
The leak processing apparatus according to claim 2, further comprising a battery voltage calculation unit that calculates the first battery voltage based on the first off voltage and the first on voltage. - 前記電池電圧算出部は、下記の式(C)に基づき、前記第1電池電圧Vb(1)を算出する請求項6記載のリーク処理装置。
Vb(1)=2IcR×Vm(1)off/(Vm(1)off-Vm(1)on)・・・(C)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
R:前記第1抵抗及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値 The leak processing apparatus according to claim 6, wherein the battery voltage calculation unit calculates the first battery voltage Vb (1) based on the following formula (C).
Vb (1) = 2IcR × Vm (1) off / (Vm (1) off−Vm (1) on) (C)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage R: the resistance value Ic of the first resistor and the connection resistance Ic: the current value of the reference current - 前記第1電池と第2電池とが直列接続されており、
前記第2電池の、前記第1電池と接続された極とは異なる極に一端が接続された第2抵抗と、
前記第2抵抗の他端に接続された第2導電路と、
前記第2導電路と前記第1導電路との間の電圧を検出する第2電圧検出部と、
前記第2導電路と前記第1導電路との間に前記基準電流を流すオン状態と、前記基準電流を流さないオフ状態とを切り替え可能な第2放電部とを備え、
前記オンオフ電圧取得部は、さらに、
前記第2放電部をオフ状態にさせたときに前記第2電圧検出部によって検出された電圧を第2オフ電圧として取得し、前記第2放電部をオン状態にさせたときに前記第2電圧検出部によって検出された電圧を第2オン電圧として取得し、
前記電池電圧算出部は、
前記第2オフ電圧と前記第2オン電圧とに基づいて、前記第2電池の電池電圧である第2電池電圧をさらに算出する請求項4~7のいずれか1項に記載のリーク処理装置。 The first battery and the second battery are connected in series;
A second resistor having one end connected to a pole different from the pole connected to the first battery of the second battery;
A second conductive path connected to the other end of the second resistor;
A second voltage detector for detecting a voltage between the second conductive path and the first conductive path;
A second discharge unit capable of switching between an on state in which the reference current flows between the second conductive path and the first conductive path and an off state in which the reference current does not flow;
The on / off voltage acquisition unit further includes:
The voltage detected by the second voltage detection unit when the second discharge unit is turned off is obtained as a second off voltage, and the second voltage is obtained when the second discharge unit is turned on. The voltage detected by the detection unit is acquired as the second on-voltage,
The battery voltage calculation unit
The leak processing device according to any one of claims 4 to 7, further calculating a second battery voltage, which is a battery voltage of the second battery, based on the second off voltage and the second on voltage. - 前記電池電圧算出部は、
前記第1リーク抵抗値がマイナスの値になった場合、下記の式(D)に基づき、前記第1電池電圧Vb(1)を算出する請求項8記載のリーク処理装置。
Vb(1)=Vm(1)off -[Vb(2)×{IcR-(Vm(1)on-Vm(1)off )}/(2IcR)]・・・(D)
但し、
Vm(1)on:前記第1オン電圧
Vm(1)off:前記第1オフ電圧
Vb(2):前記第2電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値 The battery voltage calculation unit
9. The leak processing apparatus according to claim 8, wherein when the first leak resistance value becomes a negative value, the first battery voltage Vb (1) is calculated based on the following formula (D).
Vb (1) = Vm (1) off- [Vb (2) × {IcR- (Vm (1) on-Vm (1) off)} / (2IcR)] (D)
However,
Vm (1) on: the first on voltage Vm (1) off: the first off voltage Vb (2): the second battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current - 前記第1リーク抵抗値が、予め設定された判定値に満たず、かつ前記第1リーク抵抗値がプラスの値になったとき、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定し、前記第1リーク抵抗値が、前記判定値に満たず、かつ前記第1リーク抵抗値がマイナスの値になったとき、前記第2導電路と前記第1導電路との間にリーク故障が有ると判定する判定部をさらに備える
請求項8又は9に記載のリーク処理装置。 When the first leak resistance value is less than a predetermined determination value and the first leak resistance value is a positive value, a leak failure occurs between the first conductive path and the connection conductive path. When the first leakage resistance value is less than the determination value and the first leakage resistance value is a negative value, the second conductive path and the first conductive path The leak processing apparatus according to claim 8, further comprising a determination unit that determines that there is a leak failure in between. - 前記電池電圧算出部は、
前記判定部によって、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定された場合、前記第2オフ電圧、前記第2オン電圧、及び前記第1電池電圧に基づいて、前記第2電池電圧を算出する
請求項10に記載のリーク処理装置。 The battery voltage calculation unit
When the determination unit determines that there is a leakage failure between the first conductive path and the connection conductive path, based on the second off voltage, the second on voltage, and the first battery voltage The leak processing apparatus according to claim 10, wherein the second battery voltage is calculated. - 前記電池電圧算出部は、
前記判定部によって、前記第1導電路と前記接続導電路との間にリーク故障が有ると判定された場合、下記の式(E)に基づき、前記第2電池電圧Vb(2)を算出する
請求項11記載のリーク処理装置。
Vb(2)=Vm(2)off -Vb(1) ×[{2IcR-(Vm(2)off-Vm(2)on )}/(IcR)]・・・(E)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
Vb(1):前記第1電池電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値 The battery voltage calculation unit
When the determination unit determines that there is a leak failure between the first conductive path and the connection conductive path, the second battery voltage Vb (2) is calculated based on the following equation (E). The leak processing apparatus according to claim 11.
Vb (2) = Vm (2) off−Vb (1) × [{2IcR− (Vm (2) off−Vm (2) on)} / (IcR)] (E)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage Vb (1): the first battery voltage R: the resistance of the first resistance, the second resistance, and the connection resistance Value Ic: current value of the reference current - 前記判定部は、
前記第1導電路と前記接続導電路との間にリーク故障が有ると判定した場合、前記第2オフ電圧と前記第2オン電圧とに基づいて前記第1導電路と前記接続導電路との間の抵抗値を第1演算抵抗値として算出し、前記第1演算抵抗値と前記第1リーク抵抗値とが実質的に等しくない場合、リーク故障が複数生じていると判定する
請求項10~12のいずれか1項に記載のリーク処理装置。 The determination unit
When it is determined that there is a leakage failure between the first conductive path and the connection conductive path, the first conductive path and the connection conductive path are determined based on the second off voltage and the second on voltage. 11. A resistance value between the first calculation resistance value and the first leakage resistance value is determined to be determined as a plurality of leakage faults when the first calculation resistance value is not substantially equal to the first leakage resistance value. 13. The leak processing apparatus according to any one of items 12. - 前記判定部は、
下記の式(F)に基づき、前記第1演算抵抗値rc(1)を算出する
請求項13記載のリーク処理装置。
rc(1)=[{-3IcR+2(Vm(2)off-Vm(2)on)}/{2IcR-(Vm(2)off-Vm(2)on)}]×R・・・(F)
但し、
Vm(2)on:前記第2オン電圧
Vm(2)off:前記第2オフ電圧
R:前記第1抵抗、前記第2抵抗、及び前記接続抵抗の抵抗値
Ic:前記基準電流の電流値 The determination unit
The leak processing apparatus according to claim 13, wherein the first calculation resistance value rc (1) is calculated based on the following equation (F).
rc (1) = [{-3IcR + 2 (Vm (2) off-Vm (2) on)} / {2IcR- (Vm (2) off-Vm (2) on)}] × R (F)
However,
Vm (2) on: the second on voltage Vm (2) off: the second off voltage R: resistance value Ic of the first resistor, the second resistor, and the connection resistor Ic: current value of the reference current - 前記電池電圧算出部は、
前記判定部によってリーク故障が複数生じていると判定された場合、前記第2電池電圧の算出を実行しない
請求項13又は14記載のリーク処理装置。 The battery voltage calculation unit
The leak processing device according to claim 13 or 14, wherein when the determination unit determines that a plurality of leak failures occur, the calculation of the second battery voltage is not performed. - 前記リーク情報算出部は、
前記第1オフ電圧と前記第1オン電圧とに基づいて、前記第1電池電圧を算出する電池電圧算出部を含む請求項1記載のリーク処理装置。 The leak information calculation unit
The leak processing apparatus according to claim 1, further comprising: a battery voltage calculation unit that calculates the first battery voltage based on the first off voltage and the first on voltage. - 請求項1~16のいずれか1項に記載のリーク処理装置と、
前記第1電池と
を備える電池電源装置。 A leak processing apparatus according to any one of claims 1 to 16,
A battery power supply device comprising: the first battery. - 請求項8~16のいずれか1項に記載のリーク処理装置と、
前記第1電池と、
前記第2電池と
を備える電池電源装置。 A leak processing apparatus according to any one of claims 8 to 16,
The first battery;
A battery power supply device comprising: the second battery.
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