WO2013145495A1 - 電源装置 - Google Patents
電源装置 Download PDFInfo
- Publication number
- WO2013145495A1 WO2013145495A1 PCT/JP2012/084115 JP2012084115W WO2013145495A1 WO 2013145495 A1 WO2013145495 A1 WO 2013145495A1 JP 2012084115 W JP2012084115 W JP 2012084115W WO 2013145495 A1 WO2013145495 A1 WO 2013145495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- output terminal
- circuit
- control circuit
- supplied
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- 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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
-
- 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 power supply apparatus that performs voltage conversion by switching a supplied DC voltage with a switching element and supplies the converted DC voltage to an external battery from an output terminal.
- Vehicles such as hybrid vehicles and electric vehicles include a drive motor and a high voltage battery for supplying power to the drive motor.
- the output voltage of the high-voltage battery is boosted by the boost converter and given to the drive motor, and is stepped down by the step-down converter and given to the auxiliary machines.
- FIG. 1 is a block diagram showing a configuration example of a main part of a conventional power supply device 5C used for such a hybrid vehicle and an electric vehicle.
- the power supply device 5C includes a DC / AC conversion circuit 51 that converts a DC voltage of the high-voltage battery 4 connected to the outside via system relays SRB and SRG into an AC voltage, and a MOSFET ( A control circuit 52 that generates a control signal for turning on / off 511) and a drive circuit 53 that drives the FET 511 by the control signal are provided.
- the AC voltage generated by the conversion by the DC / AC conversion circuit 51 is stepped down by the insulation transformer 54 and rectified by the rectifier circuit 55, and the rectified DC voltage is smoothed by the smoothing circuit 56, and is output from the output terminal 501 to an external low voltage. It is supplied to the battery 6, the power supply ECU 7, and a low voltage load (auxiliaries) not shown.
- the control circuit 52 and the drive circuit 53 are supplied with a low-voltage operating voltage from a converter circuit 57 that converts the voltage of the high-voltage battery 4.
- the control circuit 52 detects the voltage applied to the voltage terminal 502 when the IG (Ignition IV) relay contact 61 is controlled to be turned on by the power supply ECU 7, and starts generating the control signal.
- the control circuit 52 also notifies the power supply ECU 7 of a power supply abnormality signal when detecting an abnormality related to the power supply device 5C.
- the control circuit 52 and the drive circuit 53 that should be electrically insulated from the circuit on the high voltage battery 4 side have a low voltage from the converter circuit 57 connected to the high voltage battery 4. Since the operating voltage is supplied, the circuit is complicated and expensive.
- the operating voltage of the control circuit and the voltage detection circuit corresponding to the control circuit 52 and the drive circuit 53 shown in FIG. Is supplied from an auxiliary power source (low voltage battery) connected to the output terminal of the output terminal via the switch means.
- auxiliary power source low voltage battery
- the switch means is controlled to be turned off from the external ECU, thereby preventing unnecessary discharge of the low voltage battery connected to the output terminal of the DC-DC converter. Is done.
- the control circuit 52 cannot detect that the wiring connecting the output terminal 501 and the low voltage battery 6 is disconnected, and the low voltage that is no longer charged from the power supply device 5C. There was a possibility that the battery 6 would be in an overdischarged state.
- the auxiliary power supply passes through the switch means from the auxiliary power supply to the control circuit that should detect the abnormality. Since the operating voltage is not supplied, there is a problem that it is impossible to detect the abnormality of the wiring itself.
- the present invention has been made in view of such circumstances, and an object thereof is to eliminate the need for a special converter for the operating voltage of a circuit for controlling on / off of a switching element for converting a voltage. And it is providing the power supply device which can discriminate
- a power supply device includes a switching element, a control circuit that generates a control signal for turning on / off the switching element, and a drive circuit that drives the switching element by the control signal generated by the control circuit.
- a power supply device that converts a DC voltage into an external battery from an output terminal and supplies the external battery with a voltage terminal to which a voltage is to be applied from the battery, and the drive circuit is supplied with the voltage from the output terminal
- the control circuit is configured to supply a voltage from the voltage terminal, detect the voltage of the output terminal, and compare the detected voltage with a predetermined voltage. To do.
- the operating voltage is supplied from the external battery to be connected to the output terminal to the control circuit via the voltage terminal, and the operating voltage is supplied from the output terminal to the drive circuit.
- the control circuit to which the voltage is supplied compares the voltage at the output terminal with a predetermined voltage after startup.
- the voltage of the output terminal is detected to be lower than a predetermined voltage, and when the connection is not disconnected, the voltage of the external battery is the voltage of the output terminal. Therefore, it is determined whether or not the external battery is normally connected based on the comparison result of the voltage of the output terminal when the control circuit is activated and the predetermined voltage.
- the operating voltage of the drive circuit that consumes a larger amount of current than that of the control circuit is supplied from the output terminal, the current capacity required for the voltage terminal and the external circuit connected to the voltage terminal is reduced.
- the power supply device includes a switch for turning on / off a voltage supplied from the output terminal to the drive circuit, and the control circuit is configured to turn on the switch each time the power supply device starts up. It is characterized by.
- the control circuit each time the control circuit is activated, the control circuit turns on the operating voltage supplied from the output terminal to the drive circuit.
- the operating voltage supplied from the voltage terminal to the control circuit is turned off, the operating voltage supplied from the output terminal to the drive circuit is also turned off.
- the current consumption seen from the external battery is suppressed to substantially zero when the device itself is in the non-operating state, so that the battery is prevented from being overdischarged.
- a power supply device includes a resistor circuit that supplies a voltage from the voltage terminal to the drive circuit, and a capacitor that is charged with a voltage supplied from the resistor circuit, and the control circuit is configured to start up after itself.
- a first timer that counts the elapsed time of time and a second timer that counts the elapsed time after generation of the control signal, and generates the control signal when the first timer counts the first time
- the switch is turned on when the second timer measures the second time.
- a resistor circuit is interposed between the voltage terminal and the drive circuit, and a capacitor is connected between the connection point of the resistor circuit and the drive circuit and the ground potential.
- the voltage is supplied from the external battery to the drive circuit through the voltage terminal and the resistance circuit until at least the voltage starts to be supplied to the output terminal after the device starts up, and is supplied to the drive circuit in the meantime.
- the amount of current generated is limited by the resistor circuit.
- a power supply device includes a resistor circuit that supplies a voltage from the voltage terminal to the drive circuit, and a capacitor that is charged with a voltage supplied from the resistor circuit, and the control circuit is configured to start up after itself.
- a timer that counts the elapsed time of, and when the timer counts a predetermined time, the control signal is generated, the voltage of the output terminal is detected in time series, and the detected voltage is The switch is turned on when the voltage detected at the start of generation of the control signal is higher than a predetermined threshold value.
- a resistor circuit is interposed between the voltage terminal and the drive circuit, and a capacitor is connected between the connection point of the resistor circuit and the drive circuit and the ground potential.
- the voltage at the voltage terminal is charged to the capacitor through the resistance circuit until a predetermined time elapses after the start of the control circuit, and then the operating voltage is supplied from the capacitor to the drive circuit, and the voltage at the output terminal After the voltage becomes higher than a predetermined threshold value, an operating voltage is supplied from the output terminal to the drive circuit.
- the operating voltage is supplied from the external battery to the drive circuit through the voltage terminal and the resistance circuit until at least the voltage starts to be supplied to the output terminal after the device starts up, The magnitude of the supplied current is limited by the resistance circuit.
- the power supply device is characterized in that the control circuit performs a predetermined notification to the outside based on a comparison result between the detected voltage and the predetermined voltage.
- the output terminal and the external An abnormal connection between batteries is notified to the outside.
- the voltage of the output terminal is When the voltage is detected to be lower than a predetermined voltage and the connection is not disconnected, the voltage of the external battery is detected as the voltage of the output terminal. Therefore, based on the comparison result of the voltage of the output terminal and the predetermined voltage when the control circuit is started Thus, it is determined whether or not the external battery is normally connected. Therefore, no special converter is required for the operating voltage of the circuit for controlling on / off of the switching element for converting the voltage, and the connection state between the output terminal of the device and the external battery is determined. Is possible.
- FIG. 2 is a block diagram showing a configuration example of a main part of the power supply device according to Embodiment 1 of the present invention.
- reference numeral 5A denotes a power supply device.
- the power supply device 5A includes a DC / AC conversion circuit 51 that converts a DC voltage of the high-voltage battery 4 connected to the outside through system relays SRB and SRG into an AC voltage; A control circuit 52 that generates a control signal (herein, a PWM control signal) for turning on / off a MOSFET (hereinafter, referred to simply as FET) 511 included in the AC conversion circuit 51, and the generated PWM And a drive circuit 53 that drives the FET 511 by a control signal.
- the FET 511 may be composed of a plurality of FETs such as a full bridge (H bridge) circuit or a half bridge circuit.
- the AC voltage generated by the conversion by the DC / AC conversion circuit 51 is stepped down by the insulation transformer 54 and rectified by the rectifier circuit 55, and the rectified DC voltage is smoothed by the smoothing circuit 56, and is output from the output terminal 501 to an external low voltage. It is supplied to a battery (battery described in the claims) 6, a power supply ECU 7, and a low voltage load (auxiliaries) not shown.
- the output terminal 501 is connected to the control circuit 52 via an A / D conversion circuit (not shown).
- the low voltage battery 6 is connected to the voltage terminal 502 via an IG relay contact 61 that is controlled to be turned on / off by the power supply ECU 7.
- the voltage circuit 502 is connected to the control circuit 52. Is supplied with an operating voltage (so-called power supply voltage).
- An output terminal 501 to which a voltage is applied from the smoothing circuit 56 and the low-voltage battery 6 is connected to a drive circuit 53 via a voltage relay contact (switch described in claims) 62 controlled to be turned on / off by a control circuit 52.
- the voltage relay contact 62 is controlled to be turned on, the operating voltage is supplied from the output terminal 501 to the drive circuit 53.
- the voltage relay contact 62 When the operating voltage is not supplied to the control circuit 52, the voltage relay contact 62 is off. When the dark current of the drive circuit 53 when the above-described PWM control signal is not given to the drive circuit 53 can be ignored, an operating voltage is supplied from the output terminal 501 to the drive circuit 53 without passing through the voltage relay contact 62. Also good. When the current consumption during the operation of the drive circuit 53 is relatively small, an operating voltage may be supplied from the voltage terminal 502 to the drive circuit 53.
- FIG. 2 the illustration of fuses for ensuring the safety of each device and each circuit is omitted.
- the control circuit 52 includes a CPU 521.
- the CPU 521 stores a ROM 522 for storing information such as a program, a RAM 523 for storing temporarily generated information, and timers for measuring various times (first and second claims).
- Timer) 524 and I / O port 525 for inputting / outputting each unit in its own device (power supply device 5A) are connected to each other by bus.
- the I / O port 525 is used, for example, when the CPU 521 controls the voltage relay contact 62 to be turned on / off, or detects the voltage of the output terminal 501 via the A / D conversion circuit described above.
- the CPU 521 uses the I / O port 525 or a generation circuit (not shown) to generate the above-described PWM control signal in a timely manner by a method known per se.
- the generated PWM control signal is supplied to the drive circuit 53.
- the drive circuit 53 has a pulse transformer (not shown), amplifies the PWM control signal given from the control circuit 52, and gives the amplified PWM control signal to the gate of the FET 511 via the pulse transformer, thereby the FET 511. Is driven to the on / off state.
- the CPU 521 detects an abnormality related to the connection of the power supply 5A, the CPU 521 notifies the power supply ECU 7 of a power connection abnormality signal.
- FIG. 3 is a flowchart showing a processing procedure of the CPU 521 that detects the voltage of the output terminal 501 and compares it with a predetermined voltage.
- the process of FIG. 3 is started when the IG relay contact 61 is controlled to be turned on and the operating voltage (the voltage of the low voltage battery 6) is supplied from the voltage terminal 502 to the control circuit 52.
- the CPU 521 controls the voltage relay contact 62 to be turned on via the I / O port 525 (S16) and supplies the operating voltage to the drive circuit 53. Thereafter, the CPU 521 detects the voltage of the output terminal 501 (S17), and determines whether or not the detected voltage is equal to or higher than a predetermined voltage (for example, 6V as a half of 12V) (S18).
- a predetermined voltage for example, 6V as a half of 12V
- the CPU 521 terminates the process of FIG. 3 without executing anything.
- the detected voltage is not equal to or higher than the predetermined voltage (S18: NO)
- the CPU 521 outputs a power connection abnormality signal to the power supply ECU 7 (S19), and ends the process of FIG.
- the operating voltage is supplied from the external low voltage battery to be connected to the output terminal to the control circuit via the IG relay contact and the voltage terminal, and the voltage relay contact from the output terminal.
- An operation voltage is supplied to the drive circuit via the control circuit, and the control circuit supplied with the operation voltage compares and determines the voltage of the output terminal detected after the activation and a predetermined voltage.
- the control circuit supplied with the operation voltage compares and determines the voltage of the output terminal detected after the activation and a predetermined voltage.
- control circuit each time the control circuit is activated, the control circuit turns on the voltage relay contact, thereby turning on the operating voltage supplied from the output terminal to the drive circuit.
- the voltage relay contact When no operating voltage is supplied to the control circuit, the voltage relay contact is turned off. Accordingly, since the current consumption seen from the external battery is suppressed to substantially zero when the device is in the non-operating state, it is possible to prevent the battery from being overdischarged.
- the operating voltage is supplied from the output terminal 501 to the drive circuit 53 via the voltage relay contact 62, whereas in the second embodiment, before the voltage relay contact 62 is controlled to be turned on.
- an operating voltage is supplied from the voltage terminal 502 to the drive circuit 53 through a resistor circuit.
- the operating voltage is exclusively supplied from the low-voltage battery 6 to the driving circuit 53 from when the operating voltage starts to be supplied to the control circuit 52 until the DC voltage converted by the device is output to the output terminal 501. Will continue to be supplied.
- the magnitude of the current that can be supplied from the output terminal 501 to the drive circuit 53 may be restricted during this period, and this restriction is avoided in the second embodiment.
- FIG. 4 is a block diagram showing a configuration example of a main part of the power supply device according to Embodiment 2 of the present invention.
- reference numeral 5B denotes a power supply apparatus.
- the power supply apparatus 5B includes a DC / AC conversion circuit 51 that converts a DC voltage of the high-voltage battery 4 connected to the outside via system relays SRB and SRG into an AC voltage, and the DC / AC A control circuit 52 that generates a PWM control signal for turning on / off the FET 511 included in the AC conversion circuit 51, and a drive circuit 53 that drives the FET 511 by the generated PWM control signal are provided.
- the power supply device 5B also includes a resistor (a resistor circuit described in claims) 58 that supplies a voltage from the voltage terminal 502 to the drive circuit 53, and a capacitor 59 that is charged with the voltage supplied from the resistor 58.
- a resistor a resistor circuit described in claims
- the resistor 58 is interposed between the voltage terminal 502 and the drive circuit 53, and the capacitor 59 is connected between the connection point of the resistor 58 and the drive circuit 53 and the ground potential.
- Other connection configurations are the same as those in FIG. 2 of the first embodiment.
- FIG. FIG. 5 is a timing chart showing the operation timing of the main part after the power supply device 5B according to the second embodiment of the present invention is started.
- the horizontal axis is the same time axis. From the top of the figure, the on / off state of the IG relay contact 61, the voltage of the capacitor 59, and the PWM that the control circuit 52 gives to the drive circuit 53 The on / off state of the control signal, the voltage at the output terminal 501 and the on / off state of the voltage relay contact 62 are shown on the vertical axis.
- the control circuit 52 When the IG relay contact 61 is controlled to be turned on at time T0, the control circuit 52 is activated to start appropriate control. On the other hand, since the capacitor 59 is charged with the voltage supplied from the voltage terminal 502 via the resistor 58, the voltage of the capacitor 59 rises in a convex charging curve. During this time, the resistor 58 limits the magnitude of the charging current that flows from the voltage terminal 502 to the capacitor 59.
- the control circuit 52 starts generating the PWM control signal. Then, the drive circuit 53 supplied with the operating voltage from the capacitor 59 amplifies the PWM control signal given from the control circuit 52 and starts driving the FET 511 in the on / off state. As a result, the capacitor 59 is discharged, and the voltage of the capacitor 59 is lowered with a downward convex discharge curve.
- FIG. 6 is a flowchart showing the processing procedure of the CPU 521 that measures the elapsed time after startup and performs predetermined control. The process of FIG. 6 is started when the IG relay contact 61 is controlled to be turned on and the operating voltage (voltage of the low voltage battery 6) is supplied from the voltage terminal 502 to the control circuit 52.
- the CPU 521 starts timing using the timer 524 (S21). Thereafter, the CPU 521 determines whether or not the timer 524 has timed the first time (S22), and waits until the first time is timed (S22: NO).
- the first time here is the time from time T0 to time T1 shown in FIG.
- the CPU 521 starts generating a PWM control signal using a method known per se (S23) and starts counting again using the timer 524. (S24).
- the CPU 521 determines whether or not the timer 524 has timed the second time (S25), and waits until the second time is timed (S25: NO).
- the second time is the time from time T1 to time T3 shown in FIG.
- the CPU 521 controls the voltage relay contact 62 to be on (S26). Since the processing from step S26 to S29 including this step is the same as the processing from step S16 to S19 in FIG. 3 of the first embodiment, the description thereof is omitted.
- a resistor is interposed between the voltage terminal and the drive circuit, and a capacitor is connected between the connection point of the resistor and the drive circuit and the ground potential.
- an operating voltage is supplied from the capacitor to the driving circuit, and then the operating voltage is supplied from the output terminal to the driving circuit. Therefore, the voltage is supplied to the drive circuit from the external low-voltage battery via the voltage terminal and the resistor until the voltage starts to be supplied to the output terminal at least after the device starts up, and is supplied to the drive circuit in the meantime.
- the magnitude of the current that is generated can be limited by a resistor.
- the CPU 521 detects the voltage of the output terminal 501 and compares it with a predetermined voltage, and outputs a power connection abnormality signal according to the comparison result.
- the present invention is limited to this. It is not a thing.
- the voltage of the output terminal 501 is compared with a predetermined voltage by a comparison circuit configured by hardware, and a power connection abnormality signal is output according to a comparison result at a timing at which these voltages should be compared. You may make it do.
- FIG. 7 is a timing chart showing the operation timing of the main part after the power supply device 5B according to Embodiment 3 of the present invention is started.
- the same time axis is taken as the horizontal axis.
- the IG relay contact 61 is turned on / off, the voltage of the capacitor 59, and the control circuit 52 from the top.
- the on / off state of the PWM control signal applied to the drive circuit 53, the voltage at the output terminal 501 and the on / off state of the voltage relay contact 62 are shown on the vertical axis.
- the control circuit 52 After the IG relay contact 61 is controlled to be turned on at time T0, the control circuit 52 starts generating the PWM control signal at time T1, and the DC voltage converted by itself is output to the output terminal 501 at time T2.
- the operation up to is the same as in the case of FIG. 5 in the second embodiment.
- charging of the low voltage battery 6 is started, and the voltage of the output terminal 501 starts to rise toward the full charge voltage.
- the voltage relay contact 62 is controlled to be turned on, and the drive circuit 53 operates from the output terminal 501.
- a voltage is supplied.
- the magnitude of the predetermined threshold value may be appropriately changed according to the state of charge of the low-voltage battery 6 (for example, the battery voltage or the remaining capacity before the start of charging).
- FIG. 8 is a flowchart showing a processing procedure of the CPU 521 for storing the voltage of the output terminal 501 at the start of generation of the PWM control signal
- FIG. 9 shows the voltage of the output terminal 501 detected in time series and the stored voltage. It is a flowchart which shows the process sequence of CPU521 which compares.
- step S31 the processing from step S31 to S33 including this step is the same as the processing from step S21 to S23 in FIG. 6 of the second embodiment, the description thereof is omitted.
- the CPU 521 After starting the generation of the PWM control signal in step S33, the CPU 521 detects the voltage of the output terminal 501 (S34), stores the detected voltage in the RAM 523 (S35), and ends the process of FIG.
- the CPU 521 detects the voltage of the output terminal 501 (S41), and calculates a voltage difference obtained by subtracting the voltage stored in the RAM 523 from the detected voltage of the output terminal 501. (S42). Thereafter, the CPU 521 determines whether or not the calculated voltage difference is equal to or larger than a predetermined threshold (Vth) (S43). If the voltage difference is equal to or smaller than the predetermined threshold (S43: YES), the voltage relay contact 62 is set. Control is turned on (S44).
- Vth a predetermined threshold
- step S44 When the voltage difference is not equal to or less than the predetermined threshold (S43: NO), or when the process of step S44 is completed, the CPU 521 detects the voltage of the output terminal 501 (S47). Since the processing from step S47 to S49 including this step is the same as the processing from step S27 to S29 in FIG. 6 of the second embodiment, the description thereof is omitted.
- the control circuit when the first time has elapsed after the activation of the control circuit, the control circuit starts generating the control signal, and then When the voltage of the output terminal detected every 250 milliseconds is higher than the voltage detected at the start of generation of the control signal by a predetermined threshold (Vth) or more, the control circuit controls the voltage relay contact to be turned on. As a result, the voltage at the voltage terminal (voltage of the low voltage battery) is charged to the capacitor through the resistor until the first time elapses after the start of the control circuit, and then the operating voltage is transferred from the capacitor to the drive circuit.
- Vth predetermined threshold
- the operating voltage is supplied from the output terminal to the drive circuit. Therefore, the voltage is supplied to the drive circuit from the external low-voltage battery via the voltage terminal and the resistor until the voltage starts to be supplied to the output terminal at least after the device starts up, and is supplied to the drive circuit in the meantime.
- the magnitude of the current that is generated can be limited by a resistor.
- the external power supply ECU since the power connection abnormality signal is notified to the outside, it is possible to notify the outside of the connection abnormality between the output terminal and the external battery.
- the generation of the PWM control signal is started when the first time has elapsed after the activation of the control circuit 52.
- Detection may be performed in time series, and generation of the PWM control signal may be started when the detected voltage is equal to or higher than a predetermined voltage.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
- Secondary Cells (AREA)
Abstract
Description
これにより、出力端子及び外部のバッテリ間の接続が外れている場合は、出力端子の電圧が所定電圧より低く検出され、上記接続が外れていない場合は、外部のバッテリの電圧が出力端子の電圧として検出されるため、制御回路の起動時の出力端子の電圧及び所定電圧の比較結果に基づいて、外部のバッテリが正常に接続されているか否かが判定される。
また、制御回路と比較して消費電流が大きい駆動回路の動作電圧が出力端子から供給されるため、電圧端子及び該電圧端子に接続される外部回路に要求される電流容量が小さくなる。
これにより、自装置が非動作状態にあるときに外部のバッテリから見た消費電流が略ゼロに抑えられるため、バッテリが過放電状態となることが防止される。
これにより、制御回路の起動後から第1時間が経過するまでの間、抵抗回路を介して電圧端子の電圧がコンデンサに充電され、第1時間の経過後から更に第2時間が経過するまでの間、コンデンサから駆動回路に動作電圧が供給され、その後、出力端子から駆動回路に動作電圧が供給される。このため、自装置が起動してから少なくとも出力端子に電圧を供給し始めるまでの間、外部のバッテリから電圧端子及び抵抗回路を介して駆動回路に電圧が供給され、且つその間に駆動回路に供給される電流の大きさが抵抗回路によって制限される。
これにより、制御回路の起動後から所定時間が経過するまでの間、抵抗回路を介して電圧端子の電圧がコンデンサに充電され、その後、コンデンサから駆動回路に動作電圧が供給され、出力端子の電圧が所定の閾値以上高くなった後は、出力端子から駆動回路に動作電圧が供給される。このため、自装置が起動してから少なくとも出力端子に電圧を供給し始めるまでの間、外部のバッテリから電圧端子及び抵抗回路を介して駆動回路に動作電圧が供給され、且つその間に駆動回路に供給される電流の大きさが抵抗回路によって制限される。
従って、電圧を変換するためのスイッチング素子のオン/オフを制御する回路の動作電圧用に特別なコンバータが不要であり、且つ、自装置の出力端子及び外部のバッテリ間の接続状態を判別することが可能となる。
(実施の形態1)
図2は、本発明の実施の形態1に係る電源装置の要部構成例を示すブロック図である。図中5Aは電源装置であり、電源装置5Aは、システムリレーSRB,SRGを介して外部に接続された高圧バッテリ4の直流電圧を交流電圧に変換するDC/AC変換回路51と、該DC/AC変換回路51が有するMOSFET(請求項に記載のスイッチング素子;以下単にFETという)511をオン/オフさせるための制御信号(ここではPWM制御信号)を生成する制御回路52と、生成されたPWM制御信号によってFET511を駆動する駆動回路53とを備える。FET511は、例えばフルブリッジ(Hブリッジ)回路又はハーフブリッジ回路のように複数のFETで構成されるものであってもよい。
図3は、出力端子501の電圧を検出して所定電圧と比較するCPU521の処理手順を示すフローチャートである。図3の処理は、IGリレー接点61がオンに制御されて、電圧端子502から制御回路52に動作電圧(低圧バッテリ6の電圧)が供給されたときに起動される。
尚、起動時に上記の接続に係る異常を検出しない場合(例えば、後述するステップS18で判定結果がYESの場合)、CPU521は、それ自体公知の方法を用いてPWM制御信号の生成を開始する(フローチャートには図示せず)。
これにより、出力端子及び外部のバッテリ間の接続が外れている場合(又は外れていない場合)は、出力端子の電圧が所定電圧より低く(又は所定電圧以上として)検出されるため、制御回路の起動時の出力端子の電圧及び所定電圧の比較結果に基づいて、外部のバッテリが正常に接続されているか否かが判定される。
従って、電圧を変換するためのスイッチング素子のオン/オフを制御する回路の動作電圧用に特別なコンバータが不要であり、且つ、自装置の出力端子及び外部のバッテリ間の接続状態を判別することが可能となる。また、制御回路と比較して消費電流が大きい駆動回路の動作電圧が出力端子から供給されるため、電圧端子及び該電圧端子に接続される外部回路に要求される電流容量を小さくすることが可能となる。
従って、自装置が非動作状態にあるときに外部のバッテリから見た消費電流が略ゼロに抑えられるため、バッテリが過放電状態となるのを防止することが可能となる。
実施の形態1が、出力端子501から電圧リレー接点62を介して駆動回路53に動作電圧を供給する形態であるのに対し、実施の形態2は、電圧リレー接点62をオンに制御する前に、電圧端子502から抵抗回路を介して駆動回路53に動作電圧を供給する形態である。実施の形態1では、制御回路52に動作電圧が供給され始めてから、自装置が変換した直流電圧が出力端子501に出力されるまでの間、駆動回路53に対して専ら低圧バッテリ6から動作電圧が供給され続ける。用途によっては、この間に出力端子501から駆動回路53に供給可能な電流の大きさが制約される場合があり、本実施の形態2ではこの制約を回避する。
図5は、本発明の実施の形態2に係る電源装置5Bの起動後における主要部の動作タイミングを示すタイミングチャートである。図5に示す5つのチャートでは、何れも同一の時間軸を横軸としてあり、図の上からIGリレー接点61のオン/オフ状態、コンデンサ59の電圧、制御回路52が駆動回路53に与えるPWM制御信号のオン/オフ状態、出力端子501の電圧、及び電圧リレー接点62のオン/オフ状態を縦軸に示してある。
図6は、起動後の経過時間を計時して所定の制御を行うCPU521の処理手順を示すフローチャートである。図6の処理は、IGリレー接点61がオンに制御されて、電圧端子502から制御回路52に動作電圧(低圧バッテリ6の電圧)が供給されたときに起動される。
これにより、制御回路の起動後から第1時間が経過するまでの間、抵抗器を介して電圧端子の電圧(低圧バッテリの電圧)がコンデンサに充電され、第1時間の経過後から更に第2時間が経過するまでの間、コンデンサから駆動回路に動作電圧が供給され、その後、出力端子から駆動回路に動作電圧が供給される。
従って、自装置が起動してから少なくとも出力端子に電圧を供給し始めるまでの間、外部の低圧バッテリから電圧端子及び抵抗器を介して駆動回路に電圧を供給し、且つその間に駆動回路に供給される電流の大きさを抵抗器によって制限することが可能となる。
実施の形態2が、制御信号の生成開始後に第2時間が経過した場合、制御回路52が電圧リレー接点62をオンに制御する形態であるのに対し、実施の形態3は、制御信号の生成開始後に出力端子501の電圧が所定の閾値以上高くなった場合、制御回路52が電圧リレー接点62をオンに制御する形態である。
図8は、PWM制御信号の生成開始時の出力端子501の電圧を記憶するCPU521の処理手順を示すフローチャートであり、図9は、時系列的に検出した出力端子501の電圧と記憶した電圧とを比較するCPU521の処理手順を示すフローチャートである。
これにより、制御回路の起動後から第1時間が経過するまでの間、抵抗器を介して電圧端子の電圧(低圧バッテリの電圧)がコンデンサに充電され、その後、コンデンサから駆動回路に動作電圧が供給され、出力端子の電圧が所定の閾値(Vth)以上高くなった後は、出力端子から駆動回路に動作電圧が供給される。
従って、自装置が起動してから少なくとも出力端子に電圧を供給し始めるまでの間、外部の低圧バッテリから電圧端子及び抵抗器を介して駆動回路に電圧を供給し、且つその間に駆動回路に供給される電流の大きさを抵抗器によって制限することが可能となる。
501 出力端子
502 電圧端子
511 FET
52 制御回路
521 CPU
522 ROM
523 RAM
524 タイマ
53 駆動回路
58 抵抗器
59 コンデンサ
6 低圧バッテリ
61 IGリレー接点
62 電圧リレー接点
Claims (5)
- スイッチング素子と、該スイッチング素子をオン/オフさせるための制御信号を生成する制御回路と、該制御回路が生成した制御信号によって前記スイッチング素子を駆動する駆動回路とを備え、直流電圧を電圧変換して出力端子から外部のバッテリに供給する電源装置において、
前記バッテリから電圧が印加されるべき電圧端子を備え、
前記駆動回路は、前記出力端子から電圧が供給されるようにしてあり、
前記制御回路は、
前記電圧端子から電圧が供給されるようにしてあり、
前記出力端子の電圧を検出し、検出した電圧及び所定電圧を比較するようにしてあること
を特徴とする電源装置。 - 前記出力端子から前記駆動回路に供給される電圧をオン/オフするスイッチを備え、
前記制御回路は、自身の起動の都度、前記スイッチをオンさせるようにしてあること
を特徴とする請求項1に記載の電源装置。 - 前記電圧端子から前記駆動回路に電圧を供給する抵抗回路と、
該抵抗回路から供給される電圧で充電されるコンデンサとを備え、
前記制御回路は、
自身の起動後の経過時間を計時する第1タイマと、
前記制御信号の生成開始後の経過時間を計時する第2タイマとを有し、
前記第1タイマが第1時間を計時した場合、前記制御信号を生成するようにしてあり、
前記第2タイマが第2時間を計時した場合、前記スイッチをオンさせるようにしてあること
を特徴とする請求項2に記載の電源装置。 - 前記電圧端子から前記駆動回路に電圧を供給する抵抗回路と、
該抵抗回路から供給される電圧で充電されるコンデンサとを備え、
前記制御回路は、
自身の起動後の経過時間を計時するタイマを有し、
該タイマが所定時間を計時した場合、前記制御信号を生成するようにしてあり、
前記出力端子の電圧を時系列的に検出し、検出した電圧が、前記制御信号の生成開始の際に検出した電圧より所定の閾値以上高い場合、前記スイッチをオンさせるようにしてあること
を特徴とする請求項2に記載の電源装置。 - 前記制御回路は、検出した電圧及び前記所定電圧の比較結果に基づいて、外部に所定の報知を行うようにしてあることを特徴とする請求項1から4の何れか1項に記載の電源装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112012006152.7T DE112012006152T5 (de) | 2012-03-29 | 2012-12-28 | Stromversorgungsvorrichtung |
CN201280071767.2A CN104205593B (zh) | 2012-03-29 | 2012-12-28 | 电源装置 |
US14/387,136 US9499063B2 (en) | 2012-03-29 | 2012-12-28 | Power-supply device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012077115A JP5751201B2 (ja) | 2012-03-29 | 2012-03-29 | 電源装置 |
JP2012-077115 | 2012-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013145495A1 true WO2013145495A1 (ja) | 2013-10-03 |
Family
ID=49258824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/084115 WO2013145495A1 (ja) | 2012-03-29 | 2012-12-28 | 電源装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9499063B2 (ja) |
JP (1) | JP5751201B2 (ja) |
CN (1) | CN104205593B (ja) |
DE (1) | DE112012006152T5 (ja) |
WO (1) | WO2013145495A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5717901B1 (ja) * | 2014-05-20 | 2015-05-13 | 三菱電機株式会社 | 車両用電力変換装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9525353B2 (en) * | 2014-09-19 | 2016-12-20 | Sanken Electric Co., Ltd. | Switching power-supply device for performing control of output voltage switching operation |
CN104698316B (zh) * | 2015-03-09 | 2017-09-26 | 艾德克斯电子(南京)有限公司 | 连接状态检测电路、电池内阻检测装置、电池测试仪 |
KR101821327B1 (ko) * | 2017-05-30 | 2018-01-24 | 콘티넨탈 오토모티브 게엠베하 | 암전류 저감이 가능한 입력 회로 |
TWI664799B (zh) * | 2018-02-13 | 2019-07-01 | 友達光電股份有限公司 | 電壓轉換器 |
US10992231B1 (en) * | 2019-12-17 | 2021-04-27 | M3 Technology Inc. | Buck-boost converter and control method |
US20210249872A1 (en) * | 2020-02-06 | 2021-08-12 | Samsung Sdi Co., Ltd. | Battery system |
KR102620299B1 (ko) * | 2021-09-27 | 2023-12-29 | 주식회사 유라코퍼레이션 | 저전압 직류 변환장치의 암전류 차단 장치 및 그 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07107601A (ja) * | 1993-09-30 | 1995-04-21 | Nippondenso Co Ltd | 電気自動車用充電装置 |
JP2003284320A (ja) * | 2002-03-22 | 2003-10-03 | Fuji Electric Co Ltd | 車載用dc−dcコンバータ |
JP2008131819A (ja) * | 2006-11-24 | 2008-06-05 | Toyota Industries Corp | Dc−dcコンバータの出力制御装置、dc−dcコンバータおよびその制御方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4024420B2 (ja) * | 1999-03-17 | 2007-12-19 | アイシン・エィ・ダブリュ株式会社 | 異常検出装置及び異常検出方法 |
JP4311687B2 (ja) * | 2006-10-06 | 2009-08-12 | 日本テキサス・インスツルメンツ株式会社 | 電源回路およびバッテリ装置 |
JP4375472B2 (ja) * | 2007-10-23 | 2009-12-02 | トヨタ自動車株式会社 | 車両の充電制御装置 |
CN101714647B (zh) * | 2008-10-08 | 2012-11-28 | 株式会社牧田 | 电动工具用蓄电池匣以及电动工具 |
CN201501357U (zh) * | 2009-09-29 | 2010-06-09 | 上海汽车集团股份有限公司 | 车载设备供电装置 |
CN101710630B (zh) * | 2009-12-14 | 2011-08-10 | 奇瑞汽车股份有限公司 | 一种车载锂电池智能充电方法及装置 |
CN201749331U (zh) * | 2010-08-09 | 2011-02-16 | 奇瑞汽车股份有限公司 | 一种车载电子设备的电源控制装置 |
CN202106836U (zh) * | 2011-04-27 | 2012-01-11 | 上海汽车集团股份有限公司 | 混合动力充电车 |
-
2012
- 2012-03-29 JP JP2012077115A patent/JP5751201B2/ja not_active Expired - Fee Related
- 2012-12-28 US US14/387,136 patent/US9499063B2/en active Active
- 2012-12-28 WO PCT/JP2012/084115 patent/WO2013145495A1/ja active Application Filing
- 2012-12-28 CN CN201280071767.2A patent/CN104205593B/zh not_active Expired - Fee Related
- 2012-12-28 DE DE112012006152.7T patent/DE112012006152T5/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07107601A (ja) * | 1993-09-30 | 1995-04-21 | Nippondenso Co Ltd | 電気自動車用充電装置 |
JP2003284320A (ja) * | 2002-03-22 | 2003-10-03 | Fuji Electric Co Ltd | 車載用dc−dcコンバータ |
JP2008131819A (ja) * | 2006-11-24 | 2008-06-05 | Toyota Industries Corp | Dc−dcコンバータの出力制御装置、dc−dcコンバータおよびその制御方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5717901B1 (ja) * | 2014-05-20 | 2015-05-13 | 三菱電機株式会社 | 車両用電力変換装置 |
JP2015220900A (ja) * | 2014-05-20 | 2015-12-07 | 三菱電機株式会社 | 車両用電力変換装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2013208000A (ja) | 2013-10-07 |
CN104205593B (zh) | 2017-08-25 |
DE112012006152T5 (de) | 2015-01-15 |
CN104205593A (zh) | 2014-12-10 |
US20150084580A1 (en) | 2015-03-26 |
US9499063B2 (en) | 2016-11-22 |
JP5751201B2 (ja) | 2015-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5751201B2 (ja) | 電源装置 | |
CN109428473B (zh) | 车辆的电源系统 | |
EP2308714A2 (en) | Power supply device and method for making decision as to contactor weld of power supply device | |
JP5725544B2 (ja) | 電力変換装置および電力制御方法 | |
JP5673633B2 (ja) | 車載充電制御装置 | |
US8487558B2 (en) | Electric vehicle | |
CN111226364B (zh) | 电源装置、电力控制装置、电源装置的继电器判定方法 | |
JP4715928B2 (ja) | 昇降圧コンバータ | |
US8467938B2 (en) | Electric power steering apparatus | |
CN109428389B (zh) | 车辆的电源系统 | |
CN108155828B (zh) | 双向低电压dc到ac逆变器 | |
JP5835136B2 (ja) | 車載充電制御装置 | |
JP6751512B2 (ja) | 車載用電源装置 | |
JP2014110666A (ja) | 放電制御システム及び放電装置 | |
JP2010051111A (ja) | モータ駆動装置 | |
JP6187180B2 (ja) | 電力変換システム | |
WO2019239842A1 (ja) | 車載用の電源制御装置および車載用電源システム | |
JP5835097B2 (ja) | 電源装置 | |
JP2013070547A (ja) | 電力変換装置 | |
JP5645679B2 (ja) | 電圧変換装置 | |
CN110168889B (zh) | 车载用控制装置及车载用电源装置 | |
JP6068199B2 (ja) | 平滑コンデンサ放電制御装置 | |
JP2012115018A (ja) | 電力制御装置 | |
JP2009195091A (ja) | 電力装置およびこれを備える駆動装置,車両並びに電力装置の制御方法 | |
JP7348028B2 (ja) | モータ駆動装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12873370 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14387136 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120120061527 Country of ref document: DE Ref document number: 112012006152 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12873370 Country of ref document: EP Kind code of ref document: A1 |