WO2015181991A1 - 充電器 - Google Patents
充電器 Download PDFInfo
- Publication number
- WO2015181991A1 WO2015181991A1 PCT/JP2014/064546 JP2014064546W WO2015181991A1 WO 2015181991 A1 WO2015181991 A1 WO 2015181991A1 JP 2014064546 W JP2014064546 W JP 2014064546W WO 2015181991 A1 WO2015181991 A1 WO 2015181991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- output
- forced stop
- circuit
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
-
- H02J4/25—
-
- H02J7/60—
-
- H02J7/80—
-
- H02J7/927—
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
Definitions
- the present invention relates to a charger suitable as an in-vehicle charger or the like.
- Patent Document 1 discloses a technique related to charging of a battery of an electric vehicle.
- the charger may perform an abnormal charging operation. As a result, an electric shock accident may occur.
- the charger may be provided with a forcible stop circuit that forcibly stops the charging by detecting the abnormality of the charging operation and forcibly stopping the inverter.
- a technique related to inverter stop control for example, Patent Document 2 is available.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technical means that makes it possible to reliably stop charging when an abnormality in charging operation is detected.
- the present invention provides a power conversion unit that converts AC power into DC power and supplies the vehicle-mounted battery, a forced stop unit that forcibly stops the power conversion unit when a forced stop signal is acquired, and the forced stop unit
- a charger comprising: an operation confirmation unit that confirms whether or not the device operates normally and outputs information indicating the result.
- the forced stop means it is confirmed whether or not the forced stop means operates normally, and information indicating the result is output.
- the output information is displayed, the user can recognize that the forced stop means does not operate normally.
- the user can take measures such that the forced stop means operates normally or a forced stop. Therefore, according to the charger of the present invention, it is possible to forcibly stop charging when an abnormality in the charging operation is detected.
- FIG. 2 is a circuit diagram showing a configuration of a DC / DC converter 10 of the charger 1.
- FIG. 3 is a block diagram illustrating a configuration of a charger control unit 40 of the charger 1.
- FIG. 3 is a block diagram showing a configuration of a safety control unit 42 of the charger 1.
- FIG. 4 is a time chart showing an operation example of a check unit 422 of the charger 1. It is a time chart which shows the operation example of the check part 422 when the mask 43 of the charger 1 is not operating normally.
- FIG. 1 is a diagram showing a configuration of a charger 1 according to the first embodiment of the present invention.
- the charger 1 is a device that charges the battery 2.
- the battery 2 is an in-vehicle battery mounted on an electric vehicle, for example.
- the charger 1 is mounted on an electric vehicle together with the battery 2, for example.
- the AC power source 3 is, for example, a 100V commercial AC power source distributed to each home.
- the charger 1 includes a DC / DC (direct current / direct current) converter 10, an AC / DC (alternating current / direct current) converter 20, an electrolytic capacitor 30, and a charger controller 40.
- the AC power supply 3 is connected to the input terminal of the AC / DC converter 20.
- the AC / DC converter 20 is a circuit that converts AC power supplied from the AC power source 3 into DC power and outputs the DC power.
- the AC / DC converter 20 includes a voltage detector that detects a voltage in the circuit and a current detector that detects a current in the circuit.
- the AC / DC converter 20 delivers the detection results of the voltage detector and the current detector to the charger control unit 40.
- the AC / DC converter 20 includes a switching element such as a MOSFET (Metal Oxide Semiconductor Field Effect Transistor; field effect transistor having a metal-oxide film-semiconductor structure).
- MOSFET Metal Oxide Semiconductor Field Effect Transistor
- the AC / DC converter 20 operates by being supplied with a gate voltage for turning on / off the switching element from the charger control unit 40.
- the electrolytic capacitor 30 is connected in parallel to the output terminal of the AC / DC converter 20.
- the electrolytic capacitor 30 smoothes the output voltage of the AC / DC converter 20.
- the output terminal of the AC / DC converter 20 is connected to the input terminal of the DC / DC converter 10 via the electrolytic capacitor 30.
- the battery 2 is connected to the output terminal of the DC / DC converter 10.
- the DC / DC converter 10 converts a DC power output from the AC / DC converter 20 and supplied to the DC / DC converter 10 through the electrolytic capacitor 30 into a DC power to be supplied to the battery 2 and outputs the DC power. It is.
- FIG. 2 is a circuit diagram showing the configuration of the DC / DC converter 10.
- the DC / DC converter 10 includes an inverter 11 and a rectifier circuit 12.
- the inverter 11 includes switching elements (n-channel MOSFETs in FIG. 2) 111 to 114, freewheeling diodes 116 to 119, a transformer 13, a capacitor 14, and a current detector 15.
- the drain of the switching element 111 and the drain of the switching element 113 are connected to the high potential side DC bus Pi on the input side.
- the source of the switching element 112 and the source of the switching element 114 are connected to the low potential side DC bus Ni on the input side.
- the source of the switching element 111 is connected to the drain of the switching element 112. This connection point is connected to one end of the primary side winding of the transformer 13.
- the source of the switching element 113 is connected to the drain of the switching element 114.
- This connection point is connected to one electrode plate of the capacitor 14.
- the other electrode plate of the capacitor 14 is connected to the other end of the primary side winding of the transformer 13 via the current detector 15.
- the current detector 15 is a device that detects an alternating current generated in the primary side winding of the transformer 13.
- the current detector 15 delivers the detection result (data indicating the current value) to the charger control unit 40.
- the free-wheeling diodes 116 to 119 are connected in antiparallel to the switching elements 111
- a gate voltage for turning on / off the switching elements 111 to 114 is supplied from the charger control unit 40 to each gate.
- the inverter 11 converts the input DC power into AC power and outputs the AC power to the secondary winding of the transformer 13. This will be described in more detail.
- the switching elements 111 and 114 are turned on and the switching elements 112 and 113 are turned off, positive charges are stored in the electrode plate on the transformer 13 side in the capacitor 14. After that, when the switching elements 111 and 114 are turned off and the switching elements 112 and 113 are turned on, the positive charges stored in the electrode plate on the transformer 13 side in the capacitor 14 are discharged to the switching element 112 side, and the transformer 13 in the capacitor 14 is discharged.
- a positive charge is stored in the opposite electrode plate. Thereafter, when switching elements 111 and 114 are turned on and switching elements 112 and 113 are turned off, positive charges stored in the electrode plate on the side opposite to transformer 13 in capacitor 14 are discharged to switching element 114 side, and capacitor 14 A positive charge is stored in the electrode plate on the transformer 13 side.
- AC power is generated in the primary winding of the transformer 13.
- the transformer 13 induces AC power generated in the primary winding to the secondary winding and outputs it.
- the inverter 11 outputs AC power.
- the transformer 13 insulates the input side and the output side in the inverter 11 (that is, the AC power source 3 and the battery 2 are insulated).
- the rectifier circuit 12 is a circuit that converts AC power induced in the secondary winding of the transformer 13 (that is, the output of the inverter 11) into DC power and outputs the DC power.
- the rectifier circuit 12 includes diodes 121 to 124, a capacitor 125, and a current detector 126.
- the diodes 121 to 124 form a full-wave rectification diode bridge. This will be described in more detail.
- the cathode of the diode 121 and the cathode of the diode 123 are connected to the output-side high potential side DC bus Po.
- the anode of the diode 122 and the anode of the diode 124 are connected to the low potential side DC bus No on the output side.
- the anode of the diode 121 is connected to the cathode of the diode 122.
- the anode of the diode 123 is connected to the cathode of the diode 124.
- a connection point between the diode 121 and the diode 122 is connected to one end of the secondary winding of the transformer 13, and a connection point between the diode 123 and the diode 124 is connected to the other end of the secondary winding of the transformer 13. It is connected.
- the capacitor 125 is inserted between the high potential side DC bus Po on the output side and the low potential DC bus No on the output side. Capacitor 125 smoothes the voltage rectified by diodes 121-124.
- a current detector 126 is provided on the low potential side DC bus No on the output side between the diode bridge formed by the diodes 121 to 124 and the capacitor 125.
- the current detector 126 is a device that detects the output current of the rectifier circuit 12.
- the current detector 126 delivers the detection result (data indicating the current value) to the charger control unit 40.
- the charger control unit 40 is a circuit that controls each unit of the charger 1.
- FIG. 3 is a block diagram illustrating a configuration of the charger control unit 40. As shown in FIG. 3, the charger controller 40 includes a DC / DC converter controller 41, a safety controller 42, a mask 43, and a gate drive unit 44.
- the charger control unit 40 includes means for controlling the AC / DC converter 20, but the description thereof is omitted because it is not related to the present invention.
- the DC / DC converter control unit 41 is a circuit that controls a charging operation (specifically, a power conversion operation) by the DC / DC converter 10 (more precisely, the inverter 11). More specifically, the DC / DC converter control unit 41 applies pulses to the switching elements 111 to 114 based on detection results (data indicating current values) of the current detectors 15 and 126 and information from the external control unit 4. Generate a signal.
- the external control unit 4 is, for example, an ECU (engine control unit) of an electric vehicle on which the charger 1 is mounted. Examples of the information from the external control unit 4 given to the DC / DC converter control unit 41 include information indicating charging start.
- the pulse signal generated by the DC / DC converter control unit 41 is a signal for controlling the charging operation, and specifically, a signal for controlling the on / off timing of the switching elements 111 to 114.
- the DC / DC converter control unit 41 outputs the generated pulse signal for each of the switching elements 111 to 114 to the mask 43.
- the mask 43 is a circuit that forcibly cuts off the pulse signal given from the DC / DC converter control unit 41 in accordance with the forced stop signal given from the safety control unit 42.
- the inverter 11 stops and the charging operation stops. That is, the mask 43 serves as a forced stop unit that forcibly stops the charging operation in response to the forced stop signal.
- the mask 43 is, for example, an AND circuit.
- a logical product circuit is provided for each of the switching elements 111 to 114.
- One of the two input terminals of the AND circuit is connected to the DC / DC converter control unit 41, and the other is connected to the safety control unit 42.
- An output terminal of the AND circuit is connected to the gate drive unit 44 and the safety control unit 42.
- the AND circuit outputs a pulse signal output from the DC / DC converter control unit 41 when the forced stop signal is not given from the safety control unit 42, while the L level signal is output when the forced stop signal is given. Output a signal.
- the gate drive unit 44 is a device that receives a signal from the mask 43 for each of the switching elements 111 to 114 and outputs a gate voltage for each of the switching elements 111 to 114 based on the signal.
- the gate drive unit 44 outputs, for example, a gate voltage that turns on the switching elements 111 to 114 when an H level signal is applied, and turns off the switching elements 111 to 114 when an L level signal is applied. Output voltage. In the example of FIG. 3, only the switching element 111 is displayed for convenience.
- the safety control unit 42 is a circuit that performs control to forcibly stop the operation of the charger 1 when an abnormality occurs in the charger 1.
- FIG. 4 is a block diagram illustrating a configuration of the safety control unit 42.
- the safety control unit 42 includes a safety main control unit 421 and a check unit 422.
- the safety main control unit 421 is a main circuit of the safety control unit 42.
- the safety main control unit 421 is based on detection results (data indicating current values) of the current detectors 15 and 126 and information from the external control unit 4 (for example, information indicating each state of the electric vehicle such as a body temperature). Then, it is determined whether or not an abnormality has occurred in the charger 1. Specifically, when the current detected by the current detectors 15 and 126 exceeds a predetermined threshold current (that is, when the current is an overcurrent), or the information indicating the vehicle body temperature from the external control unit 4 When the indicated value exceeds the threshold value, the safety main control unit 421 determines that an abnormality has occurred in the charger 1.
- a predetermined threshold current that is, when the current is an overcurrent
- the safety main control unit 421 determines that an abnormality has occurred in the charger 1.
- the safety main control unit 421 normally outputs an H level signal to the mask 43.
- the safety main control unit 421 outputs an L level signal (that is, a forced stop signal for forcibly stopping the charging operation) to the mask 43.
- the safety main control unit 421 receives the output signal of the check unit 422. In addition, the safety main control unit 421 sends information such as a control result to the external control unit 4.
- the check unit 422 is a circuit that checks whether the forced stop means (that is, the mask 43 in the present embodiment) operates normally and outputs information indicating the result.
- the check unit 422 is, for example, a D flip-flop.
- a D flip-flop is provided for each of the switching elements 111 to 114.
- the output signal of the AND circuit corresponding to the switching element 111 is input to the clock terminal of the D flip-flop corresponding to the switching element 111.
- the output signal of the AND circuit corresponding to each of the switching elements 112 to 114 is input to the clock terminal of each D flip-flop corresponding to the switching elements 112 to 114.
- the output signal of the safety main control unit 421 is input to the D terminal of each D flip-flop.
- the inversion output terminal (Q bar) of each D flip-flop is connected to the safety main control unit 421.
- the check unit 422 is an operation in which the mask 43 forcibly stops the charging operation in a state in which the safety main control unit 421 outputs a forced stop signal (that is, an operation that blocks a pulse signal supplied from the DC / DC converter control unit 41). ) Is output normally to the safety main control unit 421 (that is, an error signal indicating that the mask 43 is out of order). For example, when the output signal of the check unit 422 is at the H level, the safety main control unit 421 determines that the signal is an error signal.
- the safety main control unit 421 outputs a forcible stop signal when an abnormality occurs in the charger 1 and determines whether or not to acquire an error signal from the check unit 422. Even in a state where no abnormality has occurred in 1, a forced stop signal is output for a predetermined time (approximately several milliseconds), and it is determined whether or not to acquire an error signal from the check unit 422.
- a predetermined time approximately several milliseconds
- the external control unit 4 transmits information indicating the start of charging to the DC / DC converter control unit 41 and the safety main control unit 421.
- the DC / DC converter control unit 41 receives the information indicating the start of charging
- the DC / DC converter control unit 41 outputs each pulse signal for turning on / off the switching elements 111 to 114 to the mask 43.
- the safety main control unit 421 receives information indicating the start of charging
- the safety main control unit 421 outputs an H level signal to the mask 43 and the check unit 422.
- the mask 43 performs an AND operation on the pulse signal from the DC / DC converter control unit 41 and the H level signal from the safety main control unit 421, and is the same pulse signal as the pulse signal from the DC / DC converter control unit 41. Is output to the gate drive unit 44 and the check unit 422.
- the gate drive unit 44 generates and outputs gate voltages of the switching elements 111 to 114 based on the applied pulse signal.
- the switching elements 111 to 114 are turned on / off according to the gate voltage, whereby the inverter 11 operates. As a result, the battery 2 is charged.
- FIG. 5 is a time chart showing an operation example of the check unit 422.
- safety main control unit 421 acquires information indicating an abnormality of charger 1 (for example, a detection result indicating an overcurrent from current detectors 15 and 126) in a state where an H level signal is output.
- the safety main control unit 421 changes the output signal from the H level to the L level when the information indicating the abnormality of the charger 1 is acquired.
- the mask 43 performs an AND operation between the pulse signal from the DC / DC converter control unit 41 and the L level signal from the safety main control unit 421.
- the mask 43 Since the signal from the safety main control unit 421 is at the L level, the mask 43 sends the L level signal to the gate drive unit 44 and the check unit 422 regardless of the signal level of the pulse signal from the DC / DC converter control unit 41. Output.
- the gate drive unit 44 outputs a gate voltage for turning off the switching elements 111 to 114 in accordance with the L level input signal. Thereby, the inverter 11 stops. As a result, charging to the battery 2 is interrupted.
- the safety main control unit 421 when the safety main control unit 421 outputs a forced stop signal, the output signal of the mask 43 is held at the L level, so that no pulse signal is input to the clock terminal of the check unit 422. For this reason, the check unit 422 outputs an L level signal to the safety main control unit 421 even after the safety main control unit 421 outputs a forced stop signal.
- the safety main control unit 421 determines that the mask 43 is operating normally because the safety main control unit 421 does not acquire an H level error signal from the check unit 422 while the forced stop signal is being output.
- FIG. 6 is a time chart showing an operation example of the check unit 422 when the mask 43 is not operating normally.
- the mask 43 outputs a pulse signal without blocking the pulse signal output from the DC / DC converter control unit 421 even when the forced stop signal is acquired from the safety main control unit 421.
- the check unit 422 changes the output signal from the L level to the H level at the rising edge of the first pulse signal from the mask 43 after the signal from the safety main control unit 421 changes from the H level to the L level.
- the signal held in the changed state and held at the H level (error signal) is output to the safety main control unit 421. Since the safety main control unit 421 obtains an error signal from the check unit 422 in a state where the forced stop signal is being output, the safety main control unit 421 determines that the mask 43 is not operating normally. Then, the safety main control unit 421 transmits information indicating that the mask 43 is not operating normally to the external control unit 4. The external control unit 4 gives a warning (for example, display or sound indicating an error) indicating that the mask 43 is not operating normally to the user. In accordance with the warning, the user removes the charger 1 from the AC power source 3 and repairs or replaces the mask 43.
- a warning for example, display or sound indicating an error
- the safety main control unit 421 changes the output from the H level to the L level after a predetermined time has elapsed from the start of charging (for example, several minutes after the start of charging) in a state where the charger 1 is performing a normal charging operation. Change and hold for a predetermined time (for example, about several milliseconds).
- a predetermined time for example, about several milliseconds.
- the check unit 422 outputs an L-level signal when an L-level signal is applied to the clock terminal in a state in which a forced stop signal is applied from the safety main control unit 421.
- the check unit 422 outputs an H level signal when the pulse signal rises.
- the safety main control unit 421 determines that the mask 43 operates normally when the H level signal is not acquired from the check unit 422 in the state where the forced stop signal is output, and the H level from the check unit 422 is determined.
- the safety main control unit 421 transmits information indicating the determination result to the external control unit 4.
- the safety main control unit 421 changes the output from the L level to the H level after a lapse of a predetermined time (for example, several milliseconds) after starting the output of the L level signal.
- the inverter 11 temporarily It stops and charging is temporarily interrupted.
- the charger 1 of the present embodiment it is notified to the user whether or not the battery has been normally stopped forcibly when an abnormality of the charging operation occurs.
- the user can recognize that the forced stop has not been normally performed, and can remove the charger 1 from the AC power source and repair or replace the forced stop means (specifically, the mask 43). For this reason, according to the charger 1 according to the present embodiment, the charging can be reliably forcibly stopped when an abnormality in the charging operation is detected.
- the charger 1 according to the present embodiment determines whether or not the forced stop of the charger 1 is normally performed when an abnormality of the charging operation occurs in a state where the charger 1 is normally performing the charging operation. Can be confirmed.
- the user can quickly know that the forced stop of the charger 1 is not normally performed (that is, that the mask 43 is broken) before the abnormality in the charging operation occurs. Thereby, the user can repair or replace the forced stop means in advance. Therefore, according to the charger 1 according to the present embodiment, it is possible to avoid the continuation of charging in a state where it cannot be forcibly stopped when an abnormality in the charging operation is detected. As a result, an electric shock accident such as a user can be avoided.
- FIG. 7 is a block diagram showing a configuration of a charger control unit 40A of the charger 1A according to the second embodiment of the present invention.
- the charger control unit 40A according to the present embodiment is in accordance with the first embodiment in that the output signal of the safety control unit 42 is output not only to the mask 43 but also to the DC / DC converter control unit 41. Different from the charger control unit 40.
- the DC / DC converter control unit 41 can grasp that the safety main control unit 421 outputs a forced stop signal (that is, the DC / DC converter 10 stops). For this reason, the DC / DC converter control unit 41 can grasp in advance that information fed back to the DC / DC converter control unit 41 (for example, detection results of the current detectors 15 and 126, etc.) changes. .
- the DC / DC converter receives the forced stop signal from the safety control unit 421
- the DC / DC converter adjusts the control of the charging operation according to the forced stop signal. Therefore, the DC / DC converter control unit 41 can perform stable control in consideration of changes in the fed back information.
- the charger 1A according to the present embodiment is the same as the charger 1 according to the first embodiment except that the output signal of the safety control unit 42 is also output to the DC / DC converter control unit 421. The effect similar to the charger 1 by 1 embodiment is acquired.
- FIG. 8 is a block diagram showing a configuration of the charger control unit 40B of the charger 1B according to the third embodiment of the present invention.
- the charger control unit 40B according to the present embodiment is a charger according to the first embodiment in that a safety control unit 42B is provided instead of the safety control unit 42, and a mask 43B is provided instead of the mask 43.
- FIG. 9 is a block diagram showing a configuration of the safety control unit 42B.
- the safety control unit 42B is different from the safety control unit 42 according to the first embodiment in that a safety main control unit 421B is provided instead of the safety main control unit 421, and a check unit 422B is provided instead of the check unit 422.
- the mask 43B includes an AND circuit 43B1, an AND circuit 43B2, and an OR circuit 43B3.
- the check unit 422B includes D flip-flops 422B1 and 422B2.
- the AND circuit 43B1 performs an AND operation on the output signal of the DC / DC converter control unit 41 (pulse signal for each of the switching elements 111 to 114) and the output signal STOP1 of the safety main control unit 421B, and ORs the operation results.
- This circuit outputs to the circuit 43B3 and the D flip-flop 422B1.
- the AND circuit 43B2 performs an AND operation on the output signal of the DC / DC converter control unit 41 (pulse signal for each of the switching elements 111 to 114) and the output signal STOP2 of the safety main control unit 421B, and ORs the operation results.
- This circuit outputs to the circuit 43B3 and the D flip-flop 422B2.
- the OR circuit 43B3 is a circuit that performs an OR operation on the output signal of the AND circuit 43B1 and the output signal of the AND circuit 43B2, and outputs the operation result to the gate drive unit 44.
- the AND circuits 43B1 and 43B2 and the OR circuit 43B3 are provided for each of the switching elements 111 to 114.
- the D flip-flop 422B1 is a circuit for confirming whether the logical product circuit 43B1 operates normally
- the D flip-flop 422B2 is a circuit for confirming whether the logical product circuit 43B2 operates normally.
- the output signal STOP1 of the safety main control unit 421B is given to the D terminal of the D flip-flop 422B1, and the output signal of the AND circuit 43B1 is given to the clock terminal of the D flip-flop 422B1.
- the output signal STOP2 of the safety main control unit 421B is given to the D terminal of the D flip-flop 422B2, and the output signal of the AND circuit 43B2 is given to the clock terminal of the D flip-flop 422B2.
- Each of the D flip-flops 422B1 and 422B2 outputs the calculation result from the inverted output terminal to the safety main control unit 421B.
- D flip-flops 422B1 and 422B2 are also provided for each switching element 111-114.
- FIG. 10 is a time chart showing an operation example of the mask 43B and the check unit 422B when the charger 1B is forcibly stopped.
- the safety main control unit 421B outputs an H level output signal STOP1 and an H level output signal STOP2. Since both the output signal STOP1 and the output signal STOP2 are at the H level, the AND circuits 43B1 and 43B2 output the same pulse signal as the pulse signal output by the DC / DC converter control unit 41. Since the same pulse signal is input, the OR circuit 43B3 outputs the same pulse signal as the input pulse signal.
- the gate drive unit 44 outputs a gate voltage according to the pulse signal output from the DC / DC converter control unit 41.
- the D flip-flop 422B1 outputs the signal held at the L level from the inverted output terminal to the safety main control unit 421B because the output signal STOP1 is at the H level at the rising edge of the pulse output from the AND circuit 43B1.
- the D flip-flop 422B2 outputs the signal held at the L level from the inverted output terminal to the safety main control unit 421B because the output signal STOP2 is at the H level at the rising edge of the pulse output from the AND circuit 43B2.
- both the output signal STOP1 and the output signal STOP2 are simultaneously changed from the H level to the L level.
- the AND circuit 43B1 outputs an L level signal.
- the AND circuit 43B2 outputs an L level signal.
- the OR circuit 43B3 outputs an L level signal when both input signals are at the L level. Therefore, in this case, the gate drive unit 44 outputs a gate voltage according to the L level signal. As a result, the charger 1 stops.
- the safety main control unit 421B When the safety main control unit 421B outputs the L level output signal STOP1 (forced stop signal for the AND circuit 431B), the output signal of the AND circuit 43B1 becomes L level, so that a pulse is applied to the clock terminal of the D flip-flop 422B1. No signal is input. For this reason, the D flip-flop 422B1 outputs an L-level signal to the safety main control unit 421B even after the safety main control unit 421B outputs a forced stop signal for the AND circuit 43B1. Similarly, the D flip-flop 422B2 outputs an L level signal to the safety main control unit 421B even after the safety main control unit 421B outputs a forced stop signal (L level output signal STOP2) to the AND circuit 43B2.
- L level output signal STOP1 forced stop signal for the AND circuit 431B
- the safety main control unit 421B does not acquire an H level error signal from the D flip-flops 422B1 and 422B2 in a state where the forced stop signal for the AND circuit 43B1 and the forced stop signal for the AND circuit 43B2 are output. (To be more precise, the logical product circuits 43B1 and 43B2) are determined to be operating normally.
- FIG. 11 is a time chart showing an operation example of the mask 43B and the check unit 422B when checking the operation of the mask 43B.
- the safety main control unit 421B sets the output signal STOP1 to H after a predetermined time has elapsed from the start of charging (for example, several minutes after the start of charging) in a state where information indicating an abnormality of the charger 1 has not been acquired.
- the level is changed from L level to L level and held for a predetermined time (for example, about several milliseconds).
- the AND circuit 43B1 While the output signal STOP1 is held at the L level, the AND circuit 43B1 outputs an L level signal.
- the D flip-flop 422B1 outputs an L level signal because no pulse signal is input to the clock terminal while the output signal STOP1 is at the L level.
- the safety main control unit 421B does not acquire an H level error signal from the D flip-flop 422B1 in a state where the forcible stop signal is output to the AND circuit 43B1, and therefore determines that the AND circuit 43B1 operates normally.
- the safety main control unit 421B changes the output signal STOP1 from the L level to the H level and holds it after a predetermined time has passed (several milliseconds).
- the safety main controller 421B changes the output signal STOP1 from the L level to the H level, and simultaneously changes the output signal STOP2 from the H level to the L level and holds it for a predetermined time (about several milliseconds).
- the AND circuit 43B2 outputs an L level signal.
- the D flip-flop 422B2 outputs an L level signal because no pulse signal is input to the clock terminal while the output signal STOP2 is at the L level.
- the safety main control unit 421B determines that the AND circuit 43B2 operates normally because it does not acquire an H level error signal from the D flip-flop 422B2 in a state where the forcible stop signal is output to the AND circuit 43B2. Further, the safety main control unit 421B changes the output signal STOP2 from the L level to the H level after a predetermined time has passed since the output signal STOP2 was changed to the L level (several milliseconds).
- the OR circuit 43B3 receives a pulse signal from the AND circuit 43B2 when the output signal STOP1 is at the L level, and receives a pulse signal from the AND circuit 43B1 when the output signal STOP2 is at the L level. Accordingly, the OR circuit 43B3 outputs the same pulse signal as the pulse signal output from the DC / DC converter control unit 41 to the gate drive unit 44 even during the operation confirmation of the mask 43B.
- FIG. 12 is a time chart showing an operation example of the mask 43B and the check unit 422B when the logical product circuit 43B1 is not operating normally as a result of checking the operation of the mask 43B. It is assumed that the AND circuit 43B1 outputs a pulse signal without interrupting the pulse signal output from the DC / DC converter control unit 41 even if the forcible stop signal for the AND circuit 43B1 is acquired from the safety main control unit 421. . In the example of FIG. 12, the D flip-flop 422B1 changes the output signal from the L level to the H level at the time of the rising of the first pulse signal from the AND circuit 43B1 after the output signal STOP1 changes from the H level to the L level.
- the H level signal (error signal) is output to the safety main controller 421B.
- the D flip-flop 422B1 changes the output signal from the H level to the L level at the rising edge of the first pulse signal from the AND circuit 43B1 after the output signal STOP1 changes from the L level to the H level.
- the L level signal is output to the safety main control unit 421B.
- the safety main control unit 421B obtains an H-level error signal from the D flip-flop 422B1 in a state where the forcible stop signal is output to the AND circuit 43B1, and therefore determines that the AND circuit 43B1 does not operate normally.
- the logical product circuit 43B2 and the logical sum circuit 43B3 are the same as described in FIG.
- the mask 43B (more precisely, the AND circuits 43B1 and 43B2) is normal without temporarily stopping the inverter 11 (that is, temporarily stopping charging). It is possible to confirm whether or not to operate.
- the charger 1B according to the present embodiment except that it is confirmed whether or not the mask 43B operates normally without temporarily stopping the inverter 11 (that is, temporarily stopping charging), Since it is the same as that of the charger 1 by 1st Embodiment, the effect similar to 1st Embodiment is acquired.
- the safety main control units 421 and 421B confirm the operation of the masks 43 and 43B after a predetermined time has elapsed from the start of charging (for example, after several minutes).
- the timing for confirming the operation of the masks 43 and 43B is not limited to this.
- the safety main control units 421 and 421B may check the operation of the masks 43 and 43B at the start of charging. By checking the operation of the masks 43 and 43B at the start of charging, it is possible to avoid starting charging while the masks 43 and 43B are out of order. Further, the safety main control units 421 and 421B may perform the operation confirmation of the masks 43 and 43B a plurality of times during charging.
- the safety main control units 421 and 421B check the operation of the masks 43 and 43B at predetermined time intervals from the start of charging. More specifically, it is preferable to check the operation of the masks 43 and 43B at a rate of once in one hour in consideration of MTBF (Mean Time Between Failure). By performing the operation confirmation of the masks 43 and 43B a plurality of times, the failure of the masks 43 and 43B can be found earlier. Further, the safety main control units 421 and 421B may change the timing of checking the operation of the masks 43 and 43B with time.
- MTBF Green Time Between Failure
- the safety main control units 421 and 421B check the operation of the masks 43 and 43B at a rate of once for a plurality of times of charging while the years have not passed since the chargers 1 to 1B were manufactured. I do.
- the safety main control units 421 and 421B check the operation of the masks 43 and 43B for each charge.
- the safety main control units 421 and 421B check the operation of the masks 43 and 43B every time they are charged, and the masks 43 and 43B every hour during charging. The operation confirmation of 43B is performed.
- the probability of failure of the masks 43 and 43B increases with the passage of time since the manufacture of the chargers 1 to 1B. Accordingly, the operation of the masks 43 and 43B according to the probability of failure of the masks 43 and 43B is changed by changing the timing of operation confirmation of the masks 43 and 43B according to the passage of time since the manufacture of the chargers 1 to 1B. Confirmation can be made.
- the operation check of the masks 43 and 43B according to the passage of time since the manufacture of the chargers 1 to 1B is performed by checking the calendar function installed in the chargers 1 to 1B or information from the external control unit 4. It may be realized based on (for example, vehicle inspection information). Further, the safety main control units 421 and 421B may check the operation of the masks 43 and 43B at a timing according to a user operation.
- the chargers 1 to 1B are forcibly stopped by the masks 43 and 43B (more specifically, the logical operation circuit).
- the means for forcibly stopping the charger is not limited to this, and any means for forcibly stopping the charging operation according to the forcible stop signal may be used.
- the chargers 1 to 1B in the above embodiments are mounted on an electric vehicle.
- the chargers 1 to 1B may be installed on the ground.
- the battery 2 is mounted on an electric vehicle, the AC power source 3 and the chargers 1 to 1B are provided on the ground, and the battery 2 is charged by connecting the output terminals of the chargers 1 to 1B to the battery 2. That's it. Also in this aspect, the same effects as those in the above embodiments can be obtained.
- Safety main control unit 422, 422B ... Check unit, 422B1, 422B2 ... D flip-flop, 111, 112 , 113, 114 ... switching elements, 116, 117, 118, 119 ... freewheeling diodes, 121, 1 2,123,124 ... diode.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Protection Of Static Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
<第1実施形態>
図1は、この発明の第1実施形態による充電器1の構成を示す図である。充電器1は、バッテリ2を充電する装置である。バッテリ2は、例えば、電気自動車に搭載される車載バッテリである。充電器1は、例えば、バッテリ2とともに電気自動車に搭載される。交流電源3は、例えば、各家庭に配電される100Vの商用の交流電源である。充電器1は、DC/DC(直流/直流)コンバータ10、AC/DC(交流/直流)コンバータ20、電解コンデンサ30および充電器制御部40を含んでいる。
以上が、充電器1の構成である。
まず、ユーザが充電器1を交流電源3に接続すると、外部制御部4は、充電開始を示す情報をDC/DCコンバータ制御部41および安全主制御部421に送信する。DC/DCコンバータ制御部41は、充電開始を示す情報を受け取ると、スイッチング素子111~114をオン/オフさせるための各パルス信号をマスク43に出力する。安全主制御部421は、充電開始を示す情報を受け取ると、Hレベルの信号をマスク43およびチェック部422に出力する。マスク43は、DC/DCコンバータ制御部41からのパルス信号と安全主制御部421からのHレベルの信号との論理積演算を行い、DC/DCコンバータ制御部41からのパルス信号と同じパルス信号をゲートドライブユニット44とチェック部422に出力する。ゲートドライブユニット44は、与えられたパルス信号に基づいてスイッチング素子111~114のゲート電圧を生成して出力する。このゲート電圧に従ってスイッチング素子111~114がオン/オフすることにより、インバータ11が動作する。その結果、バッテリ2が充電される。
図7は、この発明の第2実施形態による充電器1Aの充電器制御部40Aの構成を示すブロック図である。図7に示すように、本実施形態による充電器制御部40Aは、安全制御部42の出力信号がマスク43だけでなくDC/DCコンバータ制御部41にも出力される点において第1実施形態による充電器制御部40と異なる。
図8は、この発明の第3実施形態による充電器1Bの充電器制御部40Bの構成を示すブロック図である。図8に示すように、本実施形態による充電器制御部40Bは、安全制御部42に代えて安全制御部42Bを、マスク43に代えてマスク43Bを設けた点において第1実施形態による充電器制御部40と異なる。また、図9は、安全制御部42Bの構成を示すブロック図である。安全制御部42Bは、安全主制御部421に代えて安全主制御部421Bを、チェック部422に代えてチェック部422Bを設けた点において第1実施形態による安全制御部42と異なる。
以上、この発明の第1から第3実施形態について説明したが、この発明には他にも実施形態が考えられる。例えば次の通りである。
Claims (6)
- 交流電力を直流電力に変換して車載バッテリに供給する電力変換部と、
強制停止信号を取得したとき前記電力変換部を強制的に停止させる強制停止手段と、
前記強制停止手段が正常に動作するか否かを確認し、その結果を示す情報を出力する動作確認手段と、
を具備することを特徴とする充電器。 - 前記強制停止信号を出力する強制停止信号出力手段をさらに有し、
前記強制停止信号出力手段は、前記電力変換部の異常を検知していない状態において、前記強制停止信号を所定時間出力することを特徴とする請求項1に記載の充電器。 - 前記強制停止信号出力手段は、前記強制停止信号を所定時間出力することを定期的に行うことを特徴とする請求項2に記載の充電器。
- 前記強制停止手段は、前記強制停止信号を取得していないときに前記電力変換部を制御するためのパルス信号を出力する一方、前記強制停止信号を取得すると前記パルス信号の出力を停止し、
前記動作確認手段は、前記強制停止信号出力手段の出力信号と前記強制停止手段の出力信号とを用いた演算を行い、前記強制停止信号が出力されている状態において前記強制停止手段がパルス信号の出力を継続している場合、前記強制停止手段が正常に動作しない旨を示す信号を出力することを特徴とする請求項2に記載の充電器。 - 前記電力変換部を制御するためのパルス信号を生成して前記強制停止手段に与える電力変換部制御手段をさらに具備し、
前記強制停止信号出力手段は、前記強制停止信号を前記強制停止手段と前記電力変換部制御手段とに出力し、
前記電力変換部制御手段は、前記強制停止信号出力手段から受け取る前記強制停止信号に応じて前記電力変換部の制御を調整することを特徴とする請求項2に記載の充電器。 - 前記強制停止信号出力手段は、前記電力変換部の異常を検知していない状態において、第1の強制停止信号を所定時間出力し、前記第1の強制停止信号の出力の終了に伴って、第2の強制停止信号を所定時間出力し、
前記強制停止手段は、
前記電力変換部を制御するためのパルス信号と前記第1の強制停止信号の論理積演算を行い、その演算結果を示す信号を出力する第1の論理積回路と、
前記電力変換部を制御するためのパルス信号と前記第2の強制停止信号の論理積演算を行い、その演算結果を示す信号を出力する第2の論理積回路と、
前記第1の論理積回路と前記第2の論理積回路の各々から出力される信号の論理和演算を行い、その演算結果を示す信号を前記電力変換部を動作させる駆動回路に出力する論理和回路と、を有し、
前記動作確認手段は、
前記第1の強制停止信号と前記第1の論理積回路の出力信号とを用いた演算を行い、前記第1の強制停止信号が出力されている状態において前記第1の論理積回路からの前記電力変換部を制御するためのパルス信号の出力が継続している場合、前記第1の論理積回路が正常に動作しない旨を示す信号を出力する第1の動作確認回路と、
前記第2の強制停止信号と前記第2の論理積回路の出力信号とを用いた演算を行い、前記第2の強制停止信号が出力されている状態において前記第2の論理積回路からの前記電力変換部を制御するためのパルス信号の出力が継続している場合、前記第2の論理積回路が正常に動作しない旨を示す信号を出力する第2の動作確認回路と、
を有することを特徴とする請求項2に記載の充電器。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016523089A JPWO2015181991A1 (ja) | 2014-05-30 | 2014-05-30 | 充電器 |
| EP14893248.6A EP3151364A4 (en) | 2014-05-30 | 2014-05-30 | Charger |
| PCT/JP2014/064546 WO2015181991A1 (ja) | 2014-05-30 | 2014-05-30 | 充電器 |
| US15/179,399 US20160285290A1 (en) | 2014-05-30 | 2016-06-10 | Charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2014/064546 WO2015181991A1 (ja) | 2014-05-30 | 2014-05-30 | 充電器 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15/179,399 Continuation US20160285290A1 (en) | 2014-05-30 | 2016-06-10 | Charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015181991A1 true WO2015181991A1 (ja) | 2015-12-03 |
Family
ID=54698361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2014/064546 Ceased WO2015181991A1 (ja) | 2014-05-30 | 2014-05-30 | 充電器 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160285290A1 (ja) |
| EP (1) | EP3151364A4 (ja) |
| JP (1) | JPWO2015181991A1 (ja) |
| WO (1) | WO2015181991A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019122210A (ja) * | 2018-01-11 | 2019-07-22 | トヨタ自動車株式会社 | 車載充電器の制御装置 |
| JP7341370B1 (ja) * | 2022-10-11 | 2023-09-08 | 三菱電機株式会社 | 電力変換器 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6805798B2 (ja) * | 2016-12-19 | 2020-12-23 | セイコーエプソン株式会社 | 過電流検出回路、半導体装置、及び、電源装置 |
| DE102017202406B3 (de) * | 2017-02-15 | 2018-06-14 | Knick Elektronische Messgeräte GmbH & Co. KG | Signalübertragungseinrichtung für Pulsdichte-modulierte Signale |
| CN114629192A (zh) * | 2020-12-10 | 2022-06-14 | 艾普凌科株式会社 | 屏蔽控制电路、控制器、充放电控制电路及电池装置 |
| KR20240114121A (ko) * | 2023-01-16 | 2024-07-23 | 삼성에스디아이 주식회사 | 차량용 컨버터 시스템 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007116530A1 (ja) * | 2006-04-11 | 2007-10-18 | Mitsubishi Denki Kabushiki Kaisha | 電力貯蔵システム |
| JP2011182535A (ja) * | 2010-02-26 | 2011-09-15 | Fuji Electric Co Ltd | 電力変換器 |
| JP2013090496A (ja) * | 2011-10-20 | 2013-05-13 | Toyota Motor Corp | 電気自動車用充電装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3582523B2 (ja) * | 2002-09-17 | 2004-10-27 | トヨタ自動車株式会社 | 電気負荷装置、異常処理方法、および電気負荷の異常処理をコンピュータに実行させるためのプログラムを記録したコンピュータ読取り可能な記録媒体 |
| JP5778536B2 (ja) * | 2011-09-14 | 2015-09-16 | 株式会社ケーヒン | 電子制御装置及び車両制御システム |
| JP5662390B2 (ja) * | 2012-07-30 | 2015-01-28 | 三菱電機株式会社 | 充放電装置 |
-
2014
- 2014-05-30 JP JP2016523089A patent/JPWO2015181991A1/ja active Pending
- 2014-05-30 WO PCT/JP2014/064546 patent/WO2015181991A1/ja not_active Ceased
- 2014-05-30 EP EP14893248.6A patent/EP3151364A4/en not_active Withdrawn
-
2016
- 2016-06-10 US US15/179,399 patent/US20160285290A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007116530A1 (ja) * | 2006-04-11 | 2007-10-18 | Mitsubishi Denki Kabushiki Kaisha | 電力貯蔵システム |
| JP2011182535A (ja) * | 2010-02-26 | 2011-09-15 | Fuji Electric Co Ltd | 電力変換器 |
| JP2013090496A (ja) * | 2011-10-20 | 2013-05-13 | Toyota Motor Corp | 電気自動車用充電装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3151364A4 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019122210A (ja) * | 2018-01-11 | 2019-07-22 | トヨタ自動車株式会社 | 車載充電器の制御装置 |
| JP7341370B1 (ja) * | 2022-10-11 | 2023-09-08 | 三菱電機株式会社 | 電力変換器 |
| WO2024079775A1 (ja) * | 2022-10-11 | 2024-04-18 | 三菱電機株式会社 | 電力変換器 |
| CN119487738A (zh) * | 2022-10-11 | 2025-02-18 | 三菱电机株式会社 | 电力变换器 |
| US12278481B1 (en) | 2022-10-11 | 2025-04-15 | Mitsubishi Electric Corporation | Power converter |
| CN119487738B (zh) * | 2022-10-11 | 2025-08-19 | 三菱电机株式会社 | 电力变换器 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3151364A1 (en) | 2017-04-05 |
| JPWO2015181991A1 (ja) | 2017-04-20 |
| EP3151364A4 (en) | 2018-01-24 |
| US20160285290A1 (en) | 2016-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107431432B (zh) | Dc-dc转换器 | |
| WO2015181991A1 (ja) | 充電器 | |
| CN103718449B (zh) | 电力转换装置 | |
| JP6414211B2 (ja) | 充電器 | |
| JP5987850B2 (ja) | 電力変換装置 | |
| US10601301B2 (en) | Abnormality detection device and vehicle-mounted power supply device | |
| US10938226B2 (en) | Power control device | |
| US9425612B2 (en) | Output power protection apparatus and method of operating the same | |
| WO2013190733A1 (ja) | リーク検出装置 | |
| JP6414533B2 (ja) | 多相コンバータ | |
| JP6365226B2 (ja) | 電動車両 | |
| US20150084580A1 (en) | Power-supply device | |
| CN105048806B (zh) | 电力转换电路 | |
| JP6497565B2 (ja) | Dcdcコンバータ | |
| WO2017179200A1 (ja) | 車載用充電器 | |
| JP2004336908A (ja) | スイッチング電源 | |
| JP6459868B2 (ja) | 充電装置 | |
| JP2015149815A (ja) | 電力変換装置 | |
| EP3651309B1 (en) | Power supply for vehicle and control method of power supply | |
| JP2020162222A (ja) | バックアップ電源制御装置及びバックアップ電源装置 | |
| CA2996871A1 (en) | Power converting device and method of controlling power converting device | |
| JP2015027125A (ja) | 車載充電装置 | |
| JP2010193619A (ja) | 共振型昇降圧コンバータの駆動制御装置 | |
| JP2010068633A (ja) | 電源装置システム |
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: 14893248 Country of ref document: EP Kind code of ref document: A1 |
|
| REEP | Request for entry into the european phase |
Ref document number: 2014893248 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2014893248 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2016523089 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |