WO2023188192A1 - 車載制御装置 - Google Patents
車載制御装置 Download PDFInfo
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- WO2023188192A1 WO2023188192A1 PCT/JP2022/016276 JP2022016276W WO2023188192A1 WO 2023188192 A1 WO2023188192 A1 WO 2023188192A1 JP 2022016276 W JP2022016276 W JP 2022016276W WO 2023188192 A1 WO2023188192 A1 WO 2023188192A1
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- WIPO (PCT)
- Prior art keywords
- contactor
- control
- vehicle
- target
- vibration control
- Prior art date
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- 229910000652 nickel hydride Inorganic materials 0.000 description 1
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Classifications
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- 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
- B60L3/04—Cutting off the power supply under fault conditions
Definitions
- This case relates to an on-vehicle control device that controls a contactor that connects and disconnects a high voltage circuit of a battery mounted on a vehicle.
- electric vehicles such as electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs) that can be externally charged or supplied with power have built-in batteries.
- the high voltage circuit of a battery is provided with an electromagnetic contactor called a contactor for breaking the connection between the battery and a load device (for example, an inverter) in an emergency.
- the on-off state of the contactor is controlled by an on-vehicle control device.
- Patent Document 1 discloses a power supply system that determines a welding failure of each of a plurality of contactors based on the presence or absence of a voltage change in a smoothing capacitor provided in a load device when the system is stopped.
- the in-vehicle control device of the present invention was devised in view of such problems, and one of its purposes is to eliminate the temporary short-circuit condition of the contactor.
- other purposes of the present invention are not limited to this purpose, but also to achieve functions and effects that are derived from each configuration shown in the detailed description of the invention and that cannot be obtained by conventional techniques. be.
- the disclosed in-vehicle control device can be realized as the aspects or application examples disclosed below, and solves at least part of the above problems.
- the in-vehicle control device disclosed herein includes a determination unit that determines whether or not there is a possibility of welding of a target contactor that connects or disconnects a high voltage circuit of a battery mounted on a vehicle after the high voltage circuit is used; a vibration control unit that performs vibration control including target vibration control that repeatedly turns on and off the target contactor when it is determined by the unit that there is a possibility of welding of the target contactor.
- the high voltage circuit includes a first contactor interposed on one of the positive electrode side and the negative electrode side, a second contactor interposed on the other of the positive electrode side and the negative electrode side, and the first contactor
- a precharge contactor is provided, which is connected in parallel with the resistor and connected in series with the resistor.
- the target contactor is the first contactor
- the vibration control includes non-target vibration control in which the precharge contactor is repeatedly turned on and off before implementing the target vibration control.
- the vehicle is provided with a capacitor connected to the battery via each of the first contactor and the second contactor.
- the in-vehicle control device may turn on the precharge contactor before the vibration control unit performs the vibration control when the determination unit determines that there is a possibility of welding of the target contactor.
- the battery pack further includes a voltage equalization control section that equalizes the voltage of the capacitor and the battery.
- the vibration control unit maintains the target contactor in an ON state while implementing the non-target vibration control, and maintains the precharge contactor in an ON state while implementing the target vibration control.
- the determination unit re-determines whether there is a possibility of welding of the target contactor after the vibration control unit performs the vibration control.
- the vibration control unit performs the vibration control multiple times.
- the vehicle-mounted control device further includes a travel control unit that enables the vehicle to travel when receiving a start signal requesting the vehicle to start traveling.
- the vibration control section interrupts the vibration control when the start signal is received, and the travel control section makes the vehicle ready to travel after the vibration control is interrupted, and responds to the user's operation.
- the vehicle is controlled by the vehicle.
- the vehicle-mounted control device further includes an off control section that performs off control to prohibit energization of the target contactor for a certain period of time.
- the off control unit performs the off control when the determination unit once again determines that there is a possibility of welding of the target contactor.
- the vehicle-mounted control device further includes a travel control unit that enables the vehicle to travel when receiving a start signal requesting the vehicle to start traveling.
- the off control section interrupts the off control when the start signal is received, and the travel control section puts the vehicle into a running state after the interruption of the off control, and responds to the user's operation.
- the vehicle is controlled by the vehicle.
- FIG. 1 is a schematic diagram of a vehicle to which an in-vehicle control device according to an embodiment is applied.
- 2 is a circuit diagram showing electrical connections between a battery mounted on the vehicle of FIG. 1 and other devices, and a block configuration diagram of the vehicle-mounted control device of FIG. 1.
- FIG. FIG. 2 is a flowchart for explaining processing after the high voltage circuit is used, which is performed by the in-vehicle control device of FIG. 1.
- FIG. 4 is a flowchart for explaining off control performed in FIG. 3.
- FIG. 2 is an example of a time chart illustrating the operation of the on-vehicle control device of FIG. 1.
- FIG. 1 is a schematic diagram of a vehicle 1 to which an in-vehicle control device 10 (hereinafter also referred to as "ECU 10") according to the present embodiment is applied, and FIG. 2 shows a battery 2 and other devices mounted on the vehicle 1.
- ECU 10 in-vehicle control device 10
- FIG. 2 shows a battery 2 and other devices mounted on the vehicle 1.
- 1 is a diagram showing both a circuit diagram showing electrical connections between and a block configuration diagram of an on-vehicle control device 10.
- FIG. 10 in-vehicle control device 10
- a vehicle 1 is an electric vehicle (an electric vehicle, a plug-in hybrid vehicle, etc.) equipped with a drive motor 3 that uses a battery 2 as a power source.
- the vehicle 1 is provided with contactors 21 to 23 for interrupting a high voltage circuit (DC circuit) between the battery 2 and other devices in an emergency.
- the ECU 10 has a function of controlling the on/off states of the contactors 21 to 23 and determining whether or not there is a possibility of welding to at least one of the contactors 21 to 23 after the high voltage circuit of the battery 2 is used.
- “after use of the high voltage circuit” means, for example, after the vehicle 1 is running, after the battery 2 is charged from an external charger, or after external power supply, the vehicle 1 includes charging and discharging the battery 2. This means after a series of processing (one activation cycle) is completed.
- the battery 2 is a secondary battery such as a lithium ion secondary battery or a nickel hydride battery, and is placed under the floor of the vehicle 1, for example.
- the battery pack 20 including the battery 2 is provided with the above-mentioned contactors 21 to 23.
- three contactors are used: a first contactor 21 and a second contactor 22, which are arranged on the positive and negative sides of the high voltage circuit of the battery 2, respectively, and a precharge contactor 23, which reduces rush current to the high voltage circuit.
- Two contactors are provided.
- the three contactors 21 to 23 are all constantly excited type contactors having a movable contact, a fixed contact, and an electromagnetic coil.
- the contactors 21 to 23 are controlled to be turned on (connected state, closed state) by energizing the electromagnetic coils in response to a control signal transmitted from the ECU 10.
- the electromagnetic coil is demagnetized and is controlled to be in an off state (disconnected state, open state).
- the first contactor 21 is connected to the electric wire Lp on the positive side of the high voltage circuit (hereinafter referred to as "positive side electric wire Lp"), and the second contactor 22 is connected to the electric wire Ln on the negative side of the high voltage circuit (hereinafter referred to as “negative electrode side electric wire Lp"). (referred to as “side wire Ln”).
- Precharge contactor 23 is connected in parallel to first contactor 21 and in series with precharge resistor 24 (resistor). The precharge contactor 23 is connected slightly before the first contactor 21 when the high voltage circuit starts to be used, so that the precharge resistor 24 suppresses excessive current from flowing into the high voltage circuit. It is.
- the precharge contactor 23 is disconnected after a predetermined startup time Tsu has elapsed since the start of use of the high voltage circuit.
- "when the use of the high-voltage circuit starts” means, for example, when the vehicle 1 starts running, when external charging starts, when external power supply starts, etc., a series of processing of the vehicle 1 including charging and discharging the battery 2 ( means the start of one activation cycle).
- the startup time Tsu is the time required to charge a capacitor 42, which will be described later, provided in the high voltage circuit, and is set to, for example, one to several seconds.
- the drive motor 3 is an AC motor generator that has both the function of rotationally driving wheels (for example, front wheels) using the electric power of the battery 2 and the function of regenerating electric power by generating power using the inertial torque of the wheels.
- the drive motor 3 of this embodiment is arrange
- the vehicle 1 may be a so-called four-wheel drive vehicle that includes two drive motors 3 that drive each of the front wheels and the rear wheels.
- an inverter 4 is interposed on the circuit connecting the drive motor 3 and the battery 2.
- the above-mentioned contactors 21 to 23 are interposed between the battery 2 and the inverter 4.
- the inverter 4 includes, for example, an inverter circuit 41, a smoothing capacitor 42 (hereinafter simply referred to as "capacitor 42"), a discharge resistor 43, a discharge switch 44, a voltmeter 45, and an MCU (Motor Control Unit) 46. It consists of:
- the inverter circuit 41 is connected to the positive electric wire Lp and the negative electric wire Ln of the high voltage circuit, respectively.
- the inverter circuit 41 is a three-phase bridge circuit including a plurality of switching elements [for example, IGBT (Insulated Gate Bipolar Transistor)], and drives the drive motor 3 by intermittently switching the connection state of each switching element. AC power is generated for
- the capacitor 42 smoothes noise generated by switching in the inverter circuit 41, and is connected in parallel with the inverter circuit 41 to the positive electric wire Lp and the negative electric wire Ln, respectively.
- the discharge resistor 43 discharges the charge stored in the capacitor 42 after the high voltage circuit is used, and is connected in parallel with the capacitor 42.
- the discharge switch 44 connects the discharge resistor 43 to the high voltage circuit after the high voltage circuit is used, and is connected in series with the discharge resistor 43.
- the voltmeter 45 measures the voltage V of the capacitor 42 (hereinafter also referred to as "capacitor voltage V"), and is connected in parallel with the capacitor 42.
- the MCU 46 controls the inverter circuit 41 based on an output request to the drive motor 3 output from the ECU 10, and also controls the on/off state of the discharge switch 44 based on a signal output from the ECU 10. Furthermore, the MCU 46 transmits the capacitor voltage V measured by the voltmeter 45 to the ECU 10.
- the vehicle 1 of this embodiment further includes an external charging port 5 for electrically connecting an external device of the vehicle 1 and the battery 2, and an auxiliary device that serves as a power source for on-vehicle electrical components including contactors 21 to 23.
- a battery 6 is provided. That is, the vehicle 1 of this embodiment is a plug-in hybrid vehicle (PHEV) capable of at least one of external charging and external power supply.
- PHEV plug-in hybrid vehicle
- the external charging port 5 is, for example, an outlet for charging the battery 2 with an external charger, and is connected in parallel with the inverter 4 to the high voltage circuit of the battery 2.
- a connection detection sensor 51 is provided near the external charging port 5 to detect whether a charging gun of an external charger is connected to the external charging port 5.
- the connection detection sensor 51 is, for example, a voltage sensor for detecting that a charging gun of an external charger is connected to the external charging port 5.
- the auxiliary battery 6 is a secondary battery with a lower voltage than the battery 2.
- Auxiliary battery 6 is connected in parallel with inverter 4 to the high voltage circuit of battery 2 via DCDC converter 7 .
- the DCDC converter 7 is, for example, a step-down device that steps down the voltage when charging the auxiliary battery 6 from the battery 2.
- the operation of the DCDC converter 7 is controlled by the ECU 10.
- the auxiliary battery 6 is provided with a BMU (Battery Management Unit) 61 that manages the state of the auxiliary battery 6 .
- the BMU 61 calculates the state of charge (hereinafter referred to as "SOC") of the auxiliary battery 6 from the voltage, current, etc. of the auxiliary battery 6, and transmits the calculated SOC to the ECU 10.
- SOC state of charge
- the ECU 10 may be provided with a function to manage the state of the auxiliary battery 6, and the SOC of the auxiliary battery 6 may be calculated in the ECU 10.
- the ECU 10 is an electronic control unit configured as an LSI device or a built-in electronic device that integrates, for example, a microprocessor, ROM, RAM, etc., and is connected to a communication line of the network of the vehicle 1.
- a main power switch 8 power switch or engine switch
- the contactors 21 to 23, the MCU 46, and the DCDC converter 7 are connected to the output side of the ECU 10.
- the ECU 10 determines whether there is a possibility of welding to at least one of the contactors 21 to 23.
- the ECU 10 of this embodiment determines whether there is a possibility that the first contactor 21 will be welded.
- the first contactor 21 will also be referred to as the "target contactor 21.”
- the determination of whether or not there is a possibility of welding of the target contactor 21 is determined based on, for example, whether or not the target contactor 21 is short-circuited.
- short circuit here refers to a state where the movable contacts and fixed contacts of the contactors 21 to 23 are in contact regardless of on/off instructions, or regardless of on/off instructions to the contactors 21 to 23. This refers to a state in which conduction of the electric wires (circuits) in which the contactors 21 to 23 are interposed is no longer interrupted.
- welding determination control the control for determining whether or not there is a possibility of welding with respect to the target contactor 21.
- the cause of the short circuit between the contactors 21 to 23 is other than welding of the contactors 21 to 23.
- the movable contacts and fixed contacts of the contactors 21 to 23 are temporarily in contact due to misalignment of parts within the contactors 21 to 23, or if the electromagnetic coils of the contactors 21 to 23 are heated
- Another cause is that the displacement of the movable contacts of the contactors 21 to 23 is temporarily inhibited due to expansion.
- Such a temporary short circuit state of the contactors 21 to 23 can be eliminated if the cause of the short circuit is eliminated.
- the short circuit condition can be resolved if the positions of the components within the contactors 21 to 23 return to their original (normal) positions. Further, in the case of a short circuit caused by thermal expansion of the electromagnetic coil, the electromagnetic coil contracts when the electromagnetic coil cools down, so that the short circuit state can be resolved.
- the ECU 10 determines that there is a possibility of welding in the target contactor 21 as a result of the welding determination control, it performs control to eliminate the temporary contactor short circuit as described above. Specifically, vibration control is performed as a control to eliminate the short circuit caused by the above-mentioned deviation. In addition, off control is performed as control to eliminate the short circuit caused by the thermal expansion of the electromagnetic coil described above.
- the ECU 10 does not determine the presence or absence of a welding failure only based on the presence or absence of a short circuit in the target contactor 21, but by performing control to eliminate a temporary short circuit, the ECU 10 Prevents electrical wires downstream of ⁇ 23 from being maintained in a high voltage state (exposing live wires). Specifically, the ECU 10 performs the following four types of control as necessary, including the above-described welding determination control, vibration control, and off control, as processing after the high voltage circuit is used. (1) Welding judgment control (2) Vibration control (3) Voltage equalization control (4) Off control
- the ECU 10 when the ECU 10 receives a start signal requesting the start of running of the vehicle 1 while performing the vibration control or off control, the ECU 10 interrupts the vibration control or off control and returns the vehicle 1 to a driveable state.
- the start signal include an on signal output from the main power switch 8 when the user turns on the main power switch 8, and a signal that starts the vehicle 1 by automatic operation (for example, in an emergency) regardless of the user's operation.
- An example of this is a signal that is generated when there is a need to do so.
- the welding determination control is a control for determining whether or not there is a possibility that the target contactor 21 will be welded.
- the EUC 10 performs this welding determination control after using the high voltage circuit, after implementing vibration control, and after implementing off control.
- the ECU 10 controls the electric wire Lp on the side where the target contactor 21 is interposed to be in an open state and connects the discharge resistor 43 to the high voltage circuit for a predetermined determination time Tj. Then, the capacitor 42 is discharged. Then, after the determination time Tj has elapsed, the ECU 10 determines whether there is a possibility that the target contactor 21 is welded by detecting the capacitor voltage V.
- the determination time Tj is longer than the predetermined time (about 1 second) required for discharging the capacitor 42, and is set to a value of, for example, 2 to 20 seconds, taking into account variations in parts (such as the capacitor 42 and discharge resistor 43) required for discharging the capacitor 42. Set to seconds.
- the voltage of the capacitor 42 takes a value equivalent to the voltage of the battery 2 (battery voltage Vb).
- the ECU 10 stops the control signals transmitted to each of the contactors 21 and 23 so that the first contactor 21 and precharge contactor 23 on the positive electrode side are in the OFF state during the determination time Tj, and also controls the MCU 46
- the discharge switch 44 is controlled to be in the on state via the . Note that while the welding determination control is being performed, the ECU 10 maintains transmission of the control signal so that the second contactor 22 on the negative electrode side is in the on state.
- the capacitor voltage V decreases.
- the high voltage circuit remains closed even if the control signal to the first contactor 21 and precharge contactor 23 is stopped. Therefore, the charge stored in the capacitor 42 is not discharged, and the capacitor voltage V is maintained at the battery voltage Vb.
- the ECU 10 determines that the target contactor 21 is not welded, that is, is normal. Furthermore, if the capacitor voltage V is larger than the determination threshold Vth after the determination time Tj has elapsed, the ECU 10 determines that there is a possibility that the target contactor 21 is welded.
- the determination threshold value Vth is set, for example, to a value higher than the capacitor voltage V expected after the determination time Tj has elapsed in a state in which the capacitor 42 is normally discharged, and a value lower than the battery voltage Vb.
- the vibration control is a control that is performed when it is determined that there is a possibility of welding of the target contactor 21 as a result of the determination in the welding determination control, and is a control that is performed when it is determined that there is a possibility of welding of the target contactor 21.
- This is a control that attempts to resolve sexual short-circuits.
- the ECU 10 performs target vibration control in which the target contactor 21 is repeatedly turned on and off by intermittently transmitting a control signal to the target contactor 21 .
- the ECU 10 performs target vibration control in this manner and intermittently supplies an electrical control signal to the target contactor 21 to eliminate a temporary short circuit caused by the displacement of the target contactor 21.
- the ECU 10 also physically vibrates the movable contact of the target contactor 21 to eliminate misalignment of components within the target contactor 21.
- the ECU 10 of the present embodiment performs asymmetric vibration control in which the precharge contactor 23 is repeatedly turned on and off by intermittently transmitting a control signal to the precharge contactor 23.
- Non-target vibration control is performed before target vibration control is implemented.
- the ECU 10 vibrates the precharge contactor 23 and uses the vibration to eliminate the deviation within the target contactor 21.
- the vibrations of the precharge contactor 23 are transmitted to the target contactor 21 via, for example, a bus bar and a harness (none of which are shown) provided in the high voltage circuit. Further, when the precharge contactor 23 is adjacent to the target contactor 21, the vibration of the precharge contactor 23 can be directly transmitted to the target contactor 21.
- the ECU 10 of the present embodiment maintains the first contactor 21 in the ON state while implementing the non-target vibration control, and maintains the precharge contactor 23 in the ON state while implementing the target vibration control. Furthermore, while the vibration control is being performed, the ECU 10 maintains the second contactor 22 in the on state. In this way, when one of the two contactors 21 and 23 connected in parallel is repeatedly turned on and off, the ECU 10 maintains the other in the on state, thereby reducing the voltage of the high voltage circuit (on the capacitor 42 side). voltage) is maintained at a value equivalent to the battery voltage Vb. This prevents one of the contactors 21 and 23, which are repeatedly turned on and off, from being welded together due to the inrush current at the time of turning on and off. Furthermore, welding determination control after vibration control can be efficiently performed. Note that during the vibration control, the ECU 10 controls the discharge switch 44 to be in the off state.
- the voltage equalization control is control performed before the vibration control, and is control to equalize the voltage of the capacitor 42 and the battery 2. This voltage equalization control is used to prevent the subsequent This is done to prevent inrush current from flowing into high voltage circuits during vibration control.
- the causes of the above-mentioned erroneous determination include, for example, abnormalities related to electrical signals such as errors in the ECU 10 and failures in the voltmeter 45.
- the ECU 10 controls the second contactor 22 and the precharge contactor 23 to be in the on state and the first contactor 21 to be in the off state during a predetermined voltage equalization time Tep, and also controls the discharge switch 44 to be in the off state. is controlled to the off state.
- the voltage equalization time Tep is the time required to charge the capacitor 42, and is set to, for example, several hundred milliseconds to one second.
- the off control is performed when it is determined that there is a possibility that the target contactor 21 is welded as a result of the welding determination control performed after the vibration control.
- the off control is a control that attempts to eliminate a temporary short circuit caused by thermal expansion of the electromagnetic coil of the target contactor 21.
- the ECU 10 prohibits the excitation of the electromagnetic coil of the target contactor 21 by prohibiting (stopping) the transmission of a control signal to the target contactor 21 during a predetermined off time Toff (fixed time).
- the ECU 10 thus prohibits energization (energization on the excitation side) to the target contactor 21 during the off time Toff, thereby cooling the electromagnetic coil of the target contactor 21 and eliminating the temporary short circuit.
- the off time Toff is the time required for the thermally expanded electromagnetic coil of the target contactor 21 to cool down to a temperature equivalent to the outside air temperature, and is set to, for example, 1 to 2 hours.
- the ECU 10 of this embodiment maintains the second contactor 22 and the precharge contactor 23 in the on state while performing the off control, and interrupts the off control when the start signal is input. That is, the ECU 10 controls the second contactor 22 and the precharge contactor 23 as described above, thereby enabling the vehicle 1 to run quickly after the off-control is interrupted. Furthermore, welding determination control after off-control can be efficiently performed. Note that the ECU 10 controls the discharge switch 44 to be in the OFF state during execution of the OFF control.
- the ECU 10 of the present embodiment activates the DCDC converter 7 to charge the auxiliary battery 6 when the SOC of the auxiliary battery 6 becomes equal to or lower than a predetermined lower limit value TH during off-control.
- the lower limit value TH is set to a value larger than 0, and is set to a value that can output the power necessary to start up various electrical components installed in the vehicle at least when the high voltage circuit starts to be used.
- the start control is a control that makes the vehicle 1 ready to travel after the vibration control or off control is interrupted.
- the ECU 10 outputs a control signal to the second contactor 22 and the precharge contactor 23 to turn them on, and also turns the discharge switch 44 off, and then slightly follows from there to turn the discharge switch 44 on to the first contactor 21. Outputs a control signal.
- the ECU 10 turns off the precharge contactor 23 by stopping the control signal to the precharge contactor 23 after the startup time Tsu has elapsed since turning on the precharge contactor 23 .
- the inverter 4 and the drive motor 3 are in a driveable state, that is, the vehicle 1 is in a driveable state.
- the ECU 10 when the ECU 10 receives a signal from the connection detection sensor 51 indicating that a charging gun of an external charger is connected to the external charging port 5 while implementing the vibration control or off control, the ECU 10 also interrupts the vibration control or off control.
- the above-mentioned start control may be implemented.
- the high voltage circuit enters a state in which the battery 2 can be charged from an external charger.
- the ECU 10 includes a determination section 11, a voltage equalization control section 12, a vibration control section 13, a re-determination section 14, an off control section 15, a final A determination section 16, an interruption instruction section 17, and a start control section (travel control section) 18 are provided.
- These elements are shown by classifying the functions of the ECU 10 for convenience. Each of these elements may be realized by electronic circuits (hardware), may be programmed as software, or some of these functions may be provided as hardware and other parts may be provided as software. It may be something.
- the determination unit 11 performs the above-mentioned welding determination control after the high voltage circuit is used. Specifically, the determination unit 11 controls each of the contactors 21 to 23 and the discharge switch 44 as described above during the determination time Tj, and after the determination time Tj has elapsed, the capacitor voltage is measured from the voltmeter 45 via the MCU 46. Get V. If the acquired voltage V is less than or equal to the determination threshold Vth, the determination unit 11 determines that the target contactor 21 is normal and turns off all the contactors 21 to 23. On the other hand, if the acquired voltage V is higher than the determination threshold Vth, the determination unit 11 determines that there is a possibility of welding of the target contactor 21, and applies the determination result to the voltage equalization control unit 12 and vibration control. 13.
- the voltage equalization control section 12 performs the voltage equalization control described above when receiving the determination result from the determination section 11. Specifically, the voltage equalization control unit 12 controls each contactor 21 to 23 and the discharge switch 44 as described above during the voltage equalization time Tep, and after the voltage equalization time Tep has elapsed, the voltage equalization is performed. The fact that the control has been completed is transmitted to the vibration control section 13.
- the vibration control unit 13 performs the above-described vibration control when receiving the determination result from the determination unit 11 and receiving a signal indicating completion of voltage equalization control from the voltage equalization control unit 12. Specifically, the vibration control unit 13 performs non-target vibration control and target vibration control in this order as the above-described vibration control. In the non-target vibration control, the vibration control unit 13 repeats turning on and off the precharge contactor 23 a predetermined number of times (for example, several tens of times), and controls the first contactor 21, the second contactor 22, and the discharge switch 44 as described above. do.
- the vibration control unit 13 repeats turning on and off the first contactor 21 a predetermined number of times (for example, several tens of times), and turns on the second contactor 22, precharge contactor 23, and discharge switch 44 as described above. Control. After the vibration control is completed, the vibration control unit 13 notifies the re-determination unit 14 that the vibration control has been completed. Moreover, when the vibration control unit 13 receives an interruption instruction from the interruption instruction unit 17, it interrupts the vibration control described above.
- the re-judgment unit 14 executes the above-described welding determination control similarly to the determination unit 11. If the acquired voltage V is equal to or lower than the determination threshold value Vth after the determination time Tj has elapsed, the re-determination unit 14 determines that the target contactor 21 is normal and turns all the contactors 21 to 23 into an OFF state. do. On the other hand, if the acquired voltage V is higher than the determination threshold Vth, the re-determination unit 14 determines that there is a possibility that the target contactor 21 is welded, and transmits the determination result to the off control unit 15.
- the off control unit 15 executes the above-mentioned off control when receiving the determination result from the re-judgment unit 14. Specifically, the off control section 15 controls each of the contactors 21 to 23 and the discharge switch 44 as described above. Further, the off control device 15 acquires the SOC of the auxiliary battery 6 from the BMU 61 during the off control, and when the SOC of the auxiliary battery 6 becomes lower limit value TH or less, the OFF control device 15 switches the DCDC converter 7 to the above-mentioned state. Control as follows. After completing the off control, the off control unit 15 notifies the final determination unit 16 that the off control has been completed. Moreover, when the off control unit 15 receives an interruption instruction from the interruption instruction unit 17, it interrupts the above-mentioned off control.
- the final determination unit 16 When the final determination unit 16 receives a signal indicating completion of the off control from the off control unit 15, the final determination unit 16 executes the above-described welding determination control similarly to the determination unit 11 and the re-determination unit 14. If the acquired voltage V is equal to or less than the determination threshold value Vth after the determination time Tj has elapsed, the final determination unit 16 determines that the target contactor 21 is normal and turns all the contactors 21 to 23 into an OFF state. do. On the other hand, if the acquired voltage V is higher than the determination threshold Vth, the final determination unit 16 determines that the target contactor 21 has a welding failure.
- the final determination unit 16 determines that the target contactor 21 has a welding failure, it turns off all the contactors 21 to 23 and executes fail-safe processing for the vehicle 1.
- the final determination unit 16 may prohibit the vehicle 1 from being able to run, or may activate an on-vehicle alarm device (not shown) as execution of the failsafe process.
- the interruption instruction section 17 transmits an instruction to interrupt vibration control or an instruction to interrupt off control to the vibration control section 13 or off control section 15.
- the interruption instruction section 17 transmits an interruption instruction to the vibration control section 13 when receiving the above-mentioned start signal while implementing vibration control, and when receiving the above-mentioned start signal during implementation of off-control. transmits an interruption instruction to the off control section 15.
- the interruption instruction unit 17 of the present embodiment also causes the vibration control unit 13 or The interrupt instruction is transmitted to the off control unit 15.
- the suspension instruction section 17 transmits a signal indicating that the suspension instruction has been transmitted to the start control section 18.
- the start control unit 18 When the start control unit 18 receives a signal from the interruption instruction unit 17, it performs start control by controlling each of the contactors 21 to 23 and the discharge switch 44 as described above. Further, after completion of the start control, the start control unit 18 drives the drive motor 3 by controlling the inverter circuit 41 via the MCU 46 in response to the user's operation, thereby causing the vehicle 1 to travel.
- flowchart] 3 and 4 are flowchart examples for explaining the processing performed by the ECU 10 after the high voltage circuit is used. This flowchart is executed after the high voltage circuit is used, for example, when the main power switch 8 is turned off or when the external charger is removed from the external charging port 5.
- step S1 the above-described welding determination control is performed, and the process proceeds to step S2.
- step S2 it is determined whether or not there is a possibility that the target contactor 21 is welded.
- step S2 if it is determined that there is no possibility of welding of the target contactor 21, it is determined that the target contactor 21 is normal, and this flow ends. On the other hand, if it is determined in step S2 that there is a possibility of welding of the target contactor 21, the process advances to step S3.
- step S3 the voltage equalization control described above is performed, and in the subsequent step S4, the vibration control described above is started, and the process proceeds to step S5.
- step S5 it is determined whether or not a start signal requesting the start of running of the vehicle 1 has been received. If the start signal has not been received, in the following step S6, the charging gun of the external charger is connected to the external charging port 5. It is determined whether or not it is connected. If the charging gun is not connected, both step S5 and step S6 are not established, so the process proceeds to step S7, where it is determined whether vibration control is completed. If it is determined in step S7 that the vibration control has not been completed, the process returns to step S5, and the determinations in steps S5 and S6 are repeated until it is determined in step S7 that the vibration control has been completed.
- step S5 if it is determined in step S5 that a start signal requesting the start of running of the vehicle 1 has been received, or if it is determined in step S6 that the charging gun of the external charger is connected to the external charging port 5. If so, the process advances to step S8 and the vibration control is interrupted. Then, the process advances to step S9, the above-described start control is performed, and this flow ends.
- step S7 is true and the process proceeds to step S10.
- step S10 welding determination control is performed again. Then, the process proceeds to step S11, and it is determined again whether or not there is a possibility that the target contactor 21 is welded.
- step S11 if it is determined that there is no possibility of welding of the target contactor 21, it is determined that the target contactor 21 is normal because the temporary short circuit caused by the misalignment has been resolved. , end this flow. On the other hand, if it is determined in step S11 that there is a possibility of welding of the target contactor 21, the process advances to step S12.
- step S12 the processes of steps S21 to S30 in FIG. 4 are executed to implement the above-described off control.
- a count T of a timer built in the ECU 10 is started as the start of off control, and the process proceeds to step S22, where the first contactor 21 (P contactor) is turned off and the second contactor 21 (P contactor) is turned off. 22 (N contactor) and precharge contactor 23 (Pre contactor) are turned on.
- step S23 it is determined whether or not a start signal requesting the vehicle 1 to start traveling is received. If the start signal has not been received, in the subsequent step S24, the external charger is connected to the external charging port 5. A determination is made whether the gun is connected.
- step S23 If it is determined in step S23 that a start signal requesting the start of running of the vehicle 1 has been received, or if it is determined in step S24 that the charging gun of the external charger is connected to the external charging port 5, , the process advances to step S28, and the off control is interrupted. Then, the process advances to step S29, the above-described start control is performed, and this flow ends.
- step S25 the SOC of the auxiliary battery 6 reaches the lower limit value TH. It is determined whether or not the value is below. If it is determined in step S25 that the SOC of the auxiliary battery 6 is higher than the lower limit value TH, the process advances to step S27. On the other hand, if it is determined in step S25 that the SOC of the auxiliary battery 6 is less than or equal to the lower limit value TH, the DCDC converter 7 is activated in step S26, and then the process proceeds to step S27.
- step S27 it is determined whether the count T is greater than or equal to the off time Toff. If it is determined in step S27 that the count T is less than the off time Toff, the process returns to step S23, and the processes in steps S23 to S26 are repeated until the determination in step S27 is satisfied. If the determination in step S27 is satisfied, the count T is reset in step S30, and the process returns to step S13 in FIG. 3.
- step S13 the final welding determination control is performed. Then, the process proceeds to step S14, where a final determination is made as to whether or not there is a possibility that the target contactor 21 will be welded.
- step S14 if it is determined that there is no possibility of welding of the target contactor 21, it is determined that the target contactor 21 is normal because the temporary short circuit state caused by thermal expansion has been resolved. , end this flow. On the other hand, if it is finally determined in step S14 that there is a possibility of welding of the target contactor 21, it is determined that the target contactor 21 has a welding failure, and fail-safe processing of the vehicle 1 is performed in step S15. Implemented. Finish this flow.
- the ECU 10 performs welding determination control ( P welding determination) is performed.
- the first contactor 21 (P contactor) and the precharge contactor 23 (Pre contactor) on the positive electrode side are controlled to be in the OFF state, and the second contactor 22 (N contactor) is controlled to be in the ON state.
- both the first contactor 21 and the precharge contactor 23 are not short-circuited, as shown by the broken line in FIG. It gradually decreases toward t2 and becomes below the determination threshold value Vth.
- the ECU 10 determines that the target contactor 21 is normal when the capacitor voltage V is equal to or lower than the determination threshold value Vth at time t2.
- the capacitor 42 is not discharged, so that the capacitor voltage V increases from time t1 to time t2, as shown by the solid line in FIG. The voltage is maintained near the battery voltage Vb without falling below the determination threshold Vth.
- the capacitor voltage V is higher than the determination threshold value Vth at time t2, it is determined that there is a possibility that the target contactor 21 is welded.
- the ECU 10 performs voltage equalization control from time t2 until the voltage equalization time Tep elapses.
- the precharge contactor 23 is controlled to be in the on state while the first contactor 21 is kept in the off state and the second contactor 22 is kept in the on state.
- the capacitor 42 is not discharged in the welding determination control performed first. Therefore, capacitor voltage V is maintained near battery voltage Vb at time t2. Therefore, as shown by the solid line in FIG. 5, the capacitor voltage V does not vary from time t2 to time t3 after the voltage equalization time Tep has elapsed, and is maintained near the battery voltage Vb.
- the ECU 10 determines that there is a "possibility of welding" even though the actual voltage V of the capacitor 42 is close to 0 at time t2. be.
- the capacitor voltage V is charged to around the battery voltage Vb as the capacitor 42 is charged from time t2 to time t3, as shown by the two-dot chain line in FIG. be done. This suppresses inrush current from flowing into the high voltage circuit at the start of the subsequent vibration control.
- the ECU 10 starts vibration control.
- vibration control non-target vibration control and target vibration control are performed in this order.
- the non-target vibration control the precharge contactor 23 is repeatedly turned on and off. Thereby, the vibration of the precharge contactor 23 is transmitted to the first contactor 21, and the short circuit caused by the displacement of the first contactor 21 is eliminated. Further, if the determination result in the previously executed welding determination control is that the short circuit of the precharge contactor 23 is caused, the short circuit caused by the displacement of the precharge contactor 23 is resolved.
- the first contactor 21 is repeatedly turned on and off. In this way, by intermittently applying an electrical control signal to the target contactor 21, it is possible to eliminate a temporary short circuit caused by the displacement of the target contactor 21. In addition, by physically vibrating the movable contact within the first contactor 21, short circuits caused by the displacement of the first contactor 21 can be eliminated. In addition, if the determination result in the previously executed welding determination control is that it is caused by a short circuit in the precharge contactor 23, the vibration of the first contactor 21 is transmitted to the precharge contactor 23, and the precharge Short circuits caused by misalignment of the contactor 23 can be eliminated.
- the vibration control while the second contactor 22 is kept in the on state, the first contactor 21 is controlled to be in the on state by non-target vibration control, and the precharge contactor 23 is controlled to be in the on state by target vibration control. .
- the capacitor voltage V is maintained in the vicinity of the battery voltage Vb, as shown by the solid line in FIG. Control can be carried out efficiently.
- the vibration control eliminates not only the misalignment of the first contactor 21 and the precharge contactor 23 but also short circuits caused by light welding of the contactors 21 and 22.
- the ECU 10 performs the welding determination control again.
- the capacitor voltage V will change from time t4 to the determination period as shown by the broken line in FIG. It gradually decreases toward time t5 after Tj has elapsed.
- the ECU 10 determines that the target contactor 21 is normal when the capacitor voltage V is equal to or lower than the determination threshold value Vth at time t5.
- the capacitor voltage V is lower than the battery voltage Vb. maintained in the vicinity. Therefore, the ECU 10 determines that there is a possibility that the target contactor 21 is welded because the capacitor voltage V is higher than the determination threshold value Vth at time t5.
- the ECU 10 performs off control from time t5 until the off time Toff elapses.
- the first contactor 21 is controlled to be in the off state until the off time Toff elapses, so that energization of the first contactor 21 is prohibited.
- the electromagnetic coil of the target contactor 21 has thermally expanded, the electromagnetic coil will radiate heat and shrink over time to a temperature equivalent to the outside air temperature. Therefore, the displacement of the movable contact that has been inhibited by the thermally expanded electromagnetic coil is allowed, and the short circuit caused by the thermal expansion is eliminated.
- the second contactor 22 and the precharge contactor 23 are controlled to be in the on state.
- the capacitor voltage V is maintained near the battery voltage Vb, as shown by the solid line in FIG. Therefore, subsequent welding determination control can be carried out efficiently.
- the off control when the SOC of the auxiliary battery 6 becomes equal to or lower than a predetermined lower limit value TH, the DCDC converter 7 is activated and the auxiliary battery 6 is charged. This prevents the auxiliary battery 6 from running out of power while the off control is being performed. Furthermore, as described above, in the off control of this embodiment, the second contactor 22 and the precharge contactor 23 are controlled to be in the on state, so that the capacitor voltage V is maintained near the battery voltage Vb. , charging of the auxiliary battery 6 can be started promptly.
- the ECU 10 performs the final welding determination control. At this time, if the short circuit in the target contactor 21 is eliminated by implementing the OFF control, the capacitor voltage V gradually decreases from time t6 to time t7 after the elapse of the determination time Tj, as shown by the broken line in FIG. do. The ECU 10 determines that the target contactor 21 is normal when the capacitor voltage V is equal to or lower than the determination threshold value Vth at time t7.
- the capacitor voltage V becomes lower than the battery voltage Vb, as shown by the solid line in FIG. maintained in the vicinity. Therefore, in the ECU 10, since the capacitor voltage V is larger than the determination threshold value Vth at time t7, it is determined that the target contactor 21 has a welding failure, and fail-safe processing is performed.
- vibration control is performed when there is a possibility of welding of the target contactor 21 after use of the high voltage circuit, so that temporary short circuits due to misalignment of the target contactor 21 are prevented. It is possible to resolve the issue.
- the target vibration control included in the vibration control is performed on the target contactor 21 itself, there is no need to install new devices or parts to eliminate the temporary short circuit, and the vehicle 1 Complexity and cost increases can be suppressed.
- the non-target vibration control in which the precharge contactor 23 is repeatedly turned on and off is performed before the target vibration control.
- the positional shift can be prevented to the extent that its movable contacts hardly move. Even in such a case, it is possible to eliminate temporary short circuits caused by misalignment.
- the non-targeted vibration control is performed targeting the existing precharge contactor 23, there is no need to install new devices or parts to resolve the temporary short circuit, which increases the complexity of the vehicle 1. It is possible to suppress the increase in costs.
- the vibration control unit 13 controls the first contactor 21 to be in the ON state while performing non-target vibration control, and controls the precharge contactor 23 to be in the ON state while performing target vibration control. Further, the ECU 10 determines again whether or not there is a possibility that the target contactor 21 will be welded after implementing the vibration control. Thereby, it is possible to prevent the capacitor voltage V from decreasing, so that there is no need to perform the process of recharging the capacitor 42 when performing the subsequent welding determination control, and the subsequent welding determination control can be efficiently performed.
- the off control is performed. Thereby, it is possible to eliminate a temporary short circuit due to a reason different from the displacement of the target contactor 21, that is, thermal expansion of the excitation coil.
- the temporary short circuit is eliminated by prohibiting energization to the target contactor 21 during the off time Toff, so there is no need to install new devices or parts, and the vehicle The complexity and cost increase can be suppressed.
- the configuration of the ECU 10 and the control performed by the ECU 10 described above are examples.
- the target contactor for which the possibility of welding is determined after use of the high voltage circuit is not limited to the first contactor 21, but may be the second contactor 22 or the precharge contactor 23. Further, the ECU 10 may perform the above-described control on all contactors provided in the high voltage circuit after the high voltage circuit is used.
- contactors 21 to 23 may be placed either inside or outside the case housing the battery 2.
- Precharge contactor 23 may be connected in parallel with second contactor 22.
- the high voltage circuit may be provided with two precharge contactors 23 connected in parallel to each of the first contactor 21 and the second contactor 22.
- the voltage equalization control section 12, the re-determination section 14, the off control section 15, the final determination section 16, the interruption instruction section 17, and the start control section 18 may be omitted.
- the ECU 10 may have a configuration that does not interrupt vibration control or off-control while performing these controls, may have a configuration that does not perform off-control, and may not perform voltage equalization control before vibration control. It may be a configuration.
- the determination section 11 transmits the determination result only to the vibration control section 13, and the vibration control section 13 performs the above vibration control when receiving the determination result. All you have to do is implement it. Note that the determination of whether there is a possibility of welding does not need to be performed multiple times.
- vibration control at least target vibration control may be implemented, and non-target vibration control may be omitted. Further, the vibration control unit 13 may perform vibration control multiple times. In this case, it is possible to further eliminate short circuits due to displacement of the target contactor 21. Further, in the ECU 10, after the re-determination unit 14 performs the welding determination control, the vibration control unit 13 may perform the vibration control again. In this way, by retrying the vibration control, it is possible to further eliminate the short circuit caused by the displacement of the target contactor 21.
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Abstract
Description
(1)ここで開示する車載制御装置は、車両に搭載されたバッテリの高電圧回路を断接する対象コンタクタの溶着の可能性の有無を前記高電圧回路の使用後に判定する判定部と、前記判定部により前記対象コンタクタの溶着の可能性があると判定された場合に、前記対象コンタクタのオンオフを繰り返す対象振動制御を含む振動制御を実施する振動制御部と、を備える。
(6)前記車載制御装置は、前記車両の走行開始を要求する開始信号を受信した場合に、前記車両を走行可能とする走行制御部をさらに備えることが好ましい。この場合、前記振動制御部は、前記開始信号が受信された場合に前記振動制御を中断し、前記走行制御部は、前記振動制御の中断後に前記車両を走行可能状態とし、ユーザの操作に応じて前記車両を制御することが好ましい。
図1は、本実施形態に係る車載制御装置10(以下、「ECU10」ともよぶ)が適用された車両1の模式図であり、図2は、車両1に搭載されたバッテリ2と他の装置と間の電気的な接続を示す回路図と、車載制御装置10のブロック構成図と、を併せて示す図である。
ECU10は、上述の通り、バッテリ2の高電圧回路の使用後に、コンタクタ21~23の少なくとも一つに対して溶着の可能性の有無を判定する。本実施形態のECU10は、第一コンタクタ21の溶着の可能性の有無を判定する。以下、第一コンタクタ21を「対象コンタクタ21」ともよぶ。対象コンタクタ21の溶着の可能性の有無の判定は、例えば、対象コンタクタ21の短絡の有無により判定される。なお、ここでいう「短絡」とは、コンタクタ21~23の可動接点と固定接点とがオンオフの指示に関わらず接触してしまっている状態や、コンタクタ21~23へのオンオフ指示に関わらず、コンタクタ21~23が介装される電線(回路)の導通が遮断されなくなっている状態を意味する。以下、対象コンタクタ21に対して溶着の可能性の有無を判定する制御を「溶着判定制御」とよぶ。
(1)溶着判定制御
(2)振動制御
(3)等電圧化制御
(4)オフ制御
図2に示すように、ECU10には、上述の各制御を実施するための要素として、判定部11,等電圧化制御部12,振動制御部13,再判定部14,オフ制御部15,最終判定部16,中断指示部17及び開始制御部(走行制御部)18が設けられる。これらの要素は、ECU10の機能を便宜的に分類して示したものである。これらの各要素は電子回路(ハードウェア)によって実現してもよく、ソフトウェアとしてプログラミングされたものとしてもよいし、あるいはこれらの機能のうちの一部をハードウェアとして設け、他部をソフトウェアとしたものであってもよい。
図3及び図4は、ECU10で実施される高電圧回路の使用後の処理を説明するためのフローチャート例である。このフローチャートは、高電圧回路の使用後、例えば、主電源スイッチ8がオフ操作された場合、又は、外部充電器が外部充電口5から外された場合に実施される。
図5を参照して、ECU10の作用を説明する。図5のタイムチャートの横軸は時間である。図5では、時刻t0で、例えば、主電源スイッチ8がオフ操作されたことに伴い高電圧回路の使用が終了したものとする。
(1)上述したECU10によれば、高電圧回路の使用後、対象コンタクタ21の溶着の可能性がある場合に、振動制御が実施されるため、対象コンタクタ21のずれによる一過性の短絡の解消を図ることができる。また、このように、高電圧回路の使用後に、対象コンタクタ21の溶着の可能性の有無を判定するだけでなく、振動制御を実施して対象コンタクタ21の一過性の短絡の解消を図ることで、高電圧回路の使用後の活線露出を防ぐことができる。さらには、不要なフェールセーフによって、車両1が走行できなくなる状態を防ぐことができる。また、振動制御に含まれる対象振動制御は、対象コンタクタ21そのものを対象として行われるため、当該一過性の短絡の解消を図るための新たな装置や部品などを設ける必要がなく、車両1の複雑化やコストアップを抑制することができる。
上述のECU10の構成及びECU10で実施される制御は一例である。高電圧回路の使用後に溶着の可能性の有無が判定される対象コンタクタは、第一コンタクタ21に限らず、第二コンタクタ22やプリチャージコンタクタ23であってもよい。また、ECU10は、高電圧回路の使用後に、高電圧回路に設けられた全てのコンタクタに対して上述の制御を実施してもよい。
2 バッテリ
10 ECU(車載制御装置)
11 判定部
12 等電圧化制御部
13 振動制御部
15 オフ制御部
18 開始制御部(走行制御部)
21 第一コンタクタ(対象コンタクタ)
22 第二コンタクタ
23 プリチャージコンタクタ
24 プリチャージ抵抗器(抵抗器)
42 平滑化コンデンサ(コンデンサ)
Toff オフ時間(一定時間)
Claims (8)
- 車両に搭載されたバッテリの高電圧回路を断接する対象コンタクタの溶着の可能性の有無を前記高電圧回路の使用後に判定する判定部と、
前記判定部により前記対象コンタクタの溶着の可能性があると判定された場合に、前記対象コンタクタのオンオフを繰り返す対象振動制御を含む振動制御を実施する振動制御部と、を備える
ことを特徴とする、車載制御装置。 - 前記高電圧回路には、正極側及び負極側の一方に介装された第一コンタクタと、前記正極側及び前記負極側の他方に介装された第二コンタクタと、前記第一コンタクタに並列接続されるとともに抵抗器と直列接続されたプリチャージコンタクタと、が設けられており、
前記対象コンタクタは、前記第一コンタクタであり、
前記振動制御には、前記対象振動制御の実施前に前記プリチャージコンタクタのオンオフを繰り返す非対象振動制御が含まれる
ことを特徴とする、請求項1に記載の車載制御装置。 - 前記車両には、前記第一コンタクタ及び前記第二コンタクタのそれぞれを介して前記バッテリに接続されるコンデンサが設けられ、
前記判定部により前記対象コンタクタの溶着の可能性があると判定された場合において、前記振動制御部による前記振動制御の実施前に、前記プリチャージコンタクタをオン状態として、前記コンデンサを前記バッテリと等電圧化する等電圧化制御部をさらに備える
ことを特徴とする、請求項2に記載の車載制御装置。 - 前記振動制御部は、前記非対象振動制御の実施中に前記対象コンタクタをオン状態に維持し、前記対象振動制御の実施中に前記プリチャージコンタクタをオン状態に維持し、
前記判定部は、前記振動制御部による前記振動制御の実施後に、前記対象コンタクタの溶着の可能性の有無を再度判定する
ことを特徴とする、請求項2又は3に記載の車載制御装置。 - 前記振動制御部は、前記振動制御を複数回実施する
ことを特徴とする、請求項1~4のいずれか一項に記載の車載制御装置。 - 前記車両の走行開始を要求する開始信号を受信した場合に、前記車両を走行可能とする走行制御部をさらに備え、
前記振動制御部は、前記開始信号が受信された場合に前記振動制御を中断し、
前記走行制御部は、前記振動制御の中断後に前記車両を走行可能状態とし、ユーザの操作に応じて前記車両を制御する
ことを特徴とする、請求項1~5のいずれか一項に記載の車載制御装置。 - 前記対象コンタクタへの通電を一定時間のあいだ禁止するオフ制御を実施するオフ制御部をさらに備え、
前記オフ制御部は、前記判定部により前記対象コンタクタの溶着の可能性があると再度判定された場合に、前記オフ制御を実施する
ことを特徴とする、請求項4又は請求項4を引用する請求項5及び6のいずれか一項に記載の車載制御装置。 - 前記車両の走行開始を要求する開始信号を受信した場合に、前記車両を走行可能とする走行制御部をさらに備え、
前記オフ制御部は、前記開始信号が受信された場合に前記オフ制御を中断し、
前記走行制御部は、前記オフ制御の中断後に前記車両を走行可能状態とし、ユーザの操作に応じて前記車両を制御する
ことを特徴とする、請求項7に記載の車載制御装置。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59194324A (ja) * | 1983-04-19 | 1984-11-05 | 松下電器産業株式会社 | 継電器の制御方法 |
JPS63264837A (ja) * | 1987-04-21 | 1988-11-01 | Matsushita Electric Ind Co Ltd | リレ−駆動装置 |
JP2006278210A (ja) * | 2005-03-30 | 2006-10-12 | Toyota Motor Corp | 故障診断装置および故障診断方法 |
JP2018156859A (ja) * | 2017-03-17 | 2018-10-04 | 三菱自動車工業株式会社 | コンタクタ溶着判定装置 |
JP2020039220A (ja) * | 2018-09-04 | 2020-03-12 | 三菱自動車工業株式会社 | 電動車両の電源装置 |
JP2020202605A (ja) | 2019-06-06 | 2020-12-17 | 本田技研工業株式会社 | 電源システム |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS59194324A (ja) * | 1983-04-19 | 1984-11-05 | 松下電器産業株式会社 | 継電器の制御方法 |
JPS63264837A (ja) * | 1987-04-21 | 1988-11-01 | Matsushita Electric Ind Co Ltd | リレ−駆動装置 |
JP2006278210A (ja) * | 2005-03-30 | 2006-10-12 | Toyota Motor Corp | 故障診断装置および故障診断方法 |
JP2018156859A (ja) * | 2017-03-17 | 2018-10-04 | 三菱自動車工業株式会社 | コンタクタ溶着判定装置 |
JP2020039220A (ja) * | 2018-09-04 | 2020-03-12 | 三菱自動車工業株式会社 | 電動車両の電源装置 |
JP2020202605A (ja) | 2019-06-06 | 2020-12-17 | 本田技研工業株式会社 | 電源システム |
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