JP2022137772A - vehicle - Google Patents

Abstract

To improve convenience for a user regarding the use of an outlet during external charging.SOLUTION: When a my room mode is ineffective (OFF) during AC charging (NO in S2), an ECU switches a control mode to a charging mode (S3). When the my room mode is effective (ON) during AC charging (YES in S2) and an electric power of AC 100 V is supplied from an inlet (YES in S5), the ECU switches the control mode to a first my room mode (S9). When the my room mode is effective (ON) during AC charging (YES in S2) and an electric power of AC 200 V is supplied from the inlet (NO in S5), the ECU switches the control mode to a second my room mode (S15).SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present disclosure relates to a vehicle configured to be capable of external charging, in which power is received from a power source external to the vehicle to charge an on-vehicle battery.

International Publication No. 2012/056516 (Patent Document 1) discloses a vehicle configured to output AC (Alternating current) power received at an inlet from an external power supply outside the vehicle to an outlet provided in the vehicle. disclosed.

WO2012/056516

In a vehicle with an in-vehicle outlet, such as that disclosed in Patent Document 1, an electric device brought into the vehicle is plugged into the outlet during external charging, in which electric power is received from a power supply outside the vehicle to charge an in-vehicle battery. It is conceivable to use it by connecting to

However, there are cases in the market where, for example, an external power supply that supplies AC 100V power and an external power supply that supplies AC 200V power coexist. In this case, the voltage of the power supplied to the outlet differs depending on which external power supply the vehicle receives power from. In general, an outlet has a defined shape corresponding to its rated voltage, but in the above case a voltage that does not conform to the shape may be supplied to the outlet. In this case, the electrical equipment connected to the outlet is supplied with a voltage different from the voltage supported by the electrical equipment, which may cause the electrical equipment to malfunction. Therefore, if there are external power sources on the market that supply electric power of different voltages, the outlet cannot be used during external charging, resulting in reduced convenience for the user.

The present disclosure has been made to solve the above problems, and the purpose thereof is to improve user convenience regarding the use of outlets during external charging.

A vehicle according to this disclosure is a vehicle that is configured to be capable of external charging by receiving electric power from a power source external to the vehicle and charging an on-vehicle battery. The vehicle includes an inlet for receiving AC power supplied from a power supply, a voltage sensor for detecting the voltage of the AC power, and a power conversion device configured to convert the AC power into charging power for the battery to charge the battery. , a power line that electrically connects the inlet and the power converter, an outlet for outputting AC power of a predetermined rated voltage supplied from the power line, and a power line and the outlet provided between the power line and the outlet. and a second state of electrically disconnecting the power line and the outlet, and a control device for controlling the relay. When external charging is performed, the control device controls the relay to the first state when the detected voltage of the voltage sensor is a value corresponding to the predetermined rated voltage, and the detected voltage corresponds to the predetermined rated voltage. If not, it controls the relay to the second state.

According to the above configuration, when the detected value of the voltage sensor, that is, the voltage of the AC power supplied to the inlet from the power supply outside the vehicle is a value corresponding to a predetermined rated voltage (for example, AC 100 V), the control device controls the relay to the first state. This allows AC power to be supplied to the outlet, allowing the outlet to be used during external charging. On the other hand, when the detected value of the voltage sensor does not correspond to the predetermined rated voltage, the control device controls the relay to the second state. As a result, the outlet and the power line are electrically cut off, so AC power is not supplied to the outlet, and the outlet cannot be used during external charging. By executing the control as described above, the outlet can supply AC power with a predetermined rated voltage. That is, when AC power with a predetermined rated voltage is supplied to the inlet from a power supply outside the vehicle, the outlet inside the vehicle can be used during external charging. Therefore, the user's convenience can be improved compared to the case where the use of the outlet during external charging is uniformly prohibited.

Advantageous Effects of Invention According to the present disclosure, it is possible to improve user convenience regarding the use of an outlet during external charging.

1 is a diagram showing a configuration of a vehicle according to an embodiment; FIG. 4 is a flowchart showing a procedure of processing executed when a charging start operation is performed;

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

FIG. 1 is a diagram showing the configuration of a vehicle 1 according to this embodiment. Vehicle 1 according to the present embodiment is an electric vehicle. Note that the vehicle 1 is not limited to an electric vehicle as long as it can be externally charged. For example, vehicle 1 may be a plug-in hybrid vehicle or a fuel cell vehicle.

Referring to FIG. 1, a vehicle 1 includes a battery 10, a system main relay (hereinafter also referred to as "SMR (System Main Relay)") 20, and a power control unit (hereinafter also referred to as "PCU (Power Control Unit)"). 30, a motor generator 40, a power transmission gear 50, a drive wheel 55, an inlet 60, a two-way charger 70, an outlet 80, a my room mode switch 85, and an ECU (Electronic Control Unit) 90. Prepare. Vehicle 1 according to the present embodiment is configured to be capable of AC charging in which battery 10 is charged using AC power supplied from AC charging facility 210 outside the vehicle.

The battery 10 is mounted on the vehicle 1 as a drive power source (that is, power source). Battery 10 includes a plurality of stacked cells. The battery is, for example, a secondary battery such as a nickel-metal hydride battery or a lithium-ion battery. Further, the battery may be a battery having a liquid electrolyte between the positive electrode and the negative electrode, or a battery having a solid electrolyte (all-solid battery).

SMR 20 is provided on power lines PL and NL connecting battery 10 and PCU 30 . The SMR 20 switches between a closed state and an open state according to control signals from the ECU 90 .

PCU 30 converts the DC power stored in battery 10 into AC power and supplies the AC power to motor generator 40 in accordance with a control signal from ECU 90 . PCU 30 also converts AC power generated by motor generator 40 into DC power and supplies the DC power to battery 10 . PCU 30 includes, for example, an inverter and a converter that boosts the DC voltage supplied to the inverter to the output voltage of battery 10 or higher.

Motor generator 40 is an AC rotary electric machine, such as a permanent magnet type synchronous motor having a rotor in which permanent magnets are embedded. The rotor of motor generator 40 is mechanically connected to drive wheels 55 via power transmission gear 50 . Motor generator 40 generates kinetic energy for running vehicle 1 by receiving AC power from PCU 30 . Kinetic energy generated by motor generator 40 is transmitted to power transmission gear 50 . On the other hand, when the vehicle 1 is decelerated or stopped, the motor generator 40 converts the kinetic energy of the vehicle 1 into electrical energy. AC power generated by motor generator 40 is converted into DC power by PCU 30 and supplied to battery 10 . Thereby, the regenerated electric power can be stored in the battery 10 . In this way, motor generator 40 is configured to generate driving force or braking force for vehicle 1 in conjunction with transfer of electric power to and from battery 10 (that is, charging and discharging of battery 10).

Inlet 60 is configured to be connectable with charging connector 230 provided at the tip of charging cable 220 of AC charging facility 210 . Charging connector 230 is connected to inlet 60 when performing AC charging.

AC charging facility 210 is connected to AC power supply 240 and supplies AC power from AC power supply 240 to inlet 60 via charging cable 220 .

Bidirectional charger 70 is configured to receive AC power from inlet 60 to charge battery 10 . Specifically, bidirectional charger 70 converts AC power supplied from inlet 60 into charging power for battery 10 based on a control signal from ECU 90 . Bidirectional charger 70 is configured to convert power bidirectionally, converts power received from battery 10 into AC power, and supplies the AC power to outlet 80 .

Bidirectional charger 70 includes a power conversion device 71 , a first relay 72 , a second relay 73 and a voltage sensor 74 .

Power conversion device 71 is electrically connected between battery 10 and inlet 60 . The power conversion device 71 includes, for example, an AC/DC converter, a DC/AC converter, an isolation transformer, etc., although none of them are shown. Power conversion device 71 converts AC power received from inlet 60 into charging power for battery 10 based on a control signal from ECU 90 . Power conversion device 71 also converts the power stored in battery 10 into power (for example, AC 100 V) for supplying power to outlet 80 , and outputs the converted power to outlet 80 .

The first relay 72 is provided on power lines CPL1 and CNL1 that connect the power conversion device 71 and the inlet 60 . The first relay 72 switches between a closed state and an open state according to a control signal from the ECU 90 . The first relay 72 is closed when performing AC charging.

Second relays 73 are provided on power lines CPL2 and CNL2 that electrically connect power lines CPL1 and CNL1 and outlet 80 . One ends of power lines CPL2 and CNL2 are electrically connected to power lines CPL1 and CNL1 between power converter 71 and first relay 72 . The other ends of power lines CPL2 and CNL2 are electrically connected to outlet 80 . The second relay 73 switches between a closed state and an open state according to a control signal from the ECU 90 . The second relay 73 is closed when an operation for using the outlet 80 is performed, for example, when the my room mode switch 85 is turned on.

Voltage sensor 74 detects voltage V1 between power lines CPL1 and CNL1 between power converter 71 and first relay 72 . During AC charging, voltage sensor 74 detects voltage V1 of AC power supplied from inlet 60 to power lines CPL1 and CNL1. Voltage sensor 74 outputs a signal indicating the detection result to ECU 90 .

My room mode switch 85 is a switch for enabling a my room mode provided in vehicle 1 . The vehicle 1 has a my room mode as one of the control modes for AC charging. My room mode is a mode in which the passenger compartment of the vehicle 1 is used as the user's own room (my room). In the My Room mode, for example, the user can operate an air conditioner, operate an audio device, or connect electrical devices brought by the user to the outlet 80 and use them. The user can, for example, enable the My Room mode and use the passenger compartment as a My Room while charging the battery 10 during AC charging. When my room mode switch 85 is turned on, my room mode switch 85 outputs an ON signal. This ON signal is input to the ECU 90 . Upon receiving the ON signal, the ECU 90 enables the My Room mode. When my room mode switch 85 is turned off, my room mode switch 85 outputs an OFF signal. This OFF signal is input to the ECU 90 . Upon receiving the OFF signal, the ECU 90 disables the My Room mode. Vehicle 1 according to the present embodiment has two my-room modes, a first my-room mode and a second my-room mode. The details will be described later.

The outlet 80 is provided inside the vehicle compartment. In the present embodiment, outlet 80 is an outlet having a rated voltage of AC 100V, and has a shape corresponding to this. For example, if the my room mode is enabled (ON) during AC charging, the second relay 73 is closed and a portion of the AC power from the inlet 60 (AC charging equipment 210) is supplied. is supplied to outlet 80 . If the my room mode is disabled (OFF) during AC charging, the second relay 73 is opened and power is not supplied to the outlet 80 . A user of the vehicle 1 can use the outlet 80 by enabling the My Room mode.

The ECU 90 includes a CPU (Central Processing Unit), memory, and input/output ports (none of which are shown). The memory includes ROM (Read Only Memory) and RAM (Random Access Memory), and stores programs and the like executed by the CPU. The CPU expands the program stored in the ROM into the RAM and executes it. The CPU executes predetermined arithmetic processing based on various signals input from the input/output ports and information stored in the memory, and controls each device based on the arithmetic result so that the vehicle 1 is in a desired state. Control. For example, ECU 90 controls SMR 20 , PCU 30 , power converter 71 , first relay 72 and second relay 73 . It should be noted that these controls are not limited to processing by software, and can be constructed and processed by dedicated hardware (electronic circuits).

Here, in the market, for example, charging equipment that supplies AC 100V power and charging equipment that supplies AC 200V power to the vehicle 1 may coexist. That is, the AC charging facility 210 may include a charging facility that supplies 100V AC power and a charging facility that supplies 200V AC power. The power conversion device 71 can convert the received AC power into charging power for the battery 10 regardless of whether it receives 100V AC power from the inlet 60 or 200V AC power from the inlet 60 .

However, for example, the outlet 80 has a rated voltage. For example, the user can recognize the rated voltage (for example, 100V AC or 200V AC) of the outlet based on the shape of the outlet and/or the notation of the rated voltage and maximum power. If the AC charging facility 210 includes a charging facility that supplies power of AC 100V and a charging facility that supplies power of AC 200V, depending on which AC charging facility 210 the vehicle 1 receives power from, The voltage of the power supplied to the outlet 80 is different. That is, a voltage that does not conform to the shape of the outlet 80 may be supplied to the outlet 80 . As a result, the electrical equipment connected to the outlet 80 may be supplied with a voltage different from the voltage supported by the electrical equipment, causing the electrical equipment to malfunction.

More specifically, outlet 80 according to the present embodiment is an outlet that supplies AC 100V, as described above. When a user connects an electrical device compatible with 100V AC to the outlet 80, and 200V AC is supplied from the inlet 60, the electrical device connected to the outlet 80 breaks down. As a countermeasure against this, for example, it is conceivable to prohibit the use of the outlet 80 during the My Room mode (when it is ON). end up

Therefore, in vehicle 1 according to the present embodiment, when AC charging is started, ECU 90 determines that the voltage of the power supplied from AC charging facility 210 to inlet 60 is 100 V AC, based on the detection value of voltage sensor 74 . It is determined whether there is AC200V. Then, when the ECU 90 determines that AC 100 V power is being supplied from the AC charging facility 210 to the inlet 60 , the second relay is closed to enable the outlet 80 to be used. On the other hand, when the ECU 90 determines that AC 200V power is being supplied from the AC charging facility 210 to the inlet 60 , the second relay is opened to disable the use of the outlet 80 . A specific description will be given below with reference to the flow chart of FIG.

FIG. 2 is a flowchart showing a procedure of processing executed when an operation for starting AC charging (hereinafter also referred to as "charging start operation") is performed. The charging start operation may be, for example, an operation on a start button provided on AC charging equipment 210, or an operation on a start button displayed on an HMI (Human Machine Interface) device of vehicle 1 ( (neither shown). The processing shown in the flowchart of FIG. 2 is executed by the ECU 90 that detects that the charge start operation has been performed when the charge start operation has been performed. Each step (hereinafter abbreviated as "S") of the flowchart shown in FIG. circuit).

In S1, the ECU 90 executes an information exchange process to mutually exchange predetermined information including information on the power that can be supplied by the AC charging facility 210 and information on the power that can be received by the battery 10 with the AC charging facility 210. After that, the first relay 72 is closed to start AC charging. Thereby, power is supplied from the AC charging equipment 210 to the inlet 60 . The power supplied to the inlet 60 is supplied from the inlet 60 to the power conversion device 71 via the power lines CPL1 and CNL1.

In S2, the ECU 90 determines whether or not the My Room Mode is enabled (set to ON). If the My Room Mode is set to ON, there is a possibility that the outlet 80 will be used during AC charging. If the My Room Mode is set to OFF, there is no possibility that the outlet 80 will be used during AC charging. When determining that the my room mode is set to OFF (NO in S2), the ECU 90 advances the process to S3. When determining that the my room mode is set to ON (YES in S2), the ECU 90 advances the process to S5.

In S3, the ECU 90 sets the control mode for AC charging to the charging mode, and continues AC charging. The charging mode is a mode in which AC charging is performed without permitting the use of the passenger compartment as a personal room. In charging in S3, my room mode is disabled and outlet 80 is not used. Therefore, there is no problem that the equipment connected to the outlet 80 is broken down. By not permitting the use of the passenger compartment as a private room, the efficiency of AC charging can be improved compared to the case of permitting the use of the passenger compartment as a private room.

In S<b>5 , ECU 90 determines whether 100 V AC power is being supplied from inlet 60 (that is, AC charging equipment 210 ) based on the value detected by voltage sensor 74 . When determining that 100 VAC power is being supplied from inlet 60 (YES in S5), ECU 90 advances the process to S7. On the other hand, when determining that 200 VAC power is being supplied from inlet 60 (NO in S5), ECU 90 advances the process to S13.

In S7, the ECU 90 determines that the outlet 80 can be used. This is because, when the second relay 73 is closed, the outlet 80 is supplied with AC 100V power that conforms to the rated voltage of the outlet 80 . Then, the ECU 90 advances the process to S9.

In S9, the ECU 90 sets the control mode for AC charging to the first my-room mode and continues AC charging. In this case, the ECU 90 closes the second relay 73 . The first my room mode is a mode that permits the use of all my room functions including the use of the outlet 80 . In the AC charging in S9, even if an electrical device is connected to the outlet 80, the power of AC 100V is supplied to the outlet 80, so that the electrical device can be prevented from malfunctioning.

In S13, the ECU 90 determines that the outlet 80 cannot be used. This is because, when the second relay 73 is closed, the outlet 80 is supplied with AC 200V power that does not match the rated voltage of the outlet 80 . Then, the ECU 90 advances the process to S15.

In S15, the ECU 90 sets the control mode for AC charging to the second my-room mode, and continues AC charging. In this case, the ECU 90 opens the second relay 73 . The second my room mode is a mode that permits the use of all my room functions except for the use of the outlet 80 . That is, in the second my-room mode, usage of the outlet 80 is restricted as compared to the first my-room mode. As a result, even if the user connects the electrical device to the outlet 80, since power is not supplied to the outlet 80, power with a voltage different from the rated voltage of the electrical device is supplied, and failure is suppressed. be.

In S19, the ECU 90 determines whether or not a termination condition for determining termination of AC charging is satisfied. The end condition is, for example, a condition that a preset AC charging end time has arrived, a condition that the SOC of battery 10 has reached a preset SOC, and/or battery 10 has reached a fully charged state. including the condition If the termination condition is not satisfied (NO in S19), the ECU 90 continues AC charging. If the termination condition is satisfied (YES in S19), the ECU 90 terminates the process.

As described above, vehicle 1 according to the present embodiment includes the charging mode, the first my-room mode, and the second my-room mode as control modes related to AC charging. When starting AC charging, the ECU 90 of the vehicle 1 determines whether or not the my room mode is valid. When the my room mode is disabled, the ECU 90 sets the control mode to the charging mode to perform AC charging. Thereby, the efficiency of AC charging can be improved.

When the my room mode is valid and the power of AC 100 V is being supplied from the inlet 60, the ECU 90 sets the control mode to the first my room mode to perform AC charging. As a result, while charging the battery 10, all my room functions including the use of the outlet 80 can be used.

When the my room mode is valid and 200 V AC power is being supplied from the inlet 60, the ECU 90 sets the control mode to the first my room mode to perform AC charging. As a result, while the battery 10 is being charged, the My Room function excluding the use of the outlet 80 can be used.

In this manner, the control mode for AC charging is selected according to the status of AC charging without uniformly prohibiting the use of outlet 80 during AC charging. As a result, even if the use of the outlet 80 is permitted, the outlet 80 can be used when it is determined that the electrical equipment connected to the outlet 80 will not break down due to the supplied power. . Therefore, the user's convenience can be improved regarding the use of the outlet 80 during AC charging.

The embodiments disclosed this time should be considered as examples and not restrictive in all respects. The scope of the present disclosure is indicated by the scope of claims rather than the description of the above-described embodiments, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

1 vehicle, 10 battery, 20 SMR, 30 PCU, 40 motor generator, 50 power transmission gear, 55 driving wheel, 60 inlet, 70 two-way charger, 71 power converter, 72 first relay, 73 second relay, 74 Voltage sensor, 80 Outlet, 85 My room mode switch, 90 ECU, 210 AC charging equipment, 220 Charging cable, 230 Charging connector, 240 AC power supply, CNL1, CNL2, CPL1, CPL2, NL, PL Power line.

Claims (1)

A vehicle configured to be capable of external charging by receiving electric power from a power source external to the vehicle and charging an on-vehicle battery,
an inlet for receiving AC power supplied from the power supply;
a voltage sensor that detects the voltage of the AC power;
a power conversion device configured to convert the AC power into charging power of the battery to charge the battery;
a power line electrically connecting the inlet and the power conversion device;
an outlet for outputting AC power of a predetermined rated voltage supplied from the power line;
Provided between the power line and the outlet, and configured to be switchable between a first state in which the power line and the outlet are electrically connected and a second state in which the power line and the outlet are electrically disconnected. and
A control device that controls the relay,
When the external charging is performed, the control device controls the relay to the first state when the detected voltage of the voltage sensor is a value corresponding to the predetermined rated voltage, and the detected voltage is and controlling the relay to the second state if the value does not correspond to the predetermined rated voltage.

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