JP4114666B2 - Automatic stop control device for hybrid vehicle - Google Patents

Description

  The present invention relates to an automatic stop control device for a hybrid vehicle that includes a hybrid system and that employs an electronic key system that allows the vehicle to start based on wireless communication between the electronic key and the vehicle.

  A hybrid vehicle including an engine and a traveling motor is known. There is also known an electronic key system (also referred to as a smart key system) in which starting of a vehicle (ignition ON) is permitted based on wireless communication between the electronic key and the vehicle. In this electronic key system, if the driver carries the electronic key, the driver can start the vehicle by operating an ignition switch provided in the vehicle without inserting the ignition key into the key cylinder.

  In Patent Document 1, in a vehicle equipped with an electronic key system, the shift position is set to the P range, the side brake is applied, the seat belt is removed, and the driver gets off the vehicle. An engine that automatically stops the engine when at least one of them is established is disclosed.

JP 2003-269305 A JP 2003-120094 A JP 2000-104585 A JP-A-9-88656

  In a normal engine vehicle such as a gasoline vehicle or a diesel vehicle, the engine is always rotating in a vehicle travelable state (that is, a vehicle activated state). For this reason, in an engine vehicle, it can be discriminate | determined by an engine sound whether it is a vehicle starting state.

  On the other hand, in the hybrid vehicle, the engine does not always rotate even in the vehicle activated state, and operates intermittently according to the battery charging state or the vehicle traveling state. For this reason, the driver cannot determine whether or not the vehicle is in the activated state based on the engine sound. When the engine is stopped in the activated state of the vehicle, the driver is in a state where the vehicle cannot travel (ie, the vehicle is stopped). There is a possibility of misunderstanding.

  By the way, in a normal mechanical key system, since the start of the vehicle is permitted by inserting the mechanical key into the key cylinder, the driver inserts the key when starting the vehicle and removes the key when the vehicle stops. For this reason, in a hybrid vehicle employing a mechanical key system, even if the driver misunderstands that the vehicle is in a stopped state, the vehicle stops when the key is removed (ignition OFF). It is unlikely that the vehicle will be left in the state.

  On the other hand, in the electronic key system, the start of the vehicle is permitted based on the wireless communication between the electronic key and the vehicle, so that an operation of inserting a key at the time of starting the vehicle or an operation of removing the key at the time of stopping the vehicle is unnecessary. . For this reason, in a hybrid vehicle employing an electronic key system, if the driver misunderstands that the vehicle is in a stopped state, the driver will get off while carrying the electronic key in a pocket or the like. There is a high possibility that the vehicle will be left unattended.

  When the hybrid vehicle is left in the vehicle activated state, a high-voltage system such as a motor drive circuit is operating even if the engine is stopped, and power is consumed. In addition, if the charge amount of the traveling battery decreases after being left, the engine starts and enters an idling state, and fuel is consumed.

  Therefore, the present invention provides an automatic stop control device for a hybrid vehicle that can reduce the consumption of electric power and fuel when the hybrid vehicle is left in the activated state.

  An automatic stop control device for a hybrid vehicle according to the present invention includes an engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls energization of the travel motor, An automatic stop control device for a hybrid vehicle that includes a hybrid system in which the engine intermittently operates and an electronic key system that permits the start of the vehicle based on wireless communication between the electronic key and the vehicle. Parking intention detection means for detecting the driver's intention to park based on the driver's operation or the state of the vehicle, electronic key detection means for detecting the presence or absence of an electronic key in the passenger compartment, and the parking intention detection means in the vehicle activated state When the intention to park is detected and the absence of an electronic key is detected by the electronic key detection means, the engine is With disabling state, and having a a stop control means for interrupting the supply of power from the traction battery to the motor drive circuit.

  An automatic stop control device for a hybrid vehicle according to the present invention includes an engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls energization of the travel motor. An automatic stop control device for a hybrid vehicle that includes a hybrid system in which an engine intermittently operates in an activated state and that employs an electronic key system that permits vehicle activation based on wireless communication between the electronic key and the vehicle. A driver detecting means for detecting the presence or absence of the driver, an electronic key detecting means for detecting the presence or absence of an electronic key in the passenger compartment, and the absence of the driver is detected by the driver detecting means when the vehicle is activated, and the electronic When the key detection means detects the absence of the electronic key, the engine is disabled and the traveling bag is And having a stop control means for interrupting the power supply to the motor drive circuit from Li, a.

  An automatic stop control device for a hybrid vehicle according to the present invention includes an engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls energization of the travel motor. An automatic stop control device for a hybrid vehicle that includes a hybrid system in which an engine intermittently operates in an activated state and that employs an electronic key system that permits vehicle activation based on wireless communication between the electronic key and the vehicle. , A parking intention detection means for detecting the driver's intention to park based on the driver's operation or the state of the vehicle, a driver detection means for detecting the presence or absence of the driver, and an electronic for detecting the presence or absence of an electronic key in the passenger compartment In the vehicle detection state with the key detection means, the intention to park is detected by the parking intention detection means, and is operated by the driver detection means. A stop control means for disabling the engine and shutting off the power supply from the running battery to the motor drive circuit when the absence of the person is detected and the absence of the electronic key is detected by the electronic key detection means; It is characterized by having.

  In a preferred aspect of the present invention, the stop control means disables the engine, cuts off the power supply from the traveling battery to the motor drive circuit, and cuts off the power supply from the auxiliary battery to the accessory device.

  In a preferred aspect of the present invention, the engine control unit further includes an engine state detection unit that detects the rotation state of the engine, and the stop control unit is configured to stop the engine based on the detection result of the engine state detection unit. Then, a process of making the engine inoperable and a process of cutting off the power supply are executed.

  A hybrid vehicle according to the present invention includes any one of the above automatic stop control devices.

  ADVANTAGE OF THE INVENTION According to this invention, the automatic stop control apparatus of the hybrid vehicle which can reduce consumption of electric power and fuel when a hybrid vehicle is left in the vehicle starting state can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a hybrid vehicle 1 including an automatic stop control device 40 according to the present embodiment. In FIG. 1, the hybrid vehicle 1 has a hybrid system 10 including an engine 11 and a traveling motor 12. The hybrid system 10 will be described. A motor drive circuit 13 composed of an inverter, a boost converter and the like is connected to the traveling motor 12. The motor drive circuit 13 receives power from a high-voltage travel battery 14, also called a main battery, and controls energization of the travel motor 12. Between the motor drive circuit 13 and the traveling battery 14, a relay 15 that connects or disconnects both is inserted. Further, the hybrid system 10 is provided with a hybrid ECU 16 that controls the entire system. The hybrid ECU 16 controls the engine 11 including starting and stopping of the engine 11, controlling the traveling motor 12 by controlling the motor drive circuit 13, managing the charging state of the traveling battery 14, and connecting and disconnecting the relay 15. Etc. Here, the hybrid ECU 16 is an electronic control device including a CPU, a ROM, a RAM, and the like, and various functions thereof are realized by a program stored in a storage medium such as a ROM being executed by the CPU. . The same applies to other ECUs 35 and 41 described later.

  In the hybrid system 10 described above, the engine 11 may be used for charging the traveling battery 14, may be used for driving wheels (not shown), or may be used for both of them. . That is, the hybrid system 10 may be any of a series hybrid system, a parallel hybrid system, and a series / parallel hybrid system.

  In FIG. 1, the hybrid vehicle 1 includes an accessory device 21 that is an electrical component such as audio, and a low-voltage auxiliary battery 22 that supplies power to the accessory device 21. An accessory switch 23 for turning on / off the power supply from the auxiliary battery 22 to the accessory device 21 is interposed between the accessory device 21 and the auxiliary device battery 22.

  Furthermore, the hybrid vehicle 1 employs an electronic key system 30 that is also called a smart key system. The electronic key system 30 is allowed to start a vehicle based on wireless communication between a portable electronic key 31, also called a smart key, and the vehicle. The electronic key system 30 will be described. A transmitter 32, a receiver 33, and an ignition switch 34 are installed in the passenger compartment of the hybrid vehicle 1, and these are electrically connected to the electronic key ECU 35. The electronic key ECU 35 controls the entire electronic key system 30 and switches the ignition state of the hybrid vehicle 1.

  The transmitter 32 transmits a question signal at predetermined intervals based on a control signal from the electronic key ECU 35. When the electronic key 31 receives the interrogation signal from the transmitter 32, it transmits an ID code registered in advance in the internal memory. The receiver 33 receives the ID code transmitted from the electronic key 31 and outputs it to the electronic key ECU 35. The electronic key ECU 35 collates the ID code received from the receiver 33 with the ID code registered in the electronic key ECU 35 in advance.

  The ignition switch 34 is an operation unit for switching the ignition state of the hybrid vehicle 1, and is a push button type switch here. The electronic key ECU 35 changes the ignition state of the hybrid vehicle 1 between an ignition OFF state (vehicle stop state), an accessory (ACC) state, and an ignition ON state (vehicle start state) in response to a pressing operation on the ignition switch 34. Switch. At this time, at least switching from the ignition OFF to the ignition ON is a condition that the ID code has been successfully verified.

  Here, each ignition state will be described. In the ignition OFF state, the relay 15 is in a cut-off state, and the hybrid ECU 16 is in a stopped state. Therefore, the hybrid system 10 is in a stopped state, and the hybrid vehicle 1 is in a state where it cannot travel. Further, the accessory switch 23 is in an OFF state, and the accessory device 21 is in an unusable state.

  In the ACC state, the relay 15 is in a cut-off state, and the hybrid ECU 16 is in a stopped state. Therefore, the hybrid system 10 is in a stopped state, and the hybrid vehicle 1 is in a state where it cannot travel. On the other hand, the accessory switch 23 is in an ON state, and the accessory device 21 is in a usable state.

  In the ignition ON state, the relay 15 is in a connected state, and the hybrid ECU 16 is in an activated state. Therefore, the hybrid system 10 is in an activated state, and the hybrid vehicle 1 is in a travelable state. The accessory switch 23 is in an ON state, and the accessory device 21 is in a usable state. In this ignition ON state, the hybrid ECU 16 automatically starts / stops the engine 11 according to the traveling state of the vehicle and the charging state of the traveling battery 14. That is, the engine 11 operates intermittently in the ignition ON state.

  Next, the transition of the ignition state of the hybrid vehicle 1 will be described along the operation of the driver. Note that what is described below is an example, and the order of changing the ignition state and the operation method for switching the ignition state can be set as appropriate.

  When the driver carries the electronic key 31 and gets into the driver's seat, the electronic key ECU 35 performs wireless communication with the electronic key 31 via the transmitter 32 and the receiver 33 and collates the ID code. When the electronic key ECU 35 succeeds in collating the ID code, the electronic key ECU 35 enters an activation permission state in which the activation of the vehicle is permitted. In this activation permission state, when the driver depresses the ignition switch 34 while depressing a brake pedal (not shown), the electronic key ECU 35 turns on the accessory switch 23 and then activates the hybrid ECU 16. When the hybrid ECU 16 is activated, the hybrid ECU 16 checks whether the engine 11, the traveling motor 12, the motor drive circuit 13, the traveling battery 14 and the like can operate normally, and then connects the relay 15. Thereby, the ignition state is switched from ignition OFF to ignition ON via ACC. If the electronic key 31 is not present in the passenger compartment or if the ID code verification is not successful, such as when the ID code verification fails, the vehicle is not allowed to start.

  In the ignition ON state, when the driver completely stops the vehicle and sets the vehicle speed to zero and then presses the ignition switch 34, the electronic key ECU 35 instructs the hybrid ECU 16 to shut down the hybrid system 10. When receiving this instruction, the hybrid ECU 16 stops itself after the relay 15 is cut off. Next, the electronic key ECU 35 turns off the accessory switch 23. Thereby, the ignition state is switched from ignition ON to ignition OFF through ACC.

  On the other hand, when the driver continues to press the ignition switch 34 for a predetermined time or longer (for example, 3 seconds or longer) in the ignition ON state, the electronic key ECU 35 shuts down the hybrid system 10 without turning off the accessory switch 23. Thereby, the ignition state is switched from ignition ON to ACC.

  When the driver depresses the ignition switch 34 in the ACC state, the electronic key ECU 35 turns off the accessory switch 23. Thereby, the ignition state is switched from ACC to ignition OFF.

  In the hybrid vehicle 1 having the above-described configuration, as described above, the driver who misunderstood that the ignition has already been turned off despite having been in the ignition ON state, leaves the vehicle with the electronic key 31 and leaves the vehicle as it is. There is a possibility that. When the hybrid vehicle 1 is left in the ignition ON state, the high voltage system such as the motor drive circuit 13 is operating even when the engine 11 is stopped, and the power of the traveling battery 14 is consumed. Further, if the charge amount of the traveling battery 14 decreases after being left unattended, the engine 11 is started and enters an idling state, and fuel is consumed.

  Therefore, in the present embodiment, an automatic stop control device 40 is provided to reduce power and fuel consumption when the hybrid vehicle 1 is left in the ignition ON state due to a driver's misunderstanding. The automatic stop control device 40 disables the engine 11 when the driver's intention to park, the absence of the driver, and the absence of an electronic key in the passenger compartment are detected. The power supply from 14 to the motor drive circuit 13 is cut off.

  In FIG. 1, the automatic stop control device 40 is configured around an automatic stop control ECU 41. The automatic stop control ECU 41 realizes the function of the automatic stop control device 40 in cooperation with various sensors connected thereto. Specifically, the following are connected to the automatic stop control ECU 41 as various sensors. That is, in order to detect the rotation state of the engine 11, an engine rotation speed sensor 42 that detects the rotation speed of the engine 11 is connected. An electronic key ECU 35 is connected to detect the ignition state. In order to detect the driver's intention to park, a shift range sensor 43 that detects the shift range, a vehicle speed sensor 44 that detects the vehicle speed, and a parking brake sensor 45 that detects the state of the parking brake are connected. In order to detect the presence or absence of an occupant (driver) in the driver's seat (D seat), a sensor that detects the presence / absence of seating by detecting the pressure on the seat surface of the D seat, a sensor that detects the opening / closing of the door, or the driver's seat A D-seat occupant sensor 46 such as a camera for photographing the camera is connected. An electronic key ECU 35 is connected to detect the presence or absence of the electronic key 31 in the passenger compartment. Then, the automatic stop control ECU 41 controls the hybrid ECU 16 and the accessory switch 23 based on the output signals of these various sensors, thereby making the engine 11 inoperable, the driving battery 14 to the motor drive circuit 13. The process which interrupts | blocks the electric power supply to and the process which interrupts | blocks the electric power supply from the auxiliary battery 22 to the accessory apparatus 21 is performed.

  FIG. 2 is a flowchart showing an operation procedure of the automatic stop control ECU 41. Hereinafter, the operation of the automatic stop control ECU 41 (hereinafter referred to as ECU 41) will be described with reference to FIG.

  First, the ECU 41 determines whether or not the engine 11 is stopped based on the output signal (Ne signal) of the engine speed sensor 42 (S1).

  If it is determined in step S1 that the engine 11 is not stopped, that is, if the engine 11 is rotating, the ECU 41 ends the process without turning off the ignition. This is because, while the engine 11 is rotating, the driver can recognize that the ignition is in an ON state (the vehicle can travel), and the possibility of leaving the vehicle due to misunderstanding is low. On the other hand, when it is determined that the engine 11 is stopped, the ECU 41 inquires of the electronic key ECU 35 about the ignition state, for example, and determines the ignition state (S2).

  If it is determined in step S2 that the state is the ACC state, the process proceeds to step S6. This is because it is necessary to continue the process in order to prevent the auxiliary battery from running out. Moreover, it is because driving | running | working is impossible in an ACC state, and determination of the driver | operator's parking intention performed by step S3-S5 mentioned later is unnecessary. On the other hand, when it is determined that the ignition is on, the ECU 41 determines whether or not the driver intends to park based on the operation of the driver or the state of the vehicle (S3 to S5). Specifically, first, the ECU 41 determines whether or not the shift range is the P range based on the output signal of the shift range sensor 43 (S3).

  If it is determined in step S3 that the vehicle is in the P range, it is assumed that the driver has an intention to park, and the process proceeds to step S6. On the other hand, when it is determined that the vehicle is not in the P range, the ECU 41 further determines whether or not the vehicle speed is zero based on the output signal of the vehicle speed sensor 44 (S4).

  If it is determined in step S4 that the vehicle speed is not zero, it is assumed that there is no intention to park, so the ECU 41 ends the process. On the other hand, when it is determined that the vehicle speed is zero, the ECU 41 further determines whether or not the parking brake is ON based on the output signal of the parking brake sensor 45 (S5).

  If it is determined in step S5 that the parking brake is OFF, it is assumed that there is no intention to park, so the ECU 41 ends the process. On the other hand, if it is determined that the parking brake is ON, that is, if the vehicle speed is zero and the parking brake is ON, it is assumed that the driver has the intention to park, and the process proceeds to step S6. .

  In step S <b> 6, the ECU 41 determines the presence or absence of an occupant (driver) in the driver's seat based on the output signal of the D seat occupant sensor 46.

  If it is determined in step S6 that the driver is present, the vehicle is not left unattended and automatic ignition OFF is not required, so the ECU 41 ends the process. On the other hand, when it is determined that the driver is absent, the ECU 41 determines the presence or absence of the electronic key 31 in the vehicle interior by inquiring of the electronic key ECU 35 or by controlling the electronic key ECU 35 (S7).

  If it is determined in step S7 that the electronic key 31 is present in the passenger compartment, the driver's intention to “return immediately” is assumed, and the driver is more likely to return to take the electronic key 31, so the ECU 41 Terminates the process. On the other hand, if it is determined that the electronic key 31 is not present in the vehicle interior, the driver misunderstands that the ignition is off and it is assumed that the driver has left the vehicle with the electronic key 31, so the ECU 41 performs an automatic stop process. Execute (S8).

  The automatic stop process in step S8 will be described. When it is determined in step S2 that the ignition is in the ON state, the ECU 41 disables the engine 11 in order to prevent the fuel from being wasted and In order to prevent waste of power, the power supply from the traveling battery 14 to the motor drive circuit 13 is cut off. Furthermore, in order to prevent waste of power from the auxiliary battery 22, power supply from the auxiliary battery 22 to the accessory device 21 is cut off. Specifically, the ECU 41 instructs the hybrid ECU 16 to shut down the hybrid system 10. When receiving this instruction, the hybrid ECU 16 stops itself after the relay 15 is cut off. Further, the ECU 41 turns off the accessory switch 23. That is, the ECU 41 automatically changes the ignition state of the hybrid vehicle 1 from ignition ON to ignition OFF when the driver's intention to park, the absence of the driver, and the absence of an electronic key in the passenger compartment are detected in the ignition ON state. Switch to.

  When it is determined in step S2 that the state is the ACC state, the ECU 41 cuts off the power supply from the auxiliary battery 22 to the accessory device 21 in order to prevent waste of the electric power of the auxiliary battery 22. Specifically, the ECU 41 turns off the accessory switch 23. In other words, the ECU 41 automatically switches the ignition state of the hybrid vehicle 1 from ACC to ignition OFF when it is detected in the ACC state that the driver is absent and the electronic key is not present in the passenger compartment.

  Furthermore, in the present embodiment, the ECU 41 performs the automatic stop process described above and controls the door lock mechanism (not shown) to prevent the vehicle theft, thereby locking the door of the hybrid vehicle 1 (S9). ).

  As described above, in the present embodiment, the engine 11 cannot be operated when the driver's intention to park, the absence of the driver, and the absence of an electronic key in the passenger compartment are detected in the ignition ON state (vehicle activation state). At the same time, the power supply from the traveling battery 14 to the motor drive circuit 13 is cut off. For this reason, according to the present embodiment, it is properly detected that the driver has misunderstood that the vehicle is in a stopped state, but has gone out of the vehicle with an electronic key, even though the vehicle is in a starting state. It is possible to prevent or reduce power and fuel consumption when the vehicle is left in the activated state due to a driver's misunderstanding. Note that it is not preferable to stop the hybrid system 10 simply because the absence of the electronic key is detected. This may be due to the fact that no electronic key was detected (no signal from the electronic key) because the electronic key was taken out of the vehicle (getting off the driver), or the electronic key was damaged or the battery was exhausted. This is because I don't know why. Moreover, it is not preferable to stop the hybrid system 10 when the electronic key 31 exists in the vehicle interior. This is because, in general, when the vehicle is parked, the driver goes out of the vehicle with the electronic key 31, so that the possibility of misunderstanding is low.

  Further, when the vehicle is left in the activated state due to misunderstanding, when the charge amount of the traveling battery 14 decreases, the engine 11 is activated and enters an idling state, and wasteful exhaust gas and heat are generated, resulting in environmental degradation. In the present embodiment, the engine 11 is made inoperable by detecting the above-mentioned neglect, so that it is possible to avoid the generation of exhaust gas and heat, and further deterioration of the environment.

  Further, if the vehicle is left in the activated state due to misunderstanding, the vehicle may be inadvertently operated, which is dangerous. In the present embodiment, since the above neglected state is detected and the vehicle cannot travel, danger due to careless operation can be avoided.

  In addition, if the vehicle is left in the activated state due to a misunderstanding, it is left in a high-pressure input state, which poses a danger to those who attempt to disassemble or maintain the vehicle. In the present embodiment, since the above-mentioned neglect is detected and the high-voltage power supply is shut off, danger due to disassembly and maintenance can be avoided.

  Further, when the vehicle is left in the vehicle starting state, since the accessory switch 23 is in the ON state, the power of the auxiliary battery 22 is wasted and the auxiliary battery is exhausted. In the present embodiment, since the above-mentioned neglect is detected and the auxiliary battery 22 and the accessory device 21 are cut off, the power consumption of the auxiliary battery 22 can be prevented and the auxiliary battery can be prevented from rising. it can.

  Further, when the vehicle is left in the vehicle activated state, the vehicle is in a travelable state, so that there is a possibility that someone will get on as it is. That is, the vehicle may be stolen. In the present embodiment, the door is locked by detecting the neglect, so that the vehicle can be prevented from being stolen.

  Further, in the present embodiment, in the ACC state, when the absence of the driver and the absence of the electronic key in the passenger compartment are detected, the power supply from the auxiliary battery 22 to the accessory device 21 is cut off. For this reason, according to the present embodiment, “the driver misunderstood that the vehicle was in the ignition OFF state (vehicle stopped state in spite of being in the ACC state) and went out of the vehicle with the electronic key.” It is possible to detect appropriately, and it is possible to prevent or reduce power consumption of the auxiliary battery 22 when the vehicle is left in the ACC state due to misunderstanding of the driver.

  Further, in the present embodiment, when the state of the engine 11 is detected and the engine 11 is stopped, a process for making the engine 11 inoperable, a process for cutting off the power supply by the traveling battery 14, and a supplement When the power supply by the machine battery 22 is cut off and the engine 11 is rotating, these processes are not executed. For this reason, according to the present embodiment, it is possible to prevent the automatic stop process from being executed in a dark manner even when the possibility of misunderstanding by the driver is low. In addition, when the engine 11 is rotating, the processing load can be reduced by not performing the determination processing from step S2 to step S7.

  In addition, this invention is not limited to the said embodiment, It can change variously within the range which does not deviate from the summary of this invention.

  For example, the condition under which the automatic stop process is executed is preferably “in the vehicle activation state, the driver's intention to park, the absence of the driver, and the absence of an electronic key in the passenger compartment are detected” In the vehicle activation state, the driver's intention to park and the absence of an electronic key in the passenger compartment are detected "or" In the vehicle activation state, the absence of the driver and the absence of an electronic key in the passenger compartment are detected " There may be. This is because even in these cases, there is a high possibility that the driver has misunderstood that the vehicle is in a stopped state, but has gone out of the vehicle with an electronic key, even though the vehicle is in an activated state. It is.

  In addition, the detection of the engine state, the detection of the ignition state, the detection of the intention to park, the detection of the presence / absence of the driver, and the detection of the presence / absence of the electronic key are not limited to the method of the above embodiment, and can be realized by an appropriate method. is there. For example, for the detection of parking intention, the shift range is set to the P range, the vehicle speed is zero, the parking brake is ON, the seat belt is removed, the air conditioner switch is turned OFF, Alternatively, when the arrival at the destination is detected in the car navigation system, or when an appropriate combination thereof is established, it can be determined that there is an intention to park.

It is a block diagram which shows the structure of the hybrid vehicle containing the automatic stop control apparatus which concerns on embodiment. It is a flowchart which shows the operation | movement procedure of automatic stop control ECU.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Hybrid vehicle, 10 Hybrid system, 11 Engine, 12 Running motor, 13 Motor drive circuit, 14 Running battery, 15 Relay, 16 Hybrid ECU, 21 Accessory equipment, 22 Auxiliary battery, 23 Accessory switch, 30 Electronic key system , 31 Electronic key, 32 Transmitter, 33 Receiver, 34 Ignition switch, 35 Electronic key ECU, 40 Automatic stop control device, 41 Automatic stop control ECU, 42 Engine speed sensor, 43 Shift range sensor, 44 Vehicle speed sensor, 45 Parking brake sensor, 46D seat occupant sensor.

Claims (6)

An engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls the energization of the travel motor, and includes a hybrid system in which the engine intermittently operates in a vehicle start-up state. An automatic stop control device for a hybrid vehicle that employs an electronic key system that allows the vehicle to start based on wireless communication between the key and the vehicle,
Parking intention detection means for detecting the driver's intention to park based on the operation of the driver or the state of the vehicle;
Electronic key detection means for detecting the presence or absence of an electronic key in the passenger compartment;
When the intention to park is detected by the parking intention detection means and the absence of the electronic key is detected by the electronic key detection means in the vehicle start-up state, the engine is made inoperable and power from the running battery to the motor drive circuit Stop control means for cutting off the supply;
An automatic stop control device for a hybrid vehicle, comprising: An engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls the energization of the travel motor, and includes a hybrid system in which the engine intermittently operates in a vehicle start-up state. An automatic stop control device for a hybrid vehicle that employs an electronic key system that allows the vehicle to start based on wireless communication between the key and the vehicle,
Driver detection means for detecting the presence or absence of the driver;
Electronic key detection means for detecting the presence or absence of an electronic key in the passenger compartment;
When the absence of the driver is detected by the driver detection means and the absence of the electronic key is detected by the electronic key detection means in the vehicle start-up state, the engine is disabled and the travel battery is transferred to the motor drive circuit. Stop control means for cutting off the power supply of
An automatic stop control device for a hybrid vehicle, comprising: An engine, a travel motor, a travel battery, and a motor drive circuit that receives power from the travel battery and controls the energization of the travel motor, and includes a hybrid system in which the engine intermittently operates in a vehicle start-up state. An automatic stop control device for a hybrid vehicle that employs an electronic key system that allows the vehicle to start based on wireless communication between the key and the vehicle,
Parking intention detection means for detecting the driver's intention to park based on the operation of the driver or the state of the vehicle;
Driver detection means for detecting the presence or absence of the driver;
Electronic key detection means for detecting the presence or absence of an electronic key in the passenger compartment;
When the vehicle intention is detected by the parking intention detection means, the absence of the driver is detected by the driver detection means, and the absence of the electronic key is detected by the electronic key detection means, the engine is disabled. And stop control means for cutting off the power supply from the traveling battery to the motor drive circuit;
An automatic stop control device for a hybrid vehicle, comprising: An automatic stop control device for a hybrid vehicle according to any one of claims 1 to 3,
The stop control means disables the engine, cuts off the power supply from the traveling battery to the motor drive circuit, and cuts off the power supply from the auxiliary battery to the accessory device. Stop control device. An automatic stop control device for a hybrid vehicle according to any one of claims 1 to 4,
It further has engine state detection means for detecting the rotation state of the engine,
The stop control means, based on the detection result of the engine state detection means, executes a process for making the engine inoperable and a process for cutting off the power supply when the engine is stopped. Automatic stop control device. A hybrid vehicle comprising the hybrid vehicle automatic stop control device according to any one of claims 1 to 5.

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