JP2008126993A - Power supply control device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a driver from leaving a vehicle while a power supply control device is at an ACC position. <P>SOLUTION: When the vehicle stops and the driver leaves the vehicle, a driver should select a third power supply state C intercepting feeding to a first device group 11 (an ignition control device and the like) which is indispensable to keep driving of the vehicle by a push button switch 16 and second device group 12 (acoustic apparatus and the like) except for that, and leave the vehicle after stopping the power consumption of a battery 13. If the driver leaves the vehicle while a second power supply state B feeding by mistake only to the second device group 12 is selected, a door operation detecting means 17 detects locking of a door at that time. After a lapse of predetermined time (for example, 2 seconds) since the point of time, an electronic control unit 15 actuates an alarm means 30 such as a buzzer, a chime, and a gong for predetermined time (for example, 30 seconds), so that the driver can certainly notice that the second power supply state B is selected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a first power supply state that supplies power to a first device group that is indispensable for maintaining traveling of a vehicle and a second device group other than the first device group, and a first power supply that supplies power only to the second device group. The present invention relates to a power supply control device for a vehicle in which a control means switches between a two power supply state and a third power supply state in which power supply to the first device group and the second device group is cut off according to an operation of a selection means.

  Generally, a rotary switch is used as a key switch of a vehicle, and a power supply state is switched by inserting and rotating a corresponding key. For example, if the key is rotated to the right from the OFF position where the key has been inserted, it switches to the ACC position (accessory position) for supplying power to the audio equipment, etc., and if the key is further rotated to the right, the engine operating state is maintained. When the key is further rotated to the right from there, the starter motor is switched to the ST position (starting position) where the starter motor is operated while the key is held at that position.

  When the key is released after the engine is started, the key automatically returns from the ST position to the ON position, and when the key is rotated counterclockwise, the key is switched to the ACC position and the engine is stopped. When it is rotated to the OFF position, it is possible to switch to the OFF position and remove the key. Accordingly, when the key is removed, the power supply state is always in the OFF position and does not remain in the ACC position.

A power supply control device for a vehicle that switches the power supply state by operating a push button switch without using the above-described conventional key switch is known from Patent Document 1 below. This vehicle power supply control device includes a push button switch that is activated by the operation of a driver carrying an authentication element such as a chip card or a transponder. When the push button switch is pressed from the OFF position, the switch is switched to the ACC position. When the push button switch is pressed from the ACC position, it switches to the ON position. The state where the push button switch is continuously pressed from the ON position is the ST position. When the push button switch is released from the ST position, the switch is switched to the ON position. When the switch is pressed, the position is switched to the ACC position, and when the push button switch is pressed from the ACC position, the position is switched to the OFF position.
JP 2000-85533 A

  However, in the power supply control device for a vehicle provided with the push button switch described in Patent Document 1, the engine is stopped by originally pushing the push button switch from the ON position to the ACC position, and then pressing the push button switch again. When the driver should leave the vehicle after pressing to the OFF position, the driver may leave the vehicle in the ACC position by mistake. In such a case, a warning is given to the driver, but if the driver leaves the vehicle without noticing the warning, the acoustic device etc. is left in an activated state and the battery power is wasted. There was a problem.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to prevent a driver from leaving a vehicle while the power control device of the vehicle remains in the ACC position.

  In order to achieve the above object, according to the first aspect of the present invention, the first device for supplying power to the first device group essential for maintaining the running of the vehicle and the second device group other than the first device group is provided. A power supply state, a second power supply state for supplying power only to the second device group, and a third power supply state for cutting off power supply to the first device group and the second device group, according to the operation of the selection means In the vehicle power supply control device to be switched by the control means, a door operation detecting means for detecting the locking operation of the door of the vehicle, and an alarm means for issuing an alarm to the driver by sound, the control means is controlled by the selecting means. In a state where the second power supply state is selected, the alarm means is activated when a predetermined time has elapsed after the door operation detecting means detects the locking operation of the vehicle door. Power control Location is proposed.

  According to the invention described in claim 2, the first power supply state for supplying power to the first device group essential for maintaining traveling of the vehicle and the second device group other than the first device group, and the second power supply state. In the vehicle, the control means switches between a second power supply state that supplies power only to the device group and a third power supply state that interrupts power supply to the first device group and the second device group according to the operation of the selection means. The power control device includes door operation detection means for detecting an opening operation of the vehicle door, and window opening means for opening the door window, wherein the control means selects the second power state by the selection means. In this state, a vehicle power supply control device is proposed in which the window opening means is actuated when an opening operation of the vehicle door is detected by the door operation detection means.

  The electronic control unit 15 of the embodiment corresponds to the control means of the present invention, and the push button switch 16 of the embodiment corresponds to the selection means of the present invention.

  According to the configuration of claim 1, when the vehicle stops and the driver leaves the vehicle, the third power source state that cuts off the power supply to the first device group and the second device group is selected by the selection unit. If you should leave the vehicle in a state where there is no power consumption, if you accidentally leave the vehicle while selecting the second power supply state that supplies power only to the second group of devices, the door locking operation at that time is the door operation. When the detection means detects and the control means activates the alarm means when a predetermined time elapses from that point, the driver is surely notified that the second power supply state in which power is supplied to the second device group is in effect. Thus, it is possible to prevent the second power supply state from continuing and consuming power wastefully.

  According to the second aspect of the present invention, when the vehicle stops and the driver leaves the vehicle, the third power supply state that cuts off the power supply to the first device group and the second device group is selected by the selection means. If the vehicle should be left in a state where there is no power consumption, and if the vehicle is left while the second power supply state for supplying power only to the second device group is selected by mistake, the door opening operation at that time is When the operation detection means detects, the control means activates the window opening means to open the door window, so that the driver is surely informed that the second power supply state in which power is supplied to the second device group is in effect. Thus, it is possible to prevent the second power supply state from continuing and consuming power wastefully.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 3 show a first embodiment of the present invention. FIG. 1 is a block diagram showing a configuration of a power control device for a vehicle, FIG. 2 is an explanatory diagram of functions of a push button switch, and FIG. It is a time chart explaining the effect | action of the warning with respect to a driver | operator.

  As shown in FIG. 1, the vehicle has a first device group 11 such as an engine ignition control device and an automatic transmission shift control device that are indispensable for maintaining traveling, and an acoustic device, an air conditioner, and a navigation system other than the first device group 11. , And a second device group 12 such as a power window and a power seat. The first and second device groups 11 and 12 are supplied with power from the battery 13 via the switching means 14. The switching means 14 includes a first power supply state A (ON position) in which power is supplied to both the first device group 11 and the second device group 12 simultaneously, and a second power supply state B (in which power is supplied only to the second device group 12. ACC position) and the third power supply state C (OFF position) in which power supply to the first device group 11 and the second device group 12 is cut off can be selected.

  Connected to the electronic control unit 15 are a push button switch 16 operated by a driver, a door operation detecting means 17 for detecting opening / closing of a vehicle door, and a shift position detecting means 18 for detecting a shift position of an automatic transmission. Based on the signals from the push button switch 16, the door operation detection means 17 and the shift position detection means 18, the electronic control unit 15 determines whether the switching means 14, the starter motor 19, the alarm means 20, and the window opening means 21. Control operation. The door operation detection means 17 detects the operation from the closed state of the door to the open state and the locking of the door. The alarm means 20 is composed of sound means such as a buzzer, chime and gong, and is provided so that it can be heard well from outside the vehicle. The window opening means 21 is composed of an existing power window and automatically opens the door window of the driver's seat.

  The alarm means 20 is used in the first embodiment, and the window opening means 21 is used in the second embodiment.

  FIG. 2 shows the function of the push button switch 16 for switching the first power supply state A, the second power supply state B, and the third power supply state C, and cuts off the power supply to the first device group 11 and the second device group 12. When the push button switch 16 is pressed from the third power supply state C (OFF position), it switches to the second power supply state B (ACC position) in which power is supplied only to the second device group 12, and the push button is switched from the second power supply state B. Pressing the switch 16 switches to the first power supply state A (ON position) in which power is supplied to both the first device group 11 and the second device group 12.

  If the push button switch 16 is continuously pressed from the first power supply state A, the starter motor 19 can be operated during that time to start the engine (ST position). When the push button switch 16 is released after the engine is started, it automatically returns to the first power state A, and when the push button switch is pressed from the first power state A, it switches to the second power state B, and the second power state B When the push button switch 16 is pressed, the automatic transmission shifts to the third power state C when the shift position of the automatic transmission is at the parking position, and continues to the second power state B when the shift position is not at the parking position. In this embodiment, when it is determined that the shift position of the automatic transmission is in the parking position and the vehicle is stopped (vehicle speed 0 km / h), the push button switch is turned on from the first power state A. When pressed, the second power supply state B is skipped and the third power supply state C is switched.

  Switching between the first power supply state A, the second power supply state B, and the third power supply state C is performed when the electronic control unit 15 that receives a signal from the push button switch 16 operates the switching means 14. When the starter motor 19 is operated by continuously pressing the push button switch 16 from the first power supply state A, if it is detected that the shift position of the automatic transmission is not in the parking position or the neutral position, the electronic control unit 15 The operation of the starter motor 19 is prohibited.

  When the driver leaves the vehicle, it is necessary to switch to the third power state C by operating the push button switch 16. This is because when the vehicle leaves the vehicle in the second power supply state B in which the second device group 12 can be operated, the battery can be used if the second device group 12 such as an audio device, an air conditioner, or a navigation system remains in the activated state. It is because 13 electric power is consumed wastefully. In order to avoid such a situation, the electronic control unit 15 operates the alarm means 20 to issue an alarm to the driver.

Hereinafter, the operation will be described with reference to the time chart of FIG. 3. First, the operation at normal time indicated by a solid line will be described. When the vehicle is stopped and the shift position is set to the parking position at time t1 and the push button switch 16 is pressed at time t2, the first power supply state A is jumped over the second power supply state B to shift to the third power supply state C. Ignition OFF and accessory OFF state (OFF position). When the driver opens the door at time t3 and gets out of the vehicle, the door is closed at time t4, and when the driver gives a locking instruction with the remote control at time t5, the door is locked at time t6 and the buzzer of the alarm means 20 And the hazard lamp flashing are repeated twice to inform the driver that locking is complete. In this case, since the power supply state is the third power supply state C (OFF position), the second device group 12 such as the audio equipment, the air conditioner, and the navigation system remains in the operating state, and the power of the battery 13 is wasted. There is no fear of doing it.

  Next, the action at the time of abnormality shown with a broken line is demonstrated. When the shift position is supposed to be the parking position at time t1 after the vehicle stops, if the push button switch 16 is pressed at time t2 in the state where the parking position is forgotten, the first power state A to the third power state C Instead, the state shifts to the second power supply state B, and the ignition is turned off and the accessory is turned on (ACC position). When the driver opens the door at time t3, the buzzer of the notification means 20 sounds intermittently until the door closes at time t4 in order to notify the driver that the second power supply state B is currently maintained. To alert the driver. If the driver who notices the alarm sets the shift position to the parking position and operates the push button switch 16 to set the third power supply state C, the same operation as in the normal state described above can be performed thereafter.

  If the driver gives an instruction to lock the alarm at time t5 without noticing the alarm, the door is locked at time t6. Then, when a first predetermined time (for example, 2 seconds) elapses from the completion of locking the door at time t6 and time t7 is reached, the buzzer, chime, gong, etc. of the alarm means 20 are set to the second by a command from the electronic control unit 15. A predetermined time (for example, 30 seconds) is intermittently sounded to alert the driver. This alarm is activated while the door is open, whereas the alarm is activated after the first predetermined time (2 seconds) has elapsed since the door has been locked. It becomes easy to notice the incident. In the unlikely event that the driver is not aware of this alarm, the alarm is stopped when the second predetermined time (30 seconds) elapses, and the battery 13 is wasted due to the alarm means 20 being continuously operated. Consumption can be avoided.

  The driver who notices the alarm returns to the vehicle, opens the door, sets the shift position to the parking position, presses the push button switch 16, and switches from the second power supply state B to the third power supply state C (OFF position). Thus, it is possible to reliably prevent the second device group 12 such as the acoustic device, the air conditioning device, and the navigation system from being left in the operating state and the battery 13 being consumed.

  Next, a second embodiment of the present invention will be described based on the time chart of FIG.

  The normal operation indicated by the solid line is the same as that of the first embodiment described in FIG. In the case of an abnormality indicated by a broken line, after the vehicle stops, the shift position should be set to the parking position at time t1, but if the push button switch 16 is pressed at time t2 in the state where the parking position is forgotten, the first power state A From the third power supply state C to the second power supply state B, and the ignition OFF and accessory ON state (ACC position) is entered. When the driver opens the door at time t3, the buzzer, chime, gong, etc. of the alarm means 20 until the door closes at time t4 in order to notify the driver that the second power supply state B is currently maintained. Will ring intermittently to alert the driver.

  At the time t3, the driver opens the door, and at the same time, the window opening means 21 is actuated by the command from the electronic control unit 15 to open the window of the driver's door. This opening amount is set to 10 cm, for example. As described above, when the driver opens the door from the passenger compartment in the second power supply state B, the driver opens the window even though the driver does not perform the operation of opening the window. It can be recognized that the power source is in the two power supply state B. Thus, if the driver sets the shift position to the parking position and operates the push button switch 16 to set the third power supply state C, the same operation as in the normal state described above can be performed thereafter.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, in the embodiment, the push button switch 16 is exemplified as the selection means of the present invention, but the form of the selection means is not limited to the push button switch 16.

The block diagram which shows the structure of the power supply control device of the vehicle which concerns on 1st Embodiment. Explanatory diagram of push button switch functions Time chart explaining the action of alarms to the driver Time chart explaining action of alarm for driver according to second embodiment

Explanation of symbols

11 First device group 12 Second device group 15 Electronic control unit (control means)
16 Push button switch (selection means)
17 Door operation detection means 20 Alarm means 21 Window opening means A 1st power supply state B 2nd power supply state C 3rd power supply state

Claims (2)

A first power supply state (A) for supplying power to a first device group (11) indispensable for maintaining traveling of the vehicle and a second device group (12) other than the first device group (11); and the second device. A second power supply state (B) for supplying power only to the group (12), and a third power supply state (C) for cutting off power supply to the first device group (11) and the second device group (12). In the vehicle power supply control device, the control means (15) switches according to the operation of the selection means (16).
A door operation detecting means (17) for detecting a locking operation of the door of the vehicle, and an alarm means (20) for emitting an alarm to the driver by sound,
The control means (15) is configured to detect a vehicle door locking operation detected by the door operation detection means (17) in a state where the second power supply state (B) is selected by the selection means (16). A power supply control device for a vehicle, wherein the alarm means (20) is activated when a predetermined time has elapsed. A first power supply state (A) for supplying power to a first device group (11) indispensable for maintaining traveling of the vehicle and a second device group (12) other than the first device group (11); and the second device. A second power supply state (B) for supplying power only to the group (12), and a third power supply state (C) for cutting off power supply to the first device group (11) and the second device group (12). In the vehicle power supply control device, the control means (15) switches according to the operation of the selection means (16).
Door operation detecting means (17) for detecting the opening operation of the door of the vehicle, and window opening means (21) for opening the door window,
The control means (15), when the door operation detection means (17) detects the opening operation of the vehicle door in the state where the second power supply state (B) is selected by the selection means (16). And the window opening means (21) is operated.

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