Controller of vehicle

Abstract

To provide a controller of a vehicle which causes a vehicle to be parked in a movable state and whose battery exhaustion is suppressed.SOLUTION: An electric control device 90 of a vehicle 10 with an automatic P switching function that automatically switches, when a power off operation is performed, a shift lever to a P range and turns off a power source 70 is given. When the automatic P switching function is nullified by a prescribed special operation and when the power off operation is performed, the shift lever is to be in a N range and the power source 70 is turned off without power supply to electrical apparatuses. Thereby, the vehicle 10 is parked in a movable state and battery exhaustion of the power source 70 is suppressed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle control device that has an automatic P switching function that automatically switches to P range and then turns off the power when a power-off operation is performed. [Background technology]

[0002] There is known a vehicle control device equipped with an automatic P switching function that automatically switches to P range and then turns off the power when a power-off operation is performed. For example, the one described in Patent Document 1 is such a device. In Patent Document 1, when the shift lever is operated to set the N range, the shift lever is operated again to hold the N position for a certain period of time, and then the power-off operation is performed, the power is turned off with the automatic P switching function disabled. In this case, the N range is maintained, the power supply to the driving equipment related to the vehicle driving is cut off, and the power is turned off in a state in which some electrical equipment such as the display device can be used, that is, in a state in which the so-called ACC power supply is on. In other words, the power is turned off with power being supplied to the electrical equipment. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-127947 A Summary of the Invention [Problem to be solved by the invention]

[0004] In some countries, in order to make effective use of parking lots, other vehicles are sometimes parallel parked in front of a parked vehicle. In this case, in order to start the parked vehicle, the other vehicles must be moved because they are in the way of the parked vehicle. If the power-off operation is performed with the automatic P switching function of the other vehicles disabled, it is possible to move the other vehicles, but the power supply to the electrical equipment is maintained. Therefore, if the other vehicles are parked for a long period of time, the power stored in the power supply is consumed, which may cause the battery to run out.

[0005] The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a vehicle control device that parks a vehicle in a movable state and suppresses battery discharge. [Means for solving the problem]

[0006] The gist of the present invention is a vehicle control device equipped with an automatic P switching function that automatically switches to P range and then turns off the power when a power-off operation is performed, and when the automatic P switching function is disabled by a predetermined special operation and the power-off operation is performed, the system is put into N range and the power supply is turned off in a state where the power supply to electrical equipment is cut off. Effect of the Invention

[0007] According to the vehicle control device of the present invention, when the power off operation is performed with the automatic P switching function disabled by a predetermined special operation, the N range is set and the power supply is turned off with the power supply to the electrical equipment cut off. As a result, the vehicle is parked in a movable state by setting the vehicle to the N range, and the battery is prevented from running out by turning off the power supply with the power supply to the electrical equipment cut off. [Brief description of the drawings]

[0008] [Figure 1]1 is a schematic configuration diagram of a vehicle equipped with an electronic control device according to an embodiment of the present invention, and is also a functional block diagram showing essential parts of control functions for various controls in the vehicle. [Diagram 2] FIG. 2 is a perspective view illustrating the configuration of the parking lock device shown in FIG. [Diagram 3] 11A and 11B are diagrams illustrating an example of a predetermined special operation by operating the shift lever and the EPB switch to switch the condition for enabling the automatic EPB function. [Figure 4] 11A and 11B are diagrams illustrating an example of a predetermined special operation by operating an operation switch to switch a condition for enabling the automatic EPB function. [Diagram 5] 2 is an example of a flowchart illustrating a control operation of the electronic control device shown in FIG. 1. [Figure 6] 11A and 11B are diagrams illustrating an example of execution of N-range power-off control. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that in the embodiments, the drawings are appropriately simplified or modified, and the dimensional ratios and shapes of the various parts are not necessarily drawn accurately. EXAMPLES

[0010] FIG. 1 is a schematic diagram of a vehicle 10 equipped with an electronic control device 90 according to an embodiment of the present invention, and is also a functional block diagram showing the main parts of the control functions for various controls in the vehicle 10.

[0011] The vehicle 10 includes, for example, an engine 12 and an electric motor MG as a power source for traveling, which are well-known components. The vehicle 10 is a hybrid vehicle. The vehicle 10 includes, in order from the engine 12 side, an automatic transmission 18, a differential 26, a pair of axles 28, and the like in a power transmission path between the engine 12 and a pair of drive wheels 14, all of which are well-known components. The vehicle 10 includes a shift operation device 30, a power switch 40, an EPB switch 50, a steering device 52, an EPB 80, an electronic control device 90, a power source 70, and the like.

[0012] The shift operation device 30 employs a so-called shift-by-wire system. The shift operation device 30 includes, for example, a shift lever 32 and a P switch 34. The shift lever 32 and the P switch 34 are both operators that are returned to their initial positions when not operated by the driver (in other words, automatic return type operators that automatically return to their initial positions when the operating force is released). The shift operation device 30 corresponds to the "shift-by-wire device" of the present invention that realizes the automatic P switching function described below.

[0013] The operating positions of the shift lever 32 are, for example, "H position", "R position", "N position", "D position", and "B position". The "H position" is the initial position (=home position) of the shift lever 32. The "R position" is an operating position for selecting the R range. The R range is a shift range that allows the vehicle 10 to travel backward. The "N position" is an operating position for selecting the N range. The N range is a shift range that provides a neutral state in which power transmission from a power source for travel to a pair of drive wheels 14 is cut off. For example, in the N range, the automatic transmission 18 is in a neutral state. The "D position" is an operating position for selecting the D range. The D range is a shift range that allows the vehicle 10 to travel forward. The "B position" is an operating position for selecting a decelerated forward travel state in which engine braking using the engine 12 is easily applied (i.e., a state in which the engine braking effect is more strongly obtained) when a power transmission path for forward travel is formed by operating the shift lever to the "D position".

[0014] The P switch 34 is, for example, a momentary push button switch. When the P switch 34 is not pressed, the P switch 34 is set to its initial position (= home position). When the P switch 34 is pressed, the P range (= parking range) is selected. The P range is a shift range in which the vehicle 10 is in a neutral state and the pair of drive wheels 14 are mechanically fixed so as not to rotate. The "non-N range" refers to a shift range other than the N range, that is, the P range, the R range, the D range, and the B range. The "non-P range" refers to a shift range other than the P range, that is, the R range, the N range, the D range, and the B range.

[0015] For example, when one of the shift ranges is selected, the automatic transmission 18 is controlled to a state corresponding to the selected shift range. When the driver presses the P switch 34 while the vehicle 10 is stopped or traveling at an extremely low speed, the automatic transmission 18 is put into neutral and the parking lock device 16 is activated.

[0016] FIG. 2 is a perspective view for explaining the configuration of the parking lock device 16 shown in FIG. 1. The parking lock device 16 is a well-known parking lock device, and has a locked state in which a parking gear 66 that rotates in conjunction with the pair of drive wheels 14 is prevented from rotating, and an unlocked state in which the parking gear 66 is rotatable. In the unlocked state, when the shift control motor 60 rotates the shaft 62 and the detent plate 64 in the direction of arrow A, the parking pole 68 is switched to a locked state in which it meshes with the parking gear 66. In the locked state, when the shift control motor 60 rotates the shaft 62 and the detent plate 64 in the direction of arrow B, the parking pole 68 is switched to an unlocked state in which it is no longer meshed with the parking gear 66. When the parking lock device 16 is locked, the indicator lamp 38 (see FIG. 1) is turned on to indicate that the parking gear 66 is in the P range.

[0017] Return to FIG. 1. The EPB 80 is a known electric parking brake, and corresponds to the "electric parking brake" in the present invention. In FIG. 1, the wheel brakes 84 are provided on the pair of driving wheels 14, respectively, but the present invention is not limited thereto and may be provided on the pair of driven wheels. When the EPB motor 82 is rotationally driven to retract a pair of cables 88 via the cable retraction device 86, the wheel brakes 84 are actuated to apply a braking force to the vehicle 10, that is, the EPB 80 is in a braking state. When the EPB motor 82 rotates to a predetermined position, the cable retraction device 86 is configured to mechanically hold the tension of the cables 88. When the EPB motor 82 is rotationally driven in the reverse direction, the wheel brakes 84 are released, that is, the EPB 80 is in a non-braked state. The pair of driving wheels 14 or the pair of driven wheels on which the wheel brakes 84 of the EPB 80 are provided correspond to the "wheels" in the present invention.

[0018] Power supply 70 is a vehicle power supply capable of supplying power to driving devices related to vehicle driving and electrical equipment such as a car audio system and a navigation system that are not related to vehicle driving, and is a secondary battery. For example, the driving devices include the electric motor MG and auxiliary equipment that controls engine 12. For example, power supply 70 may be divided into a battery that supplies power to electric motor MG and a battery that supplies power to other devices.

[0019] The power switch 40 is a switch for the driver to switch the state of the power supply of the vehicle 10. The power switch 40 is, for example, an automatic return type push button switch disposed near the driver's seat. For example, the power supply modes of the power source 70 include a "power on mode" in which power is supplied to both the driving equipment and the electrical equipment, a "partial on power off mode" in which the power supply to the driving equipment is cut off and the power supply to the electrical equipment is cut off, and a "power off mode" in which the power supply to both the driving equipment and the electrical equipment is cut off. For example, the power supply mode of the power source 70 is switched by pressing the power switch 40. Here, "turning off the power source 70" means switching the power source 70 from the power on mode to either the partial on power off mode or the power off mode, and the operation of the power switch 40 to turn off the power source 70 is referred to as a "power off operation." "Turning on the power supply 70" refers to switching the power supply 70 from either the partial-on power-off mode or the power-off mode to the power-on mode, and the operation of the power switch 40 to turn on the power supply 70 is referred to as a "power-on operation." In the "partial-on power-off mode," power is supplied to the electrical components, so the battery is more likely to run out compared to the power-off mode.

[0020] The steering device 52 includes a steering wheel 54 for the driver to steer the vehicle 10. The steering wheel 54 is provided with, for example, an operation switch 56 that can be operated by the driver. The vehicle 10 is provided with a display device 58 at a position that is easily visible to the driver. The operation switch 56 corresponds to the "input device" of the present invention.

[0021] The vehicle 10 has an automatic P switching function that automatically switches to the P range when a power-off operation is performed, and then turns off the power source 70. The vehicle 10 also has an automatic EPB function that automatically puts the EPB 80 into a braking state after the vehicle 10 is switched to the P range.

[0022] 3 is a diagram illustrating an example of a specific special operation by operating the shift lever 32 and the EPB switch 50 to switch the condition for enabling the automatic EPB function. The EPB switch 50 can be operated, for example, by pushing and pulling. The shift lever 32 corresponds to the "operator" in the present invention.

[0023] The condition for enabling the automatic EPB function is referred to as the "auto mode". The "auto mode" corresponds to the "operation mode" in the present invention. For example, there are three types of auto modes: "mode on" (shown as AUTO MODE ON in FIG. 3), "limited mode off" (shown as AUTO MODE OFF in FIG. 3), and "mode off" (shown as DSBA Prohibition in FIG. 3). In the "mode on", the automatic EPB function is enabled when at least one of the following occurs in a stopped state: (i) a power off operation is performed, (ii) the P switch 34 is pressed to switch from the non-P range to the P range, and (iii) any of the doors of the vehicle 10 is opened. When the power off operation is performed in the "mode on", the power source 70 is set to the power off mode. In the "limited mode off", the automatic EPB function is enabled in the above case (iii), and the automatic EPB function is disabled in the above cases (i) and (ii). When the power off operation is performed in the "limited mode off", the power source 70 is set to the power off mode. In the "off mode," the automatic EPB function is disabled in any of the above cases (i), (ii), and (iii). If the power-off operation is performed in the "off mode," the power supply 70 is put into the power-off mode.

[0024] When the auto mode is "mode on", if a long press operation is performed in which the EPB switch 50 is pressed for a predetermined period Tlng1 [sec] or more in the N range, the mode is switched from "mode on" to "limited mode off". This long press operation is a release operation that switches the auto mode to the release side. The predetermined period Tlng1 is a predetermined time, for example, several seconds, in order to distinguish between a long press operation and a pressing operation other than a long press operation that is a release operation. When the auto mode is "limited mode off" and in the N range, if a long press operation of the EPB switch 50 is performed as a release operation, the mode is switched from "limited mode off" to "mode off". The switching operation to the N range and the long press operation of the EPB switch 50 when the auto mode is "mode on", and the subsequent long press operation of the EPB switch 50 in the N range are referred to as a "first special operation". The first special operation corresponds to a "predetermined special operation" in the present invention. When the auto mode is in the "limited mode off" state, if the EPB switch 50 is pulled for a predetermined period Tlng2 [sec] or more, the mode is switched from the "limited mode off" to the "mode on". This long pull operation is an operation that switches the auto mode to the activated side. The predetermined period Tlng2 is a predetermined time, for example, several seconds, in order to distinguish between a long pull operation and a pull operation other than the long pull operation that is an activation operation. When the auto mode is in the "mode off" state, if the EPB switch 50 is pulled and the communication network between the ECUs described later is in an abnormal state (= invalid state), the mode is switched from the "mode off" to the "limited mode off". When the auto mode is in the "mode off" state, if (a) the EPB switch 50 is pulled and the communication network between the ECUs is in a normal state (= valid state) or (b) the shift range is switched to a non-N range, the mode is switched from the "mode off" to the "mode on". These pull operations are operation operations that switch the auto mode to the activated side. The pressing operation, the long pressing operation, the pulling operation, and the long pulling operation of the EPB switch 50 correspond to the "operation of selecting the operation mode of the electric parking brake" in the present invention.In the example shown in Figure 3, pressing and long pressing the EPB switch 50 are release operations, and pulling and long pulling the EPB switch 50 are activation operations, but pressing and long pressing the EPB switch 50 may be activation operations, and pulling and long pulling the EPB switch 50 may be release operations.

[0025] FIG. 4 is a diagram for explaining an example of a predetermined special operation by operating the operation switch 56 for switching the condition for enabling the automatic EPB function.

[0026] As shown in FIG. 4, the display device 58 displays the auto mode "mode on" (=AUTO MODE ON), "limited mode off" (=AUTO MODE OFF), and "mode off" (=DSBA Prohibition) as a selectable menu by operating the operation switch 56. The driver can select one of the menus by operating the operation switch 56. The operation of the operation switch 56 to select "mode off" (=DSBA Prohibition) from the menu is referred to as a "second special operation". For example, when the vehicle speed V [km / h] is equal to or lower than a predetermined vehicle speed value V_jdg, the second special operation is permitted, and otherwise the second special operation is prohibited. That is, the second special operation is permitted only when the vehicle speed V is equal to or lower than the predetermined vehicle speed value V_jdg. The predetermined vehicle speed value V_jdg is a vehicle speed value that is predetermined so that the operation of the operation switch 56 can be performed safely, and is, for example, a vehicle speed value slightly higher than zero in the vicinity of zero. The second special operation corresponds to the "predetermined special operation" in the present invention.

[0027] Return to FIG. 1. The electronic control device 90 includes a plurality of ECUs that function as control devices for controlling the various parts of the vehicle 10. The electronic control device 90 corresponds to the "control device" in the present invention. The electronic control device 90 includes an EPB-ECU 92, a SBW-ECU 94, and a display device ECU 96. The EPB-ECU 92 is an ECU that controls the operation of the EPB 80. The SBW-ECU 94 is an ECU that controls the switching of the shift range of the vehicle 10 and the power supply of the power source 70. The display device ECU 96 is an ECU that displays a menu on the display device 58 so that the auto mode can be selected by operating the operation switch 56. For example, the ECUs of the EPB-ECU 92, the SBW-ECU 94, and the display device ECU 96 in the electronic control device 90 are each connected to a communication network using a CAN (Controller Area Network) communication circuit. This allows each ECU to exchange data with each other. Each ECU is configured to include a so-called microcomputer equipped with, for example, a CPU, RAM, ROM, an input / output interface, etc., and the CPU executes various controls of the vehicle 10 by performing signal processing according to a program previously stored in the ROM while utilizing the temporary storage function of the RAM. In this embodiment, the electronic control device 90 is configured to be divided into a plurality of ECUs, but all or part of these may be integrated into a common ECU as necessary.

[0028] An EPB switch signal SWepb indicating, for example, that the EPB switch 50 has been pressed, pressed and held, pulled, or pulled and held, is input to the EPB-ECU 92. The EPB-ECU 92 outputs an EPB control signal Sepb that switches the EPB 80 between a braking state and a non-braking state.

[0029] The SBW-ECU 94 receives various signals based on detection values ​​from various sensors (e.g., lever position sensor 36, P switch 34, shift control electric motor 60, power switch 40, output rotation sensor 44, etc.) (e.g., lever position signal Slev indicating the position of the shift lever 32, P switch signal Spsw indicating the pressing operation of the P switch 34, rotation amount signal Ro [rad] indicating the rotation angle of the shift control electric motor 60, power switch signal SWpwr indicating that the power switch 40 has been pressed, output rotation speed Nout [rpm] which is the rotation speed of the output gear 22 corresponding to the vehicle speed V, etc.). The SBW-ECU 94 outputs various command signals (e.g., an engine control signal Se for controlling the engine 12, an MG control signal Smg for controlling the rotation of the electric motor MG, a shift control signal Sat for controlling the shift of the automatic transmission 18, a parking lock control signal Splk for switching the parking lock device 16 between a locked state and an unlocked state, a P range indication signal Sindi for indicating that the current shift range is the P range, etc.) to each device (e.g., the engine 12, the electric motor MG, the automatic transmission 18, the parking lock device 16, the indicator lamp 38, etc.) provided in the vehicle 10. The electronic control device 90 outputs a power supply control signal Sps to the power supply 70, which controls the state of power supply from the power supply 70.

[0030] The display device ECU 96 receives an operation signal Sope indicating that an operation has been performed using, for example, the operation switch 56. The display device ECU 96 outputs a display control signal Sdisp for controlling the display content of the display device 58.

[0031] The EPB-ECU 92 functionally comprises an auto mode setting unit 92a, an auto mode determination unit 92b, an EPB control unit 92c, a brake abnormality determination unit 92d, and an ECU abnormality determination unit 92e.

[0032] The auto mode setting unit 92a sets the auto mode. The auto mode determination unit 92b determines whether the auto mode is "mode off." The EPB control unit 92c executes control to switch the EPB 80 from one of the braking state and the non-braking state to the other.

[0033] The brake abnormality determination unit 92d determines whether or not at least one of the parking lock device 16 and the EPB 80 is in an abnormal state. For example, if the rotation amount signal Ro does not correspond to the parking lock control signal Splk, it is determined that the parking lock device 16 is in an abnormal state. For example, if the position of a parking brake shoe lever (not shown) operatively connected to the cable 88 is detected by a position sensor (not shown), and the position of the parking brake shoe lever does not correspond to the EPB control signal Sepb, it is determined that the EPB 80 is in an abnormal state.

[0034] The ECU abnormality determination unit 92e determines whether or not the cooperative operation between the EPB-ECU 92 and the SBW-ECU 94 or the display device ECU 96 (hereinafter referred to as "ECU cooperative operation") is in an abnormal state. For example, the ECU abnormality determination unit 92e determines whether or not the communication network between the ECUs is in an abnormal state. If the SBW-ECU 94 or the display device ECU 96 is in an abnormal state or the communication network is in an abnormal state such as a broken line, it is determined that the ECU cooperative operation is in an abnormal state.

[0035] The SBW-ECU 94 functionally includes a special operation determination unit 94a, an OFF operation determination unit 94b, an N range determination unit 94c, a P switch abnormality determination unit 94d, a shift range control unit 94e, an ON operation determination unit 94f, a notification control unit 94g, and a power supply control unit 94h. The display device ECU 96 functionally includes a display control unit 96a and a special operation determination unit 96b.

[0036] The special operation determination unit 94a determines whether or not a first special operation has been performed by the driver. The display control unit 96a causes the display device 58 to display an auto mode menu by operating the operation switch 56. The special operation determination unit 96b determines whether or not a second special operation has been performed by the driver. When it is determined that at least one of the first special operation and the second special operation has been performed, the auto mode setting unit 92a sets the auto mode to "mode off". In this embodiment, the "predetermined special operation" in the present invention includes two operations: a first special operation and a second special operation.

[0037] The OFF operation determination unit 94b determines whether or not a power OFF operation has been performed. The N range determination unit 94c determines whether or not the shift range is the N range. The P switch abnormality determination unit 94d determines whether or not the P switch 34 is in an abnormal state. For example, when a power OFF operation is performed while the vehicle is stopped, if the P switch signal Spsw, which indicates a pressing operation of the P switch 34, is not input for a predetermined number of times in succession, the P switch 34 is determined to be in an abnormal state. The predetermined number of times is a number that is determined in advance. The shift range control unit 94e controls the shift range based on the operation content of the shift operation device 30. The power supply control unit 94h controls the state of power supply from the power supply 70.

[0038] For example, when the auto mode is "mode off" and a power-off operation is performed, if the shift range is N range, the P switch 34 is not in an abnormal state, both the parking lock device 16 and the EPB 80 are in a normal state, and the ECU cooperative operation is not in an abnormal state, the N-range power-off control is executed. The "N-range power-off control" is a control in which the shift range control unit 94e maintains the shift range in N range, the EPB control unit 92c sets the EPB 80 to a non-braking state, and the power supply control unit 94h switches the power supply 70 to the power-off mode.

[0039] For example, when the auto mode is "mode on" and the power is turned off, if either the shift range is not N range or the P switch 34 is in an abnormal state, the automatic P switching function and the automatic EPB function are enabled. That is, the shift range control unit 94e sets the shift range to P range, the EPB control unit 92c sets the EPB 80 to the braking state, and the power supply control unit 94h turns off the power supply 70.

[0040] For example, when the auto mode is "limited mode off" and the power is turned off, if either the shift range is not N range or the P switch 34 is in an abnormal state, the automatic P switching function is enabled, the automatic EPB function is disabled, and the power supply 70 is in the power off mode. That is, the shift range control unit 94e sets the shift range to the P range, the EPB control unit 92c sets the EPB 80 to a non-braking state, and the power supply control unit 94h switches the power supply 70 to the power off mode.

[0041] For example, when the power-off operation is performed, if at least one of the parking lock device 16 and the EPB 80 is in an abnormal state or if the ECU collaborative operation is in an abnormal state, the notification control unit 94g notifies the driver of the abnormal state.

[0042] The on-operation determination unit 94f determines whether or not a power-on operation has been performed. If a power-on operation has been performed, the auto mode setting unit 92a sets the auto mode to "mode on." In other words, if a power-on operation is performed after the power supply 70 has been turned off, the power supply 70 is turned on and the automatic P switching function and the automatic EPB function are enabled.

[0043] Fig. 5 is an example of a flowchart illustrating the control operation of the electronic control device 90 shown in Fig. 1. The flowchart in Fig. 5 is repeatedly executed.

[0044] In step S10, which corresponds to the functions of the special operation determination unit 94a and the special operation determination unit 96b, it is determined whether a predetermined special operation has been performed. Hereinafter, "step" is omitted. If the determination in S10 is YES, in S20, which corresponds to the function of the auto mode setting unit 92a, the auto mode is changed to "mode off", that is, the automatic P switching function and the automatic EPB function are disabled. After execution of S20 and if the determination in S10 is NO, in S30, which corresponds to the function of the off operation determination unit 94b, it is determined whether a power off operation has been performed. If the determination in S30 is YES, in S40, which corresponds to the function of the N range determination unit 94c, it is determined whether the shift range is the N range. If the determination in S40 is YES, in S50, which corresponds to the function of the P switch abnormality determination unit 94d, it is determined whether the P switch 34 is in an abnormal state. If the judgment in S50 is NO, in S60, which corresponds to the functions of the brake abnormality judgment unit 92d and the ECU abnormality judgment unit 92e, it is judged whether at least one of the following is true: the parking lock device 16 is in an abnormal state, the EPB 80 is in an abnormal state, or the ECU cooperative operation is in an abnormal state.

[0045] If the determination in S60 is NO, in S70 corresponding to the function of the auto mode determination unit 92b, it is determined whether the auto mode is "mode off", that is, whether the automatic P switching function and the automatic EPB function are disabled. If the determination in S70 is YES, in S80 corresponding to the functions of the shift range control unit 94e, the EPB control unit 92c, and the power supply control unit 94h, the N-range power off control is executed. If the determination in S40 is NO, if the determination in S50 is YES, or if the determination in S70 is NO, in S90 corresponding to the functions of the shift range control unit 94e, the EPB control unit 92c, and the power supply control unit 94h, the automatic P switching function and the automatic EPB function are enabled, the shift range is set to the P range, the EPB 80 is operated, and the power supply 70 is turned off. After the execution of S80 and after the execution of S90, in S100 corresponding to the function of the on operation determination unit 94f, it is determined whether the power on operation has been performed. If the determination in S100 is NO, S100 is executed again. If the determination in S100 is YES, the auto mode is set to "mode on" in S110, which corresponds to the function of the auto mode setting unit 92a.

[0046] If the determination in S60 is YES, the driver is notified of the abnormal state in S120, which corresponds to the function of the notification control unit 94g, and the driver is prompted to park with the automatic P switching function and the automatic EPB function enabled.

[0047] If the determination in S30 is NO, the process returns after S110 and after S120 are both executed.

[0048] FIG. 6 is a diagram for explaining an example of the execution of the N-range power-off control.

[0049] In state 1, the vehicle 10 has the power source 70 in the power on mode, the shift range in the D range, the EPB 80 in the non-braking state, and the auto mode in the "mode on". In state 1, when the shift lever 32 is operated to the N position and the EPB switch 50 is pressed and held, the vehicle 10 goes to state 2. At this time, a single buzzer sound is emitted and, for example, "AUTO MODE OFF" is displayed on the display device 58. In state 2, the power source 70 is in the power on mode, the shift range in the N range, the EPB 80 in the non-braking state, and the auto mode in the "limited mode off". In state 2, when the EPB switch 50 is pressed and held, the vehicle 10 goes to state 3. At this time, a single buzzer sound is emitted and, for example, "DSBA Prohibition" is displayed on the display device 58 and the EPB mark is flashed. The EPB mark is a display mark for informing the driver that the auto mode has been switched to the "mode off". In state 3, the power supply 70 is in the power on mode, the shift range is the N range, the EPB 80 is in the non-braking state, and the auto mode is in "mode off". In state 3, when the power off operation is performed, the vehicle 10 goes into state 4. At this time, a single buzzer sound is emitted and the N range display is made to flash. In state 4, the power supply 70 is in the power off mode, the shift range is the N range, the EPB 80 is in the non-braking state, and the auto mode is in "mode off". The N range display corresponds to the "vehicle state display" in the present invention. Before the predetermined period Tdis [sec] has elapsed from the time when the power off operation is performed and before the driver gets off the vehicle, the "vehicle state display" is displayed, and when at least one of the predetermined period Tdis has elapsed and the driver has got off the vehicle, the vehicle state display is turned off. The predetermined period Tdis is a period determined in advance so that the driver can recognize that the auto mode has become "mode off". The predetermined period Tdis corresponds to the "predetermined period" in the present invention.

[0050] According to this embodiment, when the automatic P switching function and the automatic EPB function are disabled by at least one of the first special operation and the second special operation and the power off operation is performed, the N-range power off control is executed. That is, the vehicle is placed in the N-range state and the power source 70 is turned off in a state in which the power supply to the electrical equipment is cut off. As a result, the vehicle 10 is parked in a movable state and the power source 70 is turned off in a state in which the power supply to the electrical equipment is cut off, thereby suppressing the battery from running down.

[0051] According to this embodiment, when a power-on operation is performed after the power supply 70 is turned off, the power supply 70 is turned on and the automatic P switching function and the automatic EPB function are enabled. After the power supply 70 is turned on, the vehicle 10 is generally driven. By enabling the automatic P switching function and the automatic EPB function, it is possible to prevent the vehicle 10 that has been driven and then parked from having the automatic P switching function and the automatic EPB function disabled against the driver's intention.

[0052] According to this embodiment, (a) before the predetermined period Tdis has elapsed from the time when the power-off operation was performed and before the driver gets off the vehicle, the N range indication flashes on the display device 58, and (b) when at least one of the predetermined period Tdis has elapsed and the driver gets off the vehicle, the flashing of the N range indication on the display device 58 is turned off. The driver can recognize that the N range power-off control has been executed in the predetermined period Tdis, and the turning off of the indication reduces power consumption of the power source 70.

[0053] According to this embodiment, the first special operation is a long press of the EPB switch 50 and a subsequent long press of the EPB switch 50 in the N range, and the second special operation is an operation of the operation switch 56 to select "MODE OFF" from the menu. In this way, the first special operation and the second special operation are operations unrelated to vehicle driving, thereby preventing the N range power off control from being executed against the driver's intention.

[0054] According to this embodiment, the operation of selecting the disablement of the automatic P switching function and the automatic EPB function via the operation switch 56 is permitted when the vehicle speed V is equal to or lower than a predetermined vehicle speed value V_jdg, and is prohibited otherwise. This allows the second special operation to be performed safely.

[0055] It should be noted that the above is an embodiment of the present invention, and the present invention can be embodied in various forms with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

[0056] The present invention is not limited to hybrid vehicles, but can also be applied to vehicles that are equipped with only an electric motor MG or only an engine 12 as a power source for running.

[0057] In the above embodiment, when the power supply 70 is turned off and then the power supply is turned on, the automatic P switching function and the automatic EPB function are enabled, but the present invention is not limited to this and may be configured such that they are not enabled. In the above embodiment, when the power supply is turned off, the "vehicle status display" is displayed, but the present invention is not limited to this and may be configured such that the "vehicle status display" is not displayed.

[0058] In the above embodiment, the predetermined special operation is the first special operation or the second special operation, but the present invention is not limited to this. The first special operation is not limited to the above embodiment, and may be another combination of the operation of the shift lever 32 of the shift operation device 30 and the selection operation of the auto mode by the EPB switch 50. The second special operation is not limited to the operation of the operation switch 56, and may be, for example, a mode in which "mode off" is selected from a menu displayed on the screen by operating a switch provided in the navigation system. In the above embodiment, the operation in which the automatic P switching function and the automatic EPB function are disabled via the operation switch 56 is limited to a case in which the vehicle speed V is equal to or lower than a predetermined vehicle speed value V_jdg, but the present invention is not limited to this.

[0059] In the above-described embodiment, the vehicle 10 has an automatic EPB function, but the present invention is not limited to this. For example, the present invention can also be applied to an embodiment in which the vehicle 10 does not have the automatic EPB function and the EPB 80 is in a braking state only by manual operation by the driver. In this embodiment, when the power-off operation is performed with the automatic P switching function disabled, the vehicle is put into the N range and the power supply 70 is turned off with the power supply to the electrical equipment cut off. The EPB 80 is put into a non-braking state due to no manual operation being performed, thereby achieving the same effects as the embodiment.

[0060] In the above-described embodiment, when a power-off operation is performed while the auto mode is “mode on” or “limited mode off,” the power supply 70 goes into the power-off mode. However, the present invention is not limited to this, and the power supply 70 may go into the partially on power-off mode. [Explanation of symbols]

[0061] 10: vehicle, 30: shift operation device (shift-by-wire device), 32: shift lever (operator), 34: P switch, 56: operation switch (input device), 58: display device, 80: EPB (electric parking brake), 90: electronic control device (control device), 70: power source, Tdis: predetermined period (predetermined period), V: vehicle speed, V_jdg: predetermined vehicle speed value

Claims

1. A vehicle control device having an automatic P switching function that automatically switches to P range and then turns off the power when a power-off operation is performed, When the power-off operation is performed in a state where the automatic P switching function is disabled by a predetermined special operation, the power is turned off in a state where the range is set to N and the power supply to the electrical equipment is cut off. A vehicle control device comprising:

2. When the power is turned on after being turned off, the power is turned on and the automatic P switching function is enabled.

2. The vehicle control device according to claim 1.

3. a vehicle state display indicating that the range is N is displayed before a predetermined period of time has elapsed since the power-off operation was performed and before the driver gets off the vehicle; When at least one of the predetermined period of time has elapsed and the driver has got off the vehicle, the vehicle state display is turned off.

3. The vehicle control device according to claim 1 or 2.

4. The predetermined special operation is at least one of a combination of an operation of an operator of a shift-by-wire device that realizes the automatic P switching function and an operation of selecting an operation mode of an electric parking brake that applies a braking force to the wheels, or an operation of selecting the disablement of the automatic P switching function from a menu via an input device after a menu for disabling the automatic P switching function is displayed on a display device.

3. The vehicle control device according to claim 1 or 2.

5. An operation of selecting the disablement of the automatic P switching function via the input device is permitted when the vehicle speed is equal to or lower than a predetermined vehicle speed value, and is prohibited otherwise.

5. The vehicle control device according to claim 4.

Images