JP2010241179A - Load adjustment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load adjustment device which suppresses unnecessary power consumption. <P>SOLUTION: A load adjustment ECU 1 includes: a first memory part 11, which stores a first stop condition and a first supply condition that are conditions for stopping and starting the supply of electric power to a first load 31; a second memory part 12, which stores a second stop condition and a second supply condition that are conditions for stopping and starting the supply of electric power to a second load 32 different from the first load 31; a first stop part 13, which stops the supply of electric power to the first load 31 when determining that the first stop condition is satisfied; a first supply part 14, which starts the supply of electric power to the first load 31 when determining that the first supply condition is satisfied; a second stop part 15, which stops the supply of electric power to the second load 32 when determining that the second stop condition is satisfied; and a second supply part 16, which starts the supply of electric power to the second load 32 when determining that the second supply condition is satisfied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a load adjustment device that adjusts a load to be supplied with electric power from a storage battery, for example, in a state where the vehicle is mounted on a vehicle and an ignition power source is turned off.

  Conventionally, since a battery is also used for starting an engine, various methods, devices, and the like for suppressing overdischarge of the battery (so-called battery rising) have been proposed (see, for example, Patent Document 1). The power supply system for a vehicle described in Patent Document 1 is operated by a load belonging to the first group operated by an occupant operating in the vehicle and by an occupant operation when the occupant leaves the vehicle, or by detecting the absence of the occupant A relay that is grouped into loads belonging to a second group including a crime prevention system for an operating vehicle, and stops power supply to the other when power is supplied to either the first group of loads or the second group of loads The switch which consists of is provided.

  In the vehicle power supply system described in Patent Document 1, when the load belonging to the first group and the load belonging to the second group are divided into groups, when power is supplied to one group, naturally, power is supplied to the other group. Therefore, the changeover switch is provided to stop the power supply and to cut off the power source battery and the load. Thus, by cutting off the unused load from the battery, dark current does not flow from the battery to the load, and unnecessary power consumption is suppressed.

JP 2007-238964 A

  However, in the vehicle power supply system described in Patent Document 1, since the power supply to the load is interrupted at a time, the dark current may not be sufficiently reduced. That is, in some cases, it is possible to further suppress unnecessary power consumption by cutting off the power supply to the load in stages according to the vehicle state.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a load adjusting device capable of suppressing unnecessary power consumption.

  In order to achieve the above object, the present invention has the following features. A first aspect of the present invention is a load adjustment device that adjusts a load to be supplied with power from a storage battery in a state in which an ignition power source is turned off and is installed in a vehicle. A first storage unit that stores a first stop condition that is a condition for stopping the supply and a first supply condition that is a condition for starting the supply of power to the first load; And a second memory for storing a second stop condition that is a condition for stopping the supply of power to the second load, and a second supply condition that is a condition for starting the supply of power to the second load. A first stop means for determining whether or not the first stop condition is satisfied, and stopping the supply of power to the first load when it is determined that the first stop condition is satisfied; and the first supply condition Is determined to be satisfied. And determining whether or not the second stop condition is satisfied, and if it is determined that the second load condition is satisfied, the second load is started. A second supply means for stopping the supply of power to the power supply, and whether or not the second supply condition is satisfied, and when it is determined that the second supply condition is satisfied, the supply of power to the second load is started A second supply means.

  According to a second invention, in the first invention, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied, and the first supply condition is the first condition 2 This condition is satisfied only when the supply condition is satisfied.

  According to a third invention, in the first invention, the second stop condition is satisfied only when the first stop condition is satisfied, and the second supply condition is the first condition. This is a condition that is satisfied only when one supply condition is satisfied.

  According to the first aspect, the first stop condition, which is a preset condition for stopping the supply of power to the first load, and the condition for starting the supply of power to the first load are the first conditions. One supply condition is stored in advance in the first storage means. The second stop condition is a condition for stopping the supply of power to the second load, which is different from the first load, and the condition for starting the supply of power to the second load. The second supply condition is stored in advance in the second storage means. Further, it is determined whether or not the first stop condition is satisfied, and when it is determined that the first stop condition is satisfied, the supply of power to the first load is stopped. In addition, it is determined whether or not the first supply condition is satisfied. When it is determined that the first supply condition is satisfied, supply of electric power to the first load is started. In addition, it is determined whether or not the second stop condition is satisfied, and when it is determined that the second stop condition is satisfied, the supply of power to the second load is stopped. Furthermore, it is determined whether or not the second supply condition is satisfied. When it is determined that the second supply condition is satisfied, supply of electric power to the second load is started. Therefore, unnecessary power consumption can be suppressed.

  That is, the power supplied to the first load is stopped when the first stop condition is satisfied, and is started when the first supply condition is satisfied. The power supplied to the second load is stopped when the second stop condition is satisfied, and is started when the second supply condition is satisfied. Accordingly, appropriate loads are set as the first load and the second load, and the first stop condition, the first supply condition, the second stop condition, and the second supply condition are set to appropriate conditions. By doing so, unnecessary power consumption can be suppressed.

  According to the second aspect of the invention, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied, and the first supply condition is that the second supply condition is Since the condition is satisfied only when it is satisfied, unnecessary power consumption can be more effectively suppressed.

  That is, for example, when the first load is an ECU (Electronic Control Unit) related to vehicle travel and the second load is an ECU not related to vehicle travel, the second stop condition Is set to a condition that is satisfied only when the first stop condition is satisfied, and the first supply condition is set to a condition that is satisfied only when the second supply condition is satisfied. By setting, unnecessary power consumption can be more effectively suppressed.

  In other words, for example, the first stop condition is set to an ACC (ACCessory) power supply being shifted from an ON state to an OFF state, the second stop condition is added to the first stop condition, and the door is set to “Unlock”. In the case of setting the transition from the “locked” state to the “locked” state, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied. Further, for example, the second supply condition is set that the door has shifted from the “locked” state to the “unlocked” state, and the first supply condition is added to the second supply condition, so that the ACC power supply In the case of setting that the state has shifted from the “OFF” state to the “ON” state, the first supply condition is a condition that is satisfied only when the second supply condition is satisfied.

  In addition, the first stop condition, the second stop condition, the first supply condition, and the second supply condition are set as described above to supply the first load and the second load at appropriate timing. The power to be used can be stopped and started.

  According to the third aspect, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied, and the second supply condition is that the first supply condition is Since the condition is satisfied only when it is satisfied, unnecessary power consumption can be more effectively suppressed.

  That is, for example, when the first load is an ECU or the like that takes time to start and the second load is an ECU or the like that does not take time to start, the second stop condition is set to the first stop condition. By setting the condition to be satisfied only when the stop condition is satisfied, and setting the second supply condition to be the condition to be satisfied only when the first supply condition is satisfied, Furthermore, unnecessary power consumption can be effectively suppressed.

  That is, for example, the first stop condition is set when the ACC power source is shifted from the ON state to the OFF state, and the driver's seat side door is shifted from the “open” state to the “closed” state. When the second stop condition is set to the transition from the “unlocked” state to the “locked” state in addition to the first stop condition, the second stop condition is satisfied with the first stop condition. This is the only condition that holds. Further, for example, the first supply condition is set that the door on the driver's seat side has shifted from the “closed” state to the “open” state, and the second supply condition is added to the first supply condition, In the case of setting that the key is inserted (or that the authentication of the electronic key has been completed), the condition that the second supply condition is satisfied only when the first supply condition is satisfied. It is.

  In addition, the first stop condition, the second stop condition, the first supply condition, and the second supply condition are set as described above to supply the first load and the second load at appropriate timing. The power to be used can be stopped and started.

The block diagram which shows the structure of the load adjustment apparatus which concerns on 1st Embodiment of this invention. Block diagram showing an example of the functional configuration of the load adjustment ECU Chart showing examples of first load, second load, etc. of load adjustment ECU Flow chart showing an example of the operation of the load adjustment ECU The block diagram which shows the structure of the load adjustment apparatus which concerns on 2nd Embodiment of this invention. Block diagram showing an example of the functional configuration of the load adjustment ECU Chart showing examples of first load, second load, etc. of load adjustment ECU Flow chart showing an example of the operation of the load adjustment ECU

  Hereinafter, embodiments of a load adjusting device according to the present invention will be described with reference to the drawings. A load adjustment device according to the present invention is a device that is mounted on a vehicle and adjusts a load to be supplied with electric power from a storage battery in a state where an ignition power source is turned off. First, the configuration of the load adjustment device according to the first embodiment of the present invention will be described with reference to FIGS.

<First Embodiment>
FIG. 1 is a block diagram illustrating the configuration of the load adjustment device according to the first embodiment. As shown in FIG. 1, a load adjustment ECU (Electronic Control Unit) 1 (= corresponding to a load adjustment device) according to the present invention is communicably connected to an input device 2 as a peripheral device and is connected to a load 3. Control whether to supply power. The load 3 includes a first load 31 and a second load 32. First, the input device 2 of the load adjustment ECU 1 will be described with reference to FIG. The input device 2 includes a storage battery 21, an ACC switch 22, and a door lock sensor 23.

  The storage battery 21 supplies power to the load 3 (= the first load 31 and the second load 32) in a state where the ignition power is turned off based on an instruction from the load adjustment ECU 1. That is, when the storage battery 21 receives an instruction from the load adjustment ECU 1 to stop the power supply, when the storage battery 21 receives an instruction to stop the power supply and start the power supply, Start supplying power.

  In the first embodiment, a case will be described in which the load adjustment ECU 1 controls whether or not to supply power to the load 3 (= first load 31 and second load 32). It is also possible to control whether power is supplied to the load 3 via a switch such as.

  The ACC (ACCessory) switch 22 is a switch that detects whether the ACC (ACCessory) power supply is on or off. The ACC switch 22 outputs a signal indicating whether the ACC power supply is on or off to the load adjustment ECU 1.

  The door lock sensor 23 is a sensor that detects whether the door is locked or unlocked. The door lock sensor 23 outputs a signal indicating whether the door is in a locked state or an unlocked state to the load adjustment ECU 1.

  FIG. 2 is a block diagram illustrating an example of a functional configuration of the load adjustment ECU 1. As shown in FIG. 2, the load adjustment ECU 1 functionally includes a first storage unit 11, a second storage unit 12, a first stop unit 13, a first supply unit 14, a second stop unit 15, and a second storage unit. A supply unit 16 is provided.

  The load adjustment ECU 1 causes a microcomputer disposed in a proper position of the load adjustment ECU 1 to execute a control program stored in advance in a ROM (Read Only Memory) disposed in a proper position of the load adjustment ECU 1. Functionally, the microcomputer functions as a first storage unit 11, a second storage unit 12, a first stop unit 13, a first supply unit 14, a second stop unit 15, a second supply unit 16, and the like. Make it work.

  The first storage unit 11 (corresponding to the first storage unit) starts the first stop condition, which is a condition for stopping the supply of power to the first load 31, and the supply of power to the first load 31. It is a function part which stores the 1st supply conditions which are conditions beforehand. The first stop condition stored in the first storage unit 11 is read by the first stop unit 13, and the first supply condition stored in the first storage unit 11 is read by the first supply unit 14.

  The second storage unit 12 (corresponding to the second storage unit) starts the second stop condition, which is a condition for stopping the supply of power to the second load 32, and the supply of power to the second load 32. It is a functional unit that stores in advance a second supply condition that is a condition. The second stop condition stored in the second storage unit 12 is read by the second stop unit 15, and the second supply condition stored in the second storage unit 12 is read by the second supply unit 16.

  3 shows the first load 31, the second load 32, the first stop condition stored in the first storage unit 11, the first supply condition, the second stop condition stored in the second storage unit 12, It is a chart which shows an example of 2 supply conditions. As shown in FIG. 3, the first load 31 is an ECU related to the traveling of the vehicle, and specifically includes a power train ECU and a chassis ECU. Here, the power train ECU includes a brake control ECU. The chassis system ECU includes a steering control ECU.

  The second load 32 is an ECU that is not related to the traveling of the vehicle, and specifically includes a door peripheral ECU, an instrument panel peripheral ECU, and a multimedia system ECU. Here, the door peripheral ECU includes a door opening / closing control ECU and a power window control ECU. The instrument panel peripheral ECU includes a seat drive control ECU and an air conditioner control ECU. The multimedia system ECU includes a car navigation system, a television, and a radio control ECU.

The first stop condition is
Condition A-1: The ACC power supply has shifted from the ON state to the OFF state, and the second stop condition is in addition to the first stop condition (= condition A-1)
Condition A-2: It is set that the door has shifted from the “unlocked” state to the “locked” state.

The second supply condition is
Condition B-1: It is set that the door has shifted from the “locked” state to the “unlocked” state, and the first supply condition is in addition to the second supply condition (= condition B-1),
Condition B-2: It is set that the ACC power source has shifted from the “OFF” state to the “ON” state.

  In this case, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied, and the first supply condition is the second supply condition. It is a condition that is satisfied only when the condition is satisfied.

  Returning to FIG. 2 again, the functional configuration of the load adjustment ECU 1 will be described. The first stop unit 13 (corresponding to the first stop means) determines whether or not the first stop condition (condition A-1) shown in FIG. 3 is satisfied, and if it is determined that the first stop condition is satisfied, This is a functional unit that stops the supply of power to one load 31. Here, the first stop unit 13 determines whether or not the ACC power source has shifted from the ON state to the OFF state. When it is determined that the ACC power source has shifted, the first stop unit 13 travels a vehicle such as a power train ECU or a chassis ECU. The supply of electric power to the ECU related to is stopped.

  The second stop unit 15 (corresponding to the second stop means) determines whether or not the second stop condition (condition A-1 and condition A-2) shown in FIG. 3 is satisfied, and is determined to be satisfied. In this case, the function unit stops the supply of power to the second load 32. Here, the second stopping unit 15 determines whether or not the ACC power source has shifted from the ON state to the OFF state, and whether the door has shifted from the “unlocked” state to the “locked” state. In this case, the supply of electric power to ECUs that are not related to the traveling of the vehicle, such as door peripheral ECUs, instrument panel peripheral ECUs, and multimedia ECUs, is stopped.

  In this way, when the ACC power source shifts from the ON state to the OFF state, the supply of electric power to the ECU (= first load 31) related to the traveling of the vehicle such as the power train ECU and the chassis ECU is stopped. Further, when the door shifts from the “unlocked” state to the “locked” state, an ECU (= second load 32) not related to the traveling of the vehicle, such as a door peripheral ECU, an instrument panel peripheral ECU, or a multimedia ECU. The power supply to is stopped.

  Here, when the door shifts from the “unlocked” state to the “locked” state, it is determined that the driver has gone out of the vehicle, and the ECU (= second load 32) not related to the traveling of the vehicle is determined. Judged that power supply is no longer necessary. In this way, the power supply of the first load 31 and the second load 32 is stopped at an appropriate timing.

  The second supply unit 16 (corresponding to the second supply means) determines whether or not the second supply condition (condition B-1) shown in FIG. 3 is satisfied, and if it is determined that the second supply condition is satisfied, 2 is a functional unit that starts supplying power to the load 32. Here, the second stop unit 16 determines whether or not the door has transitioned from the “locked” state to the “unlocked” state, and when it is determined that the door has transitioned, the door peripheral ECU, the instrument panel peripheral ECU, Supply of electric power to an ECU that is not related to traveling of the vehicle such as a media ECU is started.

  The first supply unit 14 (corresponding to the first supply means) determines whether or not the first supply condition (condition B-1 and condition B-2) shown in FIG. 3 is satisfied, and is determined to be satisfied. In this case, the functional unit starts supplying power to the first load 31. Here, the first supply unit 14 determines whether the door has transitioned from the “locked” state to the “unlocked” state, and the ACC power source has transitioned from the “OFF” state to the “ON” state. When it is determined that the shift has been made, supply of electric power to an ECU related to the traveling of the vehicle such as a power train ECU or a chassis ECU is started.

  Thus, when the door shifts from the “locked” state to the “unlocked” state, an ECU (= second load 32) that is not related to the traveling of the vehicle, such as a door peripheral ECU, an instrument panel peripheral ECU, or a multimedia ECU. ) (= Second load 32), when the supply of electric power is started and the ACC power supply is shifted from the “OFF” state to the “ON” state, the vehicle such as the power train ECU, the chassis ECU, etc. Supply of electric power to the ECU (= first load 31) related to is started.

  Here, when the door shifts from the “locked” state to the “unlocked” state, it is determined that the driver has boarded the vehicle, and the electric power to the ECU (= second load 32) not related to the traveling of the vehicle Is determined to be necessary. Further, when the ACC power source shifts from the “OFF” state to the “ON” state, it is determined that the driver intends to start the engine and travel the vehicle, and the ECU (= first load) related to traveling 31) It is determined that it is necessary to supply power to. In this way, the supply of power from the first load 31 and the second load 32 is started at an appropriate timing.

  FIG. 4 is a flowchart showing an example of the operation of the load adjustment ECU 1. First, the first stop unit 13 determines whether or not the ignition power is turned off (S101). If it is determined that the ignition power is not turned off (NO in S101), the process is set to a standby state. When it is determined that the ignition power source is turned off (YES in S101), the first stop unit 13 causes the first stop condition (here, Condition A-1: the ACC power source has shifted from the ON state to the OFF state). ) Is established (S103). When it is determined that the first stop condition is not satisfied (NO in S103), the process is in a standby state. When it is determined that the first stop condition is satisfied (YES in S103), the first stop unit 13 stops the supply of power to the first load 31 (S105).

  Whether or not the second stop unit 15 satisfies the second stop condition (here, condition A-1 and condition A-2: the door has shifted from the “unlocked” state to the “locked” state). Is determined (S107). If it is determined that the second stop condition is not satisfied (NO in S107), the process proceeds to step S115. When it is determined that the second stop condition is satisfied (YES in S107), the second stop unit 15 stops the supply of power to the second load 32 (S109). Then, the second supply unit 16 determines whether or not the second supply condition (here, the condition B-1: the door has shifted from the “locked” state to the “unlocked” state) is satisfied. (S111). When it is determined that the second supply condition is not satisfied (NO in S111), the process is in a standby state. When it is determined that the second supply condition is satisfied (YES in S111), the second supply unit 16 starts supplying power to the second load 32 (S113).

  In the case of NO in step S107 or when the process of step S113 is completed, the first supply unit 14 causes the first supply condition (here, condition B-1 and condition B-2: ACC power supply to be “OFF”. It is determined whether or not (the state has shifted from the “ON” state to the “ON” state) (S115). If it is determined that the first supply condition is not satisfied (NO in S115), the process returns to step S107, and the processes after step S107 are repeatedly executed. When it is determined that the first supply condition is satisfied (YES in S115), the first supply unit 14 starts supplying power to the first load 31 (S117). And a process is returned to step S101 and the process after step S101 is repeatedly performed.

  In this way, the first load 31 is an ECU related to the traveling of the vehicle such as a power train ECU or a chassis ECU, and the second load 32 is a door peripheral ECU, instrument panel ECU, multimedia ECU, or the like. When the ECU is not related to traveling of the vehicle, power supply is stopped and started at an appropriate timing, so that unnecessary power consumption can be suppressed.

<Second Embodiment>
Next, the configuration of the load adjustment device according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a block diagram illustrating the configuration of the load adjustment device according to the second embodiment. The input device 2A according to the second embodiment is different from the input device 2 according to the first embodiment shown in FIG. 1 in that it further includes a door opening / closing sensor 24 and a key detection sensor 25. . In addition, the load adjustment device according to the second embodiment includes a load adjustment ECU 1A instead of the load adjustment ECU 1 as compared with the load adjustment device according to the first embodiment shown in FIG. Instead of the load 3 (= loads 31 and 32) according to the embodiment, it is different in that control is performed as to whether or not power is supplied to the load 3A (= loads 31A and 32A).

  The door opening / closing sensor 24 is a sensor that detects whether the door is open or closed. The door opening / closing sensor 24 outputs a signal indicating whether the door is open or closed to the load adjustment ECU 1A.

  The key detection sensor 25 is a sensor that detects whether a key is inserted into the key hole. The key detection sensor 25 outputs a signal indicating whether or not the key is inserted into the key hole to the load adjustment ECU 1A.

  In the second embodiment, a case where the key detection sensor 25 detects whether or not the key is inserted into the key hole will be described. However, the key detection sensor 25 detects whether or not the electronic key has been successfully authenticated. The form to do is also good. Further, the key detection sensor 25 may be configured to detect whether or not the key is inserted into the key hole and whether or not the authentication of the electronic key is successful.

  FIG. 6 is a block diagram illustrating an example of a functional configuration of the load adjustment ECU 1A. As shown in FIG. 6, the load adjustment ECU 1A functionally includes a first storage unit 11A, a second storage unit 12A, a first stop unit 13A, a first supply unit 14A, a second stop unit 15A, and a second storage unit. A supply unit 16A is provided.

  The load adjustment ECU 1A causes a microcomputer disposed in a proper position of the load adjustment ECU 1A to execute a control program stored in advance in a ROM (Read Only Memory) disposed in a proper position of the load adjustment ECU 1A. The microcomputer is functionally used as functional units such as the first storage unit 11A, the second storage unit 12A, the first stop unit 13A, the first supply unit 14A, the second stop unit 15A, and the second supply unit 16A. Make it work.

  11 A of 1st memory | storage parts (equivalent to a 1st memory | storage means) start the supply of the electric power to the 1st stop condition and the 1st load 31A which are the conditions which stop the supply of the electric power to 31 A of 1st loads. It is a function part which stores the 1st supply conditions which are conditions beforehand. The first stop condition stored in the first storage unit 11A is read by the first stop unit 13A, and the first supply condition stored in the first storage unit 11A is read by the first supply unit 14A.

  The second storage unit 12A (corresponding to the second storage unit) starts the second stop condition, which is a condition for stopping the supply of power to the second load 32A, and the supply of power to the second load 32A. It is a functional unit that stores in advance a second supply condition that is a condition. The second stop condition stored in the second storage unit 12A is read by the second stop unit 15A, and the second supply condition stored in the second storage unit 12A is read by the second supply unit 16A.

  FIG. 7 shows the first load 31A, the second load 32A, the first stop condition stored in the first storage unit 11A, the first supply condition, and the second stop condition stored in the second storage unit 12A. It is a chart which shows an example of 2 supply conditions. As shown in FIG. 7, the first load 31 </ b> A is an ECU or the like that takes a long time to start (= a long time to start), and specifically includes a multimedia ECU and a radio timepiece. Here, the multimedia system ECU includes a car navigation system, a television, and a radio control ECU.

  The second load 32A is an ECU that does not take a long time to start (= a short time required for the start-up), and specifically includes a door peripheral ECU and an instrument panel peripheral ECU. Here, the door peripheral ECU includes a door opening / closing control ECU and a power window control ECU. The instrument panel peripheral ECU includes a seat drive control ECU and an air conditioner control ECU.

The first stop condition is
Condition C-1: The ACC power source has shifted from the ON state to the OFF state. Condition C-2: The door on the driver's seat side has shifted from the “open” state to the “closed” state. The second stop condition is: In addition to the first stop condition (= condition C-1, condition C-2)
Condition C-3: The door is set to have shifted from the “unlocked” state to the “locked” state.

The first supply condition is
Condition D-1: It is set that the door on the driver's seat side has shifted from the “closed” state to the “open” state, and the second supply condition is in addition to the first supply condition (= condition D-1)
Condition D-2: The key is set to be inserted.

  In this case, the second stop condition is a condition that is satisfied only when the first stop condition is satisfied, and the second supply condition is the first supply condition. It is a condition that is satisfied only when the condition is satisfied.

  Returning to FIG. 6 again, the functional configuration of the load adjustment ECU 1A will be described. The first stop unit 13A (corresponding to the first stop means) determines whether or not the first stop condition (condition C-1 and condition C-2) shown in FIG. 7 is satisfied, and is determined to be satisfied. In this case, the functional unit stops the supply of power to the first load 31A. Here, the first stopping unit 13A determines whether or not the ACC power source has shifted from the ON state to the OFF state, and the driver side door has shifted from the “open” state to the “closed” state. If it is determined that the time has elapsed, the supply of power to the ECU or the like that takes a long time to start up the multimedia ECU, the radio timepiece, or the like is stopped.

  The second stop unit 15A (corresponding to the second stop unit) determines whether or not the second stop condition (condition C-1, condition A-2, condition C-3) shown in FIG. 7 is satisfied, This is a functional unit that stops the supply of power to the second load 32A when it is determined that the power is satisfied. Here, the second stopping unit 15A moves the ACC power source from the ON state to the OFF state, the driver seat side door from the “open” state to the “closed” state, and the door is “unlocked”. ”State is shifted to the“ locked ”state, and when it is determined that the state is shifted, the supply of electric power to the ECU having a short time required for starting the door peripheral ECU, the instrument panel peripheral ECU, etc. is stopped. .

  In this way, when the ACC power source shifts from the ON state to the OFF state and the door on the driver's seat shifts from the “open” state to the “closed” state, activation of the multimedia ECU, radio wave clock, etc. When the supply of electric power to an ECU or the like (= first load 31A) that takes a long time is stopped and the door is shifted from the “unlocked” state to the “locked” state, the door peripheral ECU and instrument panel peripheral ECU The supply of electric power to the ECU (= second load 32A) that takes a short time to start is stopped.

  Here, when the door shifts from the “unlocked” state to the “locked” state, it is determined that the driver has gone out of the vehicle, and the ECU (= second load 32A) that takes a short time to start is determined. Judged that power supply is no longer necessary. In this way, the power supply of the first load 31A and the second load 32A is stopped at an appropriate timing.

  The first supply unit 14A (corresponding to the first supply means) determines whether or not the first supply condition (condition D-1) shown in FIG. 7 is satisfied. This is a functional unit that starts supplying power to one load 31A. Here, the first supply unit 14A determines whether or not the door on the driver's seat has shifted from the “closed” state to the “open” state. Supply of electric power to an ECU or the like that takes a long time to start a clock or the like is started.

  The second supply unit 16A (corresponding to the second supply means) determines whether or not the second supply condition (condition D-1 and condition D-2) shown in FIG. 7 is satisfied, and is determined to be satisfied. In this case, the functional unit starts supplying power to the second load 32A. Here, the second stop portion 16A determines whether or not the door on the driver's seat side has transitioned from the “closed” state to the “open” state, and a key has been inserted. Then, supply of electric power to the ECU having a short time required for starting the door peripheral ECU, instrument panel peripheral ECU, etc. is started.

  In this way, when the door on the driver's seat side shifts from the “closed” state to the “open” state, the supply of power to the ECU or the like (= first load 31A) that takes a long time to start is started. Further, when the key is inserted, the supply of electric power to the ECU (= second load 32A) having a short time required for activation of the door peripheral ECU, the instrument panel peripheral ECU, etc. is started.

  Here, when the driver's seat side door shifts from the “closed” state to the “open” state, it is determined that the driver has boarded the vehicle, and the ECU or the like that takes a long time to start up (= first load 31A) ) Is determined to be necessary. Further, when the key is inserted, it is determined that the driver intends to start the engine and travel the vehicle, and power is supplied to the ECU (= second load 32A) that takes a short time to start. Judging that it became necessary. In this way, the supply of power from the first load 31A and the second load 32A is started at an appropriate timing.

  FIG. 8 is a flowchart showing an example of the operation of the load adjustment ECU 1A. First, the first stop unit 13A determines whether or not the ignition power is turned off (S201). If it is determined that the ignition power is not turned off (NO in S201), the process is set to a standby state. If it is determined that the ignition power supply has been turned off (YES in S201), the first stop section 13A causes the first stop condition (here, condition C-1: the ACC power supply has shifted from the ON state to the OFF state). Further, it is determined whether or not the condition C-2: the door on the driver's seat side has shifted from the “open” state to the “closed” state (S203). If it is determined that the first stop condition is not satisfied (NO in S203), the process is set to a standby state. When it is determined that the first stop condition is satisfied (YES in S203), the supply of power to the first load 31A is stopped by the first stop unit 13A (S205).

  Then, the second stop unit 15A causes the second stop condition (here, the condition C-1, the condition C-2, and the condition C-3: the door has shifted from the “unlocked” state to the “locked” state). ) Is established (S207). If it is determined that the second stop condition is not satisfied (NO in S107), the process proceeds to step S211. When it is determined that the second stop condition is satisfied (YES in S207), the supply of power to the second load 32A is stopped by the second stop unit 15A (S209). If NO in step S207 or if the process of step S209 ends, the first supply unit 14A causes the first supply condition (here, condition D-1: the door on the driver's seat side to be in the “closed” state). Is determined to be established (S211). If it is determined that the first supply condition is not satisfied (NO in S211), the process returns to step S207, and the processes after step S207 are repeatedly executed. When it is determined that the first supply condition is satisfied (YES in S211), the first supply unit 14A starts to supply power to the first load 31A (S213).

  Then, the second supply unit 16A determines whether or not the supply of power to the second load 32A is stopped (S215). If it is determined that the supply of power to the second load 32A is not stopped (NO in S215), the process returns to step S201, and the processes after step S201 are repeatedly executed. When it is determined that the supply of power to the second load 32A is stopped (YES in S215), the second supply unit 16A causes the second supply condition (here, the condition D-1 and the condition D-). (2: Key inserted) is determined (S217). If it is determined that the second supply condition is not satisfied (NO in S217), the process is set to a standby state. When it is determined that the second supply condition is satisfied (YES in S217), the second supply unit 16A starts supplying power to the second load 32A (S219). And a process is returned to step S201 and the process after step S201 is repeatedly performed.

  In this way, the first load 31A is an ECU or the like that takes a long time to start up the multimedia system ECU, the radio timepiece, etc., and the second load 32A takes a time to start up the door peripheral ECU, instrument panel peripheral ECU, or the like. In the case of a short ECU, power supply is stopped and started at an appropriate timing, so that unnecessary power consumption can be suppressed.

The load adjustment device according to the present invention is not limited to the first embodiment and the second embodiment, and may be the following modes.
(A) In the first embodiment, the load adjustment ECU 1 functionally includes a first storage unit 11, a second storage unit 12, a first stop unit 13, a first supply unit 14, a second stop unit 15, Although the case where the 2 supply part 16 grade | etc., Is demonstrated, the 1st memory | storage part 11, the 2nd memory | storage part 12, the 1st stop part 13, the 1st supply part 14, the 2nd stop part 15, and the 2nd supply part 16 was demonstrated. Of these, at least one functional unit may be realized by hardware such as an electric circuit.

  Similarly, in the second embodiment, the load adjustment ECU 1A functionally includes a first storage unit 11A, a second storage unit 12A, a first stop unit 13A, a first supply unit 14A, a second stop unit 15A, Although the case where the two supply units 16A and the like are provided has been described, the first storage unit 11A, the second storage unit 12A, the first stop unit 13A, the first supply unit 14A, the second stop unit 15A, and the second supply unit 16A. Of these, at least one functional unit may be realized by hardware such as an electric circuit.

  (B) In the first embodiment and the second embodiment, the loads 3, 3A are classified into two loads (first load 31, 31A and second load 32, 32A), respectively. As described above, the load 3, 3A may be classified into three or more loads. In this case, finer control is possible, and unnecessary power consumption can be effectively suppressed.

  (C) In the first embodiment, the load 3 is classified into the first load 31 and the second load 32 based on whether or not the load 3 is related to the traveling of the vehicle. In the second embodiment, the load 3A is The case where the load is classified into the first load 31A and the second load 32A based on the length of time required for starting has been described. However, the load is divided into the two first loads, the first load, and the second load based on other conditions. A form classified into two loads may be used.

  The present invention can be applied to, for example, a load adjustment device that adjusts a load to be supplied with electric power from a storage battery in a state where the vehicle is mounted on an automobile and an ignition power source is turned off.

1, 1A Load adjustment ECU (load adjustment device)
11, 11A 1st memory | storage part (1st memory | storage means)
12, 12A Second storage section (second storage means)
13, 13A 1st stop part (1st stop means)
14, 14A 1st supply part (1st supply means)
15, 15A 2nd stop part (2nd stop means)
16, 16A 2nd supply part (2nd supply means)
2, 2A Input device 21 Storage battery 22 ACC switch 23 Door lock sensor 24 Door open / close sensor 25 Key detection sensor 3, 3A Load 31, 31A First load 32, 32A Second load

Claims (3)

A load adjustment device that adjusts a load to be supplied with power from a storage battery in a state where the ignition power source is turned off and mounted on a vehicle,
A first stop condition that is a preset condition for stopping the supply of power to the first load and a first supply condition that is a condition for starting the supply of power to the first load are stored in advance. Storage means;
A second stop condition, which is preset and is a condition for stopping the supply of power to the second load, which is different from the first load, and a second condition for starting the supply of power to the second load. Second storage means for storing supply conditions in advance;
Determining whether or not the first stop condition is satisfied, and when it is determined that the first stop condition is satisfied, first stop means for stopping the supply of power to the first load;
A first supply means for determining whether or not the first supply condition is satisfied, and starting supply of electric power to the first load when it is determined that the first supply condition is satisfied;
Determining whether or not the second stop condition is satisfied, and when it is determined that the second stop condition is satisfied, second stop means for stopping the supply of power to the second load;
A load adjusting device comprising: a second supply unit that determines whether or not the second supply condition is satisfied, and starts supplying power to the second load when it is determined that the second supply condition is satisfied. The second stop condition is a condition that is satisfied only when the first stop condition is satisfied,
The load adjustment device according to claim 1, wherein the first supply condition is a condition that is satisfied only when the second supply condition is satisfied. The second stop condition is a condition that is satisfied only when the first stop condition is satisfied,
The load adjusting device according to claim 1, wherein the second supply condition is a condition that is satisfied only when the first supply condition is satisfied.

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