JP2022164166A - Control device of vehicle and vehicle system - Google Patents

Abstract

To provide a control device of a vehicle which regularly performs charging of a battery for rewriting of a program without predicting a residual capacity or charging rate of the battery.SOLUTION: A control device of a vehicle comprises: charging time determination means 201 which determines that a battery 111 is not charged for the first set time T1; battery charging instruction means 203 which gives instructions to charge the battery 111 for the second set time T2 with the power for rewriting a program of an electronic control device when the determination means 201 determines that the battery is not charged for the first set time T1; and battery charging means 205 which executes charging of the battery according to the instructions from the battery charging instruction means 203.SELECTED DRAWING: Figure 2

Description

The present application relates to a vehicle control device and a vehicle system.

2. Description of the Related Art Vehicles in recent years are equipped with a large number of electronic control units for controlling the vehicle, and various functions are realized. Furthermore, with the advent of connected cars and vehicles capable of autonomous driving, even more functions have been added than ever before, making it necessary to upgrade them.

In conventional vehicles, the electronic control unit that controls the vehicle has been used in relatively long cycles. However, with the advent of connected cars and vehicles capable of autonomous driving, the introduction of new functions, maintenance, version upgrades, and security measures have become necessary, and it has become necessary to update (reprogram) the program of the electronic control unit. . Therefore, recently, updating of the control device by reprogramming OTA (Over The Air) by wireless communication has become popular.

To perform OTA reprogramming, battery power is required to perform the rewrite. Battery power for rewriting uses the battery mounted on the vehicle. Therefore, if the battery mounted on the vehicle is not sufficiently charged, the rewriting may fail in the middle and the writing may not be performed correctly.

For example, the technology disclosed in Patent Document 1 predicts the state of the battery voltage after receiving a request to update the program of the electronic control unit until the vehicle reaches a predetermined location, and charges the battery if necessary. is carried out, and battery power for rewriting is secured by updating the program of the electronic control unit when it arrives at a predetermined place.

JP 2020-13444 A

However, in the technique disclosed in Patent Document 1, if the timing at which the update request for the program of the electronic control unit is received is a timing in which the vehicle is traveling and it does not take much time to reach the scheduled location, the program update request is relatively small. Although the program can be updated at an early timing, charging control is not performed when the vehicle is stopped (including parking), so the opportunity to update the program is postponed.

Further, in the technique disclosed in Patent Document 1, the remaining capacity or the charging rate of the battery is predicted, and the battery is charged according to the state to perform rewriting. The vehicle disclosed in Patent Document 1 is a vehicle equipped with a lithium ion battery, and the lithium ion battery is charged with electric power. Many of the lithium-ion batteries in hybrid vehicles are installed at the bottom of the vehicle, and the batteries are very large. In this case, genuine products are often used, and the characteristics of the battery do not change. Therefore, the accuracy of predicting the remaining capacity or charging rate of the battery does not decrease, and it is relatively easy to predict the state of the battery.

In comparison, many gasoline engine vehicles are equipped with only lead batteries, and because they are smaller than lithium-ion batteries, the batteries can be easily replaced by the user, and non-genuine products are often used. . If the battery is replaced with a non-genuine battery, the characteristics of the battery may differ, and the accuracy of predicting the remaining capacity or charging rate of the battery may be lowered, and the battery may not be charged correctly. In addition, it is said that it is difficult to predict the remaining capacity or charging rate of a lead-acid battery compared to a lithium-ion battery.

The present application discloses a technique for solving the above-described problems. It is an object of the present invention to provide a vehicle control device and a vehicle system for periodically charging a battery for program rewriting.

The vehicle control device disclosed in the present application is a vehicle control device equipped with an electronic control device capable of rewriting a program,
The electronic control unit comprises charging time determining means for determining that the battery has not been charged for a first set time, and if the charging time determining means determines that the battery has not been charged for the first set time, the program and battery charging instruction means for instructing the battery to be charged with electric power for rewriting for a second set time; and battery charging means for charging the battery in accordance with the instruction of the battery charging instruction means. Characterized by

According to the vehicle control device disclosed in the present application, by charging the battery at a predetermined regular timing before the timing of rewriting the program for controlling the battery of the vehicle, reprogramming can be performed. Battery power can be reserved.

1 is a configuration diagram showing a vehicle system including a vehicle control device according to Embodiment 1; FIG. 1 is a block diagram showing the configuration and functions of a vehicle control device according to Embodiment 1; FIG. 4 is a flow chart showing the operation of determining the execution of reprogramming battery charging control according to Embodiment 1; 4 is a flowchart showing the operation of reprogramming battery charge determination according to the first embodiment; 8 is a diagram showing an example of a second set time update value map used by second set time updating means according to Embodiment 1. FIG. 4 is a timing chart showing control operations of the vehicle control device according to Embodiment 1; 2 is a block diagram showing the configuration and functions of a vehicle control device according to Embodiment 2. FIG. FIG. 10 is a flow chart showing an operation for judging execution of reprogramming battery charging date/time judgment according to Embodiment 2; FIG. 10 is a flow chart showing the operation of determining the charging date and time of the reprogramming battery according to the second embodiment; 9 is a timing chart showing control operations of the vehicle control device according to the second embodiment;

Preferred embodiments of a vehicle control device and a vehicle system according to the present application will be described below with reference to the drawings. In each figure, the same or corresponding members and parts are denoted by the same reference numerals. In addition, in the following, when reprogramming a vehicle equipped with a lead battery, by charging the battery power periodically so as not to run out of battery power, the program can be rewritten in any state of the vehicle. An embodiment of a control that can ensure battery power of .

Embodiment 1.
FIG. 1 is a configuration diagram showing a vehicle system including a vehicle control device according to Embodiment 1. As shown in FIG. As shown in FIG. 1, the vehicle system including the vehicle control device according to the first embodiment is equipped with an engine 101 that operates by combustion of fuel and an alternator 102 that is used as a power generator. Note that the crank pulley 103 of the engine 101 and the pulley 104 of the alternator 102 are connected via a belt 105 . The power of engine 101 is transmitted to tires 109 connected to drive shaft 108 via transmission 106 and differential gear 107 .

The engine 101 is controlled by an engine control electronic control unit (hereinafter abbreviated as an engine ECU) 110 . The engine ECU 110 is composed of a microprocessor or the like, and performs fuel control of the engine 101 and the like.

Alternator 102 is connected to lead battery 111 . The alternator 102 is generated by combustion of the engine 101 and supplies power to the lead battery 111 .

The lead battery 111 charges the electric power generated by the alternator 102 by combustion of the engine 101, and discharges when the engine 101 needs to be started by a starter (not shown) or the auxiliary machine 112 needs to be driven. A current sensor 113 is connected to the lead battery 111 to detect the current of the lead battery 111 , and the detected signal is input to an electronic control unit for vehicle control (hereinafter abbreviated as vehicle ECU) 114 . The current of the lead battery 111 is used for estimating the state of charge of the battery.

Auxiliary machine 112 is an electrical component that uses the power of lead battery 111 . For example, there are air conditioners or headlights. A current sensor (not shown) is connected to auxiliary machine 112 , and the detected current consumption of auxiliary machine 112 is received by vehicle ECU 114 .

The vehicle ECU 114 includes a CPU (not shown) that performs arithmetic processing, a ROM (not shown) that stores program data or fixed value data, and a RAM (not shown) that updates and sequentially rewrites stored data. , and a plurality of microcomputers (not shown) having a backup RAM (not shown) that retains stored data even when the power supply of the vehicle ECU 114 is shut off. We have a program to make it happen.

One of them is a microcomputer that is always energized and operating even when the power source of the vehicle is off. In addition, the vehicle ECU 114 has an external communication mechanism 115 capable of adding or updating a program from outside the vehicle, so that reprogramming can be performed through communication from outside the vehicle. The vehicular ECU 114 is also connected to microcomputers of other ECUs (not shown) via in-vehicle communication lines such as CAN, so that the programs in the microcomputers of other ECUs can be reprogrammed.

In order to charge the battery power necessary for reprogramming, the microcomputer, which is always energized even when the vehicle power source of the vehicle ECU 114 is off, is charged with the charging time determining means 201 shown in FIG. Programs or fixed value data relating to the time updating means 202, the battery charging instructing means 203, the second set time updating means 204, and the battery charging means 205 are stored in the ROM. It should be noted that the ROM also stores a program or fixed value data relating to the date-and-time-specified charging determination means, which will be described later in Embodiment 2. FIG.

FIG. 2 is a block diagram showing the configuration and functions of the vehicle control apparatus according to Embodiment 1. The microcomputer of the vehicle ECU 114 stores the above-described means. Each unit shown in FIG. 2 will be described below.

The charging time determining means 201 shown in FIG. 2 determines that the lead battery 111 has not been charged for the first set time. That is, the charging time determining means 201 determines the elapsed time TBatt [h] from the time when the lead battery 111 completed the previous battery charging for reprogramming, the first set time T1 [h], and the first set time T1 [ h] is used to determine whether to charge the battery power for reprogramming. A specific calculation method will be described later with reference to the flowchart of FIG.

The first set time update means 202 calculates a value TUpdate1[h] for updating the interval TPeriod between the last two reprogramming operations used in the charge time determination means 201 . A specific calculation method will be described later with reference to the flowchart of FIG.

The battery charging instruction means 203 instructs the lead battery 111 to be charged according to the result determined by the charging time determination means 201, and sets the second set time T2 [h] and the second set time T2 [h]. The value TUpdate2[h] to update is used to indicate that battery charging for reprogramming should be stopped. A specific calculation method will be described later with reference to the flowchart of FIG.

The second set time update means 204 calculates a value TUpdate2[h] for updating the second set time T2[h] used in the battery charging instruction means 203 . A specific calculation method will be described later with reference to the flowchart of FIG.

The battery charging means 205 charges the battery according to the instruction from the battery charging instruction means 203 .

In the following, in the vehicle control device shown in FIG. 1, the remaining capacity or the charging rate of the lead battery 111 is predicted so that the lead battery 111 does not run out of power during reprogramming of the vehicle equipped with the lead battery 111. First, the control for charging the lead battery 111 in advance will be described with reference to the flow charts of FIGS. 3 and 4. FIG.

The flow chart of FIG. 3 shows the details of the execution determination of the reprogramming battery charge control. The execution determination of the reprogramming battery charging control is executed as a subroutine within the main routine at a predetermined calculation cycle (for example, 100 ms) in the microcomputer, which is always energized and operated even when the vehicle power supply is off.

In step S301 of FIG. 3, it is determined whether the vehicle power supply is off. If the vehicle power supply is off, the process proceeds to step S302. If the vehicle power supply is on, the process proceeds to the reprogramming battery charging determination flow of FIG.

In step S302, a flag SWUbatt is used to determine whether the reprogramming battery charging control is to be operated even when the vehicle is powered off. Specifically, when SWUbatt=1, this reprogramming battery charge determination is performed, and when SWUbatt=0, the flow is terminated without performing this reprogramming battery charge determination. The flag SWUbatt changes to 1 or 0 when the user turns on or off a button switch mounted on the vehicle, for example. However, it is not limited to the button type switch, and may be set in advance in the program.

Next, the flow of reprogramming battery charge determination will be described with reference to FIG.
The flowchart in FIG. 4 shows the flow of reprogramming battery charge determination. In step S303 of FIG. 4, the charging time determining means 201 determines whether or not to charge the battery power for reprogramming using the elapsed time TBatt [h] from the time when the charging of the battery for reprogramming was completed last time. implement.

Specifically, when the first set time T1 [h]<elapsed time TBatt [h], it is determined that it is the reprogramming battery charging time. If the determination of the charging time is established in step S303, the process proceeds to step S304. If the determination of the charging time is unsatisfactory, the process proceeds to step S310. Note that the first set time T1 [h] used in this embodiment is calculated from the following equation (1). The first set time T1[h] takes a fixed value K1[h] when the value of TUpdate1[h] is 0 immediately after a battery reset, and TUpdate1[h] otherwise. In the present embodiment, the first set time T1 [h] is calculated by the formula (1), but any formula that updates the first set time T1 [h] is not limited to this formula. do not have.
T1[h]=(K1[h] or TUpdate1[h]) (1)

The fixed value K1[h] in the above equation (1) arbitrarily sets a fixed time during which reprogramming is assumed. For example, if periodic rewriting is performed once a month, the number is set to 744 (=31 days×24 hours). TUpdate1[h] in equation (1) is calculated by the following equation (2) based on the interval TPeriod at which reprogramming was performed two times in the past. Note that equation (2) corresponds to the first set time update means 202, which is updated in step S309 of the flowchart of FIG. 4, which will be described later.
TUpdate1←(TUpdate1+TPeriod)/2 (2)
In this embodiment, the first set time T1[h] is updated by the above calculation, but other means than the above may be used.

In step S310, if the result of step S303 is not established, the elapsed time TBatt from the time when the battery charging for reprogramming was completed last time is updated by adding the time corresponding to the predetermined period of the main routine. When the update of the elapsed time TBatt from the time when the charging of the battery for reprogramming was completed last time is completed, this flow ends.

In step S304, a reprogramming battery charge time determination flag FBatt is set to 1 when the result of step S303 is established.

In step S305, an instruction to charge the lead battery 111 is issued by the battery charging instruction means 203. FIG. Specifically, when the reprogramming battery charging time determination flag FBatt is 1, the reprogramming charging execution instruction flag FActBatt is set to 1. Also, TCount[h] representing the charging time is updated by adding the time for a predetermined period of the main routine.

In step S306, the engine ECU 110 is activated in response to an instruction from the battery charging instruction means 203, the engine 101 is operated under the control of the engine ECU 110, and the alternator 102 is rotated to generate electric power for reprogramming. The lead battery 111 is charged.

In step S307, it is determined whether the charging time TCount[h] has become longer than the second set time T2[h]. If the determination is established, the process proceeds to step S308. If the determination is unsuccessful, this flow ends. Note that the second set time T2 [h] used in this embodiment is calculated from the following equation (3) and updated in step S309 of the flowchart of FIG. 4, which will be described later. In the present embodiment, the second set time T2[h] is calculated by the following formula (3), but any formula that updates the second set time T2[h] is not limited to this formula. no problem.
T2[h]=K2[h]+TUpdate2[h] (3)

The fixed value K2[h] in the above equation (3) is arbitrarily set in advance as the time during which the battery power used for reprogramming can be charged. For example, it is set to 1 when the battery power required for periodic reprogramming is 1 hour.

Also, TUpdate2[h] in the above equation (3) is the battery charge time correction amount, and as shown in the map of FIG. It is calculated by the formula (4). Here, the average value IBattAve [Ah] of the battery amount used for reprogramming is the average value of the battery current measured from the battery current sensor during the past reprogramming.
TUpdate2=MAP(IBattAve[Ah]) (4)
The above equation (4) corresponds to the second set time updating means 204 . Note that the means for updating the second set time T2[h] may be other means than those described.

In step S308, if it is determined in step S307 that the charging of the battery for reprogramming has ended, the reprogramming battery charging time determination flag FBatt and the reprogramming charging execution instruction flag FActBatt are set to 0, and the engine ECU 110 is instructed to charge the battery. to stop charging the reprogramming battery.

In step S309, when charging of the battery for reprogramming is completed, the elapsed time TBatt[h] from the previous completion of battery charging for reprogramming and the charging time TCount[h] are initialized to zero. Furthermore, the first set time T1 and the second set time T2 are updated, and the flow ends. The elapsed time TBatt[h] and the charging time TCount[h] are used for the next reprogramming battery charge determination.

Next, control operation of the vehicle control apparatus according to Embodiment 1 described above will be described with reference to FIG. FIG. 6 is a timing chart showing control operations of the vehicle control device according to the first embodiment.
In FIG. 6, a flag SWUbatt, an elapsed time TBatt [h] from the completion of the previous reprogramming battery charging, a first set time T1 [h], a reprogramming battery charging time determination flag FBatt, and a reprogramming charging FIG. 5 shows a timing chart of the execution instruction flag FActBatt, the charging time TCount[h], the second set time T2[h], and the remaining battery capacity. FIG. 6 shows the state when the power source of the vehicle is turned off. The first half shows the timing chart when the flag SWUbatt=1, and the second half shows the timing chart when the flag SWUbatt=0.

As shown in FIG. 6, at the timing A when the charging of the battery for reprogramming last time is completed, the charging of the battery for reprogramming last time is completed, and the values of the first set time T1 [h] and the second set time T2 [h] are Updated. Also, at timing A, the elapsed time TBatt[h] and the charging time TCount[h] from the previous completion of battery charging for reprogramming are reset to 0, and the reprogramming battery charging time determination flag FBatt and reprogramming The charging execution instruction flag FActBatt is 0. The elapsed time TBatt [h] is updated by adding a predetermined calculation cycle (for example, 100 ms) of the main routine from the timing A when the battery charging for the previous reprogramming is completed, and the battery charging for the previous reprogramming is performed. Elapsed time from completion is measured.

After completion of charging at timing A, reprogramming is performed and the battery capacity is reduced accordingly. At timing B, the elapsed time TBatt[h] from the completion of the previous reprogramming battery charging becomes longer than the first set time T1[h], and the reprogramming battery charging time determination flag FBatt is set to 1. When the reprogramming battery charge time determination flag FBatt is set to 1, the reprogramming charge execution instruction flag FActBatt is also set to 1. Then, the engine ECU 110 is activated, the engine 101 is operated under the control of the engine ECU 110, and the alternator 102 is rotated to generate power and charge the lead battery 111 as power for reprogramming. At this time, while the lead battery 111 is being charged, the charging time TCount[h] is updated by adding time for a predetermined period of the main routine.

At timing C, the charging time TCount [h] becomes longer than the second set time T2 [h]. The instruction to charge the battery to the engine ECU 110 is stopped, and the charging of the battery for reprogramming ends. At this time, the elapsed time TBatt[h] and the charging time TCount[h] from the completion of the previous reprogramming battery charging are initialized to 0 and used for the next reprogramming battery charge determination. Furthermore, the first set time T1 and the second set time T2 are also updated. Note that reprogramming is performed after the completion of charging at timing C, and the battery capacity is reduced accordingly.

When the switch of the vehicle body is switched at the timing D and the flag SWUbatt becomes 0, the reprogramming battery charge determination is not performed when the vehicle power supply is turned off. Even at timing E, which is longer than one set time T1 [h], battery charging for reprogramming is not performed.

When the vehicle switch or the like is pressed again at timing F and the flag SWUbatt becomes 1, the reprogramming battery charge determination is established after a predetermined cycle of the next main routine even when the vehicle power is off, and the reprogramming battery is charged. to start.

As described above, according to the vehicle control apparatus according to the first embodiment, the battery power for reprogramming is ensured by charging the battery at a preset periodic timing before the programming rewriting timing. can do.

Also, by learning and correcting the periodic timing for charging the battery based on past program rewriting times, it is possible to more reliably secure battery power during reprogramming even if the program rewriting times change. . Furthermore, by learning and correcting the time for continuing battery charging based on the amount of battery required for past program rewriting, even if the program rewriting time changes, the battery power for reprogramming can be ensured more reliably. can be done. By enabling the reprogramming battery to be charged even when the vehicle power supply is turned off, it is possible to reliably secure the battery power for programming even when the vehicle is parked, for example.

In addition, by optionally disabling the reprogramming battery charge control when the vehicle power is off, it is possible to prevent the exhaust gas emitted from the engine when charging the battery from filling a closed space such as a garage. .

In the above embodiment, the embodiment using the alternator 102 has been described, but the same effect can be obtained by using a device capable of generating power with engine power instead of the alternator 102, such as a motor generator.

Embodiment 2.
Next, a vehicle control device and a vehicle system according to Embodiment 2 will be described. A configuration diagram showing a vehicle system including a vehicle control device according to Embodiment 2 and calculation contents are the same as those in Embodiment 1, so illustration and description thereof will be omitted.
Further, in the following, in the vehicle control device in the vehicle system shown in FIG. An embodiment capable of securing battery power for rewriting will be described.

FIG. 7 is a block diagram showing the configuration and functions of a vehicle control device according to Embodiment 2. As shown in FIG.
In order to charge the battery power necessary for reprogramming, the microcomputer, which is always energized and operating even when the vehicle power source of the vehicle ECU 114 is turned off, is provided with the battery charging instruction means 203 shown in FIG. Programs or fixed value data relating to the time updating means 204, the battery charging means 205, and the date-specified charging determination means 206 are stored in the ROM.
The configurations and functions of the battery charging instruction means 203, the second set time updating means 204, and the battery charging means 205 are the same as those in the first embodiment, so the date-and-time specified charging determination means 206 shown in FIG. 7 will be described below. do.

The date-and-time-specified charging determination means 206 determines to start charging the battery when the set battery power charging date and time is reached. That is, the date-and-time-specified charging determining means 206 uses the current time TBatt2 to determine whether it is the date and time for charging the battery power for reprogramming. A specific calculation method will be described later with reference to the flowchart of FIG.

The flowchart of FIG. 8 shows the details of the execution determination of the reprogramming battery charging date/time determination. The flowchart of FIG. 8 is the same as that of FIG. 3 except that the reprogramming battery charging control execution determination routine of FIG. 3 is replaced with a reprogramming battery charging date and time determination routine. omitted.

Next, the flow of determining the reprogramming battery charging date and time will be described with reference to FIG. The flowchart of FIG. 9 shows the flow of determination of the reprogramming battery charging date and time. Only steps S403 and S409 in FIG. 9 will be described below, and steps S404 to S408 are the same as steps S304 to S308 in FIG. 4, so description thereof will be omitted.

In step S403 of FIG. 9, the current time TBatt2 is used to determine whether or not the battery power for reprogramming is to be charged by the date-and-time specified charging determining means 206. FIG.
Specifically, when the current time TBatt2 becomes after the preset battery power charging date and time T3 for reprogramming, the battery charging date and time is determined. If the date and time specified charging determination is established, the process proceeds to step S404. If the date-and-time-specified charging determination is not established, it is determined that the lead battery 111 does not need to be charged, and this reprogramming battery charging date and time determination ends. It should be noted that the battery power charging date and time T3 for reprogramming used in the second embodiment must be arbitrarily set in advance by the user or the dealer. For example, it is possible to set the year, month, and day first, and then set the date one month later. In addition, it is also possible to specify, for example, 12:00 on the first day of every month. As for the update at that time, when step S403 is established, T3 is updated to the next battery power charging date and time.

In step S409, when the charging of the battery for reprogramming ends, the charging time TCount is set to 0, and the flow ends. The charging time TCount is used when determining the next reprogramming battery charging date and time.

Next, control operation of the vehicle control apparatus according to Embodiment 2 described above will be described with reference to FIG. 10 . FIG. 10 is a timing chart showing control operations of the vehicle control device according to the second embodiment.
10, flag SWUbatt, current time TBatt2, reprogramming battery power charging date and time T3, reprogramming battery charging time determination flag FBatt, reprogramming charging execution instruction flag FActBatt, charging time TCount[h], second A timing chart of the set time T2 [h] and the remaining battery capacity is shown. It should be noted that FIG. 10 assumes that the power source of the vehicle is turned off, and shows the timing chart when the flag SWUbatt=1.

At timing A in FIG. 10, current time TBatt2>reprogramming battery power charging date and time T3, so 1 is set to the reprogramming battery charging time determination flag FBatt. When the reprogramming battery charge time determination flag FBatt is set to 1, the reprogramming charge execution instruction flag FActBatt is also set to 1. The engine ECU 110 is activated, the engine 101 is operated under the control of the engine ECU 110, and the alternator 102 is rotated to generate power and charge the lead battery 111 as power for reprogramming. At this time, while the lead battery 111 is being charged, the charging time TCount[h] is updated by adding time for a predetermined period of the main routine.

At timing B, the charging time TCount [h] becomes longer than the second set time T2 [h], so the reprogramming charging execution instruction flag FActBatt and the reprogramming battery charging time determination flag FBatt are set to 0. The instruction to charge the battery to the engine ECU 110 is stopped, and the charging of the battery for reprogramming ends. At this time, the charging time TCount[h] is initialized to 0 and used to determine the next reprogramming battery charging date and time. In addition, the second set time T2 and the battery power charge date and time T3 for reprogramming are also updated. Note that reprogramming is performed after completion of charging at timing B, and the battery capacity is reduced accordingly.

As described above, according to the vehicle control apparatus according to the second embodiment, the battery power for reprogramming can be secured by charging the battery at the preset designated date and time before the programming rewrite timing. can be done.

Also, by learning and correcting the time to continue charging the battery based on the amount of battery required to rewrite the program in the past, it is possible to more reliably secure the battery power during reprogramming even if the program rewrite time changes. can.

Furthermore, the user or the dealer can arbitrarily update the specified date and time for performing the reprogramming battery charge control, thereby ensuring battery power for reprogramming while satisfying the convenience of the user or the dealer. By enabling the reprogramming battery to be charged even when the vehicle is powered off, the reprogramming battery power can be reliably secured even when the vehicle is parked, for example.

In addition, by optionally disabling the reprogramming battery charge control when the vehicle power is off, it is possible to prevent the exhaust gas emitted from the engine when charging the battery from filling a closed space such as a garage. .

As described above, in the above embodiment, a gasoline engine vehicle has been illustrated and explained, but the present application can be applied to any vehicle that rewrites a program using the power of a lead battery, such as a hybrid vehicle.

Also, while this application has described various exemplary embodiments and examples, various features, aspects, and functions described in one or more of the embodiments may vary from particular embodiment to specific embodiment. The embodiments can be applied singly or in various combinations. Therefore, countless modifications not illustrated are envisioned within the scope of the technology disclosed in the present application. For example, modification, addition or omission of at least one component, extraction of at least one component, and combination with components of other embodiments shall be included.

101 engine, 102 alternator, 103 crank pulley, 104 pulley, 105 belt, 106 transmission, 107 differential gear, 108 drive shaft, 109 tire, 110 engine ECU, 111 lead battery, 112 accessory, 113 current sensor, 114 vehicle ECU, 115 external communication mechanism, 201 charging time determining means, 202 first set time updating means, 203 battery charge instructing means, 204 second set time updating means, 205 battery charging means, 206 date and time specified charging determining means.

The vehicle control device disclosed in the present application is a vehicle control device equipped with an electronic control device capable of rewriting a program,
The electronic control unit includes charging time determination means for determining that the battery has not been charged in a first set time that has elapsed since the previous battery charging for reprogramming was completed ; a battery charge instructing means for instructing the battery to be charged with power for rewriting the program for a second set time when it is determined that the battery is not charged within a set time; and instructions from the battery charge instructing means. and battery charging means for charging the battery in response to.

Claims (8)

A control device for a vehicle equipped with an electronic control device capable of rewriting a program,
The electronic control unit includes charging time determination means for determining that the battery has not been charged for a first set time;
battery charging instruction means for instructing the battery to be charged with power for rewriting the program for a second set time when the charging time determination means determines that the battery has not been charged for the first set time;
and battery charging means for charging the battery in accordance with an instruction from the battery charging instruction means. A control device for a vehicle equipped with an electronic control device capable of rewriting a program,
The electronic control unit includes date-and-time-specified charging determination means for determining whether to start charging the battery after a set battery power charging date and time;
battery charging instruction means for instructing the battery to be charged with power for rewriting the program for a second set time when the date and time specified charging determination means determines that charging should be started;
and battery charging means for charging the battery in accordance with an instruction from the battery charging instruction means. 2. The vehicle control apparatus according to claim 1, further comprising first set time updating means for updating said first set time based on a past program rewrite timing. 4. The apparatus according to any one of claims 1 to 3, further comprising second set time update means for storing a battery amount required for program rewriting in the past and updating the second set time according to the stored battery amount. 1. The control device for a vehicle according to claim 1. 3. The vehicle control apparatus of claim 2, wherein the battery power charging date and time is updateable. 6. The vehicle control device according to any one of claims 1 to 5, wherein the charging control of the battery is possible even when the power source of the vehicle is off. 7. The control device for a vehicle according to claim 1, further comprising means for invalidating the charging control of the battery when the vehicle is powered off. A control device for a vehicle according to any one of claims 1 to 7;
an engine operated by combustion of fuel;
a power generator that generates power by the power of the engine;
a battery that charges the power generated by the power generation device;
A vehicle system comprising:

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