JP5262597B2 - Electric vehicle charging control device - Google Patents

Description

  The present invention relates to a charging control device for an electric vehicle.

2. Description of the Related Art Conventionally, a technique for notifying a user that an abnormality has occurred when charging a battery mounted on an electric vehicle has been developed. In addition, the following patent document 1 is mentioned as a literature which shows an example of such a technique.
In the technique disclosed in Patent Document 1, the red lamp blinks when the charging device is out of order or when the connection state of the charging device is abnormal.
Japanese Patent No. 3252535

However, the abnormality in charging is not limited to the case caused by the failure of the charging device as disclosed in Patent Document 1.
That is, the battery of the electric vehicle may be charged in a facility for charging the battery for the electric vehicle (for example, a facility such as a charging station instead of a conventional gas station; hereinafter referred to as a charging-only facility). For example, the battery of the electric vehicle may be charged at the home of the user of the electric vehicle.

In the former case, that is, from a charging-only facility, charging will normally be performed using electric power suitable for charging an electric vehicle battery.
However, as in the latter case, when a battery is charged using a general household power source, there may be a case where charging using the ideal power as described above cannot be performed.
The problem is that when the inventor assigns a plurality of electric vehicles to a plurality of users and conducts a test operation, the battery is charged despite being charged for a predetermined period (for example, about 7 hours; full charge period). The phenomenon that the battery is not fully charged or the battery cannot be fully charged unless it is charged for a longer period than the full charge period is due to the occurrence of some electric vehicles. It was issued.

At this time, although the inventor investigated in detail the troubles of the charger and the battery, no abnormality was found, and a great deal of effort was invested in investigating the cause.
When the inventor continued the investigation, it was found that there was a relationship between the electric vehicle in which the above phenomenon occurred and the place where the electric vehicle is charging.
In other words, when the battery is charged at a certain user's home, the above phenomenon occurs, but when charging is performed at a place other than the user's home, the above phenomenon does not occur. .

  Accordingly, the inventor assumed that the power input to the charger may not be appropriate, and proceeded with the investigation. The user connected an electrical outlet at home using an extension cable (so-called extension cord). I found out that it was extended. That is, the battery of the electric vehicle is charged by connecting the electric outlet of the extension cord and the charging socket of the electric vehicle with the charging cable.

Further, the inventors further investigated that it was measured that a voltage (about 100V) and a current (about 15A) in accordance with the standard were output at the electrical outlet in the house, but the electrical outlet of the extension cord It was found that the voltage was about 10V lower than the standard.
It is extremely rare for a household power supply to be equipped with a device that displays the output voltage or output current, which makes it difficult for users of electric vehicles to know the state of the power supply environment that is charging. Usually it is.

That is, due to the unfavorable power supply environment, even if charging is not performed properly, the user is likely to misunderstand that the electric vehicle itself is a failure.
In addition to charging using an extension cord, the voltage may be lower than the standard even when charging a plurality of electric vehicles or supplying power to home appliances at the same time.
The present invention has been devised in view of such problems, and an object of the present invention is to provide a charging control device for an electric vehicle capable of notifying a user of a charging state of the electric vehicle according to a power supply environment.

In order to achieve the above object, a charging control device for an electric vehicle according to the present invention (Claim 1) is a charging control device for an electric vehicle equipped with power storage means that is charged by input power supplied from a power source. A charger for charging the power storage means with the input power; an input voltage detecting means for detecting a voltage of the input power supplied to the charger; and an input voltage detected by the input voltage detecting means. Charger control means for controlling the charger, and notification control means for notifying the user of the electric vehicle of the control contents of the charger by the charger control means, the charger control means comprising the input voltage When the input voltage detected by the detection means is equal to or higher than the upper limit value of a predetermined limit voltage range, normal charge control is performed to permit charging of the power storage means by the charger with electric power based on the input voltage. And When the input voltage detected by the input voltage detecting means limited than electric power charging power during the charge is in the predetermined limit voltage region, from power charged during the normal charge Executing a limited charge control that permits charging of the power storage means by the charger with a limited power , and the notification control means executes the normal charge control when the normal charge control is being executed. The user is notified that the limited charge control is being executed when the limited charge control is being executed by the charger control means.

Also, the charge control device for an electric vehicle according to the present invention described in claim 2, in the context of claim 1, wherein the charger controller is detected input voltage is the limit voltage by the input voltage detecting means A charge prohibition control for prohibiting charging of the power storage means by the charger is performed when the charge prohibition control is being executed by the charger control means. In addition, the user is notified that the charge prohibition control is being executed.

According to a third aspect of the present invention, there is provided a charging control device for an electric vehicle according to the first or second aspect of the present invention, wherein the electric vehicle has a charging lamp for visually informing the user of information related to charging. The notification control means is configured to notify the user of the control content of the charger control means by controlling turning on and off of the charging lamp.
According to a fourth aspect of the present invention, there is provided the charging control device for an electric vehicle according to the third aspect , wherein the notification control means is configured such that the limited charging control is executed by the charger control means. The charging lamp is blinked in the first pattern, and when the normal charging control is executed by the charger control means, the charging lamp is continuously lit.

The charging control device for an electric vehicle according to a fifth aspect of the present invention is the charging device according to any one of the first to fourth aspects, wherein the charger is an in-vehicle charger mounted on the electric vehicle. It is characterized by being.

According to the charging control device for an electric vehicle of the present invention, when normal charging control is being performed, the user is notified of this, and when limited charging control is being performed, the user is notified accordingly. Therefore, the user can be notified of the state of charge of the electric vehicle according to the power supply environment. (Claim 1)
Further, even when charging is prohibited because the input voltage is less than the lower limit value of the limit voltage range, it is possible to notify the user to that effect. (Claim 2 )
In addition, by controlling the turning on / off of the charging lamp, it is possible to notify the user of the control content related to charging without causing an increase in cost or complicating the control. (Claim 3 )
In addition, it is possible to notify the user whether the limited charge control is being executed or whether the normal charge control is being executed by a simple control of changing the lighting lamp on / off control. (Claim 4 )
Moreover, even when the charger is an on-vehicle charger mounted on a vehicle, it is possible to reliably notify the user of a charging state corresponding to the power supply environment. (Claim 5 )

Hereinafter, a charging control device for an electric vehicle according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram illustrating the overall configuration, and FIG. 2 is a schematic diagram illustrating an instrument panel of the electric vehicle. 3 and 4 are schematic time charts showing the turning on and off of the charging lamp.
5 and 6 are schematic flowcharts showing the operation of the electric vehicle charging control apparatus according to the embodiment of the present invention.

  As shown in FIG. 1, an electric motor (vehicle) 10 is provided with an electric motor 13, an inverter 14, and a charging unit (charger) 15 below the floor panel 11 and in the vicinity of the rear wheel 12. A battery case 17 is provided below the floor panel 11 and between the front wheel 16 and the rear wheel 12, and a battery (power storage means) 18 is built in the battery case 17.

Among these, the electric motor 13 is mechanically connected to the rear wheel 12 and drives the rear wheel 12.
The inverter 14 is electrically connected to the battery 18, converts DC power supplied from the battery 18 into AC power, and supplies it to the electric motor 13. At this time, the inverter 14 can change the frequency of the AC power output to the electric motor 13.

The charging unit 15 converts the AC voltage of about 100 V input from the household power supply 41 into a DC voltage of about 350 V and boosts it to charge power suitable for charging the battery 18. By outputting to the battery 18, the battery 18 is charged.
The charging unit 15 is provided with an input voltage sensor 19. The input voltage sensor 19 measures the actual voltage Vin input to the charging unit 14.

  Further, the electric vehicle 10 is provided with a charging socket 23 to which one end 42A of the charging cable 42 is detachably connected. In addition, the charging socket 23 and the charging unit 15 are electrically connected by a charging harness 25. The other end 42B of the charging cable 42 is a general plug with a two-pole ground terminal (JISC 8303 with a two-pole grounding pole), and can be connected to an external electrical outlet. Yes. As shown in FIG. 1, in the present embodiment, a case where the user of the electric vehicle 10 extends the home power supply 41 of the user's home H using the extension cord 43 will be described as an example.

Therefore, one end 42A of the charging cable 42 is connected to the charging socket 23, and the other end 42B of the charging cable 42 is inserted into the outlet 43A of the extension cord 43. AC power is supplied through the cord 43 and the charging cable 42.
An instrument panel 22 is provided in the passenger compartment 21 of the electric vehicle 10.

As shown in FIG. 2, the instrument panel 22 is provided with a speed display window 23, a battery charge amount display window 24, a travel distance display window 25, and a charge lamp 26.
As shown in FIG. 1, the electric vehicle 10 is provided with an ECU (Electronic Control Unit) 30. The ECU 30 is an electronic control unit that includes a memory and a CPU (Central Processing Unit) (not shown).

Also, in this memory, as a software, a charging unit control unit (charger control unit) 31, a notification control unit (notification control unit) 32, an event history writing unit (event history writing unit) 33, a counter value writing Section (counter value writing means) 34 and event history erasing section (event history erasing means) 35 are stored.
In the memory (not shown) of the ECU 30, an event history recording area (event history recording means) 36 and a counter value recording area (counter value recording means) 37 are set as storage areas.

Among these, the charging unit control unit 31 controls the charging unit 15 according to the input voltage Vin detected by the input power sensor 19.
More specifically, the charging unit control unit 31 executes “charging preparation control”, “restricted charging control”, “normal charging control”, or “charging prohibition control”.
Among these controls, the charging preparation control is a control for examining the state of the electric power (input power) input to the charging unit 15, and the charging unit control unit 31 is controlled by the ECU 30 for a predetermined period (for example, about 10 seconds). The output is controlled at the maximum power within the possible output range that does not exceed the indicated value from.

  In addition, the charging unit control unit 31 performs limited charging control when the input voltage Vin detected by the input voltage sensor 19 is within a limited voltage range (for example, 85 V or more and less than 95 V). . The limited charging control is control that permits charging of the battery 18 by the charging unit 15 while assuming that the input voltage Vin is not in a preferable state but is not so bad as to prohibit the charging of the battery 18.

  Moreover, the charging unit control part 31 is in the state in which this input voltage Vin is not preferable when the input voltage Vin detected by the input voltage sensor 19 is less than the lower limit value Vth1 (for example, 85V) of a limit voltage area. It is assumed that there is, and charging prohibition control is executed. This charging prohibition control is a control for prohibiting charging of the battery 18 by stopping the output of charging power from the charging unit 15 to the battery 18.

In addition, the charging unit control unit 31 is in a preferable state when the input voltage Vin detected by the input power sensor 19 is equal to or higher than the upper limit value Vth2 (for example, 95 V) of the limit voltage range. It is assumed that normal charging control is executed.
The notification control unit 32 notifies the user of the electric vehicle 10 of the control content of the charging unit 15 by the charging unit control unit 31.

  That is, the notification control unit 32 performs control to blink the charging lamp 26 of the instrument panel 22 in the first pattern shown in FIG. 4 when the limited charging control is executed by the charging unit control unit 31. It has become. Note that the first pattern is a pattern in which the lighting period T1on is set to 0.8 seconds, the extinguishing period T1off is set to 0.2 seconds, and the charging lamp 26 is blinked.

As a result, although the battery 18 is being charged to the user of the electric vehicle 10, in order to place the battery 18 in a fully charged state, a preset full charge period (for example, about 7 hours) is exceeded. It is possible to notify that a long time is required.
In addition, when the normal charging control is performed by the charging unit control unit 31, the notification control unit 32 performs a control for continuously lighting the charging lamp 26 as shown in FIG.

Thereby, charging of the battery 18 is normally performed for the user of the electric vehicle 10, and the battery 18 is brought into a fully charged state by charging during a full charging period (for example, about 7 hours). Can be notified that can be.
Furthermore, when the charging preparation control is executed by the charging unit control unit 31, the notification control unit 32 performs control to repeatedly blink the charging lamp 26 in the second pattern shown on the left side of FIG. 3 and the left side of FIG. It is supposed to run. The second pattern is a pattern in which the lighting period T2on and the extinguishing period T2off are both set to 1 second, and the charging lamp 26 is blinked.

Thereby, it is possible to notify the user of the electric vehicle 10 that preparation for charging the battery 18 is being performed.
Further, when the charge prohibition control is being executed by the charging unit control unit 31, the notification control unit 32 is configured to execute a control for continuously turning off the charging lamp 26. Thereby, it is possible to notify the user of the electric vehicle 10 that the battery 18 is not charged.

  The event history writing unit 33, when the charge unit control unit 15 performs the limited charge control or the charge prohibition control, or when the normal charge control is performed and does not end normally, these events, That is, an event history recording area set in the memory of the ECU 30 indicates that an event history indicating that the limited charge control or the charge prohibition control has been executed, or the normal charge control has been executed but has not ended normally. Write to 36. The event history written in the event history writing unit 33 can be read by a user of the electric vehicle 10 or a maintenance person by connecting a computer (not shown) to the ECU 30. Yes.

The counter value writing unit 34 is stored in the memory of the ECU 30 when the limited charging control or the charging prohibition control is executed by the charging unit control unit 15 or when the normal charging control is executed but does not end normally. The charging limit counter value n (n = 10) is written in the counter value recording area 37 set to.
The event history erasure unit 35 decrements the charge limit counter value n set by the event history writing unit 33 and recorded in the memory by one each time the execution of the normal charging control by the charging unit control unit 31 ends normally. Is. The event history erasure unit 35 then subtracts all the event histories recorded in the event history recording area 36 when the charge limit counter value (counter value) n recorded in the memory is subtracted until it reaches 0 (threshold). Is supposed to be erased.

  For example, when normal termination of normal charge control is continued four times, the charge limit counter value n is subtracted four times by the event history erasure unit 35, and the charge limit counter value n recorded in the memory becomes six. Even if the limit charge control or the charge prohibition control is executed even once, the counter value writing unit 34 sets the charge limit counter value n to 10 again and records it in the counter value storage area 37 of the memory. It is supposed to be.

Since the charging control device for an electric vehicle according to an embodiment of the present invention is configured as described above, the following operations and effects are achieved.
First, the control mainly focusing on turning on / off the charging lamp 26 will be described with reference to the flowchart of FIG.
One end 42 </ b> A of the charging cable 42 is connected to the charging socket 23, and the other end 42 </ b> B of the charging cable 42 is inserted into the outlet 43 </ b> A of the extension cord 43, so that the charging unit 15 includes the household power supply 41 and the extension cord 43. The electric power is supplied through the charging cable 42 and the charging socket 23 (step S11).

At this time, the charging unit control part 31 performs charge preparation control (step S12).
That is, in step S12, the charging unit control unit 31 accepts the maximum current for a predetermined period (for example, about 10 seconds) by removing the limitation on the current input to the charging unit 15 (maximum of 12A). The input voltage Vin is detected by the input voltage sensor 19.

Further, in step S12, the notification control unit 32 executes control to repeatedly blink the charging lamp 26 in the second pattern shown on the left side of FIG. 3 and the left side of FIG. This notifies the user of the electric vehicle 10 that preparation for charging the battery 18 is in progress.
Thereafter, the charging unit control unit 31 determines whether or not the input voltage Vin detected during the execution of the charging preparation control in step S12 is equal to or lower than the lower limit value Vth1 (for example, 85 V) of the limiting voltage range (step S13). ).

  Here, when it is determined that the input voltage Vin is equal to or lower than the lower limit value Vth1 (Yes route of step S13), the notification control unit 32 continuously turns off the charging lamp 26 (step S14), and charging unit control is performed. Control for prohibiting charging of the battery 18 by the charging unit 15, that is, charging prohibition control is executed by the unit 31 stopping the output of the charging power from the charging unit 15 to the battery 18 (step S15).

In step S13, when the input voltage Vin exceeds the lower limit value Vth1 (for example, 85V) of the limit voltage range (No route of step S13), the charging unit control unit 31 determines that the input voltage Vin is within the limit voltage range. It is determined whether or not it is less than an upper limit value Vth2 (for example, 95V) (step S16).
Here, when it is determined that the input voltage Vin is less than the upper limit value Vth2 (Yes route in step S16), the notification control unit 32 performs control to repeatedly blink the charging lamp 26 in the first pattern shown on the right side of FIG. Is executed (step S17). As a result, although the battery 18 is being charged to the user of the electric vehicle 10, in order to place the battery 18 in a fully charged state, a preset full charge period (for example, about 7 hours) is exceeded. It can be notified that a long time is required.

At this time, the charging unit control unit 31 considers that the input voltage Vin is not in a preferable state but is not so bad as to prohibit the charging of the battery 18, and permits the charging of the battery 18 by the charging unit 15. That is, limited charge control is executed (step S18).
On the other hand, when the charging unit control unit 31 determines in step S16 that the input voltage Vin is equal to or higher than the upper limit value Vth2 of the limit voltage range (No route in step S16), the notification control unit 32 displays the right side of FIG. As shown, the charging lamp 26 is controlled to be continuously lit (step S19). Thereby, charging of the battery 18 is normally performed for the user of the electric vehicle 10, and the battery 18 is brought into a fully charged state by charging during a full charging period (for example, about 7 hours). Can be notified.

At this time, the charging unit control unit 31 regards the input voltage Vin as a preferable state, and executes control for allowing normal charging, that is, normal charging control (step S20).
Next, the control mainly focusing on the deletion of the event history will be described using the flowchart shown in FIG.

One end 42A of the charging cable 42 is connected to the charging socket 23, and the other end 42B of the charging cable 42 is inserted into the outlet 43A of the extension cord 43, whereby the household power supply 41, the extension cord 43, Electric power is supplied through the charging cable 42 and the charging socket 23 (step S31).
After that, when the limited charging control or the charging prohibition control is executed by the charging unit control unit 31, or when the normal charging control is executed but is not completed normally (No route in step S32), the counter value The writing unit 34 writes the charge limit counter value n (n = 10) into the counter value recording area 37 set in the memory of the ECU 30 (step S37).

Thereafter, the event history writing unit 33 stores in the memory of the ECU 30 an event history indicating that the limited charge control or the charge prohibition control has been executed, or that the normal charge control has been executed but has not ended normally. Writing into the set event history recording area 36 (step S38).
On the other hand, when the normal charging control is executed and completed normally by the charging unit control unit 31 (Yes route in step S32), the charging limit counter value n recorded in the counter value recording area 37 of the memory is decremented by 1 ( Step S33). Note that the minimum value of the charge limit counter value n by the event history erasure unit 35 is 0, and the charge limit counter value n never becomes negative.

When the charge limit counter value n recorded in the counter value recording area 37 is decremented until it becomes 0 (Yes route in step S34), the event history erasure unit 35 records all the events recorded in the event history recording area 36. The event history is deleted (step S35).
Thus, according to the charging control apparatus for an electric vehicle according to an embodiment of the present invention, when the charging unit control unit 31 is executing the limited charging control, the notification control unit 32 limits the charging to the user. It is possible to notify that control is being executed. That is, it is possible to notify the user of the state of charge of the battery 18 of the electric vehicle 10 according to the power supply environment.

  Further, when the electric vehicle 10 is charged from the household power supply 41 via the extension cord 43, the input voltage Vin drops due to the internal resistance of the extension cord 43, and the limited charge control and the charge prohibition control must be executed. It is assumed that it will fall into the situation. It is not preferable to perform charging using the extension cord 43 whose internal resistance is so high that limited charging control or charging prohibition control is executed. By notifying the user, the user can be alerted to use another extension cord with lower internal resistance.

Further, when the charging unit control unit 31 is executing the charge prohibition control, the notification control unit 32 can notify the user that the charge prohibition control is being executed. Thus, even when charging is prohibited because the input voltage is less than the lower limit value Vth1 of the limit voltage range, the user can be informed.
Moreover, when the charging unit control part 31 is performing normal charging control, the notification control part 32 can notify a user that normal charging control is being performed. That is, when the input voltage is appropriate and normal charging control is being executed, the user can be notified of this.

Further, the notification control unit 32 can notify the user of the contents of control by the charging unit control unit 31 by simple control of controlling turning on / off of the charging lamp 26. That is, by controlling turning on / off of the charging lamp, it is possible to notify the user of the control content related to charging without causing an increase in cost or complicating the control.
Further, when the limited charge control is executed, the charge lamp 26 blinks in the first pattern, and when the normal charge control is executed, the charge lamp 26 is continuously lit. In this way, the user can be informed whether the limited charge control is being executed or the normal charge control is being executed by a simple method of changing the contents of the on / off control of the charge lamp 26. I can do it.

In addition, even when the charging unit 15 is mounted on the vehicle 10, it is possible to reliably notify the user of the charging state according to the power supply environment.
Furthermore, according to the charging control device for an electric vehicle of the present invention, every time when the control of the charging unit 15 by the charging unit control unit 31 is normally completed, the charging limit counter value n written in the counter value recording area 36 is decreased. When the charge limit counter value n reaches the threshold value 0, the event history recorded in the event history recording area 36 is erased by the event history erasure unit 36.

Thereby, the user of the electric vehicle 10 can use useful events in the event history related to the charging of the battery 18 for the electric vehicle 10 while suppressing an increase in cost without increasing the storage capacity of the memory (not shown) of the ECU 30. And can be provided appropriately to maintenance personnel.
When the limited charge control is executed, an event history indicating that the limited charge control has been executed is written in the event history recording area 36, so that the input voltage Vin is within a predetermined limited voltage range (85 to 95V). The user or the person in charge of maintenance can know that charging has been performed in a state at a later date.

Further, when the limited charge control is executed, an event history indicating that the limited charge control has been executed is written, so that the charging is performed in a state where the input voltage is within the predetermined limited voltage range. Even so, users and maintenance staff can know.
When the charge prohibition control is executed, an event history indicating that the charge prohibition control has been executed is written in the event history recording area 36, so that the input voltage is below the lower limit value of the predetermined limit voltage range. The user or the maintenance staff can know that charging is going to be performed at a later date.

Even when the charging unit 15 is mounted on the electric vehicle 10, an event history related to charging the charging unit 15 mounted on the vehicle can be left in the event history recording area 36.
In addition, when charging is performed at a place other than the place where the battery 18 is normally charged (for example, a friend's house), even if charge restriction control or charge prohibition control is executed and an event history record remains, Every time charging is completed normally, the counter is decremented. That is, if there is no problem in the charging environment where the normal charging control is executed, the event history will not remain forever, and the user and maintenance staff will not be bothered.

Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and various modifications can be made without departing from the spirit of the present invention. An example is shown below.
In the above-described embodiment, the case where a lithium ion battery is mounted on an electric vehicle has been described as an example, but the present invention is not limited to a lithium ion battery. For example, another type of battery (for example, a nickel metal hydride battery) may be used instead of the lithium ion battery.

Further, instead of a lithium ion battery or a nickel metal hydride battery that stores electricity using a chemical reaction, a capacitor that electrically stores electricity may be used as the electricity storage means.
Moreover, although the case where the charging lamp 26 was provided in the instrument panel 22 was demonstrated in the above-mentioned embodiment, it is not limited to this. For example, instead of the charging lamp 26 or in addition to the charging lamp 26, the vehicle 10 may be provided with a voice guidance system that audibly notifies the user of information related to charging.

Further, in this case, the notification control unit 32 may notify the user of the contents of control by the charging unit control unit 31 by a warning sound or voice output from the voice guidance system. Thereby, a user's convenience can be improved more.
In the above-described embodiment, the case where the user of the electric vehicle 10 extends the home power supply 41 of the user's home H using the extension cord 43 has been described as an example. Furthermore, in the column of [Problems to be solved by the invention], the explanation was made by taking as an example that the voltage was greatly reduced from the standard due to the use of the extension cord. A situation in which the output current and voltage of the home power supply 41 itself in the user's home H are decreasing may be assumed. However, even in such a situation, according to the present invention, the user can be notified of the state of charge of the electric vehicle according to the power supply environment.

In the above-described embodiment, the case where the other end 42B of the charging cable 42 is a general plug with a two-pole ground terminal (JISC 8303 with a two-pole ground electrode) has been described. However, the present invention is not limited thereto. Is not to be done. What is necessary is just to change suitably the shape of the other end 42B of the cable 42 for charge so that it may adapt to the power supply environment of the country where the electric vehicle 10 is utilized.
Further, in the above-described embodiment, the event history erasure unit 35 is recorded in the event history recording area 36 when the number of times that the control of the charging unit 31 by the charging unit control unit 31 is normally completed reaches ten times. However, the present invention is not limited to this. Depending on the memory capacity of the ECU 30 and the memory capacity of the event history recording area 36, the event history erasing unit 35 is recorded in the event history recording area 36 when the number of times exceeds or less than 10 times. All event histories may be deleted.

  Further, in the above-described embodiment, a reset threshold value writing unit (reset threshold value writing means) 54 shown in FIG. 7 is provided instead of the counter value writing unit 34 described with reference to FIG. In place of the event history erasure unit 35, an event history erasure unit (event history erasure means) 55 shown in FIG. 7 is provided. Further, the counter value recording area 37 described with reference to FIG. A threshold recording area (reset threshold recording means) 57 may be provided.

  Among these, the reset threshold value setting unit 54 is different from the normal control in the control of the charging unit 15 by the charging unit control unit 31 (for example, when the limited charge control or the charge prohibition control is executed, or the normal When the charging control is executed but not completed normally), the reset threshold value m (for example, m = 10) is written in the reset threshold value recording area 57 set in the memory of the ECU 30. ing.

Further, the event history erasure unit 55 accumulates the normal end counter value f by one each time the execution of the normal charging control by the charging unit control unit 31 ends normally. When the accumulated normal end counter value f reaches the reset threshold value m, all event histories recorded in the event history recording area 36 of the ECU 30 are erased.
Here, the control contents of the charging control apparatus for an electric vehicle according to a modification of the above-described embodiment shown in FIG. 7 will be described with reference to the flowchart shown in FIG.

One end 42A of the charging cable 42 is connected to the charging socket 23, and the other end 42B of the charging cable 42 is inserted into the outlet 43A of the extension cord 43, whereby the household power supply 41, the extension cord 43, Electric power is supplied through the charging cable 42 and the charging socket 23 (step S41).
After that, when the limited charging control or the charging prohibition control is executed by the charging unit control unit 31, or when the normal charging control is executed but is not completed normally (No route in step S42), the reset threshold value The setting unit 54 writes the reset threshold value m (m = 10) into the counter value recording area 37 set in the memory of the ECU 30 (step S47).

Thereafter, the event history writing unit 33 stores in the memory of the ECU 30 an event history indicating that the limited charge control or the charge prohibition control has been executed, or that the normal charge control has been executed but has not ended normally. Data is written in the set event history recording area 36 (step S48).
On the other hand, when the normal charging control is executed and completed normally by the charging unit control unit 31 (Yes route in step S42), the event history erasing unit 55 completes the normal charging control by the charging unit control unit 31 normally. Each time, the normal end counter value f is accumulated by 1 (step S43).

  Then, when the accumulated normal end counter value f reaches the reset threshold value m (m = 10) (Yes route in step S44), the event history erasure unit 55 deletes all the events recorded in the event history recording area 36 of the ECU 30. When erasing the event history (Yes route in step S44), the event history erasure unit 35 erases all event histories recorded in the event history recording area 36 (step S45).

The event history erasure unit 55 stores the event history recorded in the event history recording area 36 until the accumulated normal end counter value f reaches the reset threshold value m (m = 10) (No route in step S44). It returns without erasing (step S46).
As described above, the electric vehicle charging control apparatus according to the above-described embodiment shown in FIG. 1 is also used by the electric vehicle charging control apparatus according to the modification of the above-described embodiment described with reference to FIGS. 7 and 8. Similar actions and effects can be obtained.

It is a typical block diagram which shows the whole structure of the charging control apparatus of the electric vehicle which concerns on one Embodiment of this invention. 1 is a schematic front view showing an instrument panel of a vehicle to which a charging control device for an electric vehicle according to an embodiment of the present invention is applied. It is a typical time chart which shows lighting and extinction of the charge lamp of the charge control apparatus of the electric vehicle which concerns on one Embodiment of this invention, Comprising: The case where normal charge is started from the charge preparation state is shown. It is a typical time chart which shows lighting and extinction of the charge lamp of the charge control apparatus of the electric vehicle which concerns on one Embodiment of this invention, Comprising: The case where limited charge is started from the charge preparation state is shown. It is a typical flowchart which shows operation | movement of the charge control apparatus of the electric vehicle which concerns on one Embodiment of this invention, Comprising: Control regarding lighting and extinction of a charge lamp is shown. It is a typical flowchart which shows operation | movement of the charging control apparatus of the electric vehicle which concerns on one Embodiment of this invention, Comprising: Control regarding the deletion of a charge limitation log | history is shown. It is a typical block diagram which shows the charge control apparatus of the electric vehicle which concerns on the modification of one Embodiment of this invention. It is a typical flowchart which shows operation | movement of the charge control apparatus of the electric vehicle which concerns on the modification of one Embodiment of this invention.

Explanation of symbols

14 Charging lamp 15 Charging unit (charger)
18 Battery (electric storage means)
19 Input voltage sensor (input voltage detection means)
31 Charging unit controller (charger control means)
32 Notification control unit (notification control means)
34 Counter value writing unit (counter value writing means)
37 Event history recording unit (event history recording means)
35 Event history writing part (event history writing means)
36 Event history deletion part (event history deletion means)
41 Power supply (household power supply)
Vth1 Lower limit value of limit voltage range Vth2 Upper limit value of limit voltage range n Charge limit counter value (counter value)

Claims (5)

A charging control device for an electric vehicle equipped with a power storage means that is charged by input power supplied from a power source,
A charger for charging the power storage means with the input power;
Input voltage detection means for detecting the voltage of the input power supplied to the charger;
Charger control means for controlling the charger according to the input voltage detected by the input voltage detection means;
Notification control means for notifying the user of the electric vehicle of the control content of the charger by the charger control means,
The charger control means includes:
When the input voltage detected by the input voltage detection means is equal to or higher than an upper limit value of a predetermined limit voltage range, normal charging that permits charging of the power storage means by the charger with electric power based on the input voltage Execute control,
When the input voltage detected by the input voltage detection means is within the predetermined limit voltage range, the power storage means by the charger with the power limited by the power charged during the normal charging. Perform limited charge control to allow charging,
The notification control means includes:
When the normal charging control is being executed by the charger control means, the user is notified that the normal charging control is being executed, and when the limited charging control is being executed, the limited charging is performed. A charging control apparatus for an electric vehicle, which notifies the user that the control is being executed . The charger control means includes:
When the input voltage detected by the input voltage detection means is less than the lower limit value of the limit voltage range, charge prohibition control for prohibiting charging of the power storage means by the charger is performed,
The notification control means includes:
When said charging said charging inhibition control by Electric control means is executed, and notifies to the user that the charging prohibition control is being executed, the charging control for an electric vehicle according to claim 1, wherein apparatus. The electric vehicle includes
A charging lamp for visually informing the user of information on charging;
The notification control means includes:
The charging control device for an electric vehicle according to claim 1 or 2 , wherein the user is notified of the contents of control by the charger control means by controlling turning on and off of the charging lamp. The notification control means includes:
When the limited charging control is being executed by the charger control means, the charging lamp blinks in the first pattern,
4. The electric vehicle charging control apparatus according to claim 3 , wherein when the normal charging control is executed by the charger control means, the charging lamp is continuously lit. The charger is
The charging control device for an electric vehicle according to any one of claims 1 to 4 , wherein the charging control device is an on-vehicle charger mounted on the electric vehicle.

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