JP2010213556A - Charging apparatus, and information presentation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify a user of the charge state of a battery and the like accurately while suppressing the power consumption of an on-vehicle battery. <P>SOLUTION: A drive power supplying part 34 supplies AC power to a monitor part 35, when AC power is supplied, and supplies DC power from a low-voltage battery power acquisition part 33 to the monitor part 35, when AC power is not supplied. A high-voltage system abnormality detection part 37 of the monitor part 35, detects abnormality of commercial AC power and a high-voltage battery 16. A low-voltage system abnormality detection part 38 detects abnormality of a low-voltage battery 22. A display control unit 40 supplies its driving power to a display part 14, and makes the display part 14 display the charge state of the high-voltage battery 16, and caused charging failure and the like. A LAN communication part 41, after connecting to a personal computer, informs it of information on the charge state of the high-voltage battery 16, caused charging failure and the like. This invention can be applied to a plug-in electric vehicle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a charging device and an information presentation method, and more particularly, to a charging device and an information presentation method capable of confirming a charging status of an electric vehicle from the outside of the electric vehicle, for example.

  A so-called hybrid vehicle equipped with an engine and a motor is spreading, and in the future, an electric vehicle and a hybrid vehicle that can be directly charged from a commercial AC outlet for home use are expected. Hereinafter, an electric vehicle or a hybrid vehicle that can be charged from a commercial AC (alternating current) outlet for home use is hereinafter referred to as a plug-in electric vehicle.

  To charge the plug-in electric vehicle, the user attaches one end of the power supply cable to the power supply connector of the power supply port provided in the plug-in electric vehicle, and connects the plug provided at the other end of the power supply cable to a commercial AC outlet. Just plug it in.

  Note that the charging status of the plug-in electric vehicle is usually displayed on an instrument panel (instrument panel) provided in front of the driver's seat in the vehicle. However, when the user is outside the vehicle, it is difficult to see the display on the instrument panel, or it is troublesome to bother to enter the vehicle and check it. Therefore, for example, Patent Document 1 proposes that a display unit indicating whether charging is being performed and whether charging is completed is provided near the power feeding connector of the power feeding port of the plug-in electric vehicle. Yes.

JP-A-7-87607

  The conventional display unit described above only displays whether or not charging is in progress and whether or not charging has been completed. For example, when charging is not performed due to some abnormality, the cause It is impossible to determine whether the battery is on the charging device side (plug-in electric vehicle side) or on the other side (for example, the commercial AC power supply side).

  In addition, since the conventional display unit uses an in-vehicle battery as a power source and performs display according to the opening of the lid of the power feeding port, the display of the in-vehicle battery is performed even when charging is not performed. There was a problem of consuming electric power.

  The present invention has been made in view of such a situation, and makes it possible to accurately notify a user of a charging state of a battery while suppressing power consumption of an in-vehicle battery.

  A charging device according to one aspect of the present invention is a charging device for charging a battery, an acquisition unit that acquires power for charging the battery via a power supply cable, and the battery using the acquired power. Charging means for charging; detection means for detecting a charging status of the battery and an abnormality that may occur in the battery; presentation means for presenting information indicating the detected charging status and occurrence of the abnormality to the user; and Supply means for supplying driving power to the detecting means and the presenting means, and when the power is acquired, the supplying means supplies the power as the driving power, and the power is acquired. If not, power from the battery is supplied as the drive power.

  In the charging device according to one aspect of the present invention, electric power for charging the battery is acquired via the power supply cable, the battery is charged using the acquired electric power, and the charging status for the battery and the battery can be generated. An abnormality is detected, and information indicating the detected charging status and occurrence of the abnormality is presented to the user. When power is acquired, the power is used as the driving power for detection and presentation. When power is not acquired, power from the battery is used as driving power for detection and presentation.

  Therefore, battery consumption due to display on the display unit can be suppressed.

  Note that the power for charging the battery can be, for example, commercial AC power acquired from a general commercial AC outlet provided in a house. Thus, charging can be performed by simply connecting a power supply cable to a commercial AC outlet at home, for example, without going to a dedicated facility for charging.

  The charging device can be built in an electric vehicle. In this case, when power is supplied to charge the electric vehicle, the supplied power supplies a power source for displaying the display unit, and the power of the on-board battery is not consumed. Therefore, consumption of the battery mounted on the vehicle can be suppressed.

  The presenting means may display the detected charging status and the information indicating the occurrence of the abnormality on a display unit provided near the connection source of the power feeding cable. Thereby, the user can grasp | ascertain generation | occurrence | production of a charging condition and abnormality outside the vehicle of an electric vehicle, for example.

  The presenting means may transmit the information indicating the detected charging state and the occurrence of the abnormality to another information processing apparatus to be presented to the user. The other information processing apparatus can be, for example, a personal computer, a television receiver, a mobile phone, or the like. Also. As a communication method, wireless LAN, PLC, or the like can be applied. Thereby, the user can grasp | ascertain charge condition and generation | occurrence | production of abnormality, for example, even if it exists in the house away from the electric vehicle.

  The presenting means may incorporate an alarm that sounds in response to the occurrence of the abnormality. Thereby, the user can know the occurrence of abnormality more reliably.

  The presenting means may display the information indicating the detected charging status and the occurrence of the abnormality on an instrument panel provided in the electric vehicle. Thereby, the user can grasp | ascertain generation | occurrence | production of a charging condition and abnormality also in a vehicle.

  The presenting means, when the ignition switch of the electric vehicle is on, displays the detected charging status and the information indicating the occurrence of the abnormality on the instrument panel provided in the electric vehicle, When the ignition switch of the electric vehicle is off and the power is acquired via a power feeding cable, the information indicating the detected charging status and the occurrence of the abnormality is displayed as a connection source of the power feeding cable. Display on a display unit provided in the vicinity of the electric vehicle, and when the ignition switch of the electric vehicle is off and the power is not acquired via a power supply cable, the display unit is not displayed. it can. As a result, information indicating the charging status and the occurrence of an abnormality is presented according to the user's whereabouts, and battery consumption is also suppressed.

  The charging means charges a first battery that supplies power to a motor that drives the electric vehicle using the electric power acquired through the power supply cable, and the supplying means acquires the electric power. If not, the power from the second battery that supplies power to the electrical component, which is different from the first battery, can be supplied as the driving power. In this case, when power is supplied to charge the first battery, the power supplied to display the display unit is covered by the supplied power, and the power of the second battery for electrical components is not consumed. . Therefore, consumption of the second battery is suppressed.

  An information presentation method according to an aspect of the present invention includes an acquisition unit that acquires power for charging a battery via a power supply cable, and a charging unit that charges the battery using the acquired power. In the information presentation method of the apparatus, when the power is acquired, the charging state for the battery and an abnormality that may occur in the battery are detected using the power as driving power, and the detected charging state and the abnormality are detected. When the information indicating the occurrence is presented to the user and the power is not acquired, the power from the battery is used as the driving power to detect the charging status of the battery and the abnormality that may occur in the battery, and the detected A step of presenting to the user information indicating the charging status and the occurrence of the abnormality.

  In the information presentation method according to one aspect of the present invention, when power is acquired via a power feeding cable, the charging status of the battery and an abnormality that may occur in the battery are detected and detected using the power as driving power. Information indicating the charging status and occurrence of abnormality is presented to the user. On the other hand, when power is not acquired via the power supply cable, the battery charging status and abnormalities that can occur in the battery are detected using the power from the battery as drive power, and the detected charging status and occurrence of abnormalities are detected. Information to be shown is presented to the user.

  Therefore, battery consumption due to displaying the detected information can be suppressed.

  According to one aspect of the present invention, it is possible to accurately notify a user of a charging state of a battery or the like.

  Moreover, according to one aspect of the present invention, power consumption of the in-vehicle battery can be suppressed.

It is a block diagram which shows the structural example of the plug-in electric vehicle to which this invention is applied. It is a block diagram which shows the detailed structural example of the charging part of FIG. It is a flowchart explaining a display switching process. It is a figure which shows the structural example of a display part and an input part. It is a flowchart explaining a charge and condition display process. It is a figure which shows the display pattern of a display part.

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

  FIG. 1 shows a configuration example of a plug-in electric vehicle to which the present invention is applied. The plug-in electric vehicle 10 can be charged by electric power obtained from a commercial AC outlet 1 provided in a general household, and is connected to the commercial AC outlet 1 via a power supply cable 2.

  In addition to normal charging that is executed immediately when connected to the commercial AC outlet 1 and the power supply cable 2, the charging is performed only during a predetermined time zone (for example, a time zone in which a midnight power rate is applied). Timer charging to be performed, quick charging to finish charging in a shorter time than normal charging, and the like can be performed.

  The plug-in electric vehicle 10 includes an in-vehicle charging device 11, a high voltage battery 16, a leakage sensor 17, a BMU (battery management unit) 18, an inverter 19, a motor 20, a direct voltage converter (DCDC) 21, and a low voltage battery 22.

  An in-vehicle charging device 11 according to an embodiment of the present invention charges a high voltage battery 16 with electric power supplied from a commercial AC outlet 1 through a power feeding cable 2, and includes a power feeding port 12, a charging unit 13, a display. A unit 14 and an input unit 15 are provided.

  The power supply port 12 is provided with a power supply connector (not shown) for connecting the power supply cable 2. The charging unit 13 charges the high voltage battery 16 with power supplied via the power supply cable 2 connected to the power supply port 12. The charging unit 13 detects an abnormality in the commercial AC power supplied from the power supply port 12, an abnormality in the in-vehicle charging device 11, an abnormality in the high voltage battery 16, and an abnormality in the low voltage battery 22, and notifies the user of the detected abnormality. To do.

  The display unit 14 includes various indicators and is provided near the power feeding port 12. The display unit 14 is configured to display a charging status of the high voltage battery 16, a detected abnormality, and the like according to control from the charging unit 13.

  The input unit 15 is provided in the vicinity of the power supply port 12 in the same manner as the display unit 14 and receives an alarm canceling operation from the user.

  The high-voltage battery 16 supplies power via an inverter 19 to a motor 20 that is mainly a power source of the plug-in electric vehicle 10. In addition, the high voltage battery 16 is connected to the low voltage battery 22 serving as a power source for various electrical components (such as electric lamps, horns, wipers, air conditioners, audio navigation devices, etc.) provided in the plug-in electric vehicle 10. Power is supplied through.

  The leakage sensor 17 monitors the leakage from the high voltage battery 16. The BMU 18 manages charging for the high voltage battery 16 and the low voltage battery 22. For example, the high voltage battery 16 composed of a plurality of cells is efficiently charged. Further, the BMU 18 detects input / output current voltages and various abnormalities of the high voltage battery 16 and the low voltage battery 22 and notifies the charging unit 13 of them. Further, when there is no abnormality in the input / output current voltage of the high voltage battery 16, the BMU 18 continuously notifies the charging unit 13 of a charge permission command for the high voltage battery 16 regardless of whether the low voltage battery 22 is abnormal.

  The inverter 19 converts the high voltage DC power output from the high voltage battery 16 into an AC current having a frequency suitable for the motor 20. The motor 20 is rotationally driven by electric power supplied from the high voltage battery 16 via the inverter 19. The plug-in electric vehicle 10 travels when this rotational drive is transmitted to the tires via a gear box (not shown).

  The DC voltage converter 21 steps down the voltage of the DC power output from the high voltage battery 16 until it is suitable for charging the low voltage battery 22. The low voltage battery 22 supplies low-voltage (for example, 12 V) DC power to the in-vehicle charging device 11 in addition to various electrical components provided in the plug-in electric vehicle 10.

  Next, FIG. 2 shows a detailed configuration example of the charging unit 13 of the in-vehicle charging device 11. The charging unit 13 includes an AC power acquisition unit 31, a high voltage battery power supply unit 32, a low voltage battery power acquisition unit 33, a drive power supply unit 34, and a monitoring unit 35.

  The AC power acquisition unit 31 acquires AC power from the power supply cable 2 connected to the power supply port 12 and supplies the AC power to the high voltage battery power supply unit 32 and the drive power supply unit 34. The high voltage battery power supply unit 32 converts the AC power from the AC power acquisition unit 31 into DC power in accordance with the control from the control unit 39, transforms it to a voltage suitable for charging, and supplies it to the high voltage battery 16. The low-voltage battery power acquisition unit 33 acquires low-voltage DC power from the low-voltage battery 22 and supplies it to the drive power supply unit 34.

  When the AC power is supplied from the AC power acquisition unit 31, the drive power supply unit 34 converts the AC power into low-voltage DC power and supplies it to the monitoring unit 35 as drive power. Further, when AC power is not supplied from the AC power acquisition unit 31, DC power from the low voltage battery power acquisition unit 33 is supplied to the monitoring unit 35 as drive power.

  The monitoring unit 35 includes a BMU communication unit 36, a high voltage system abnormality detection unit 37, a low voltage system abnormality detection unit 38, a control unit 39, a display control unit 40, and a LAN communication unit 41.

  Of the notifications transmitted from the BMU 18, the BMU communication unit 36 outputs information related to the high voltage battery 16 to the high voltage system abnormality detection unit 37 and outputs information related to the low voltage battery 22 to the low voltage system abnormality detection unit 38.

  Based on the notification from the BMU communication unit 36 and the state of the AC power acquisition unit 31, the high-voltage system abnormality detection unit 37 has started supplying commercial AC power (provided at the other end of the power supply cable 2). Plug was inserted into the commercial AC power outlet 1), the fuse provided in the AC power acquisition unit 31 was blown, current voltage abnormality of commercial AC power, current voltage abnormality output from the high voltage battery 16 Then, the temperature abnormality of the high voltage battery 16, the leakage current abnormality, and the charging time excess abnormality are detected and notified to the control unit 39.

  Based on the notification from the BMU communication unit 36, the low voltage system abnormality detection unit 38 detects a current voltage abnormality output from the low voltage battery 22, a communication error between the BMU communication unit 36 and the low voltage battery 22, and a low voltage battery from the BMU communication unit 36. An abnormality in the command value for 22 is detected and notified to the control unit 39.

  The control unit 39 controls the entire on-vehicle charging device 11. Specifically, for example, the control unit 39 controls the high voltage battery power supply unit 32 to charge the high voltage battery 16, and based on notifications from the high voltage system abnormality detection unit 37 and the low voltage system abnormality detection unit 38. If it is determined that charging is abnormal, charging of the high voltage battery 16 is stopped. Further, when the control unit 39 determines that the charging is abnormal based on the notification from the high voltage system abnormality detection unit 37 and the low voltage system abnormality detection unit 38, the control unit 39 notifies the display control unit 40 accordingly. Further, the control unit 39 notifies the LAN communication unit 41 of information such as the charging status of the high voltage battery 16 and the charging abnormality that has occurred.

  The display control unit 40 supplies driving power to the display unit 14 and displays the charging status of the high-voltage battery 16 and the charging abnormality that has occurred. The LAN communication unit 41 is connected to, for example, a personal computer (not shown) via a wireless LAN or a PLC using the power supply cable 2 and notifies information such as a charging status of the high voltage battery 16 and a charging abnormality that has occurred. In addition, you may make it notify the said information to a mobile telephone, a television receiver, etc. Thereby, it is possible to inform the user who is away from the plug-in electric vehicle 10 (for example, at home) about the charging status or the occurrence of charging abnormality.

  Next, the display switching process by the in-vehicle charging device 11 will be described with reference to the flowchart of FIG.

  This display switching process is a process for appropriately switching the display destination of information such as the charging status of the high-voltage battery 16 and the occurrence of charging abnormality, and is repeatedly executed continuously while the plug-in electric vehicle 10 is parked. The In addition, the monitoring unit 35 is initially driven by using the low voltage battery 22 as a power source.

  In step S1, the control unit 39 determines whether or not the ignition switch of the plug-in electric vehicle 10 is on. If it is determined that the ignition switch is off, the process proceeds to step S2. In step S <b> 2, the control unit 39 determines whether or not the plug of the power supply cable 2 connected to the power supply port 12 is inserted into the commercial AC outlet 1. Proceed to S3. Further, in this case, the monitoring unit 35 will subsequently drive commercial AC power as a power source.

  In step S <b> 3, the LAN communication unit 41 determines whether communication with a personal computer installed in the user's house or the like is possible according to the control from the control unit 39. If it is determined that communication is possible, the process proceeds to step S4. In step S4, according to the control from the control unit 39, the LAN communication unit 41 transmits information such as the charging status of the high-voltage battery 16 and the generated charging abnormality to the personal computer determined to be communicable. Thereby, information, such as a charge condition, can be shown with respect to the user who is away from the plug-in electric vehicle 10.

  However, if it is determined in step S3 that communication is impossible, the process in step S4 is skipped.

  In step S5, the display control unit 40 causes the display unit 14 to display information such as the charging status of the high-voltage battery 16 and the charging abnormality that has occurred in accordance with the control from the control unit 39 (detailed with reference to FIG. ). Thereafter, the process returns to the processing step S1, and the subsequent steps are repeated.

  If it is determined in step S2 that the plug of the power supply cable 2 connected to the power supply port 12 is not inserted into the commercial AC outlet 1, the process proceeds to step S6. Further, in this case, the monitoring unit 35 is driven with the low voltage battery 22 as a power source thereafter.

  In step S6, the control unit 39 controls the display control unit 40 to stop the display by the display unit 14, and then detects an abnormality in the high voltage battery 22 and the low voltage battery 22 using the low voltage battery 22 as a power source. The detection result transitions to a power saving mode in which the display unit 14 does not display the detection result. Thereafter, the process returns to the processing step S1, and the subsequent steps are repeated.

  If it is determined in step S1 that the ignition switch of the plug-in electric vehicle 10 is on, the process proceeds to step S7, and information such as the charging status of the high-voltage battery 16 and the charging abnormality that has occurred is stored in the vehicle. It is displayed on the instrument panel (instrument panel) provided on the front of the driver's seat. Thereafter, the process returns to the processing step S1, and the subsequent steps are repeated.

  According to the display switching process described above, the monitoring unit 35 can always monitor the abnormality of the high voltage battery 22 and the low voltage battery 22 and displays the display unit 14 only when power is supplied through the power supply cable 2. Therefore, consumption of the low voltage battery 22 can be suppressed.

  Next, processing for displaying information such as the charging status of the high-voltage battery 16 and the charging abnormality that has occurred (hereinafter referred to as charging / status display processing) will be described. Before that, details of the display unit 14 and the input unit 15 are described. A typical configuration example will be described with reference to FIG.

  The display unit 14 includes, for example, an LED or a liquid crystal display. As shown in FIG. 4, the display unit 14 is provided with a charging indicator 71, an abnormality indicator 72, and a timer indicator 73. The charging indicator 71 can be lit and blinked in two colors, green and red. The abnormality indicator 72 can be turned on and blinking in red. The timer indicator 73 can be lit and flashed in orange.

  The display unit 14 incorporates an alarm (not shown) that rings when an abnormality occurs. The input unit 15 provided along with the display unit 14 is provided with a release switch 81 for stopping the alarm sounding. Note that a touch panel may be stacked on the display unit 14 formed of a liquid crystal display, and the display unit 14 and the input unit 15 may be integrated.

  Display examples for displaying information such as the charging status of the high-voltage battery 16 and the occurrence of abnormal charging on a personal computer installed in the user's house, etc., and on the instrument panel provided in the front of the driver's seat in the vehicle It is assumed that the display is similarly configured.

  Next, the charging / status display processing will be described with reference to the flowchart of FIG. This charging / situation display process is executed in step S5 in the display switching process described with reference to FIG. However, the display process in step S4 or S7 is the same.

  In step S11, the control unit 39 acquires an abnormality detection result from the high voltage system abnormality detection unit 37 and the low voltage system abnormality detection unit 38, and determines whether an abnormality is detected in step S12.

  If it is determined in step S12 that no abnormality has been detected, the process proceeds to step S13. In step S <b> 13, the display control unit 40 turns off the abnormality indicator 72 of the display unit 14 according to the control from the control unit 39 (if it is currently turned off, maintains it).

  In step S <b> 14, the control unit 39 is set to perform timer charging, and determines whether or not it is waiting until the start of timer charging. Here, if it is determined that it is not waiting until the start of timer charging, the process proceeds to step S15.

  In step S <b> 15, the control unit 39 determines whether or not a charging permission command for the high voltage battery 16 is notified from the BMU 18. If it is determined that the charge permission command has been notified, the process proceeds to step S26.

  In step S16, the control unit 39 determines whether or not the timer is currently being charged. If it is determined that the timer is being charged, the process proceeds to step S17. If it is determined in step S16 that the timer is not currently being charged, steps S17 and S18 described below are skipped.

  In step S <b> 17, the display control unit 40 turns on the timer indicator 73 of the display unit 14 according to the control from the control unit 39 (if it is currently lit, maintains it). In step S18, the control unit 39 determines whether or not the timer charging time period has ended. If it is determined that the timer charging time period has not ended, the process proceeds to step S19.

  In step S19, the control unit 39 determines whether or not the high voltage battery 16 is fully charged based on the notification from the BMU 18. If it is determined that the battery is not fully charged, the process proceeds to step S20.

  In step S <b> 20, the high voltage battery power supply unit 32 starts charging the high voltage battery 16 in accordance with the control from the control unit 39 (continues charging if charging is already in progress). In step S21, the display control unit 40 blinks the charging indicator 71 of the display unit 14 according to the control from the control unit 39 (if it is currently blinking, it is maintained). Note that the blinking cycle of the charging indicator 71 may be changed according to the degree of charging of the high voltage battery 16. Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  If it is determined in step S19 that the high voltage battery 16 is fully charged, the process proceeds to step S22.

  In step S22, the high voltage battery power supply unit 32 stops charging the high voltage battery 16 according to the control from the control unit 39 (if charging has already been stopped, the charging is continued to be stopped). In step S <b> 23, the display control unit 40 turns off the timer indicator 73 of the display unit 14 (maintains it if it is currently turned off) and turns on the charging indicator 71 in green according to the control from the control unit 39. (If it is currently lit green, it will be maintained). Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  If it is determined in step S18 that the timer charging time period has not ended, the process proceeds to step S24.

  In step S <b> 24, the high voltage battery power supply unit 32 stops charging the high voltage battery 16 according to the control from the control unit 39. In step S25, the display control unit 40 turns on the timer indicator 73 of the display unit 14 according to the control from the control unit 39 (if it is currently lit, maintains it) and turns on the charging indicator 71 in green. (If it is currently lit green, it will be maintained). Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  If it is determined in step S15 that the charging permission command for the high voltage battery 16 has not been notified from the BMU 18, the process proceeds to step S26. In step S <b> 26, the high voltage battery power supply unit 32 stops charging the high voltage battery 16 in accordance with the control from the control unit 39 (if the charging has already been stopped, the charging stop is continued). In step S27, the display control unit 40 turns off the timer indicator 73 of the display unit 14 according to control from the control unit 39 (maintains it if it is currently turned off) and turns off the charging indicator 71 ( If it is currently off, let it stay). Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  If it is determined in step S14 that the timer charging is on standby, the process proceeds to step S28. In step S28, the display control unit 40 blinks the timer indicator 73 of the display unit 14 according to the control from the control unit 39 (if it is currently blinking, it is maintained). Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  If it is determined in step S12 that an abnormality has been detected, the process proceeds to step S29. In step S <b> 29, the control unit 39 determines whether or not the high voltage battery 16 can be charged although an abnormality is detected. If it is determined that charging is possible, the process proceeds to step S30. In step S30, the display control unit 40 causes the abnormality indicator 72 of the display unit 14 to blink according to the control from the control unit 39 (if it is currently blinking, it is maintained). Thereafter, the process proceeds to step S14.

  If it is determined in step S29 that charging is not possible, the process proceeds to step S31. In step S <b> 31, the high voltage battery power supply unit 32 stops charging the high voltage battery 16 in accordance with the control from the control unit 39 (if the charging has already been stopped, the charging stop is continued).

  In step S32, the control unit 39 determines whether or not the detected abnormality is an electric leakage abnormality. If it is determined that there is no electric leakage abnormality, the process proceeds to step S33. In step S <b> 33, the display control unit 40 turns on the abnormality indicator 72 of the display unit 14 according to the control from the control unit 39 (if it is currently turned on, it is maintained). Thereafter, the process proceeds to step S35.

  If it is determined in step S32 that the detected abnormality is a leakage abnormality, the process proceeds to step S34. In step S34, the display control unit 40 turns on the charging indicator 71 of the display unit 14 in red and lights up the abnormality indicator 72 and the timer indicator 73 according to the control from the control unit 39 (all indicators are turned on at present). If so, keep it up). Thereafter, the process proceeds to step S35.

  In step S <b> 35, the control unit 39 determines whether or not the alarm sound is canceled by the cancel switch 81 of the input unit 15 (whether or not the sound is stopped). If it is determined that the alarm sound is not released (not stopped), the process proceeds to step S36, and the alarm is sounded (if the alarm is already sounded, it is maintained). ). On the contrary, if it is determined that the alarm sound is released (the sound is stopped), the process proceeds to step S37 and the alarm sound is stopped (if the alarm sound is already stopped, It is maintained). Thereafter, the process returns to step S11, and the subsequent steps are repeated.

  FIG. 6 summarizes the display patterns of the display unit 14.

  For example, if no abnormality is detected while waiting for timer charging, only the timer indicator 73 blinks with the charging indicator 71 and the abnormality indicator 72 turned off. Thereafter, when timer charging is started, the charging indicator 71 blinks green and the timer indicator 73 is lit. When the timer charging is finished, the charging indicator 71 is lit in green, and the lighting of the timer indicator 73 is maintained. Further, when a chargeable abnormality is detected during timer charging, the abnormality indicator 72 blinks while the green blinking of the charging indicator 71 and the lighting of the timer indicator 73 are maintained.

  For example, if no abnormality is detected during normal charging, only the charging indicator 71 flashes in green. When the battery is fully charged, the charging indicator 71 is lit in green. Further, when a chargeable abnormality is detected during normal charging, the abnormality indicator 72 is blinked while the green blinking of the charge indicator 71 is maintained.

  Further, for example, when an abnormality that cannot be charged is detected, the charging indicator 71 and the timer indicator 73 are turned off, the abnormality indicator 72 is turned on, and an alarm is sounded.

  Still further, for example, when a leakage is detected, the charging indicator 71 is lit red, the abnormality indicator 72 and the timer indicator 73 are lit, and an alarm is sounded.

  According to the charging / situation display processing described above, each indicator of the display unit 14 is turned on and blinks and an alarm is sounded according to the charging state of the high voltage battery 16 and the abnormality that has occurred. Note that the same processing is performed when information on the charging status of the high voltage battery 16 and information on the abnormality that has occurred is displayed on the personal computer screen of the user's house or on the instrument panel in the vehicle. Therefore, the user can accurately grasp the charging status and the occurrence of abnormality regardless of the location.

  In particular, when an abnormality that cannot be charged is detected, an alarm sound is also used, so the user can be notified of the occurrence of the abnormality more clearly. Furthermore, when leakage is detected, all the indicators are turned on and an alarm is sounded to call attention, so that it is possible to suppress the occurrence of a situation where the user touches the vehicle body and gets an electric shock.

  At the time of abnormality detection, instead of using the display unit 14 and the alarm described above, or using the display unit 14 together, for example, a hazard lamp and a brake lamp normally provided on the vehicle body are turned on and blinked, or a horn is turned on. You may make it ring.

  Further, the present invention can be applied not only to a plug-in electric vehicle as in the present embodiment, but also to a device that charges a built-in battery.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Commercial AC outlet 2 Power supply cable 10 Plug-in electric vehicle 11 Car-mounted charging device 12 Power supply port 13 Charging part 14 Display part 15 Input part 16 High voltage battery 22 Low voltage battery 31 AC power acquisition part 32 High voltage battery power supply part 33 Low voltage battery power acquisition Unit 34 drive power supply unit 35 monitoring unit 36 BMU communication unit 37 high voltage system abnormality detection unit 38 low voltage system abnormality detection unit 39 control unit 40 display control unit 41 LAN communication unit 71 charging indicator 72 abnormality indicator 73 timer indicator 81 release switch

Claims (9)

In a charging device for charging a battery,
Obtaining means for obtaining power for charging the battery via a power supply cable;
Charging means for charging the battery using the acquired power;
Detecting means for detecting a charging state of the battery and an abnormality that may occur in the battery;
Presenting means for presenting information indicating the detected charging status and occurrence of the abnormality to the user;
Supply means for supplying drive power to the detection means and the presentation means,
The supply means includes
If the power is acquired, supply the power as the drive power;
When the electric power is not acquired, electric power from the battery is supplied as the driving electric power. The charging device according to claim 1, wherein the charging device is built in an electric vehicle. The presenting means displays the information indicating the detected charging status and the occurrence of the abnormality on a display unit provided near a connection source of the power supply cable. The charging device described. 4. The charging device according to claim 1, wherein the presenting unit transmits the information indicating the detected charging state and the occurrence of the abnormality to another information processing device to be presented to a user. . The charging device according to claim 1, wherein the presenting unit includes an alarm that is sounded in response to the occurrence of the abnormality. The charging device according to claim 2, wherein the presenting unit displays the detected charging status and the information indicating the occurrence of the abnormality on an instrument panel provided in a vehicle of the electric vehicle. The presenting means is
When the ignition switch of the electric vehicle is on, the information indicating the detected charging status and the occurrence of the abnormality is displayed on the instrument panel provided in the electric vehicle,
When the ignition switch of the electric vehicle is off and the power is acquired via a power feeding cable, the information indicating the detected charging status and the occurrence of the abnormality is displayed as a connection source of the power feeding cable. Is displayed on the display provided near
The charging device according to claim 6, wherein the display unit is not displayed when an ignition switch of the electric vehicle is off and the power is not acquired via a power supply cable. The charging means charges a first battery that supplies power to a motor that drives the electric vehicle using the electric power acquired via the power supply cable,
The supply means includes
The electric power from the 2nd battery which supplies electric power with respect to an electrical component different from the said 1st battery when the said electric power is not acquired is supplied as said drive electric power. Charging device. Obtaining means for obtaining power for charging the battery via a power supply cable;
A charging device information presentation method comprising: charging means for charging the battery using the acquired electric power;
When the power is acquired, the power as drive power,
Detecting the charging status of the battery and an abnormality that may occur in the battery;
Presenting the user with information indicating the detected charging status and occurrence of the abnormality,
When the power is not acquired, the power from the battery as drive power,
Detecting the charging status of the battery and an abnormality that may occur in the battery;
An information presentation method comprising the step of presenting information indicating the detected charging status and occurrence of the abnormality to a user.

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