WO2012117829A1

WO2012117829A1 - Display apparatus for vehicle

Info

Publication number: WO2012117829A1
Application number: PCT/JP2012/053121
Authority: WO
Inventors: 俊秀村山
Original assignee: 日本精機株式会社
Priority date: 2011-03-03
Filing date: 2012-02-10
Publication date: 2012-09-07
Also published as: JP2012182962A; JP5780412B2

Abstract

Provided is a display apparatus for a vehicle, wherein a highly-reliable charge completion time can be displayed. The display apparatus for a vehicle is provided with: a liquid crystal display panel (1) for displaying various information of an electric vehicle that acquires motive power thereof by driving a motor using a battery as the power source thereof; and a controlling means (4) that controls the liquid crystal display panel (1) such that vehicle information is inputted thereto, and a display based on the vehicle information is outputted. The controlling means (4) calculates, during charging of the battery, a charge completion time, which is the period of time necessary to charge the battery to a prescribed capacity that is preset, on the basis of information about the amount of power remaining in the battery that is obtained by inputting the amount of power remaining in the battery a plurality of times with a prescribed interval, and outputs this charge completion time on the liquid crystal display panel (1).

Description

Vehicle display device

The present invention relates to a vehicle display device mounted on an electric vehicle that can be connected to a charging facility in order to obtain power by driving a motor using a battery as an output source, and to charge an in-vehicle battery from an external power source.

Conventionally, electric vehicles include vehicles using only an electric motor as a driving source, and hybrid driving vehicles including an electric motor and an internal combustion engine such as an engine as driving sources. Any type of electric vehicle has an in-vehicle battery as an electricity storage device for supplying electric power to the electric motor, and the battery is charged when the remaining capacity of the battery decreases.

In particular, in an electric vehicle or a plug-in hybrid drive vehicle that uses only an electric motor as a drive source, the battery can be fully charged in a short time in a charging facility (hereinafter referred to as a charging facility) including a dedicated quick charging station. Development of a quick charger to achieve this has been underway, but in reality, the time required for charging is longer than the work time for filling the fuel in a short time at a gas station. For this reason, the vehicle user waits while charging.

Also, as a charging facility, not only a dedicated quick charging stand but also one that efficiently charges from a household power source as disclosed in Patent Document 1, for example, is disclosed.

In the above-mentioned electric vehicle, when charging the in-vehicle battery from the charging facility, it is necessary to inform the vehicle user of charging information such as the remaining capacity (storage capacity) of the in-vehicle battery and the charging end time. There is disclosed a battery charge state display device that displays a charge state of an in-vehicle battery on a high-mount stop lamp provided at the rear of the vehicle.

Further, for example, as shown in Patent Document 3, a device for improving convenience in using a vehicle by displaying a scheduled charging end time on a device such as a portable terminal is disclosed. *

JP 2001-219733 A JP 2000-102104 A JP 2010-149553 A

However, in the case of displaying the state of charge at the time of on-vehicle battery charging, particularly in the charging end time, the required charging time varies depending on the specifications of the charging equipment such as a quick charging stand and a household power source, for example. Therefore, it is difficult to predict the charging end time.

In addition, since the charging time varies depending on conditions such as the temperature environment for charging and the deterioration state of the in-vehicle battery, it is more difficult to predict the charging end time, and a more reliable information display is desired. .

Therefore, an object of the present invention is to provide a display device for a vehicle that has been made paying attention to the above-described problem and can display a highly reliable charging end time.

The vehicle display device of the present invention displays a variety of information of an electric vehicle that obtains power by driving a motor using a battery as an output source, and performs display output based on the vehicle information by inputting the vehicle information. And a control means for controlling the display panel, wherein the control means is based on remaining battery capacity information obtained by inputting a plurality of times every predetermined time during charging of the battery. Then, a charging end time for charging to a predetermined capacity of the battery set in advance is calculated, and this charging end time is output to the display panel.

Further, the control means displays the accumulated travel distance of the electric vehicle on the display panel as the various information during normal travel, and switches the display of the accumulated travel distance while the battery is being charged. An end time is displayed on the display panel.

Further, the control means calculates a time for charging up to the predetermined capacity as the charging end time based on a change amount of a plurality of remaining battery capacity information and a time required for the change. To do.

Further, the control means displays the time until the battery is fully charged on the display panel as the charging end time.

The present invention relates to a vehicle display device mounted on an electric vehicle that can be connected to a charging facility in order to obtain power by driving a motor using a battery as an output source and to charge an on-vehicle battery from an external power source. High charge end time can be displayed.

The block diagram which shows the structure of embodiment of this invention. The figure which shows the example of a display of the display panel in embodiment same as the above. The figure which shows the example of the charge time and electrical storage ratio in embodiment same as the above.

Hereinafter, an embodiment in which the present invention is applied as an on-vehicle instrument of an electric vehicle will be described with reference to the accompanying drawings. In addition, the electric vehicle of an Example is provided so that it can connect using facilities and cables, such as a 100V outlet and a 200V outlet of a household power supply, or a dedicated quick charge power supply.

FIG. 1 is a block diagram showing a configuration according to the present invention. The vehicle-mounted instrument A includes a liquid crystal display panel (display panel) 1, a backlight 2, input means 3, and control means 4. These components are electrically connected via a circuit board, wiring, etc., held in a case such as synthetic resin, and provided on the instrument panel in front of the vehicle so that the vehicle user can easily check while driving. It is done.

The liquid crystal display panel 1 forms a display image by switching transmission / non-transmission based on a control signal from the control means 4, so that the vehicle speed, the travel distance, the remaining capacity are not shown during normal travel, etc. This is an output means for displaying desired vehicle information such as an alarm. Further, the liquid crystal display panel 1 is provided with a liquid crystal display element and a drive driver in which liquid crystal is sealed between a pair of translucent substrates having a polarizing film and a transparent electrode, so that the display surface can be visually recognized. It is provided at a position or angle that faces the person. In this case, as shown in FIG. 2, the liquid crystal display panel 1 includes a numerical display unit 1a capable of displaying numerical values using a plurality of 7-segment configurations and a character display unit 1b indicating units or display items. It is possible to switch and display a plurality of types of display items.

Further, the liquid crystal display panel 1 can display charging information including the remaining charging time and the ratio of the storage capacity to the full charge based on a control signal from the control means 4 in a charging mode described later. With this information, it can be confirmed that the battery is being charged and the progress of the charging operation.

The backlight 2 can be a light source such as a light emitting diode, and is provided on the opposite side of the display surface of the liquid crystal display panel 1. In this case, the backlight 2 can be applied with an LED chip element provided on the circuit board, and is configured so that the output luminance can be changed in accordance with a control signal from the control means 4. Note that the backlight 2 may be an edge light system using a light guide. Further, it is also possible to irradiate the surface of the liquid crystal display panel 1 with no illumination light from the backlight 2 by interposing a diffusion plate or the like on the back side of the liquid crystal display panel 1.

The input means 3 can apply a trip switch for switching and displaying the total travel distance or section travel distance of the on-vehicle instrument, or a dimming switch for setting the illumination brightness of the on-vehicle instrument including the liquid crystal display panel 1. Further, the input unit 3 outputs an operation signal corresponding to the pressing operation of the vehicle user to the control unit 4.

The control means 4 is provided with a storage unit such as a ROM or a RAM (not shown) used for storing a predetermined program and various data, a storage area at the time of calculation, a CPU for performing arithmetic processing according to the predetermined program, an input / output interface, and the like. A microcomputer can be applied, and operation signals from the input means 3 and vehicle information based on various sensors of the vehicle are input via a dedicated communication cable (multiplex communication line), and the liquid crystal display panel 1 according to these signals. And a control signal for controlling the backlight 2 is generated and output. In this case, it is provided so as to be able to communicate with the battery control unit B, the main switch unit C, other ECUs, etc. via the communication cable.

The control means 4 is a normal mode in which a vehicle switch such as a vehicle speed is displayed on the liquid crystal display panel 1 by turning on a main switch (start switch) of a main switch unit C that is separately mounted on the vehicle, A stop mode in which the normal display output of the vehicle-mounted instrument is stopped by turning off the main switch and a power saving operation is performed, and a charge in which the charge state is displayed on the liquid crystal display panel 1 when the battery is in a chargeable state by connecting the power plug A mode is available.

The control means 4 switches the charging mode when a charging facility outside the vehicle (in this case, a rapid charging facility or a household power source) D is connected to the battery control unit B, and information on the in-vehicle battery is transmitted from the battery control unit B. The battery information can be input. In this case, the control means 4 inputs information on the remaining capacity (for example, 40%) via the communication cable, and displays on the liquid crystal display panel 1 as charging information including a charging end time described later based on this information. Can be output.

The control means 4 uses the full charge or a preset ratio (for example, 90% of the full charge) as the predetermined capacity as the charge information, and the remaining charge time (second estimated time) required to reach the predetermined capacity. Is estimated as the charging end time and displayed. In this case, as shown in FIG. 3, the control means 4 inputs battery information for a plurality of times, and based on the change amount 4a of the remaining battery capacity information and the time 4b required for this change, the control means 4 reaches the predetermined capacity 4c. The time for charging is calculated as the charging end time 4d.

Note that the control means 4 may simply calculate the time until the linear extension reaches the predetermined capacity 4c as shown in FIG. By calculating the time until the curved extension line based on the remaining battery capacity information or the charging characteristics of the battery reaches a predetermined capacity, a more accurate charging end time can be calculated.

Moreover, although the control means 4 showed the example which displays the remaining time which reaches | attains a predetermined capacity | capacitance as a charge end time, the time which reaches | attains a predetermined capacity | capacitance can also be displayed. In addition, by predicting and calculating the above-mentioned charging end time every predetermined time during charging, a more accurate charging end time can be obtained even when the environment (temperature, etc.) in charging or the load state of in-vehicle electrical components has changed. Can be calculated.

In addition, the control means 4 can also display a bar graph showing the ratio of the storage capacity to the full charge by using another area of the liquid crystal display panel 1 or another display, and the progress of the charging work can be displayed. I can confirm. Further, the control means 4 switches the display screen of the liquid crystal display panel 1 based on the operation signal from the input means 3 so that the elapsed time from the start of charging (current charging time), the charged battery capacity, the past Charging reference information such as a travelable distance predicted from vehicle information (travel distance per unit power) can also be selected and displayed. The charging reference information is a guide for selecting a charging method according to the vehicle user's vehicle use plan.

Such a vehicle display device includes a liquid crystal display panel 1 that displays various types of information on an electric vehicle that obtains power by driving a motor using a battery as an output source, and a vehicle that receives vehicle information and performs display output based on the vehicle information. The vehicle display device includes a control means 4 for controlling the liquid crystal display panel 1 so that the battery remaining power obtained by inputting a plurality of times every predetermined time during the charging of the battery. Based on the capacity information, a charging end time for charging to a predetermined capacity of the battery set in advance is calculated, and this charging end time is output to the liquid crystal display panel 1.

Therefore, in the display of the charging state at the time of battery charging, in particular, the charging end time, even if the charging time varies depending on the specifications of the charging equipment D such as a quick charging stand or a household power source, Depending on the result, an accurate charging end time can be calculated. In addition, the charging end time can be predicted regardless of conditions such as the temperature environment for charging and the deterioration state of the in-vehicle battery, and the charging end time with high reliability can be displayed.

Further, the control means 4 displays the accumulated travel distance of the electric vehicle on the liquid crystal display panel 1 as the various information during normal travel, and switches the display of the accumulated travel distance while the battery is being charged. By displaying the charging end time on the liquid crystal display panel 1, it is possible to use the display device as well as to switch and display the charging end time with high reliability.

Further, the control unit 4 calculates the time for charging up to the predetermined capacity as the charging end time based on the amount of change in the plurality of remaining battery capacity information and the time required for the change, thereby charging the battery. Even when the environment or the like is different, the charging end time with high reliability can be calculated without being affected by this.

Further, the control means 4 displays a time until the battery is fully charged on the liquid crystal display panel 1 as the charging end time, thereby making the system simple and easy for the vehicle user.

The vehicle display device of the present invention has been described by way of example in the configuration of the embodiment described above, but the present invention is not limited to this, and the gist of the present invention is also achieved in other configurations. It goes without saying that various improvements and design changes can be made without departing from the scope.

For example, the display panel has been described as an example of performing display using the liquid crystal display panel 1 and the backlight 2, but the display means uses other display devices such as organic EL elements and fluorescent display tubes. In addition, the same effects as those of the above-described embodiment can be obtained. Further, the input means 3 may be provided on the vehicle-mounted instrument A, may be provided on another instrument panel, or on a steering wheel, via a dedicated wiring or the communication cable described above. Any control signal that can be received by the control means 4 can be substituted, and the same effects as those of the above-described embodiment can be obtained.

The vehicle display device according to the present invention can be applied, for example, as an instrument for a moving body such as an automobile or a motorcycle, and is particularly suitable as a display device mounted on a vehicle requiring battery charging, such as an electric vehicle or an electric motorcycle. .

1 Liquid crystal display panel (display panel)
2 Backlight 3 Input means 4 Control means

Claims

A display panel for displaying various information of an electric vehicle that obtains power by driving a motor with a battery as an output source;
A vehicle display device comprising control means for controlling the display panel to input vehicle information and perform display output based on the vehicle information,
The control means sets a charging end time for charging up to a predetermined capacity of the battery set in advance based on remaining battery capacity information obtained by inputting a plurality of times every predetermined time during charging of the battery. A vehicle display device that calculates and outputs the charging end time to the display panel.
The control means displays the accumulated travel distance of the electric vehicle on the display panel as the various information during normal travel, and switches the display of the accumulated travel distance during charging of the battery, and the charge end time The vehicle display device according to claim 1, wherein: is displayed on the display panel.
The said control means calculates the time for charging to the said predetermined capacity | capacitance as said charge end time based on the variation | change_quantity of several battery remaining capacity information, and the time required for the change. The vehicle display device according to claim 1 or 2.
The vehicle display device according to any one of claims 1 to 3, wherein the control means causes the display panel to display a time until the battery is fully charged as the charging end time.