JP2013032132A - Vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular display device capable of realizing both improvement of understandability of display representing the remaining capacity of a battery and reduction of feeling of strangeness.SOLUTION: A display control unit 30 of a vehicular display device 100 acquires current remaining capacity of a battery 10 and an electric energy which makes the battery 10 chargeable On a battery image 50 of a liquid crystal display 20 connected with the display control unit 30, there are displayed a remaining capacity display image 60 extending with a length corresponding to the current remaining capacity, a remaining capacity reduction image 51 drawn alongside of a starting end position 61 of the remaining capacity display image 60, and a full charge image 53 drawn alongside of a terminating end position 69 of the remaining capacity display image 60. On the battery image 50, as an electric energy makes the battery 10 chargeable decreases, an interval between the starting end position 61 and the terminating end position 69 narrows down. Accordingly, fluctuations resulting from capacity deterioration of a remaining capacity of the battery 10 corresponding to the remaining capacity display image 60 with a specific length can be inhibited.

Description

  The present invention relates to a vehicle display device that is mounted on a vehicle together with a chargeable / dischargeable secondary battery and displays the remaining capacity of the secondary battery.

  2. Description of the Related Art Conventionally, as a kind of vehicle display device that displays information related to a secondary battery, devices as disclosed in, for example, Patent Literature 1 and Patent Literature 2 are known. The display device disclosed in Patent Literature 1 displays a state of charge (SOC) indicating the remaining capacity of the power storage device on the display unit. The SOC display part of this patent document 1 can show the present remaining capacity by extending | stretching by the length corresponding to the present remaining capacity in an electrical storage apparatus.

  Moreover, the battery remaining capacity meter for electric vehicles disclosed in Patent Document 2 measures and acquires the amount of electric power that can be charged in the main battery, and displays it on the display unit. As disclosed in Patent Document 2, the amount of power that can be charged in the main battery decreases due to the capacity deterioration of the battery. The battery remaining capacity meter of Patent Document 2 can indicate to the user of the vehicle display device a decrease in the amount of power that can be charged in such a secondary battery.

JP 2011-57116 A JP 08-43504 A

  Now, in the display device disclosed in Patent Document 1, even if the amount of power that can be charged in the secondary battery decreases due to the capacity deterioration of the secondary battery that is the power storage device, the start position and the end position of the SOC display section The interval between them is constant. Therefore, the remaining capacity of the secondary battery indicated by the SOC display unit having a specific length decreases as the capacity of the secondary battery deteriorates. Then, the cruising distance of the vehicle when the SOC image of a specific length is displayed is reduced due to the capacity deterioration of the secondary battery. Such an SOC display unit may give a sense of discomfort to the user of the display device.

  Suppose that the measurement result of the battery remaining capacity meter disclosed in Patent Literature 2 is displayed side by side with the SOC display portion disclosed in Patent Literature 1. In such a display, a decrease in the amount of power that can be charged in the secondary battery can be shown to the user based on the measurement result of the battery remaining capacity meter. However, the user must grasp that the remaining capacity of the secondary battery indicated by the SOC display unit having a specific length is decreased in view of the measurement result of the battery remaining capacity meter. Therefore, the form in which the SOC display unit and the battery remaining capacity meter are arranged in parallel may be difficult for the user to understand.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular display device which can easily display the remaining capacity of a secondary battery and can display it without a sense of incongruity.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a vehicle display device that is mounted on a vehicle together with a chargeable / dischargeable secondary battery and displays the remaining capacity of the secondary battery, Remaining capacity acquisition means for acquiring the current remaining capacity of the secondary battery as a current remaining capacity value, charging capacity acquisition means for acquiring the amount of power that can be charged in the secondary battery as a chargeable capacity value, The remaining capacity display image showing the current remaining capacity of the secondary battery by extending from the start position to the end position with a corresponding length, showing the decrease in the remaining capacity of the secondary battery formed alongside the start position Display the remaining capacity decrease image and the fully charged image formed side by side with the end position indicating that the secondary battery is in a fully charged state, and between the start position and the end position as the chargeable capacity value decreases. Display means for narrowing the interval, A display device for a vehicle.

  According to the present invention, the chargeable capacity value of the secondary battery decreases as the amount of power that can be charged in the secondary battery decreases due to capacity deterioration. As the chargeable capacity value decreases, the display means narrows the interval between the start position and the end position of the remaining capacity display image indicating the current remaining capacity of the secondary battery. Therefore, the remaining capacity reduced image aligned with the start position and the fully charged image formed along with the end position are close to each other. As described above, when the remaining capacity reduction image indicating the decrease in the remaining capacity of the secondary battery and the fully charged image indicating that the secondary battery is fully charged are close to each other due to the capacity deterioration of the secondary battery, the display is performed. The means may indicate to the user of the vehicle display device a decrease in the amount of power that can be charged in the secondary battery.

  In addition, since the interval between the start end position and the end position of the remaining capacity display image is narrowed due to the capacity deterioration of the secondary battery, the remaining capacity display image extending from the start end position toward the end position in the fully charged state is increased. This is shortened by the capacity deterioration of the secondary battery. Therefore, the remaining capacity of the secondary battery corresponding to the remaining capacity display image of a specific length can be maintained even when the capacity of the secondary battery is deteriorated. As described above, the cruising distance of the vehicle when the remaining capacity display image having a specific length is displayed is not easily changed even if the capacity of the secondary battery is deteriorated.

  As described above, the remaining capacity of the secondary battery is reduced by suppressing the fluctuation due to the capacity deterioration of the remaining capacity corresponding to the remaining capacity display image of the specific length while showing the capacity deterioration of the secondary battery. It is possible to both improve the ease of understanding the display and reduce the sense of discomfort.

  According to a second aspect of the present invention, the display means makes the end position approach the start end position as the chargeable capacity value decreases.

  In the present invention, as the amount of power that can be charged in the secondary battery decreases, the position at which the fully charged image is formed approaches the position at which the remaining capacity reduced image is formed. As described above, by moving the position of the fully charged image indicating the fully charged state toward the remaining capacity reduced image, the display unit emphasizes the decrease in the amount of power that can be charged in the secondary battery. Can be shown to the user. Therefore, the vehicular display device can more easily understand the capacity deterioration of the secondary battery to the user.

  According to a third aspect of the present invention, the display means displays a charge capacity image showing a chargeable capacity value of the secondary battery by being formed from the start position to the end position.

  In this invention, when the remaining capacity display image displayed due to the decrease in the remaining capacity of the secondary battery becomes shorter, the amount of power that can be charged to the secondary battery is difficult for the user to understand by displaying only the fully charged image. There is a risk of becoming. Therefore, a charge capacity image indicating the chargeable capacity value of the secondary battery is further displayed. The distance between the start end position and the end position of the remaining capacity display image is reduced due to the capacity deterioration of the secondary battery, so that the length of the charge capacity image formed from the start end position to the end position is shortened. Therefore, the charge capacity image can indicate the chargeable capacity value of the secondary battery according to its length. As described above, the amount of electric power that can be charged in the secondary battery is also indicated by the charge capacity image together with the full charge image, so that the display that shows the amount of electric power that can be charged in the secondary battery is easy to understand. Even when the remaining capacity display image is short, it can be secured.

  According to a fourth aspect of the present invention, the charge capacity image has a frame shape surrounding the remaining capacity display image.

  According to the present invention, since the charge capacity image has a frame shape surrounding the remaining capacity display image, the user can easily compare the charge capacity image and the remaining capacity display image. Therefore, the change in the length of the remaining capacity display image accompanying the decrease in the remaining capacity of the secondary battery is easily emphasized. Then, when the remaining capacity of the secondary battery corresponding to the remaining capacity display image of a specific length varies due to the capacity deterioration of the secondary battery, the uncomfortable feeling caused by the user may be emphasized. Concerned.

  However, in the present invention, the remaining capacity of the secondary battery corresponding to the remaining capacity display image having a specific length can be maintained by narrowing the interval between the start position and the end position. Therefore, the frame-shaped charge capacity image combined with the configuration in which the interval between the start position and the end position is narrowed is unlikely to cause a user's uncomfortable feeling and can emphasize the decrease in the remaining capacity of the secondary battery. . Therefore, by further displaying the frame-shaped charge capacity image, it is possible to further improve the ease of understanding the display while reducing the discomfort of the display indicating the remaining capacity of the secondary battery.

  In the invention according to claim 5, the display means is formed from the start position to the end position when the amount of electric power that can be charged in the secondary battery is maximum, so that the maximum chargeable capacity in the secondary battery is achieved. A maximum capacity image showing a value is displayed.

  According to the present invention, the chargeable capacity value in the current secondary battery is indicated by the interval between the remaining capacity reduced image and the fully charged image, and the maximum chargeable capacity in the secondary battery in a non-degraded state. The value is indicated by the maximum capacity image. As described above, by displaying the remaining capacity reduced image, the fully charged image, and the maximum capacity image in a state where they can be compared, the display means can more easily understand the decrease in the amount of power that can be charged in the secondary battery due to capacity deterioration. It can be shown to the user of the vehicle display device.

  In the invention according to claim 6, since the maximum capacity image is a frame surrounding the remaining capacity display image, the remaining capacity reduced image and the fully charged image formed side by side with the remaining capacity image, and the maximum capacity image Contrast is further facilitated. Therefore, the decrease in the amount of power that can be charged in the secondary battery due to the capacity deterioration will be more easily understood by the user of the vehicle display device.

  In the invention according to claim 7, the display means forms a charge capacity image showing a chargeable capacity value of the secondary battery by forming from the remaining capacity reduced image to the fully charged image along the remaining capacity display image. It is characterized by displaying.

  In this invention, the interval between the remaining capacity reduced image formed side by side with the start end position and the fully charged image formed side by side with the end position is narrowed by the capacity deterioration of the secondary battery, so that the charge capacity image The length is shortened. Therefore, the charge capacity image can indicate the chargeable capacity value of the secondary battery according to its length. As described above, the amount of power that can be charged in the secondary battery is also indicated by the charge capacity image formed along the remaining capacity display image, thereby indicating the amount of power that can be charged in the secondary battery. This can be ensured even when the remaining capacity display image is short.

  In the invention according to claim 8, the display means extends along the remaining capacity display image from the position aligned with the start position to the position aligned with the end position when the amount of power that can be charged in the secondary battery is maximum. By doing so, a maximum capacity image showing the maximum chargeable capacity value in the secondary battery is displayed.

  In the present invention, the remaining capacity reduced image, the fully charged image, and the maximum capacity image are displayed side by side with the remaining capacity display image. Therefore, the current chargeable capacity value of the secondary battery and the maximum chargeable capacity value of the secondary battery in a non-degraded state are displayed on the display means in an easily comparable state. Therefore, the decrease in the amount of power that can be charged in the secondary battery due to the capacity deterioration will be more easily understood by the user of the vehicle display device.

  The invention according to claim 9 is characterized in that the length of the remaining capacity display image changes discretely as the current remaining capacity value decreases.

  In the form of discretely changing the length of the remaining capacity display image as in the present invention, the change in the length of the remaining capacity display image accompanying the decrease in the remaining capacity of the secondary battery is easily emphasized. Then, when the remaining capacity of the secondary battery corresponding to the remaining capacity display image of a specific length varies due to the capacity deterioration of the secondary battery, the uncomfortable feeling caused by the user may be emphasized. Concerned.

  However, in the present invention, the remaining capacity of the secondary battery corresponding to the remaining capacity display image having a specific length can be maintained by narrowing the interval between the start position and the end position. Therefore, the remaining capacity display image of discretely changing length combined with the configuration in which the interval between the start end position and the end position is narrowed is unlikely to cause discomfort to the user, and the remaining capacity of the secondary battery is reduced. Can be emphasized. Therefore, by changing the length of the remaining capacity display image discretely, it is possible to further improve the ease of understanding the display while reducing the discomfort of the display indicating the remaining capacity of the secondary battery. Become.

1 is a configuration diagram schematically showing the configuration of a vehicle display device according to a first embodiment of the present invention. It is a figure for demonstrating the battery image displayed on a display screen in 1st embodiment of this invention. In 1st embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the present remaining capacity in a battery. In 1st embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the electric energy which can be charged to a battery. It is a flowchart in which the process in which a battery image is formed is shown. In 2nd embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the electric energy which can be charged to a battery. In 2nd embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the present remaining capacity in a battery. It is a figure for demonstrating the battery image displayed on a display screen in 3rd embodiment of this invention. In 3rd embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the present remaining capacity in a battery. In 3rd embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the electric energy which can be charged to a battery. It is a figure for demonstrating the battery image displayed on a display screen in 4th embodiment of this invention. In 4th embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the present remaining capacity in a battery. In 4th embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the electric energy which can be charged to a battery. It is a figure for demonstrating the battery image displayed on a display screen in 5th embodiment of this invention. In 5th embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the electric energy which can be charged to a battery. In 5th embodiment of this invention, it is a figure which shows the change of the display mode of a battery image accompanying the reduction | decrease of the present remaining capacity in a battery.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In addition, the overlapping description may be abbreviate | omitted by attaching | subjecting the same code | symbol to the corresponding component in each embodiment. When only a part of the configuration is described in each embodiment, the configuration of the other embodiment described above can be applied to the other part of the configuration. In addition, not only combinations of configurations explicitly described in the description of each embodiment, but also the configurations of a plurality of embodiments can be partially combined even if they are not explicitly specified unless there is a problem with the combination. .

(First embodiment)
FIG. 1 shows a configuration of a vehicle display device 100 according to the first embodiment of the present invention. The vehicle display device 100 is mounted on a vehicle together with a battery 10 that can be charged and discharged. The vehicle display device 100 displays a battery image 50 as shown in FIG. 2 indicating the remaining capacity of the battery 10 on the display screen 20 a of the liquid crystal display 20. Hereinafter, the configuration of the vehicle display device 100 will be described with reference to FIG.

  The vehicle display device 100 includes the display control unit 30 together with the liquid crystal display 20 described above. The display control unit 30 is connected to, for example, an in-vehicle local area network (in-vehicle LAN), and can communicate with the power management control device 13 and the like.

  The power management control device 13 is a control device that monitors and controls charging / discharging of the battery 10. The power management control device 13 is connected to the in-vehicle LAN and the battery 10. The power management control device 13 measures at least one of the current voltage and current of the battery 10 in order to detect the remaining capacity of the battery 10. The power management control device 13 sequentially outputs at least one of the measured voltage and current (hereinafter referred to as “remaining capacity information”) to the in-vehicle LAN when the power of the vehicle is on.

  The battery 10 controlled by the power management control device 13 decreases the amount of power that can be charged by repeating charging and discharging (hereinafter, the decrease in the amount of power that can be charged in the battery 10 is referred to as “capacity degradation”). The power management control device 13 stores the total amount of power that can be charged in the current battery 10. Specifically, when the amount of power charged in the battery 10 is maximized by charging the battery 10, the power management control device 13 measures at least one of the voltage and current of the battery 10. Based on this measured value, the power management control device 13 calculates the maximum amount of power that can be charged in the current battery 10 and stores it as current chargeable capacity information of the battery 10. Then, for example, when the vehicle power source is switched from the off state to the on state, the power management control device 13 outputs the stored chargeable capacity information of the battery 10 to the in-vehicle LAN.

  The display control unit 30 includes a processor that performs various types of arithmetic processing, a flash memory that stores programs used for the arithmetic processing, and a RAM that functions as a calculation work area. In addition, the display control unit 30 has a communication interface for acquiring information output to the in-vehicle LAN through the in-vehicle LAN.

  When the power supply of the vehicle is switched from the off state to the on state, the display control unit 30 receives the chargeable capacity information of the battery 10 through the in-vehicle LAN and acquires it as a chargeable capacity value. In addition, the display control unit 30 sequentially acquires the current remaining capacity information of the battery 10 through the in-vehicle LAN when the vehicle is powered on. Then, the display control unit 30 acquires the current remaining capacity of the battery 10 as the current remaining capacity value. Specifically, the display control unit 30 stores, in the flash memory, the remaining capacity characteristic data 33 indicating the correlation between the voltage or current value of the battery 10 and the remaining capacity that is the amount of power that is currently charged. I remember it. The display control unit 30 calculates and acquires the current remaining capacity value from the current remaining capacity information based on the characteristic data 33.

  The liquid crystal display 20 is arranged in the interior of the instrument panel with the display screen 20a facing the driver's seat on which the driver who is the user of the vehicle is seated in the vehicle in which the vehicle display device 100 is mounted. Is installed. On the display screen 20a of the liquid crystal display 20, as shown in FIGS. 1 and 2, a plurality of segments having a predetermined shape are formed. The liquid crystal display 20 forms the battery image 50 on the display screen 20 a by controlling the light transmittance of each segment based on the control signal from the display control unit 30.

  Next, the battery image 50 displayed on the display screen 20a of the liquid crystal display 20 will be described with reference to FIGS. FIG. 2 shows a battery image 50 in a state where all images that can be displayed are displayed. FIG. 3 shows a change in the display mode of the battery image 50 as the current remaining capacity in the battery 10 decreases. FIG. 4 shows a change in the display mode of the battery image 50 with a decrease in the amount of power that can be charged in the battery 10.

  The battery image 50 includes a remaining capacity display image 60, a remaining capacity reduced image 51, a fully charged image 53, a charged capacity image 55, and the like. The remaining capacity display image 60 is a band-like image as a whole, and shows the current remaining capacity of the battery 10 (see FIG. 1). The remaining capacity display image 60 extends from the start end position 61 defined in advance on the display screen 20a toward the end position 69 with a length corresponding to the current remaining capacity value. The remaining capacity display image 60 of the first embodiment extends from below to above along the vertical direction of the display screen 20a. The length in the extending direction of the remaining capacity display image 60 changes discretely as the current remaining capacity value decreases. More specifically, the remaining capacity display image 60 is formed by a plurality of rectangular images 63 arranged at a predetermined interval from the start end position 61 toward the end position 69. When the current remaining capacity value decreases, as shown in FIG. 3, the display of the plurality of rectangular images 63 is stopped in order from the one closer to the end position 69 than the start end position 61. Thereby, the remaining capacity display image 60 is discretely shortened as the remaining capacity of the battery 10 (see FIG. 1) decreases.

  As shown in FIG. 2, each rectangular image 63 has a pair of convex image portions 64 and a complementary image portion 65. The paired convex image portion 64 and complementary image portion 65 are arranged in the extending direction of the remaining capacity display image 60. In each rectangular image 63, the convex image portion 64 is closer to the starting end position 61 than the complementary image portion 65 that forms a pair. The convex image portion 64 has a convex shape that protrudes toward the complementary image portion 65 that forms a pair. On the other hand, the complementary image portion 65 has a concave shape that complements the convex shape of the convex image portion 64. A rectangular image 63 is formed by combining the convex image portion 64 having a convex shape and the complementary image portion 65 having a concave shape.

  As for the interval between the start end position 61 and the end position 69 that are the extension range of the remaining capacity display image 60 described above, the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) decreases due to the capacity deterioration of the battery 10. Is narrowed as shown in FIG. Specifically, the end position 69 approaches the start position 61 as the chargeable capacity value decreases. On the other hand, the start position 61 does not move even if the chargeable capacity value decreases. As described above, the length of the remaining capacity display image 60 displayed in the fully charged state of the battery 10 (see FIG. 1) is discretely shortened as the capacity of the battery 10 deteriorates.

  As shown in FIG. 2, the remaining capacity reduced image 51 is an image showing a decrease in the remaining capacity of the battery 10 (see FIG. 1). The remaining capacity reduced image 51 has a shape imitating the initial letter “E” of the word “EMPTY” indicating the empty state of the battery 10. The remaining capacity reduced image 51 is formed side by side with the starting end position 61 in the horizontal direction. Therefore, even when the chargeable capacity value decreases as shown in FIG. 4, the position where the remaining capacity reduced image 51 is displayed does not move.

  As shown in FIG. 2, the fully charged image 53 is an image indicating that the battery 10 (see FIG. 1) is in a fully charged state. The fully charged image 53 has a shape imitating the initial letter “F” of the word “FULL” indicating the fully charged state of the battery 10. The battery image 50 is provided with a plurality of fully charged images 53 that can be displayed. The fully charged image 53 is formed side by side with the end position 69 in the horizontal direction. Therefore, as shown in FIG. 4, one of the plurality of fully charged images 53 arranged along with the terminal position 69 corresponding to the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) is the display screen. 20a. As described above, when the chargeable capacity value decreases, the position where the fully charged image 53 is displayed moves so as to be close to the remaining capacity reduced image 51.

  As shown in FIG. 2, the charge capacity image 55 is an image showing the chargeable capacity value of the battery 10 (see FIG. 1). The charge capacity image 55 includes an image formed from the start position 61 to the end position 69 and has a frame shape surrounding the remaining capacity display image 60. The charge capacity image 55 has a shape imitating a dry battery as a whole. The charge capacity image 55 has a convex image portion 56, a concave image portion 57, and a pair of rod-shaped image portions 58. The convex image portion 56 has substantially the same convex shape as each convex image portion 64 of each rectangular image 63. The convex image portion 56 is formed so as to cover the rectangular image 63 at the end position 69 from above. The concave image portion 57 is provided in a concave shape that covers the rectangular image 63 at the starting end position 61 from below. Each bar-shaped image portion 58 is formed by a plurality of rectangular image portions arranged along the extending direction of the remaining capacity display image 60. Each bar-shaped image portion 58 has a bar shape as a whole. The pair of bar-shaped image portions 58 are positioned with the remaining capacity display image 60 in between in the horizontal direction of the display screen 20a.

  As shown in FIG. 3, the display mode of the charge capacity image 55 displayed on the display screen 20a does not change even if the current remaining capacity value acquired by the display control unit 30 (see FIG. 1) decreases. Therefore, the charge capacity image 55 can emphasize the change in the display mode of the remaining capacity display image 60 that becomes shorter as the current remaining capacity value decreases.

  On the other hand, as shown in FIG. 4, the distance between the start position 61 and the end position 69 is reduced due to the decrease in the chargeable capacity value, so that the length of the charge capacity image 55 is shortened. Specifically, it is assumed that the amount of power that can be charged in the battery 10 (see FIG. 1) has decreased by the amount of power corresponding to one rectangular image 63 due to capacity deterioration. Then, the end position 69 is defined as a position close to the start end position 61 by one rectangular image 63. With the movement of the end position 69 described above, the rectangular image portion of the convex image portion 56, the complementary image portion 65 adjacent to the convex image portion 56, and the bar-shaped image portion 58 positioned in the horizontal direction of the complementary image portion 65 is Display is canceled. In addition, the convex image portion 64 that is paired with the complementary image portion 65 whose display is stopped becomes the convex image portion 56 of the charge capacity image 55, and the display is not stopped when the current remaining capacity value decreases. As described above, the charge capacity image 55 which is shortened in the extending direction and has a shape imitating a dry battery as a whole is formed.

  When the amount of power that can be charged in the battery 10 decreases due to further capacity deterioration, the display of the convex image portion 56 and the complementary image portion 65 adjacent to the convex image portion 56 is stopped. In addition, the convex image portion 64 that is paired with the complementary image portion 65 whose display has been stopped becomes the convex image portion 56 of the charge capacity image 55. By changing the display mode as described above, the charge capacity image 55 in which the length in the extending direction is gradually shortened can continue to indicate the current chargeable capacity value of the battery 10 whose capacity is deteriorated.

  A process of displaying the battery image 50 on the display screen 20a in the vehicle display device 100 having the above configuration will be described in detail with reference to FIGS. The process shown in FIG. 5 is started by the display control unit 30 when the power source of the vehicle is switched from the off state to the on state. The process shown in FIG. 5 is terminated when the power source of the vehicle is switched from the on state to the off state.

  In S101, the current chargeable capacity information of the battery 10 output from the power management control device 13 to the in-vehicle LAN is acquired as a chargeable capacity value, and the process proceeds to S102. In S102, the end position 69 in the battery image 50 is determined based on the chargeable capacity value acquired in S101, and the process proceeds to S103. In S103, the display position of the fully charged image 53 is determined based on the end position 69 determined in S102. Further, the display mode of the charge capacity image 55 is determined based on the end position 69, and the process proceeds to S104.

  In S104, the remaining capacity information of the battery 10 is acquired from the power management control device 13, and the process proceeds to S105. In S105, the current remaining capacity value of the battery 10 is calculated and acquired from the remaining capacity information acquired in S104 based on the remaining capacity characteristic data 33. Then, the process proceeds to S106. In S106, a rectangular image 63 to be displayed as the remaining capacity display image 60 is determined based on the current remaining capacity value acquired in S105, and the process proceeds to S107.

  In S107, a control signal for causing the liquid crystal display 20 to display the full charge image 53 and the charge capacity image 55 determined to be displayed in S103 and the rectangular image 63 determined to be displayed in S106 on the display screen 20a. Output and return to S104. Then, the processing from S104 to S107 is repeated. The liquid crystal display 20 displays the battery image 50 on the display screen 20a in accordance with a control signal output by repeating the processing from S104 to S107.

  According to the first embodiment described so far, the interval between the start position 61 and the end position 69 of the remaining capacity display image 60 is narrowed as the chargeable capacity value decreases due to the capacity deterioration of the battery 10. By the above, the remaining capacity reduced image 51 and the fully charged image 53 are displayed at positions close to each other, whereby the vehicle display device 100 can indicate the capacity deterioration of the battery 10 to the driver. In addition, the length of the remaining capacity display image 60 in the fully charged state is shortened (see FIG. 4) by narrowing the interval between the start position 61 and the end position 69 as the capacity deteriorates. Therefore, the remaining capacity of the battery 10 corresponding to the remaining capacity display image 60 having a specific length, for example, one rectangular image 63 can be maintained even when the capacity of the battery 10 is further deteriorated. As described above, the cruising distance of the vehicle corresponding to one rectangular image 63 does not easily change even if the capacity of the battery 10 deteriorates. As described above, it is possible to understand the display of the remaining capacity by suppressing the fluctuation caused by the capacity deterioration of the remaining battery capacity corresponding to the remaining capacity display image 60 of the specific length while indicating the capacity deterioration of the battery 10. Both improvement in ease and reduction in discomfort can be realized.

  In addition, the battery image 50 according to the first embodiment can show both the capacity deterioration of the battery 10 and the current remaining capacity reduction of the battery 10 to the driver. A plurality of pieces of information can be shown in such a limited display space, and the battery image 50 can improve the mountability of the vehicle display device 100 on the vehicle.

  In the first embodiment, as the capacity of the battery 10 deteriorates, the display position of the fully charged image 53 approaches the display position of the remaining capacity reduced image 51. As described above, the capacity deterioration of the battery 10 can be emphasized and shown to the driver by moving the display position of the fully charged image 53 toward the remaining capacity reduced image 51. Therefore, the vehicle display device 100 can more easily understand the capacity deterioration of the battery 10 to the driver.

  Further, as in the first embodiment, in the form in which the remaining capacity display image 60 is shortened due to the decrease in the current remaining capacity in the battery 10, the amount of power that can be charged in the battery 10 is known to the driver only by the fully charged image 53. It can be difficult. Therefore, in the first embodiment, the charge capacity image 55 indicating the chargeable capacity value of the battery 10 is displayed, so that the amount of power that can be charged in the battery 10 is also indicated by the charge capacity image 55 together with the full charge image 53. . Therefore, it is possible to ensure that the display indicating the amount of power that can be charged in the battery 10 is easy even when the remaining capacity display image 60 is short.

  In addition, in the first embodiment, since the charge capacity image 55 has a frame shape surrounding the remaining capacity display image 60, the comparison between the charge capacity image 55 and the remaining capacity display image 60 by the driver is facilitated. Therefore, the change in the length of the remaining capacity display image 60 accompanying the decrease in the remaining capacity of the battery 10 is easily emphasized. If the remaining capacity corresponding to the remaining capacity display image 60 of a specific length varies due to the capacity deterioration of the battery 10, there is a concern that the uncomfortable feeling caused by the driver may be emphasized.

  Further, in the form in which the length of the remaining capacity display image 60 is discretely changed, the change in the length of the remaining capacity display image 60 accompanying the decrease in the remaining capacity of the battery 10 is easily emphasized. Even in this form, if the remaining capacity corresponding to the remaining capacity display image 60 of a specific length varies due to the capacity deterioration of the battery 10, the uncomfortable feeling caused by the driver may be emphasized. Concerned.

  Therefore, in the first embodiment, the frame-shaped charge capacity image 55 and the remaining capacity display image 60 whose length changes discretely are combined with a configuration in which the interval between the start position 61 and the end position 69 is narrowed. Yes. As described above, the configuration in which the interval between the start end position 61 and the end position 69 is narrowed exhibits a reduction action that reduces a sense of discomfort in display. Therefore, the charge capacity image 55 and the remaining capacity display image 60 combined with such a configuration are unlikely to cause a driver's uncomfortable feeling coupled with the above-described reduction action, and can emphasize the decrease in the remaining capacity of the battery 10. It will be a thing. Therefore, by displaying the frame-shaped charge capacity image 55 and the remaining capacity display image 60 whose lengths are discretely changed, the vehicular display device 100 reduces the discomfort of the display indicating the remaining capacity of the battery 10. Thus, it is possible to improve the clarity of the display.

  In the first embodiment, the battery 10 corresponds to a “secondary battery” recited in the claims, and the liquid crystal display 20 and the display control unit 30 cooperate to “display means” recited in the claims. The display control unit 30 corresponds to “remaining capacity acquisition means” and “charge capacity acquisition means” recited in the claims.

(Second embodiment)
The second embodiment of the present invention shown in FIGS. 6 and 7 is a modification of the first embodiment. In the second embodiment, the battery image 250 displayed on the display screen 20a has substantially the same shape as the image 55 instead of the charge capacity image 55 (see FIG. 2) of the first embodiment, and the remaining image A maximum capacity image 255 having a frame shape surrounding the capacity display image 60 is included. The maximum capacity image 255 is formed from the start position 61 when the amount of power that can be charged to the battery 10 (see FIG. 1) is maximum to the end position 69i when the amount of power is maximum. .

  FIG. 6 shows a change in the display mode of the battery image 250 as the amount of power that can be charged in the battery 10 (see FIG. 1) decreases. As the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) decreases, the interval between the start position 61 and the end position 69, which is the extension range of the remaining capacity display image 60, is narrowed. Thus, the display position of the fully charged image 53 is close to the remaining capacity reduced image 51 by narrowing the interval between the start end position 61 and the end position 69. Therefore, the current amount of power that can be charged in the battery 10 is indicated by the interval between the remaining capacity reduced image 51 and the fully charged image 53. On the other hand, the length of the maximum capacity image 255 is kept constant even when the amount of power that can be charged in the battery 10 is reduced. Therefore, the maximum capacity image 255 is a chargeable capacity value of the battery 10 in a non-degraded state, and shows the maximum chargeable capacity value in the battery 10.

  FIG. 7 shows a change in the display mode of the battery image 250 with a decrease in the current remaining capacity in the battery 10 (see FIG. 1) in which the deterioration has occurred. Of the fully charged images 53 provided on the display screen 20a, one of the full charge images 53 aligned with the end position 69 corresponding to the amount of power that can be charged in the current battery 10 is displayed on the display screen 20a. Of the plurality of rectangular images 63, the image positioned in the opposite direction to the remaining capacity reduced image 51 with respect to the fully charged image 53 in the vertical direction is discontinued regardless of the current remaining capacity of the battery 10. Then, when the current remaining capacity value decreases, the display of the plurality of rectangular images 63 is stopped in order from the one closer to the end position 69 than the start end position 61. Thereby, the remaining capacity display image 60 is discretely shortened as the remaining capacity of the battery 10 decreases.

  According to the second embodiment described so far, the current chargeable capacity value in the battery 10 is indicated by the interval between the images 51 and 53, and the maximum chargeable capacity in the battery 10 at the time of a new article is substantially obtained. The value is indicated by the maximum capacity image 255. As described above, by displaying the remaining capacity reduced image 51, the fully charged image 53, and the maximum capacity image 255 in a state that can be compared, the display screen 20a reduces the amount of power that can be charged in the battery 10 due to capacity deterioration. It can be shown to the person more easily.

  In addition, in the second embodiment, since the maximum capacity image 255 has a frame shape surrounding the remaining capacity display image 60, the remaining capacity reduced image 51 and the fully charged image 53 can be more easily compared with the maximum capacity image 255. It becomes. Therefore, a decrease in the amount of electric power that can be charged in the battery 10 due to the capacity deterioration is more easily shown to the driver.

(Third embodiment)
The third embodiment of the present invention shown in FIGS. 8 to 10 is another modification of the first embodiment. In the third embodiment, the configuration of the battery image 350 displayed on the display screen 20a of the liquid crystal display 20 is different from that of the first embodiment. As shown in FIG. 8, the charging capacity image 55 (see FIG. 2) is omitted from the battery image 350. The plurality of rectangular images 63 forming the remaining capacity display image 60 are not images formed by combining the convex image portion 64 (see FIG. 2) and the complementary image portion 65 (see FIG. 2) as in the first embodiment. A simple rectangular image. The remaining capacity display image 60 is formed by arranging rectangular images 63 that are simple rectangles from the start end position 61 toward the end position 69 at a predetermined interval.

  FIG. 9 shows a change in the display mode of the battery image 350 as the current remaining capacity in the battery 10 (see FIG. 1) decreases. The remaining capacity reduced image 51 is displayed side by side with a predetermined start position 61. In addition, one of the plurality of fully charged images 53 arranged along with the end position 69 is displayed on the display screen 20a. The display positions of the remaining capacity reduced image 51 and the fully charged image 53 do not move depending on the decrease in the current remaining capacity value. On the other hand, when the current remaining capacity value decreases, the display of the plurality of rectangular images 63 is stopped in order from the one closer to the end position 69 than the start end position 61. Thereby, the remaining capacity display image 60 is discretely shortened as the remaining capacity of the battery 10 decreases.

  FIG. 10 shows a change in the display mode of the battery image 350 as the amount of power that can be charged in the battery 10 (see FIG. 1) decreases. As the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) decreases, the interval between the start position 61 and the end position 69, which is the extension range of the remaining capacity display image 60, is narrowed. Therefore, the length of the remaining capacity display image 60 displayed when the battery 10 is fully charged is discretely shortened as the capacity of the battery 10 deteriorates. Further, the position where the remaining capacity reduced image 51 is displayed does not move even when the chargeable capacity value decreases. On the other hand, when the chargeable capacity value decreases, the position where the fully charged image 53 is displayed moves so as to be close to the remaining capacity reduced image 51.

  According to the third embodiment described so far, the remaining capacity reduced image 51 and the fully charged image 53 are close to each other as the chargeable capacity value is reduced due to the capacity deterioration of the battery 10. Can indicate to the driver the capacity degradation of the battery 10. In addition, the length of the remaining capacity display image 60 in the fully charged state is shortened by narrowing the interval between the start position 61 and the end position 69 as the capacity deteriorates. Therefore, the remaining capacity of the battery 10 corresponding to the remaining capacity display image 60 having a specific length, for example, one rectangular image 63 can be maintained even when the capacity of the battery 10 is further deteriorated. As described above, the battery image 350 according to the third embodiment can suppress the fluctuation of the remaining battery capacity corresponding to the remaining capacity display image 60 of the specific length while showing the capacity deterioration of the battery 10. Accordingly, even with the battery image 350 having a simple configuration as in the third embodiment, it is possible to improve both the ease of displaying the remaining capacity of the battery 10 and the reduction in discomfort.

(Fourth embodiment)
The fourth embodiment of the present invention shown in FIGS. 11 to 13 is still another modification of the first embodiment. In 4th embodiment, the structure of the battery image 450 displayed on the display screen 20a of the liquid crystal display 20 differs from the thing of the above-mentioned 1st-3rd embodiment.

  As shown in FIG. 11, the charge capacity image 455, the remaining capacity reduced image 51, and the fully charged image 53 of the battery image 450 are provided on the display screen 20a so as to form an image that imitates the shape of the dry battery in cooperation. ing. The charged capacity image 455 is a bar-shaped image displayed from the remaining capacity reduced image 51 to the fully charged image 53 along the remaining capacity display image 60. The fully charged images 53 are substantially the same convex image as the convex image portion 56 (see FIG. 2) in the first embodiment, and a plurality of full charged images 53 are formed on the display screen 20a. The remaining capacity reduced image 51 is an image having a concave shape substantially the same as the concave image portion 57 (see FIG. 2) in the first embodiment. The charge capacity image 455 shows the chargeable capacity value of the battery 10 (see FIG. 1) together with the remaining capacity reduced image 51 and the fully charged image 53. The plurality of rectangular images 63 forming the remaining capacity display image 60 are simple rectangular images similar to those in the third embodiment.

  FIG. 12 shows a change in the display mode of the battery image 450 as the current remaining capacity in the battery 10 (see FIG. 1) decreases. The remaining capacity reduced image 51 is displayed side by side with a predetermined start position 61. In addition, one of the plurality of fully charged images 53 arranged along with the end position 69 is displayed on the display screen 20a. By displaying the charge capacity image 455 between the remaining capacity reduced image 51 and the fully charged image 53, an image indicating the amount of power that can be charged in the battery 10 is formed. On the other hand, when the current remaining capacity value decreases, the display of the plurality of rectangular images 63 aligned with these images 51, 53, and 455 is stopped in order from the one closer to the end position 69 than the start end position 61. Thereby, the remaining capacity display image 60 is discretely shortened as the remaining capacity of the battery 10 decreases.

  FIG. 13 shows a change in the display mode of the battery image 450 as the amount of power that can be charged in the battery 10 (see FIG. 1) decreases. As the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) decreases, the interval between the start position 61 and the end position 69, which is the extension range of the remaining capacity display image 60, is narrowed. Therefore, the length of the remaining capacity display image 60 displayed when the battery 10 is fully charged is discretely shortened as the capacity of the battery 10 deteriorates. Further, when the chargeable capacity value decreases, the interval between the start end position 61 and the end position 69 is narrowed, so that the display position of the fully charged image 53 is close to the remaining capacity reduced image 51. In addition, the length of the charge capacity image 455 is shortened. Therefore, the image imitating the dry battery formed by the images 51, 53, and 455 is shortened in the extending direction of the remaining capacity display image 60.

  According to the fourth embodiment described so far, the battery image 450 can suppress fluctuations in the remaining battery capacity corresponding to the remaining capacity display image 60 having a specific length while indicating the capacity deterioration of the battery 10. Therefore, even in the case of the battery image 450 in which the charge capacity image 455 and the remaining capacity display image 60 are displayed side by side, it is possible to improve both the ease of display of the remaining capacity of the battery 10 and the reduction in discomfort. .

  In addition, in the fourth embodiment, the charge capacity image 455 displayed along the remaining capacity display image 60 can indicate the chargeable capacity value of the battery 10 by its length. As described above, the amount of power that can be charged in the battery 10 is also indicated by the charge capacity image 455, so that the display showing the amount of power that can be charged in the battery 10 is easy to understand even when the remaining capacity display image 60 is short. It can be secured.

(Fifth embodiment)
The fifth embodiment of the present invention shown in FIGS. 14 to 16 is a modification of the fourth embodiment. As shown in FIG. 14, the battery image 550 includes a maximum capacity image 555 instead of the images 51, 53, and 455 of the fourth embodiment, and a remaining capacity reduced image that is substantially the same as that of the first embodiment. 51, a fully charged image 53, and a remaining capacity display image 60. The maximum capacity image 555 is provided on the display screen 20a so as to form an image imitating the shape of a dry battery. The maximum capacity image 555 is an image showing the maximum chargeable capacity value in the battery 10 (see FIG. 1). The maximum capacity image 555 is arranged in the horizontal direction from the position aligned in the horizontal direction with the start position 61 when the amount of electric power that can be charged in the battery 10 is the maximum, in the horizontal direction with the end position 69i in the case where the electric energy is the maximum. It extends along the remaining capacity display image 60 to the place. As described above, the maximum capacity image 555 is located on the side opposite to the end position 69i across the fully charged image 53 in the horizontal direction from the position opposite to the start end position 61 across the remaining capacity reduced image 51 in the horizontal direction. It extends to the place.

  FIG. 15 shows a change in the display mode of the battery image 550 as the amount of power that can be charged in the battery 10 (see FIG. 1) decreases. As the chargeable capacity value acquired by the display control unit 30 (see FIG. 1) decreases, the display position of the fully charged image 53 remains as a result of the interval between the start position 61 and the end position 69 being narrowed. Close to the capacity-reduced image 51. Therefore, the current amount of power that can be charged in the battery 10 is indicated by the interval between the remaining capacity reduced image 51 and the fully charged image 53. On the other hand, the length of the maximum capacity image 555 is kept constant even when the amount of power that can be charged in the battery 10 is reduced. Therefore, the maximum capacity image 555 is a chargeable capacity value of the battery 10 in a non-degraded state, and indicates the maximum chargeable capacity value in the battery 10.

  FIG. 16 shows a change in the display mode of the battery image 550 accompanying a decrease in the current remaining capacity in the battery 10 (see FIG. 1) in which deterioration has occurred. Of the fully charged images 53 provided on the display screen 20a, one of the full charge images 53 aligned with the end position 69 corresponding to the amount of power that can be charged in the current battery 10 is displayed on the display screen 20a. Of the plurality of rectangular images 63, the image positioned in the opposite direction to the remaining capacity reduced image 51 with respect to the fully charged image 53 in the vertical direction is discontinued regardless of the current remaining capacity of the battery 10. Then, when the current remaining capacity value decreases, the display of the plurality of rectangular images 63 is stopped in order from the one closer to the end position 69 than the start end position 61. Thereby, the remaining capacity display image 60 is discretely shortened as the remaining capacity of the battery 10 decreases.

  In the fifth embodiment described so far, the remaining capacity reduced image 51, the fully charged image 53, and the maximum capacity image 555 are displayed alongside the remaining capacity display image 60. Therefore, the current chargeable capacity value of the battery 10 and the maximum chargeable capacity value of the battery 10 in a state where the battery 10 is not deteriorated are displayed on the display screen 20a in a state where they can be easily compared. Therefore, a decrease in the amount of electric power that can be charged in the battery 10 due to the capacity deterioration is more easily shown to the driver.

(Other embodiments)
Although a plurality of embodiments according to the present invention have been described above, the present invention is not construed as being limited to the above embodiments, and can be applied to various embodiments and combinations without departing from the gist of the present invention. can do.

  In the above embodiment, the display control unit 30 calculates the current remaining capacity value from at least one of the voltage and current information as the remaining capacity information acquired from the power management control device 13. However, the configuration for calculating the subtraction remaining capacity value may be either the power management control device or the display control unit. For example, the display control unit may be configured to acquire a remaining capacity value indicating the current remaining capacity of the battery calculated by the power management control device through the in-vehicle LAN.

  In the above embodiment, the display control unit 30 acquires the chargeable capacity information calculated and output by the power management control device 13 as a chargeable capacity value. However, the configuration for calculating the chargeable capacity value may be either the power management control device or the display control unit. For example, the power management control device is configured to output the measurement result of at least one of the voltage and the current when the amount of power charged in the battery is maximized to the in-vehicle LAN. The display control unit may acquire the capacity value by calculating the chargeable capacity value based on the measurement result received through the in-vehicle LAN.

  In the embodiment described above, the display control unit 30 acquires at least one of the voltage and current of the battery 10 as the remaining capacity information. Thus, the remaining capacity information for the display control unit to acquire the current remaining capacity value of the battery may be appropriately changed according to the type of the battery and the like. For example, when a lithium ion battery is mounted as a battery for traveling, the display control unit accurately calculates the current remaining capacity value of the battery by receiving voltage information of the battery from the power management control device. Can be acquired.

  In the above embodiment, the segment type liquid crystal display 20 is used as the display means. However, various display devices can be used as display means for displaying a battery image. For example, the display means may be a dot matrix type liquid crystal display or a plasma display panel. In this embodiment, the display control unit preferably stores image data used for drawing the battery image in the flash memory and has a graphic RAM as a work area for drawing the battery image. Further, the display means may be a so-called head-up display device that displays a virtual image of the battery image superimposed on the driver's field of view.

  In the above embodiment, the remaining capacity display image 60 is an image extending along the vertical direction of the display screen 20a. However, the display form of the remaining capacity display image is not limited to that of the above embodiment. For example, the remaining capacity display image may be an image that extends along the horizontal direction of the display screen. Alternatively, the remaining capacity display image may be an image that extends in a circular arc around a specific point on the display screen.

In the above embodiment, as the chargeable capacity value of the battery decreases, the predetermined end position 69 is moved toward the start end position 61, thereby narrowing the interval therebetween. However, both the end position and the start position may be movable. Alternatively, these intervals may be narrowed by moving the start position toward the end position.

  In the above embodiment, the length of the remaining capacity display image 60 is changed stepwise as the current remaining capacity value decreases. However, for example, in a form using a dot matrix type liquid crystal display as the display means, the length of the remaining capacity display image may change continuously as the current remaining capacity value decreases.

  The charge capacity image 55 in the first embodiment and the maximum capacity image 255 in the second embodiment were formed in a frame shape surrounding the remaining capacity display image 60. In addition, in the first to third and fifth embodiments, the remaining capacity reduced image 51 and the fully charged image 53 are images imitating characters. However, the forms of the charge capacity image, the maximum capacity image, the remaining capacity reduced image, and the fully charged image may be changed as appropriate.

  In the fifth embodiment, the maximum capacity image 555 is formed on the opposite side of the remaining capacity display image 60 across the remaining capacity reduced image 51 and the fully charged image 53 in the horizontal direction. However, the arrangement of the maximum capacity image in the battery image may be changed as appropriate. For example, the remaining capacity reduced image and the charged capacity image may be arranged on the opposite side of the maximum capacity image across the remaining capacity display image in the horizontal direction.

  In the above embodiment, even when the amount of power that can be charged in the battery 10 is about 30 to 40% of the initial value, the battery image 50 can be charged with the battery 10 whose capacity has deteriorated by moving the terminal position 69. The capacity could be shown. However, the range of capacity deterioration that can display the battery image may be changed as appropriate. For example, a threshold value of a state of health (SOH) of a battery that does not hinder traveling is set in advance. Then, it is desirable that the range of the chargeable capacity at which the battery image can be displayed is set so that the chargeable capacity can be displayed as long as the battery capacity deterioration does not exceed the threshold. In addition, when capacity degradation deteriorates exceeding a threshold value, the display apparatus for vehicles may display the warning image which warns a driver to that effect.

  The display control unit 30 of the above embodiment calculates the current remaining capacity value from at least one of the voltage and current of the battery 10. In addition to this, the display control unit may acquire the current temperature information of the battery from, for example, the power management control device, and correct the current remaining capacity value. Specifically, the display control unit may correct the current remaining capacity value so that the current remaining capacity value decreases as the battery temperature decreases.

  In the above-described embodiment, when the display control unit 30 executes a predetermined program, the functions such as “remaining capacity acquisition unit”, “charge capacity acquisition unit”, and “display unit” described in the claims include: It was fulfilled. However, the functions corresponding to these means may be performed by a plurality of circuits or devices. In addition, these circuits or devices may be configured to perform a predetermined function by executing a program such as the display control unit 30 of the above embodiment, or may be configured to perform a predetermined function without depending on the program. There may be.

DESCRIPTION OF SYMBOLS 10 Battery (secondary battery), 13 Power management control apparatus, 20 Liquid crystal display (display means), 20a Display screen, 30 Display control part (remaining capacity acquisition means, charge capacity acquisition means, display means), 33 Characteristics of remaining capacity Data, 50, 250, 350, 450, 550 Battery image, 51 Remaining capacity reduced image, 53 Fully charged image, 55, 455 Charge capacity image, 255, 555 Maximum capacity image, 56 Convex image part, 57 Concave image part, 58 Bar-shaped image portion, 60 remaining capacity display image, 61 start position, 63 rectangular image, 64 convex image portion, 65 complementary image portion, 69 end position, 100 display device for vehicle

Claims (9)

A vehicle display device mounted on a vehicle together with a chargeable / dischargeable secondary battery for displaying the remaining capacity of the secondary battery,
A remaining capacity acquisition means for acquiring a current remaining capacity in the secondary battery as a current remaining capacity value;
Charging capacity acquisition means for acquiring the amount of power that can be charged in the secondary battery as a chargeable capacity value;
A remaining capacity display image showing the current remaining capacity of the secondary battery by extending from the start position to the end position by a length corresponding to the current remaining capacity value, formed side by side with the start position. A remaining capacity reduction image indicating a decrease in the remaining capacity of the secondary battery, and a fully charged image formed side by side with the end position and indicating that the secondary battery is in a fully charged state, and the chargeable capacity value is Display means for narrowing the interval between the start position and the end position as it decreases,
A vehicle display device comprising:   The vehicle display device according to claim 1, wherein the display unit brings the end position closer to the start end position as the chargeable capacity value decreases.   The said display means displays the charge capacity image which shows the said chargeable capacity | capacitance value of the said secondary battery by being formed from the said start end position to the said end position, The Claim 1 or 2 characterized by the above-mentioned. Vehicle display device.   The vehicle display device according to claim 3, wherein the charge capacity image has a frame shape surrounding the remaining capacity display image.   The display means indicates the maximum chargeable capacity value in the secondary battery by being formed from the start position to the end position when the amount of power that can be charged in the secondary battery is maximum. The vehicle display device according to claim 1, wherein a maximum capacity image is displayed.   The vehicle display device according to claim 5, wherein the maximum capacity image has a frame shape surrounding the remaining capacity display image.   The display means displays a charge capacity image indicating the chargeable capacity value of the secondary battery by forming from the remaining capacity reduced image to the fully charged image along the remaining capacity display image. The vehicle display device according to claim 1 or 2.   The display means extends along the remaining capacity display image from a position aligned with the start position to a position aligned with the end position when the amount of power that can be charged to the secondary battery is maximum. The vehicle display device according to claim 1, wherein a maximum capacity image indicating the maximum chargeable capacity value in the secondary battery is displayed.   The vehicle display device according to any one of claims 1 to 8, wherein the length of the remaining capacity display image changes discretely as the current remaining capacity value decreases.

Images