Motor vehicle with indication of a state of charge of an energy storage device

Abstract

A motor vehicle includes an energy storage device which can be charged by connecting a charge cable to a vehicle-sided terminal device, and an optical lighting device which indicates the ongoing charging process or at least the complete charge status of the energy storage device. A blinker light provided on the side of the vehicle on which the terminal device is located, is used as lighting device.

Claims

1. A motor vehicle, comprising: an energy storage device chargeable through connection of a charging cable to a vehicle-mounted terminal device; and an optical lighting device constructed to indicate an ongoing charging process or at least a full state of charge of the energy storage device, said optical lighting device being adapted to issue a first light signal to indicate the ongoing charging process, and a different second light signal to indicate the full state of charge, when the charging cable is connected, and also a third light signal to indicate a normal flashing operating mode of the optical lighting device non-related to the charging process, when the charging cable is disconnected, said optical lighting device configured as an external blinker light outside the motor vehicle issuing direction signals on a side of the motor vehicle, which optical lighting device is configured to issue the first light signal indicative of the ongoing charging process, the second light signal which is indicative of the full state of charge, and the third light signal non-related to the charging process which is a directional flashing signal of a normal typical flashing operation of the blinker light of the motor vehicle, so that no additional optical lighting device is needed to indicate the ongoing charging process or at least the full state of charge of the energy storage device.

2. The motor vehicle of claim 1, wherein the first signal is a flashing signal and the second signal is a constant light signal.

3. The motor vehicle of claim 1, wherein the first and second light signals differ in the color of light.

4. The motor vehicle of claim 3, wherein the first light signal has a red light color and the second light signal has a green light color.

5. The motor vehicle of claim 1, wherein the third light signal has a color of light which corresponds to a light color of a flashing signal generated by the blinker light in the normal operating mode.

6. The motor vehicle of claim 1, wherein the blinker light includes one or more four-color light-emitting diodes or red-green-blue light-emitting diodes for issuance of the first and second light signals.

7. The motor vehicle of claim 1, wherein said optical lighting device simultaneously configured as the blinker light of the motor vehicle issues the first light signal indicative of the ongoing charging process and having a changing flashing frequency during the ongoing charging process.

8. The motor vehicle of claim 1, wherein said optical lighting device simultaneously configured as the blinker light of the motor vehicle issues the first light signal indicative of the ongoing charging process and having a changing flashing frequency during the ongoing charging process such that when the energy storage device is fairly empty the blinker light flashes at a relatively low frequency and as a charging process progresses and stored energy increases the flashing rate increases.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) Further advantages, features and details of the invention will become apparent from the exemplary embodiment described hereinafter as well as with reference to the drawing. It is shown in:

(2) FIG. 1 the principal illustration of a motor vehicle according to the invention,

(3) FIG. 2 a principal illustration for the operation of the blinker light during the ongoing charging process,

(4) FIG. 3 a principal illustration for the operation of the blinker light, when the full state of charge has been reached, and

(5) FIG. 4 a principal illustration for the operation of the blinker light, when the charging cable is disconnected.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(6) FIG. 1 shows a motor vehicle 1 according to the invention, including an energy storage device 2 in the form of a suitably sized accumulator and a charging port device 3 to which in the exemplary embodiment shown here a charging cable 4 is connected via a suitable plug 5. The charging cable 4 is connected to a power source 6, not shown in greater detail, so that the energy storage device 2 can be charged via the charging cable 4.

(7) Further provided is a control device 7 for controlling the lighting operation of various blinker lights, namely the front blinker light 8, the rear blinker light 9, and the side blinker light 11 located in the side mirror 10. The control device 7 further communicates (directly or indirectly via other control devices which are not shown here in greater detail) with the energy storage device 2 and receives corresponding information about the state of charge of the energy storage device 2, i.e. whether the latter is charged only partially or completely. The control device communicates further with the charging port device 3 and can ascertain whether a charging cable 4 is attached and a charging process is in progress.

(8) The control device 7 now signals to the user in conjunction with at least one of the blinker lights 8, 9 or 11, that the charging process is in progress and/or that the full state of charge is detected, and it is also, optionally, possible to visualize to the user that after completion of the charging process, when the charging cable 4 is disconnected, the blinker lights, including the control device 7, return to the normal mode, in which the normal, typical flashing operation can take place.

(9) FIG. 2 shows a principal illustration of the situation in which the charging cable 4 is plugged into the charging port device 5, since the energy storage device 2 is not full; the charging process is in progress. The control device 7 has detected the connection of the charging cable 4, which automatically results in a change to an appropriate indication mode by causing at least one of the blinker lights 8, 9 or 11 to issue corresponding light signals to inform the user. The control device further queries continuously the state of charge of the energy storage device 2 so as to know the percentage of how much the energy storage device 2 is charged.

(10) Immediately with the start of the charging process, the control device 7 activates a respective lighting element 12 of one of the blinker lights 8, 9 or 11, for example, the blinker light 11 located in the side mirror 10, so that a first light signal is issued. The lighting element 12, shown here as symbolized light bulb, flashes hereby. The lighting element 12 preferably involves an LED, preferably an RGB LED, which allows the combination of random colors. The light color, in which this light signal is emitted to visualize the ongoing charging process, is red in the illustrated exemplary embodiment. This means that as long as the charging process is in progress, i.e. the energy storage device 2 is not yet fully charged, the light element 12 of the blinker light 11 flashes red for example. The frequency can be constant, but may also increase as the degree of charging of the energy storage device 2 increases, i.e. flashing becomes slightly faster to indicate to the user that the end of charging process is near.

(11) Once the full state of charge has been reached, the type of the light signal, issued by the lighting element 12, changes from the first light signal shown in FIG. 2 to a second light signal shown in FIG. 3. The control device 7 detects the full state of charge of the energy storage device 2. Concurrently with detection, the control device 7 activates the respective lighting element 12, i.e., for example, the RGB LED, so that a constant light signal is issued, i.e. the lighting element 12 is lit continuously, and furthermore a switchover to a second light color, here green, is implemented. This solid green light signals to the user that the charging process is now complete.

(12) Finally, FIG. 4 shows the situation, when, after successfully completing charging, the charging cable 4 is disconnected, as shown by the arrow. The control device 7 immediately detects the removal of the charging cable 4. This detection causes it to change back again to the normal “blinker light operating mode” in which the blinker lights 8, 9 and 11 emit respective direction signals, when the blinker lever is actuated. To signal this to the user, i.e. that the “charge indicator mode” has been exited, the lighting element 12 is respectively activated by the control unit 7 for a third time. For example, the control device, after causing previously the issuance of a constant green light signal, now issues again a flashing signal with orange light color. This means that the lighting element 12 lights up briefly, for example, three times or five times and intensely orange to signal to the user that the control device 7 again assumes the normal flashing mode.

(13) In the event, the charging cable 4 is disconnected before the full state of charge has been reached, the control device 7 would change from the operating mode shown in FIG. 2, in which the ongoing charging process is visualized by emitting a red flashing light, immediately to the issuance of an orange flashing light which is emitted only a few times and shown in FIG. 4, i.e. the state shown in FIG. 3, since not realized, is skipped.

(14) Of course, it is conceivable to issue the corresponding signals not only via one of the blinker lights 8, 9 or 11, but at the same time via all of them. The lighting elements provided there would thus all light up in synchronism and at the same frequency, and with the same color, depending on the type of light signal to be issued.

(15) Thus, the signaling elements that already exist anyway on the vehicle, namely the built-in blinker lights, are used. By equipping them with LEDs that generate respectively different colors, the corresponding changes in color can easily be implemented.

(16) In the event that no color LEDs are installed, but simple white or orange lighting elements, the diversification of the individual different signals, described in FIGS. 2-4 can be realized solely via the light frequency. For example, indication of the ongoing state of charge according to FIG. 2 can be realized with relatively low flashing rate. The indication of the full state of charge can be realized with a steady light. The indication of a change from the “charging indication mode” again to the normal “flashing mode”, as implemented by the control device 7, can be visualized by very intense flashing with very short flashing frequency.