JP2003252131A - Power supply device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply device for a vehicle that requires little labor in mounting option equipment requiring a control signal on the vehicle, and can be easily mounted only by connecting a power supply part inside the cabin. <P>SOLUTION: The power supply device 10 for the vehicle is connected to a +B power source 11, an ACC power source 12, and an IG power source 13 mounted to the vehicle, and has an option socket 15 capable of supplying power to the option equipment 14 mounted to the vehicle inside the cabin. The power supply device 10 has a power source multiple interface 19 that is disposed on the power source 11, 12, and 13 sides than the option socket 15 and superposes control signals 16 and 17 inputted to the option equipment 14 on a power line 18 for supplying power to the option socket 15. The power supply device 10 also has a power source multiple connector 21 that is disposed on the option equipment 14 side than the option socket 15 and extracts the control signals 16 and 17 superposed on a power line 20 for supplying power from the option socket 15 to the option equipment 14, demodulates them, and transmits them to the option equipment 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device capable of superimposing a control signal, which is transmitted from an option socket of a vehicle, to an option device to which power is supplied, on a power line and transmitting the control signal.

[0002]

2. Description of the Related Art An optional socket (electric power supply portion) such as a cigarette lighter is provided in a vehicle interior of a vehicle. The optional socket is used as a power extraction socket in the vehicle interior by inserting an adapter. ing. As an example of this, Japanese Patent Laid-Open No. 2000-1
As disclosed in Japanese Patent No. 14841, as shown in FIG.
By inserting the adapter 3 connected via the power supply line 6 into the cigarette lighter 2 as a power source of the mobile phone 1
The configuration for extracting the power of the cigarette lighter 2 is described.

[0003] The cigarette lighter 2 of the publication is
An antenna 5 is connected through an antenna wire 4, and a signal received by the antenna 5 can be transmitted to the mobile phone 1 through the cigarette lighter 2, the adapter 3 and the power supply line 6, and the cigarette lighter 2 and the adapter 3 can be transmitted. Just connect to the power supply and antenna can be used at the same time.

[0004]

However, when the signal received by the antenna 5 is transmitted to the mobile phone through the power line as described above, the antenna 5 is received by the antenna line 4 in the cigarette lighter 2. Although it is possible to send signals, it is not possible to simply send control signals to this optional device, such as a navigation unit, which is mounted on the vehicle afterwards, through the electric wire connected to the cigarette lighter. .

In such a case, the cigarette lighter 1
In addition to the power line from, the wires for transmitting the control signal input to the optional equipment are also required, so the number of wires is large and the effort to install these wires is also required.
When an optional device that requires a control signal is mounted on a vehicle, it often takes time and the mountability is poor. Further, in addition to electric power, a signal line is also required, which causes a problem that the vehicle weight becomes heavy.

Therefore, the present invention does not require time and effort to mount an optional device requiring a control signal in a vehicle, and can be easily mounted by simply connecting to an electric power supply section inside the vehicle. An object is to provide a vehicle power supply device.

[0007]

In order to achieve the above object, the invention of claim 1 is connected to a power source mounted on a vehicle and supplies electric power to an optional device mounted on the vehicle inside the vehicle. A power supply device for a vehicle having a possible power supply unit, wherein a control signal provided on the power supply side of the power supply unit and input to the option device is superimposed on a power line that supplies power to the power supply unit. And a power supply multiplex interface and the control signal provided on the side of the option device from the power supply unit and superposed on a power line for supplying power from the power supply unit to the option device, demodulates, and transmits to the option device. And a power supply multiple connector.

In this vehicle power supply device, by connecting an optional device to the power supply unit, the power for driving the optional device is supplied from the power supply unit.
At the same time, the control signal superimposed on the power line by the power supply multiplex interface is sent to the power supply multiplex connector via the power supply unit, and the power supply multiplex connector extracts the control signal superimposed on the power line, demodulates it, and sends it to the optional device. To do. Therefore, it is possible to supply electric power and transmit a control signal simply by connecting the optional device to the power supply unit, and the optional device can be mounted in the vehicle without increasing the number of electric wires.

In this case, the power supply multiplex interface may be provided on the power supply side of the power supply unit, for example, in the junction box for branching the power supply from the battery or in the vicinity of the power supply unit. Also, if a power supply multiplex interface is provided near the power supply unit, a signal line for transmitting a control signal to be input to this power supply multiplex interface is required, but by providing it inside the junction box, the junction box and power supply Since the control signal can be superimposed on the electric power line between the unit and the unit, the length of the signal line can be shortened accordingly.

According to a second aspect of the present invention, there is provided the vehicle power supply device according to the first aspect, wherein the power source multiplex interface is connected to a power source mounted on a vehicle and a plurality of power sources branched from the power source. Is selected in a timely and required amount, the situation is converted into a signal, and the signal is superimposed on the power line, and then power is supplied to the power supply unit, and the input control signal is supplied to the power supply unit. And an electric power supply unit that supplies driving power to the interface control unit, and the power supply multiplex connector is superposed on the electric power line that supplies electric power from the electric power supply unit to the optional equipment. A connector control unit that extracts the control signal, demodulates it, and sends it to an optional device, and a signal indicating the power source selection status received by the connector control unit. A semiconductor switch operated by Zui, characterized by comprising a power supply unit for supplying drive power to the connector controller.

In this vehicular power supply device, the interface control section selects only the required amount of time, converts the situation into a signal, superimposes the signal on the power line, and then connects the power source to the connector via the power supply section. Power is supplied to the control unit, and the semiconductor switch is operated according to the power source selected by the connector control unit to supply power to the optional equipment connected to the power supply unit. Further, the control signal input to the interface control unit is superimposed on the power line to which the power source selected by the interface control unit supplies power, and is transmitted from the power supply unit to the connector control unit of the power supply multiplex connector. The connector control unit takes out the control signal superimposed on the power line, demodulates it, and transmits it to the option device. Therefore, similarly to claim 1, it is possible to supply electric power and transmit a control signal only by connecting the optional device to the power supply unit, and the optional device is mounted on the vehicle without increasing the number of electric wires. can do.

The invention according to claim 3 is claim 1 or claim 2.
The vehicle power supply device according to claim 1, wherein the power supply unit is an optional socket provided in a vehicle compartment, the control signal is a signal from a sensor or a signal from a switch, and the power supply multiplex interface is a vehicle. It is characterized in that it is provided in a junction box for branching a power supply, and a power supply multiple connector is provided between an option device and an option socket.

When the power line of the option device is connected to the option socket, power is supplied from the power source selected by the power source multiplex interface to the option device via the power source multiplex connector. Signals input to the option device by the power supply multiplex interface are superimposed on the power line to which this power is supplied, and these control signals are transmitted to the power supply multiplex connector. The power supply multiplex connector transmits power to the option device and also transmits a control signal extracted from the power line and demodulated.

Therefore, in the case where the optional equipment is retrofitted to the vehicle, it is possible to deal with it by simply connecting the power line to the optional socket.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a vehicle power supply device according to the present invention will be described below. FIG. 1 is a block diagram showing a configuration of a power supply device 10 according to an embodiment of the present invention,
2 is a block diagram showing the configuration of the power supply multiplex interface 19 used in the power supply apparatus 10, and FIG. 3 is a block diagram showing the configuration of the power supply multiplex connector 21 used in the power supply apparatus. 4 (a) and 4 (b) show signal waveforms transmitted by the power line.

As shown in FIG. 1, the power supply apparatus 10 of the present embodiment is a + B power source 11 directly from a battery (not shown) which is a power source mounted on a vehicle, and the + B power source 11
Is connected to a plurality of power sources (ACC power source 12 and IG power source 13) branched from the power source, and is an option as a power supply unit capable of supplying power to the option device 14 as an optional device mounted on the vehicle inside the vehicle. Socket 15
have.

Further, in the power supply device 10 of the present embodiment, the power supply multiplex is provided on the power source side of the option socket 15 and superimposes the control signals 16 and 17 to the option device 14 on the power line 18 which supplies power to the option socket 15. Interface 19 and optional socket 15
A power supply multiplex connector 21 for extracting control signals 16 and 17 superimposed on a power line 20 that supplies power from the option socket 15 to the option device 14 and is demodulated and transmitted to the option device 14
And have.

The power supply multiplex interface 19 is
Fuse box 23 in junction box 22
Is connected to the option socket 15 via the fuse 34. The power supply multiple connector 21 is provided on the side of the option device 14 and is connected to the power line 20 via an adapter 24 fitted in the option socket 15. In FIG. 1, reference numeral 26 is a ground line (G
ND) is shown. In addition, in the present embodiment, the power line carrier communication method (PLC: Po) in which the power is transmitted through the power line and the control signal is superimposed (multiplexed) and transmitted on the power line.
wer Line Communucation) has been adopted.

As shown in FIG. 2, the power supply multiplexing interface 19 includes a + B power supply 11, an ACC power supply 12, and an IG power supply 1.
3 and these are selected in a timely and necessary amount, the situation is converted into a signal, the signal is superimposed on the power line 18, and then power is supplied from the power supply to the option socket 15 and the input control signal 16 , 17 on the power line 18 for supplying power to the option socket 15, and an interface control unit 27 for supplying drive power to the interface control unit 27.

The ACC power source 12 and the IG power source 13 are input to the interface control unit 27, and the + B power source 11 is connected to the fuse box 23 without being input to the interface control unit 27, and is directly connected to the option socket 15 as it is. It is connected. In addition, the signal (SSR) 16 from the sensor 29 and the signal (SSR) from the switch 30
W) 17 is input to the interface control unit 27, superposed on the power line 18 connected to the power source selected by the interface control unit 27, and transmitted to the option socket 15 side.

As shown in FIG. 3, the power supply multiple connector 21.
Is the control signal 1 superimposed on the power line 20 that supplies power from the option socket 15 to the option device 14.
A connector control unit 31 for taking out and demodulating 6 and 17 and transmitting them to the option device 14, a semiconductor switch 32 operated according to the power supply selected by the connector control unit 31, and a power supply for supplying drive power to the connector control unit 31. And part 33. In addition, the connector control unit 31 has a + B power source 1
1, the ACC power supply 12, and the power line 20 connected to the IG power supply 13 are connected, and the + B power supply 11 and the ACC power supply 12 are supplied to the option device 14 by operating the power supply selected by the connector control unit 31 with the semiconductor switch 32. , IG power source 13 supplies power as required. Further, the control signals 16 and 17 superimposed on the power line 20 are taken out and demodulated by the connector control unit 31, and the optional device 14
Sent to.

FIGS. 4A, 4B and 4C show transmission waveforms transmitted by the power line. FIG. 4A shows a voltage waveform of +12 V as a power line. FIG. 4B shows A
Power supply selection signal (Signal A when selecting CC power supply 12
Are continuously superimposed after a predetermined time) is the power line 1
5 shows the voltage waveform superimposed on FIG. In addition, FIG.
Power supply selection signal (Signal A, when selecting the G power supply 13
Signal B is alternately and continuously superposed for a predetermined time) indicates a voltage waveform superposed on the power line 15.

Regarding the method of transmitting and receiving a signal in the power supply device 10, during transmission, it is assumed that the transmitting side continues to transmit the signal while the transmitting side continues to transmit the signal, and at the end, the signal is cut off from the time when the signal is cut off. It is assumed that the stop of transmission is confirmed by confirming that the state has continued for a predetermined time.

Next, the operation of the power supply device 10 having the above structure will be described.

As described above, the power line 18 is the + B power source 1
1 is always connected to the option socket 15 and electric power is supplied to the option socket 15 via the fuse 34. The + B, ACC, and IG power supplies are input to the power supply multiplex interface 19 depending on the key position. In the case of + B power supply, the interface control unit 27 in the power supply multiplex interface 19 does not generate a signal. As a result, since the connector control unit 31 in the power supply multiplex connector 21 has no signal, the current situation is + B.
Recognize the power source and operate the semiconductor switch 32 to + B
Open the power switch. The connector control unit 31 in the power supply multiple connector 21 has a timer function,
It has a function to automatically turn off the power when it recognizes that it is the B power supply for a certain period of time.

In the case of the ACC power source, the interface control unit 27 of the power source multiplex interface 19 generates an ACC signal and superimposes it on the power line 18. Accordingly, the connector control unit 31 of the power supply multiplex connector 21 recognizes that the current state is the ACC power supply state by receiving the ACC signal,
The semiconductor switch 32 is operated to open the switch of the ACC power supply. Further, in the case of the IG power supply, the same operation as the ACC power supply is performed.

Further, a control signal 1 such as a speed signal or a parking signal
Regarding 6 and 17, the power supply multiplex interface 19 receives the signals 16 and 17 necessary for operating the option device 14 from the respective sensors 29 and 30, and superimposes the signals on the power line. As a result, the connector control unit 31 in the power supply multiplex connector 21 receives the signals 16 and 17 and outputs them to the option device 14.

According to the power supply device 10 of this embodiment,
As described above, by connecting the option device 14 to the option socket 15, power supply and control signal 1
6 and 17 can be transmitted, and the optional device 14 can be installed in the vehicle without increasing the number of electric wires.

In the above embodiment, the power supply multiplex interface 19 may be provided on the power supply side of the option socket 15, for example, in the junction box 22 for branching the power supply from the battery or in the vicinity of the option socket 15. good.

In this case, if the power supply multiplex interface 19 is provided in the vicinity of the option socket 15, a signal line for transmitting a control signal for inputting to the power supply multiplex interface 19 is required.
Since the control signal can be superimposed on the electric power line 18 between the junction box 22 and the option socket 15 by providing the signal line in the second box 2, the length of the signal line can be shortened accordingly.

In the above embodiment, the example in which the option socket 15 is used as the power supply unit has been described, but a cigarette lighter may be used as the power supply unit.

[0032]

As described above, according to the first aspect of the present invention, it is possible to connect the optional equipment to the power supply unit.
Electric power can be supplied and control signals can be transmitted, and an optional device can be mounted on a vehicle without increasing the number of electric wires. Also, if a power supply multiplex interface is provided near the power supply unit, a signal line for transmitting a control signal to be input to this power supply multiplex interface is required, but by providing it inside the junction box, the junction box and power supply Since the control signal can be superimposed on the electric power line between the unit and the unit, the length of the signal line can be shortened accordingly.

According to the invention of claim 2, similarly to the invention of claim 1, the power supply and the control signal transmission can be performed only by connecting the optional equipment to the power supply section.
Optional equipment can be installed in the vehicle without increasing the number of electric wires.

According to the third aspect of the present invention, when the optional equipment is retrofitted in the vehicle, the electric power can be supplied and the control signal can be sent only by connecting the power line to the optional socket. Can be received.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a power supply device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a power supply multiplex interface.

FIG. 3 is a block diagram showing a configuration of a power supply multiple connector.

FIG. 4 shows a voltage waveform transmitted by a power line,
(A) is a voltage waveform showing a power supply voltage, and (b) and (c) are voltage waveforms showing a state in which a signal is superimposed on a power line.

FIG. 5 is a block diagram showing a power supply device that connects a conventional cigarette lighter and a junction box.

[Explanation of symbols]

10 Power supply device 11 + B power supply 12 ACC power supply 13 IG power supply 14 Optional equipment 15 Optional socket (power supply section) 16 Control signal 17 Control signal 18, 20 power lines 19 Power supply multiplex interface 20 power lines 21 Power supply multiple connector

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryoji Kawakami             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. F term (reference) 5K046 AA03 BA03 BB05 CC05 CC17                       PP02

Claims (3)

[Claims] 1. A power supply device for a vehicle, comprising: a power supply unit connected to a power supply mounted on the vehicle; and capable of supplying power to an optional device mounted on the vehicle inside the vehicle interior. A power supply multiplex interface provided on the power supply side of the power supply unit for superimposing a control signal input to the optional device on a power line supplying power to the power supply unit; and the power supply unit provided on the option device side of the power supply unit, A power supply device for a vehicle, comprising: a power supply multiplex connector that extracts the control signal superimposed on a power line that supplies power from the power supply unit to the option device, demodulates the control signal, and transmits the demodulated control signal to the option device. 2. The power supply apparatus for a vehicle according to claim 1, wherein the power supply multiplex interface is connected to a power supply mounted on a vehicle and a plurality of power supplies branched from the power supply, and these are connected as necessary and timely. Only to select and convert the situation into a signal, superimpose the signal on the power line, and then supply power to the power supply unit, and input the control signal to the power line that supplies power to the power supply unit. An interface control unit to be superposed and a power supply unit for supplying driving power to the interface control unit, and the power supply multiplex connector extracts the control signal superposed on a power line for supplying electric power from the power supply unit to the optional equipment. Which is operated based on a connector control unit for demodulating and transmitting to an optional device and a signal indicating a power supply selection signal received by the connector control unit A vehicle power supply device comprising a semiconductor switch and a connector power supply unit that supplies drive power to the connector control unit. 3. The vehicle power supply device according to claim 1 or 2, wherein the power supply unit is an optional socket provided in a vehicle compartment, and the control signal is from a signal from a sensor or a switch. The power supply multiplex interface is provided in a junction box for branching the power supply of the vehicle, and the power multiplex connector is provided between the option device and the option socket. .