JP2000262063A - Feed system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a feed system for a vehicle which controls unnecessary consumption of electric power. SOLUTION: A door 10 for a vehicle is provided with blinkers 36 and a plurality of loads such as a DEF 18. Electric power lines are connected between the door 10 and a vehicle body 11 by electromagnetic induction of primary and secondary coils 29, 26. An FET 50 is also provided between an inverter 35, which excites the primary coil 29 and a battery 34. When any of the loads on the door 10 is in a stop state, the voltage supply to the gate of the FET 50 is stopped to stall the inverter 35. As a result, unnecessary consumption of electric power is restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system for controlling power supply to a plurality of loads provided on a vehicle body.

[0002]

2. Description of the Related Art For example, a vehicle door mounted on a vehicle body is provided with a plurality of loads such as a blinker and a wiper motor, and a switch provided on a power line to the loads is turned on and off by a driver. The load is selectively driven. In recent years, an electromagnetic induction type connector including both a primary coil and a secondary coil is provided at a coupling portion between a harness such as a vehicle door and a harness of a vehicle body, and the primary coil is connected to an inverter connected to a battery provided in the vehicle body. A power supply system that supplies power to the secondary coil side by excitation has been adopted. In this power supply system, the inverter is constantly driven, and power is not supplied to each load by a switch provided for each load.

[0003]

However, in the conventional power supply system described above, since the inverter is constantly driven, there is a problem that heat is generated due to energy loss. The present invention has been made in view of the above circumstances, and has as its object to provide a power supply system in which unnecessary power consumption is suppressed.

[0004]

In order to achieve the above object, an invention according to claim 1 is provided with an inverter connected to a power supply device provided in a vehicle, in which both primary and secondary coils are provided in a power line of the vehicle. By exciting the primary coil, power is supplied from the primary side to the secondary side, and a plurality of loads are respectively connected in parallel to the secondary coil via the switch means, and the operation of the operation means for turning on and off the switch means In a power supply system in which a plurality of loads can be selectively switched between a driving state and a stopped state by using a power supply system, an inverter stopping means for stopping an inverter when any of the loads is stopped is provided. .

According to a second aspect of the present invention, in the power supply system according to the first aspect, the secondary coil, the plurality of loads, and the switch means are arranged on a vehicle body assembled to the vehicle body, while the primary coil and the plurality of loads are arranged on the vehicle body. The power supply device and the inverter are arranged in the vehicle body, and further, the signal lines of the vehicle body and the vehicle structure are connected by a pair of non-contact communication means provided in the vehicle body and the vehicle structure, An output signal from the operating means is transmitted and received between the vehicle body and the vehicle component through a pair of non-contact communication means, whereby the output signal is provided to both the switch means and the inverter stopping means. It has features.

[0006]

Advantageous Effects of the Invention <Invention of Claim 1> Since the inverter is stopped when all the loads are stopped, unnecessary power consumption can be suppressed.

<Invention of Claim 2> An output signal from the operating means is transmitted and received between the vehicle body and the vehicle structure through a pair of non-contact communication means, and the output signal is transmitted between the switch means and the inverter stop. Given to both the means and the means. Thus, the inverter is stopped when all the loads are stopped, and the inverter is driven when at least one load is driven.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an automobile provided with a laterally opening vehicle door 10 at the rear. On the left side of the rear end surface of the vehicle body 11,
A pair of rotating shafts 13 project upward and downward from the side approaching each other. By engaging these rotating shafts 13 with the upper and lower ends of the vehicle door 10, the vehicle door 1 is turned on.
0 is rotatably connected to the vehicle body 11.

The vehicle door 10 is provided with a rectangular glass window 15 on the upper side, and a pair of blinkers 3 on the left and right on the lower side.
6 and 36 (see FIGS. 1 and 3; however, FIG. 1 shows only the right blinker 36).
The glass window 15 has a defogger 18 (hereinafter referred to as “DEF”).
18 "), which can be driven to prevent the glass window 15 from fogging. In addition, a wiper 16 is provided below the glass window 15, and this is the vehicle door 1.
It receives power from the wiper motor 17 incorporated in the motor 0 and swings right and left.

The power lines between the vehicle door 10 and the vehicle body 11 are connected by an electromagnetic induction type connector 22. The electromagnetic induction type connector 22 includes a primary side connector 23 fixed to the vehicle body 11 as shown in an enlarged view in FIG.
And a secondary connector 24 fixed to the vehicle door 10. The secondary connector 24 is embedded in an upper part of a recess 20 formed at an edge of the vehicle door 10 on the rotation shaft side, and a joint surface with the primary connector 23 is directed downward. The secondary core 25 provided in the secondary connector 24 is formed, for example, by sintering ferrite powder, has a flat cylindrical shape as a whole, and the axis of the cylinder coincides with the center of rotation of the vehicle door 10. The arrangement is as follows. The lower surface of the secondary core 25 has an annular groove 25A concentric with the flat cylinder.
Is formed, and the secondary coil 26 is accommodated therein.

On the other hand, the primary connector 23 is connected to the vehicle body 1.
1, a projection 21 protruding from the rear end toward the recess 20.
, And the joint surface with the secondary connector 24 faces upward. The primary-side connector 23 has a primary coil 29 housed in a primary core 28 having the same structure as the secondary core 25, and the cores of the core 28 and the coil 29 also coincide with the rotation axis of the vehicle door 10. is there. Then, the vehicle door 10 is assembled to the vehicle body 11,
As shown in FIG. 2, both cores 25 and 28 are joined.

The primary and secondary connectors 23, 24 have
An optical path 40 is formed to penetrate along the central axis of both cores, and both optical communication elements 32A, 30 are provided at both ends of the optical path 40.
B is arranged so that optical communication between the connectors 23 and 24 is possible.

FIG. 3 shows a portion related to the present invention in the electric configuration of the automobile. In the vehicle body 11, an inverter 35 for exciting the primary coil 29 is connected to the battery 34, and a MOS-type FET 50 is provided in the middle of a line connecting the inverter 35 and the battery 34, for example. The gate voltage of the FET 50 is controlled by the control circuit 51,
It functions as a switch for opening and closing the line, and constitutes the inverter stopping means of the present invention. In the driver's seat of the vehicle body 11, operating means 53 including a turn signal operating lever, a wiper operating lever, a DEF switch, a hazard switch, and the like are provided. Based on the operation of the operating means 53, a command circuit 54 is provided. A light emitting circuit 55 for driving the light emitting element 32A provided in the primary connector 23,
A signal is given to the control circuit 51.

On the other hand, in the vehicle door 10, the secondary coil 2
6, a plurality of loads such as a winker 36, a wiper motor 17 and a DEF 18 are connected in parallel via a rectifier circuit 62, and a line connecting each load and the rectifier circuit 62 and a midway are provided.
For example, a MOS-type FET 60 is provided for each. The gate voltages of these FETs 60 are controlled by the control circuit 61 and function as switches for opening and closing the above-mentioned lines, and constitute switch means of the present invention. Further, the vehicle door 10 is provided with a light receiving circuit 63 connected to the light receiving element 30B provided in the secondary connector 24, and the light receiving circuit 63 is provided with the control circuit 61
Is given a signal. Further, the light receiving circuit 63 and the control circuit 61 are driven by the induced electromotive force of the secondary coil 26.

Next, the operation of the present embodiment having the above configuration will be described. When the ignition key of the automobile is removed, no gate voltage is applied to the FETs 50 and 60 provided in the vehicle body 11 and the vehicle door 10, respectively, and all the lines on which the FETs 50 and 60 are arranged are not applied. Are in a cut-off state.

When the ignition key is turned on, a command circuit 54 and a control circuit 5 provided in the vehicle body 11 are provided.
1 and the light emitting circuit 55 are driven by receiving electric power directly from the battery 34. Then, for example, D
When both the EF 18 and the wiper motor 17 are turned on, the command circuit 54 sends the control circuit 5
1 and the light emitting circuit 55 are supplied with a signal. Then, the control circuit 51 applies a gate pressure to the FET 50 to switch the line between the battery 34 and the inverter 35 to a conductive state, and the inverter 35 is activated. Thus, the primary coil 29 provided on the vehicle body 11 side
Is excited, and the magnetic flux passes through the secondary coil 26 provided on the vehicle door 10 side, and induced electromotive force is generated at both ends of the coil 26. Then, the control circuit 61 and the light receiving circuit 63 on the door side are driven by the induced electromotive force.

On the other hand, the light emitting circuit 55 which receives the signal from the command circuit 54 drives the light emitting element 32A on the vehicle body 11 side. Then, the light signal emitted from the light emitting element 32A is received by the light receiving element 30B on the vehicle door 10 side, and the received signal is taken into the control circuit 61 on the door side via the light receiving circuit 63. The control circuit 61
A gate voltage is applied to both the DEF 18 and the FETs 60 provided on each line between the wiper motor 17 and the rectifier circuit 62. Thereby, the DEF 18 and the wiper motor 17 are driven together.

Next, when only the wiper 16 is turned off by the operating means 53 while the DEF 18 is kept on, the control circuit 51 of the vehicle body 11 keeps driving the inverter 35. On the other hand, the control circuit 61 on the side of the vehicle door 10 receives a command from the command circuit 54 via the optical communication line (the circuit 55, the elements 32A, 30B, and the circuit 63), and determines the gate voltage of the FET 60 related to the wiper motor 17. Stop the application. Thereby, DEF18
Only the wiper motor 17
Stops.

Now, with the car engine running,
When any of the loads on the vehicle door 10 is turned off by the operating means 53, the control circuit 5 on the vehicle body 11 side is set.
1 stops the application of the gate voltage of the FET 50 between the battery 34 and the inverter 35 in response to the command from the command circuit 54. Thereby, the line between the battery 34 and the inverter 35 is cut off, and the inverter 35 stops.

As described above, according to the power supply system of the present embodiment, the inverter 35 is stopped when all the loads on the vehicle door 10 are stopped, so that unnecessary power consumption occurs. Can be suppressed.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention. (1) In the above-described embodiment, the inverter is stopped by interrupting the line between the inverter and the battery. However, for example, the line between the inverter and the battery remains conductive, A configuration may be adopted in which the switch circuit incorporated therein is turned off and the inverter is stopped. (2) In the above-described embodiment, the power line and the signal line are separately provided between the vehicle door and the vehicle main body. However, the electric power and the signal are provided between the vehicle main body and the vehicle door. May be sent in one line.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a rear end of an automobile according to an embodiment of the present invention.

FIG. 2 is a side cross-sectional view of the coupled state of the electromagnetic induction type connector.

FIG. 3 is a block diagram showing an electric configuration of the automobile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Vehicle door (vehicle constituent body) 11 ... Vehicle main body 17 ... Wiper motor (load) 18 ... DEF (load) 26 ... Secondary coil 29 ... Primary coil 30B ... Light receiving element (communication means) 32A ... Light emitting element ( Communication means) 34 Battery (power supply unit) 35 Inverter 36 Turn signal (load) 51 Control circuit (Inverter stopping means) 53 Operating means 55 Light emitting circuit (communication means) 63 Light receiving circuit (communication means) 50 FET (inverter stopping means) 60 ... FET (switching means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02J 17/00 H02J 17/00 B (72) Inventor Tomio Iwamoto 1-7 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture No. 10 F-term in Harness Research Institute, Inc. (reference) 3D025 AA01 AB01 AC01 AC09 AD03 AE57 AG50 5H007 AA05 CA02 CB04 CB07 CC32 DB01 DC05 FA13 FA19 HA01 HA03

Claims (2)

[Claims] An electric power is supplied from a primary side to a secondary side by providing both primary and secondary coils in the middle of a power line of a vehicle and exciting the primary coil by an inverter connected to a power supply device provided in the vehicle. And a plurality of loads are respectively connected in parallel to the secondary coil via switch means, and the plurality of loads are selectively switched between a driving state and a stopped state by operating an operation means for turning on and off the switching means. The power supply system according to claim 1, further comprising an inverter stopping unit that stops the inverter when all of the loads are in a stopped state. 2. The secondary coil, the plurality of loads, and the switch means are arranged on a vehicle body assembled to the vehicle body, while the primary coil, the power supply device, and the inverter are connected to each other. And a signal line of the vehicle body and the vehicle component are connected by a pair of non-contact communication means provided on the vehicle body and the vehicle component, and the operating means Is output between the vehicle body and the vehicle component through the pair of non-contact communication means, and the output signal is transmitted to both the switch means and the inverter stop means. The power supply system according to claim 1, wherein the power supply system is provided.