JPH0965502A - Induction type power feeding-collecting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an induction type power feeding-collecting equipment which can prevent lowering of power collection and a power collection efficiency in relation to a lateral slippage of a car body. SOLUTION: A secondary coil 5 of a secondary inductor 6 on the car body side opposed to a primary inductor 3 provided along a running lane is made up of a plurality of coils (a)-(f) disposed in the lateral direction to the running lane. Thereby some of the coils (a)-(f) of the secondary coil 5 can be interlinked with a magnetic flux B of the primary inductor 3 at the time of a lateral slippage of a car body, so as to prevent lowering of collected power and a power collection efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inductive power feeding / collecting device for supplying electric power to a vehicle in a non-contact manner, and more particularly to a collecting coil and a control device for the collecting coil.

[0002]

2. Description of the Related Art A primary inductor is arranged along a traveling road, a secondary inductor is provided on a vehicle traveling on the traveling road, and electric power is supplied to the vehicle by a mutual induction action of the primary inductor and the secondary inductor. For example, as shown in FIG.
As shown in Fig. 4, a primary inductor 3 in which a primary coil 2 is attached to a core 1 is embedded in a dedicated lane provided on a road, and a secondary coil is attached to a core 4 at a lower portion of a vehicle body of a small bus running on a tire on the dedicated lane. There is one in which the secondary inductor 6 to which 5 is attached is attached.

In such a running system, the vehicle does not run on a dedicated track such as a rail, even if it is called a dedicated lane, but runs on a road. There is a problem that the secondary inductor coil 5 is laterally displaced from the top of the primary inductor coil 2 and the efficiency of the collected power is lowered.

Therefore, as one method for solving the problem, conventionally, as shown in the cross-sectional view of FIG. 8, for example, the core 1 of the primary inductor 3 is of C type, and the primary coils 2 are attached to both ends of the core 1 respectively. A magnetic flux B as shown in FIG. 8 is formed by applying an exciting current to each of the coils 2, while the core 4 of the secondary coil 5 on the vehicle body side is formed into an I type and the width thereof is the width of the core 1 of the primary inductor. The secondary coil 5 is attached to the center of the core 4 of the secondary inductor 6 so that the I-shaped core 4 of the secondary inductor 6 can collect the magnetic flux even when the vehicle body is laterally displaced. Therefore, there is a device that prevents the efficiency of the collected power from decreasing.

[0005]

However, in the case of using the above wide core, for example, as shown in FIG.
As shown in (b), when the core 4 of the secondary inductor 6 deviates from the primary coil 2 by more than half, the magnetic flux B generated by the primary coil 2 is no longer linked to the secondary coil 5, and the collected power and collection efficiency are improved. There is a problem that causes the decline of.

Therefore, an object of the present invention is to provide an inductive power feeding / collecting device in which the collected power and the collecting efficiency are less likely to decrease with respect to the lateral displacement of the vehicle body.

[0007]

In order to solve the above-mentioned problems, in the first invention, a primary inductor is arranged along a traveling road, and a secondary inductor is provided in a vehicle traveling on the traveling road, Conventional inductive power supply that supplies electric power to the vehicle by mutual induction between the inductor and the secondary inductor
In the current collector, the secondary coil of the vehicle has a plurality of coils arranged laterally with respect to the traveling path.

In the second aspect of the present invention, a configuration is adopted in which a plurality of coils of the secondary inductor are provided with a current collection changeover switch that disconnects the coils according to the number of magnetic flux linkages with the primary inductor. In the third aspect of the invention, a sensor is provided for detecting the lateral displacement of the vehicle, and the sensor output is used to switch the current collection / selection switch so that the current collected by the secondary inductor is maximized. .

[0009]

In the first aspect of the invention configured as described above, the secondary inductor of the vehicle has a plurality of coils arranged laterally with respect to the traveling path, so that the vehicle body is laterally displaced. However, either coil can interlink with the magnetic flux generated by the primary inductor, so if each coil synthesizes the electromotive force generated by the mutual induction with the primary inductor to obtain electric power, It is possible to prevent a decrease in power.

According to the second aspect of the invention, when the vehicle laterally slips, the magnetic flux does not interlink with the current collecting changeover switch,
A back electromotive force is generated by disconnecting the coil that constitutes the secondary coil that does not contribute to current collection, or by interlinking with the reverse magnetic flux generated by the self-induction action of the coil that interlinks with the magnetic flux of the primary inductor. Current can be collected by disconnecting the coil of the secondary coil that hinders current collection.

In the third aspect of the invention, the lateral shift of the vehicle can be detected by the sensor. Therefore, the coil of the secondary coil of the changeover switch can be automatically disconnected according to the detected lateral shift. .

[0012]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings.

At this time, the members described in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 shows an example of an embodiment of an inductive power feeding / collecting device according to the first invention as a first embodiment.

As shown in the sectional view of FIG. 1, in this inductive power supply / collector, the secondary coil 5 of the vehicle has a plurality of coils a.
To f, and the respective coils a to f are wound around the same core 4. This core 4 is a C-shaped core 4
Are connected to each other and have a width at least equal to or larger than the core 1 of the primary inductor 3. The coils a to f are wound around the respective C-shaped “I” -shaped rod-shaped portions, and the directions of the currents flowing through the coils a to f are opposite in the upper side and the lower side of the core 4. Becomes The core 4 to which the coils a to f are attached in this manner has the C-shaped bent side of the primary inductor 3 at the bottom of the vehicle body.
It is mounted at a right angle to the traveling path, which is installed opposite to the traveling path. Therefore, each coil a of the core 4
f is arranged laterally with respect to the traveling path.

This embodiment is configured as described above, and as shown in FIG. 1, when the vehicle body during traveling does not cause lateral displacement, the magnetic flux B generated by the primary inductor 3 is generated by the secondary inductor 6. It is focused by the core 4 and passes through both ends of the core 4 to interlink with all the coils a to f.

Now, when the running vehicle body is laterally displaced and about half of the vehicle body is displaced, the structure is made such that the core 4 of the secondary inductor 6 is connected to the C-shaped core 4. The closest C-shaped bent portion facing the pole of the primary inductor 3 focuses the magnetic flux generated by the primary inductor coil 2 as shown in FIG. At this time, the magnetic flux passing through the inside of the core 4 interlinks with the secondary coils 5 a, b, and c, so that current can be collected by combining the outputs of the coils a, b, and c.

Further, even when the vehicle body is displaced by more than half, as shown in FIG. 3, since the magnetic flux focused by the core 4 can be linked with the coil a, current can be collected.
It is possible to reduce a decrease in collected power and efficiency with respect to lateral displacement of the vehicle body.

FIG. 4 shows an example of an embodiment of an inductive power feeding / collecting device according to the second invention as a second embodiment.

In this embodiment, the coils a to f constituting the secondary coil 5 of the inductive power feeding / collecting device of the first embodiment are arranged.
Output of each coil is connected in series, and each coil a connected in series
It is possible to output the connection output of the two to f as a current collection output of the secondary inductor 6 via a current collection changeover switch (hereinafter referred to as a selector switch) 7, without interlinking with the magnetic flux B of the primary inductor 3. Coils a to f that do not contribute to current collection
The coils a to f that hinder the current collection can be separated by the mutual induction action of the coils a to f.

That is, in this embodiment, when the vehicle body is laterally displaced, the coils a to f of the secondary coil 5 are connected in series as shown in FIG. Since the coils c to f that do not intervene are present as a load, the selector switch 7 is operated to disconnect the coils c to f that do not interlink with the magnetic flux and prevent a decrease in current collection efficiency. At this time, as shown in FIG.
By attaching the coils a to f of the secondary inductance 6 to the same core, the magnetic flux B ′ in the opposite direction and the magnetic flux of the primary inductor 3 generated by the self-induction action of the coils a and b interlinking with the magnetic flux of the primary inductor 3. Coil c that does not interlink with
The coils c to f generate a counter electromotive force due to the mutual induction action with .about.f, which causes a reduction in the collected electric power. In this case as well, the coils c to f causing the counter electromotive force are separated by the selector switch 7. As a result, it is possible to prevent a decrease in current collection efficiency.

Regarding other constitutions and operations,
The description is omitted because it is the same as the embodiment.

FIG. 6 shows an embodiment of an inductive power supply / current collector according to the third invention as a third embodiment.

In this embodiment, a sensor 8 for detecting the lateral displacement of the vehicle body of the inductive power feeding / collecting device of the second embodiment is provided so that the selector switch 7 can be automatically switched. is there.

That is, as shown in FIG. 6, for example, magnetic sensors are provided in the lower portion of the vehicle body (core 4 in the embodiment) as sensors 8 corresponding to the coils a to f of the secondary inductor 6, respectively. By detecting the magnetic flux B of the primary inductor 3, the lateral deviation from the primary inductor 3 is detected, and the detection output is input to the arithmetic processing unit 9 so that the coils a to f capable of effectively interlinking with the magnetic flux.
Is determined and the selector switch 7 is switched based on the calculation processing result. The calculation processing device 9 automatically switches the selector switch 7 to improve the response to lateral deviation. It is a thing.

At this time, the sensor 8 is not limited to the magnetic sensor. For example, an optical sensor or a video camera is attached to the lower part of the vehicle body, and the sensor 8 displaces the primary inductor 3 laid on the traveling path. The selector switch 7 may be switched by optically recognizing it.

The rest of the structure and its operation are the same as those of the first and second embodiments, and therefore their explanations are omitted.

In the above embodiment, the case where the inductive power supply / current collector of the present invention is applied to a vehicle traveling on a road has been described, but the present invention is not limited to this and is used in a factory or the like. It can also be applied to a carrier vehicle.

[0029]

According to the first aspect of the invention configured as described above, the secondary inductor of the vehicle has a plurality of coils arranged in the lateral direction with respect to the traveling path, so that current collection against lateral deviation can be achieved. It is possible to enable inductive power feeding with little reduction in power and current collection efficiency.

According to the second aspect of the present invention, since the current collecting changeover switch is provided for disconnecting the plurality of secondary coils in accordance with the number of magnetic flux linkages with the primary coil, the magnetic flux does not interlink, thereby contributing to current collection. It is possible to separate a coil that does not exist or a magnetic flux in the opposite direction that interferes with the current collection from the current collection output to enable current collection with less loss and prevent a decrease in current collection power and efficiency.

In the third invention, a sensor for detecting the lateral displacement of the vehicle is provided, and the current collecting changeover switch is automatically switched so that the power collected by the secondary coil is maximized by the sensor output. Therefore, it is possible to speed up the switching response of the current collection changeover switch with respect to the lateral deviation and prevent the reduction of the current collection power and the current collection efficiency.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a first embodiment.

FIG. 2 is an explanatory diagram showing the induction action of the first embodiment.

FIG. 3 is an explanatory diagram showing the induction action of the first embodiment.

FIG. 4 is a block diagram of a second embodiment.

FIG. 5 is an operation diagram for explaining the operation of the second embodiment.

FIG. 6 is a block diagram of a third embodiment.

FIG. 7 is a schematic diagram showing a conventional example.

FIG. 8 is an operation diagram illustrating a conventional example.

FIG. 9 is a sectional view of a conventional example.

[Explanation of symbols]

 1 Core (Primary Inductor) 2 Primary Coil 3 Primary Inductor 4 Core (Secondary Inductor) 5 Secondary Coil 6 Secondary Inductor 7 Selector Switch 8 Magnetic Sensor 9 Arithmetic Processing Device af Coils B and B forming a secondary coil ′ Magnetic flux

Claims (3)

[Claims] 1. An induction device for arranging a primary inductor along a traveling path, providing a secondary inductor on a vehicle traveling on the traveling path, and supplying electric power to the vehicle by a mutual induction action of the primary inductor and the secondary inductor. An inductive power feeding / collecting device, characterized in that the secondary inductor of the vehicle has a plurality of coils arranged laterally with respect to a traveling path. 2. The inductive power feeding / collecting device according to claim 1, further comprising a current collecting changeover switch for disconnecting the plurality of coils of the secondary inductor according to the number of magnetic flux linkages with the primary inductor. apparatus. 3. A sensor for detecting lateral displacement of the vehicle is provided, and the current collection / switching switch is switched so that the power collected by the secondary inductor is maximized by the sensor output. Inductive power supply and current collector described in 2.