JPH11220813A - Power supply device for charging electric vehicle and relay connector for charging electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device for charging an electric vehicle that can cope with a plurality of vehicle side connectors with different specifications, and a relay connector for charging the electric vehicle that can cope with a plurality of vehicle side connectors with different specifications, simply by placing the connector at a congenital power supply for charging the electric vehicle. SOLUTION: The tip of an output cable 12 being extended from a power supply device 10 is provided with power supply side connectors 20A, 20B, and 20C with different specifications. For example, for charging an electric car 40B with a B-type vehicle side connector 30B, the power supply side connector 20B corresponding to the specifications is selected and is placed at the vehicle side connector 30B. Then, when a main power supply circuit is driven, a primary coil being provided at the power supply side connector 20B and a secondary coil being provided at the vehicle side connector 30B are electromagnetically coupled, and power from a main power supply circuit is supplied to the electric vehicle 40B by a charging device due to an electromagnetic induction operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle charging power supply device and an electric vehicle charging relay connector.

[0002]

2. Description of the Related Art As an example of a power supply for charging an electric vehicle,
The one disclosed in U.S. Pat. No. 5,412,304 is known. The charging power source 1 is shown in FIG.
It has. On the other hand, an electric vehicle 4 having a specification corresponding to the charging power supply 1 is equipped with a vehicle-side connector 5 into which the power-side connector 3 can be inserted. When the power supply side connector 3 is inserted into the vehicle side connector 5, both connectors 3, 5
The primary and secondary coils (not shown) provided for the vehicle are electromagnetically coupled, and power is supplied from the charging power supply 1 to the power storage device (not shown) of the electric vehicle 4 using electromagnetic induction.

[0003]

With the spread of electric vehicles, it is assumed that electric vehicles having vehicle-side connectors of various specifications coexist in the same area. However, in the charging power supply 1 having the above-described configuration, since a vehicle-side connector that can be coupled to the power-side connector 3 is limited, there is a problem that an electric vehicle having a vehicle-side connector with a different specification cannot be charged. Further, in order to cope with the above-mentioned problem, in the case of a structure in which an existing charging power source cannot be used, the cost of equipment change is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and requires only an electric vehicle charging power supply device capable of supporting a plurality of vehicle-side connectors having different specifications and an existing electric vehicle charging power supply. It is an object of the present invention to provide an electric vehicle charging relay connector capable of supporting a plurality of vehicle-side connectors having different specifications.

[0005]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 comprises a primary coil magnetically coupleable with a secondary coil connected to a power storage device of an electric vehicle, and comprises a primary power supply circuit. In a power supply device for charging an electric vehicle that supplies the electric power to the power storage device by electromagnetic induction, a plurality of power supply side connectors having different specifications are provided in correspondence with a plurality of specifications of the vehicle side connector provided with the secondary coil, A primary coil is disposed in each of the power supply side connectors, and a plurality of output cables electrically connected to each primary coil are connected to a main power supply circuit.

According to a second aspect of the present invention, a secondary coil connected to a power storage device of an electric vehicle is magnetically coupled to a primary coil connected to a power supply device for charging an electric vehicle to charge the power storage device by electromagnetic induction. A power supply connector with a primary coil is formed so that it can be attached to a vehicle-side connector of a specified specification equipped with a secondary coil, so that even an electric vehicle with a vehicle-side connector of another specification different from the specified specification can be externally charged. To be rechargeable with a power source, which is relayed between the power connector and a vehicle connector of another specification, is formed to be attachable to the power connector, and is a primary coil of the power connector. A power supply coupler having a power supply side relay coil that can be magnetically coupled to the vehicle and a power supply formed to be attachable to a vehicle side connector of another specification, and magnetically coupleable with a secondary coil of a vehicle side connector of another specification. Characterized by a location that provided at both ends of the vehicle-side coupler having a car-side relay coil connected to the relay coil.

According to a third aspect of the present invention, in the relay connector according to the second aspect, the power supply-side coupler and the vehicle-side coupler are provided separately, and the two are connected by a relay cable.

[0008]

According to the first aspect of the present invention, in order to charge an electric vehicle, the vehicle must be stopped near the power supply device for charging the electric vehicle, and then the specification of the vehicle-side connector provided in the electric vehicle is required. Select the power supply side connector corresponding to the above from a plurality of connectors and attach it to the vehicle side connector. When the main power supply circuit is driven, a high-frequency current flows through the output cable, and the primary coil provided on the power supply side connector and the secondary coil provided on the vehicle side connector are electromagnetically coupled. Is supplied to the electric storage device of the electric vehicle. As described above, according to the electric vehicle charging power supply device of the present invention, it is possible to cope with a plurality of types of vehicle-side connectors, and it is possible to widen the types of vehicles to be charged.

According to the second aspect of the present invention, when the specification of the power supply side connector provided in the power supply device for charging an electric vehicle does not match the specification of the vehicle side connector of the electric vehicle stopped nearby for charging. Attaching the power supply side connector to the power supply side coupler provided at one end of the relay connector of the present invention,
The vehicle-side coupler provided at the other end of the relay connector is attached to the vehicle-side connector. Then, when the power supply device for charging the electric vehicle is turned on, the primary coil of the power supply connector and the power supply relay coil of the relay connector are electromagnetically coupled, and the power supply relay coil and the vehicle side electrically connected thereto are connected by electromagnetic induction. High-frequency current flows through the relay coil. As a result, the vehicle-side relay coil and the secondary coil provided in the vehicle-side connector are electromagnetically coupled, and a dielectric electromotive force is generated in the secondary coil by an electromagnetic induction action to charge the power storage device. Therefore, according to the relay connector of the present application, it is possible to use an existing electric vehicle charging power supply device to expand the types of vehicles to be charged without increasing costs.

According to the third aspect of the present invention, since the power supply-side coupler and the vehicle-side coupler are separate bodies, the movement of each coupler is facilitated, and the degree of freedom in charging operation is increased.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS. The electric vehicle charging power supply device 10 (hereinafter, referred to as “power supply device 10”) of the present embodiment supplies electric power to the electric vehicle side by an electromagnetic induction method, and thereby, a power battery 42 provided in the electric vehicle (FIG. 8). (Equivalent to the "power storage device" of the present application), and is installed in a parking lot or the like shared by an unspecified number of people, for example.

As shown in FIG. 1, three output cables 12 extend from a box-shaped case 14 provided in the power supply device 10, and a power supply side connector 20A having different specifications is provided at the end of each output cable 12. , 20B and 20C are provided. The details of the A-type power supply side connector 20A shown on the upper side in FIG. 1 are shown in FIGS. 2 and 3, and a thin case 21A having a grip portion 22A at one end.
Accommodates a cylindrical primary core 23A made of ferrite. A primary coil 24A is arranged around the core 23A, and both ends of an electric wire constituting the primary coil 24A are provided on a pair of core wires 13, 1 provided in the output cable 12.
3 (see FIG. 8).

The power supply side connector 20A can be connected to A
The vehicle-side connector 30A of the type shown in FIGS. 2 and 3 includes a deep groove-shaped recess 31A into which the power-supply-side connector 20A can be inserted, and a pair of ferrite made on both sides of the recess 31A. Secondary cores 33A, 33A are provided. An annular recessed portion 32 is provided on the facing surface of both secondary cores 33A.
A is formed, and the secondary coil 34A is housed therein. The secondary coil 34A is connected to a charging circuit 41 as shown in FIG.
It is connected to the. Then, the power supply side connector 20A
When this is mounted on the vehicle-side connector 30A, as shown in FIG. 3, the primary coil 24A is positioned coaxially with the secondary coil 34A, and is opposed to each other to be in a state capable of magnetic coupling.

The details of the B-type connector 20B shown in the center in FIG. 1 are shown in FIGS. 4 and 5, and a primary core 23B having an L-shape viewed from the side is covered with a case 21B. It is configured. The case 21B
The rear end is provided with a grip portion 22B. Further, a primary coil 24B formed by winding a litz wire a plurality of times, for example, in a single layer around the circumferential surface of a lateral portion 25B of the primary core 23B extending in the mounting direction A (left-right direction in the figure) to the other side.
Is wound, and both ends of the litz wire are electrically connected to the core wires 13 and 13 of the output cable 12 (see FIG. 8). The vertical portion 26B of the primary core 23B that is orthogonal to the mounting direction A is a flat plate that can abut the horizontal portion 35B of the secondary core 33B as described below.

The power supply side connector 20B can be connected to B
As shown in FIG. 4, the vehicle-side connector 30B of the type
A secondary core 33B similar to the primary core 23B is arranged inside the concave portion 31B into which the connector 20B can be inserted so as to be point-symmetric with the primary core 23B.
A secondary coil 34B similar to the primary coil 24B is wound around the horizontal portion 35B of the secondary core 33B, and the secondary coil 34B is connected to the A-type vehicle-side connector 3 described above.
Like 0A, it is connected to the power battery 42 via a charging circuit. When the power supply side connector 20B is mounted on the vehicle side connector 30B, as shown in FIG. 5, the front end surfaces of the horizontal portions 25B and 35B of the cores 23B and 33B are aligned with the vertical portions 36B and 26B, a closed loop magnetic circuit is formed, and the primary and secondary coils 24A and 34A can be electromagnetically coupled.

The details of the C-type connector 20C shown on the lower side in FIG. 1 are shown in FIGS. 6 and 7, and the flat disk-shaped primary core 23C is arranged so that its plane portion faces the mating side. In the case 21C. The rear end of the case 21C has a grip 22C.
Is provided. An annular recessed portion 28C is formed in a plane portion of the primary core 23C, and the primary coil 24C accommodated in the recessed portion 28C is connected to the core wires 13, 1 of the output cable 12.
3 (see FIG. 8).

The power supply side connector 20C can be connected to C
As shown in FIG. 6, the vehicle-side connector 30C of the type
A secondary core 33C similar to the primary core 23C is accommodated in the inner surface of the concave portion 31C into which the power supply-side connector 20C can be inserted. Similarly, it is connected to a power battery via a charging circuit. When the power supply side connector 20C is attached to the vehicle side connector 30C, as shown in FIG. 7, the two cores 23C and 33C are joined to form a closed-loop magnetic circuit, and both the primary and secondary coils are formed. 24A and 34A can be electromagnetically coupled.

A main power supply circuit 15 (see FIG. 8) is housed inside the box-shaped case 14 of the power supply device 10. Further, three pairs of core wires 13 provided in three output cables 12 are connected in parallel to a pair of output terminals 16A, 16A of the high frequency power supply 16 provided in the main power supply circuit 15. As shown in FIG. 1, three receiving portions 17 are formed on the upper wall of the box-shaped case 14 so that the power supply connectors 20A, 20B, and 20C can be accommodated therein.

The operation of this embodiment is as follows. In the power supply device 10 of the present embodiment, when not in use, the power supply connectors 20A, 20B, and 20C are connected to the receiving portion 1 of the box-shaped case 14.
7 are arranged.

As shown in FIG. 9, when an electric vehicle 40A having an A-type vehicle-side connector 30A for charging is stopped near the power supply device 10, three power-side connectors 20A, 20B, 20C, an A-type power supply side connector 20A is selected, the gripping portion 22A is gripped and brought to a stopped vehicle.
0A is inserted into the recess 31A. Then, as shown in FIG. 3, the primary and secondary coils 4 and 11 provided in the connectors 20A and 30A are coaxially opposed to each other, and are in a state capable of magnetic coupling. When the main power supply circuit 15 is driven by turning on a switch (not shown) of the power supply device 10,
Primary coil 1 from high frequency power supply 16 via cable 12
1, a high-frequency current flows, and an induced electromotive force is generated in the secondary coil 34A by the electromagnetic induction action. Then, the induced electromotive force is rectified by the charging circuit 41 (see FIG. 8),
The power battery 42 is charged.

As shown in FIG. 10, an electric vehicle 40 having a B-type vehicle-side connector 30B for charging.
When the vehicle B is stopped near the power supply device 10, the three power-side connectors 20 A, 20 B, and 20 C
The power supply side connector 20B of the type is selected, it is mounted on the vehicle side connector 30B, and a switch (not shown) of the power supply device 10 is turned on. Then, as in the case of the A type, electric power is supplied to the power battery 42 by the electromagnetic induction action of both the primary and secondary coils 24B and 34B and charged.

Further, in the case of an electric vehicle provided with a C-type vehicle-side connector 30C, the C-type connector 20C
Is selected and the vehicle-side connector 30C is mounted, and in the same manner, the power battery 42 of the electric vehicle can be charged.

As described above, according to the power supply device 10 of the present embodiment, a plurality of types of vehicle-side connectors 30A, 30B, 30C are provided.
, And the range of vehicles to be charged can be expanded. Further, according to the power supply device 10 of the present embodiment, compared to a case where a plurality of power supply devices having different specifications are arranged, the facility efficiency is improved and the space is saved.

<Second Embodiment> A second embodiment is shown in FIG.
13 to FIG. 13, in which the present invention is applied to a relay connector 50 attachable to a power supply device. Hereinafter, portions having the same structure as in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted. Only different configurations will be described. One output cable 12 extends from the box-shaped case 14 of the power supply device 80, and the first
The power supply side connector 20A of the A type described in the embodiment is provided. Therefore, with this electric wire device 80 alone,
Electric vehicle 40 having A-type vehicle-side connector 30A
Only A can be charged.

Now, as shown in FIG. 11, two types of relay connectors 50B and 50C can be attached to the power supply device 10.

The relay connector 50B shown on the left side of FIG.
Has a configuration in which a vehicle-side coupler 51B and a power-supply-side coupler 53 are provided at both ends of a relay cable 52 having the same configuration as the output cable 12 of the first embodiment. Car side coupler 51
B has the same configuration as the B-type power supply side connector 20B described in the first embodiment, and has a vehicle-side relay coil 55B having the same configuration as the primary coil 24B of the first embodiment.
And is electrically connected to a core wire (not shown) provided in the relay cable 52. On the other hand, the power supply side coupler 53
12 is shown in detail in FIG. 12, and has a recess 57 into which the power-supply-side connector 20A can be inserted in the protective case 54,
On both sides of the recess 57, a pair of cores 58 and a pair of power supply side relay coils 56 having the same configuration as the core 33B and the coil 34B of the first embodiment are provided. The power supply side relay coil 56 is connected to the core wire of the relay cable 52, so that the power supply side relay coil 56 and the vehicle side relay coil 55B are electrically connected.

The other relay connector 50C includes a vehicle-side coupler 51C having the same configuration as the C-type connector 20C of the first embodiment, instead of the vehicle-side coupler 51B.
Other configurations are the same as those of the other relay connector 50B.

The operation of this embodiment is as follows. When the electric vehicle 40A having the A-type vehicle-side connector 30A for charging is stopped near the power supply device 80, the power supply-side connector 20A provided in the power supply device 80
Is attached to the vehicle-side connector 30A, and the power supply 10 is energized, the power battery 42 of the electric vehicle 40A is turned on.
Is charged.

As shown in FIG. 13, an electric vehicle 40 having a B-type vehicle-side connector 30B for charging.
When B stops near the power supply 80, FIG.
Is taken out, and the power supply side connector 20A is inserted into the concave portion 57 (see FIG. 12) of the power supply side coupler 53. Then, as shown in FIG. 14, the primary coil 24A provided in the power supply side connector 20A and the power supply side relay coil 56 provided in the power supply side coupler 53 are located coaxially and opposed to each other so that magnetic coupling is possible. Become.

Next, the relay cable 52 is routed, and the vehicle-side coupler 51B at the end thereof is inserted into the recess 31B of the vehicle-side connector 30B. Then, as shown in FIG. 14, the vehicle-side relay coil 55B provided in the vehicle-side coupler 51B and the secondary coil 34B provided in the vehicle-side connector 30B are in a state where they can be electromagnetically coupled.

When the power supply device 80 is turned on, the primary coil 24A of the power supply connector 20A and the power supply relay coil 56 of the relay connector 50B are electromagnetically coupled.
A high-frequency current flows through the power supply side relay coil 56 and the vehicle side relay coil 55B electrically connected to the power supply side relay coil 56 by the electromagnetic induction effect. Thereby, the vehicle-side relay coil 55B and the secondary coil 34B provided in the vehicle-side connector 30B are electromagnetically coupled,
A dielectric electromotive force is generated in the secondary coil 34B by the electromagnetic induction action, and the power battery 42 is charged.

When the electric vehicle equipped with the C-type vehicle-side connector 30C for charging is stopped near the power supply 80, the other relay connector 50C is taken out, and the same operation is performed. I just need.

As described above, the relay connector 5 of the present embodiment
According to 0B and 50C, it is possible to use the existing power supply device 80 to broaden the types of vehicles to be charged at no cost. In addition, since the vehicle-side couplers 51B and 51C and the power-supply-side coupler 53 are separate members, the respective couplers can be easily moved, and the degree of freedom in charging work increases.

<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) The power supply device 1 of the first embodiment described above
0 may be newly manufactured and installed in a parking lot, or may be manufactured by modifying an existing power supply device (for example, the power supply device 80 described in the second embodiment) by wiring processing. Good.

(2) Further, the electric configuration of the power supply device 10 of the first embodiment (see FIG. 8) is such that when the power supply is turned on, the primary coils of all the power supply side connectors 20 are excited. For example, as shown in FIG. 15, at one output terminal 16 </ b> A of the high-frequency power supply 16, one of the pair of core wires 13, 13 of each output cable is connected to the switching unit 45.
And the switching operation may excite only the primary coil of the power supply side connector 2 used for charging.

(3) The two relay connectors 50B and 50C in the second embodiment are connected to the vehicle-side couplers 51B and 51B.
The specifications of C differed from each other, and the specifications of the power supply side couplers 53 and 53 were the same. For example, as shown in FIG.
Power supply side coupler 63 of two relay connectors 60A, 60C
A, 63C are different from each other.
61 may be the same. If you do this,
A vehicle-side connector that can be coupled to the vehicle-side coupler 61 (FIG. 16)
If the electric vehicle equipped with the B-type vehicle-side connector 30B) is provided, the electric vehicle can be charged anywhere, regardless of the specifications of the existing power supply device 10.

(4) Relay connector 5 of the second embodiment
0B and 50C separate the vehicle-side couplers 51B and 51C from the power-supply-side couplers 53 and 53 and connect them with the relay cable 52. For example, the relay connectors 70 and 51 shown in FIG. As described above, the vehicle-side coupler 71 and the power-supply-side coupler 72 may be integrally provided. With such a configuration, it is possible to reduce the size and weight as a whole.

(5) As shown in FIG. 18, of the two relay connectors 50B and 50C of the second embodiment, two relay cables 52 are connected to the power supply side coupler 53, and the end of each cable 52 is connected. A vehicle-side coupler 51B and a vehicle-side coupler 51C according to the second embodiment are provided, and a power supply-side relay coil 56 and vehicle-side couplers 51B and 51B are included in the electrical configuration.
The two vehicle-side relay coils 55B and 55C provided in C may be connected in parallel.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a power supply device according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing an A type power supply connector and a vehicle connector.

FIG. 3 is a side sectional view showing a connection state of the two connectors.

FIG. 4 is a side sectional view showing a B-type power supply side connector and a vehicle side connector.

FIG. 5 is a side sectional view showing a connection state of the two connectors.

FIG. 6 is a side sectional view showing a C-type power supply side connector and a vehicle side connector.

FIG. 7 is a sectional side view showing a connection state of the two connectors.

FIG. 8 is a circuit diagram of a power supply device and an electric vehicle.

FIG. 9 is a perspective view showing a state of charging an electric vehicle having an A-type vehicle-side connector.

FIG. 10 is a perspective view showing a state in which an electric vehicle having a B-type vehicle-side connector is charged.

FIG. 11 is a perspective view showing a power supply device and a relay connector according to a second embodiment;

FIG. 12 is a partial cross-sectional view of the relay connector.

FIG. 13 is a perspective view showing a state in which an electric vehicle provided with a B-type vehicle-side connector is charged.

FIG. 14 is a sectional view when the relay connector is used.

FIG. 15 is a circuit diagram showing a modification of the first embodiment.

FIG. 16 is a perspective view of a relay connector according to a first modification of the second embodiment.

FIG. 17 is a side sectional view of a relay connector showing the same modified example 2;

FIG. 18 is a perspective view of a relay connector showing the same modified example 3;

19A is a perspective view showing a conventional power supply device, and FIG. 19B is a plan view of the power supply side connector.

[Description of Signs] 10, 80: Power supply device for charging electric vehicle 11: Primary coil 12: Output cable 15: Main power supply circuit 20A, 20B, 20C: Power supply side connector 24A, 24B, 24C: Primary coil 30A, 30B, 30C ... Car-side connectors 34A, 34B, 34C ... Secondary coils 40A, 40B ... Electric vehicles 42 ... Power batteries 50B, 50C, 60A, 60C ... Relay connectors 51B, 51C, 61, 71 ... Car-side couplers 52 ... Relay cables 53 , 63A, 63C, 72 ... power supply side coupler 55B, 55C ... car side relay coil 56 ... power supply side relay coil

Continuation of the front page (72) Kunihiko Watanabe 1-7-10 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture Inside Harness Research Institute, Inc. No. Harness Research Institute, Inc.

Claims (3)

[Claims] An electric vehicle charging power supply device comprising a primary coil magnetically coupleable with a secondary coil connected to a power storage device of an electric vehicle, and supplying power from a main power supply circuit to the power storage device by electromagnetic induction. In response to a plurality of specifications of the vehicle-side connector provided with the secondary coil, a plurality of power supply-side connectors having different specifications are provided, and the primary coils are arranged in each of the power-supply-side connectors. A plurality of output cables electrically connected to the main power supply circuit are connected to the main power supply circuit. 2. A primary coil connected to a secondary coil connected to a power storage device of an electric vehicle and a primary coil connected to a power supply device for charging an electric vehicle is magnetically coupled to charge the power storage device by electromagnetic induction. The power supply side connector is formed so as to be attachable to a vehicle-side connector of a predetermined specification provided with the secondary coil, and an electric vehicle having a vehicle-side connector of another specification different from the predetermined specification is also used for the external charging. In order to be rechargeable with a power supply, the power supply side connector is relayed between the power supply side connector and the other specification vehicle side connector, and is formed so as to be attachable to the power supply side connector, and the power supply side connector A power supply side coupler having a power supply side relay coil magnetically coupleable to the primary coil; and a magnetic coupling with a secondary coil of the other side specification vehicle side connector formed to be attachable to the other specification vehicle side connector. And a vehicle-side coupler provided with a vehicle-side relay coil connected to the power supply-side relay coil at both ends thereof. 3. The electric vehicle charging relay connector according to claim 2, wherein the power supply side coupler and the vehicle side coupler are provided separately, and the two are connected by a relay cable.