JP2003047163A - Charging method converting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging method converting device, which allows charging a conductive-charge type electric motorcar, with an inductive charger. SOLUTION: The charging method converting device is for charging a battery 12 of the conductive-charge type electric motorcar 10 with the inductive charger 20; and a negative side can be connected to the electric motorcar 10 and the other side can be connected to the inductive charger 20. The converting device has a signal conversion unit 34, which converts a control signal between the electric motorcar 10 and the inductive charger 20, and a rectifier supply unit 36 which supplies the electric motorcar 10 with a power supply from the inductive charger 20 upon rectifying it; and has a rectangular-wave oscillation circuit 54 which generates a detection signal, by detecting connection with the electric motorcar 10 and a chargeable state of the battery 12, and a battery 52 to start them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging system conversion device for charging a storage battery of a conduction charging type (conductive charging type) electric vehicle (EV) with an induction charging type external charging device (inductive charger). .

[0002]

2. Description of the Related Art There are two types of methods for charging a battery of an electric vehicle, an on-board charging method and an off-board charging method. In the on-board charging method, a charger is installed inside the electric vehicle and charging is performed using this charger. In the off-board charging method, the battery is charged using an external charging stand without providing a charger inside the electric vehicle. The on-board charge method is preferably used because the capacity of the charger mounted in the electric vehicle is limited and the charging time is prolonged. The off-board charge method includes an inductive charge (inductive charge) method and a conductive charge (conductive charge) method. In the inductive charging method, the induction charging electric vehicle and the induction charging external charging device (charging stand) are charged via a transformer in an electrically non-contact state. In the conductive charge system, a connection charging type electric vehicle and a connection charging type external charging device (charging stand) are connected by a connection terminal, and charging is performed in a contact state. Therefore, an induction charging type (inductive charge type) electric vehicle is charged by an inductive charging type charging station (inductive charger), and a conduction charging type (conductive charging type) electric vehicle is charged by a conductive charging type charging station (inductive charge type). Charge with a conductive charger.

[0003]

As described above, since the charging mechanism is completely different between the inductive charge system and the conductive charge system, the inductive charger and the conductive charger cannot be used mutually. That is, a conductive charge type electric vehicle cannot be charged by the inductive charger. Therefore, if an inductive charger and a conductive charger are separately provided in the charging stand, the burden on facilities and cost is large. Therefore, the present invention provides a charging system conversion device capable of charging a conduction charging type (conductive charging type) electric vehicle with an induction charging type external charging device (inductive charger).

[0004]

In order to solve the above-mentioned problems, the invention described in claim 1 connects an external charging device and a storage battery for driving a running motor of an electric vehicle via electromagnetic induction. Then, the induction charging type external charging device (for example, the inductive charger 20 in the embodiment) that charges the storage battery, the charging device provided outside, and the storage battery for driving the running motor of the electric vehicle are connected in a conductive state. It is provided between a conduction charging type electric vehicle (for example, the conductive charging type electric vehicle 10 in the embodiment) in which the storage battery is charged, and a charger connecting means (for example, in the embodiment) of the conduction charging type electric vehicle. Connector insertion portion 14) and the electric vehicle connecting means of the induction charging type external charging device (for example, the charging plug according to the embodiment). 24) a charging system conversion device (for example, the charging system conversion device 30 in the embodiment) connectable to the connection state of the conduction charging type electric vehicle to the charger connecting means and the conduction charging type electricity. Charge control means (for example, the control unit 16 in the embodiment) that detects the state of the storage battery of the automobile and generates a charge control signal is provided inside the conduction charge type electric vehicle, and Charge control signal conversion means (for example, the signal conversion unit 34 in the embodiment) that converts a charge control signal transmitted and received to and from the induction charging type external charging device, and power is supplied from the induction charging type external charging device. Power conversion means for converting electromagnetic energy generated in the electric vehicle connection means into DC power (for example,
Connection detection means (for example, the switch circuit 50 in the embodiment) that includes the coils 28 and 44 and the rectifying unit 46) according to the embodiment, and detects the connection with the charge control means, and the connection detection of the connection detection means. A connection confirmation signal generating means (for example, the rectangular wave oscillating circuit 54 in the embodiment) that generates a connection confirmation signal to the charging control means according to a signal and transmits the connection confirmation signal to the charging control means, and the connection detection means and the connection confirmation. A starting power source (for example, the battery 52 in the embodiment) for starting the signal generating means is provided.

According to this structure, the charging system conversion device can connect the induction charging type external charging device of different standards and the conduction charging type electric vehicle. And
The charging control signal converting means can convert and transmit a charging control signal between the electric vehicle and the induction charging type external charging device. Further, based on the charge control signal, electromagnetic energy supplied from the induction charging type external charging device and generated in the electric vehicle connecting means may be converted into DC power by the power converting means and transmitted to the electric vehicle. it can. Therefore, the conduction charging type electric vehicle can be charged by the induction charging type external charging device having different standards. In this case, when the connection detection means detects that the charging method conversion device is connected to the electric vehicle,
A connection detection signal is generated by the connection detection means. Further, when the chargeable state of the storage battery of the electric vehicle is detected, the connection confirmation signal generating means generates a connection confirmation signal. After these signals are sent to the charging control means,
A charging control signal can be generated from the charging control means so that power is supplied from the induction charging type external charging device. Therefore, after confirming the connection with the electric vehicle and confirming that the preparation for charging the storage battery is completed, electric power can be supplied from the charging control means, so that safety during charging can be ensured. In addition, it is possible to effectively use the supplied power without wasting it.

According to a second aspect of the invention, based on the connection confirmation signal transmitted from the connection confirmation signal generating means to the charging control means, the conduction charging is performed in the charger connecting means of the conduction charging type electric vehicle. That the storage battery of the electric vehicle is connected, and the power supply of the connection detection means and the connection confirmation signal generation means is changed from the starting power supply to the charging system side of the storage battery (for example, the inductive charger 20 in the embodiment). Characterize. With this configuration, when power is supplied from the induction charging type external charging device to the charging method conversion device, the power source of the connection detecting means and the connection confirmation signal generating means is from the starting power source to the charging system side of the storage battery. Be changed. As a result, the power consumption of the startup power supply can be kept to the required minimum and the power of the startup power supply can be retained for a long period of time.

The invention described in claim 3 is characterized in that the starting power source can be charged by the electric power supplied from the charging system side. According to this structure, when the storage battery is charged by the induction charging type external charging device, the starting power source can be charged at the same time, so that the power of the starting power source can be reliably ensured, and the connection detecting means can be obtained. Also, it is possible to reliably supply power to the connection confirmation signal generating means.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A charging system conversion device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an electric vehicle 10 of a conductive charge type and an inductive charger 2 according to an embodiment of the present invention.
0 is an overall explanatory diagram showing the charging method conversion device 30. The charging system conversion device 30 in the present embodiment is used by the inductive charger 20 to charge the battery 12 of the electric vehicle 10 of the conductive charge type. First, the inductive charger 20 will be described. Inductive charger 20
Has a configuration in which a power source 22 is connected to a charging plug 24 corresponding to an inductive charge type electric vehicle. By inserting the charging plug 24 into an inductive charge type electric vehicle, the power source 22 can be placed in an electrically non-contact state. It can be charged.

On the other hand, a conductive charge type electric vehicle 10 (hereinafter, also simply referred to as an electric vehicle 10) is provided with a connector insertion portion 14 corresponding to a connector of a conductive charger. The connector insertion portion 14 is connected to the battery 12 via the wiring 11, and is connected to the control unit 16 by the wiring 13.
Connected via. Control signals and electric power are supplied to the control unit 16 and the battery 12 via these wirings 11 and 13 (details will be described later).

The charging system conversion device 30 according to the present embodiment is provided with the inductive charging connector 32 at one end side and the conductive charging connector 38.
Is provided on the other end side. The inductive charging connector 32 is the charging plug 2 of the inductive charger 20.
4 and corresponds to the conductive charging connector 3
Reference numeral 8 corresponds to the connector insertion portion 14 of the electric vehicle 10. Therefore, the charging plug 24 can be connected to the inductive charging connector 38, and the connector insertion portion 14 of the electric vehicle 10 can be connected to the inductive charging connector 38. As a result, the electric vehicle of the conductive charge type with different standards 1
0 and the inductive charger 20 can be connected by the charging system conversion device 30.

The conductive charging connector 38,
A signal conversion unit 34 and a rectification supply unit 36 are provided in parallel with the inductive charging connector 32. The signal conversion unit 34 includes an inductive signal (a signal corresponding to the inductive charger 20) and a conductive signal (the electric vehicle 1).
Signal corresponding to 0). That is, the signal conversion unit 34 converts the inductive signal into a conductive signal and transmits it to the conductive side (electric vehicle 10 side), and the conductive signal is converted into an inductive signal to the inductive side (inductive charger 20 side). ) Is transmitted to. The rectification supply unit 36 preferably rectifies the electric power supplied from the inductive charger 20 to the electric vehicle 10 and supplies the electric power to the electric vehicle 10 side. In the present embodiment,
The AC power from the inductive charger 20 is converted into DC power and supplied to the electric vehicle 10 side. Because of this, the inductive charger 20 can be used to charge the electric vehicle 10 of the conductive type.

FIG. 2 is a block diagram showing a state in which the charging system conversion device 30 according to the embodiment of the present invention is connected to a conductive charge type electric vehicle 10 and an inductive charger 20. When the charging plug 24 of the inductive charger 20 is inserted (connected) into the inductive charging connector 32, the signal transmitter / receiver 2 of the charging plug 24 is connected as shown in FIG.
6 is arranged to face the signal transmitter / receiver 42 of the inductive charging connector 32. Accordingly, the control signal from the inductive side and the control signal from the inductive side are transmitted and received between the signal transceivers 26 and 42, and the control signal received by the signal transceivers 26 and 42 is transmitted to the inductive side or the inductive side. I am able to communicate. It is preferable that the signal transmitters / receivers 26 and 42 use an optical communication system, but the signal transmitters / receivers 26 and 42 are not limited to this, and may use, for example, a radio communication system.

The signal conversion unit 34 has one side connected to the signal transmitter / receiver 42 and the other side connected to the control unit 16 of the electric vehicle 10 via terminals A and B. As a result, the signals of different standards, that is, the signal from the signal transmitter / receiver 42 and the signal from the control unit 16 are converted into appropriate standards by the signal conversion unit 34 and can be transmitted. In addition, the coil 28 of the charging plug 24
The coil 44 of the inductive charging connector 32
And the coils 28 and 44 form a transformer. An iron core is inserted in each of these coils 28, 44, and these improve the transmission performance. With this transformer, the electric power supplied from the inductive charger 20 is converted and can be sent to the conductive side.

The coil 44 is connected to the anode side of a diode that constitutes the rectifying unit 46 of the rectifying and supplying unit 36, and the inductive is provided by a rectifying device such as a diode, a capacitor, or a choke coil provided in the rectifying unit 46. The AC power supplied from the charger 20 can be rectified into DC power suitable for the electric vehicle 10. The other side of the rectifying unit 46 (cathode side of the diode in the rectifying unit 46) is connected to the contactor 18 of the electric vehicle 10 via terminals X and Y.
Is connected to one side of the contactor 18, and the battery 12 is connected to the other side of the contactor 18. The contactor 18 has a relay circuit inside, and ON / OFF control is performed by the relay circuit to connect or disconnect the battery 12 and a supply path from the terminals X and Y. Therefore, the contactor 1
If 8 is not made conductive (ON state), contactor 1
Even if power is supplied to the battery 8, the battery 12 is not supplied with power, so that the battery 12 can be protected from overcharging and the like.

Further, the charging system conversion device 30 is provided with a rectangular wave oscillating circuit 54 for transmitting a rectangular wave serving as a control signal to the control unit 16 when the circuit is operated by the switch circuit 50. The rectangular wave oscillation circuit 54 is connected to the control unit 16 via the diode Da and the terminal C. The rectangular wave oscillation circuit 5
4 is connected to the battery 52 via the switch circuit 50, and is supplied with power from the battery 52 to generate a rectangular wave.

On the downstream side of the rectifying unit 46 (cathode side of the diode in the rectifying unit 46), a high voltage DC voltage converting circuit (DC-DC converter) 4 is provided.
8 is connected, and the voltage (for example, several hundreds V) supplied to the high-voltage DC voltage conversion circuit 48 is set to low voltage (for example, ten and several V)
To be supplied to the battery 52 and the signal conversion unit 34. The high-voltage DC voltage conversion circuit 48 is also connected to the switch circuit 50 so that the low-voltage converted power can be supplied to the rectangular wave oscillation circuit 54 via the switch circuit 50. A diode Db is provided between the high-voltage DC voltage conversion circuit 48 and the switch circuit 50 and the battery 52 to prevent current from the battery 52 from flowing to the high-voltage DC voltage conversion circuit 48. .

Thus, the power source for the switch circuit 50 and the rectangular wave oscillation circuit 54 can be switched from the battery 52 to the high-voltage DC voltage conversion circuit 48. In addition, the rectangular wave oscillation circuit 54, the high-voltage DC voltage conversion circuit 48,
The switch circuit 50, the battery 52, and the rectification unit 46 constitute the rectification supply unit 36 shown in FIG.

Charging system converter 30 and electric vehicle 10
Are electrically connected by fitting the fitting switch SW0 between the connector insertion portion 14 and the conductive charging connector 38. Further, a magnet 39 is provided on the charging system conversion device 30 side of the fitting switch SW0. When the fitting switch SW0 is fitted, a signal is generated by the magnet 39 and the signal is sent to the control unit 16. I am trying to communicate. When the signal is transmitted to the control unit 16, the control unit 16 is activated by this signal.

In the present embodiment, the switch SW0
Is fitted and the charging system conversion device 30 and the electric vehicle 10 are connected, and the control unit 16 detects that the battery 12 can be charged. After being detected by the control unit 16, a control signal requesting power supply is sent to the inductive charger 20. This control unit 1
The detection in 6 will be described with reference to FIG. FIG. 3 is a schematic circuit diagram of charging system conversion device 30 and electric vehicle 10 according to the embodiment of the present invention.

First, the circuit of the charging system conversion device 30 will be described. The positive electrode side wire 60a of the battery 52 is connected to the terminal C1 via the switch circuit 50. on the other hand,
The wiring 60b on the negative side of the battery 52 is connected to the terminal C2. The wiring 60a is connected to one end of the wiring 60c on the downstream side of the switch circuit 50. The wiring 60c includes a resistor R1, a diode Da, and a rectangular wave oscillation circuit 5
4 is provided, and the other end of the wiring 60c is connected to the wiring 60b on the downstream side of the rectangular wave oscillation circuit 54. The switch circuit 50 is provided with a PNP transistor and a resistor R0. The emitter side of this transistor is connected to the positive electrode of the battery 52 through the wiring 60a, and the base side is connected to the resistor R0. The rectangular wave oscillating circuit 5 is provided on the collector side of the transistor by the wiring 60d.
Connected to 4. In the state where the conductive charging connector 38 is not connected to the connector insertion portion 14, the wirings 60a and 60b are disconnected at the terminals C1 and C2, and the wiring 60c.
Since the diode Da is provided at, the current from the battery 52 does not flow.

Next, the circuit of the electric vehicle 10 will be described. This circuit is formed in the control unit 16. The wiring 13a connected to the terminal C1 is connected to the anode side of the diode D1. The wiring 13a is on the cathode side of the diode D1 and branches into wirings 13c and 13d. The resistor R3 is connected to the wiring 13c, and the wiring 13d
Is provided with a resistor R2 and a switch SWa. The switch SWa is set to an open state when the charging system conversion device 30 and the electric vehicle 10 are separated. The wirings 13c and 13d are respectively connected to the wiring 13b connected to the terminal C2. The terminal C2
Is grounded to the ground (GND).

When the charging system conversion device 30 and the electric vehicle 10 are separated, as described above, the switch SW.
Since a is open, no current flows in each circuit. However, when the circuit of the charging method conversion device 30 and the circuit of the electric vehicle 10 are connected at the terminals C1 and C2 (terminal C in FIG. 2), from the positive electrode of the battery 52, the base of the transistor of the switch circuit 50 and the resistor R0 are connected. , A current flows toward the negative electrode of the battery 52 through the diode D1 and the resistor R3. In this way, when a current flows through the base of the transistor of the switch circuit 50, the wiring 60 flows from the collector of the transistor.
A current flows through the rectangular wave oscillation circuit 54 via d. The rectangular wave oscillating circuit 54 is set so as to generate a rectangular wave when a change in impedance is detected. The rectangular wave oscillating circuit 54 has a resistance R when the above-mentioned current flows.
2. When a current flowing through R3 is detected (this will be described in detail later), a rectangular wave is generated. The switch SWa is set so that it can be opened or closed automatically or manually.

FIG. 4 is a process chart showing the operation of the charging system conversion device 30 in the embodiment of the present invention. First, as shown in step S100, the charging plug 24 of the inductive charger 20 is inserted into the inductive charging connector 32 of the charging method conversion device 30. Then, as shown in step S102, the conductive charging connector 38 of the charging method conversion device 30 is inserted into the connector insertion portion 14 of the electric vehicle 10. As a result, the inductive charger 20 and the electric vehicle 10 are connected by the charging method conversion device 30. At this time, as described above, the circuit of the electric vehicle 10 and the circuit of the charging method conversion device 30 are connected via the terminals C (C1, C2), and the battery 52 is connected via the switch circuit 50, the diode D1, and the resistor R3. Current flows. In the present embodiment, as shown in step S104, it is detected whether or not the above-described current flows by detecting the change in impedance.

As shown in step S106, when a change in impedance is detected by the rectangular wave oscillation circuit 54 (Y
In the case of ES), the rectangular wave oscillating circuit 54 oscillates a rectangular wave having a constant frequency. In this embodiment, 1 kHz
A rectangular wave with a duty ratio of 95% is oscillated at a frequency of. If no change in impedance is detected (NO
In the case of), the processing returns to step S102. When the rectangular wave is oscillated, the rectangular wave (1 kHz control signal) is passed through the diode Da as shown in step S108.
Is supplied to the control unit 16. This allows
The conductive charging connector 38 has the connector insertion portion 14
The control unit 16 can detect the connection to the.

Next, the control unit 16 determines whether or not the battery 12 of the electric vehicle 10 is in a chargeable state, as shown in step S110. The control unit 16 is connected to sensors (not shown) provided in the battery 12 and gears, and these sensors detect the temperature of the battery 12 and the position of the gear. In step S110, when the determination conditions such as whether the temperature range of the battery 12 is proper and whether the gear is in the proper position (neutral or parking position) are not satisfied (in the case of NO), the process of step S110 is performed again. To do. When the determination condition is satisfied (YES), the switch SWa is manually or automatically closed and turned on as shown in step S112. When the switch SWa is closed, the wiring 1c of the resistor R2 is added to the wiring 13c of the resistor R3.
Since current also flows in 3d, the impedance of the circuit changes. The change in impedance is detected by the rectangular wave oscillating circuit 54, and a rectangular wave is transmitted to the control unit 16 as in step S106. When the control unit 16 receives this rectangular wave, it sends a control signal to the contactor 18 to bring the contactor 18 into a conducting state (ON state). As a result, electric power is supplied from the battery 12 to the high-voltage DC voltage conversion circuit 48 via the contactor 18. The high-voltage DC voltage conversion circuit 48 converts the supplied power into a low voltage, supplies the low-voltage power to the rectangular wave oscillation circuit 54 via the switch circuit 50, and also supplies the low-voltage power to the signal conversion unit 34. Yes (step S114). Then, when power is supplied to the signal conversion conversion unit 34, communication is performed between the signal conversion unit 34 and the inductive charger 20, and the equipment status of the inductive charger 20 is confirmed (step S116). In addition, as shown in step S118, communication is performed between the signal conversion unit 34 and the electric vehicle 10,
Check the equipment status on the electric vehicle 10 side. in this way,
After confirming the equipment status of the inductive charger 20 and the electric vehicle 10, as shown in step S120,
The control unit 16 sends necessary data to the inductive charger 20, and the inductive charger 20 starts power supply. And step S
As indicated by 122, necessary data (required power amount, time until full charge, etc.) between the inductive charger 20 and the electric vehicle 10 is converted and transmitted / received. At this time, a part of the electric power supplied from the inductive charger 20 is converted from high voltage to low voltage by the high-voltage DC voltage conversion circuit 48, and the electric power is supplied to the rectangular wave oscillation circuit 54 via the switch circuit 50. As a result, the switch circuit 5
0 or the power source of the rectangular wave oscillation circuit 54 can be switched from the battery 52 to the charging system side of the battery 12. Further, the electric power converted into the low voltage by the high voltage DC voltage conversion circuit 48 is the battery 5
Since it is also supplied to the battery 2, the battery 52 can be charged by the electric power supplied from the charging system side that charges the battery 12. Therefore, the electromotive force of the battery 52 can be reliably ensured. As described above, since the diode Db is provided between the battery 52 and the high-voltage DC voltage conversion circuit 48, there is no possibility that the electric power stored in the battery 52 will flow back to the high-voltage DC voltage conversion circuit 48.

By providing the electric vehicle 10 with the charging system conversion device 30 as described above, charging can be performed at any charging stand of the inductive charger or the conductive charger. In addition,
The contents of the present invention are not limited to the contents of the above-mentioned embodiment, and for example, the battery 52 is not limited to a normal storage battery, but may be a button battery or an electric double layer capacitor.

[0027]

As described above, according to the invention described in claim 1, the conduction charging type electric vehicle can be charged by the induction charging type external charging device having different standards. In addition, since it is possible to supply power from the charging control means after it is confirmed that the connection with the electric vehicle and the preparation for charging the storage battery are completed, it is possible to ensure safety during charging. In addition, it is possible to effectively use the supplied power without wasting it. According to the invention described in claim 2, the power consumption of the starting power source can be kept to a necessary minimum and the power of the starting power source can be held for a long time. According to the invention described in claim 3,
The power of the starting power source can be reliably ensured, and the power can be reliably supplied to the connection detecting means and the connection confirmation signal generating means.

[Brief description of drawings]

FIG. 1 is an overall explanatory diagram showing components of a charging system conversion device, a charging mechanism of an electric vehicle, and a charging stand according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a charging method conversion device, a charging mechanism of an electric vehicle, and a charging stand according to the embodiment of the present invention.

FIG. 3 is a circuit diagram of the charging system conversion device and the electric vehicle according to the embodiment of the present invention.

FIG. 4 is a process diagram showing an operation of the charging system conversion device according to the embodiment of the present invention.

[Explanation of symbols]

10 electric vehicles 12 batteries 20 Inductive Charger 30 Charging system converter 34 Signal conversion unit 36 Rectification supply unit 50 switch circuit 52 batteries 54 Square wave oscillator

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H02J 17/00 H02J 17/00 BF term (reference) 5G003 FA06 GB08 5H030 AA06 AS08 BB04 DD01 DD18 DD30 FF51 5H115 PA11 PG04 PI16 PO06 PO14 PU01 PV02 PV23 QE12 SE06 TI01 TR19 TU16 TU17 UI35

Claims (3)

[Claims] 1. An induction charging external charging device for charging a storage battery for driving a running motor of an electric vehicle by connecting the charging device provided externally to the storage battery for driving a running motor of an electric vehicle, and the charging provided externally. Provided between the device and a conduction charging type electric vehicle in which the storage motor for driving a driving motor of the electric vehicle is connected in a conductive state and the storage battery is charged, and a charger connection means of the conduction charging type electric vehicle, A charging system conversion device connectable to an electric vehicle connection means of the induction charging type external charging device, wherein the connection state to the charger connection means of the conduction charging type electric vehicle and the conduction charging type electric vehicle are Charge control means for detecting a state of the storage battery and generating a charge control signal is provided inside the conduction charging type electric vehicle, and the conduction charging type electric vehicle and the induction charging type external charging device. Charging control signal converting means for converting a charging control signal transmitted and received between the two, and a power converting means for converting the electromagnetic energy supplied from the induction charging type external charging device and generated in the electric vehicle connecting means into DC power. A connection detecting means for detecting connection with the charging control means,
A connection confirmation signal generating means for generating a connection confirmation signal in the charging control means and transmitting it to the charging control means in response to a connection detection signal of the connection detection means, and activating the connection detection means and the connection confirmation signal generation means. A charging method conversion device comprising: a starting power source. 2. The storage battery of the conduction charging type electric vehicle is connected to the charger connecting means of the conduction charging type electric vehicle based on the connection confirmation signal transmitted from the connection confirmation signal generating means to the charging control means. 2. The charging system conversion device according to claim 1, wherein the power source of the connection detecting unit and the connection confirmation signal generating unit is changed from the starting power source to the charging system side of the storage battery. 3. The start-up power source can be charged by the power supplied from the charging system side.
The charging method conversion device described in.