JPH09219901A - Misstart preventer when charging electric motor car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the misstart of an electric motor car during charging by supplying a signal so as to break the power transmission from a motor to a clutch, and controlling a drive mechanism when it is in charge by a detection means. SOLUTION: A power transmission system from a motor 2 to a tire 3 is provided with a clutch 7, and the clutch 7 is operated by the signal from a control means 8, and the power to the tire 3 is transmitted or broken. It is detected that it is in charging by the currents from a charger 4 at the time of having connected connectors 5A and 5B, and the detection signal is sent to a control means 8, and during charging, the clutch 7 is kept in cut off condition. Hereby, during charging, it is kept in such condition that the power transmission from the motor 2 to the tire 3 is broken at all times, which can prevent the electric motorcar from being started by a mistake.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing an incorrect starting of an electric vehicle during charging.

[0002]

2. Description of the Related Art Charging of an electric vehicle is generally performed by connecting a charger and a battery of the vehicle through a connector, and it is necessary to prevent the vehicle from starting accidentally during that time. is there. The following is known as a technique therefor. The main switch that controls the motor of the electric vehicle cannot be charged when it is on, and can be charged only when it is off.

Japanese Laid-Open Patent Publication No. 2-18141 discloses a technique for locking the brake so that the wheels do not rotate during charging. That is, it comprises a parking brake system for locking / unlocking wheels, an electric actuator for driving the brake system, and a parking brake switch for supplying a lock or unlock signal to the actuator. The charging detection means detects that the electric vehicle is being charged, and the control circuit that supplies a lock signal to the electric actuator when the detection means recognizes that the parking brake switch is in the charging state. The parking brake is locked regardless. Similar to these techniques, the present invention also aims to prevent damage to devices such as a charger, a battery, and a connector due to an erroneous start of an electric vehicle during charging using a connector.

[0004]

In view of the above-mentioned circumstances, the present invention is configured to cut off the power transmission from the motor to the tire or cut off the power supply from the battery to the motor during charging. That is, the former detects a clutch provided in a power transmission system from a motor to a tire in an electric vehicle, a drive mechanism that operates the clutch to transmit / shut off power from the motor to the tire, and that charging is in progress. And a control means for the drive mechanism that supplies a signal to cut off power transmission from the motor to the clutch when charging is being performed by the detection means. The latter supplies a switch for connecting the charger to the motor or the battery and connecting it, a means for detecting that the battery is being charged, and a signal for connecting the battery charger to the battery when the battery is being charged by the detecting means. And a control means for performing the control.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. FIG. 1 is a schematic diagram of an apparatus of the present invention configured to interrupt power transmission from a motor to a tire during charging. The electric vehicle includes a battery 1, a motor 2 and a tire 3. The electric vehicle supplies electric power from the battery 1 to operate the motor 2, transmits the power to the tire 3 through a transmission system, and rotates by the rotation. Further, the battery 1 is provided with a connector 5A for connecting to the charger 4. On the other hand, the charger 4 also has a connector 5B for connecting to the battery 1, and is used by connecting the outlet 6 to an AC power source or the like (not shown).

Here, the clutch 7 is provided in the power transmission system from the motor 2 to the tire 3. The clutch 7 is operated based on a signal from the control means 8 to transmit / disconnect the power to the tire 3. In this example, the state in which charging is being performed is detected by the current from the charger 4 when both connectors 5A and 5B are connected, and the detection signal is sent to the control means 8 and the clutch 7 is disengaged during charging. Configured to be maintained at. Although not shown in FIG. 1, it goes without saying that there is driving means such as a motor for operating the clutch 7. With this configuration, the power transmission from the motor 2 to the tire 3 is always cut off during charging, and the electric vehicle is not accidentally started. When charging is completed, the clutch 7 is engaged by a signal from the control means 8 and the electric vehicle is returned to a running state.

FIG. 2 is a schematic view of the device of the present invention configured to cut off the power supply from the battery to the motor during charging. The main configuration of an electric vehicle and a charger using this device is similar to that of the device of FIG. 1, and a switch 9 is provided instead of the clutch. The switch 9 switches the charger 4 to either the battery 1 or the motor 2 for connection. Similar to the device of FIG. 1, a signal indicating that charging is being performed is sent from the current in the connectors 5A and 5B, and the switch 9 is switched based on the signal. That is, the charger 4 is connected only to the battery 1 and not to the motor 2 during charging. Therefore, it becomes impossible to supply electric power to the motor 2, and it is possible to prevent the electric vehicle from being accidentally started. Then, when charging is completed, the switch 9 is switched to connect the battery 1 and the motor 2 to return the electric vehicle to a state in which it can run. Although a tire is not shown in FIG. 2, the power from the motor 2 is transmitted to the tire via a transmission system as in FIG.

[0008]

As described above, according to the device of the present invention, even if the vehicle is mistakenly started while charging through the connector, the power transmission from the motor to the tire is cut off. Or, the electric vehicle cannot be started because the power supply from the battery to the motor is cut off. Therefore, it is possible to reliably prevent an erroneous start of the vehicle during charging with a simple configuration and prevent damage to devices such as the connector.

[Brief description of drawings]

FIG. 1 is a schematic view of a device of the present invention in which a clutch is provided in a power transmission system from a motor to a tire.

FIG. 2 is a schematic view of the device of the present invention provided with a switch for selectively connecting the charger to the motor or the battery.

[Explanation of symbols]

 1 Battery 2 Motor 3 Tire 4 Charger 5 A.5B Connector 6 Outlet 7 Clutch 8 Control Means 9 Switch

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[Procedure amendment]

[Submission date] June 11, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

In view of the above circumstances, the present invention is configured to cut off the power transmission from the motor to the tire or cut off the power supply from the battery to the motor during charging. That is, the former detects a clutch provided in a power transmission system from a motor to a tire in an electric vehicle, a drive mechanism that operates the clutch to transmit / shut off power from the motor to the tire, and that charging is in progress. And a control means for the drive mechanism that supplies a signal to cut off power transmission from the motor to the clutch when charging is being performed by the detection means. The latter is electric
A switch for switching and connecting the battery of the diesel car to a charger or a motor , means for detecting that charging is being performed, and a signal to the switch for connecting the charger to the battery when charging is being performed by the detection means. And a control means for supplying.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

FIG. 2 is a schematic view of the device of the present invention configured to cut off the power supply from the battery to the motor during charging. The main configuration of an electric vehicle and a charger using this device is similar to that of the device of FIG. 1, and a switch 9 is provided instead of the clutch. This switch 9 charges the battery 1
It is connected by switching to either the container 4 or the motor 2 . Similar to the device of FIG. A signal indicating that the battery is being charged is sent from the current in 5B, and the switch 9 is switched based on the signal. That is, during charging, the charger 4 is connected only to the battery 1 and the motor 2
Is not connected to. Therefore, it becomes impossible to supply electric power to the motor 2, and it is possible to prevent the electric vehicle from being accidentally started. Then, when charging is completed, the switch 9 is switched to connect the battery 1 and the motor 2 to return the electric vehicle to a state in which it can run. Although a tire is not shown in FIG. 2, the power from the motor 2 is transmitted to the tire via a transmission system as in FIG.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location H02J 7/00 303 H02J 7/00 303Z (72) Inventor Arisaka Akisaka 1-chome, Shimaya, Konohana-ku, Osaka No. 1-3 Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Kunihiko Watanabe 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Prefecture Sumitomo Denso Co., Ltd. (72) Inventor Kenichi Kanagawa Nishi, Yokkaichi-shi, Mie Prefecture 1-14 Suehirocho Sumitomo Wiring Systems, Ltd. (72) Inventor Tsutomu Tanaka 1-1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Ltd.

Claims (2)

[Claims] 1. A clutch provided in a power transmission system from a motor to a tire in an electric vehicle, a drive mechanism for operating the clutch to transmit / shut off power from the motor to the tire, and charging during charging. An erroneous start-up during charging of an electric vehicle, characterized by including: a detecting unit; and a control unit of a drive mechanism that supplies a signal to cut off power transmission from the motor to the clutch when the detecting unit is charging. Prevention device. 2. A switch for switching and connecting the charger to a motor or a battery of an electric vehicle, means for detecting that charging is being performed, and connecting the charger to the battery when charging is being performed by the detecting means. And a control means for supplying a signal to the switch as described above.