KR101385917B1 - Safety alarm system and method for electric vehicle - Google Patents

Abstract

The present invention relates to a safety alarm system of an electric vehicle and a safety alarm method and, more specifically, to the safety alarm system of the electric vehicle and the safety alarm method which generates an alarm through horn if a hood of the electric vehicle is opened in the state in which a current carrying plug of the electric vehicle is not removed. The safety alarm system of the electric vehicle according to an embodiment of the present invention comprises; an electric motor; a battery which supplies electric energy for operating the electric motor; a current carrying plug which can be attached and detached to the battery; an interlock sensing unit which detects whether the current carrying plug is mounted on the battery or not; a hood opening and closing sensing unit which detects the opening and closing of the hood of the electric vehicle; a horn which generates an alarm sound to the outside; and a control unit which generates a control signal for operating the horn if information detected from the interlock sensing unit and the hood opening and closing sensing unit is inputted, and the hood is opened in the state that the current carrying plug is mounted on the battery. [Reference numerals] (110) Electric motor; (120) Battery; (130) Current carrying plug; (140) Interlock sensing unit; (150) Hood opening and closing sensing unit; (160) Control unit; (170) Horn

Description

Safety alarm system and electric alarm method of electric vehicle {SAFETY ALARM SYSTEM AND METHOD FOR ELECTRIC VEHICLE}

The present invention relates to a safety alarm system and a safety alarm method of an electric vehicle, and more particularly, to a safety alarm system of an electric vehicle that generates an alarm sound through a horn when the hood of the electric vehicle is opened without the electric plug of the electric vehicle removed. And to a safety alarm method.

The electric car gets the driving energy from the electric energy of the battery. When the battery life is over, the electric car is charged or used.

Electric vehicles apply high-voltage current to the electric motor and other parts are driven by electric energy.Therefore, there is a risk of electric shock if a driver or the like opens the hood of the vehicle and touches the engine room. Big.

As a method for preventing a safety accident of an electric vehicle, Published Patent 1998-029730, in the electric vehicle, to indicate that the charging when charging the rechargeable battery to automatically appear, and charging through the electric control means (MCU) The present invention discloses a device that prevents charging interference by preventing the operation of the motor to automatically stop, thereby increasing charging efficiency and preventing charging safety accidents. In addition, Patent Publication No. 1999-0047657 prevents the electric vehicle from starting even when there is a start signal by the driver while the battery is being charged, thereby preventing physical damage of the charging device due to the driving while the battery is being charged and a short accident. The method is disclosed. In addition, Patent Publication No. 2011-0053046, by installing an electrode having a sensing function in the charging plug, it is possible to prevent the electric shock accident in advance by stopping the charging in the state that the user's hand is in contact with the charging of the electric vehicle and safely A method of charging is disclosed.

However, the related arts mainly block electric flow during charging of electric vehicles to prevent the occurrence of an electric shock accident, and suggest a method that can call attention to the driver or the like whether the electric current is cut off in the entire electric vehicle for general vehicle inspection. I'm not doing it.

Therefore, there is a need for a method of informing a driver or the like whether the electric vehicle is cut off the current flow as a whole.

Patent Publication 1998-029730 (Kia Motors Co., Ltd.) Patent Publication 1999-0047657 (Hyundai Motor Company) 1999.07.05. Patent Publication 2011-0053046 (Eco Car Co., Ltd.) 2011.05.19.

The present invention provides a safety alarm system and a safety alarm method for an electric vehicle that can generate an alarm sound through the horn when the hood of the electric vehicle is opened without the power plug removed.

Safety alarm system for an electric vehicle according to an embodiment of the present invention for achieving the above object, an electric motor; A battery for supplying electrical energy for operating the electric motor; A power supply plug detachable from the battery; An interlock detector detecting whether the energizing plug is mounted in the battery; Hood opening and closing detection unit for detecting whether the hood of the electric vehicle opening and closing; A horn for generating an alarm sound to the outside; And a controller for inputting information detected by the interlock detection unit and the hood opening / closing detection unit, and generating a control signal for operating the horn when the hood is opened while the energization plug is mounted from the battery. Include.

The electric motor may be disposed inside the hood, and the battery may be disposed behind the electric vehicle.

The safety alert system of an electric vehicle includes a charging port connected to a charging terminal of a charging station for supplying electrical energy; A charger for charging external electrical energy transferred through the charging hole with the battery; A converter for converting the external electrical energy into electricity of a voltage appropriate for the battery, or converting the voltage such that electrical energy transmitted from the battery corresponds to the electric capacity of each component inside the electric vehicle; And a speed reducer for reducing rotation energy generated by the electric motor.

The electricity supply plug may include a connection pin connected to the battery; And a connector configured to be in contact with the connecting pin to conduct electricity.

The interlock detector may include an electronic control unit (ECU) configured to recognize a current flowing while the connection pin and the connector contact each other.

The hood opening and closing detection unit may include a position sensor that detects a position of the latch of the hood.

The control unit may include a BCM (Body Control Module) for controlling the overall flow of electricity used in the electric vehicle.

Safety warning method for an electric vehicle according to an embodiment of the present invention, the step of detecting whether the electric plug is mounted on the battery of the electric vehicle in the interlock detector; Detecting whether the hood of the electric vehicle is opened or closed by a hood open / close detection unit; Inputting information detected by the interlock detector and the hood open / close detector to a controller; Generating a control signal for operating a horn in the control unit when the hood is opened while the energizing plug is mounted to the battery; And generating an alarm sound in the horn.

The interlock detecting unit may include an electronic control unit (ECU) to recognize a current flowing while the connection pins of the energizing plug and the connector are in contact with each other.

The hood open / close detection unit may include a position sensor that detects a position of the latch of the hood, and detect whether the hood is opened or closed according to a change in the position of the latch.

The control unit includes a BCM (Body Control Module) for controlling the overall flow of electricity used in the electric vehicle, the BCM checks whether the hood latch is fastened, and communicates signals with the ECU to determine whether the power plug is connected If it is determined that the horn needs to be operated by receiving information about the horn, the horn can be controlled to operate.

The safety alarm system and the safety alarm method of the electric vehicle of the present invention generate an alarm sound through the horn when the hood of the electric vehicle is opened without the power plug removed, thereby calling attention to the driver and the like, thereby preventing an electric shock accident in advance. It works.

1 is a block diagram illustrating a safety warning system of an electric vehicle according to an embodiment of the present invention.
2 is a diagram schematically illustrating a state in which a safety warning system of an electric vehicle according to an embodiment of the present invention is applied to a vehicle.
3 is a view for explaining the function of the energization plug.
4 and 5 are views for explaining the coupling structure of the energized plug end.
6 is a flowchart illustrating a safety warning method of an electric vehicle according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the safety alarm system and safety alarm method of an electric vehicle according to an embodiment of the present invention.

1 is a block diagram illustrating a safety warning system of an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 1, the safety alarm system 100 of the present invention includes an electric motor 110, a battery 120, an energized plug 130, an interlock detector 140, a hood opening and closing detection. The unit 150 includes a control unit 160 and a horn 170.

The electric motor 110 receives electric power from the battery 120 to drive the vehicle. The battery 120 has a high capacity for driving an electric vehicle. For example, the battery 120 supplies a 400 V voltage for driving an electric motor, a heating PTC, an AC compressor, or an ABS, an air bag, an AV system, an EPS, a meter, or an air conditioner. It can be configured to selectively supply a 12V voltage for driving the lamps, and the like.

The energization plug 130 is detachable to the side of the battery 120, when the energization plug 130 is mounted to the battery 120, the electrical energy of the battery 120 can be provided to other parts of the electric vehicle, When the energization plug 130 is removed from the battery 120, the electrical energy transfer of the battery 120 is blocked.

When the driver or the like wants to open the hood and inspect the engine room for checking the electric vehicle, the electric current plug 130 is removed from the battery 120 in advance to block the current flow, thereby preventing an electric shock accident. However, if the driver or the like thinks that the power plug 130 has been removed even though it has not been removed from the battery 120 or if the power plug 130 is touched inside the electric vehicle without being removed from the battery 120 for other reasons, There is a high risk of electric shock.

Therefore, the present invention has a configuration to prevent the occurrence of an electric shock accident by performing a function to determine whether the energized plug 130 is physically removed from the battery 120 to warn the driver and the like.

To this end, the interlock detector 140 detects whether the energization plug 130 has been removed from the battery 120. When the energization plug 130 and the battery 120 are physically connected, while energization is performed, electrical energy of the battery 120 may be provided to other components of the electric vehicle, and the interlock detector 140 may supply the energization plug 130. ) And detects the flow of electricity according to the connection state of the battery 120 to determine whether the connection.

On the other hand, the hood opening and closing detection unit 150 detects whether the hood of the electric vehicle is open. In general, the hood is located on the front of the vehicle, the lock is held by the latch, and can be opened by flipping up when the latch is released. The hood opening / closing detection unit 150 may include a position sensor that detects a position of the latch of the hood, thereby detecting whether the hood is opened or closed according to a change in the position of the latch.

The control unit 160 controls the horn 170 based on the connection state information of the energization plug 130 detected by the interlock detection unit 140 and the state of open / closed state of the hood detected by the hood open / close detection unit. Create That is, even though the energization plug 130 is not removed from the battery 120, when the hood opening is detected, the controller 160 generates an alarm sound by the horn 170 to alert the driver or the like. You can wake up.

2 is a diagram schematically illustrating a state in which a safety warning system of an electric vehicle according to an embodiment of the present invention is applied to a vehicle.

2, an electric motor 110, a charging hole 112, a charger 114, a converter 116, a reducer 118, and the like are provided in an engine room inside the hood 10 of the electric vehicle.

The charging port 112 is a portion connected to the charging terminal 210 of the charging station 200 for supplying electrical energy. When the charging terminal 210 is connected to the charging port 112, electrical energy is transferred from the charging station 200 to charge the battery 120.

The charger 114 is a connection box that charges the external electrical energy transferred through the charging port 112 to the battery 120. The converter 116 converts the external electrical energy into electricity of a voltage appropriate for the battery 120, or converts the voltage such that the electrical energy transmitted from the battery 120 corresponds to the electric capacity of each component inside the electric vehicle.

The reducer 118 decelerates the rotational energy generated by the electric motor 110 and converts energy by the reduced speed into torque.

In one embodiment of the invention, the electric motor is disposed inside the hood and the battery is disposed behind the electric vehicle. In addition, the energization plug 130 is coupled to the side of the battery 120.

3 is a view for explaining the function of the energization plug.

Referring to FIG. 3, when a pair of connection pins 132a and 132b at the ends of the electricity supply plug 130 are connected to the battery 120, the battery 120 is connected by connecting a disconnected portion of the internal circuit of the battery 120. Allow electrical energy to be transferred to other components.

As described above, the electrical energy of the battery 120 may be converted through the converter 116 to correspond to the electric capacity of each component inside the electric vehicle.

4 and 5 are views for explaining the coupling structure of the energized plug end.

First, referring to FIG. 4, (A) is a longitudinal cross-sectional view of the energizing plug end, (B) is a cross sectional view of the energizing plug end, and a state in which the energizing plug 130 is not connected to the battery 120. The pair of connecting pins 132a and 132b of the energizing plug 130 are protruded forward, and the rear ends 133a and 133b of the connecting pins 132a and 132b are not connected to the connector 134.

On the other hand, referring to FIG. 5, (A) is a longitudinal cross-sectional view of the energizing plug end, (B) is a cross sectional view of the energizing plug end, and a state in which the energizing plug 130 is connected to the battery 120. The pair of connecting pins 132a and 132b of the energizing plug 130 are moved backwards by a predetermined distance while being connected to the battery 120, and the rear ends 133a and 133b of the connecting pins 132a and 132b are connected to the connector ( 134). This is the same state as in FIG. 3 described above, and the disconnected part of the internal circuit of the battery 120 is connected by the connection pins 132a and 132b to allow the transfer of electrical energy.

Here, the connection pins 132a and 132b of the electricity supply plug 130 may be elastically coupled to the battery 120. That is, when the connecting pins 132a and 132b are coupled to the battery 120, the connection pins 132a and 132b may move backwards by a predetermined distance, and when separated from the battery 120, may protrude forward again by a predetermined distance moved backwards.

6 is a flowchart illustrating a safety warning method of an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 6, first, the interlock detecting unit 140 detects whether the energization plug 130 is mounted in the battery 120 (S610). If the energizing plug 130 is removed from the battery 120, since electric energy is not transmitted by the battery 120, the driver may perform a task such as checking a vehicle.

Here, as shown in FIGS. 4 and 5, the ends of the energization plug 130 are provided with connection pins 132a and 132b and are energized according to the physical connection state of the connection pins 132a and 132b and the battery 120. This can be done. When the connection pins 132a and 132b and the battery 120 are connected, current may flow while the connection pins 132a and 132b move backwards by a predetermined distance to contact the connector 134, and the interlock detector 140 Equipped with an electronic control unit (ECU), it is possible to check whether the electricity supply plug 130 is connected by recognizing the current flow in the ECU.

Next, the hood open / close detection unit 150 detects whether the hood is opened (S620). In one embodiment of the present invention, the hood opening and closing detection unit 150 has a position sensor for detecting the position of the latch of the hood, it can detect whether the hood is opened or closed in accordance with the position change of the latch.

If the hood is not opened, there is a low possibility that an electric shock accident may occur to the driver or the like, so that subsequent measures such as an alarm sound are not continued.

If the hood is open, the current is likely to remain in the engine room inside the hood when the power plug 130 is mounted on the battery 120, so that an alarm sounds to alert the driver. There is.

The control unit 160 is based on the connection state information of the power supply plug 130 detected by the interlock detection unit 140 and the opening and closing state information of the hood detected by the hood open / close detection unit, the power supply plug 130 is a battery 120 Although not removed from the control, when the hood is open, the horn 170 controls to generate an alarm sound (S630).

The controller 160 may include a body control module (BCM) for controlling the overall flow of electricity used in the electric vehicle. When the BCM checks whether the hood latch is fastened and communicates signals with the ECU, and determines that the horn 170 should be operated by receiving information on whether the energization plug 130 is connected, the horn 170 operates. By controlling so as to generate an alarm sound.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

10: hood
100: safety alarm system
110: electric motor
112: charging hole
114: charger
116: converter
118: reducer
120: battery
130: energized plug
132: connection pin
133: rear end of the connecting pin
134: connector
140: interlock detector
150: hood opening and closing detection unit
160:
170: Horn
200: charging station
210: charging terminal

Claims (11)

Electric motors;
A battery for supplying electrical energy for operating the electric motor;
A power supply plug detachable from the battery;
An interlock detector detecting whether the energizing plug is mounted in the battery;
Hood opening and closing detection unit for detecting whether the hood of the electric vehicle opening and closing;
A horn for generating an alarm sound to the outside; And
And a controller for inputting information detected by the interlock detection unit and the hood opening / closing detection unit, and generating a control signal for operating the horn when the hood is opened while the energization plug is mounted from the battery. Safety alarm system of an electric vehicle, characterized in that. The method of claim 1,
The electric motor is disposed inside the hood, and the battery is disposed behind the electric vehicle. The method of claim 1,
A charging port connected with a charging terminal of a charging station for supplying electrical energy;
A charger for charging external electrical energy transferred through the charging hole with the battery;
A converter for converting the external electrical energy into electricity of a voltage appropriate for the battery, or converting the voltage such that electrical energy transmitted from the battery corresponds to the electric capacity of each component inside the electric vehicle; And
And a speed reducer for reducing the rotational energy generated by the electric motor. According to claim 1, The energized plug,
A connection pin connected to the battery; And
And a connector configured to be in contact with the connecting pin to energize the electric vehicle. The method of claim 4, wherein the interlock detection unit,
And an electronic control unit (ECU) configured to recognize an electric current flowing while the connection pin and the connector are in contact with each other. The method of claim 1, wherein the hood opening and closing detection unit,
And a position sensor for sensing a position of the latch of the hood. The apparatus of claim 1,
Safety alarm system of an electric vehicle comprising a Body Control Module (BCM) for controlling the overall flow of electricity used in the electric vehicle. Detecting, by the interlock detecting unit, whether an electric current plug is installed in the battery of the electric vehicle;
Detecting whether the hood of the electric vehicle is opened or closed by a hood open / close detection unit;
Inputting information detected by the interlock detector and the hood open / close detector to a controller;
Generating a control signal for operating a horn in the control unit when the hood is opened while the energizing plug is mounted to the battery; And
And generating an alarm sound in the horn. The safety alarm method of claim 8, wherein the interlock detection unit includes an electronic control unit (ECU) to recognize a current flowing while the connection pin of the energization plug and the connector are in contact with each other. The method of claim 8, wherein the hood opening and closing detection unit comprises a position sensor for detecting the position of the latch of the hood, safety alarm method for an electric vehicle, characterized in that for detecting the opening or closing of the hood according to the change in the position of the latch. The method of claim 9 or 10, wherein the control unit includes a BCM (Body Control Module) for controlling the overall flow of electricity used in the electric vehicle, the BCM checks whether the hood latch is fastened, and the mutual signal with the ECU If the communication is determined to receive the information on whether the power supply plug is connected to the horn should be operated, the safety warning method for an electric vehicle, characterized in that to control to operate the horn.

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