KR102335829B1 - Rapid charging apparatus for electric vehicle having automatic cable arrangement - Google Patents

Abstract

The present invention relates to a quick charger for an electric vehicle having an automatic charging cable take-out control sensor. The electric vehicle quick charger according to this embodiment includes a charger main body in which a cable connector is formed at a predetermined height while having a connector holder on one side. , a plurality of rotating rollers, a cable lead-out portion coupled to be fixed to a predetermined height of the charger body, a front end portion is provided with a connector connected to a connection inlet of an electric vehicle, and a rear end portion is fixedly coupled to the cable connector, The middle part includes a charging cable coupled to the cable lead-out part so as to be inserted between the rotating rollers, and a control unit for controlling the driving of the cable lead-out part in response to a charging request or charging end, wherein the cable lead-out part includes: It has a guide pin disposed at the front or the rear to guide the charging cable to pass between the rotating rollers at a fixed position, and is configured to always take out or return the charging cable by driving the rotating roller.

Description

Rapid charging apparatus for electric vehicle having automatic cable arrangement

The present invention relates to an electric vehicle rapid charger having a charging cable automatic take-out control sensor.

Recently, the demand for environmentally friendly electric vehicles is increasing in accordance with the global trend of strengthening environmental regulations and reducing energy costs. In order to expand the spread of electric vehicles, it is essential to build a charging infrastructure that can charge electric vehicle batteries.

The electric vehicle charger is a device that supplies electric energy supplied from a power source to the battery of an electric vehicle. A guide display and a charging cable for connecting the charger to the battery of the electric vehicle are provided.

In such an electric vehicle charger, electric energy is supplied to the battery of the electric vehicle by connecting the charging connector provided at the end of the charging cable to the connection inlet installed in the electric vehicle. The charging cable is provided with a length of about 3 to 5 m, and is generally arranged and maintained in a state that it is wound or hung on the cradle provided on the side of the charger. do.

At this time, a portion of the middle portion of the drawn out charging cable may touch the floor due to its length. The part in contact with the floor may be damaged such as being worn out by repeated use, and may also be contaminated by contaminants on the floor. As such, when the damaged portion of the charging cable is repeatedly left on the floor, an electrical safety accident may occur, and a problem of providing discomfort to the user may occur due to the contaminated portion.

As a way to solve this problem, Korean Patent Registration No. 10-1608380 (Prior Document 1) introduces a charging control module, and the charging control module of Prior Document 1 is unwound while the power cable is wound on the rotating shaft of the cable reel. It is configured to return as it is drawn out and rewound.

However, the charging control module of Prior Document 1 can be applied only to a slow charging device to which a thin cable is applied. In order for a cable to be easily wound on a circular reel, it should have a small diameter of about 10 mm or less.

In addition, in recent years, as the spread of ultra-fast or rapid chargers is expanding, a charging cable has to withstand large power transmission, so a thicker power line is used, and a separate cooling line for cooling the power line is also provided inside the cable. As described above, the charging cable applied to the ultra-fast or fast charging device has a disadvantage in that it requires considerable effort and force to withdraw from the charging device due to its thick diameter and heavy weight, and to mount it in its original position after use. In particular, as the number of female drivers or elderly drivers is increasing recently, it is difficult to easily control a thick and heavy charging cable, which is emerging as a major problem of ultra-fast or fast chargers.

On the other hand, as a method to prevent the charging cable from touching the floor or being dragged in the rapid charger, Korean Utility Model Publication No. 20-2018-0001337 (Prior Document 2) introduces an automatic reel device for an electric vehicle charger. The automatic reel device for an electric vehicle charger of Prior Document 2 is configured to connect a spring balance (wire) to a charging cable and mount it on a body structure to draw out or return the charging cable by the tensile force of the spring balance.

However, as in Prior Document 2, in the charging cable using the spring balance, since the spring balance pulls the cable, the user must pull the cable with a force stronger than the tensile force of the spring balance along with the weight of the cable itself, so the elderly with weak strength should not use it. It has a difficult drawback. In addition, in the charging cable using the spring balance, since the charging cable is continuously pulled by the spring balance even during charging, the charging cable can be easily damaged, and connection errors between the connector and the connection inlet occur frequently, and even damage the connection inlet. The concern is very high.

Therefore, in the rapid charger that is increasing in recent years, there is an urgent need for a fast charger that can be easily used by the elderly and weak while preventing the charging cable from touching the floor, the stability of cable use is secured, and the cable can be easily stored and organized. have.

Korean Patent No. 10-1608380 (Registered on March 28, 2016, charging control module and charging control method) Korean Utility Model No. 20-208-0001337 (opened on May 9, 2018, automatic reel device for electric vehicle charging)

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide an electric vehicle quick charger capable of improving convenience of use even for users with relatively weak power while preventing the charging cable from touching the floor.

Another object of the present invention is to provide a quick charger for an electric vehicle in which a connector of a charging cable and a connection inlet of an electric vehicle can be easily connected, and the connection is stably maintained even during charging, thereby ensuring safety of use.

Another object of the present invention is to provide a fast charger for an electric vehicle having a charging cable automatic arrangement structure in which a charging cable is automatically drawn out and drawn in according to whether the electric vehicle is connected or not charged.

Another object of the present invention is to provide a fast charger for an electric vehicle that induces the charging cable to be drawn out and returned in the correct direction so that the charging cable can be easily and safely drawn out and returned with a small load.

The electric vehicle quick charger according to this embodiment for achieving the above object includes a charger body having a connector holder on one side and a cable connector formed at a predetermined height, a plurality of rotating rollers, and the charger A cable lead-out part coupled to be fixed to a predetermined height of the body is provided with a connector connected to the connection inlet of the electric vehicle at the front end, the rear end is fixedly coupled to the cable connector, and the middle part is inserted between the rotating rollers. A charging cable coupled to the lead-out part, and a controller for controlling the driving of the cable lead-out part in response to a charging request or charging termination, wherein the cable lead-out part is disposed in front or behind the rotating roller so that the charging cable is fixed It has a guide pin for guiding it to pass between the rotating rollers at a position, and is configured to take out or return the charging cable at all times by driving the rotating roller.

In addition, in the electric vehicle quick charger of this embodiment, the cable lead-out unit further includes a sensor module for detecting a length at which the charging cable is drawn out or returned, and to draw out or return the charging cable only within a range of a certain length. can be configured.

In addition, in the electric vehicle quick charger of this embodiment, the sensor module may include a color detection sensor coupled to the cable lead-out portion, and a color area portion formed on a surface of the charging cable.

In addition, in the electric vehicle quick charger of this embodiment, the guide pin is located on the left and right sides of the charging cable, a pair of vertical guide pins for preventing the left and right direction deviation of the charging cable, and the upper and lower sides of the charging cable It may include a pair of horizontal guide pins positioned to prevent vertical deviation of the charging cable.

In addition, in the electric vehicle quick charger of this embodiment, the first sensor for detecting the coupling between the connector of the charging cable and the connector holder of the charger body, the coupling between the connector of the charging cable and the connection inlet of the electric vehicle Including a second sensor for sensing, further comprising a sensor unit for detecting a charging request or charging termination using the charging cable, the control unit may control the driving of the cable lead-out unit according to the detection signal of the sensor unit.

The electric vehicle quick charger of this embodiment has the effect of improving the convenience of use even for users with weak power by automatically withdrawing and returning the charging cable according to a charging request or a charging end signal.

In addition, in the electric vehicle quick charger of this embodiment, since the charging cable does not touch the ground during the charging process, contamination does not occur, thereby improving safety in use.

In addition, since an external force is not applied to the charging cable during charging, the electric vehicle quick charger of this embodiment can maintain a stable connection state, thereby improving safety in use.

In addition, the electric vehicle quick charger of the present embodiment can maintain its original position even when the charging cable is repeatedly drawn out and returned, thereby improving safety and durability in use.

1 is a perspective view showing a fast charger according to the present embodiment;
2 is a perspective view showing a state in which the fast charger of FIG. 1 is connected to an electric vehicle;
3 is a perspective view showing the main part of the cable take-out unit according to the present embodiment;
4 and 5 are cross-sectional views showing the cable take-out unit of FIG. 3;
6 is a block diagram showing the main configuration of the fast charger according to the present embodiment.

The present invention and the technical problems achieved by the practice of the present invention will be made clear by the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a fast charger according to the present embodiment, and FIG. 2 is a perspective view showing a state in which the fast charger of FIG. 1 is connected to an electric vehicle.

First, referring to FIG. 1 , the electric vehicle quick charger 100 of this embodiment is a stand-type charging device installed in a parking lot or charging station of a multi-family house or public facility, and is connected to an external power source (not shown) to provide power through a cable. As a device for sending out a main body 110 having a predetermined shape, a user manipulation unit 120 installed on the front of the main body, a connector holder 130 provided on one side of the main body, and the other side of the main body It includes a cable lead-out unit 140 to be installed, and a charging cable 150 having one end connected to the main body to transmit power. In addition, various control modules (not shown) for transmitting power are provided inside the main body 110 .

Specifically, the main body 110 functions as an outer case of the quick charger 100 while forming an accommodating space therein, and combines the user manipulation unit 120 , the connector holder 130 , and the cable lead-out unit 140 . . The body 110 is a metal or non-metal material having sufficient rigidity and may have a hexahedral shape having a predetermined height, and may have various shapes depending on the location where the rapid charger 100 is installed. In particular, the main body 110 preferably has a sufficient height so that the connected charging cable 150 can be mounted without touching the floor, and the cable connector 111 is formed at a position having a predetermined height.

The user operation unit 120 is disposed on the front side of the main body 110 and is a configuration for user operation. The display screen 121 for notifying the charging information as an image, the voice transmitting unit 122 for notifying the charging information with a voice, the charging charge It may include a payment unit 123 for payment and an emergency button unit 124 for responding to an emergency situation.

The display screen 121 may be composed of a conventional touch panel capable of touch manipulation, and the payment unit 123 is provided by a touch method through the display screen 121, or a tag method using RFID or an insertion method using a card reader. It can be provided by means such as. The voice transmission unit 122 may be configured as a speaker module guiding the charging process by voice, and the emergency button unit 124 may stop charging when the user pushes the button when an emergency situation occurs during the charging process. is configured to

The connector holder 130 is configured to accommodate the connector 151 of the charging cable 150 , and may be formed at a predetermined height in front of the main body 110 .

The cable lead-out unit 140 is mounted and fixed at a predetermined height so as not to touch the floor when the charging cable 150 is not in use, and at the same time draws out and returns the charging cable 150 during a charging operation. That is, when the user uses the charging cable 150 to charge the electric vehicle, the charging cable 150 is drawn out so that it can be extended to a predetermined length in front of the main body 110, and when charging is completed, it is again return to the original position. Accordingly, the cable lead-out unit 140 automatically draws out and returns the charging cable 150 so that the charging cable 150 can be easily connected to the electric vehicle without a user's effort. In the drawings of this embodiment, the configuration in which the cable lead-out unit 140 is disposed outside the body 110 is exemplified, but a configuration disposed inside the body 110 is also possible, and the position at which the cable lead-out part 140 is disposed is It can be changed as needed.

The charging cable 150 is configured to transmit external power supplied to the rapid charger 100 to the electric vehicle, and the rear end is electrically connected to the power supply module through the cable connector 111 of the main body 110, and the middle portion It is coupled to pass through the cable lead-out unit 140, and the front end is provided with a connector 151 connected to the connection inlet of the electric vehicle. The charging cable 150 is provided with a plurality of conductive wires, such as a power line for fast charging and a signal line for charging control, inside the outer shell of the insulating material, and a cooling line for cooling the power line may also be provided. In particular, the charging cable 150 of this embodiment has a larger diameter than a cable for a slow charger in order to supply sufficient power as a cable for rapid charging, and may have a diameter of 30 mm or more depending on the amount of power.

The cable connector 111 and the cable lead-out part 140 are formed to be spaced apart from each other by a predetermined distance at a position having a predetermined height in the main body 110 . Therefore, the charging cable 150 is stretched downward between the cable connector 111 and the cable lead-out unit 140 to reciprocate in the vertical direction, so that it can be stored and organized to have a sufficient length. As such, when the charging cable 150 is mounted while being reciprocated in the vertical direction, a length that can be sufficiently drawn out to the front of the main body 110 is secured.

When charging the electric vehicle, since a predetermined distance is formed between the electric vehicle 200 and the rapid charger 100, in order to charge the electric vehicle 200, the charging cable 150 is a sufficient length in front of the main body 110. should be withdrawn Referring to FIG. 2 , in the case of charging the electric vehicle 200 , in the fast charger 100 of this embodiment, after the connector 151 of the charging cable 150 is separated from the connector holder 130 , the charging cable 150 is ) is withdrawn from the main body 110 in a state supported by the cable lead-out unit 140 , the connector 151 is connected to the connection inlet 210 of the electric vehicle 200 . At this time, since the withdrawal of the charging cable 150 is automatically made by the cable lead-out unit 140, user manipulation is made easy, the charging cable 150 does not touch the ground, and a separate external force does not act on the charging cable 150 Therefore, safety is ensured during the charging process.

3 is a perspective view showing the main part of the cable lead-out part according to the present embodiment, FIGS. 4 and 5 are cross-sectional views showing the cable lead-out part of FIG. 3, and FIG. 6 is a block diagram showing the main configuration of the quick charger according to the present embodiment. am.

The cable lead-out unit 140 of this embodiment is composed of a plurality of rotating rollers and guide pins. 3 to 5 , the cable lead-out unit 140 includes a driving roller 141 and a pressure roller 142 spaced apart from the driving roller 141 by a predetermined distance, and the driving roller ( 141 and the pressure roller 142 are supported by being coupled to the support plates 143 disposed on both sides. A driving module 144 for rotating the roller is connected to the driving roller 141 , and a pressing module 145 for pressing the roller is connected to the pressing roller 142 . The driving module 144 may be a motor, and the pressing module 145 may be an elastic spring.

In the cable lead-out unit 140 having the above configuration, the charging cable 150 is inserted between the driving roller 141 and the pressure roller 142 , and the charging cable 150 is pressed by the pressure roller 142 . In this state, depending on the rotation direction of the driving roller 141 , it is drawn out to the front of the main body 110 or returned to the rear of the main body 110 .

In this embodiment, although the configuration in which the driving roller 141 and the pressure roller 142 are coupled is exemplified, the pressure roller 142 may be replaced with the driving roller 141, and the charging cable 150 is a pair of driving It is inserted between the rollers to control its forward and backward movement. In addition, as shown, the driving roller 141 may be configured in plurality including a first driving roller 141-1 and a second driving roller 141-2 that are arranged in parallel.

In addition, the cable lead-out unit 140 may further include a pair of vertical guide pins 146 and a pair of horizontal guide pins 147 for guiding the movement of the charging cable 150 . A pair of vertical guide pins 146 and a pair of horizontal guide pins 147 are attached to a support plate ( 143).

A pair of vertical guide pins 146 are coupled to the support plate 143 from the left and right sides of the charging cable 150 in the vertical direction, and the charging cable 150 drawn out or returning between the vertical guide pins 146 is in the left and right direction. to prevent it from moving or deviated from its original position. In addition, a pair of horizontal guide pins 147 are coupled to the support plate 143 from the upper and lower sides of the charging cable 150 in the horizontal direction, and the charging cable 150 is drawn out or returned between the horizontal guide pins 147 . This prevents it from flowing in the vertical direction or deviated from its original position.

The charging cable 150 having a predetermined diameter is finely twisted or twisted while repeatedly withdrawing and returning, and according to such twisting and twisting, it tends to deviate from the original position between the driving roller 141 and the pressure roller 142 . As shown, the vertical guide pin 146 and the horizontal guide pin 147 block the detachment characteristics of the charging cable 150 . Accordingly, the charging cable 150 is inserted between the driving roller 141 and the pressure roller 142 after being guided in place by the vertical guide pin 146 and the horizontal guide pin 147, and the driving roller 141 and Since discharge from the pressure roller 142 and the vertical guide pin 146 and the horizontal guide pin 147 are guided to the correct positions, stable withdrawal and return are made at the correct position between the driving roller 141 and the pressure roller 142 . .

In addition, the cable lead-out unit 140 may further include a sensor module 148 for detecting a length to which the charging cable 150 is drawn out or returned. The cable lead-out unit 140 limits the length at which the charging cable 150 is drawn out or returned according to the signal detected by the sensor module 148 , thereby drawing out or returning the charging cable 150 so as not to touch the ground.

The sensor module 148 may be coupled to a specific position of the support plate 143 , and transmits the sensed signal to the driving module 144 by sensing the length at which the charging cable 150 is drawn out or returned, and the driving module Reference numeral 144 stops the driving of the driving roller 141 according to the transmitted detection signal.

The sensor module 148 may be composed of various types of sensors for detecting the movement of the charging cable 150, for example, may be composed of a limit switch or a color sensing sensor. To this end, a detection unit 148-1 such as a locking protrusion or a color area different from that of the charging cable 150 may be formed at a specific position of the charging cable 150 so that the sensor module 148 can detect it. . When the sensor module 148 is configured as a color detection sensor, the charging cable 150 does not have a protruding region, so the movement of the charging cable 150 is not hindered, and the sensor module can be implemented at a low cost.

In addition, referring to FIG. 6 , the fast charger 100 is a control module for controlling the driving of the driving module 144 of the cable lead-out unit 140 , that is, the rotation of the driving roller 141 , the charging cable 150 . It includes a sensor unit 160 for detecting whether or not to use and a control unit 170 for controlling driving of the driving module according to a signal detected by the sensor unit 160 .

The sensor unit 160 detects the connection state of the first sensor 161 for detecting the connection state between the connector 151 and the connector holder 130 , and the connection state of the connector 151 and the connection inlet 210 of the electric vehicle 200 . A second sensor 162 for detecting and a third sensor 163 for detecting whether the charging cable 150 is abnormally drawn out and a timer 164 may be included.

The first sensor 161 may be provided between the connector 151 and the connector holder 130 , whether the connector 151 is separated from the connector holder 130 , and whether the connector 151 is separated from the connector holder 130 . ) to detect whether it is mounted on the When the user wants to use the charging cable 150, the connector 151 is separated from the connector holder 130, so the first sensor 161 detects this, and the control unit 170 drives the driving roller 141 to The charging cable 150 is drawn out.

In addition, the second sensor 162 may be provided between the connector 151 and the connection inlet 210 , whether the connector 151 is connected to the connection inlet 210 , and whether the connector 151 is connected to the connection inlet 210 . to detect whether it is separated from When the user wants to start charging the electric vehicle, since the connector 151 is connected to the connection inlet 210, the second sensor 162 detects this, and the control unit 170 no longer needs to draw out the charging cable 150. Since there is no, the drive roller 141 is stopped to stop taking out the charging cable 150 .

In addition, since the user disconnects the connector 151 from the connection inlet 210 when the electric vehicle charging is complete, the second sensor 162 detects this, and the charging cable 150 must return to its original position, so the control unit ( 170 drives the driving roller 141 to return the charging cable 150 .

The third sensor 163 may be provided in the cable lead-out unit 140 or the charging cable 150 and detects that the charging cable 150 is abnormally drawn out by an excessively strong force. When a strong force is applied to the charging cable 150 by an external force, etc., the third sensor 163 detects it, and the control unit 170 stops the driving roller 141 to stop drawing out the charging cable 150 .

In addition, the charging cable 150 may be configured to be drawn out or returned only for a predetermined period of time. That is, the timer 164 detects the withdrawal or return start time of the charging cable 150 and the control unit 170 stops the driving roller 141 so that the withdrawal or return of the charging cable 150 is stopped when a predetermined time elapses. make it

The quick charger 100 of the above configuration prevents contamination or damage by organizing or charging the charging cable 150 in a state that does not touch the floor, and by automatically withdrawing and returning a thick and heavy charging cable, the user's Convenience can be greatly improved.

As described above, although exemplary embodiments of the present invention have been illustrated and described, various modifications and other embodiments may be made by those skilled in the art. All such modifications and other embodiments are intended to be contemplated and included in the appended claims without departing from the true spirit and scope of the present invention.

100: quick charger
110: body 111: cable connector
120: user control panel
130: connector holder
140: cable lead-out 141: driving roller
142: pressure roller 144: drive module
145: pressure module 146: vertical guide pin
147: horizontal guide pin 148: sensor module
150: charging cable 151: connector
160: sensor unit
170: control unit

Claims (5)

a charger body having a connector holder on one side and having a cable connector formed at a predetermined height;
a cable lead-out unit having a plurality of rotating rollers and coupled to be fixed to a predetermined height of the charger body;
a charging cable having a front end provided with a connector connected to a connection inlet of an electric vehicle, a rear end fixedly coupled to the cable connector, and a middle portion coupled to the cable lead-out portion to be inserted between the rotating rollers; and
A control unit for controlling the driving of the cable lead-out unit according to a charging request or charging termination;
The cable lead-out portion is provided with a guide pin disposed in front or behind the rotating roller to guide the charging cable to pass between the rotating rollers at the correct position,
The guide pin is located on the left and right sides of the charging cable to prevent the left and right direction deviation of the charging cable, and a pair of vertical guide pins, and located at the upper and lower sides of the charging cable to prevent vertical deviation of the charging cable Includes a pair of horizontal guide pins,
The electric vehicle quick charger, which is configured to take out or return the charging cable at all times by driving the rotating roller. The method of claim 1, wherein the cable lead-out portion,
Further comprising a sensor module for detecting a length at which the charging cable is drawn out or returned, the electric vehicle rapid charger configured to withdraw or return the charging cable only within a range of a predetermined length. According to claim 2, wherein the sensor module,
A color sensing sensor coupled to the cable lead-out part, and a color area part formed on a surface of the charging cable, the electric vehicle quick charger. delete The method of claim 1,
A first sensor for detecting a coupling between the connector of the charging cable and a connector holder of the charger body, and a second sensor for detecting a coupling between the connector of the charging cable and a connection inlet of the electric vehicle; It further includes; a sensor unit for detecting a charging request or charging termination using a cable;
The control unit controls the driving of the cable lead-out unit according to the sensing signal of the sensor unit, the electric vehicle rapid charger.

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