WO2017221207A1 - Système de charge suspendu avec unité de gestion de câble - Google Patents

Système de charge suspendu avec unité de gestion de câble Download PDF

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Publication number
WO2017221207A1
WO2017221207A1 PCT/IB2017/053759 IB2017053759W WO2017221207A1 WO 2017221207 A1 WO2017221207 A1 WO 2017221207A1 IB 2017053759 W IB2017053759 W IB 2017053759W WO 2017221207 A1 WO2017221207 A1 WO 2017221207A1
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WO
WIPO (PCT)
Prior art keywords
cable
charging
electric vehicle
management unit
charging cable
Prior art date
Application number
PCT/IB2017/053759
Other languages
English (en)
Inventor
Wah Cheung LAU
Original Assignee
Lau Wah Cheung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lau Wah Cheung filed Critical Lau Wah Cheung
Priority to CN201780049918.7A priority Critical patent/CN109565169B/zh
Publication of WO2017221207A1 publication Critical patent/WO2017221207A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
    • H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B60L53/18—Cables specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/68—Off-site monitoring or control, e.g. remote control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
    • H02G11/003—Arrangements of electric cables or lines between relatively-movable parts using gravity-loaded or spring-loaded loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging

Definitions

  • the present invention relates to an overhead charging system with a cable management unit for providing self-served service on charging electric vehicles.
  • the present invention provides an overhead charging system with cable management unit which includes a cable feeding/retracting means that effectively retracts and stores a charging cable once the same is not in use.
  • the system generally includes a control module, a charging cable connecting to a charging device which outputs an electric current for charging purpose, an electric-powered cable feeding/retr acting mechanism, an electric powered cable tensioning mechanism, a number of sensors, a wireless transceiver (i.e., Wi-Fi or Bluetooth., etc.) and means for alerting the user via visual or audio means.
  • the overhead charging system for implementing on a ceiling of a parking lot according to the present invention is advantageous over the conventional charging systems which can only be installed on columns or wall mounted.
  • the present invention is able to provide each parking spot its own and dedicated charging system for recharging electric vehicle thereon and allows electric vehicle drivers to recharge their cars safely and efficiently.
  • the present invention may also be able to provide a framework for facilitating the installations of overhead charging system in a large scale.
  • the present invention includes a cable management unit in association with the overhead charging system.
  • the charging cable is substantially enclosed in the cable management unit and is protected against tampering or vandalism.
  • the charging connector can also be enclosed in the unit, ensuring that the whole charging cable inaccessible when the same is not in use.
  • the unit automatically feeds out the charging cable and allows a certain degree of tension to be exerted on the charging cable when charging is in progress.
  • the cable management unit adaptably allows the user to pull on the cable within an allowable preset limit. Once the charging process is completed, the cable will be automatically retracted into the unit as soon as the user unplugged the charging connector from his vehicle or according to instructions given by the overhead charging system. In an event that the charging connector accidently disconnects from the vehicle, the overhead charging system stops the charging process by terminating the supply of electrical current to the charging cable.
  • the overhead electric vehicle charging system essentially includes:
  • a charging unit for supplying a charging current for charging an electric vehicle; a charging cable electrically connected to the charging unit;
  • a charging connector provided at an end of the charging cable and is adapted to plug into a charging port of the electric vehicle
  • a cable management unit comprising:
  • a cable feeding/retracting mechanism controlled by the control module for feeding and retracting the charging cable automatically
  • a cable tensioning mechanism controlled by the control module; and a sensing means associates with the control module for determining a feed length of the charging cable,
  • the cable feeding/retracting mechanism allows the charging cable to be drawn from the cable management unit manually, and
  • the cable tensioning mechanism adaptably generates and applies a resistance to counteract further drawing of the charging cable.
  • the sensing means determines if the feed length reaches a second pre-determined value
  • the cable tensioning mechanism adaptably increases the resistance to counteract further drawing of the charging cable
  • the sensing means determines if the feed length reaches a third pre- determined value, the cable tensioning mechanism increases the resistance further so as to lock the charging cable in position.
  • the cable management unit further includes a sensor for detecting a tension value being exerted on the charging cable, wherein the cable management unit varies the resistance to the drawing of the charging cable as a function of the tension value.
  • the charging cable is locked in position by the cable tensioning mechanism during charging is in progress.
  • the cable management unit electrically disconnects the charging cable from the charging unit and if the charging connector is unplugged from the charging port of the electric vehicle, and automatically retracts the charging cable to a standby position.
  • the cable management unit repeats retracting of the charging cable for a pre-set number of times if movement of the charging cable is obstructed.
  • the system further includes a sensing means for detecting presence of an electric vehicle.
  • the cable management unit automatically feeds out the charging cable by a fixed length such that the charging connector is suspended by the charging cable above ground by a distance.
  • the systems detects the absence of vehicle at the associated parking spot, the cable management unit automatically retracts the charging cable to a standby position. Further, the cable management unit automatically retracts the charging cable if the system is idled for a predetermined period of time.
  • the system further includes an alarming means for generating an indicative alarm when the feed length reaches the pre-determined values, in which the indicative alarm takes form of light or sound.
  • Fig. 1 is a schematic showing the overhead charging system with cable management unit according to the present invention
  • Fig. la is a schematic showing the components in the cable management unit according to the present invention
  • Fig. 2a shows a front perspective view of the cable management unit according to a first exemplary embodiment of the present invention
  • Fig. 2b shows a side perspective view of the cable management unit of Fig. 2a in a free extending state
  • Fig. 2c shows a side perspective view of the cable management unit of Fig. 2a in a lock-up state
  • Fig. 2d shows a front perspective view of the cable management unit of Fig. 2a with cable guiding mechanism
  • Fig. 3 shows a perspective view of the cable management unit according to a second exemplary embodiment of the present invention
  • Fig. 4 shows a closed-up perspective view of the cable management unit of Fig.
  • Fig. 5 shows a closed-up side perspective view of the cable management unit of Fig. 3 and the cable tensioning mechanism
  • Fig. 6 shows a flow diagram illustrating the logical sequence of the different states that the system operates according to the present invention.
  • the present invention provides a type of overhead charging system with cable management unit which can be installed on the ceiling of a parking lot.
  • the present invention includes a number of features which are essential to the operation of the system and the same will be discussed in details in the following sections.
  • an overhead charging system 1 generally includes a cable management unit 10 or 20, a charging device 2 and a charging cable 3 for supplying an electricity current from the charging device 2 to an electric vehicle 5.
  • a charging connector 4 is provided for engagement with a charging socket of the electric vehicle 5.
  • the cable management unit 10 generally includes a main body structure 100, a control module 101, a cable feeding/retracting mechanism 110, a cable tensioning mechanism 120.
  • the unit 10 may further include a wireless communication module 130 and alarming/alerting means 140.
  • the cable feeding/retracting mechanism 1 10 includes driving means 111, i.e., a drive motor, which drives the rotation of a cable reel 112 for the extension and retraction of the charging cable 3.
  • driving means 111 i.e., a drive motor
  • At least one sensors 102 is configured in the cable management unit 10 for measuring a length of the charging cable 3 being extended, allowing the control module 101 to control the cable feeding/retracting mechanism 110 to extend or retract the charging cable 3 and the cable tensioning mechanism 120 to apply various degrees of resistance force to the charging cable 3 according to predetermined conditions.
  • the control module 101 may also activate the alarm or indicator means 140 under according to the said pre-determined conditions.
  • the senor 102 may be a type of optic sensor for reading indications provided on the charging cable 3 at predetermined locations or intervals, or may be a type of angular displacement sensor which measures the amount of angular movement of the cable reel 112.
  • the cable management unit 10 operates in a similar manner as that of an electric cable winch which stores a cable by winding the cable around a reel.
  • the cable feeding/retr acting mechanism 110 retracts or feeds out the charging cable 3 according to instructions received from the control module 101.
  • the cable feeding/retracting mechanism 110 further includes a series of gears 113 configured to transmit rotational motion from the driving means 111 to the cable reel 112 while the movements are controlled and regulated by the control module 101.
  • other driving means i.e., belts and pulleys may be used to achieve the same technical purpose.
  • a substantial length of the charging cable 3 is stored as windings on the cable reel 112.
  • the extending and retracting of the charging cable 3 are achieved by driving the cable reel 1 12 in the respective directions in a manner resembles the action of a cable winch.
  • an end (or a small length, S) of the charging cable 3 may be suspended off from the cable reel 112 as shown in figure 2a.
  • a charging connector 4 is provided at said end for connecting to an electric vehicle 5 while another end of the charging cable 3 connects to the cable reel 1 12.
  • the electrical connection between the charging cable 3 on the cable reel 1 12 and the source of electric power, i.e., the charging device 2 must be able to adapt to the angular motion of the cable reel 1 12 with respect to the unit 10.
  • a coupling device 121 is provided which allows connection and disconnection of electrical power between the cable 3 and the power source.
  • the coupling device 121 is configured to allow the cable reel 112 to rotate freely when disengaged while being able to provide an effective electrical connection between the charging cable 3 and the charging device 2 when it is engaged.
  • Such arrangement effectively avoids undesired twisting of cabling caused by the winding or unwinding motion of the cable reel 1 12.
  • the charging cable 3 is provided with a terminal end which is mechanically and electronically attached to the cable reel 112.
  • the cable reel 112 may take the form of a cylindrical-shaped barrel as shown in figures 2a-2d and is rotatably supported on the main body structure 100 by ball bearings to ensure smooth rotation under load.
  • a cable guide is provided on each axial end of the cable reel 1 12 and functions as a blockage for preventing the windings of the charging cable 3 from going beyond the axial ends of the cable reel 1 12.
  • a rotor 121 extends axially from the cable reel 112.
  • On the circumferential surface of the rotor 121 there are provided, for example, a plurality of annular grooves 121a where at least one conductive element 122 is provided in each of the grooves 121a.
  • the groves 121a may be spaced apart along the axial direction of the rotor 121.
  • the conductive elements 122 are electrically connected to the respective cores of the charging cable 3 via suitable conductive structures arranged inside the cable reel 112.
  • a power supplying clamp 123 having two movable C-shaped grippers 123a 123b is so configured to electrically couple or decouple with the rotor 121 as shown in figure 2b and 2c. As shown in figure 2b, the two C-shaped grippers 123a 123b together form a circular opening of size slightly less than the size of the rotor 121.
  • the movements of the C-shaped grippers 122a 122b are driven by motorized means and controlled by the control module 101. When necessary, the control module 101 instructs the drive means 125 to drive the two C-shaped grippers 123a 123b to press against the rotor 121 to allow electrical connection.
  • a plurality of metal conductive protrusions 124 may be provided and configured to allow the protrusions 124 to engage with the grooves 121a on the rotor 121, allowing each protrusion 124 to electrically contact with the conductive element 122 in the respective groove 121a.
  • the protrusions 124 may be in the form of pins, partial annular ridges or the like. The conductive protrusions 124 electrically connects to the charging device 2 for transferring an electrical current to the rotor 121, the cable reel 112 and thus the charging cable 3.
  • the C-shaped grippers 123a 123b do not contact with the rotor 121.
  • the conductive elements 122 on the rotor 121 are electrically disconnected from the conductive protrusions 124 and no electrical power is being transmitted to the cable reel 112 and thus to the charging cable 3 connected thereto.
  • the cable reel 112 can either be driven by the driving means 111 or manually by applying a force on the charging cable 3 by a user.
  • Variable resistance may be generated by the drive means 111 and applied to counteract the rotation of the cable reel 112, resulting in variable resistance being applied on the drawing of the charging cable 3.
  • the conductive protrusions 124 come in contact with the conductive elements 122 on the rotor 121 thus allowing electrical current to be transmitted to the cable reel 112 and then to the charging cable 3 connected thereto.
  • the cable reel 112 is locked in position by a sufficient resistive force generated by the drive means 1 11 so the charging cable 3 cannot be extended or retracted.
  • the above configuration provides added safety and prevents the charging cable 3 from being extended manually while charging is in progress.
  • a cable guiding mechanism 130 may be provided on the cable management unit 10 as shown in figure 2d.
  • the cable guiding mechanism 130 may include a pair of rollers 131 being held by a guide member 134 in such a way that both the rollers 131 engage with the charging cable 3, for instance, as shown in Fig. 2d.
  • the rollers 131 may be arranged tangentially to each other.
  • Each roller 131 may be provided with an annular slot for accommodating at least part of the charging cable 3.
  • the rollers 131 may be supported by bearings which allow the rollers to rotate smoothly.
  • the rollers 131 are suspended by the guide member 134 which is movably held on the cable management unit 10 as shown in figure 2d.
  • a frame 132 extends radially above the cable reel 112 and suspends the entire cable guiding mechanism 130 and a free end of the charging cable 3. Through the cable guiding mechanism 130, the charging cable 3 may be drawn or retracted freely from the cable management unit 10.
  • the guiding mechanism 130 is so configured that the guide member 134 slidably moves in a direction parallel to an axial direction of the cable reel 112 at a synchronized speed with respect to the rotation speed of the cable reel 112.
  • the sliding movement of the guide member 134 may be achieved, for example, by a threaded engagement between a rotating helical shaft 133 and the guide member 134.
  • the helical shaft 133 may be configured to be driven by the series of gears which are mechanically connected to the cable reel 1 12, or by a separated drive means 135.
  • a preset gear ratio may be employed such that the guide member 134 moves at a certain desirable speed along an axial direction of the helical shaft 133.
  • the guiding mechanism 130 may be configured such that the guide member 134 moves in a lateral direction and in synchronized speed with the rotation of the cable reel 112.
  • the use of the guiding mechanism 130 is particular beneficial to the cable management unit 10 during retracting of the charging cable 3, as the guide member 134 moves at a synchronized speed such that each loop of the charging cable 3 may be winded immediately adjacent its preceding loop around the cable reel 112 without overlapping or creating slacks. As the windings of the charging cable 3 are properly maintained on the cable reel 1 12 by the guiding mechanism 130, the chance of cable jamming can be lowered significantly.
  • cable management unit 20 An alternate configuration of cable management unit 20 is shown in figures 3 to 5.
  • the cable management unit 20 serves substantially the same function as the discussed embodiment but employs different arrangements for providing cable storage.
  • the cable management unit 20 does not have a cable reel. In the stand-by state, a substantial length of charging cable 3 is stored linearly in an elongated structure shown in figure 3.
  • the cable management unit 20 generally includes a main body structure 200 and an elongated storage portion 220, as well as a control module 201 for electronically controlling the feeding/retracting of the charging cable 3.
  • Wireless communication module and alarming/alerting means may also be implemented in the unit to serve the same purpose as discussed in the previous embodiment.
  • a cable feeding/retracting mechanism 210 is provided for driving the extension and retraction of the charging cable 3.
  • the cable feeding/retr acting mechanism 210 includes a main pulley 211 for altering the routing direction of the charging cable 3 so that the cable suspends downward from the cable management unit 20.
  • At least one sensors is configured in the cable management unit 20 for detecting the length of the cable 3 being extended, allowing the control module 201 to control the cable feeding/retracting mechanism 210 to extend or retract the charging cable 3.
  • the control module 201 may also activate the alarm or indicator means under predetermined conditions.
  • the sensors may be a type of optic sensor or reader 212 for reading indications provided on the charging cable 3 at predetermined locations or intervals, or may be a type of angular displacement sensor 212 configured to measure the amount of angular movement of the main pulley in the cable management unit 20.
  • an idler roller 213 is provided for supporting a portion of the charging cable 3 and altering the routing direction of the charging cable 3, preferably by 180 degrees, creating a U-turn at a portion of the charging cable 3 as shown in figure 4.
  • the idler pulley 213 is pivo tally mounted on a slidable structure 214 and is free to travel back and forth within the elongated structure 220. Movement of the slidable structure 214 in direction B is achieved via pulling by a draw wire or chain 215 driven by a drive motor 216 such that the idler pulley 213 moves at a synchronized speed as the charging cable 3 being retracted. Such arrangement can effectively avoid unwanted slacks of the charging cable 3 being created in the cable management unit 20.
  • the drive motor 216 provided in the main body structure 200 drives at least one of rollers 221 in a forward direction to feed out the charging cable 3.
  • the feeding of the cable 3 causes the idler pulley 213 to move towards the main body structure 200 as shown in figure 4.
  • the idler pulley 213 moves in a direction (indicated by arrow A in figure 4) towards the main body structure 200 and shortens the routing distance of the charging cable 3 which allows a stored portion of the cable 3 to be utilized.
  • the cable management unit 20 further includes a cable tensioning mechanism 220 as shown in figures 4 and 5.
  • the cable tension mechanism 220 includes a series of tensioning rollers 221 and a movable platform 222 which the tension rollers 221 are rotatably mounted. For instance, a row of three tensioning rollers 221 a are mounted in the main body structure 200, while the other row of three 221b are mounted on the movable platform 222 as shown in figure 5.
  • the tensioning rollers 221 are configured in a manner such that the charging cable is routed between these two rows of rollers 221a, 221b.
  • the movable platform 222 may be displaced between a released position and a locked position. In the released position, the platform 222 is lowered which allows the charging cable 3 to travel freely above the row of tensioning rollers 221b.
  • the movement of the movable platform 222 is restricted in the up and down direction and the same may be driven by motorized means in any suitable form.
  • the movable platform 222 is driven upward such that the two rows of tensioning rollers 221a, 221b are pressed toward each other to create variable friction between the rollers and the charging cable 3, and may ultimately seize the movement of the charging cable 3 if a sufficiently large friction is achieved.
  • the force of the movable platform 222 may be electronically controlled by the control module 201 in order to produce varying amount of resistance to be felt by the user when the charging cable 3 is being extended manually.
  • the cable management unit 10, 20 is in stand-by mode.
  • the user may activate the overhead charging system 1 via an onsite control terminal 6 (i.e., a point of sale system) connected to the overhead charging system 1.
  • the onsite control terminal 6 guides the user through the required procedures to initiate charging of the electric vehicle 5 being parked in a designated parking space.
  • the onsite control terminal 6 may include a touch-screen display for providing information as well as collecting input from the user.
  • the onsite control terminal 6 may also be implemented with wireless communication means, for example, a RFID reader, a Bluetooth or Wi-Fi module allowing a mobile device 7 to be wirelessly connected with the terminal 6.
  • the system 1 Upon activation of the overhead charging system 1 , the system 1 initiates the cable management unit 10, 20 and automatically extends the charging cable so that the charging connector 4 is lowered to a reachable height for ease of access by the user. The system 1 is now in auto-extending stage 501.
  • the extension of the charging cable 3 lowers the charging connector 4 to a suitable preset height above the ground, for example, 1.5 meter. This is achieved by extending the charging cable 3 by a preset distance from a standby position.
  • the cable feeding/retracting mechanism 1 10, 210 stops the extension of the charging cable 3 and the system 1 ends the auto-extending stage 501.
  • the system 1 automatically retracts the charging cable to its standby position if the systems is idled for a given period of time.
  • the overhead charging system 1 enters the free- extending stage 502.
  • the cable tensioning mechanism 120, 220 does not apply resistance or tension on the charging cable 3, allowing the charging cable 3 to be extended freely by the user with minimal or no resistance.
  • the user may require to further extend the charging cable 3 to a desired length so that the charging cable 3 is sufficient long for the charging connector 4 to reach the charging socket of the electric vehicle 5.
  • the extension of the charging cable 3 can be achieved by pulling the charging cable 3 further out from the cable management unit 10, 20 manually as mechanical resistance is minimal at this stage. Once a sufficient length of cable 3 has been extended, the user will be able to insert the charging connector 4 into the charging socket with ease. After the charging connector 4 is inserted into the charging socket of the vehicle
  • charging process may begin anytime according to the user's command via the onsite control terminal 6 or via the connected mobile device 7.
  • the charging device 2 supplies the required electricity current to the electric vehicle 5 according to preset charging algorithms selected for different types of electric vehicle.
  • the system proceeds to a lock-up stage 504 where the charging cable is locked in the current position.
  • the lockup stage will be discussed in a later section in the below.
  • the overhead charging system 1 may be provided with indication means for alerting the user about the progress of charging. Prior to completion of charging, the user may be notified by way of, for example, alarm sound or lighting. Further, notifications may be displayed to remind the user about the estimated completion time, stage of charging etc., via the display of the onsite control terminal 6 or the connected mobile device 7. Upon the charging process is completed, the user will be informed by the onsite terminal 6 or via his mobile device 7 connected thereto. At the same time, the charging process is terminated. Accordingly, the user unplugs the charging connector 4 from his electric vehicle 5 would trigger the system 1 to log the time of the disconnection.
  • the cable management unit 10, 20 automatically retracts the charging cable 3 to a stand-by or default position.
  • the cable retracting process may be progressed with emission of alarm sound or light, or both. The charging process is therefore completed and the system 1 will enter stand-by mode. The user may now safely remove his vehicle from the parking spot.
  • the user may require to drive off his vehicle before the charging process completes.
  • the user may terminate the charging process via the onsite control terminal 6 or the connected mobile device 7.
  • the system 1 automatically retracts the charging cable 3 after a given period of time. Again, the cable retracting process may be progressed with emissions of alarm sound or light.
  • the length of the charging cable 3 available to be extended from the cable management unit 10, 20 is more than sufficient for the charging connector 4 to reach the charging socket of the electric vehicle 5 being parked at the respective designated parking spot, taking into account the orientations of the vehicle 5 being parked on the spot.
  • the system While still in the free-extending stage 502, if the user manually extends the charging cable 3 and causes the extended length of the charging cable 3 to reach a first pre- determined extended length, the system enters pre-tensioning stage 503.
  • the pulling force applied by the user to the charging cable 3 may be detected by the sensors and triggers the cable management system 10, 20 to generate a first resistance on the charging cable 3.
  • the cable management unit 10, 20 may apply a resistance to the movement of the charging cable 3 to counteract the pulling force applied by the user.
  • further extending (by pulling) the charging cable 3 becomes much more difficult while movement is still allowable if the user insists on pulling with an increased force.
  • the above arrangement is designed to give warning to the user to prevent him/her from extending the charging cable 3 beyond a certain limit and hence damages the system 1.
  • the system 1 enters the locked-up stage 504 where the charging cable 3 is locked in position by the cable managing unit 10 20.
  • the system may alert the user that the extension of the charging cable 3 has reached its limit, for example, by emitting a high-frequency audio alert or flashing an indication light.
  • the charging cable 3 is locked by the cable management unit 10, 20, by exerting a higher amount of resistance (i.e., a second resistance) by the cable tensioning mechanism 120, 220.
  • the second resistance as generated would be sufficient to prevent the user from extending the charging cable further which may cause damage to the charging cable 3 and/or other components in the system 1.
  • the system 1 automatically proceed to the lock-up stage 504.
  • the system 1 During the locked-up Stage 504, if the user attempts to extend the charging cable even further by pulling, the system 1 enters a termination stage 505 and disconnects the electrical supply to the charging cable 3. This immediately terminates the charging process if charging has been initiated.
  • the user may be required to unplug the charging connector 4 from the electric vehicle 5 and re-initialize the charging process via the onsite control terminal 6 or the connected mobile device 7.
  • the overhead charging system 1 of the present invention is also designed to handle various undesired events which may arise during operation.
  • the cable management unit 10, 20 as discussed allows the user to operate the overhead charging system 1 in a convenient and safe manner.
  • the system 1 may instruct the charging device 2 to disconnect electric power and stop the charging process.
  • the charging cable 3 is secured and locked in position (i.e., lock-up stage 504). If the sensor in the system 1 detects an external pulling force being applied on the charging cable 3 and if the force exceeds a pre-set threshold, as a fail-safe function the system 1 disconnects the power supply to the electric vehicle 5 and terminates the charging process (i.e., termination stage 505).
  • the cable management unit 10, 20 automatically retracts the charging cable 3 after a given period of idle time.
  • the system 1 automatically may repeat the retracting process for a pre-set number of times and emit a visual or audio alert.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Selon l'invention, un système de charge de véhicule électrique suspendu (1) comprend une unité de charge (2) permettant de charger un véhicule électrique (5), un câble de charge (3) connecté électriquement à l'unité de charge (2), un connecteur de charge (4) disposé à une extrémité du câble (3) et conçu pour se brancher sur un port de charge du véhicule électrique (5) et une unité de gestion de câble (10). L'unité (10) comprend un module de commande (101), un mécanisme d'alimentation/rétraction de câble (110) commandé par le module de commande (101), un mécanisme de tension de câble (120) commandé par le module de commande (101) et au moins un moyen de détection (102) associé au module de commande (101). Le mécanisme d'alimentation/rétraction de câble (110) permet au câble (3) d'être tiré manuellement, alors que le moyen de détection (102) détermine si la longueur d'alimentation dépasse une valeur prédéterminée, le mécanisme de tension de câble (120) produit et applique de manière adaptative une résistance pour contrecarrer la traction supplémentaire du câble (3).
PCT/IB2017/053759 2016-06-24 2017-06-23 Système de charge suspendu avec unité de gestion de câble WO2017221207A1 (fr)

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US201662354171P 2016-06-24 2016-06-24
US62/354,171 2016-06-24
US201662420890P 2016-11-11 2016-11-11
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CN116863743A (zh) * 2023-05-31 2023-10-10 深圳市皇驰新能源技术有限公司 一种新能源汽车充电桩车位管理系统

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