WO2020004798A1 - Système de charge et dispositif d'interface - Google Patents

Système de charge et dispositif d'interface Download PDF

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Publication number
WO2020004798A1
WO2020004798A1 PCT/KR2019/004874 KR2019004874W WO2020004798A1 WO 2020004798 A1 WO2020004798 A1 WO 2020004798A1 KR 2019004874 W KR2019004874 W KR 2019004874W WO 2020004798 A1 WO2020004798 A1 WO 2020004798A1
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Prior art keywords
resistor
charging
pin
switch
voltage
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PCT/KR2019/004874
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English (en)
Korean (ko)
Inventor
김용은
손영욱
박현배
전재석
이재석
Original Assignee
자동차부품연구원
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Publication of WO2020004798A1 publication Critical patent/WO2020004798A1/fr

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    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • 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
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/24—Personal mobility vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—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
    • 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
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a charging system and an interface device, and more particularly, to a charging system and an interface device for charging an electric drive device.
  • an electric vehicle includes a battery charged with electric power for driving a three-phase motor, a three-phase motor driven with electric power charged in the battery to drive the electric vehicle, an inverter for driving a three-phase motor, and the like. Doing. At this time, when the power remaining in the battery falls below a predetermined amount, it is necessary to charge the battery since the three-phase motor can no longer be driven. To this end, the electric vehicle is charged through a charging infrastructure that rectifies a commercial 220V AC voltage from a power grid and charges a battery, and has a 5-pin connector or a 7-pin connector as shown in FIG. 1 as a charging method through the charging infrastructure. The method of charging an electric vehicle through a slow charger is widely applied.
  • the voltage on the control pilot (CP) pin When charging an electric vehicle through a charging infrastructure, the voltage on the control pilot (CP) pin must be reduced to 6 V in accordance with J1772 international standards. To do this, the voltage on the CP pin must be reduced when designing the on-board charger (OCC). Since a microcontroller unit (MCU) that drops down to 6V is indispensable, there is a problem of increased volume and cost according to the MCU application.
  • MCU microcontroller unit
  • the electric vehicle may be charged using a slow charger having a 5-pin connector or a 7-pin connector, while the ultra-small electric drive device which is charged through a charging plug such as an electric scooter or an electric bicycle may have the charging infrastructure described above.
  • a charging plug such as an electric scooter or an electric bicycle
  • the present invention was devised to solve the above problems, and an object according to an aspect of the present invention is to implement a charging sequence without the application of an MCU, which was required to drop the voltage of the CP pin to 6V according to the J1772 international standard.
  • an MCU which was required to drop the voltage of the CP pin to 6V according to the J1772 international standard.
  • Still another object of the present invention is to provide a charging system and an interface device capable of charging a micro electric drive device such as an electric scooter or an electric bicycle by utilizing an existing charging infrastructure.
  • a charging system includes a first pin connected to a reference resistor to form a first output voltage in an initial state separated from an external device, and defined according to a voltage change formed on the first pin.
  • a charging unit configured to control supply of charging power based on a charging sequence, the charging unit operative to supply the charging power when a third output voltage is formed at the first pin, and a link node connected to the first pin, By lowering the voltage of the link node from the first output voltage to the third output voltage through one or more resistors and one or more switches branched from the link node while the first pin and the link node are connected, And an interface circuit unit for interfacing the charging power from the charging unit to the electric drive device.
  • the interface circuit unit is connected to the first branch node branched from the link node, and the first output voltage through the voltage distribution with the reference resistor in accordance with the connection of the first pin and the link node.
  • a first resistor for dropping to form a second output voltage at the link node a first switch for exciting the current flowing through the first resistor to ground, a second branch connected to a second branch node branching from the link node A node connected to a resistor, a third branch node branched from the link node, a third resistor for dropping the second output voltage to form the third output voltage at the link node, and a node connected to the second resistor.
  • a second switch for turning on and off the voltage supplied from the second resistor to excite the current flowing to the third resistor to ground. And a gong.
  • the first and second switches are NPN Bipolar Junction Transistors (BJTs), and the first resistor is connected between the first branch node and a base terminal of the first switch.
  • a resistor is connected between the second branch node and the collector terminal of the first switch, the third resistor is connected between the third branch node and the collector terminal of the second switch, and the first switch
  • the collector terminal and the base terminal of the second switch are commonly connected, and each emitter terminal of the first and second switches is connected to the ground.
  • the charging unit the second pin connected to the base terminal of the first switch, the fourth and fifth resistors connected in series between the second pin and the ground, and is opened and closed according to the user's operation, and closed And a charge control switch for shorting both terminals of the fifth resistor in an open state and electrically connecting the fifth resistor to the fourth resistor in an open state.
  • the interface circuit unit increases the voltage applied to the base terminal of the first switch, the first switch is turned on, and the first switch As the switch is turned on, the voltage applied to the base terminal of the second switch drops so that the second switch is turned off, thereby floating the third resistor, and as the third resistor is floated, the link node.
  • the second output voltage is formed at the to characterized in that the operation to stop the supply of charging power from the charging unit.
  • An interface device includes a link node connected to a CP pin of a charging unit, and the one or more resistors and one or more switches branched from the link node while the CP pin and the link node are connected to each other.
  • An interface circuit unit for interfacing the charging power from the charging unit to an electric driving device by sequentially dropping the voltage of the link node through the charging node, wherein the charging unit is a control pilot (CP) pin to which a reference resistor is connected by applying a J1772 standard protocol.
  • CP control pilot
  • the interface circuit portion is connected to the first branch node branched from the link node, and 12V initially formed on the CP pin through voltage distribution with the reference resistor in accordance with the connection of the CP pin and the link node.
  • a third resistor connected to a resistor, a third branch node branched from the link node, a third resistor for dropping the 9V voltage to form a 6V output voltage at the link node, and a voltage supplied from a node connected to the second resistor; And a second switch for on-off operation through the second resistor to excite the current flowing to the third resistor to ground.
  • the present invention is essential to reduce the voltage of the CP pin to 6V by allowing a charging sequence according to the J1772 international standard is implemented through an interface circuit implemented through a predetermined resistance element and a switch element
  • a charging sequence according to the J1772 international standard is implemented through an interface circuit implemented through a predetermined resistance element and a switch element
  • the connector's connector and the electric drive's charging plug are electrically connected to allow the use of existing charging infrastructure to charge micro electric drive devices such as electric scooters or electric bicycles.
  • the ease of charging of the device can be improved.
  • 1 is an exemplary view showing a 5-pin connector and a 7-pin connector applied to a conventional slow charger.
  • FIG. 2 is a block diagram illustrating a charging system according to an embodiment of the present invention.
  • FIG 3 is an exemplary diagram illustrating an output voltage formed at a first pin in a charging system according to an exemplary embodiment of the present invention.
  • FIG. 4 is a circuit diagram illustrating a circuit configuration of a charging system according to an embodiment of the present invention.
  • FIG. 5 is a block diagram illustrating an interface device according to an embodiment of the present invention.
  • FIG. 6 is an exemplary diagram illustrating an example of implementing an interface device according to an embodiment of the present invention.
  • FIG. 2 is a block diagram illustrating a charging system according to an embodiment of the present invention
  • Figure 3 is an exemplary view showing an output voltage formed on the first pin in the charging system according to an embodiment of the present invention.
  • 4 is a circuit diagram illustrating a circuit configuration of a charging system according to an embodiment of the present invention.
  • the charging system 1 may include a charging unit 100 and an interface circuit unit 200.
  • the operation of the charging unit 100 according to the present embodiment will be described as an example of charging the electric vehicle.
  • the charging unit 100 of the present exemplary embodiment may mean a slow or rapid charger provided at a charging station for charging a battery of an electric drive device such as an electric vehicle, and may be connected to the vehicle through a connector including first to fifth pins.
  • the first to fifth pins may be CP pins, PP pins, PE pins, L pins, and N pins, respectively.
  • the charging unit 100 may supply charging AC power (AC 220V) to the on-board charger (OCC) of the vehicle through the fourth and fifth pins, and the third pin may form a ground terminal in a state of being connected to the vehicle. Can be.
  • the first pin is provided to apply a charge control pilot (PWM) voltage signal to the vehicle.
  • PWM charge control pilot
  • 3 shows an example of a charge control pilot (PWM) voltage signal formed on the first pin.
  • the first to third output voltages described below as the output voltage of the first pin mean a charge control pilot (PWM) voltage signal, and for convenience of understanding, the first to third output voltages correspond to respective charge control pilots ( PWM) will be described as a high-level voltage signal of the voltage signal. That is, according to FIG. 3, the first to third output voltages may mean + 12V, + 9V, and + 6V, respectively, according to the international standard J1772.
  • the first output voltage in the initial state in which the reference resistor R_ref and the PWM voltage control transistor TR_PWM are connected to the first pin and separated from an external device is shown. That is, a PWM voltage (feq .: 1 kHz) which sets 0 V and the first output voltage as Low-Level and High-Level, respectively, is formed.
  • a PWM voltage (feq .: 1 kHz) which sets 0 V and the first output voltage as Low-Level and High-Level, respectively, is formed.
  • the first pin is typically connected to a resistor provided on the vehicle side to form a second output voltage in which the first output voltage drops.
  • the OBC of the vehicle senses a second output voltage formed on the first pin using an MCU provided therein, and forms a third output voltage having the second output voltage dropped on the first pin through a predetermined switch control.
  • the charging unit 100 senses a third output voltage formed on the first pin and supplies charging AC power to the OBC of the vehicle through the fourth and fifth pins. Accordingly, the OBC may convert the charging AC power supplied through the fourth and fifth pins into DC power through the power converter to charge the battery of the vehicle.
  • an OBC of a vehicle requires an MCU. Accordingly, a problem of volume and cost increase occurs due to the application of the MCU.
  • the present embodiment provides an interface circuit for removing the application of the MCU. present.
  • this embodiment will be described in detail with reference to FIGS. 2 to 4.
  • the charging unit 100 may include a first pin connected to the reference resistor R_ref to form a first output voltage in an initial state separated from an external device.
  • the charging unit 100 controls the supply of the charging power based on the charging sequence defined according to the voltage change formed on the first pin, and operates to supply the charging power when the third output voltage is formed on the first pin.
  • the first pin means CP pin
  • the first to third output voltages mean 12V, 9V and 6V, respectively
  • the charging sequence is the first to third output voltages on the first pin. This may mean a sequence formed sequentially.
  • the interface circuit 200 includes a link node N_LINK connected to the first pin of the charging unit 100, and is branched from the link node N_LINK while the first pin and the link node N_LINK are connected. By lowering the voltage of the link node N_LINK from the first output voltage to the third output voltage through the above resistance and the at least one switch, the charging power from the charging unit 100 may be interfaced to the electric driving device.
  • the present embodiment forms a third output voltage on the first pin through one or more resistors and one or more switches branched from the link node N_LINK connected to the first pin of the charging unit 100, thereby providing the MCU with the MCU.
  • a configuration in which a charging sequence for supplying charging power from the charging unit 100 is implemented in a circuit is adopted.
  • a circuit configuration of the interface circuit unit 200 will be described in detail with reference to FIG. 4.
  • the interface circuit 200 may include first to third resistors R1, R2, and R3, and first and second switches TR1 and TR2.
  • the first resistor R1 is connected to the first branch node N1 branched from the link node N_LINK, and is divided with the reference resistor R_ref according to the connection of the first pin and the link node N_LINK.
  • the first output voltage may be dropped to form a second output voltage at the link node N_LINK.
  • the first switch TR1 may operate to excite the current flowing to the first resistor R1 to ground.
  • the second resistor R2 is connected to the second branch node N2 branched from the link node N_LINK.
  • the third resistor R3 is connected to the third branch node N3 branched from the link node N_LINK, and the second output voltage can be dropped to form a third output voltage at the link node N_LINK.
  • the second switch TR2 may operate to turn on / off the voltage flowing from the node connected to the second resistor R2 to excite the current flowing to the third resistor R3 to ground.
  • the first and second switches TR1 and TR2 may be implemented as NPN Bipolar Junction Transistors (BJTs). Accordingly, the first resistor R1 is connected between the first branch node N1 and the base terminal of the first switch TR1. The second resistor R2 is connected between the second branch node N2 and the collector terminal of the first switch TR1. The third resistor R3 is connected between the third branch node N3 and the collector terminal of the second switch TR2. The collector terminal of the first switch TR1 and the base terminal of the second switch TR2 are commonly connected, and each emitter terminal of the first and second switches TR1 and TR2 is connected to ground.
  • BJTs NPN Bipolar Junction Transistors
  • a current path is also formed that leads to the first pin, the link node N_LINK, the second resistor R2, the base terminal of the second switch TR2, and the emitter terminal of the second switch TR2.
  • the current flowing to the third resistor R3 that is, the collector current of the second switch TR2
  • ground that is, the third resistor R3 is removed from the floating state.
  • a third output voltage having the second output voltage dropped is formed at the link node N_LINK by the third resistor R3.
  • the charging unit 100 detects the third output voltage (that is, the third output voltage formed on the first pin) formed at the link node N_LINK and supplies charging power through the fourth and fifth pins (
  • the charging unit 100 senses the third output voltage formed on the first pin through the provided control unit (MCU), and closes the relay element which regulates commercial AC power (AC 220V) from the system to close the fourth and fifth parts. Charging power can be supplied through the pin).
  • the normal slow charger is provided with a predetermined charge control switch that can be operated by the user to stop charging in the state of charge for the electric vehicle, therefore, the interface circuit unit 200 of the present embodiment is also compatible with the operation of the charge control switch There is a need to be.
  • the charging unit 100 of the present embodiment may further include a second pin, fourth and fifth resistors R4 and R5 and a charge control switch SW together with the first pin.
  • the second pin may be connected to the base terminal of the first switch TR1 and may be implemented as a PP pin when conforming to the international standard of J1772.
  • the fourth and fifth resistors R4 and R5 are connected in series between the second pin and ground.
  • the charge control switch SW opens and closes according to a user's operation. In the closed state, the terminal of the fifth resistor R5 is shorted, and in the open state, the fifth resistor R5 is electrically connected to the fourth resistor R4. It works to connect.
  • the interface circuit 200 increases the voltage applied to the base terminal of the first switch TR1 so that the first switch TR1 is turned on.
  • the voltage applied to the base terminal of the second switch TR2 drops and the second switch TR2 is turned off, thereby causing the third resistor R3 to float.
  • the third resistor R3 is floated, a second output voltage is formed at the link node N_LINK so that the supply of charging power from the charging unit 100 may be stopped.
  • both terminals of the fifth resistor R5 are short-circuited and only the fourth resistor R4 is connected to the first pin.
  • a low voltage (eg 0.3V) is formed at the base terminal of TR1). Accordingly, the first switch TR1 is in an off state, the second switch TR2 is in an on state, and a third output voltage is formed at the link node N_LINK by the third resistor R3, thereby being charged. The power supply state is maintained.
  • the second pin that is, the base terminal of the first switch TR1
  • the fourth resistor R4 by the fifth resistor R5.
  • High voltages e.g., 0.7V or more
  • the first switch TR1 is turned on
  • the second switch TR2 is turned off
  • the third resistor R3 is floated
  • the link node N_LINK is again turned on.
  • the second output voltage is formed, the supply of charging power from the charging unit 100 is stopped.
  • the charging sequence for supplying the charging power from the charging unit 100 may be implemented in a circuit without maintaining a separate control operation by the MCU and at the same time maintain compatibility with the conventional slow charger.
  • a small electric drive device such as an electric scooter or an electric bicycle cannot be charged by using a slow charger having a 5-pin connector or a 7-pin connector.
  • a connector of the slow charger that is, the charging unit 100
  • the charging plug of the electric drive device By electrically connecting the connector of the slow charger (that is, the charging unit 100) and the charging plug of the electric drive device through the interface circuit 200, a configuration capable of charging the micro electric drive device through the slow charger is provided.
  • FIG. 5 is a block diagram illustrating an interface device according to an embodiment of the present invention
  • FIG. 6 is an exemplary view showing an example of implementing an interface device according to an embodiment of the present invention.
  • the interface device 2 may include an interface circuit unit 200 and a body unit 300.
  • the charging unit 100 and the interface circuit unit 200 are the same as those of the first embodiment, and will be described below as an embodiment to which the J1772 standard protocol is applied.
  • the charging unit 100 may apply the J1772 standard protocol to control the supply of charging power based on a charging sequence according to an output voltage formed at the CP pin to which the reference resistor R_ref is connected.
  • the interface circuit 200 includes a link node N_LINK connected to the CP pin of the charging unit 100, and at least one resistor branched from the link node N_LINK while the CP pin and the link node N_LINK are connected to each other. And by sequentially dropping the voltage of the link node N_LINK through one or more switches, charging power from the charging unit 100 may be interfaced to the electric driving device.
  • the interface circuit 200 is connected to the first branch node N1 branched from the link node N_LINK, as described in the first embodiment, and the reference resistor R_ref according to the connection of the CP pin and the link node N_LINK.
  • the first resistor R1 and the current flowing through the first resistor R1 are grounded to form a 9V voltage at the link node N_LINK by dropping the 12V voltage initially formed at the CP pin through voltage division with the voltage.
  • the second resistor R2 connected to the second branch node N2 branched at the link node N_LINK, and the third branch node N3 branched at the link node N_LINK.
  • a third resistor R3 for dropping the 9V voltage to form a 6V output voltage at the link node N_LINK, and an on-off operation through a voltage supplied from a node connected to the second resistor R2.
  • Second switch TR2 for exciting current flowing through third resistor R3 to ground It can be included.
  • the body part 300 may accommodate a substrate having the interface circuit part 200 mounted therein, and the charging part 100 may be supplied to the electric driving device through the operation of the interface circuit part 200 so that charging power from the charger may be supplied to the electric drive device. ) And the charging plug of the electric drive device can be electrically connected.
  • the body portion 300 is formed of a synthetic resin material, one end of the connector of the charging unit 100 may be coupled, the other end may be coupled to the charging plug of the electric drive device.
  • a conductive material eg, copper
  • a slow charger having a 5-pin connector or a 7-pin connector can be used to charge a micro electric drive device such as an electric scooter or an electric bicycle.
  • the resistance values of the reference resistor R_ref and the first to fifth resistors R1, R2, R3, R4, and R5 described above are designed based on the experimental results of the designer within the range in which the above-described operation can be implemented.
  • R_ref 1 k ⁇
  • R1 3.3 k ⁇
  • R2 100 k ⁇
  • R3 1.3 k ⁇
  • R4 150 ⁇
  • R5 330 ⁇
  • the present embodiment enables the charging sequence according to the J1772 international standard to be implemented through an interface circuit implemented through a predetermined resistance element and a switch element, thereby applying the MCU which was required to drop the voltage of the CP pin to 6V. This eliminates the problem of volume and cost increase due to MCU application.
  • the connector's connector and the electric drive's charging plug are electrically connected to allow the use of existing charging infrastructure to charge micro electric drive devices such as electric scooters or electric bicycles.
  • the ease of charging of the device can be improved.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne un système de charge et un dispositif d'interface, et comprend : une unité de charge, qui comprend une première broche connectée à une résistance de référence de façon à former une première tension de sortie dans un état initial de séparation vis-à-vis d'un dispositif externe, qui commande la délivrance de la puissance de charge sur la base d'une séquence de charge définie en fonction d'un changement de tension formé sur la première broche, et qui est actionnée de façon à délivrer la puissance de charge quand une troisième tension de sortie est formée sur la première broche, et une unité de circuit d'interface, qui comprend un nœud de liaison connecté à la première broche, et qui permet à la tension du nœud de liaison d'être diminuée à partir de la première tension de sortie jusqu'à la troisième tension de sortie par l'intermédiaire d'une ou de plusieurs résistances et d'un ou de plusieurs commutateurs connectés par le fait d'être ramifiés à partir du nœud de connexion dans un état dans lequel la première broche est connectée au nœud de liaison, de façon à permettre ainsi d'établir une interface, à l'aide de la puissance de charge, entre l'unité de charge et un dispositif de commande électrique.
PCT/KR2019/004874 2018-06-27 2019-04-23 Système de charge et dispositif d'interface WO2020004798A1 (fr)

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