CN114211979A - Vehicle-mounted charging system and method capable of being externally arranged - Google Patents

Vehicle-mounted charging system and method capable of being externally arranged Download PDF

Info

Publication number
CN114211979A
CN114211979A CN202111662425.5A CN202111662425A CN114211979A CN 114211979 A CN114211979 A CN 114211979A CN 202111662425 A CN202111662425 A CN 202111662425A CN 114211979 A CN114211979 A CN 114211979A
Authority
CN
China
Prior art keywords
external
voltage
charging
vehicle
charger
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN202111662425.5A
Other languages
Chinese (zh)
Other versions
CN114211979B (en
Inventor
王建波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Peugeot Citroen Automobile Co Ltd
Original Assignee
Dongfeng Peugeot Citroen Automobile Co Ltd
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 Dongfeng Peugeot Citroen Automobile Co Ltd filed Critical Dongfeng Peugeot Citroen Automobile Co Ltd
Priority to CN202111662425.5A priority Critical patent/CN114211979B/en
Publication of CN114211979A publication Critical patent/CN114211979A/en
Application granted granted Critical
Publication of CN114211979B publication Critical patent/CN114211979B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B60L53/20—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 converters located in the vehicle
    • 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
    • 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
    • B60L53/20—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 converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging 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

Landscapes

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

Abstract

The invention discloses an external vehicle-mounted charging system and method, which comprises a high-voltage power distribution device, an in-vehicle charging electric connection assembly, an out-vehicle charging connection assembly, an external low-voltage power supply and a vehicle controller module, wherein the high-voltage power distribution device is connected with the vehicle controller module through a power supply; according to the invention, the vehicle-mounted charger is designed to be externally arranged, so that the effects of reducing the cost of the charger shared by multiple vehicles, reducing the quality of vehicle-mounted parts, facilitating the improvement of endurance and reducing the investment of other charging facilities can be realized; meanwhile, the internal connection system and the external connection system for charging are compatible, so that the internal or external charging machine is convenient to replace and work reliably.

Description

Vehicle-mounted charging system and method capable of being externally arranged
Technical Field
The invention belongs to the technical field of vehicle-mounted charging, and particularly relates to an external vehicle-mounted charging system and method.
Background
Most electric vehicles are usually equipped with two charging systems of direct current fast charging and alternating current slow charging. The direct current quick charging is a mode usually selected by a user under the condition of time shortage when the user uses the vehicle, and the alternating current slow charging is a charging mode usually adopted by the vehicle at leisure, so that the user can conveniently select a charging station for charging or a household power supply for charging, and the user can conveniently use the electric vehicle. When alternating current slow charging is selected, the vehicle obtains electric energy from an external 220V alternating current power supply, and the vehicle-mounted charger is generally responsible for converting alternating current into direct current, matching the voltage and then charging the battery pack. From the point of view of the function of the charger, it is not an essential component for the vehicle to travel, since the conversion of ac to dc and the voltage matching can be done externally.
At present, related documents discuss schemes of canceling a slow charging machine, using direct current fast charging or battery replacement and the like for vehicles. However, facilities of the direct-current quick charging station are high in cost and large in occupied area, high-density popularization is difficult due to the fact that high power and high voltage have large impact on a power grid, power exchange has certain requirements on places and equipment facilities, and popularization cost is high. The 220V power supply is easy to find, very popular and convenient to charge, so that the situation that a slow charging machine is cancelled in consideration of convenience is not practical at present.
The use scene of the vehicle is considered, when the vehicle is driven or the direct-current quick charging is carried out, the chargers are idle parts, if a plurality of vehicles share the charger, the configuration rate of the charger can be reduced, and particularly, the batch purchase problem of similar electric vehicles can be caused when the vehicles in public operation such as driving schools and taxis have operation characteristic investigation of concentrated parking places; meanwhile, the mass of the vehicle-mounted part is reduced, and the improvement of endurance is facilitated.
Disclosure of Invention
The invention provides an externally arranged vehicle-mounted charging system and an externally arranged vehicle-mounted charging method, which realize one of the purposes of the invention.
The high-voltage distribution device is positioned in the vehicle and used for receiving direct-current output high-voltage current of the built-in charger or the external charger and distributing the direct-current output high-voltage current to the battery pack charging loop; when the vehicle charging mode is built-in charging, the high-voltage distribution device is connected with a built-in charger through a charger high-voltage output plug in the vehicle charging electric connection assembly; when the vehicle charging mode is external charging, the high-voltage distribution device is connected with an external slow charging high-voltage lead socket in the vehicle charging electric connection assembly through a charger high-voltage output plug in the vehicle charging electric connection assembly in an inserting mode, and the external slow charging high-voltage lead socket is connected with a high-voltage direct-current output port of an external charger through an external slow charging socket in the vehicle charging electric connection assembly.
Some vehicles are provided with a charger and can be charged through the built-in charger, and the charging mode of the vehicles is built-in charging in the scene; some vehicles are not provided with a charger, and are charged through an external charger, and the charging mode of the vehicles is external charging in the scene.
The vehicle interior charging electric connection assembly is positioned in a vehicle and used for providing high-voltage conduction connection of a charging gun, a built-in charger and a high-voltage power distribution device for a built-in charging system, the charging gun is connected with CC and CP signal lines of the charger, a vehicle control unit, the built-in charger and a CAN network of a battery management unit are connected, a low-voltage power supply of the built-in charger is connected, a control line of a built-in relay 1 is connected, the built-in charger or the external charger is connected with a high-voltage connection detection loop of the high-voltage power distribution device, and the built-in charger is connected with a wake-up line of the vehicle control unit; the system is also used for providing the high-voltage conduction connection vehicle inner part of the external charger and the high-voltage distribution device for the external charging system, the vehicle controller, the external charger and the CAN network connection vehicle inner part of the battery management unit, the vehicle inner part of the external relay 2 control line connection, the vehicle inner part of the external charger and the high-voltage connection detection circuit connection of the high-voltage distribution device, the vehicle inner part of the external charger and the wake-up line connection of the vehicle controller and the vehicle inner part of the external slow-charging plug preset resistance circuit connection detection.
The external charging connection assembly is positioned outside a vehicle and used for providing a charging gun and an external charger for an external charging system, the external part of the external charger is connected with the high-voltage conduction of a high-voltage distribution device, the charging gun is connected with CC and CP signal lines of the charger, the CAN network of the vehicle control unit, the external charger and a battery management unit is connected with the external part of the vehicle, the external part of the external relay 2 is connected with a control line, the external part of the external charger is connected with a high-voltage connection detection circuit of the high-voltage distribution device, the external part of the external charger is connected with an awakening line of the vehicle control unit, and the external slow charging plug is preset with a resistance part connected with a resistance circuit.
The external low-voltage power supply is positioned outside the vehicle and used for providing power for the external charger when the vehicle charging mode is external charging;
the vehicle controller module is positioned in the vehicle and used for confirming that the current charging mode is the built-in charging mode or the external charging mode according to the awakening port and detecting whether the high-voltage loop in the built-in charging mode or the external charging mode is normally connected.
The vehicle interior charging electric connection assembly comprises a built-in relay 1, a switch side power supply side contact of the built-in relay 1 is connected with a vehicle interior low-voltage power supply, a switch side electric appliance side contact is connected with a low-voltage input port of a built-in charger, a control line input contact is connected with a control port of the built-in relay 1 of the vehicle control unit and used for controlling the on-off of a power supply cable of the built-in charger low-voltage power supply; the external charging connection assembly comprises an external relay 2, a switch side power supply side contact of the external relay 2 is connected with an external low-voltage power supply, a switch side electric appliance side contact is connected with a low-voltage input port of an external charger, a control line input contact is connected with a control port of the external relay 2 of the vehicle control unit and is used for controlling the on-off of a low-voltage power supply cable of the external charger; if the vehicle charging mode is built-in charging, the vehicle controller controls the built-in relay 1 to be closed and the external relay 2 to be opened; and if the vehicle charging mode is external charging, the vehicle controller controls the built-in relay 1 to be switched off and the external relay 2 to be switched on.
The slow charging high-voltage input socket of the high-voltage power distribution device is internally provided with a U-shaped coupler, when the vehicle charging mode is in a built-in mode, a high-voltage input port of the slow charging high-voltage input socket is connected with a high-voltage direct-current output port of a built-in charger, and a U2 contact of the U-shaped coupler is connected with a U-shaped coupler U1 contact embedded in a high-voltage direct-current output socket of the built-in charger; the U1 contact of the U-shaped coupler is connected to the 5V port of the vehicle controller.
The high-voltage input socket of the high-voltage power distribution device is internally provided with a U-shaped connector, when the vehicle charging mode is external, a high-voltage input port of the high-voltage power distribution device is connected with a direct-current high-voltage contact of an external slow-charging high-voltage lead socket through a high-voltage output plug of a charger inside the vehicle, a U2 contact of the U-shaped connector is connected with a U2 contact of the external slow-charging high-voltage lead socket through the high-voltage output plug of the charger inside the vehicle, and a U1 contact of the U-shaped connector is connected with a 5V port of a vehicle controller through the high-voltage output plug of the charger inside the vehicle.
The charging electric connection assembly in the vehicle comprises a standard slow charging plug connector, an external slow charging socket and an external slow charging high-voltage lead socket, wherein the standard slow charging plug connector is used for connecting a charging gun and an internal charger; the external slow charging high-voltage lead socket is used for connecting the high-voltage power distribution device and the external slow charging socket when the vehicle charging mode is external charging.
The external slow charging socket comprises low-voltage connecting contacts 1-7 and a direct-current high-voltage contact, and is in plug-in fit with an external slow charging plug in an external charging connection assembly, a contact 1 of the external slow charging socket is connected with a contact 2 of a relay control of a vehicle control unit, a contact 2 of the vehicle control unit is connected with a negative contact of the vehicle control unit, a contact 3 of the external slow charging socket is connected with a positive contact of the vehicle control unit, a contact 4 of the external slow charging socket is connected with a contact 2 of the vehicle control unit, a contact 5 of the external slow charging socket is connected with a CAN communication contact of an internal charger, the vehicle control unit and a battery management unit respectively, a contact 6 of the external slow charging socket is connected with a contact 2 of a high-side input terminal of the vehicle control unit, a contact 7 of the external slow charging high-voltage lead socket is connected with a direct-current high-voltage contact of the external slow charging high-voltage lead socket;
when the vehicle charging mode is external charging, the external slow charging high-voltage lead socket is connected with a high-voltage output plug of a charger arranged in a vehicle in an inserting manner, the high-voltage output plug of the charger is connected with a high-voltage distribution device in the vehicle through a slow charging high-voltage input connector, a direct-current high-voltage contact of the external slow charging high-voltage lead socket is connected with a direct-current high-voltage contact of the high-voltage distribution device through the high-voltage output plug of the charger, a U2 contact of the external slow charging high-voltage lead socket is connected with a U2 contact of the high-voltage distribution device through the high-voltage output plug of the charger, and a vacant needle contact of the external slow charging high-voltage lead socket is connected with a high-side input 1 contact of a vehicle controller through the high-voltage output plug of the charger;
when the vehicle charging mode is built-in charging, the high-side input 1 contact of the vehicle controller is connected with the U2 contact of the high-voltage output socket of the built-in charger.
The external charging connection assembly comprises an external standard slow charging plug connector and an external slow charging plug, the external standard slow charging plug connector is used for connecting a charging gun and an external charger, a high-voltage alternating current contact of the charging gun is connected with a high-voltage alternating current input contact of the external charger, and a CC signal contact and a CP information contact of the charging gun are respectively connected with a CC signal contact and a CP information contact of the external charger; the external slow charging plug comprises low-voltage contacts 1-7 and direct-current high-voltage contacts, the low-voltage contacts and the direct-current high-voltage contacts are inserted into an external slow charging socket of the vehicle internal charging electric connection assembly, one ends of the voltage contacts 1-7 are connected with low-voltage connection contacts 1-7 of the external slow charging socket in a one-to-one correspondence mode, one ends of the direct-current high-voltage contacts are connected with direct-current high-voltage contacts of the external slow charging socket, the other ends of the voltage contacts 1 are connected with a control line input contact of an external relay 2, a resistor R is connected between the other ends of the voltage contacts 2 and a voltage contact 3 in series, the other end of the voltage contact 4 is connected with a wakeup port of the external charger, the other end of the voltage contact 5 is connected with a CAN port of the external charger, the other end of the voltage contact 6 is connected with a U2 contact of a U-shaped coupler in a high-voltage direct-current output socket of the external charger, the other end of the voltage contact 7 is connected with a U1 contact of a U-shaped coupler in a high-voltage direct-current output socket of the external charger, the other end of the direct current high-voltage contact is connected with a direct current high-voltage port in a high-voltage direct current output socket of the external charger.
The external vehicle-mounted charging method for realizing the second purpose of the invention comprises the following steps:
s1, the vehicle control unit wakes up the battery management system after receiving a wake-up signal of the built-in charger or the external charger, and the built-in charger or the external charger, the vehicle control unit and the battery management system establish communication;
s2, the vehicle controller confirms that the current charging mode is built-in charging or external charging according to the awakening port, if the current charging mode is external charging, the vehicle controller controls the built-in relay 1 to be switched off, and the built-in relay 1 is used for controlling power supply to the built-in charger; if the external slow charging plug is internally charged, detecting whether a resistor embedded in the external slow charging plug exists, and controlling the external relay 2 to be disconnected if the resistor exists; the external slow charging plug is used for connecting the vehicle with an external charging device; the external relay 2 is used for controlling power supply to an external charger;
s3, when the CC and CP port signals of the internal charger or the external charger are effective, and the response of the battery management system, the internal charger or the external charger and the vehicle control unit is finished, the high-voltage wire harness is effectively connected and the connection resistance signal is detected normally, the vehicle is allowed to be charged, otherwise, the charging is not allowed;
and S4, if the charging mode is built-in charging, the alternating current high voltage electricity of the charging gun is led into the built-in charger through the alternating current high voltage input cable, and is output to the high voltage distribution device through the direct current high voltage output cable after the alternating current of the built-in charger is converted into the direct current.
If the charging mode is external charging, the high-voltage electricity of the charging gun is led into the external charger through an external alternating-current high-voltage input cable and an alternating-current input plug connector of the external charger, and the external charger converts alternating current into direct current and then outputs the direct current to the high-voltage power distribution device through a direct-current high-voltage output cable, the external charging plug connector, an external slow-charging high-voltage lead socket of the external charger, a high-voltage output plug of the charger, the direct-current high-voltage output cable, a slow-charging high-voltage input plug of the high-voltage power distribution device and the socket of the charger.
S5, when the whole vehicle is controlled to be awakened by the built-in charger through the awakening 1 contact, prompting a built-in charging mode, and when the whole vehicle is awakened by the external charger through the awakening 2 contact, sending information prompting an external charging mode to the instrument; when the vehicle controller is in a built-in charging mode, the vehicle controller sends a cable connection abnormity prompt message to the instrument when detecting 5V voltage through the high-side input 2 contact, and stops charging; when the vehicle controller is in an external charging mode, the vehicle controller sends a prompt message of 'abnormal cable connection' to the instrument when detecting 5V voltage through the high-side input 1 contact, and stops charging; the awakening 1, the awakening 2, the high-side input 1 and the high-side input 2 are respectively 4 contacts of the whole vehicle controller; the wake-up 1 is connected with an internal charger, the wake-up 2 is connected with an external charger, and the high-side input 1 and the high-side input 2 can detect the voltage of a 5V port;
when the vehicle controller is in an external charging mode, the vehicle controller sends a prompt message of 'abnormal cable connection' to the instrument when detecting 5V voltage through the high-side input 1 contact, and stops charging; the resistor embedded in the external slow charging plug is continuously monitored in the external charging process, if the resistance value of the resistor exceeds a threshold value, the vehicle control unit controls the charger to stop charging, and the threshold value can be within a range of plus or minus 10% of the resistance value of the resistor.
Has the advantages that:
according to the invention, the vehicle-mounted charger is designed to be externally arranged, so that the effects of reducing the cost of the charger shared by multiple vehicles, reducing the quality of vehicle-mounted parts, facilitating the improvement of endurance and reducing the investment of other charging facilities can be realized; meanwhile, the internal connection system and the external connection system for charging are compatible, so that the internal or external charging machine is convenient to replace and work reliably.
Drawings
Fig. 1 is a system connection diagram of a charger in the prior art when the charger is built in;
FIG. 2 is a system connection diagram of the charger of the present invention when the charger is built in;
FIG. 3 is a system connection diagram of the external charger of the present invention;
FIG. 4 is a schematic diagram of a charger high-voltage output plug and socket contacts;
FIG. 5 is a schematic diagram of the contacts of a slow charging high voltage input plug and receptacle in a high voltage power distribution unit;
FIG. 6 is a schematic diagram of an external slow charging high voltage lead socket contact;
FIG. 7 is a schematic diagram of the contacts of an external slow-charging plug and socket;
fig. 8 is a contact schematic diagram of the high-voltage direct-current output plug of the external charger.
Detailed Description
The following detailed description is provided for the purpose of explaining the claimed embodiments of the present invention so that those skilled in the art can understand the claims. The scope of the invention is not limited to the following specific implementation configurations. It is intended that the scope of the invention be determined by those skilled in the art from the following detailed description, which includes claims that are directed to this invention.
One embodiment of the system of the present invention is described below in conjunction with FIGS. 1-8.
Fig. 2 and fig. 3 are system connection diagrams of the internal and external chargers according to the present invention, respectively, and the system connection diagrams include a high voltage power distribution device, an in-vehicle charging electrical connection assembly, an out-vehicle charging connection assembly, an external low voltage power source, and a vehicle controller module.
The high-voltage distribution device is positioned in the vehicle, and when the charging mode is built-in charging, the high-voltage distribution device is respectively connected with the built-in charger and the 5V port of the vehicle control unit through the slow charging high-voltage input connector, and is used for receiving the direct-current output high-voltage current of the built-in charger and distributing the direct-current output high-voltage current to the battery pack charging loop; when the vehicle charging mode is built-in charging, the high-voltage distribution device is connected with a built-in charger through a charger high-voltage output plug in the vehicle charging electric connection assembly; when the vehicle charging mode is external charging, the high-voltage distribution device is connected with an external slow charging high-voltage lead socket in the vehicle charging electric connection assembly through a charger high-voltage output plug in the vehicle charging electric connection assembly in an inserting mode, and the external slow charging high-voltage lead socket is connected with a high-voltage direct-current output port of an external charger through an external slow charging socket in the vehicle charging electric connection assembly.
The in-vehicle charging electric connection assembly is positioned in a vehicle and comprises a standard slow charging socket, an in-vehicle alternating current input cable, an in-vehicle alternating current input plug, an in-vehicle CC cable, an in-vehicle CP cable, an internal charger 12V low-voltage power supply cable, an in-vehicle CAN communication cable, an internal charger awakening cable, an internal charger low-voltage wire harness plug, a charger high-voltage output plug, an internal charger direct current output high-voltage cable, a slow charging high-voltage input plug, an internal charger direct current output high-voltage cable connection detection loop A8 section, an internal charger direct current output high-voltage cable connection detection loop A9 section, an internal charger direct current output high-voltage cable connection detection loop A10 section, an internal relay 1 control cable, an external charger 2 in-vehicle section cable, a positive electrode cable, a negative electrode cable, an external charger direct current output high-voltage cable connection detection loop A15 section, a power supply control circuit, The external relay 2 control cable A16 section, the external slow charging socket, the external slow charging high-voltage lead, the external charger direct current output high-voltage cable connection detection loop A17 section and the external slow charging high-voltage lead socket.
The standard slow charging socket comprises a slow charging alternating-current high-voltage input contact, a CC contact and a CP contact, and is in plug-in fit with a standard slow charging plug;
the in-vehicle alternating current input cable is used for connecting the charging gun alternating current high-voltage input contact to the built-in charger alternating current high-voltage input contact;
the alternating current input plug in the vehicle comprises an alternating current high-voltage input contact which is in insertion fit with a high-voltage alternating current input socket of the built-in charger;
the in-vehicle CC cable is used for connecting a CC contact of a standard slow charging socket and a CC contact of a low-voltage wire harness plug of a built-in charger;
the CP cable in the vehicle is used for connecting a CP contact of a standard slow charging socket and a CP contact of a low-voltage wire harness plug of a built-in charger;
the low-voltage power supply cable of the vehicle charging motor is used for connecting a side contact of a switch electrical appliance of the built-in relay 1 and a 12V input contact of a low-voltage wire harness plug of the charger;
the CAN communication cable in the vehicle is used for connecting a CAN communication contact of the built-in charger, the vehicle controller and the battery management unit and a contact 5 of the external slow charging socket;
the in-vehicle charging motor wake-up cable is used for connecting a built-in charger wake-up contact with a wake-up 1 contact of the vehicle controller;
the low-voltage wiring harness plug of the charging motor in the vehicle comprises a connection detection contact, a voltage detection contact, a 12V input contact, a CAN port contact and a wake-up contact, and forms a splicing matching relation with a low-voltage wiring harness socket of the built-in charger;
as shown in fig. 4, the charger high-voltage output plug comprises a contact U1, a contact U2, and a direct-current high-voltage contact, and forms a plug-in fit with a high-voltage direct-current output socket of the built-in charger;
the direct current output high-voltage cable of the vehicle charging motor is used for connecting a built-in charger and a direct current high-voltage contact of a high-voltage distribution device.
As shown in fig. 5, the slow charging high-voltage input plug includes a contact U1, a contact U2, and a dc high-voltage contact, and forms a plug-in fit with the slow charging high-voltage input socket of the high-voltage distribution apparatus;
the charger direct current output high-voltage cable connection detection loop A8 section is used for connecting a charger high-voltage output plug contact U1 and a slow charging high-voltage input plug contact U2;
the charger direct-current output high-voltage cable connection detection circuit A9 section is used for connecting a slow charging high-voltage input plug contact U1 and a vehicle control unit 5V contact;
the charger direct current output high-voltage cable connection detection circuit A10 section is used for connecting a charger high-voltage output plug contact U2 and a vehicle controller high-side input 1 contact;
the built-in relay 1 control cable is used for connecting a relay control 1 contact of the whole vehicle controller and a relay control line input contact;
the charger awakens 2 the cable at the inner section of the vehicle and is used for connecting the vehicle controller awakening 2 contact and the external slow charging socket contact 4;
the positive cable is used for connecting a positive contact of the whole vehicle controller and the external slow charging socket contact 3;
the negative cable is used for connecting a negative contact of the whole vehicle controller and the external slow charging socket contact 2;
a charger direct-current output high-voltage cable connection detection loop A15 section is used for connecting a vehicle controller high-side input 2 contact and an external slow charging socket contact 6;
the external relay 2 control cable A16 section is used for connecting a vehicle control unit relay control 2 contact and an external slow charging socket contact 1;
the external slow charging socket comprises low-voltage connecting contacts 1-7 and a direct-current high-voltage contact, and is in plug-in fit with the external slow charging plug;
the external slow charging high-voltage lead is used for connecting a high-voltage contact of the external slow charging high-voltage lead socket and a high-voltage contact of the external slow charging socket;
the direct-current output high-voltage cable of the charger is connected with a detection loop A17 section and is used for connecting a U2 contact of an external slow charging high-voltage lead socket and a contact 7 of the external slow charging socket;
the external slow charging high-voltage lead socket comprises a U2 contact, a hollow needle contact and a direct-current high-voltage contact, and forms a splicing fit relation with a high-voltage output plug of the charger;
the external charging connection assembly is positioned outside the vehicle and comprises an external standard slow charging socket, an external alternating current input cable, an external alternating current input plug, an external CC cable, an external CP cable, an external charger 12V low-voltage power supply cable, an external CAN communication cable, an external charger awakening cable, an external charger low-voltage wiring harness plug, an external charger high-voltage output plug, an external charger direct current output high-voltage cable, an external high-voltage cable connection detection loop B8, an external high-voltage cable connection detection loop B9, an external relay 2 control cable and an external slow charging plug, wherein the external standard slow charging socket is positioned outside the vehicle;
the standard slow charging socket outside the automobile comprises a slow charging alternating-current high-voltage input contact, a CC contact and a CP contact, and is in plug-in fit with a standard slow charging plug outside the automobile;
the external alternating current input cable is used for connecting the charging gun alternating current high-voltage input contact to the external charger alternating current high-voltage input contact;
the external alternating current input plug comprises an alternating current high-voltage input contact which is in insertion fit with the external charger high-voltage alternating current input socket;
the external CC cable is used for connecting a CC contact of an external standard slow charging socket and a CC contact of an external charger low-voltage wire harness plug;
the external CP cable is used for connecting an external standard slow charging socket CP contact and a CP contact of an external charger low-voltage wire harness plug;
the 12V low-voltage power supply cable of the external charger is used for connecting a side contact of a switch electrical appliance of the external relay 2 and a 12V input contact of a low-voltage wire harness plug of the vehicle charger;
the external CAN communication cable is used for connecting an external charger CAN contact and an external slow charging plug contact 6;
the external charger awakening cable is used for connecting the external charger awakening contact and the external slow charging plug contact 4;
the external charger low-voltage wiring harness plug comprises a CC contact, a CP contact, a 12V input contact, a CAN contact and a wake-up contact; the high-voltage output plug of the external charger comprises a contact U1, a contact U2 and a direct-current high-voltage contact, and is in plug-in fit with the high-voltage direct-current output socket of the external charger;
the external charger direct-current output high-voltage cable is used for connecting the external charger direct-current high-voltage contact and the external slow charging plug direct-current high-voltage contact;
the section B8 of the external high-voltage cable connection detection loop is used for connecting an external charger high-voltage output plug U1 contact and an external slow charging plug contact 7;
the section B9 of the external high-voltage cable connection detection loop is used for connecting an external charger high-voltage output plug U2 contact and an external slow charging plug contact 6;
as shown in fig. 3, the external relay 2 control cable is used for connecting the control contact of the external relay 2 and the contact 1 of the external slow charging plug;
the external slow charging plug comprises voltage contacts 1-7, a direct-current high-voltage contact and a 400 ohm resistor which is connected in series between the contact 2 and the contact 3 and forms a plug-in fit with the external slow charging socket;
the low-voltage power supply in the vehicle is positioned in the vehicle and is used for built-in charging and providing power supply when the charging mode of the vehicle is built-in charging;
as shown in fig. 2, the built-in relay 1 has 4 contacts, is controlled by the vehicle controller, and includes a power supply side contact of the switch, an electrical appliance side contact of the switch, a control line input contact and a ground contact, the power supply side contact is connected with a 12V power supply, and the ground contact is grounded and used for controlling the on-off of a low-voltage power supply cable of the built-in charger;
the external relay 2 is provided with 4 contacts, is controlled by the vehicle control unit and comprises a power supply side contact of a switch, an electrical appliance side contact of the switch, a control line input contact and a grounding contact, wherein the power supply side contact is connected with an external 12V power supply, and the grounding contact is grounded and is used for controlling the on-off of a low-voltage power supply cable of the external charger;
as shown in fig. 2 and 3, the system further includes a battery management system for transmitting the charging permission or the battery system fault information to the vehicle controller through the CAN;
the vehicle control system also comprises an instrument connected with the vehicle control unit and used for displaying the content prompted by the vehicle control unit as image-text information.
And the external low-voltage power supply is positioned outside the vehicle and used for providing power for the external charger when the vehicle charging mode is external charging.
The vehicle controller module is positioned in the vehicle and used for confirming that the current charging mode is the built-in charging mode or the external charging mode according to the awakening port and detecting whether the high-voltage loop in the built-in charging mode or the external charging mode is normally connected.
One embodiment of the method of the present invention is described below with reference to FIGS. 1-8.
S1, the vehicle control unit wakes up the battery management system after receiving a wake-up signal of the built-in charger or the external charger, and the built-in charger or the external charger, the vehicle control unit and the battery management system establish communication;
as shown in fig. 1, which is a vehicle charging scheme in the prior art, it can be seen that a VCU (vehicle control unit) has only one wake-up port, but the VCU in the present invention shown in fig. 2 and 3 has two wake-up ports, where the wake-up port 1 of the VCU shown in fig. 2 is connected to a wake-up port of an internal charger, and the wake-up port 2 of the VCU shown in fig. 3 is connected to a wake-up port of an external charger. When the VCU receives the wake-up signal of the charger, the VCU sends information to wake up the BMS (battery management unit) through the CAN line.
S2, the vehicle controller confirms that the current charging mode is built-in charging or external charging according to the awakening port, if the current charging mode is external charging, the vehicle controller controls the built-in relay 1 to be switched off, and the built-in relay 1 is used for controlling power supply to the built-in charger; if the external slow charging plug is internally charged, detecting whether a resistor embedded in the external slow charging plug exists, and controlling the external relay 2 to be disconnected if the resistor exists; the external slow charging plug is used for connecting the vehicle with an external charging device; the external relay 2 is used for controlling power supply to an external charger;
built-in charging when the wake-up 1 port of the VCU is active as shown in fig. 2; the external charging is done when the wake-up 2 port of the VCU is active as shown in fig. 3.
If the charging is external charging, the VCU disconnects the built-in relay 1 through the port of the relay control 1, so that even if a user does not remove the charging motor in the vehicle through misoperation, the charging machine with the same model is arranged in the vehicle, the built-in charging machine cannot be awakened, and the normal work of the VCU, the BMS and the external charging machine cannot be interfered.
If the external slow charging plug is internally charged, whether a resistor embedded in the external slow charging plug in the figure 3 exists or not is further judged, the resistance value of the resistor can be 400 ohms, when the external slow charging plug is inserted into the external slow charging socket, a positive port of a VCU and a negative port of the VCU in the figure 3 form a loop, the VCU can detect the resistance value of the resistor in real time, and if the resistor exists, the VCU disconnects the external relay 2 through the relay control 2 port, so that the external charger cannot be awakened, and the VCU, the BMS and the internal charger cannot be interfered to normally work;
s3, when the signals of the CC and CP ports of the internal charger or the external charger are valid; the battery management system, the internal charger or the external charger and the vehicle control unit finish responding; if the high-voltage wire harness is effectively connected, the vehicle is allowed to be charged, otherwise, the vehicle is not allowed to be charged;
s3.1, when the vehicle is charged in a built-in mode, the VCU judges whether a port 1 at the high side input of the VCU detects 5V voltage output by a port 5V, if so, the VCU indicates that a high-voltage loop is closed and connected, and the built-in charging mode is allowed to be started; otherwise, the VCU does not permit the built-in slow charging mode to be started, and sends a wire harness connection abnormity prompt to the instrument;
as shown in fig. 2, two ends of a line A8 are respectively and fixedly connected to a high-voltage output plug of the charger and a slow-charging high-voltage input plug of the high-voltage distribution device, one end of a9 is fixed to the slow-charging high-voltage input plug of the high-voltage distribution device, and one end of a10 is fixed to the high-voltage output plug of the charger. Thus, when the direct-current high-voltage output plug of the charger is inserted into the socket, and the direct-current input plug of the high-voltage distribution device is inserted into the socket, the A8, the A9 and the A10 form an interlocking loop with the U-shaped connector embedded in the high-voltage output socket of the charger and the U-shaped connector embedded in the slow-charging high-voltage input socket of the high-voltage distribution device, and the 5V voltage output of the VCU can be detected by the high-side input port 1. At this time, it can be shown that the output high-voltage line of the built-in charger is normally connected with the high-voltage distribution device.
And S3.2, when the vehicle is externally charged, the VCU judges whether the high-side input port 2 detects 5V voltage output by the 5V port, if so, the VCU indicates that the high-voltage loop is closed and corresponds to the external charging mode, the external charging mode is permitted, otherwise, the external slow charging mode is not permitted to be started, and an abnormal connection prompt is sent to the instrument.
As shown in fig. 3, when the external slow charging plug is inserted into the external slow charging socket and the high-voltage output plug of the charger in the vehicle is inserted into the external slow charging high-voltage lead socket, B8, a17, a8, a9, B9 and a15 are connected to the U-shaped connector embedded in the high-voltage direct-current output socket of the external charger and the U-shaped connector embedded in the slow charging high-voltage input socket of the high-voltage power distribution device, and are conducted to form an interlocking loop. The voltage output of the 5V port of the VCU can be detected by the high side input 2 port of the VCU. At this time, the output high-voltage line of the charger in an external state can be normally connected with the high-voltage distribution device.
And S4, if the charging mode is built-in charging, the alternating current high voltage electricity of the charging gun is led into the built-in charger through a standard slow charging socket, an alternating current high voltage input cable, an alternating current input plug and a socket of the charger, and is output to the high voltage distribution device through the high voltage output plug and the socket of the charger, the direct current high voltage output cable, the slow charging high voltage input plug and the socket of the high voltage distribution device after alternating current to direct current.
If the charging mode is external charging, high voltage electricity of the charging gun is led into the external charging machine through an external standard slow charging socket, an external alternating current high voltage input cable, an alternating current input plug and a socket of the external charging machine, and is output to the high voltage power distribution device through the high voltage output plug and the socket of the charging machine, the direct current high voltage output cable of the external charging machine, the external charging plug and the socket, the external charging high voltage lead socket, the high voltage output plug of the charging machine, the direct current high voltage output cable, the slow charging high voltage input plug and the socket of the high voltage power distribution device after alternating current of the external charging machine is converted into direct current.
S5, when the whole vehicle is controlled to be awakened by the built-in charger through the awakening 1 contact, prompting a built-in charging mode, and when the whole vehicle is awakened by the external charger through the awakening 2 contact, sending information prompting an external charging mode to the instrument; when the vehicle controller is in a built-in charging mode, the vehicle controller sends a cable connection abnormity prompt message to the instrument when detecting 5V voltage through the high-side input 2 contact, and stops charging; when the vehicle controller is in an external charging mode, the vehicle controller sends a prompt message of 'abnormal cable connection' to the instrument when detecting 5V voltage through the high-side input 1 contact, and stops charging; the awakening 1, the awakening 2, the high-side input 1 and the high-side input 2 are respectively 4 contacts of the whole vehicle controller; the wake-up 1 is connected with an internal charger, the wake-up 2 is connected with an external charger, and the high-side input 1 and the high-side input 2 can detect the voltage of a 5V port;
the VCU continuously monitors the connection between the resistor embedded in the external slow charging plug and the high voltage in the external charging process, and if the resistance value of the resistor exceeds a threshold value or the high voltage connection is disconnected, the vehicle control unit controls the charger to stop charging;
and finishing charging when any unit of the battery management unit, the charger and the vehicle controller requests to finish charging.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.

Claims (10)

1. An external vehicle-mounted charging system is characterized by comprising a high-voltage power distribution device, an in-vehicle charging electric connection assembly, an out-vehicle charging connection assembly, an external low-voltage power supply and a vehicle controller module;
the high-voltage distribution device is positioned in the vehicle and used for receiving direct-current output high-voltage current of the built-in charger or the external charger and distributing the direct-current output high-voltage current to the battery pack charging loop; when the vehicle charging mode is built-in charging, the high-voltage distribution device is connected with a built-in charger through a charger high-voltage output plug in the vehicle charging electric connection assembly; when the vehicle charging mode is external charging, the high-voltage distribution device is connected with an external slow charging high-voltage lead socket in the vehicle charging electric connection assembly in an inserting manner through a charger high-voltage output plug in the vehicle charging electric connection assembly, and the external slow charging high-voltage lead socket is connected with a high-voltage direct-current output port of an external charger through an external slow charging socket in the vehicle charging electric connection assembly;
the vehicle interior charging electric connection assembly is positioned in a vehicle and used for providing high-voltage conduction connection, CC and CP signal line connection, CAN network connection, low-voltage power supply connection of an internal charger, connection of the internal charger or an external charger with a high-voltage connection detection circuit of a high-voltage power distribution device, and connection of the internal charger and a wake-up line of a vehicle control unit for an internal charger; the system is also used for providing the high-voltage transmission lead connecting vehicle inner part of the external charger and the high-voltage distribution device, the CAN network connecting vehicle inner part, the vehicle inner part of the external charger connected with a high-voltage connection detection loop of the high-voltage distribution device, the vehicle inner part of the external charger connected with an awakening line of the vehicle control unit and detecting the vehicle inner part connected with a preset resistance loop of the external slow charging plug;
the external charging connection assembly is positioned outside the vehicle and used for providing high-voltage conduction connection for an external charging system, an external part of the external charging machine and the high-voltage conduction connection of the high-voltage distribution device, CC and CP signal line connection, CAN network connection external part of the external charging machine, an external part of the external charging machine and the high-voltage connection detection loop of the high-voltage distribution device, an external part of the external charging machine and the whole vehicle controller, which are connected by the wake-up line, and a resistance part of the external slow-charging plug preset resistance loop connection;
the external low-voltage power supply is positioned outside the vehicle and used for providing power for the external charger when the vehicle charging mode is external charging;
the vehicle controller module is positioned in the vehicle and used for confirming that the current charging mode is the built-in charging mode or the external charging mode according to the awakening port and detecting whether the high-voltage loop in the built-in charging mode or the external charging mode is normally connected.
2. The external vehicle-mounted charging system according to claim 1, wherein the vehicle charging electric connection assembly comprises an internal relay 1, a switch side power supply side contact of the internal relay 1 is connected with a vehicle low-voltage power supply, a switch side electrical appliance side contact is connected with a low-voltage input port of the internal charger, and a control line input contact is connected with a control port of the internal relay 1 of the vehicle control unit and is used for controlling the on-off of a low-voltage power supply cable of the internal charger; the external charging connection assembly comprises an external relay 2, a switch side power supply side contact of the external relay 2 is connected with an external low-voltage power supply, a switch side electric appliance side contact is connected with a low-voltage input port of an external charger, a control line input contact is connected with a control port of the external relay 2 of the vehicle control unit and is used for controlling the on-off of a low-voltage power supply cable of the external charger; if the vehicle charging mode is built-in charging, the vehicle controller controls the built-in relay 1 to be closed and the external relay 2 to be opened; and if the vehicle charging mode is external charging, the vehicle controller controls the built-in relay 1 to be switched off and the external relay 2 to be switched on.
3. The externally-arranged vehicle-mounted charging system as claimed in claim 1, wherein the slow charging high-voltage input socket of the high-voltage power distribution device is internally provided with a U-shaped coupler, when the vehicle charging mode is in an internal mode, the high-voltage input port of the slow charging high-voltage input socket is connected with the high-voltage direct-current output port of the internal charger, and the U2 contact of the U-shaped coupler is connected with the U-shaped coupler U1 contact embedded in the high-voltage direct-current output socket of the internal charger; the U1 contact of the U-shaped coupler is connected to the 5V port of the vehicle controller.
4. The externally mountable vehicular charging system according to claim 1, wherein the slow charging high voltage input socket of the high voltage power distribution device includes a U-shaped coupler, and when the vehicle charging mode is external, the high voltage input port of the high voltage power distribution device is connected to the dc high voltage contact of the external slow charging high voltage lead socket through the high voltage output plug of the charger inside the vehicle, the U2 contact of the U-shaped coupler is connected to the U2 contact of the external slow charging high voltage lead socket through the high voltage output plug of the charger inside the vehicle, and the U1 contact of the U-shaped coupler is connected to the 5V port of the vehicle controller through the high voltage output plug of the charger inside the vehicle.
5. The external vehicle-mounted charging system according to claim 1, wherein the vehicle charging electric connection assembly comprises a standard slow charging plug connector, an external slow charging socket and an external slow charging high-voltage lead socket, and the standard slow charging plug connector is used for connecting a charging gun and an internal charger; when the vehicle charging mode is external charging, the external slow charging socket is used for connecting an external charger and a vehicle controller, an external low-voltage power supply and the vehicle controller, the external charger and a high-voltage power distribution device; the external slow charging high-voltage lead socket is used for connecting the high-voltage power distribution device and the external slow charging socket when the vehicle charging mode is external charging.
6. The external vehicle-mounted charging system according to claim 5, wherein the external slow charging socket comprises low-voltage connecting contacts 1-7 and a direct-current high-voltage contact, the low-voltage connecting contacts are in plug-in fit with an external slow charging plug in the external charging connection assembly, the contact 1 is connected with a relay control 2 contact of the vehicle control unit, the contact 2 is connected with a negative contact of the vehicle control unit, the contact 3 is connected with a positive contact of the vehicle control unit, the contact 4 is connected with a wake-up 2 contact of the vehicle control unit, the contact 5 is respectively connected with a CAN (controller area network) communication contact of an internal charger, the vehicle control unit and a battery management unit, the contact 6 is connected with a high-side input 2 contact of the vehicle control unit, the contact 7 is connected with a U2 contact of the external slow charging high-voltage lead socket, and the high-voltage contact is connected with the direct-current high-voltage contact of the external slow charging high-voltage lead socket;
when the vehicle charging mode is external charging, the external slow charging high-voltage lead socket is connected with a high-voltage output plug of a charger arranged in a vehicle in an inserting manner, the high-voltage output plug of the charger is connected with a high-voltage distribution device in the vehicle through a slow charging high-voltage input connector, a direct-current high-voltage contact of the external slow charging high-voltage lead socket is connected with a direct-current high-voltage contact of the high-voltage distribution device through the high-voltage output plug of the charger, a U2 contact of the external slow charging high-voltage lead socket is connected with a U2 contact of the high-voltage distribution device through the high-voltage output plug of the charger, and a vacant needle contact of the external slow charging high-voltage lead socket is connected with a high-side input 1 contact of a vehicle controller through the high-voltage output plug of the charger;
when the vehicle charging mode is built-in charging, the high-side input 1 contact of the vehicle controller is connected with the U2 contact of the high-voltage output socket of the built-in charger.
7. The external vehicle-mounted charging system according to claim 1, wherein the external charging connection assembly comprises an external standard slow charging plug connector and an external slow charging plug connector, the external standard slow charging plug connector is used for connecting a charging gun with the external charger, a high-voltage alternating current contact of the charging gun is connected with a high-voltage alternating current input contact of the external charger, and a CC signal contact and a CP information contact of the charging gun are respectively connected with a CC signal contact and a CP information contact of the external charger; the external slow charging plug comprises low-voltage contacts 1-7 and direct-current high-voltage contacts, the low-voltage contacts and the direct-current high-voltage contacts are inserted into an external slow charging socket of the vehicle internal charging electric connection assembly, one ends of the voltage contacts 1-7 are connected with low-voltage connection contacts 1-7 of the external slow charging socket in a one-to-one correspondence mode, one ends of the direct-current high-voltage contacts are connected with direct-current high-voltage contacts of the external slow charging socket, the other ends of the voltage contacts 1 are connected with a control line input contact of an external relay 2, a resistor R is connected between the other ends of the voltage contacts 2 and a voltage contact 3 in series, the other end of the voltage contact 4 is connected with a wakeup port of the external charger, the other end of the voltage contact 5 is connected with a CAN port of the external charger, the other end of the voltage contact 6 is connected with a U2 contact of a U-shaped coupler in a high-voltage direct-current output socket of the external charger, the other end of the voltage contact 7 is connected with a U1 contact of a U-shaped coupler in a high-voltage direct-current output socket of the external charger, the other end of the direct current high-voltage contact is connected with a direct current high-voltage port in a high-voltage direct current output socket of the external charger.
8. An external vehicle-mounted charging method is characterized by comprising the following steps:
s1, the vehicle control unit wakes up the battery management system after receiving a wake-up signal of the built-in charger or the external charger, and the built-in charger or the external charger, the vehicle control unit and the battery management system establish communication;
s2, the vehicle controller confirms that the current charging mode is built-in charging or external charging according to the awakening port, if the current charging mode is external charging, the vehicle controller controls the built-in relay 1 to be switched off, and the built-in relay 1 is used for controlling power supply to the built-in charger; if the external slow charging plug is internally charged, detecting whether a resistor embedded in the external slow charging plug exists, and controlling the external relay 2 to be disconnected if the resistor exists; the external slow charging plug is used for connecting the vehicle and the external charger; the external relay 2 is used for controlling power supply to an external charger;
s3, when the CC and CP port signals of the internal charger or the external charger are effective, and the response of the battery management system, the internal charger or the external charger and the vehicle control unit is finished, the high-voltage wire harness is effectively connected and the connection resistance signal is detected normally, the vehicle is allowed to be charged, otherwise, the charging is not allowed;
s4, if the charging mode is built-in charging, the alternating current high voltage electricity of the charging gun is led into the built-in charger through an alternating current high voltage input cable, and is output to the high voltage distribution device through a direct current high voltage output cable after the alternating current of the built-in charger is converted into the direct current;
if the charging mode is external charging, high voltage electricity of the charging gun is led into the external charger through an external alternating current high voltage input cable and an alternating current input connector of the external charger, and the external charger converts alternating current into direct current and then outputs the direct current high voltage electricity to the high voltage power distribution device through a direct current high voltage output cable, an external slow charging connector, an external slow charging high voltage lead socket, a charger high voltage output plug, a direct current high voltage output cable and a slow charging high voltage input connector of the external charger.
9. The externally mountable vehicle-mounted charging method according to claim 8, further comprising, after step S4: when the whole vehicle control is awakened by the built-in charger through the awakening 1 contact, the built-in charging mode is prompted, and when the whole vehicle control is awakened by the external charger through the awakening 2 contact, the information of prompting the external charging mode is sent to the instrument; when the vehicle controller is in a built-in charging mode, the vehicle controller sends a cable connection abnormity prompt message to the instrument when detecting 5V voltage through the high-side input 2 contact, and stops charging; when the vehicle controller is in an external charging mode, the vehicle controller sends a prompt message of 'abnormal cable connection' to the instrument when detecting 5V voltage through the high-side input 1 contact, and stops charging; the awakening 1, the awakening 2, the high-side input 1 and the high-side input 2 are respectively 4 contacts of the whole vehicle controller; the awakening device comprises an awakening 1, an awakening 2, an external charger and a 5V port, wherein the awakening 1 is connected with the internal charger, the awakening 2 is connected with the external charger, and the high-side input 1 and the high-side input 2 can detect the voltage of the 5V port.
10. The externally mountable vehicle-mounted charging method according to claim 8, further comprising, after step S4: and continuously monitoring the resistor embedded in the external slow charging plug in the external charging process, and controlling the charger to stop charging by the vehicle control unit if the resistance value of the resistor exceeds a threshold value.
CN202111662425.5A 2021-12-31 2021-12-31 Externally-arranged vehicle-mounted charging system and method Active CN114211979B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111662425.5A CN114211979B (en) 2021-12-31 2021-12-31 Externally-arranged vehicle-mounted charging system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111662425.5A CN114211979B (en) 2021-12-31 2021-12-31 Externally-arranged vehicle-mounted charging system and method

Publications (2)

Publication Number Publication Date
CN114211979A true CN114211979A (en) 2022-03-22
CN114211979B CN114211979B (en) 2023-05-26

Family

ID=80707316

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111662425.5A Active CN114211979B (en) 2021-12-31 2021-12-31 Externally-arranged vehicle-mounted charging system and method

Country Status (1)

Country Link
CN (1) CN114211979B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105365593A (en) * 2015-11-06 2016-03-02 郑州比克新能源汽车有限公司 Charge connection device for electric vehicle, and control method thereof
CN108429091A (en) * 2018-03-14 2018-08-21 广州云酷智能设备有限公司 A kind of the intelligent wireless charging socket and its charging method of electric vehicle
JP2020072602A (en) * 2018-11-01 2020-05-07 日産自動車株式会社 Power supply system for vehicle
CN112319259A (en) * 2020-11-13 2021-02-05 东风汽车股份有限公司 Control system and control method for alternating current charging electronic lock of electric automobile
CN113335095A (en) * 2021-06-08 2021-09-03 东风汽车集团股份有限公司 Vehicle-mounted fast and slow charging integrated charging system and method for low-voltage platform electric vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105365593A (en) * 2015-11-06 2016-03-02 郑州比克新能源汽车有限公司 Charge connection device for electric vehicle, and control method thereof
CN108429091A (en) * 2018-03-14 2018-08-21 广州云酷智能设备有限公司 A kind of the intelligent wireless charging socket and its charging method of electric vehicle
JP2020072602A (en) * 2018-11-01 2020-05-07 日産自動車株式会社 Power supply system for vehicle
CN112319259A (en) * 2020-11-13 2021-02-05 东风汽车股份有限公司 Control system and control method for alternating current charging electronic lock of electric automobile
CN113335095A (en) * 2021-06-08 2021-09-03 东风汽车集团股份有限公司 Vehicle-mounted fast and slow charging integrated charging system and method for low-voltage platform electric vehicle

Also Published As

Publication number Publication date
CN114211979B (en) 2023-05-26

Similar Documents

Publication Publication Date Title
CA2966747C (en) Multi-protocol charge port for an electric vehicle
CN104024034B (en) The discharge control method of vehicle, discharge system and vehicle
KR102516435B1 (en) Electric Vehicle Charging Controller
CN103692921B (en) High voltage charge pack
CN106585421B (en) A kind of Intelligent charging device for electric vehicles
CN106740128B (en) A kind of block terminal for electric car
CN105247754A (en) Vehicle
CN212709267U (en) Integrated high-voltage distribution box of pure electric vehicle
CN114123378B (en) Power taking control method of electric automobile
CN109532496A (en) A kind of intelligent high-pressure block terminal based on CAN bus network
CN206401962U (en) A kind of Intelligent charging device for electric vehicles
CN208931141U (en) A kind of high pressure fills distribution system and electric car
CN113492702A (en) Bidirectional vehicle-mounted charger, vehicle-mounted power supply system, charging control method and automobile
CN213007972U (en) Charging circuit and vehicle
CN114056094A (en) Vehicle-mounted power supply method, device, equipment and storage medium
CN114211979B (en) Externally-arranged vehicle-mounted charging system and method
JP2013165610A (en) Vehicle external control device applied to vehicle equipped with power storage part and charge/discharge system including vehicle external control device, vehicle, and power cable
CN113910931B (en) Wireless charging system and method for electric automobile
CN113119763B (en) Charging and discharging device and control method
CN210111639U (en) Electric automobile charging system and electric automobile
CN209852087U (en) Concentrator and battery high-voltage control system of electric automobile
KR20180049391A (en) Electric vehicle and electric vehicle charging system
CN220483101U (en) AC/DC integrated charging system
CN220483100U (en) AC/DC integrated charging system
CN113942414B (en) Charging system, charging adapter and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant