CN114211979B - Externally-arranged vehicle-mounted charging system and method - Google Patents

Externally-arranged vehicle-mounted charging system and method Download PDF

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Publication number
CN114211979B
CN114211979B CN202111662425.5A CN202111662425A CN114211979B CN 114211979 B CN114211979 B CN 114211979B CN 202111662425 A CN202111662425 A CN 202111662425A CN 114211979 B CN114211979 B CN 114211979B
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charging
voltage
external
vehicle
charger
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CN114211979A (en
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王建波
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Dongfeng Peugeot Citroen Automobile Co Ltd
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Dongfeng Peugeot Citroen Automobile Co Ltd
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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
    • 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

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  • 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 externally-arranged vehicle-mounted charging system and method, comprising a high-voltage distribution device, an in-vehicle charging connection assembly, an out-vehicle charging connection assembly, an external low-voltage power supply and a whole vehicle controller module; 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 components, being beneficial to improving the endurance and reducing the investment of other charging facilities can be realized; meanwhile, the built-in and external charging vehicle-mounted connecting system is compatible, so that the built-in or external charging vehicle-mounted connecting system of the charger is convenient to replace and mount, and reliable in work.

Description

Externally-arranged vehicle-mounted charging system and method
Technical Field
The invention belongs to the technical field of vehicle-mounted charging, and particularly relates to an externally-arranged vehicle-mounted charging system and method.
Background
Most electric vehicles are typically equipped with two sets of charging systems, a dc fast charge and an ac slow charge. The direct current quick charging is a mode which is 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 which is usually adopted when the vehicle is 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 automobile. When the alternating current slow charging is selected, the vehicle acquires electric energy from an external 220V alternating current power supply, and the vehicle-mounted charger is generally responsible for converting the alternating current into direct current and charging the battery pack after voltage matching. From the function of the charger, it is not an essential part for the running of the vehicle, because the conversion of alternating current and direct current and the voltage matching can be completed outside.
At present, related documents discuss schemes of canceling a slow charging machine, using direct current to charge or change electricity quickly for vehicles, and the like. However, the existing direct current quick charging station has high facility cost and large occupied area, and because high power and high voltage impact on a power grid is large and difficult to popularize in high density, the power change has certain requirements on places and equipment facilities, and the popularization cost is high. The 220V power supply is easy to find, is very popular and convenient to charge, so that the problem of convenience is considered to cancel the slow charging machine, which is not realistic at present.
Considering the use scene of the vehicle, the charging machines are idle parts when running or when carrying out direct current fast charging, if a plurality of vehicles share the charging machines, the configuration rate of the charging machines can be reduced, especially, the problem of batch purchase of similar electric vehicles can be seen when public operation vehicles such as driving schools, taxis and the like have operation characteristic surveys of centralized parking places, the vehicles share the same charging machines externally, and the effect that the plurality of vehicles share one charging machine can be achieved when charging is carried out in the centralized places, so that income is realized; meanwhile, the quality of the vehicle-mounted parts is reduced, and the cruising duration is improved.
Disclosure of Invention
The invention provides an externally-arranged vehicle-mounted charging system and method, which are used for achieving one of the purposes of the invention.
The high-voltage distribution device is positioned in the vehicle and is used for receiving direct-current output high-voltage current of the built-in charger or the external charger and distributing the 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 the built-in charger through a charger high-voltage output plug in the vehicle charging 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 connection assembly in an inserting mode through a high-voltage output plug of a charger in the vehicle charging connection assembly, and the external slow-charging high-voltage lead socket is connected with a high-voltage direct-current output port of the external charger through an external slow-charging socket in the vehicle charging connection assembly.
Some vehicles are provided with a charger, and can be charged through the built-in charger, and the vehicle charging mode is built-in charging in the scene; some vehicles do not have a charger, and are charged through an external charger, so that the vehicle charging mode is external charging in the scene.
The in-vehicle charging connection assembly is positioned in the vehicle and is used for providing high-voltage conduction connection of a charging gun, a built-in charger and a high-voltage power distribution device for the built-in charging system, the charging gun is connected with CC and CP signal lines of the charger, the vehicle controller, 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 the 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 controller; the high-voltage transmission connection vehicle interior part is used for providing an external charging machine and a high-voltage distribution device for the external charging system, the vehicle interior part is connected with a CAN network of the whole vehicle controller, the external charging machine and the battery management unit, the vehicle interior part is connected with a control line of the external relay 2, the vehicle interior part is connected with a high-voltage connection detection loop of the high-voltage distribution device, the vehicle interior part is connected with a wake-up line of the external charging machine and the vehicle controller, and the vehicle interior part is connected with a preset resistance loop of the external slow charging plug.
The external charging connection assembly is positioned outside the vehicle and is used for providing a charging gun for an external charging system, connecting the external charging machine with high-voltage conduction, connecting the external charging machine with a high-voltage transmission part of a high-voltage distribution device, connecting the charging gun with CC and CP signal wires of the charging machine, connecting a vehicle outer part of a CAN network of a vehicle controller, the external charging machine and a battery management unit, connecting a control wire of an external relay 2 with the vehicle outer part, connecting the external charging machine with a high-voltage connection detection loop of the high-voltage distribution device with the vehicle outer part of a wake-up wire of the external charging machine and the vehicle controller, and presetting a resistance part of a resistance loop connection of an external slow charging plug.
The external power supply is positioned outside the vehicle, and is used for providing power for the external charger when the vehicle charging mode is external charging;
the whole vehicle controller module is positioned in a vehicle, and is used for confirming whether the current charging mode is built-in charging or external charging according to the wake-up port and detecting whether a high-voltage loop in the built-in or external charging mode is normally connected.
The in-vehicle charging connection assembly comprises an in-vehicle relay 1, wherein a switch side power supply side contact of the in-vehicle relay 1 is connected with an in-vehicle low voltage power supply, a switch side electric appliance side contact is connected with a low voltage input port of a built-in charger, and a control line input contact is connected with a control port of the in-vehicle relay 1 of the whole vehicle controller and is used for controlling on-off of a power supply cable of the built-in 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 power supply, a switch side electric appliance side contact is connected with a low-voltage input port of an external charging machine, and a control wire input contact is connected with a control port of the external relay 2 of the whole vehicle controller and is used for controlling on-off of a power supply cable of the external charging machine; if the vehicle charging mode is built-in charging, the whole vehicle controller controls the built-in relay 1 to be closed and the external relay 2 to be opened; if the vehicle charging mode is external charging, the whole vehicle controller controls the internal relay 1 to be opened and the external relay 2 to be closed.
The slow-charging high-voltage input socket of the high-voltage distribution device comprises a U-shaped connector, when the vehicle charging mode is built-in, 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 built-in charger, and the U2 contact of the U-shaped connector is connected with the U1 contact of the U-shaped connector embedded in the high-voltage direct-current output socket of the built-in charger; the U1 contact of the U-shaped coupler is connected with the 5V port of the vehicle controller.
The low-voltage charging high-voltage input socket of the high-voltage distribution device comprises a U-shaped connector, when the vehicle charging mode is external, the high-voltage input port of the high-voltage distribution device is connected with the direct-current high-voltage contact of the external low-voltage charging high-voltage lead socket through a charger high-voltage output plug in the vehicle, the U2 contact of the U-shaped connector is connected with the U2 contact of the external low-voltage charging high-voltage lead socket through a charger high-voltage output plug in the vehicle, and the U1 contact of the U-shaped connector is connected with the 5V port of the vehicle controller through a charger high-voltage output plug in the vehicle.
The vehicle internal charging connection assembly 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 charging machine, and when a vehicle charging mode is external charging, the external slow charging socket is used for connecting the external charging machine and a vehicle controller, an external low-voltage power supply and the vehicle controller, and an external charging machine and a high-voltage power distribution device; the external slow charging high-voltage lead socket is used for connecting the high-voltage distribution device with the external slow charging socket when the vehicle charging mode is external charging.
The external slow charging socket comprises low-voltage connection contacts 1-7 and direct-current high-voltage contacts, the low-voltage connection contacts are in plug-in fit with an external slow charging plug in the external charging connection assembly, the contact 1 of the low-voltage connection socket is connected with a relay control 2 contact of the whole vehicle controller, the contact 2 of the low-voltage connection socket is connected with a negative electrode contact of the whole vehicle controller, the contact 3 of the low-voltage connection socket is connected with a positive electrode contact of the whole vehicle controller, the contact 4 of the low-voltage connection socket is connected with a wake-up 2 contact of the whole vehicle controller, the contact 5 of the low-voltage connection socket is respectively connected with CAN communication contacts of an internal charger, the whole vehicle controller and a battery management unit, the contact 6 of the low-voltage connection socket is connected with a high-side input 2 contact of the whole vehicle controller, the contact 7 of the low-voltage connection socket is connected with a U2 contact of the external slow charging high-voltage lead socket, and the high-voltage connection socket 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, an external slow charging high-voltage lead socket is spliced with a charger high-voltage output plug arranged in the vehicle, the charger high-voltage output plug is connected with a high-voltage power distribution device in the vehicle through a slow charging high-voltage input plug 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 power distribution device through the charger high-voltage output plug, a U2 contact of the external slow charging high-voltage lead socket is connected with a U2 contact of the high-voltage power distribution device through the charger high-voltage output plug, and an empty needle contact of the external slow charging high-voltage lead socket is connected with a high-side input 1 contact of a whole vehicle controller through the charger high-voltage output plug;
when the vehicle charging mode is built-in charging, the high-side input 1 contact of the whole 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, wherein the external standard slow charging plug connector is used for connecting a charging gun with 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 are connected with an external slow charging socket of the vehicle internal charging connection assembly in an inserting mode, one ends of the voltage contacts 1-7 are connected with the low-voltage connecting 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 the direct-current high-voltage contacts of the external slow charging socket, the other ends of the voltage contacts 1 are connected with control line input contacts of the external relay 2, a resistor R is connected in series between the other ends of the voltage contacts 2 and the voltage contact 3, the other ends of the voltage contacts 4 are connected with a wake-up port of the external charger, the other ends of the voltage contacts 5 are connected with a CAN port of the external charger, the other ends of the voltage contacts 6 are connected with a U-shaped contact of a U-shaped connector in a high-voltage direct-current output socket of the external charger, and the other ends of the voltage contacts 7 are connected with a U-shaped contact of the U-shaped connector in the high-voltage direct-current output socket of the external charger.
The vehicle-mounted charging method capable of realizing the second purpose of the invention comprises the following steps:
s1, after receiving a wake-up signal of an internal charger or an external charger, the whole vehicle controller wakes up a battery management system, and the internal charger or the external charger, the whole vehicle controller and the battery management system establish communication;
s2, the whole vehicle controller confirms that the current charging mode is internal charging or external charging according to the awakening port, if the current charging mode is external charging, the whole vehicle controller controls the internal relay 1 to be disconnected, and the internal relay 1 is used for controlling power supply to the internal charger; if the electric charge is built-in charging, detecting whether a resistor buried in the external slow charging plug exists or not, and if the resistor exists, controlling the external relay 2 to be disconnected; the external slow charging plug is used for connecting a vehicle with an external charging device; the external relay 2 is used for controlling the power supply of an external charger;
s3, when CC and CP port signals of the built-in charger or the external charger are valid, and the response of the battery management system, the built-in charger or the external charger and the whole vehicle controller is finished, the high-voltage wire harness connection is valid, and the connection resistance signal detection is normal, the vehicle is allowed to be charged, otherwise, the vehicle is not allowed to be charged;
and S4, if the charging mode is built-in charging, the alternating-current high-voltage power 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 being converted into direct current through the alternating-current of the built-in charger.
If the charging mode is external charging, the high-voltage power of the charging gun is led into the external charging machine through an external alternating-current high-voltage input cable and an alternating-current input plug connector of the external charging machine, and the external charging machine converts alternating current into direct current and then outputs the direct-current power to the high-voltage power distribution device through a direct-current high-voltage output cable, an external charging plug connector, an external slow-charging high-voltage lead socket and a charging machine high-voltage output plug, a direct-current high-voltage output cable and a slow-charging high-voltage input plug and socket of the high-voltage power distribution device.
S5, prompting an internal charging mode when the whole vehicle control is awakened by the internal charging machine through the awakening 1 contact, and sending prompting information of the external charging mode to the instrument when the whole vehicle control is awakened by the external charging machine through the awakening 2 contact; when the vehicle controller detects 5V voltage through the high-side input 2 contact in a built-in charging mode, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument, and stops charging; when the vehicle controller is in an external charging mode and detects 5V voltage through a high-side input 1 contact, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument and stops charging; the wake-up 1, the wake-up 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 the built-in charger, the wake-up 2 is connected with the 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 and detects 5V voltage through a high-side input 1 contact, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument and stops charging; and continuously monitoring the resistor buried in the external slow charging plug in the external charging process, and controlling the charger to stop charging by the whole vehicle controller if the resistance value exceeds a threshold value, wherein the threshold value can be within the range of plus or minus 10% of the resistance value.
The beneficial effects are 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 components, being beneficial to improving the endurance and reducing the investment of other charging facilities can be realized; meanwhile, the built-in and external charging vehicle-mounted connecting system is compatible, so that the built-in or external charging vehicle-mounted connecting system of the charger is convenient to replace and mount, and reliable in work.
Drawings
FIG. 1 is a system connection diagram of a prior art charger when built-in;
FIG. 2 is a system connection diagram of the invention with the charger in place;
FIG. 3 is a system connection diagram of the battery charger of the present invention when the battery charger is external;
FIG. 4 is a schematic diagram of the charger high voltage output plug and socket contacts;
FIG. 5 is a schematic diagram of slow-charging high-voltage input plug and socket contacts in a high-voltage distribution device;
FIG. 6 is a schematic diagram of an external slow charge high voltage lead socket contact;
FIG. 7 is a schematic diagram of contacts of an external slow charge plug and socket;
fig. 8 is a schematic diagram of contacts of an external charger high voltage dc output plug.
Detailed Description
The following detailed description is presented to explain the claimed invention and to enable those skilled in the art to understand the claimed invention. The scope of the invention is not limited to the following specific embodiments. It is also within the scope of the invention to include the claims of the present invention as made by those skilled in the art, rather than the following detailed description.
One embodiment of the system of the present invention is described next in connection with fig. 1-8.
Fig. 2 and 3 are respectively system connection diagrams of the battery charger when the battery charger is built-in and external, and the battery charger comprises a high-voltage power distribution device, an in-vehicle charging connection assembly, an out-vehicle charging connection assembly, an external low-voltage power supply and a whole 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 a built-in charger and a 5V port of the whole vehicle controller through a low-charging high-voltage input plug-in connector and is used for receiving direct-current output high-voltage current of the built-in charger and distributing the direct-current output high-voltage current to a battery pack charging loop; when the vehicle charging mode is built-in charging, the high-voltage distribution device is connected with the built-in charger through a charger high-voltage output plug in the vehicle charging 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 connection assembly in an inserting mode through a high-voltage output plug of a charger in the vehicle charging connection assembly, and the external slow-charging high-voltage lead socket is connected with a high-voltage direct-current output port of the external charger through an external slow-charging socket in the vehicle charging connection assembly.
The in-vehicle charging connection assembly is located in a vehicle, and as shown in fig. 2, the in-vehicle charging connection assembly 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 in-vehicle charger 12V low voltage power supply cable, an in-vehicle CAN communication cable, an in-vehicle charger wake-up cable, an in-vehicle charger low voltage cable plug, a charger high voltage output plug, an in-vehicle charger direct current output high voltage cable connection detection circuit A8 section, an in-vehicle charger direct current output high voltage cable connection detection circuit A9 section, an in-vehicle charger direct current output high voltage cable connection detection circuit A10 section, an in-vehicle relay 1 control cable, an out-vehicle charger wake-up 2 section cable, an anode cable, a cathode cable, an out-vehicle charger direct current output high voltage cable connection detection circuit A15 section, an out-vehicle relay 2 control cable A16 section, an out-vehicle slow charging high voltage lead, an out-vehicle direct current output high voltage cable connection detection circuit A9 section, and an out-vehicle charging high voltage lead connection detection circuit A17 section.
The standard slow charging socket comprises a slow charging alternating current high voltage input contact, a CC contact and a CP contact, and forms plug-in fit with the standard slow charging plug;
the in-car alternating current input cable is used for connecting the alternating current high-voltage input contact of the charging gun to the alternating current high-voltage input contact of the built-in charger;
the alternating current input plug in the vehicle comprises an alternating current high-voltage input contact which is in plug-in fit with a high-voltage alternating current input socket of the built-in charger;
the in-car CC cable is used for connecting a CC contact of a standard slow charging socket and a CC contact of a low-voltage harness plug of a built-in charger;
the in-car CP cable is used for connecting a CP contact of a standard slow charging socket and a CP contact of a low-voltage cable plug of a built-in charger;
the low-voltage power supply cable of the charger in the vehicle is used for connecting a side contact of an electric appliance for a switch of the built-in relay 1 and a 12V input contact of a low-voltage cable plug of the charger;
the in-vehicle CAN communication cable is used for connecting a CAN communication contact of the built-in charger, the whole vehicle controller and the battery management unit with a contact 5 of the external slow charging socket;
the in-vehicle battery charger wake-up cable is used for connecting the built-in battery charger wake-up contact and a wake-up 1 contact of the whole vehicle controller;
the low-voltage harness plug of the in-vehicle charger 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 plug-in matching relationship with a low-voltage harness socket of the built-in charger;
as shown in fig. 4, the high-voltage output plug of the charger comprises a contact U1, a contact U2 and a direct-current high-voltage contact, and forms 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 in-vehicle charger is used for connecting the direct-current high-voltage contacts of the built-in charger and the high-voltage distribution device.
As shown in fig. 5, the slow-charging high-voltage input plug comprises a contact U1, a contact U2 and a direct-current high-voltage contact, and forms plug-in fit with a slow-charging high-voltage input socket of the high-voltage distribution device;
the section A8 of the direct-current output high-voltage cable connection detection loop of the charger is used for connecting a high-voltage output plug contact U1 of the charger and a low-voltage input plug contact U2 of the charger;
the direct-current output high-voltage cable of the charger is connected with the A9 section of the detection loop and is used for connecting the contact U1 of the slow-charging high-voltage input plug and the contact 5V of the whole vehicle controller;
the section A10 of the direct-current output high-voltage cable connection detection circuit of the charger is used for connecting a high-voltage output plug contact U2 of the charger with a high-side input 1 contact of the whole vehicle controller;
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 battery charger wake-up 2 in-vehicle section cable is used for connecting the wake-up 2 contact of the whole vehicle controller and the external slow charging socket contact 4;
the positive cable is used for connecting a positive contact of the whole vehicle controller and an external slow charging socket contact 3;
the negative cable is used for connecting a negative contact of the whole vehicle controller with an external slow charging socket contact 2;
the direct-current output high-voltage cable of the charger is connected with a detection loop A15 section and is connected with a high-side input 2 contact of the whole vehicle controller and an external slow charging socket contact 6;
the control cable A16 section of the external relay 2 is used for connecting the relay control 2 contact of the whole vehicle controller and the external slow charging socket contact 1;
the external slow charging socket comprises low-voltage connecting contacts 1 to 7 and direct-current high-voltage contacts, 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 section A17 of the direct-current output high-voltage cable connection detection circuit of the charger 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, an empty needle contact and a direct-current high-voltage contact, and forms a plug-in matching relationship with a high-voltage output plug of the charger;
the external charging connection assembly is positioned outside a 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 wake-up cable, an external charger low-voltage cable 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 section, an external high-voltage cable connection detection loop B9 section, an external relay 2 control cable and an external slow charging plug, as shown in fig. 3;
the vehicle exterior standard slow charging socket comprises a slow charging alternating current high voltage input contact, a CC contact and a CP contact, and forms plug-in fit with a standard slow charging plug outside the vehicle;
the external alternating current input cable is used for connecting the alternating current high-voltage input contact of the charging gun to the alternating current high-voltage input contact of the external charger;
the external alternating current input plug comprises an alternating current high-voltage input contact which is in plug-in fit with the high-voltage alternating current input socket of the external charger;
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 cable plug;
the external CP cable is used for connecting the CP contact of the external standard slow charging socket and the CP contact of the external charger low-voltage cable plug;
the 12V low-voltage power supply cable of the external charger is used for connecting the side contact of the electric appliance for the switch of the external relay 2 and the 12V input contact of the low-voltage cable 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 charging machine wake-up cable is used for connecting an external charging machine wake-up contact and an external slow charging plug contact 4;
the external charger low-voltage cable plug comprises a CC contact, a CP contact, a 12V input contact, a CAN contact and a wake-up contact; the external charger high-voltage output plug comprises a contact U1, a contact U2 and a direct-current high-voltage contact, and is in plug-in fit with the external charger high-voltage direct-current output socket;
the external charger direct-current output high-voltage cable is used for connecting an external charger direct-current high-voltage contact and an 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 a U1 contact of the external high-voltage output plug of the charger and a 7 contact of the external slow-charging plug;
the B9 section of the external high-voltage cable connection detection loop is used for connecting a U2 contact of the external high-voltage output plug of the charger and a 6 contact of the external slow-charging plug;
as shown in fig. 3, the control cable of the external relay 2 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 connected in series between the contact 2 and the contact 3 and forms plug-in fit with an external slow charging socket;
the vehicle internal low-voltage power supply is positioned in the vehicle, and is used for built-in charging and supplying power when the vehicle charging mode is built-in charging;
as shown in fig. 2, the built-in relay 1 is provided with 4 contacts, which are controlled by the whole vehicle controller, and comprises a power supply side contact of a switch, a power consumption side contact of the switch, a control line input contact and a grounding contact, wherein the power supply side contact is connected with a 12V power supply, and the grounding contact is grounded and used for controlling the on-off of a power supply cable of a built-in charger;
the external relay 2 is provided with 4 contacts which are controlled by the whole vehicle controller and comprise a power supply side contact of a switch, a power consumption 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 used for controlling the on-off of a power supply cable of the external charger;
as shown in fig. 2 and 3, the vehicle controller further comprises a battery management system for transmitting a charging license or battery system fault information to the vehicle controller through the CAN;
the system also comprises an instrument connected with the whole vehicle controller and used for displaying the prompt content of the whole vehicle controller as graphic information.
The external low-voltage power supply is positioned outside the vehicle and is used for providing power for the external charger when the vehicle charging mode is external charging.
The whole vehicle controller module is positioned in a vehicle, and is used for confirming whether the current charging mode is built-in charging or external charging according to the wake-up port and detecting whether a high-voltage loop in the built-in or external charging mode is normally connected.
One embodiment of the method of the present invention is described below in conjunction with FIGS. 1-8.
S1, after receiving a wake-up signal of an internal charger or an external charger, the whole vehicle controller wakes up a battery management system, and the internal charger or the external charger, the whole vehicle controller and the battery management system establish communication;
as shown in fig. 1, which shows a vehicle-mounted charging scheme in the prior art, it can be seen from the figure that the VCU (whole vehicle controller) has only one wake-up port, but the VCU in the present invention shown in fig. 2 and 3 has two wake-up ports, wake-up 1 of the VCU shown in fig. 2 is connected to the wake-up port of the internal charger, and wake-up 2 of the VCU shown in fig. 3 is connected to the wake-up port of the 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 whole vehicle controller confirms that the current charging mode is internal charging or external charging according to the awakening port, if the current charging mode is external charging, the whole vehicle controller controls the internal relay 1 to be disconnected, and the internal relay 1 is used for controlling power supply to the internal charger; if the electric charge is built-in charging, detecting whether a resistor buried in the external slow charging plug exists or not, and if the resistor exists, controlling the external relay 2 to be disconnected; the external slow charging plug is used for connecting a vehicle with an external charging device; the external relay 2 is used for controlling the power supply of an external charger;
built-in charging is performed when the wake-up 1 port of the VCU is active as shown in fig. 2; the external charge is provided when the wake-up 2 port of the VCU is active as shown in fig. 3.
If external charging is performed, the VCU disconnects the internal relay 1 through the relay control 1 port, so that even if a customer does not remove the in-vehicle charger by misoperation, the same type of charger is arranged in the vehicle, the internal charger cannot be awakened, and normal operation of the VCU, the BMS and the external charger cannot be interfered.
If the internal charging is performed, further judging whether a resistor buried in the external slow charging plug in fig. 3 exists, wherein 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 loop is formed by a VCU positive electrode port and a VCU negative electrode port in fig. 3, 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 a relay control 2 port so that the external charger cannot be awakened, and normal operation of the VCU, the BMS and the internal charger cannot be interfered;
s3, when the CC port signal of the built-in charger or the built-out charger is valid; the response of the battery management system, the built-in charger or the external charger and the whole vehicle controller is finished; the high voltage harness connection is effective, then charging of the vehicle is allowed, otherwise charging is not allowed;
s3.1, when the vehicle is charged in a built-in way, the VCU judges whether a high-side input 1 port of the vehicle detects 5V voltage output by a 5V port, and if the high-side input 1 port detects the 5V voltage, the high-voltage loop is closed and connected, and the built-in charging mode is allowed to start; otherwise, the VCU does not permit the built-in slow charging mode to start, and a wire harness connection abnormality prompt is sent to the instrument;
as shown in FIG. 2, the two ends of the A8 line are respectively and fixedly connected with a high-voltage output plug of the charger and a low-voltage input plug of the high-voltage power distribution device, one end of A9 is fixed on the low-voltage input plug of the high-voltage power distribution device, and one end of A10 is fixed on 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, after the direct current input plug of the high-voltage distribution device is inserted into the socket, the U-shaped connectors embedded in the high-voltage output socket of the charger and the U-shaped connectors embedded in the slow-charging high-voltage input socket of the high-voltage distribution device form an interlocking loop, and the 5V voltage output of the VCU can be detected by the high-side input port 1. At this time, the connection between the high-voltage line output by the built-in charger and the high-voltage distribution device is normal.
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 externally charged mode, and the externally charged mode is permitted at the moment, otherwise, the externally charged mode is not permitted to be started, and an abnormal connection prompt is sent to the instrument.
In the detection method for closing the high-voltage loop during external charging, as shown in fig. 3, an external slow charging plug is inserted into an external slow charging socket, and a high-voltage output plug of a charger positioned in a vehicle is inserted into an external slow charging high-voltage lead socket, so that a U-shaped connector buried in a high-voltage direct-current output socket in the external charger and a U-shaped connector buried in a slow charging high-voltage input socket of a high-voltage power distribution device are connected by B8, A17, A8, A9, B9 and A15, and an interlocking loop is formed. The voltage output of the 5V port of the VCU can be detected by the high side input 2 port of the VCU. At the moment, the output high-voltage line of the charger, which can represent an external state, is normally connected with the high-voltage distribution device.
And S4, if the charging mode is built-in charging, the alternating-current high-voltage power 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 power distribution device through a high-voltage output plug and a socket of the charger, a direct-current high-voltage output cable and a slow charging high-voltage input plug and a socket of the high-voltage power distribution device after alternating current is converted into direct current.
If the charging mode is external charging, the high-voltage power 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 distribution device through a slow charging high-voltage input plug and a socket of the charging machine, an external charging plug and a socket of the external charging machine, an external charging high-voltage lead socket, a charging machine high-voltage output plug, a direct current high-voltage output cable and a slow charging high-voltage input plug and a socket of the high-voltage distribution device after alternating current of the external charging machine is converted into direct current.
S5, prompting an internal charging mode when the whole vehicle control is awakened by the internal charging machine through the awakening 1 contact, and sending prompting information of the external charging mode to the instrument when the whole vehicle control is awakened by the external charging machine through the awakening 2 contact; when the vehicle controller detects 5V voltage through the high-side input 2 contact in a built-in charging mode, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument, and stops charging; when the vehicle controller is in an external charging mode and detects 5V voltage through a high-side input 1 contact, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument and stops charging; the wake-up 1, the wake-up 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 the built-in charger, the wake-up 2 is connected with the external charger, and the high-side input 1 and the high-side input 2 can detect the voltage of a 5V port;
in the external charging process, the VCU continuously monitors the resistance embedded in the external slow charging plug and high-voltage connection, and if the resistance value exceeds a threshold value or the high-voltage connection is disconnected, the whole vehicle controller controls the charger to stop charging;
and when any unit of the battery management unit, the charger and the whole vehicle controller requests to finish charging, the charging is finished.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
What is not described in detail in this specification is prior art known to those skilled in the art.

Claims (9)

1. The externally-arranged vehicle-mounted charging system is characterized by comprising a high-voltage power distribution device, an in-vehicle charging connection assembly, an out-vehicle charging connection assembly, an external low-voltage power supply and a whole vehicle controller module;
the high-voltage distribution device is positioned in the vehicle and is used for receiving direct-current output high-voltage current of the built-in charger or the external charger and distributing the 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 the built-in charger through a charger high-voltage output plug in the vehicle charging 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 connection assembly in an inserting way through a high-voltage output plug of a charger in the vehicle charging connection assembly, and the external slow-charging high-voltage lead socket is connected with a high-voltage direct-current output port of the external charger through an external slow-charging socket in the vehicle charging connection assembly;
the in-vehicle charging connection assembly is positioned in the vehicle and is used for providing high-voltage conduction connection, CC and CP signal wire connection, CAN network connection, built-in charger low-voltage power connection, high-voltage connection detection loop connection of the built-in charger or the external charger with the high-voltage power distribution device and wake-up wire connection of the built-in charger and the whole vehicle controller for the built-in charging system; the system is also used for providing an external charging system with a high-voltage conduction connection in-vehicle part of the external charging machine and the high-voltage distribution device, a CAN network connection in-vehicle part, an in-vehicle part of the external charging machine connected with a high-voltage connection detection loop of the high-voltage distribution device, and an in-vehicle part of the external charging machine connected with a wake-up line of the whole vehicle controller, and detecting the in-vehicle part of the external slow charging plug preset resistance loop connection;
the external charging connection assembly is positioned outside the vehicle and is used for providing high-voltage conduction connection for the external charging system, connecting a CC signal line with a CP signal line, connecting a CAN network with the external part of the vehicle, connecting the external charging machine with a high-voltage connection detection loop of the high-voltage distribution device, connecting the external charging machine with a wake-up line of the whole vehicle controller and connecting the external charging machine with a resistance part of a preset resistance loop of an external slow charging plug;
the external power supply is positioned outside the vehicle, and is 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 is used for confirming whether the current charging mode is built-in charging or external charging according to the wake-up port, and detecting whether a high-voltage loop in the built-in or external charging mode is normally connected;
the external charging connection assembly comprises an external standard slow charging plug connector and an external slow charging plug, wherein the external standard slow charging plug connector is used for connecting a charging gun with 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 are connected with an external slow charging socket of the in-vehicle charging connection assembly in an inserting mode, one ends of the low-voltage contacts 1-7 of the external slow charging plug are connected with the 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 the direct-current high-voltage contacts of the external slow charging socket, the other ends of the low-voltage contacts 1 are connected with control line input contacts of the external relay 2, a resistor R is connected in series between the other ends of the low-voltage contacts 2 and the low-voltage contacts 3, the other ends of the low-voltage contacts 4 are connected with a wake-up port of the external charger, the other ends of the low-voltage contacts 5 are connected with a CAN port of the external charger, the other ends of the low-voltage contacts 6 are connected with U-shaped contacts of a U-shaped connector in a high-voltage direct-current output socket of the external charger, and the other ends of the low-voltage contacts 7 are connected with a U-shaped connector in the high-voltage direct-current output socket of the external charger.
2. The vehicle-mounted charging system capable of being externally arranged according to claim 1, wherein the vehicle-mounted charging connection assembly comprises an internal relay 1, a switch side power supply side contact of the internal relay 1 is connected with a vehicle-mounted low-voltage power supply, a switch side electric appliance side contact is connected with a low-voltage input port of an internal charging machine, and a control line input contact is connected with a control port of the internal relay 1 of the vehicle controller and is used for controlling on-off of a power supply cable of the internal charging machine; 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 power supply, a switch side electric appliance side contact is connected with a low-voltage input port of an external charging machine, and a control wire input contact is connected with a control port of the external relay 2 of the whole vehicle controller and is used for controlling on-off of a power supply cable of the external charging machine; if the vehicle charging mode is built-in charging, the whole vehicle controller controls the built-in relay 1 to be closed and the external relay 2 to be opened; if the vehicle charging mode is external charging, the whole vehicle controller controls the internal relay 1 to be opened and the external relay 2 to be closed.
3. The externally-arranged vehicle-mounted charging system according to claim 1, wherein the slow-charging high-voltage input socket of the high-voltage distribution device comprises a U-shaped connector, when the vehicle charging mode is built-in, 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 built-in charger, and the U2 contact of the U-shaped connector is connected with the U1 contact of the U-shaped connector embedded in the high-voltage direct-current output socket of the built-in charger; the U1 contact of the U-shaped coupler is connected with the 5V port of the vehicle controller.
4. The externally-chargeable vehicle-mounted charging system of claim 1, wherein the low-charge high-voltage input socket of the high-voltage distribution device comprises a U-shaped connector, and when the vehicle charging mode is external, the high-voltage input port of the high-voltage distribution device is connected with the direct-current high-voltage contact of the external low-charge high-voltage lead socket through the charger high-voltage output plug in the vehicle, the U2 contact of the U-shaped connector is connected with the U2 contact of the external low-charge high-voltage lead socket through the charger high-voltage output plug in the vehicle, and the U1 contact of the U-shaped connector is connected with the 5V port of the vehicle controller through the charger high-voltage output plug in the vehicle.
5. The externally-chargeable vehicle-mounted charging system of claim 1, wherein the in-vehicle charging coupling assembly comprises a standard slow-charge plug-in connector, an external slow-charge socket, and an external slow-charge high-voltage lead socket, the standard slow-charge plug-in connector being used for connecting a charging gun with an internal charger; when the vehicle charging mode is external charging, the external slow charging socket is used for connecting an external charger with the whole vehicle controller, an external low-voltage power supply with the whole vehicle controller, and the external charger with the high-voltage power distribution device; the external slow charging high-voltage lead socket is used for connecting the high-voltage distribution device with the external slow charging socket when the vehicle charging mode is external charging.
6. The externally-arranged vehicle-mounted charging system according to claim 5, wherein the externally-arranged slow charging socket comprises low-voltage connection contacts 1-7 and direct-current high-voltage contacts, the low-voltage connection contacts are in plug-in fit with an externally-arranged slow charging plug in the vehicle external charging connection assembly, the contact 1 of the low-voltage connection plug is connected with a relay control 2 contact of the vehicle controller, the contact 2 of the low-voltage connection plug is connected with a cathode contact of the vehicle controller, the contact 3 of the low-voltage connection plug is connected with an anode contact of the vehicle controller, the contact 4 of the low-voltage connection plug is connected with a wake-up 2 contact of the vehicle controller, the contact 5 of the low-voltage connection plug is respectively connected with CAN communication contacts of an internal charger, the vehicle controller and a battery management unit, the contact 6 of the low-voltage connection plug is connected with a U2 contact of the externally-arranged slow charging high-voltage lead socket, and the high-voltage connection plug is connected with the direct-current high-voltage contact of the externally-arranged slow charging high-voltage lead socket;
when the vehicle charging mode is external charging, an external slow charging high-voltage lead socket is spliced with a charger high-voltage output plug arranged in the vehicle, the charger high-voltage output plug is connected with a high-voltage power distribution device in the vehicle through a slow charging high-voltage input plug 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 power distribution device through the charger high-voltage output plug, a U2 contact of the external slow charging high-voltage lead socket is connected with a U2 contact of the high-voltage power distribution device through the charger high-voltage output plug, and an empty pin contact of the external slow charging high-voltage lead socket is connected with a high-side input 1 contact of the whole vehicle controller through the charger high-voltage output plug;
when the vehicle charging mode is built-in charging, the high-side input 1 contact of the whole vehicle controller is connected with the U2 contact of the high-voltage output socket of the built-in charger.
7. An externally-applicable vehicle-mounted charging method of the system of claim 1, comprising the steps of:
s1, after receiving a wake-up signal of an internal charger or an external charger, the whole vehicle controller wakes up a battery management system, and the internal charger or the external charger, the whole vehicle controller and the battery management system establish communication;
s2, the whole vehicle controller confirms that the current charging mode is internal charging or external charging according to the awakening port, if the current charging mode is external charging, the whole vehicle controller controls the internal relay 1 to be disconnected, and the internal relay 1 is used for controlling power supply to the internal charger; if the electric charge is built-in charging, detecting whether a resistor buried in the external slow charging plug exists or not, and if the resistor exists, controlling the external relay 2 to be disconnected; the external slow charging plug is used for connecting a vehicle with an external charger; the external relay 2 is used for controlling the power supply of an external charger;
s3, when CC and CP port signals of the built-in charger or the external charger are valid, and the response of the battery management system, the built-in charger or the external charger and the whole vehicle controller is finished, the high-voltage wire harness connection is valid, and the connection resistance signal detection is normal, the vehicle is allowed to be charged, otherwise, the vehicle is not allowed to be charged;
s4, if the charging mode is built-in charging, the alternating-current high-voltage power 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 power distribution device through a direct-current high-voltage output cable after being converted into direct current through the built-in charger;
if the charging mode is external charging, the high-voltage power of the charging gun is led into the external charging machine through the external alternating-current high-voltage input cable and the alternating-current input plug-in connector of the external charging machine, and the external charging machine converts alternating-current power into direct-current power and then outputs the direct-current high-voltage output cable, the external slow-charging plug-in connector, the external slow-charging high-voltage lead socket, the charging machine high-voltage output plug, the direct-current high-voltage output cable and the slow-charging high-voltage input plug-in connector of the external charging machine to the high-voltage distribution device.
8. The externally chargeable vehicle-mounted charging method of claim 7, further comprising, after step S4: when the whole vehicle control is awakened by the internal charger through the awakening 1 contact, prompting an internal charging mode, and when the whole vehicle control is awakened by the external charger through the awakening 2 contact, sending information prompting the external charging mode to the instrument; when the vehicle controller detects 5V voltage through the high-side input 2 contact in a built-in charging mode, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument, and stops charging; when the vehicle controller is in an external charging mode and detects 5V voltage through a high-side input 1 contact, the vehicle controller sends a 'cable connection abnormality' prompt message to the instrument and stops charging; the wake-up 1, the wake-up 2, the high-side input 1 and the high-side input 2 are respectively 4 contacts of the whole vehicle controller; wherein wake up1 is connected with an internal charger, 2 is awakened and 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 。
9. The externally chargeable vehicle-mounted charging method of claim 7, further comprising, after step S4: continuously monitoring a resistor buried in the external slow charging plug in the external charging process, and controlling the charger to stop charging by the whole vehicle controller 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)

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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
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