CN113858986A - Charging switching device, vehicle and method for identifying vehicle charging and discharging mode - Google Patents

Charging switching device, vehicle and method for identifying vehicle charging and discharging mode Download PDF

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Publication number
CN113858986A
CN113858986A CN202010617165.9A CN202010617165A CN113858986A CN 113858986 A CN113858986 A CN 113858986A CN 202010617165 A CN202010617165 A CN 202010617165A CN 113858986 A CN113858986 A CN 113858986A
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China
Prior art keywords
charging
vehicle
terminal
resistance value
charge
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CN202010617165.9A
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Chinese (zh)
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CN113858986B (en
Inventor
程东
石雷
罗建兴
薛鹏辉
陈明文
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BYD Co Ltd
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BYD 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
    • B60L53/10—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
    • B60L53/10—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
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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

Abstract

The invention discloses a charging switching device, a vehicle and a method for identifying a vehicle charging and discharging mode, wherein the charging switching device comprises: the direct current side connection port is suitable for being connected with direct current charging equipment; the alternating current side connection port is suitable for being connected with a vehicle-mounted alternating current charging socket; the first end of the first resistance unit after being connected with the first switch in series is connected with the first node, and the second end of the first resistance unit after being connected with the first switch in series is connected with the second node; the first switch is a normally open switch, and when the alternating current side connecting port and the vehicle-mounted alternating current charging socket are in a matched connection state, the first switch is switched to a closed state. The device can realize the switching of direct current power supply signal, realizes the matching of direct current interface and the interchange interface that charges, for only having the vehicle of interchange interface and realizing the direct current function of charging and providing the support under the prerequisite of exchanging the interface that charges not modifying automobile body mould and molding.

Description

Charging switching device, vehicle and method for identifying vehicle charging and discharging mode
Technical Field
The invention relates to the technical field of vehicles, in particular to a charging switching device, a vehicle and a method for identifying a vehicle charging and discharging mode.
Background
The new energy automobile and new energy facility industry is developed vigorously, and as subsidies gradually tend to charge operation facility enterprises, public charging stations will fly again. The existing hybrid vehicles only support an alternating current charging port and can only charge the vehicles in the modes of an alternating current jack, an alternating current charging station and the like, but the alternating current charging has the defects of low charging power and low charging speed. Meanwhile, governments and social resources in various places vigorously develop public charging, but the yield of alternating-current charging stations is low, the construction willingness of operators is gradually reduced, and the operators are more inclined to build direct-current charging stations, so that hybrid vehicles cannot enjoy the development red profit of public charging stations, the difficulty of charging difficulty is formed, the hybrid vehicles are slow to charge and difficult to charge, and the vehicle using experience of users is seriously influenced.
In the related art, the direct-current charging port is additionally arranged on the side wall of the vehicle, and the two charging modes of the vehicle are selected in an alternating-current charging port and direct-current charging port mode. However, this solution is costly, requires modification of the body mold and the shape, and can only be implemented in newly developed vehicle models, and cannot be applied to vehicles that have been shipped from factories.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a charging adapter device, which can implement the adapter of a dc power signal, implement the matching between a dc charging interface and an ac charging interface, and provide support for implementing a dc charging function for a vehicle having only an ac charging interface without modifying a vehicle body mold and a shape.
The second purpose of the invention is to provide a vehicle.
The invention also aims to provide a method for identifying the vehicle charge-discharge mode.
In order to solve the above problem, a charging adapter device according to an embodiment of a first aspect of the present invention includes: a dc side connection port adapted to be connected to a dc charging device, the dc side connection port including a dc power supply positive terminal, a dc power supply negative terminal, a first ground terminal, and a first connection control confirmation terminal; the vehicle-mounted AC charging socket comprises an AC side connecting port, a DC side connecting port and a control signal generating port, wherein the AC side connecting port is suitable for being connected with a vehicle-mounted AC charging socket and comprises a first AC terminal, a neutral terminal, a second grounding terminal and a second connection control confirmation terminal; the positive terminal of the direct-current power supply is electrically connected with the first alternating-current terminal, the negative terminal of the direct-current power supply is electrically connected with the neutral terminal, the first ground terminal is electrically connected with the second ground terminal, a first node is arranged on a connecting line of the first ground terminal and the second ground terminal, the first connection control confirmation terminal is electrically connected with the second connection control confirmation terminal, and a second node is arranged on a connecting line of the first connection control confirmation terminal and the second connection control confirmation terminal; the first end of the first resistance unit after being connected with the first switch in series is connected with the first node, and the second end of the first resistance unit after being connected with the first switch in series is connected with the second node; the first switch is a normally open switch, and when the alternating current side connecting port and the vehicle-mounted alternating current charging socket are in a matched connection state, the first switch is switched to a closed state.
According to the charging switching device provided by the embodiment of the invention, the vehicle side and the direct current charging equipment side are physically connected through the switching mode of the charging switching device based on the connection of the direct current side connection port and the connection of the alternating current side connection port and the vehicle-mounted alternating current charging socket, so that a direct current power supply signal of the direct current charging equipment is switched to the interior of the vehicle through the charging switching device, and the direct current charging function of the vehicle is realized.
In some embodiments, the dc-side connection port further includes a first communication terminal, a second communication terminal, a first connection confirmation terminal, a first auxiliary power supply terminal, and a second auxiliary power supply terminal; the AC side connection port further comprises a second phase AC terminal, a third phase AC terminal and a second connection confirmation terminal; wherein the first communication terminal is electrically connected to the second phase ac terminal, the second communication terminal is electrically connected to the third phase ac terminal, and the first connection confirmation terminal, the second connection confirmation terminal, the first auxiliary power supply terminal, and the second auxiliary power supply terminal are left vacant.
An embodiment of a second aspect of the invention provides a vehicle comprising: the vehicle-mounted alternating current charging socket is suitable for being matched and connected with the charging switching device in the embodiment, and comprises a third grounding terminal, a third connection confirmation terminal and a third connection control confirmation terminal; a second resistance unit having a first end connected to the third ground terminal and the vehicle body ground, and a second end connected to the third connection control confirmation terminal through a diode; the first end of the third resistor unit, which is connected with the second switch in series, is connected with the third grounding terminal and the vehicle body ground respectively, the second end of the third resistor unit, which is connected with the second switch in series, is connected with the second end of the second resistor unit, and the second switch is a normally open switch; and a second detection end of the vehicle control device is connected to a connection line between the second end of the second resistance unit and the diode, and a connection point of the second detection end of the vehicle control device is used as a second detection point, and is used for identifying a charge and discharge mode according to a resistance value between the first detection point and the third grounding end.
According to the vehicle provided by the embodiment of the invention, the vehicle-mounted AC charging socket can be matched and connected with the charging adapter device provided by the embodiment, so that the vehicle can be directly connected with the AC charging equipment to realize an AC charging function and can also be indirectly connected with the DC charging equipment to realize a DC charging function, a vehicle body mould and a model do not need to be modified, the cost is reduced, the vehicle provided by the embodiment of the invention can realize AC or DC charging and discharging based on the same charging port of the vehicle-mounted AC charging socket, the resistance value between the first detection point and the third grounding end is obtained through the vehicle control device, the charging and discharging mode is identified in a manner of adopting the detection resistance, the matching of the charging and discharging functions of the vehicle is facilitated, and a reference is provided for the DC or AC charging and discharging control of the vehicle.
In some embodiments, when identifying the charge/discharge mode, the vehicle control device is configured to determine that the charge/discharge mode is the ac charge/discharge mode if detecting that the resistance value between the first detection point and the third ground terminal is the ac charge standard resistance value, or determine that the charge/discharge mode is the dc charge mode if detecting that the resistance value between the first detection point and the third ground terminal is the dc charge standard resistance value.
In some embodiments, in the dc charging and discharging mode, in the connection loop where the first detection point and the third ground terminal are located, a total resistance value of the first resistance unit of the charging adapter device, the resistance value of the second resistance unit of the vehicle, and the resistance value of the diode is a resistance value between the first detection point and the third ground terminal.
In some embodiments, when the vehicle control device identifies the charging and discharging mode, the vehicle control device is further configured to determine that the dc charging device and the charging adapter device are connected to the vehicle-mounted ac charging socket when detecting that the voltage value between the second detection point and the vehicle body ground is increased from a zero value to a dc charging standard voltage value.
In a third aspect of the present invention, there is provided a method for identifying a vehicle charge-discharge mode, where the method is used in the vehicle provided in the above embodiment, and the method includes: acquiring a resistance value between the first detection point and a third grounding end; and identifying a charge-discharge mode according to the resistance value between the first detection point and the third grounding end.
According to the method for identifying the vehicle charge and discharge mode, the resistance value between the first detection point and the third grounding end is acquired by the vehicle control device, namely the charge and discharge mode of the vehicle is identified according to the detected resistance value in a resistance detection mode, so that the vehicle can be matched with the charge and discharge functions, and a reference is provided for the vehicle to carry out direct current or alternating current charge and discharge control.
In some embodiments, identifying a charge-discharge mode according to a resistance value between the first detection point and the third ground terminal includes:
determining that the charge-discharge mode is an alternating current charge-discharge mode when detecting that the resistance value between the first detection point and the third grounding end is an alternating current charge standard resistance value; or, when the resistance value between the first detection point and the third ground terminal is detected to be a dc charging standard resistance value, determining that the charging and discharging mode is the dc charging and discharging mode.
In some embodiments, in the dc charging and discharging mode, in the connection loop where the first detection point and the third ground terminal are located, a total resistance value of the first resistance unit of the charging adapter device, the resistance value of the second resistance unit of the vehicle, and the resistance value of the diode is a resistance value between the first detection point and the third ground terminal.
In some embodiments, the method further comprises: and when the voltage value between the second detection point and the vehicle body ground is detected to be increased from a zero value to a direct current charging standard voltage value, the direct current charging equipment and the charging switching device are determined to be connected with the vehicle-mounted alternating current charging socket.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a charge transfer device according to an embodiment of the present invention;
FIG. 2 is a schematic connection diagram of a vehicle employing a charge-transfer device for DC charging in accordance with one embodiment of the present invention;
FIG. 3 is a schematic diagram of the connection of a vehicle for AC charging according to one embodiment of the present invention;
FIG. 4 is a timing diagram of voltage and switch states during DC charging according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of the connection of the DC charging mode according to one embodiment of the present invention;
FIG. 6 is a schematic diagram of the connection of a DC charging mode according to another embodiment of the present invention;
FIG. 7 is a flow chart of a method of identifying vehicle charge and discharge modes according to one embodiment of the present invention;
fig. 8 is a flowchart of a method of identifying a charge and discharge mode of a vehicle according to another embodiment of the present invention.
Reference numerals:
a charge relay device 10; a vehicle 20;
a direct current side connection port 1; an AC side connection port 2; a vehicle-mounted ac charging socket 3; a vehicle control device 4.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In an embodiment, for a vehicle provided with an on-vehicle ac charging socket, when the ac charging device is used for charging, the on-vehicle ac charging socket may be directly physically connected with an ac charging gun of the ac charging device, so as to implement an ac charging function of the vehicle.
And when the direct current charging equipment is used for charging, because the charging port arranged on the vehicle is a vehicle-mounted alternating current charging socket, and the interface of the direct current charging equipment is a direct current charging plug, the direct current charging plug is not matched with the vehicle-mounted alternating current charging socket at the vehicle-mounted end in size, in order to realize the direct current charging function, the direct current input mode of the direct current charging equipment can be converted into the input mode of the alternating current charging port in the form of an adapter, namely the adapter is respectively connected with the direct current charging plug and the vehicle-mounted alternating current charging socket correspondingly, so that the direct current power supply can be physically connected with each other to be switched into the vehicle, and then the direct current charging equipment is charged into the battery pack by related processing in the vehicle to realize the direct current charging function.
Based on the direct-current charging function of the vehicle, the embodiment of the invention provides a charging switching device which can realize switching of direct-current power signals, realize matching of a direct-current charging interface and an alternating-current charging interface, and provide support for realizing the direct-current charging function of the vehicle only provided with the alternating-current charging interface on the premise of not modifying a vehicle body mold and a shape.
The following describes a charge transfer device provided by an embodiment of the present invention with reference to the drawings.
As shown in fig. 1, the charging relay device 10 according to the embodiment of the present invention includes a dc-side connection port 1, an ac-side connection port 2, a first resistance unit R1, and a first switch S1.
Specifically, as shown in fig. 1, the DC side connection port 1 is adapted to be connected to a DC charging device, the DC side connection port 1 includes a DC power supply positive terminal DC +, a DC power supply negative terminal DC-, a first ground terminal PE1 and a first connection control confirmation terminal CC1, and the ac side connection port 2 is adapted to be connected to an in-vehicle ac charging outlet, and the ac side connection port 2 includes a first ac terminal L1, a neutral terminal N, a second ground terminal PE2 and a second connection control confirmation terminal CP.
In the embodiment, the positive terminal DC + of the DC power supply is electrically connected to the first ac terminal L1, and the negative terminal DC-of the DC power supply is electrically connected to the neutral terminal N, so that, when performing DC charging, as shown in fig. 2, based on the connection between the DC side connection port 1 and the DC plug of the DC charging device, and the connection between the ac side connection port 2 and the vehicle-mounted ac charging socket, the DC power supply signal is transferred to the interior of the vehicle through the connection between the positive terminal DC + of the DC power supply and the first ac terminal L1, and the connection between the negative terminal DC-of the DC power supply and the neutral terminal N, and then the DC power supply signal is charged into the battery pack through the relevant processing in the vehicle, thereby implementing the DC charging function of the vehicle. Therefore, the embodiment of the invention enables the direct current charging equipment side to be in transfer connection with the vehicle side through the transfer function of the charging transfer device 10, thereby converting the direct current input mode of the direct current charging equipment into the input mode of the alternating current charging port to meet the direct current charging requirement of the vehicle, and directly connecting the direct current power supply signal into the battery pack through the charging transfer device 10 without modifying a vehicle body mould and a model to realize the direct current charging function of the vehicle.
In the embodiment, the first ground terminal PE1 is electrically connected to the second ground terminal PE2, the first node a is provided on the connection line between the first ground terminal PE1 and the second ground terminal PE2, the first connection control confirmation terminal CC1 is electrically connected to the second connection control confirmation terminal CP, the second node b is provided on the connection line between the first connection control confirmation terminal CC1 and the second connection control confirmation terminal CP, the first end of the first resistance unit R1 connected in series to the first switch S1 is connected to the first node a, and the second end of the first resistance unit R1 connected in series to the first switch S1 is connected to the second node b; the first switch S1 is a normally open switch, and when the ac side connection port 2 and the vehicle-mounted ac charging receptacle are in a matching connection state, the first switch S1 is switched to a closed state, so that a closed loop is formed between the first connection control confirmation terminal CC1 and the first ground terminal PE1, so that the vehicle can recognize a resistance value between the first connection control confirmation terminal CC1 and the first ground terminal PE1, and a reference is provided for the vehicle to perform dc charging and discharging mode recognition.
In an embodiment, as shown in fig. 2, when in the unpowered state, the dc charging device internal S0 is a normally closed switch, and the first switch S1 and the vehicle internal second switch S2 are normally open switches; when charging is connected, the switch S0 is flipped open and then closed again, the second switch S2 is still in a normally open state, and the first switch S1 is switched to a closed state when the ac side connection port 2 and the vehicle-mounted ac charging socket are in a matching connection state, so that a closed loop is formed between the first connection control confirmation terminal CC1 and the first ground terminal PE1, so as to provide a reference for the vehicle to perform dc charging and discharging mode recognition. Therefore, when the dc charging is performed based on the first switch S1 and the first resistor unit R1 connected in series between the first connection control confirmation terminal CC1 and the first ground terminal PE1 inside the charge relay device 10, that is, after the first switch S1 is switched to the closed state, the first connection control confirmation terminal CC1 forms a loop with the first ground terminal PE1 and the vehicle ac charging receptacle terminal, thus, the first resistor unit R1 inside the charging adaptor 10 and the resistor units between the two ports of the vehicle ac charging socket corresponding to the first connection control confirmation terminal CC1 and the first ground terminal PE1 are combined together to form a total resistor, for example, the resistor units R1, R2 and D1 are combined to form a total resistor in fig. 2, the vehicle direct current charging identification resistor is used as an identification resistor during vehicle direct current charging, the vehicle can conveniently confirm a direct current charging mode according to the identification resistor, and reference is provided for the vehicle to carry out direct current charging and discharging.
According to the charging adapter 10 of the embodiment of the present invention, based on the connection between the dc-side connection port 1 and the dc charging device and the connection between the ac-side connection port 2 and the on-vehicle ac charging socket, the physical connection between the vehicle side and the dc charging device side is realized by the relay of the charging adapter 10, so that the dc power signal of the dc charging device is transferred to the inside of the vehicle through the charging adapter, thereby realizing the dc charging function of the vehicle, and in the charging adapter 10 of the embodiment of the present invention, the first resistor unit R1 disposed between the connection loop of the first connection control confirmation terminal CC1 and the ground terminal PE1 is used as an identification resistor, so that the vehicle confirms the dc charging mode according to the identification resistor, and the vehicle can match the charging and discharging functions, thereby providing a reference for the vehicle to perform the dc charging and discharging control.
In some embodiments, as shown in fig. 1, the dc-side connection port 1 further includes a first communication terminal S +, a second communication terminal S-, a first connection confirmation terminal CC2, a first auxiliary power supply terminal a +, and a second auxiliary power supply terminal a-, and the ac-side connection port 2 further includes a second phase ac terminal L2, a third phase ac terminal L3, and a second connection confirmation terminal CC. The first communication terminal S + is electrically connected to the second phase ac terminal L2, and the second communication terminal S-is electrically connected to the third phase ac terminal L3. And, based on the arrangement of the ports in the dc plug of the dc charging device, the charging adaptor 10 according to the embodiment of the present invention is configured to realize the matching connection between the dc-side connection port 1 and the dc plug, so that the first connection confirmation terminal CC2, the first auxiliary power terminal a + and the second auxiliary power terminal a "are arranged at the dc-side connection port 1, and the second connection confirmation terminal CC is arranged at the ac-side connection port 2, so that the ac-side connection port 2 and the vehicle ac-charging receptacle are matched, and at the same time, the first connection confirmation terminal CC2, the first auxiliary power terminal a + and the second auxiliary power terminal a" are considered in the embodiment of the present invention, and no actual signal or current is transmitted between the vehicle, so that the first connection confirmation terminal CC2, the second connection confirmation terminal CC, The first auxiliary power supply terminal A + and the second auxiliary power supply terminal A-are both in an idle state and are not connected with other ports.
A vehicle 20 of an embodiment of the invention includes, as shown in fig. 2, an in-vehicle ac charging receptacle 3, a second resistance unit R2, a third resistance unit R3, a second switch S2, and a vehicle control device 4.
In the embodiment, as shown in fig. 3, based on the vehicle-mounted ac charging socket 3 provided in the vehicle 20, when charging is performed using the ac charging apparatus, the vehicle-mounted ac charging socket 3 may be directly mated with an ac plug of the ac charging apparatus to implement the ac charging function of the vehicle.
As shown in fig. 2, the vehicle ac charging socket 3 in the embodiment of the present invention is also suitable for being connected to the charging adaptor 10 provided in the above embodiment in a matching manner, so as to implement physical connection between the vehicle side and the dc charging equipment side in a relay manner using the charging adaptor 20, where the charging adaptor 20 includes a dc side connection port 1 and an ac side connection port 2, the dc side connection port 1 is connected to the dc plug in a matching manner, and the ac side connection port 2 is connected to the vehicle ac charging socket 3 in a matching manner, so that the dc plug is indirectly connected to the vehicle ac charging socket 3, thereby implementing the dc charging function of the vehicle.
Therefore, according to the embodiment of the invention, based on the fact that the vehicle 20 is provided with the same charging port of the vehicle-mounted alternating current charging socket 3, two charging modes of direct current charging and alternating current charging can be selected according to requirements, so that for the vehicles which are not on the market, only the vehicle-mounted alternating current charging socket can be configured without modifying a vehicle body mould and a model, the cost is lower, for the vehicles which are on the market, only a distribution box is added to the vehicle and related circuits are modified, the overall modification amount of the vehicle is smaller, and the cost of the vehicle for adding a direct current charging function is reduced.
In the embodiment of the present invention, the vehicle-mounted ac charging outlet 3 includes a third ground terminal PE, a third connection confirmation terminal CC, and a third connection control confirmation terminal CP; a first end of the second resistor unit R2 is connected to the third ground terminal PE and the vehicle body ground, respectively, a second end of the second resistor unit R2 is connected to the third connection control confirmation terminal CP through the diode D1, a first end of the third resistor unit R3 connected in series with the second switch S2 is connected to the third ground terminal PE and the vehicle body ground, respectively, a second end of the third resistor unit R3 connected in series with the second switch S2 is connected to a second end of the second resistor unit R2, and the second switch S2 is a normally open switch; the first detection end of the vehicle control device 4 is connected to the third connection confirmation terminal CC, a first detection point c is provided between the first detection end and the third connection confirmation terminal CC, the second detection end of the vehicle control device 4 is connected to a connection line between the second end of the second resistance unit R2 and the diode D1, and a connection point is used as a second detection point D, and the vehicle control device 4 is configured to recognize the charge and discharge mode according to a resistance value between the first detection point c and the third ground terminal PE.
In the embodiment, because the vehicle is charged, two charging modes, namely a direct current charging device and an alternating current charging device, can be selected, and different charging strategies need to be adopted by the vehicle for the two charging modes, the vehicle 20 in the embodiment of the invention adopts a mode of detecting a resistor, sets different resistance values to match different charging and discharging modes to determine the charging and discharging mode of the vehicle, namely, obtains the resistance value between the first detection point c and the third grounding terminal PE by the vehicle control device 4 in the charging connection process, matches the detected resistance value with the corresponding charging and discharging mode, thereby determining that the vehicle is in the alternating current mode or the direct current mode, realizing the function of identifying the charging and discharging mode of the vehicle, facilitating the matching of the charging and discharging functions of the vehicle, and providing a reference for the direct current or alternating current charging and discharging control of the vehicle.
The following illustrates a process of identifying charging and discharging of a vehicle according to an embodiment of the present invention.
In some embodiments, the vehicle control device 4 is configured to, when recognizing the charge/discharge mode, determine that the charge/discharge mode is the ac charge/discharge mode if detecting that the resistance value between the first detection point c and the third ground terminal PE is the ac charge standard resistance value, or determine that the charge/discharge mode is the dc charge/discharge mode if detecting that the resistance value between the first detection point c and the third ground terminal PE is the dc charge standard resistance value.
In an embodiment, based on the vehicle-mounted ac charging socket 3 provided on the vehicle 20, when the ac charging device is used for charging, the vehicle-mounted ac charging socket 3 may be directly physically connected to an ac plug of the ac charging device to implement an ac charging function of the vehicle, for example, fig. 3 is a schematic diagram of a charging connection between the vehicle and the ac charging device, where terminals of the vehicle and the charging device are in butt joint: the first ac power supply signal output terminal L1 of the charging device end is butted with the first power supply signal input terminal L1 of the vehicle-mounted end, the first backup terminal L2 of the charging device end is butted with the first backup terminal L2 of the vehicle-mounted end, the second backup terminal L3 of the charging device end is butted with the second backup terminal L3 of the vehicle-mounted end, the second ac power supply signal output terminal N of the charging device end is butted with the second power supply signal output terminal N of the vehicle-mounted end, the ground terminal PE of the charging device end is butted with the third ground terminal PE of the vehicle-mounted end, the charging connection confirmation terminal CC of the charging device end is butted with the third connection confirmation terminal CC of the vehicle-mounted end, and the charging control terminal CP of the charging device end is butted with the third connection control confirmation terminal CP of the vehicle-mounted end. Therefore, the alternating current power supply signal is charged into the battery pack through the alternating current plug and the vehicle-mounted alternating current charging socket 3, and the alternating current charging function of the vehicle is realized. In this connection state, the resistance value between the first detection point c and the connection loop of the third ground terminal PE is used as the identification resistor, for example, as shown in fig. 3, based on the resistor R4, the resistor Rc and the normally closed switch S3 provided between the ground terminal PE and the charging connection confirmation terminal CC in the ac charging device, after the ac plug is connected to the ac charging receptacle 3, the vehicle control device 4 detects that the resistance value between the first detection point c and the third ground terminal PE is the sum of the resistor Rc and the second resistor unit R2, and determines that the charging/discharging mode is the ac charging mode.
In an embodiment, the vehicle may pre-store correspondence between different charge and discharge modes and different resistance values, as shown in table 1, wherein, for ac charging devices of different specifications, different charge and discharge modes are set in the vehicle to match with different resistance values, that is, different resistance values correspond to different rated currents, so when the vehicle is charging, according to the correspondence set in table 1, the charge and discharge mode of the current charging can be determined through the detected resistance value, thereby implementing a function of identifying the charge and discharge mode by the vehicle, and facilitating adjustment of the charging strategy by the vehicle.
TABLE 1 AC CHARGING MODE AND RESISTANCE VALUE
Figure BDA0002564180190000091
In the embodiment, as shown in table 1, the accuracy of the resistance value detected by the vehicle is ± 3% with respect to the corresponding relationship between the vehicle charge and discharge mode and the resistance value, wherein the magnitude of the resistance value may be modified or set according to actual conditions, and is not limited thereto.
And, when carrying on the direct current and charging, realize the relay connection of the alternating current charging socket 3 and direct current charging equipment on the vehicle based on the charging switching device 10 that the above-mentioned embodiment provides, as shown in fig. 2, there is a resistance R0' between internal ground terminal PE of direct current charging equipment and connection confirmation terminal CC2, but because the first connection confirmation terminal CC2 in the charging switching device 10 is in the vacant state, so distinguish from the way of discerning the alternating current charging mode, in the direct current charging process, the vehicle control device 4 obtains the resistance value between the first detection point c and the third ground terminal PE through the connection loop of the third connection control confirmation terminal CP; and based on that the resistor R0 and the normally closed switch S0 are disposed between the internal ground terminal PE of the dc charging device and the connection control confirmation terminal CC1, and the first resistor unit R1 and the first switch S1 are disposed between the internal second ground terminal PE2 and the second connection control confirmation terminal CP of the charging adapter device 10, during charging connection, the resistor R0 inside the dc charging device is connected in parallel with the first resistor unit R1, and the first resistor unit R1, the second resistor unit R2 inside the vehicle and the diode D1 are combined to form a total resistor as an identification resistor, so that the vehicle control device 4 confirms that the charging and discharging mode is the dc charging mode by obtaining a resistance value between the first detection point c and the third ground terminal PE. For example, fig. 4 shows a timing chart of the voltages at the detection points d and e and states of the switches S1, S2, and S0 when the charging adaptor 10 is used to implement dc charging, where in the unconnected state, the switch S0 is in the closed state, and S1 and S2 are in the open state; when the charging connection is confirmed, the switch S0 is opened first and then closed again, the switch S2 is still in the normally open state, and the switch S1 is kept in the closed state after the charging adapter 10 is inserted into the vehicle-mounted ac charging socket 3, and is opened again until the charging is completed.
It should be noted that fig. 2 and fig. 3 are only examples of charging connection according to the embodiment of the present invention, and the two charging modes according to the embodiment of the present invention use the same port connection, but are not limited to the connection manner of the docking port.
According to the vehicle 20 of the embodiment of the present invention, therefore, the charging relay apparatus 10 provided in the above-described embodiment can be connected in a mating manner based on the on-vehicle ac charging socket 3, so that the vehicle 20 can be directly connected with the AC charging device to realize the AC charging function, and can also be indirectly connected with the DC charging device to realize the DC charging function, and the vehicle body mould and the shape do not need to be modified, the cost is reduced, and, the vehicle 20 of the embodiment of the invention can realize the charging and discharging of alternating current or direct current based on the same charging port of the on-vehicle alternating current charging socket 3, the resistance value between the first detection point c and the third ground PE is acquired by the vehicle control device 4, the mode of detecting the resistor is adopted, different resistance values are matched with different charging and discharging modes to judge the current charging and discharging mode of the vehicle, the matching of the charging and discharging functions of the vehicle is facilitated, and reference is provided for the vehicle to carry out direct current or alternating current charging and discharging control.
In the embodiment, the vehicle 20 of the embodiment of the invention includes a hybrid vehicle, a pure electric vehicle, a fuel cell vehicle, and the like.
In the embodiment of the invention, when the direct current charging equipment is used for charging, direct current charging can be carried out only by transferring through the charging switching device 10, in the process, the charging switching device 10 is firstly connected with the vehicle-mounted alternating current charging socket 3 or is firstly connected with the direct current charging gun, and in the embodiment of the invention, the voltage value between the first detection point c acquired by the vehicle and the vehicle body ground PE can also change along with the difference of two connection sequences due to the difference of acquired resistance values under two connection working conditions.
Next, the change of the resistance value when the connection order of the charge transfer device 10 is different in the dc mode will be described in detail with reference to the drawings.
In some embodiments, the vehicle control device 4 is further configured to, when recognizing the charging and discharging mode, detect that the voltage value between the first detection point c and the vehicle body ground PE is increased from a zero value to the dc charging standard voltage value, and determine that the dc charging apparatus and the charging adaptor device 10 are connected to the vehicle-mounted ac charging receptacle 3. For example, as shown in fig. 5, the charging adaptor device 10 may be connected to the vehicle ac charging socket 3 and then connected to the dc plug, during the connection process, when the charging adaptor device 10 is not connected to the vehicle ac charging socket 3, the second detection end of the vehicle control device 4 recognizes that the voltage value between the second detection point d and the third ground terminal PE is 0V, and still detects 0V after the connection, further, after the charging adaptor device 10 is connected to the dc plug, the second detection end of the vehicle control device 4 recognizes that the voltage value between the first detection point c and the vehicle body ground PE is increased from 0V to 4V, so that the vehicle control device 4 recognizes that the change of the voltage value can determine that the connection between the dc charging device and the charging adaptor device 10 and the vehicle ac charging socket 3 is completed, and at this time, the change of the voltage at the detection point e in the dc charging device is shown in fig. 4, the voltage at the detection point e is 6V when the connection is not made, the normally closed switch S0 is turned off to 12V instantly, and is restored to 6V after being re-closed at S0, until the connection control confirmation terminal CP is turned on to 4V.
In some embodiments, as shown in fig. 6, the charging adapter device 10 may be connected to the dc plug first, and then connected to the vehicle ac charging socket 3. In this connection, when the ac charging device 10 is not connected to the dc plug, as shown in fig. 4, the voltage at the detection point e in the dc charging apparatus is 6V, since S1 is a normally open switch, S0 is a normally closed switch, after the charging relay 10 is inserted, the S0 switch is opened so that the voltage is pulled up to 12V, and the voltage at detection point e is pulled down to 6V again after the re-closing at S0, and when the DC plug and the charging switching device 10 are inserted into the vehicle-mounted AC charging socket 3, the connection control confirmation terminal CP is turned on in a loop manner, so that the voltage value at the detection point e is pulled down to 4V, namely, the vehicle control device 4 detects that the voltage value between the first detection point c and the vehicle body ground PE is 4V, it can be determined that the connection of the dc charging apparatus and the charging relay device 10 to the on-vehicle ac charging inlet 3 is completed, in which the on-vehicle control device 4 does not detect a process of a change in the voltage value.
In some embodiments, the vehicle control device 4 is configured to determine that the ac plug and the vehicle ac charging receptacle 3 are in the half-connected state when detecting that the resistance value between the first detection point c and the third ground terminal PE is the ac charging standard resistance value when identifying the charging mode. For example, as shown in fig. 3, when the vehicle is ac-charged, the vehicle control device 4 detects that the resistance value between the first detection point c and the third ground terminal PE is R3+ RC, which is the ac-charging standard resistance value, in a state where the ac plug is half-connected to the ac-charging receptacle 3 mounted on the vehicle. As shown in table 1, the resistance values corresponding to the ac charging modes of different rated currents are different, and the vehicle control device 4 adopts a corresponding charging control strategy according to the detected resistance value.
In a third embodiment of the present invention, a method for identifying a charging and discharging mode of a vehicle is provided, where the method includes steps S1-S2, as shown in fig. 7.
In step S1, a resistance value between the first detection point and the third ground terminal is obtained.
As shown in fig. 2 or 3, a first detection end of the vehicle control device is connected to the third connection confirmation terminal, a first detection point is provided between the first detection end and the third connection confirmation terminal, a second detection end of the vehicle control device is connected to a connection line between a second end of the second resistance unit and the diode, and the connection point is used as a second detection point.
In the embodiment, in order to match two charging modes of the vehicle, the method according to the embodiment of the present invention determines the charging mode by detecting the resistance, specifically, when the vehicle is charged, after the charging power supply access is confirmed through the third connection confirmation terminal, the vehicle control device detects the resistance value between the first detection point and the third ground terminal, and performs step S2. The charging power supply comprises a direct current charging device and an alternating current charging device.
In step S2, the charge/discharge mode is identified based on the resistance value between the first detection point and the third ground terminal.
In the embodiment, because the vehicle is charged, two charging modes of the direct current charging device and the alternating current charging device can be selected, and different charging strategies are required for the vehicle aiming at the two charging modes of the direct current charging and the alternating current charging, the method provided by the embodiment of the invention adopts a mode of detecting the resistance to judge the current charging and discharging mode of the vehicle, namely, the change of the resistance value between the first detection point and the third grounding end is detected in the charging connection process, and the corresponding charging and discharging mode is matched according to the obtained resistance value, so that the vehicle is conveniently determined to be in the alternating current mode or the direct current mode, the function of identifying the charging and discharging mode of the vehicle is realized, the matching of the charging and discharging functions of the vehicle is facilitated, and the reference is provided for the direct current or alternating current charging and discharging control of the vehicle.
For example, as shown in fig. 2, a connection diagram for performing dc charging on a vehicle is shown, wherein a first resistor unit in the charging adapter device, a second resistor unit in the vehicle, and a diode are combined into a total resistor to serve as an identification resistor for dc charging of the vehicle during charging connection, so that the vehicle control device determines that the charging mode is the dc charging mode by obtaining a resistance value between the first detection point and the third ground terminal. And as shown in fig. 3, the connection diagram of the vehicle performing dc charging is shown, wherein when the vehicle is connected to the charging, the resistance between the first detection point and the third ground connection loop is used as the identification resistance, that is, when the vehicle control device detects that the resistance between the first detection point and the third ground is the sum of the resistance Rc inside the ac charging device and the second resistance unit, the charging mode is determined to be the ac charging mode.
In an embodiment, in the method according to an embodiment of the present invention, when the vehicle is in a discharging state, the vehicle control device obtains a resistance value between the first detection point and the third ground during a discharging connection process, and further determines a discharging mode according to the detected resistance value, for example, a resistance identification unit is disposed in the electrical load, and when an ac discharging connection is performed, if the detected resistance value is a sum of resistance values of the resistance identification unit and the second resistance unit, it is determined that the charging and discharging mode is an ac mode; or when the direct current discharge connection is performed, the physical connection needs to be realized through the charge switching device, and the charge-discharge mode is determined to be the direct current mode by acquiring the resistance value between the first detection point and the third grounding end, so that the function of identifying the charge-discharge mode by the vehicle during the discharge is realized.
According to the method for identifying the vehicle charge and discharge mode, the resistance value between the first detection point and the third grounding end is acquired by the vehicle control device, namely, the mode of detecting the resistor is adopted, the charge and discharge mode is identified according to the detected resistance value, the matching of the charge and discharge functions of the vehicle is facilitated, and reference is provided for the vehicle to carry out direct current or alternating current charge and discharge control.
In some embodiments, identifying the charge-discharge mode according to the resistance value between the first detection point and the third ground terminal includes determining that the charge-discharge mode is the ac charge-discharge mode when detecting that the resistance value between the first detection point and the third ground terminal is the ac charge standard resistance value; or, when the resistance value between the first detection point and the third ground terminal is detected to be the dc charging standard resistance value, determining that the charging and discharging mode is the dc charging and discharging mode.
In some embodiments, in the dc charging and discharging mode, in the connection loop where the first detection point and the third ground terminal are located, a total resistance value of the first resistance unit of the charging adapter device, the resistance value of the second resistance unit of the vehicle, and the resistance value of the diode is a resistance value between the first detection point and the third ground terminal. For example, as shown in fig. 2, the resistor R0 inside the dc charging device is connected in parallel with the first resistor unit R1, and the first resistor unit R1, the second resistor unit R2 and the diode D1 inside the vehicle form a total resistor as an identification resistor, so that the vehicle control device determines that the charging/discharging mode is the dc charging mode by obtaining the resistance between the first detection point c and the third ground terminal PE.
In some embodiments, the method further includes determining that the dc charging device and the charging adaptor are connected to the vehicle-mounted ac charging socket when the voltage value between the second detection point and the vehicle body ground is detected to be increased from a zero value to the dc charging standard voltage value. For example, as shown in fig. 5, the charging adaptor device may be connected to the vehicle ac charging socket first, and then connected to the dc plug, during the connection process, when the charging adaptor device is not connected to the vehicle ac charging socket, the second detection end of the vehicle control device recognizes that the voltage value between the second detection point and the third ground terminal is 0V, and still detects 0V after the connection, further, when the charging adaptor device is connected to the dc plug, the second detection end of the vehicle control device recognizes that the voltage value between the first detection point c and the vehicle body ground PE is increased from 0V to 4V, so that the vehicle control device recognizes that the change of the voltage value can determine that the connection between the dc charging device and the vehicle ac charging socket is completed, and at this time, the voltage change of the detection point e in the dc charging device is shown in fig. 4, the voltage of the detection point e when the connection is not connected is 6V, the normally closed switch S0 is opened to 12V at the instant of opening, and is restored to 6V after being re-closed at S0, until the connection control confirmation terminal CP is pulled down to 4V.
In some embodiments, as shown in fig. 6, the charging adapter device may be connected to the dc plug first, and then connected to the vehicle ac charging socket. In the connection process, when the alternating current charging device is not connected with the direct current plug, the voltage of a detection point e in the direct current charging device is 6V, because S1 is a normally open switch and S0 is a normally closed switch, after the charging switching device is inserted, the S0 switch is disconnected, the voltage of the detection point e is pulled up to 12V, the voltage of the detection point e is pulled down to 6V again after S0 is closed again, and after the direct current plug and the charging switching device are inserted into the vehicle-mounted alternating current charging socket together, the connection control confirmation terminal CP circuit is conducted, the voltage value of the detection point e is pulled down to 4V, namely the vehicle control device detects that the voltage value between the first detection point c and the vehicle body ground PE is 4V, the connection completion of the direct current charging device and the charging switching device and the vehicle-mounted alternating current charging socket can be determined, and the vehicle-mounted control device cannot detect the process of voltage value change in the process.
In some embodiments, for identifying the charging mode according to the resistance value between the first detection point and the third ground terminal, the method further includes determining that the charging mode is the ac charging mode when detecting that the resistance value between the first detection point and the third ground terminal is the ac charging standard resistance value. As shown in fig. 3, when the vehicle is ac-charged, the vehicle control device detects that the resistance value between the first detection point and the third ground terminal is R3+ RC in a state where the ac plug is half-connected to the vehicle-mounted ac charging receptacle. As shown in table 1, the resistance values for ac charging at different rated currents are different, and the vehicle control device 4 adopts a corresponding charging control strategy according to the detected resistance value.
A method for identifying a charging mode of a vehicle according to an embodiment of the present invention will be described with reference to fig. 8.
For the dc charging mode, the process of vehicle identification is as follows.
In step S3, the vehicle control device detects that the voltage value between the second detection point d and the third ground terminal PE is 0.
In step S4, the vehicle control device confirms that the charging electric door is open and sets the vehicle in a non-travel state.
In step S5, the vehicle control device detects that the voltage value at the second detection point d, i.e., the voltage value between the first detection point c and the vehicle body ground PE, is increased from 0V to 4V.
In step S6, the vehicle control device recognizes that "dc plug + charge relay device" is inserted.
In step S7, a dc charging strategy is initiated.
For the ac charging mode, the identification process of the vehicle is as follows.
In step S8, the vehicle control device detects that the resistance value at the first detection point is 3.52k Ω or 3.40k Ω or 3.38k Ω or 3.3k Ω.
In step S9, the vehicle control device recognizes that an ac plug is inserted.
In step S10, the ac charging strategy is initiated.
Therefore, according to the vehicle of the embodiment of the present invention, based on the charging adaptor provided in the above embodiment, the vehicle ac charging socket may be directly connected to the ac charging device to realize the ac charging function, or may be indirectly connected to the dc charging device to realize the dc charging function, and the vehicle body mold and the shape need not be modified to reduce the cost, and the method for identifying the vehicle charging/discharging mode adopted in the embodiment of the present invention may be implemented by obtaining the resistance value between the first detection point and the third ground terminal during the charging/discharging connection process when the vehicle is charged, and determining the charging/discharging mode according to the resistance value, that is, the method of the embodiment of the present invention may be implemented by performing ac or dc charging/discharging based on the same charging port of the vehicle ac charging socket, setting different resistance values to match different charging/discharging modes, and enabling the vehicle to determine whether the ac mode or the dc mode according to the detected resistance value during the charging connection, therefore, the function of identifying the charge-discharge mode of the vehicle is realized, and the matching of the charge-discharge function of the vehicle is facilitated.
In the description of this specification, any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of custom logic functions or processes, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A charge transfer device, comprising:
a dc side connection port adapted to be connected to a dc charging device, the dc side connection port including a dc power supply positive terminal, a dc power supply negative terminal, a first ground terminal, and a first connection control confirmation terminal;
the vehicle-mounted AC charging socket comprises an AC side connecting port, a DC side connecting port and a control signal generating port, wherein the AC side connecting port is suitable for being connected with a vehicle-mounted AC charging socket and comprises a first AC terminal, a neutral terminal, a second grounding terminal and a second connection control confirmation terminal;
the positive terminal of the direct-current power supply is electrically connected with the first alternating-current terminal, the negative terminal of the direct-current power supply is electrically connected with the neutral terminal, the first ground terminal is electrically connected with the second ground terminal, a first node is arranged on a connecting line of the first ground terminal and the second ground terminal, the first connection control confirmation terminal is electrically connected with the second connection control confirmation terminal, and a second node is arranged on a connecting line of the first connection control confirmation terminal and the second connection control confirmation terminal;
the first end of the first resistance unit after being connected with the first switch in series is connected with the first node, and the second end of the first resistance unit after being connected with the first switch in series is connected with the second node;
the first switch is a normally open switch, and when the alternating current side connecting port and the vehicle-mounted alternating current charging socket are in a matched connection state, the first switch is switched to a closed state.
2. The charge adapter device according to claim 1,
the direct current side connection port further includes a first communication terminal, a second communication terminal, a first connection confirmation terminal, a first auxiliary power supply terminal, and a second auxiliary power supply terminal;
the AC side connection port further comprises a second phase AC terminal, a third phase AC terminal and a second connection confirmation terminal;
wherein the first communication terminal is electrically connected to the second phase ac terminal, the second communication terminal is electrically connected to the third phase ac terminal, and the first connection confirmation terminal, the second connection confirmation terminal, the first auxiliary power supply terminal, and the second auxiliary power supply terminal are left vacant.
3. A vehicle, characterized by comprising:
an on-vehicle ac charging socket adapted to be mated with the charging adaptor device of claim 1 or 2, the on-vehicle ac charging socket including a third ground terminal, a third connection confirmation terminal, and a third connection control confirmation terminal;
a second resistance unit having a first end connected to the third ground terminal and the vehicle body ground, and a second end connected to the third connection control confirmation terminal through a diode;
the first end of the third resistor unit, which is connected with the second switch in series, is connected with the third grounding terminal and the vehicle body ground respectively, the second end of the third resistor unit, which is connected with the second switch in series, is connected with the second end of the second resistor unit, and the second switch is a normally open switch;
and a second detection end of the vehicle control device is connected to a connection line between the second end of the second resistance unit and the diode, and a connection point of the second detection end of the vehicle control device is used as a second detection point, and is used for identifying a charge and discharge mode according to a resistance value between the first detection point and the third grounding end.
4. The vehicle according to claim 3, wherein the vehicle control device is configured to, when recognizing a charge/discharge mode, determine that the charge/discharge mode is the ac charge/discharge mode if detecting that the resistance value between the first detection point and the third ground is the ac charge standard resistance value, or determine that the charge/discharge mode is the dc charge/discharge mode if detecting that the resistance value between the first detection point and the third ground is the dc charge standard resistance value.
5. The vehicle according to claim 4, wherein in the dc charging and discharging mode, a total resistance value of a first resistance unit of the charging adaptor device, a resistance value of a second resistance unit of the vehicle, and a resistance value of the diode in a connection loop where the first detection point and the third ground terminal are located is a resistance value between the first detection point and the third ground terminal.
6. The vehicle according to claim 5, wherein the vehicle control device is further configured to determine that the dc charging device and the charging adaptor device are connected to the vehicle-mounted ac charging receptacle when detecting that the voltage value between the second detection point and the vehicle body ground is pulled up from a zero value to a dc charging standard voltage value when the charging/discharging mode is recognized.
7. A method of identifying a vehicle charge-discharge pattern for use with the vehicle of claim 3, the method comprising:
acquiring a resistance value between the first detection point and a third grounding end;
and identifying a charge-discharge mode according to the resistance value between the first detection point and the third grounding end.
8. The method of identifying a charge-discharge mode of a vehicle according to claim 7, wherein identifying a charge-discharge mode according to the resistance value between the first detection point and the third ground terminal includes:
determining that the charge-discharge mode is an alternating current charge-discharge mode when detecting that the resistance value between the first detection point and the third grounding end is an alternating current charge standard resistance value;
or, when the resistance value between the first detection point and the third ground terminal is detected to be a dc charging standard resistance value, determining that the charging and discharging mode is the dc charging and discharging mode.
9. The method according to claim 8, wherein in the dc charge/discharge mode, a total resistance value of the first resistor unit of the charge transfer device, the resistance value of the second resistor unit of the vehicle, and the resistance value of the diode in a loop where the first detection point and the third ground terminal are located is a resistance value between the first detection point and the third ground terminal.
10. The method of identifying a vehicle charge-discharge mode according to claim 9, further comprising:
and when the voltage value between the second detection point and the vehicle body ground is detected to be increased from a zero value to a direct current charging standard voltage value, the direct current charging equipment and the charging switching device are determined to be connected with the vehicle-mounted alternating current charging socket.
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