CN113922470A - External power supply system of electric automobile - Google Patents
External power supply system of electric automobile Download PDFInfo
- Publication number
- CN113922470A CN113922470A CN202111348827.8A CN202111348827A CN113922470A CN 113922470 A CN113922470 A CN 113922470A CN 202111348827 A CN202111348827 A CN 202111348827A CN 113922470 A CN113922470 A CN 113922470A
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- Prior art keywords
- vehicle
- power supply
- mounted charger
- battery pack
- control unit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
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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
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- 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
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
Abstract
The invention provides an external power supply system of an electric automobile, which comprises: the system comprises a battery pack, a vehicle-mounted charger, a vehicle control unit, an inverter alternating current gun and an integrated power strip; the input end of the vehicle-mounted charger is electrically connected with the output end of the battery pack, the output end of the vehicle-mounted charger is electrically connected with a vehicle power supply socket, and the control end of the vehicle-mounted charger is in signal connection with the vehicle control unit; one end of the inversion alternating current gun is detachably inserted into the vehicle power supply insertion port, and the other end of the inversion alternating current gun is electrically connected with the integrated power strip; the vehicle control unit is connected with the battery pack through a CAN bus so as to acquire the battery electric quantity of the battery pack in real time, and the vehicle-mounted charger is subjected to inversion control according to the battery electric quantity so as to supply power to the outside. The invention can improve the convenience of external power supply of the electric automobile and increase the intelligence of external power supply of the automobile.
Description
Technical Field
The invention relates to the technical field of electric automobile charging and discharging equipment, in particular to an external power supply system of an electric automobile.
Background
Currently, the automobile industry is accelerating to intelligent electrification transition, and new energy automobiles, particularly electric automobiles, are moving to thousands of households. At present, the self-driving travel demand of people is gradually increased, and the outdoor power supply demand of the vehicle is also increased, but the prior vehicle external discharge device (V2L) has the following defects: (1) the household power supply plug for external output is 16A or 10A, which cannot be compatible with each other, and a customer needs to be equipped with a patch panel separately. (2) Because the vehicle contravariant has the requirement to battery SOC, SOC is less than 30% usually, the vehicle no longer supports the contravariant function, and present external discharge device (V2L) does not have the electric quantity to show, and the user can't observe the battery electric quantity to the external power supply of vehicle can't rationally be arranged. Therefore, how to supply power to the outside of the vehicle conveniently and controllably has important research significance.
Disclosure of Invention
The invention provides an external power supply system of an electric automobile, which solves the problems that the conventional external power supply of the electric automobile has inconvenient interfaces and cannot accurately control power supply, can improve the convenience of external power supply of the electric automobile, and increases the intelligence of external power supply of the automobile.
In order to achieve the above purpose, the invention provides the following technical scheme:
an external power supply system for an electric vehicle, comprising: the system comprises a battery pack, a vehicle-mounted charger, a vehicle control unit, an inverter alternating current gun and an integrated power strip;
the input end of the vehicle-mounted charger is electrically connected with the output end of the battery pack, the output end of the vehicle-mounted charger is electrically connected with a vehicle power supply socket, and the control end of the vehicle-mounted charger is in signal connection with the vehicle control unit;
one end of the inversion alternating current gun is detachably inserted into the vehicle power supply insertion port, and the other end of the inversion alternating current gun is electrically connected with the integrated power strip;
the vehicle control unit is connected with the battery pack through a CAN bus so as to acquire the battery electric quantity of the battery pack in real time, and the vehicle-mounted charger is subjected to inversion control according to the battery electric quantity so as to supply power to the outside.
Preferably, the method further comprises the following steps: a high voltage distribution box;
the high-voltage distribution box is connected in series between the battery pack and the vehicle-mounted charger, is in signal connection with the vehicle control unit and is used for controlling the connection or disconnection of the battery pack to the electric connection of the vehicle-mounted charger.
Preferably, the integrated socket is provided with a 16A plug, a 10A plug, a USB interface, an LED lamp and a button switch;
the button switch is used for controlling the connection or disconnection of the electric connection between the 16A plug or the 10A plug and the inverter alternating current gun;
the LED lamp is used for lighting when the integrated socket is electrically connected with the inverter alternating current gun.
Preferably, the vehicle-mounted charger is provided with a DCAC inverter and a detection control module;
the DCDC inverter is electrically connected with the battery pack through the high-voltage distribution box so as to convert the direct current output by the battery pack into alternating current;
the detection control module is respectively in signal connection with the vehicle control unit and the vehicle power supply interface, and is used for detecting a CC signal of the vehicle power supply interface and controlling the closing of a CP switch according to a discharge instruction output by the vehicle control unit;
and the vehicle control unit outputs an external discharge instruction according to the CC signal, so that the vehicle-mounted charger supplies power to the outside.
Preferably, the inverter ac gun is provided with a light emitting diode, and the light emitting diode is turned on when the inverter ac gun and the vehicle power supply socket are in a complete plugging state and the CP switch is turned on.
Preferably, when the inverter alternating current gun is completely inserted into the vehicle power supply socket, the CP switch is connected in series with the light emitting diode, and the detection control module controls the CP switch to be turned on or off according to a discharge instruction sent by the vehicle control unit, so as to realize the flash control of the light emitting diode.
Preferably, the inverter control is performed on the vehicle-mounted charger according to the electric quantity of the battery to supply power to the outside, including:
and the vehicle control unit controls the detection control module to send PWM waves to control the flashing frequency and the cycle period of the light-emitting diode according to the battery electric quantity SOC, and controls the light-emitting diode to display red when the battery electric quantity SOC is less than 30%.
Preferably, a first relay and a second relay are arranged in the high-voltage distribution box;
the first relay is connected between the positive electrode of the battery pack and the positive electrode input end of the DCAC inverter in series, and the control end of the first relay is in signal connection with the whole vehicle controller;
the second relay is connected between the negative electrode of the battery pack and the negative electrode input end of the DCAC inverter in series, and the control end of the second relay is in signal connection with the whole vehicle controller;
the vehicle control unit controls the connection or disconnection of the electrical connection between the battery pack and the DCAC inverter through the connection or disconnection of the first relay and the second relay.
Preferably, the method further comprises the following steps: a storage battery;
the storage battery is electrically connected with the vehicle-mounted charger to provide a 12V power supply for the vehicle-mounted charger.
The invention provides an external power supply system of an electric automobile, which is characterized in that a vehicle controller controls a vehicle-mounted charger to convert direct current output by a battery pack into alternating current, and a vehicle power supply socket and an integrated socket are electrically connected through an inverter alternating current gun to supply power to the outside.
Drawings
In order to more clearly describe the specific embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic diagram of an external power supply system of an electric vehicle provided by the invention.
Fig. 2 is a schematic connection diagram of an inverter ac gun according to the present invention.
Detailed Description
In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.
Aiming at the problem that the conventional electric automobile cannot supply power to the outside conveniently, the invention provides an electric automobile external power supply system.
As shown in fig. 1 and 2, an external power supply system for an electric vehicle includes: the vehicle-mounted battery pack comprises a battery pack, a vehicle-mounted charger, a vehicle control unit, an inverter alternating current gun and an integrated power strip. The input end of the vehicle-mounted charger is electrically connected with the output end of the battery pack, the output end of the vehicle-mounted charger is electrically connected with the vehicle power supply socket, and the control end of the vehicle-mounted charger is in signal connection with the vehicle control unit. One end of the inversion alternating current gun is detachably inserted into the vehicle power supply insertion port, and the other end of the inversion alternating current gun is electrically connected with the integrated power strip. The vehicle control unit is connected with the battery pack through a CAN bus so as to acquire the battery electric quantity of the battery pack in real time, and the vehicle-mounted charger is subjected to inversion control according to the battery electric quantity so as to supply power to the outside.
Specifically, the vehicle control unit controls the vehicle-mounted charger to supply power to the outside according to the electric quantity of the battery, enables a customer to quickly and conveniently know the electric quantity condition of the battery of the vehicle through different display schemes of the external discharge inversion alternating current gun, provides basis for the customer to discharge the electricity to the outside in reasonable use, and enables the customer to use the vehicle-mounted power supply reasonably. One end of the inversion alternating current gun is electrically connected with the vehicle-mounted charger through the vehicle power supply socket, the other end of the inversion alternating current gun is electrically connected with the integrated socket, and a user can supply power to a power load through the integrated socket. The system can solve the problems that the interface is inconvenient to supply power externally and the power supply cannot be controlled accurately in the existing electric automobile, can improve the convenience of external power supply of the electric automobile, and increases the intelligence of external power supply of the automobile.
The system further comprises: a high voltage distribution box; the high-voltage distribution box is connected in series between the battery pack and the vehicle-mounted charger, is in signal connection with the vehicle control unit and is used for controlling the connection or disconnection of the battery pack to the electric connection of the vehicle-mounted charger.
As shown in FIG. 2, the integrated socket is provided with a 16A plug, a 10A plug, a USB interface, an LED lamp and a button switch. The button switch is used for controlling the connection or disconnection of the electric connection between the 16A plug or the 10A plug and the inverter alternating current gun. The LED lamp is used for lighting when the integrated socket is electrically connected with the inverter alternating current gun.
In practical application, as shown in fig. 2, the inverter ac gun 1 matches with the national standard ac gun of the national standard charging socket and passes through 3 × 2.5mm2The cable 2 is connected with an integrated socket 3 with 16A/10A/USB, wherein the integrated socket is provided with an LED lamp, a 16A plug, a 10A plug, a USB interface and a button switch, and the whole sealing requirement of IP54 is met.
As shown in fig. 1, the vehicle-mounted charger is provided with a DCAC inverter and a detection control module. The DCDC inverter is electrically connected with the battery pack through the high-voltage distribution box so as to convert the direct current output by the battery pack into alternating current. The detection control module is in signal connection with the vehicle control unit and the vehicle power supply interface respectively and is used for detecting a CC signal of the vehicle power supply interface and controlling the closing of the CP switch according to a discharge instruction output by the vehicle control unit. And the vehicle control unit outputs an external discharge instruction according to the CC signal, so that the vehicle-mounted charger supplies power to the outside.
Further, the inversion alternating current gun is provided with a light emitting diode, and the light emitting diode is turned on when the inversion alternating current gun and the vehicle power supply socket are in a complete plug-in state and the CP switch is closed.
Further, when the inverter alternating current gun is completely inserted into the vehicle power supply socket, the CP switch is connected with the light-emitting diode in series, and the detection control module controls the conduction or the disconnection of the CP switch according to a discharge instruction sent by the vehicle control unit so as to realize the flashing control of the light-emitting diode.
Further, the according to the battery electric quantity to carry out contravariant control to on-vehicle machine that charges to supply power outward, include:
and the vehicle control unit controls the detection control module to send PWM waves to control the flashing frequency and the cycle period of the light-emitting diode according to the battery electric quantity SOC, and controls the light-emitting diode to display red when the battery electric quantity SOC is less than 30%.
In practical application, the light-emitting diode is arranged in the inverter alternating current gun, and the light-emitting diode is not lighted when the inverter alternating current gun is not completely inserted into the vehicle power supply interface; when the inverter alternating current gun is completely inserted into the vehicle power supply interface and begins to discharge outwards, the light emitting diode is lightened and displays white.
Further, if the SOC of the battery is less than 30%, the LED lamp is red and always on. If the fact that the vehicle can normally discharge to the outside is detected, the light emitting diode is white, different flicker frequencies are set according to different battery electric quantity SOC, if the SOC reaches 40%, the light emitting diode continuously flickers for 4 times (0.5S1 times), 2S is extinguished, and 4S 1 cycles are carried out; the SOC reaches 50%, the flash is continuously carried out for 5 times (0.5S1 time), 2S is extinguished, and 4.5S 1 cycles are carried out; and so on until the SOC reaches 90%.
After the external discharge is completed, the customer takes off the inverter alternating current gun and the light emitting diode is turned off. In the normal external discharge process, the light emitting diode can adopt a flashing mode, and the lamplight is in a flashing state which is a flashing state and is in a cyclic reciprocating state. The flicker frequency is controlled by the vehicle-mounted charger to pull in the CP switch in the vehicle-mounted charger so as to control the light emitting diode.
As shown in fig. 1, a first relay and a second relay are provided in the high voltage distribution box. The first relay is connected between the positive electrode of the battery pack and the positive electrode input end of the DCAC inverter in series, and the control end of the first relay is in signal connection with the whole vehicle controller. The second relay is connected between the negative electrode of the battery pack and the negative electrode input end of the DCAC inverter in series, and the control end of the second relay is in signal connection with the whole vehicle controller. The vehicle control unit controls the connection or disconnection of the electrical connection between the battery pack and the DCAC inverter through the connection or disconnection of the first relay and the second relay.
The system further comprises: a storage battery; the storage battery is electrically connected with the vehicle-mounted charger to provide a 12V power supply for the vehicle-mounted charger.
In practical application, as shown in fig. 1 and 2, after an external discharge device (V2L) is inserted into a charging socket, a CC is connected with a PE, an electronic lock is locked, a resistance (2k Ω) of the CC to the PE is detected, it is determined that the maximum discharge current is 16A, an internal switch of a vehicle-mounted charger is closed, the vehicle-mounted charger knows the electric quantity condition of a battery pack by receiving a VCU message of a vehicle control unit, and when the electric quantity SOC of the battery pack is less than 30%, the vehicle-mounted charger does not invert and only lights up LED lamps located on an integrated socket; when the SOC of the battery pack is more than 30%, the vehicle-mounted charger starts inversion and lights the light emitting diode on the national standard alternating current gun. In addition, the vehicle-mounted charger controls the flickering times of the diode by controlling the switch of the vehicle-mounted charger to be attracted according to the condition of the electric quantity of the battery pack, so that the condition of the electric quantity of the battery pack of the vehicle discharging to the outside is displayed through the flickering times of the indicator lamp.
The national standard alternating current gun comprises a plug base, a gun shell, a power terminal, a signal terminal, a resistor, a diode and the like which meet the requirements of GB/T20234-2015, wherein the power terminal is a single-phase live wire, a zero wire and a ground wire, the signal terminal is CC (connection confirmation) and CP (control guidance), the resistance of CC to PE is 2k omega, and the resistance of CP to PE is 1k omega.
The BMS (battery management system) in the battery pack of the power supply vehicle collects the cell single voltage of the battery pack, the collected cell single voltage information is transmitted to a VCU (vehicle control unit) through a CAN (controller area network), the VCU of the vehicle control unit judges the SOC of the battery pack of the power supply vehicle according to the cell single voltage, and forms a command (in a digital form) with the processed SOC information and sends the command to a charger, so that the on-off frequency of a switch on a CP (programmable logic controller) circuit of the external inversion of the charger is controlled, and the light emitting frequency of a national standard alternating current gun light emitting diode is controlled.
The electric quantity SOC of the battery is more than 30 percent, the requirement of external discharge is met, and the 12V storage battery supplies power to the vehicle-mounted charger to enable the vehicle-mounted charger to be in an activated state. When a national standard alternating current gun switch of an external discharging device (V2L) is pressed down and a national standard alternating current socket of a power supply vehicle is inserted, a charging gun is released (the charging gun switch is switched from off to on), a charger CC of the power supply vehicle forms a loop for PE, after a charger detection control device detects resistance of CC to PE (the CC is switched off and is infinite before the PE is switched off), the charger judges whether the charging gun is a charging gun or an inversion gun according to the resistance of CC to PE, when the resistance is 2K omega, the inversion gun is judged, and when the resistance is 1.5K omega (a gun) or 680 omega (a gun), the charging gun is judged; when the charging machine is judged to be an inversion gun, the charger detection and control device sends a CC connection signal to the VCU, after the VCU receives the signal, on one hand, the high-voltage distribution box is controlled to close a live wire switch and a zero wire switch, on the other hand, a processed SOC information forming instruction (in a digital form) is sent to the charger, a CP switch and a closing frequency are closed inside the charging machine, and the charger begins to invert and output 220V 16A 50Hz alternating current.
Therefore, the invention provides an external power supply system of an electric automobile, wherein a vehicle controller controls a vehicle-mounted charger to convert direct current output by a battery pack into alternating current, and a vehicle power supply socket and an integrated socket are electrically connected through an inverter alternating current gun to supply power to the outside.
The construction, features and functions of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings, and all equivalent embodiments modified or modified by the spirit and scope of the present invention should be protected without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides an electric automobile external power supply system which characterized in that includes: the system comprises a battery pack, a vehicle-mounted charger, a vehicle control unit, an inverter alternating current gun and an integrated power strip;
the input end of the vehicle-mounted charger is electrically connected with the output end of the battery pack, the output end of the vehicle-mounted charger is electrically connected with a vehicle power supply socket, and the control end of the vehicle-mounted charger is in signal connection with the vehicle control unit;
one end of the inversion alternating current gun is detachably inserted into the vehicle power supply insertion port, and the other end of the inversion alternating current gun is electrically connected with the integrated power strip;
the vehicle control unit is connected with the battery pack through a CAN bus so as to acquire the battery electric quantity of the battery pack in real time, and the vehicle-mounted charger is subjected to inversion control according to the battery electric quantity so as to supply power to the outside.
2. The external power supply system for electric vehicles according to claim 1, further comprising: a high voltage distribution box;
the high-voltage distribution box is connected in series between the battery pack and the vehicle-mounted charger, is in signal connection with the vehicle control unit and is used for controlling the connection or disconnection of the battery pack to the electric connection of the vehicle-mounted charger.
3. The external power supply system for the electric automobile according to claim 2, wherein the integrated socket is provided with a 16A plug, a 10A plug, a USB interface, an LED lamp and a button switch;
the button switch is used for controlling the connection or disconnection of the electric connection between the 16A plug or the 10A plug and the inverter alternating current gun;
the LED lamp is used for lighting when the integrated socket is electrically connected with the inverter alternating current gun.
4. The external power supply system of the electric automobile according to claim 3, wherein the vehicle-mounted charger is provided with a DCAC inverter and a detection control module;
the DCDC inverter is electrically connected with the battery pack through the high-voltage distribution box so as to convert the direct current output by the battery pack into alternating current;
the detection control module is respectively in signal connection with the vehicle control unit and the vehicle power supply interface, and is used for detecting a CC signal of the vehicle power supply interface and controlling the closing of a CP switch according to a discharge instruction output by the vehicle control unit;
and the vehicle control unit outputs an external discharge instruction according to the CC signal, so that the vehicle-mounted charger supplies power to the outside.
5. The external power supply system for electric vehicles according to claim 4, wherein the inverter AC gun is provided with a light emitting diode, and the light emitting diode is turned on when the inverter AC gun is completely plugged into the vehicle power supply socket and the CP switch is turned on.
6. The external power supply system of the electric automobile according to claim 5, wherein when the ac inverter gun is completely plugged into the vehicle power supply jack, the CP switch is connected in series with the light emitting diode, and the detection control module controls the CP switch to be turned on or off according to a discharge command sent by the vehicle control unit, so as to control the flashing of the light emitting diode.
7. The external power supply system of the electric vehicle according to claim 6, wherein the inverting control of the vehicle-mounted charger according to the battery power is performed to supply power to the outside, and the system comprises:
and the vehicle control unit controls the detection control module to send PWM waves to control the flashing frequency and the cycle period of the light-emitting diode according to the battery electric quantity SOC, and controls the light-emitting diode to display red when the battery electric quantity SOC is less than 30%.
8. The external power supply system for electric vehicles according to claim 7, wherein a first relay and a second relay are provided in the high voltage distribution box;
the first relay is connected between the positive electrode of the battery pack and the positive electrode input end of the DCAC inverter in series, and the control end of the first relay is in signal connection with the whole vehicle controller;
the second relay is connected between the negative electrode of the battery pack and the negative electrode input end of the DCAC inverter in series, and the control end of the second relay is in signal connection with the whole vehicle controller;
the vehicle control unit controls the connection or disconnection of the electrical connection between the battery pack and the DCAC inverter through the connection or disconnection of the first relay and the second relay.
9. The external power supply system for electric vehicles according to claim 8, further comprising: a storage battery;
the storage battery is electrically connected with the vehicle-mounted charger to provide a 12V power supply for the vehicle-mounted charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111348827.8A CN113922470A (en) | 2021-11-15 | 2021-11-15 | External power supply system of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111348827.8A CN113922470A (en) | 2021-11-15 | 2021-11-15 | External power supply system of electric automobile |
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| CN113922470A true CN113922470A (en) | 2022-01-11 |
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| CN202111348827.8A Pending CN113922470A (en) | 2021-11-15 | 2021-11-15 | External power supply system of electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114435186A (en) * | 2022-01-23 | 2022-05-06 | 重庆长安汽车股份有限公司 | Control method and system for indicating discharge state by using charging port lamp and automobile |
| CN116581614A (en) * | 2023-07-10 | 2023-08-11 | 小米汽车科技有限公司 | Power supply interface device, power supply method and vehicle |
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