CN108790877B - Electric vehicle quick charging method of direct current charging station - Google Patents
Electric vehicle quick charging method of direct current charging station Download PDFInfo
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- CN108790877B CN108790877B CN201810589050.6A CN201810589050A CN108790877B CN 108790877 B CN108790877 B CN 108790877B CN 201810589050 A CN201810589050 A CN 201810589050A CN 108790877 B CN108790877 B CN 108790877B
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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
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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
- 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
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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
- 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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- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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Abstract
The invention provides a quick electric vehicle charging method of a direct current charging station, and belongs to the technical field of electric vehicle charging. The electric vehicle quick charging method of the direct current charging station comprises the following steps: a. selecting a charging vehicle type by background service or an upper computer; b. the charging robot inserts a charging gun into an electric automobile interface, and the system calculates the SOC of the battery according to the sampled battery voltage; c. the pre-charging circuit works; d. the PWM rectifier starts to work, the power factor is more than 99%, and the bus voltage is ensured to be at a set value; e. the PWM chopper starts to work, the charging current quickly reaches a set value, and meanwhile, the battery voltage is monitored; f. the system reminds the charging completion through a UI interface or other modes. The invention not only can conveniently and effectively realize the butt joint of the charging gun and the electric automobile interface, but also has the advantage of realizing quick charging on the premise of ensuring the charging safety.
Description
Technical Field
The invention belongs to the technical field of electric vehicle charging, and relates to a quick electric vehicle charging method of a direct current charging station.
Background
In the face of the current increasingly severe energy crisis, the demand for petroleum is continuously increased, the supply is insufficient and the automobile holding capacity is continuously increased, the automobile industry development of all countries faces the constraints of energy and environment, and the development of energy-saving and environment-friendly electric automobiles becomes the sustainable development choice of the automobile industry. The worry and the worry of consumers about the shorter cruising ability of the electric automobile are further aggravated due to the incompleteness of the current infrastructure charging facilities, the dilemma that the electric automobile is difficult to charge and even cannot be charged is faced, the purchase willingness of the consumers to the electric automobile is lower than that of a fuel vehicle, and the anxiety degree of the consumers becomes an important psychological barrier for preventing the large-scale popularization of the electric automobile.
At present, common electric vehicle charging facilities include charging piles, charging stations and battery charging stations. For the three modes, an appropriate charging device needs to be selected and matched. Charging power of the charging pile is small, generally 2-10 kW, and the charging pile is mainly connected into a power grid through an existing distribution transformer and a circuit and can only be used for slow charging. International developed countries such as the united states, japan, and the united kingdom have built their own charging facilities, and mainly include charging stations and charging piles. Therefore, the charging station and the charging pile are combined in a main mode of charging the electric automobile, the charging station is used for rapidly charging and replacing the battery, and the charging pile is convenient for the residents to freely charge at night at a low speed. Through retrieval, as disclosed in chinese patent literature, a method for fast charging an electric vehicle [ patent No.: ZL 201510836569.6; authorization notice number: CN105291875A ]. The method for rapidly charging the electric automobile comprises the following steps: the vehicle control unit receives a quick charging wake-up signal sent by the quick charging pile, controls the vehicle to be powered on, and the battery management system enters a charging response stage; in the charging response stage, the response information interaction with the quick charging pile is used for confirming that the charging response is normal, and the battery management system enters the charging parameter configuration stage; in the charging parameter configuration stage, the charging parameter configuration is confirmed to be normal through the interaction with the parameter information of the rapid charging pile, and the battery management system enters the charging stage; in the charging stage, the charging information interaction with the rapid charging pile is used for confirming that the charging process is normal, and the battery management system enters the final stage of charging; in the final stage of charging, the battery management system confirms that charging is completed or charging fails through final information interaction with the rapid charging pile.
However, the problem that the charging speed of the electric automobile is slow is not well solved by the quick charging method for the electric automobile, and meanwhile, the quick charging method for the electric automobile by adopting the direct-current charging cabinet is not involved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a quick electric vehicle charging method of a direct current charging station.
The purpose of the invention can be realized by the following technical scheme:
a method for rapidly charging an electric vehicle of a direct current charging station is characterized by comprising the following steps:
a. a background service or an upper computer selects a charging vehicle type, the background identifies the battery type according to the big database, determines the charging current and voltage and sets a charging program;
b. the charging robot inserts a charging gun into an interface of the electric automobile, the system calculates the SOC of the battery according to the sampled voltage of the battery, analyzes the whole quick charging time and feeds the whole quick charging time back to a user;
c. the pre-charging circuit works, the bus capacitor is charged through the bypass resistor, the relay is closed when the voltage reaches 450V, and the bus capacitor is continuously charged through the relay;
d. the PWM rectifier starts to work, the power factor is more than 99% through the sampled power grid voltage and the sampled power grid side current, and the bus voltage is ensured to be at a set value;
e. the PWM chopper starts to work, the charging current quickly reaches a set value, meanwhile, the voltage of the battery is monitored, when the voltage of the battery is too high for a short time, the battery is discharged by pulse current and is continuously charged below a protection value, and the operation is repeated until the electric quantity of the battery is charged to 80%;
f. the system reminds the charging completion through a UI interface or other modes.
According to the method, before charging, a charging mode can be selected according to the condition of the battery of the electric automobile, and the charging time is fed back; in the charging process, pre-charging is realized through a bypass resistor and a relay, and the sampled grid voltage, grid side current, PWM rectifier and PWM chopper ensure that power factors can realize the stability of voltage in the charging process and monitor the voltage condition of the battery, so that the quick charging is realized on the premise of ensuring the charging safety.
Preferably, in step a, the charging current is in the range of 20A-100A, and the charging voltage is in the range of 300V-550V.
Preferably, in the step b, a first mounting groove and a second mounting groove are formed in the charging gun, a first convex sliding groove is formed in the inner bottom wall of the first mounting groove, a first sliding block matched with the first convex sliding groove is arranged in the first convex sliding groove in a sliding mode, a first rack is fixed on the first sliding block, a first rotating shaft is rotatably arranged in the first mounting groove, a first turnover rod is fixed on the first rotating shaft, a plurality of first teeth meshed with the first rack are formed in one end of the first turnover rod, a first butt joint column is fixed at the other end of the first turnover rod, and a first clamping ball is fixed at the other end of the first butt joint column; and a second convex sliding groove is formed in the inner bottom wall of the second mounting groove, a second sliding block matched with the second convex sliding groove is arranged in the second convex sliding groove in a sliding manner, a second rack is fixed on the second sliding block, a second rotating shaft is arranged in the second mounting groove in a rotating manner, a second turnover rod is fixed on the second rotating shaft, one end of the second turnover rod is provided with a second plurality of teeth meshed with the second rack, the other end of the second turnover rod is fixed with a second butt joint column, and a second clamping ball is fixed at the other end of the second butt joint column.
Slider one, slider two can make reciprocating motion along protruding type spout one, protruding type spout two respectively to drive rack one, rack two and make reciprocating motion along protruding type spout one, protruding type spout two, through rack one and the meshing of tooth one on the upset pole one, the meshing of tooth two on rack two and the upset pole two, thereby realize upset pole one and use pivot one to overturn as the center, upset pole two uses pivot two to overturn as the center.
Preferably, in the step b, the electric vehicle interface is provided with a first butt joint hole and a second butt joint hole, a first spring and a second spring are fixed on inner bottom walls of the first butt joint hole and the second butt joint hole respectively, a limiting device capable of locking the first clamping ball and the second clamping ball in the first butt joint hole and the second butt joint hole respectively is further arranged in the electric vehicle interface, and the limiting device comprises a lead screw, a first motor and a limiting frame.
Before charging, the first sliding block and the second sliding block move towards the electric automobile interface to drive the first turnover rod and the second rotating rod to turn over, so that the first clamping ball on the first butt joint column faces the first butt joint hole, the second clamping ball on the second butt joint column faces the second butt joint hole, the charging gun is moved to enable the first clamping ball to enter the first butt joint hole and the second clamping ball to enter the second butt joint hole, and an auxiliary butt joint effect is achieved before the charging gun is inserted into the electric automobile interface, so that the interface abrasion caused by direct butt joint of the charging gun and the electric automobile interface can be avoided, errors in the butt joint process are reduced, the efficiency is improved, and the first clamping ball and the second clamping ball are respectively limited in the first butt joint hole and the second butt joint hole through a limiting device; after charging is completed, in the same way, the limiting device relieves the limitation of the first clamping ball and the second clamping ball in the first butt joint hole and the second butt joint hole respectively, and the first sliding block and the second sliding block move back to the direction of the electric automobile interface, so that the charging gun is separated from the electric automobile interface.
The first spring and the second spring respectively play a role in buffering the first clamping ball entering the first butt joint hole and the second clamping ball entering the second butt joint hole.
As preferred, mounting groove three has been seted up to the electric automobile interface, spacing is located mounting groove three, and spacing includes diaphragm, gag lever post one, gag lever post two, set up on the electric automobile interface and make mounting groove three and the communicating spacing hole one of butt joint hole, the one end of gag lever post one is fixed on the diaphragm, and the gag lever post other end is worn to establish in spacing hole one, and the length of gag lever post one is greater than the degree of depth of spacing hole one, and the one end of gag lever post two is fixed on the diaphragm, and the other end of gag lever post two is worn to establish in spacing hole two, and the length of gag lever post two is greater than the degree of depth of spacing hole two.
Preferably, the electric vehicle interface is provided with a fourth mounting groove, the electric vehicle interface is provided with a third mounting groove and a fourth mounting groove communicated through hole, the first motor is fixed on one side wall of the fourth mounting groove, one output shaft of the motor faces the through hole, one end of the lead screw is fixed at the end part of the output shaft of the first motor, the other end of the lead screw penetrates out of the through hole and is rotatably arranged on one side wall of the third mounting groove, the transverse plate is provided with a mounting hole, a bearing is fixed on the inner wall of the mounting hole, a nut is fixed on the inner ring of the bearing, and the nut is in threaded connection with one end, located.
The first motor drives the lead screw to rotate forwards, the transverse plate moves towards the first motor direction through the nut and the bearing, so that one end of the first limiting rod penetrates through the first butt joint hole and abuts against the first butt joint column, one end of the second limiting rod penetrates through the second butt joint hole and abuts against the second butt joint column, the first clamping ball and the second clamping ball are limited in the first butt joint hole and the second butt joint hole, and the function of preventing the charging gun from being separated from the electric automobile interface can be achieved; similarly, the motor drives the screw rod to rotate reversely, so that the transverse plate is moved towards the motor, one end of the first limiting rod is separated from the first butt joint hole, one end of the second limiting rod is separated from the second butt joint hole, and the first clamping ball and the second clamping ball can freely enter and exit the first butt joint hole and the second butt joint hole.
Preferably, the first limiting rod is sleeved with a third spring, the second limiting rod is sleeved with a fourth spring, and one ends of the third spring and the fourth spring are fixed on the transverse plate.
Preferably, the diameter of the first clamping ball is larger than that of the first butt joint column, the diameter of the second clamping ball is larger than that of the second butt joint column, and the diameters of the first butt joint hole and the second butt joint hole are equal to those of the first clamping ball and the second clamping ball respectively.
Preferably, a first guide rod and a second guide rod are fixed on the first sliding block and the second sliding block respectively, the charging gun is provided with an inner cavity, the other one of the first guide rod and the second guide rod penetrates through the inner cavity of the charging gun, a connecting rod is fixed between the first guide rod and the second guide rod, and a pushing structure capable of driving the connecting rod to reciprocate is arranged in the inner cavity of the charging gun.
Preferably, the pushing structure comprises a second motor, a first transmission shaft and a second transmission shaft are rotatably arranged in an inner cavity of the charging gun through a bearing seat, a first roller and a second roller are respectively fixed on the first transmission shaft and the second transmission shaft, the second motor is fixed on the side wall of the inner cavity of the charging gun, an output shaft of the first motor is fixed with the first roller, a belt is sleeved on the first roller and the second roller, a connecting block is fixed on the connecting rod, and the connecting block is fixed with the belt on one side.
The motor II drives the roller I to rotate forwards, the connecting block on the belt on one side moves towards the roller I through the roller II, the guide rod I and the guide rod II can be pushed out through the connecting rod, and the sliding block I and the sliding block II move towards the interface of the electric automobile; in a similar way, the motor II drives the roller I to rotate reversely, the connecting block on the belt on one side moves towards the direction of the roller II through the roller II, the guide rod I and the guide rod II can be retracted through the connecting rod, and the sliding block I and the sliding block II move back to the direction of the interface of the electric automobile.
Compared with the prior art, the electric vehicle quick charging method of the direct current charging station has the following advantages:
1. according to the method, before charging, a charging mode can be selected according to the condition of the battery of the electric automobile, and the charging time is fed back; in the charging process, pre-charging is realized through a bypass resistor and a relay, and the sampled grid voltage, grid side current and PWM chopper ensure that power factors can realize the stability of voltage in the charging process and monitor the voltage condition of a battery, so that quick charging is realized on the premise of ensuring charging safety.
2. Before charging, the first sliding block and the second sliding block move towards the interface direction of the electric automobile to drive the first turnover rod and the second rotating rod to turn over, the charging gun is moved to enable the first clamping ball to enter the first butt joint hole and the second clamping ball to enter the second butt joint hole, interface abrasion caused by direct butt joint of the charging gun and the interface of the electric automobile can be avoided, errors in the butt joint process are reduced, and efficiency is improved; after charging is finished, the first sliding block and the second sliding block move back to the direction of the electric automobile interface in the same way, so that the charging gun is separated from the electric automobile interface.
3. The screw rod is driven to rotate forwards by the motor, the transverse plate moves towards the direction of the motor through the nut and the bearing, so that one end of the first limiting rod penetrates into the first butt joint hole and abuts against the first butt joint column, one end of the second limiting rod penetrates into the second butt joint hole and abuts against the second butt joint column, the first clamping ball and the second clamping ball are limited in the first butt joint hole and the second butt joint hole, and the charging gun can be prevented from being separated from an electric automobile interface; similarly, the motor drives the screw rod to rotate reversely, so that the first clamping ball and the second clamping ball can freely enter and exit the first butt joint hole and the second butt joint hole.
4. The first motor drives the first roller to rotate forwards, the connecting block on the belt on one side moves towards the first roller through the second roller, the first guide rod and the second guide rod can be pushed out through the connecting rod, and the first sliding block and the second sliding block move towards the interface of the electric automobile; in a similar way, the first motor drives the first roller to rotate reversely, so that the first sliding block and the second sliding block move back to the direction of the interface of the electric automobile.
Drawings
FIG. 1 is a schematic perspective view of an electric vehicle interface and a charging gun according to the present invention;
FIG. 2 is a partial sectional structural view of a charging gun according to the present invention;
FIG. 3 is a schematic view of a half-section of a charging gun according to the present invention;
FIG. 4 is a partial cross-sectional view of an electric vehicle interface according to the present invention;
fig. 5 is a partial sectional structural schematic diagram of an electric vehicle interface according to the present invention.
In the figure, 1, a charging gun; 2. a first mounting groove; 3. a second mounting groove; 4. a first sliding block; 5. a first rack; 6. a first turning rod; 7. butting the first column; 8. blocking the ball I; 9. a second sliding block; 10. a second rack; 11. a second overturning rod; 12. a second butting column; 13. a second ball is clamped; 14. a first guide rod; 15. a second guide rod; 16. a second motor; 17. a first roller; 18. a second roller; 19. a belt; 20. connecting blocks; 21. a connecting rod; 22. a first butt joint hole; 23. a second butt joint hole; 24. a third mounting groove; 25. a transverse plate; 26. a first limiting rod; 27. a second limiting rod; 28. a fourth mounting groove; 29. a first motor; 30. a lead screw; 31. a through hole; 32. an electric vehicle interface.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
A method for rapidly charging an electric vehicle of a direct current charging station is characterized by comprising the following steps:
a. the background service or the upper computer selects the charging vehicle type, the background identifies the battery type according to the big database, determines the charging current and voltage, the charging current range is 20A-100A, the charging voltage range is 300V-550V, and sets the charging program;
b. the charging robot inserts the charging gun 1 into the interface 32 of the electric automobile, the system calculates the SOC of the battery according to the sampled voltage of the battery, analyzes the whole quick charging time and feeds the whole quick charging time back to a user;
c. the pre-charging circuit works, the bus capacitor is charged through the bypass resistor, the relay is closed when the voltage reaches 450V, and the bus capacitor is continuously charged through the relay;
d. the PWM rectifier starts to work, the power factor is more than 99% through the sampled power grid voltage and the sampled power grid side current, and the bus voltage is ensured to be at a set value;
e. the PWM chopper starts to work, the charging current quickly reaches a set value, meanwhile, the voltage of the battery is monitored, when the voltage of the battery is too high for a short time, the battery is discharged by pulse current and is continuously charged below a protection value, and the operation is repeated until the electric quantity of the battery is charged to 80%;
f. the system reminds the charging completion through a UI interface or other modes.
According to the method, before charging, a charging mode can be selected according to the condition of the battery of the electric automobile, and the charging time is fed back; in the charging process, pre-charging is realized through a bypass resistor and a relay, and the sampled grid voltage, grid side current, PWM rectifier and PWM chopper ensure that power factors can realize the stability of voltage in the charging process and monitor the voltage condition of the battery, so that the quick charging is realized on the premise of ensuring the charging safety.
As shown in fig. 1 and 3, in step b, a first mounting groove 2 and a second mounting groove 3 are formed in a charging gun 1, a first convex sliding groove is formed in the inner bottom wall of the first mounting groove 2, a first sliding block 4 matched with the first convex sliding groove is arranged in the first convex sliding groove in a sliding manner, a first rack 5 is fixed on the first sliding block 4, a first rotating shaft is rotatably arranged in the first mounting groove 2, a first turning rod 6 is fixed on the first rotating shaft, a plurality of first teeth meshed with the first rack 5 are formed at one end of the first turning rod 6, a first docking post 7 is fixed at the other end of the first turning rod 6, and a first blocking ball 8 is fixed at the other end of the first docking post 7; seted up protruding type spout two on the interior diapire of mounting groove two 3, it is provided with two 9 of slider that match with protruding type spout two to slide in protruding type spout two, be fixed with rack two 10 on the slider two 9, and the second 3 internal rotations of mounting groove are equipped with pivot two, be fixed with upset bar two 11 on the pivot two, a plurality of tooth two that mesh with rack two 10 are seted up to the one end of upset bar two 11, the other end of upset bar two 11 is fixed with docking post two 12, the other end of docking post two 12 is fixed with calorie ball two 13.
Slider one 4, slider two 9 can be along protruding type spout one, protruding type spout two respectively do reciprocating motion to drive rack one 5, rack two 10 along protruding type spout one, protruding type spout two do reciprocating motion, through the meshing of tooth one on rack one 5 and the upset pole one 6, the meshing of tooth two on rack two 10 and the upset pole two 11, thereby realize upset pole one 6 and use pivot one to overturn as the center, upset pole two 11 uses pivot two to overturn as the center.
As shown in fig. 2, a first guide rod 14 and a second guide rod 15 are fixed on the first slider 4 and the second slider 9 respectively, the charging gun 1 has an inner cavity, the other one of the first guide rod 14 and the second guide rod 15 is arranged in the inner cavity of the charging gun 1 in a penetrating manner, a connecting rod 21 is fixed between the first guide rod 14 and the second guide rod 15, and a pushing structure capable of driving the connecting rod 21 to reciprocate is arranged in the inner cavity of the charging gun 1. The pushing structure comprises a second motor 16, a first transmission shaft and a second transmission shaft are rotatably arranged in the inner cavity of the charging gun 1 through a bearing seat, a first roller 17 and a second roller 18 are respectively fixed on the first transmission shaft and the second transmission shaft, the second motor 16 is fixed on the side wall of the inner cavity of the charging gun 1, an output shaft of a first motor 29 is fixed with the first roller 17, a belt 19 is sleeved on the first roller 17 and the second roller 18, a connecting block 20 is fixed on the connecting rod 21, and the connecting block 20 is fixed with the belt 19 on one side. The second motor 16 drives the first roller 17 to rotate forwards, the second roller 18 enables the connecting block 20 on the belt 19 on one side to move towards the first roller 17, the first guide rod 14 and the second guide rod 15 can be pushed out through the connecting rod 21, and the first sliding block 4 and the second sliding block 9 move towards the electric automobile interface 32; similarly, the second motor 16 drives the first roller 17 to rotate reversely, the second roller 18 enables the connecting block 20 on the belt 19 on one side to move towards the second roller 18, the first guide rod 14 and the second guide rod 15 can be retracted through the connecting rod 21, and the first slider 4 and the second slider 9 can move back to the electric vehicle interface 32.
As shown in fig. 4 and 5, in the step b, the electric vehicle interface 32 is provided with a first docking hole 22 and a second docking hole 23, a first spring and a second spring are respectively fixed on inner bottom walls of the first docking hole 22 and the second docking hole 23, a limiting device capable of locking the first ball retainer 8 and the second ball retainer 13 in the first docking hole 22 and the second docking hole 23 is further arranged in the electric vehicle interface 32, and the limiting device includes a lead screw 30, a first motor 29, and a limiting frame. The first spring and the second spring respectively play a role in buffering the first clamping ball 8 entering the first butting hole 22 and the second clamping ball 13 entering the second butting hole 23.
Three 24 mounting grooves have been seted up to electric automobile interface 32, the spacing is located three 24 mounting grooves, the spacing includes diaphragm 25, gag lever post 26, gag lever post two 27, set up on the electric automobile interface 32 and make three 24 mounting grooves and the communicating spacing hole one of butt joint hole 22, the one end of gag lever post 26 is fixed on diaphragm 25, gag lever post 26 other end is worn to establish in spacing hole one, and the length of gag lever post 26 is greater than the degree of depth of spacing hole one, the one end of gag lever post two 27 is fixed on diaphragm 25, the other end of gag lever post two 27 is worn to establish in spacing hole two, and the length of gag lever post two 27 is greater than the degree of depth of spacing hole two. The diameter of the first clamping ball 8 is larger than that of the first butting column 7, the diameter of the second clamping ball 13 is larger than that of the second butting column 12, and the diameters of the first butting hole 22 and the second butting hole 23 are respectively equal to those of the first clamping ball 8 and the second clamping ball 13.
Four 28 mounting grooves have been seted up to electric automobile interface 32, seted up on the electric automobile interface 32 and made the communicating through-hole 31 of three 24 and four 28 mounting grooves of mounting groove, motor 29 is fixed on a lateral wall of four 28 mounting grooves, the output shaft of motor 29 is towards through-hole 31, the output shaft tip at motor 29 is fixed to the one end of lead screw 30, the other end of lead screw 30 is worn out through-hole 31 and is rotated and set up on a lateral wall of three 24 mounting grooves, the mounting hole has been seted up on the diaphragm 25, be fixed with the bearing on the inner wall of mounting hole, it is fixed with the nut to circle on the bearing, nut threaded connection is in the one end that lead screw 30 is. The first limiting rod 26 is sleeved with a third spring, the second limiting rod 27 is sleeved with a fourth spring, and one ends of the third spring and the fourth spring are fixed on the transverse plate 25.
The first motor 29 drives the screw rod 30 to rotate forwards, the transverse plate 25 moves towards the first motor 29 through the nut and the bearing, so that one end of the first limiting rod 26 penetrates through the first butt joint hole 22 and abuts against the first butt joint column 7, one end of the second limiting rod 27 penetrates through the second butt joint hole 23 and abuts against the second butt joint column 12, the first clamping ball 8 and the second clamping ball 13 are limited in the first butt joint hole 22 and the second butt joint hole 23, and the charging gun 1 can be prevented from being separated from the electric automobile interface 32; similarly, the first motor 29 drives the screw rod 30 to rotate reversely, so that the transverse plate 25 is moved towards the first motor 29, and thus one end of the first limiting rod 26 is separated from the first butting hole 22, and one end of the second limiting rod 27 is separated from the second butting hole 23, so that the first ball retainer 8 and the second ball retainer 13 can freely enter and exit from the first butting hole 22 and the second butting hole 23.
In summary, before charging, the motor two 16 drives the roller one 17 to rotate forward, the roller two 18 moves the connecting block 20 on the belt 19 to the roller one 17, the guide rod one 14 and the guide rod two 15 can be pushed out through the connecting rod 21, the slider one 4 and the slider two 9 move to the electric vehicle interface 32, so as to drive the turning rod one 6 and the turning rod two to turn over, the ball clamping one 8 on the docking column one 7 faces the docking hole one 22, the ball clamping two 13 on the docking column two 12 faces the docking hole two 23, the charging gun 1 is moved, the ball clamping one 8 enters the docking hole one 22, the ball clamping two 13 enters the docking hole two 23, and the auxiliary docking effect is achieved before the charging gun 1 is inserted into the electric vehicle interface 32, which not only can avoid the interface abrasion caused by the direct docking of the charging gun 1 and the electric vehicle interface 32, but also reduces the error in the docking process and improves the efficiency, the first clamping ball 8 and the second clamping ball 13 are limited in the first butt joint hole 22 and the second butt joint hole 23 respectively through the limiting device, the first motor 29 drives the screw rod 30 to rotate forwards, the transverse plate 25 moves towards the first motor 29 through the nut and the bearing, one end of the first limiting rod 26 penetrates through the first butt joint hole 22 and abuts against the first butt joint column 7, one end of the second limiting rod 27 penetrates through the second butt joint hole 23 and abuts against the second butt joint column 12, the first clamping ball 8 and the second clamping ball 13 are limited in the first butt joint hole 22 and the second butt joint hole 23, and the effect of avoiding the charging gun 1 from being separated from the electric automobile interface 32 can be achieved.
After charging is completed, similarly, the first motor 29 drives the screw rod 30 to rotate reversely, so that the transverse plate 25 is moved towards the first motor 29, one end of the first limiting rod 26 is separated from the first butt joint hole 22, one end of the second limiting rod 27 is separated from the second butt joint hole 23, the first ball clamping device 8 and the second ball clamping device 13 can freely enter and exit from the first butt joint hole 22 and the second butt joint hole 23, the limit of the first ball clamping device 8 and the second ball clamping device 13 in the first butt joint hole 22 and the second butt joint hole 23 is relieved, the second motor 16 drives the first roller 17 to rotate reversely, the second roller 18 is used for enabling the connecting block 20 on the belt 19 on one side to move towards the second roller 18, the first guide rod 14 and the second guide rod 15 can be retracted through the connecting rod 21, the first slider 4 and the second slider 9 can move towards the direction of the electric vehicle interface 32, and the charging gun 1 is separated from the electric vehicle.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although more 1, charging guns are used herein; 2. a first mounting groove; 3. a second mounting groove; 4. a first sliding block; 5. a first rack; 6. a first turning rod; 7. butting the first column; 8. blocking the ball I; 9. a second sliding block; 10. a second rack; 11. a second overturning rod; 12. a second butting column; 13. a second ball is clamped; 14. a first guide rod; 15. a second guide rod; 16. a second motor; 17. a first roller; 18. a second roller; 19. a belt; 20. connecting blocks; 21. a connecting rod; 22. a first butt joint hole; 23. a second butt joint hole; 24. a third mounting groove; 25. a transverse plate; 26. a first limiting rod; 27. a second limiting rod; 28. a fourth mounting groove; 29. a first motor; 30. a lead screw; 31. a through hole; 32. electric vehicle interface, etc., without excluding the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. A method for rapidly charging an electric vehicle of a direct current charging station is characterized by comprising the following steps:
a. a background service or an upper computer selects a charging vehicle type, the background identifies the battery type according to the big database, determines the charging current and voltage and sets a charging program;
b. the charging robot inserts a charging gun into an electric automobile interface, the charging gun is provided with a first mounting groove and a second mounting groove, a first convex sliding groove is formed in the inner bottom wall of the first mounting groove, a first sliding block matched with the first convex sliding groove is arranged in the first convex sliding groove in a sliding mode, a first rack is fixed on the first sliding block, a first rotating shaft is arranged in the first mounting groove in a rotating mode, a first turnover rod is fixed on the first rotating shaft, a plurality of first teeth meshed with the first rack are formed in one end of the first turnover rod, a first butt joint column is fixed at the other end of the first turnover rod, a first clamping ball is fixed at the other end of the first butt joint column, a second convex sliding groove is formed in the inner bottom wall of the second mounting groove, a second sliding block matched with the second convex sliding groove is arranged in the second convex sliding groove in a sliding mode, a second rack is fixed on the second sliding, a plurality of teeth II meshed with the rack II are arranged at one end of the turnover rod II, a butt joint column II is fixed at the other end of the turnover rod II, a clamping ball II is fixed at the other end of the butt joint column II, a butt joint hole I and a butt joint hole II are arranged on an electric automobile interface, a spring I and a spring II are respectively fixed on the inner bottom walls of the butt joint hole I and the butt joint hole II, a limiting device is further arranged in the electric automobile interface and comprises a lead screw, a motor I and a limiting frame, the system calculates the SOC of the battery according to the sampled battery voltage, analyzes the whole quick charging time and feeds the SOC back the SOC to a user;
c. the pre-charging circuit works, the bus capacitor is charged through the bypass resistor, the relay is closed when the voltage reaches 450V, and the bus capacitor is continuously charged through the relay;
d. the PWM rectifier starts to work, the power factor is more than 99% through the sampled power grid voltage and the sampled power grid side current, and the bus voltage is ensured to be at a set value;
e. the PWM chopper starts to work, the charging current quickly reaches a set value, meanwhile, the voltage of the battery is monitored, when the voltage of the battery is too high for a short time, the battery is discharged by pulse current and is continuously charged below a protection value, and the operation is repeated until the electric quantity of the battery is charged to 80%;
f. the system reminds the charging completion through a UI interface or other modes.
2. The method for rapidly charging an electric vehicle at a direct current charging station according to claim 1, wherein in step a, the charging current is in a range of 20A-100A, and the charging voltage is in a range of 300V-550V.
3. The method for rapidly charging the electric vehicle of the direct current charging station according to claim 1, wherein a third mounting groove is formed in the electric vehicle interface, the limiting frame is located in the third mounting groove and comprises a transverse plate, a first limiting rod and a second limiting rod, a first limiting hole which enables the third mounting groove to be communicated with the first butt-joint hole is formed in the electric vehicle interface, one end of the first limiting rod is fixed on the transverse plate, the other end of the first limiting rod penetrates through the first limiting hole, the length of the first limiting rod is larger than the depth of the first limiting hole, one end of the second limiting rod is fixed on the transverse plate, the other end of the second limiting rod penetrates through the second limiting hole, and the length of the second limiting rod is larger than the depth of the second limiting hole.
4. The method for rapidly charging the electric vehicle of the direct current charging station according to claim 3, wherein a mounting groove four is formed in the electric vehicle interface, a through hole is formed in the electric vehicle interface, the mounting groove three is communicated with the mounting groove four, the first motor is fixed to one side wall of the mounting groove four, an output shaft of the first motor faces the through hole, one end of the lead screw is fixed to the end portion of the output shaft of the first motor, the other end of the lead screw penetrates through the through hole and is rotatably arranged on one side wall of the mounting groove three, a mounting hole is formed in the transverse plate, a bearing is fixed to the inner wall of the mounting hole, a nut is fixed to an inner ring of the bearing, and the nut is in threaded connection with.
5. The method for rapidly charging the electric vehicle of the direct current charging station according to claim 3 or 4, wherein a third spring is sleeved on the first limiting rod, a fourth spring is sleeved on the second limiting rod, and one ends of the third spring and the fourth spring are fixed on the transverse plate.
6. The method of claim 1, wherein the diameter of the first ball is larger than that of the first docking post, the diameter of the second ball is larger than that of the second docking post, and the first docking hole and the second docking hole are respectively equal to the first ball and the second ball.
7. The method for rapidly charging the electric vehicle at the direct current charging station according to claim 1, wherein a first guide rod and a second guide rod are respectively fixed on the first slide block and the second slide block, the charging gun has an inner cavity, the other of the first guide rod and the second guide rod is arranged in the inner cavity of the charging gun in a penetrating manner, a connecting rod is fixed between the first guide rod and the second guide rod, and a pushing structure capable of driving the connecting rod to reciprocate is arranged in the inner cavity of the charging gun.
8. The method according to claim 7, wherein the pushing structure comprises a second motor, the first transmission shaft and the second transmission shaft are rotatably disposed in the inner cavity of the charging gun through a bearing seat, the first transmission shaft and the second transmission shaft are respectively fixed with a first roller and a second roller, the second motor is fixed on a side wall of the inner cavity of the charging gun, an output shaft of the first motor is fixed with the first roller, the first roller and the second roller are sleeved with a belt, a connecting block is fixed on the connecting rod, and the connecting block is fixed with a side belt.
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| CN109649196B (en) * | 2018-11-23 | 2020-07-14 | 衢州学院 | Universal charging interface for electric automobile |
| CN114312408B (en) * | 2021-12-29 | 2024-01-30 | 江西众一智慧科技有限公司 | Self-adaptive quick-charging and conventional charging method and system for different batteries |
| CN114537179B (en) * | 2022-04-24 | 2023-07-18 | 南京存阳电力发展有限公司 | Wiring-free preassembled integrated non-motor vehicle charging terminal equipment |
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| CN201051675Y (en) * | 2007-02-15 | 2008-04-23 | 青岛澳柯玛电动科技有限公司 | Balance charging maintenance system for electric vehicle battery |
| US20130221918A1 (en) * | 2010-04-26 | 2013-08-29 | Proterra Inc | Fast charge stations for electric vehicles in areas with limited power availabilty |
| CN102185367A (en) * | 2011-04-19 | 2011-09-14 | 成都秦川科技发展有限公司 | Pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of electric vehicle |
| CN104253471B (en) * | 2013-06-28 | 2017-02-22 | 比亚迪股份有限公司 | Charging system and charging control method of electric vehicle |
| CN103779950B (en) * | 2013-12-31 | 2018-01-12 | 科世达（上海）管理有限公司 | A kind of charging device and method |
| CN106058980A (en) * | 2016-06-21 | 2016-10-26 | 北京中智信息技术股份有限公司 | Automatic voltage detection intelligent charging pile |
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