CN109217024B - Direct current fills electric pile with protect function charges - Google Patents
Direct current fills electric pile with protect function charges Download PDFInfo
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- CN109217024B CN109217024B CN201811104773.9A CN201811104773A CN109217024B CN 109217024 B CN109217024 B CN 109217024B CN 201811104773 A CN201811104773 A CN 201811104773A CN 109217024 B CN109217024 B CN 109217024B
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
- H01R13/635—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only by mechanical pressure, e.g. spring force
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for 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
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a direct-current charging pile with a charging protection function, wherein the input end of a charging pile body is connected with a three-phase power supply; the charging gun head is connected with the output end of the charging pile body, a cylindrical inserting end is arranged on the charging gun head in a protruding mode, a through hole is formed in the center of the cylindrical body of the inserting end in an axial penetrating mode, a plurality of first channels are distributed on the periphery of the through hole, and at least one guide block is arranged on the side walls of the through hole on the left side and the right side in a protruding mode respectively; a pair of half-section bodies are movably arranged in the through hole, a guide hole corresponding to the guide block is formed in the peripheral side wall of the half-section body, and the guide block is inserted into the guide hole, so that the half-section bodies are radially telescopic in the through hole; the periphery of the half-section body is provided with a plurality of second channels corresponding to the first channels, and the first channels are in butt joint with the second channels to form conductive plug holes for plugging the automobile charging pin interfaces. The invention solves the technical problem of insufficient safety guarantee of electricity consumption of the charging pile.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a direct-current charging pile with a charging protection function.
Background
The charging pile has the function similar to that of an oiling machine in a gas station, can be fixed on the ground or a wall, is installed in public buildings (public buildings, malls, public parking lots and the like) and residential community parking lots or charging stations, and can charge electric automobiles of various types according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile. The charging pile generally provides two charging modes of conventional charging and quick charging, people can use a specific charging card to swipe the card on a man-machine interaction operation interface provided by the charging pile for corresponding charging mode, charging time, charge data printing and other operations, and a charging pile display screen can display data of charging quantity, charge, charging time and the like.
The charging pile is generally divided into a direct-current charging pile and an alternating-current charging pile, wherein the vehicle-mounted charger is required to be carried when the alternating-current charging pile is used, and the power of the vehicle-mounted charger of the electric automobile is generally smaller, so that the alternating-current charging pile cannot realize rapid charging. Specifically, the ac charging pile has the following characteristics: the power supply device is fixedly arranged outside the electric automobile and connected with an alternating current power grid to provide alternating current power for the vehicle-mounted charger of the electric automobile. Only provides power output, has no charging function and plays a role in controlling a power supply. The direct current charging pile can provide enough power, the output voltage and current adjustment range is large, and the requirement of quick charging can be realized. Specifically, the direct current fills electric pile has following characteristics: the power supply device is mainly installed in a large charging station, is connected with a power grid in a three-phase four-wire system mode, can provide sufficient electric power, and has a large output voltage and current adjustment range.
From the above, the advantages of the direct current charging pile are more obvious, the output power is higher, and the charging process is faster. However, since the output power of the direct current charging pile is high, the charging current is high especially in the initial stage of charging the automobile battery. In the prior art, the effect of the electric protection during the charging process of the vehicle is limited, so that the battery pack and the charging pile are difficult to protect when the electric fault occurs.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
The invention aims to provide a direct current charging pile with a charging protection function, wherein a gun jumping mechanism is arranged on a charging gun head connected with the charging pile, and when overcurrent or overvoltage occurs, a battery pack and the charging pile can be separated through the gun jumping mechanism, so that the direct current charging pile has an effective protection function, and the power utilization guarantee function of the charging pile is improved. The invention solves the technical problem of insufficient safety guarantee of electricity consumption of the charging pile.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a direct current charging pile having a charging protection function, comprising:
the input end of the charging pile body is connected with a three-phase power supply;
the charging gun head is connected with the output end of the charging pile body, a cylindrical inserting end is arranged on the charging gun head in a protruding mode, a through hole is formed in the center of the cylindrical body of the inserting end in an axial penetrating mode, a plurality of first channels are distributed on the periphery of the through hole, and the length direction of each first channel is consistent with the axial direction of the inserting end;
at least one guide block is arranged on the side wall of the through hole on the left side and the right side in a protruding mode, and the guide blocks are positioned on the side wall of the through hole between two adjacent first channels; a pair of half-section bodies are movably arranged in the through hole, the outer peripheral side wall of each half-section body is matched with the left inner side wall or the right inner side wall of the through hole, a guide hole corresponding to the guide block is formed in the outer peripheral side wall of each half-section body, and the guide blocks are inserted into the guide holes in a plugging manner, so that the half-section bodies are radially telescopic in the through hole;
the periphery of the half-section body is provided with a plurality of second channels corresponding to the first channels, and when the peripheral side wall of the half-section body is attached to the left and right side walls of the through hole, the first channels are in butt joint with the second channels to form conductive plug holes for plugging the automobile charging pin interfaces;
at least one of the inner side ends of the first channels is provided with an elastic piece, and the distance between the elastic piece and the outer side end of the through hole is smaller than the length of the contact pin in the charging interface.
Preferably, the charging gun head is internally provided with a containing cavity, the through hole is communicated with the containing cavity, the periphery of the first channel is provided with a conducting layer, the plug-in end and the half-section body are insulators, the inner side end of the first channel extends to the containing cavity, the extending end of the first channel is externally connected with a conducting connecting wire, and the conducting connecting wire is connected with the output end of the charging pile body along the charging gun head.
Preferably, the inner side wall of the through hole is in an arc surface structure, the conductive plug holes on the charging gun head are distributed along the outer side wall of the through hole, the outer side wall of the half-section body is provided with an arc surface structure matched with the left side wall and the right side wall of the through hole, and the outer side wall of the half-section body is selectively attached to the inner side wall of the through hole; the first channel and the second channel are in a semicircular structure, and the first channel corresponds to the second channel one by one.
Preferably, the cross section direction of the half-section body is parallel to the axial direction of the plug-in end, a reserved gap is arranged between the cross sections of the half-section body at the left side and the right side, and the maximum distance of the reserved gap is not more than the diameter of the first channel.
Preferably, the length of the guide block and the depth of the guide hole are not smaller than the radius of the first channel, and the half-section body is sleeved on the guide block through the guide hole, so that the half-section body is radially telescopic in the left-right direction.
Preferably, a first spring is arranged on the side wall of the through hole on one side of the guide block in a protruding mode, and the first spring is clamped between the side wall of the through hole and the side wall of the periphery of the half-section body.
Preferably, a limiting block is arranged at the inner side end of the first channel, a second spring is arranged in the first channel at the outer side of the limiting block, and the length of the second spring is not more than one third of the length of the first channel.
Preferably, a half conical concave cavity is axially formed in the cross section of the half cross section body, the inner diameter of the half conical concave cavity gradually increases towards the inner side end, and the inner side end of the half conical concave cavity is communicated with the accommodating cavity.
Preferably, a conical column body is telescopically arranged in the semi-conical concave cavities at the left side and the right side, the diameter of the conical column body is gradually increased towards the inner side end, and the outer surface of the conical column body is selectively attached to the semi-conical concave cavities.
Preferably, a telescopic mechanism is arranged in the accommodating cavity, a telescopic end of the telescopic mechanism is connected with the center of the inner side end of the conical column body, and the telescopic direction of the telescopic mechanism is consistent with the central axis of the inserting end.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the charging gun head is provided with the electricity protection mechanism, and particularly the charging gun head connected with the charging pile is provided with the gun jumping mechanism, so that when overcurrent or overvoltage occurs, the battery pack and the charging pile can be separated through the gun jumping mechanism, the effective protection function is achieved, and the electricity protection function of the charging pile is improved;
2. the anti-overcurrent, anti-overvoltage and anti-lightning performances of the charging pile are improved, and the damage of electronic components and vehicle-mounted battery packs in the charging pile is avoided;
3. after the vehicle-mounted battery pack is charged, the battery can be separated from the charging pile through the gun jumping mechanism, so that the battery pack is prevented from being in a floating charge state for a long time, and the service life of the battery pack is prolonged.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the charging gun head;
FIG. 3 is a schematic view of the structure of the inside of the through hole;
FIG. 4 is a schematic view of the mounting structure of the tapered cylinder in the through hole;
FIG. 5 is a cross-sectional view of a through hole;
FIG. 6 is a schematic view of the mounting location of the half section;
FIG. 7 is a schematic view of the plug when the conductive via is released;
FIG. 8 is a schematic view of the location of the tapered cylinder when the conductive via is released;
FIG. 9 is a schematic view of the connector when the conductive vias are closed;
fig. 10 is a schematic view of the position of the tapered cylinder after the conductive vias are gathered.
Detailed Description
The present invention will be described in further detail below with reference to the drawings so that those skilled in the art can practice the invention by referring to the description.
As shown in fig. 1 to 10, the present invention provides a dc charging pile with a charging protection function, including: a charging pile body 100 and a charging gun head 200. The input end of the charging pile body 100 is connected with a three-phase power supply, the charging gun head 200 is connected with the output end of the charging pile body 100, a cylindrical plug-in end 210 is arranged on the charging gun head 200 in a protruding mode, and the plug-in end 210 is plugged on an automobile charging pin interface to charge a battery pack.
The plug end 210 is in a cylindrical structure, a through hole 220 is axially formed in the center of the cylinder of the plug end 210 in a penetrating manner, the through hole 220 is circular or elliptical, a containing cavity is formed in the charging gun head 200, and the through hole 220 is communicated with the containing cavity.
A plurality of first channels 221 are distributed on the periphery of the through hole 220, and the length direction of the first channels 221 is consistent with the axial direction of the plugging end 210. In this embodiment, three first channels 221 are symmetrically formed on the peripheries of the through holes 220 on the left and right sides, and the size of each first channel 221 can be adjusted according to the size of the contact pin on the charging interface of the automobile.
Wherein, at least one guide block 222 is disposed on the side wall of the through hole 220 on the left and right sides, and specifically, the guide block 222 is located on the side wall of the through hole 220 between two adjacent first channels 221.
Meanwhile, a pair of half-section bodies 230, 240 are movably disposed in the through hole 220, the half-section bodies are small half-cylinder structures with arc shapes, such as one third of cylinders, and the half-section bodies 230, 240 are symmetrically distributed on the left and right sides in the through hole 220. The outer peripheral sidewall of the half-section body 230 is matched with the left inner sidewall of the through hole 220, and the outer peripheral sidewall of the half-section body 240 is matched with the right inner sidewall of the through hole 220.
The outer periphery of the half-section body is provided with a plurality of second channels 231 corresponding to the first channels 221, when the outer peripheral side walls of the half-section body on two sides are attached to the left side wall and the right side wall of the through hole 220, the first channels 221 and the second channels 231 are in one-to-one correspondence, and the first channels 221 and the second channels 231 are in butt joint to form conductive plug holes 260 for plugging automobile charging pin interfaces. After the charging gun head 200 is inserted into the automobile charging interface, the plug pair on the charging interface is correspondingly inserted into the conductive plug hole 260 formed by splicing the first channel 221 and the second channel 231, so that the charging gun head and the charging interface are in conductive connection, and the battery pack is charged.
A guiding hole corresponding to the guiding block 222 is formed on the peripheral sidewall of the half-section body, the guiding block 222 is movably inserted into the guiding hole, so that the half-section body is radially telescopic and arranged in the through hole 220, and the first channel 221 and the second channel 231 are controlled to be in butt joint or separation, that is, the diameter of the conductive inserting hole 260 is controlled, and when the first channel 221 and the second channel 231 are in butt joint, the conductive inserting hole 260 is closed, so that the conductive inserting hole 260 and the conductive inserting needle keep a fastened conductive state; when the first channel 221 is separated from the second channel 231, the conductive plug hole 260 is expanded, and the conductive pin can be released from the conductive plug hole 260, so that the conductive pin can be conveniently pulled away from the conductive plug hole 260, the charging gun head 200 can jump gun and quickly separate from the charging interface, and the safety of the charging pile body 100 and the vehicle-mounted battery pack is protected.
Due to the guiding action of the guide block 222 and the guide hole, the half-section bodies 230 and 240 at two sides can only stretch in the radial direction, the axial position is fixed, and the connection looseness of the conductive pins caused by the axial displacement of the half-section bodies 230 and 240 when the charging gun head is in butt joint with the charging interface is avoided.
In this embodiment, the first channel 221 may be provided with a conductive layer on the outer periphery, and the second channel 231 may be provided with a conductive layer on the outer periphery, so as to be in conductive contact with the conductive pins and the conductive plug holes 260, and the plug ends 210 and the half-section body are both insulators, so as to enhance the insulation performance.
The inner side end of the first channel 221 extends into the accommodating cavity, and the extending end of the first channel 221 is externally connected with a conductive connection wire, which is connected with the output end of the charging pile body 100 along the charging gun head 200, and each conductive plugging hole 260 is connected to the corresponding contact end of the charging pile body 100 through a corresponding conductive connection wire, so as to realize conductive connection between the charging gun head 200 and the charging pile body 100.
The inner side wall of the through hole 220 is in an arc surface structure, the conductive plug holes 260 on the charging gun head 200 are distributed along the outer side wall of the through hole 220, and correspondingly, the outer side wall of the half section is provided with an arc surface structure matched with the left side wall and the right side wall of the through hole 220, and the outer side wall of the half section is selectively attached to the inner side wall of the through hole 220 through radial movement of the half section body.
Specifically, the first channel 221 and the second channel 231 are in a semicircular structure, one half of each conductive plugging hole 260, that is, the first channel 221, is disposed on the sidewall of the through hole 220, the other half, that is, the second channel 231, is disposed on the outer peripheral sidewall of the half-section, and when the outer peripheral sidewall of the half-section is attached to the outer peripheral sidewall of the through hole 220, the first channel 221 and the second channel 231 are in one-to-one correspondence, so that the first channel 221 and the second channel 231 are spliced to form a plurality of complete conductive through holes 260, and the inner diameter of the conductive through holes 260 has a telescopic function.
The cross section direction of the half-section body is parallel to the axial direction of the plugging end 210, and a reserved gap is arranged between the cross sections of the half-section body on the left side and the right side, so that the half-section body stretches in the radial direction. And the maximum distance of the clearance does not exceed the diameter of the first channel 221, that is, the inner diameter of the conductive via 260, to limit the moving distance of the half-section body.
Correspondingly, the half-section body is sleeved on the guide block 222 through the guide hole, so that the half-section body can only radially stretch in the left-right direction. And the length of the guide block 222 and the depth of the guide hole are not smaller than the radius of the first channel 221, and since the reserved gap between the cross sections of the half-section bodies at the left and right sides does not exceed the diameter of the first channel 221 and the half-section bodies at the left and right sides synchronously move radially, the maximum moving distance of the single half-section body does not exceed the radius of the first channel 221, thereby ensuring that the guide block 222 is always limited in the guide hole in the radial moving process of the half-section body and providing guide for the radial movement of the half-section body.
In this embodiment, a first spring 223 is disposed on the side wall of the through hole 220 on one side of the guide block 222 in a protruding manner, and the first spring 223 is sandwiched between the side wall of the through hole 220 and the side wall of the outer periphery of the half-section body. Specifically, a positioning cavity may be formed at the corresponding positions of the side wall of the through hole 220 and the side wall of the outer periphery of the half-section body, the first spring 223 is limited to be contracted in the positioning cavities at the two sides, and the length of the first spring 223 is not less than the depth of the positioning cavities at the two sides, so that the first spring 223 can push the half-section body to move radially inwards, and meanwhile, when the half-section body is attached to the side wall of the through hole 220, the first spring 223 can be accommodated in the positioning cavities at the two sides, so as to avoid blocking the attachment of the half-section body and the side wall of the through hole 220.
Thus, in a normal state, the half-section bodies 230 and 240 on the left and right sides are driven to move inward simultaneously by the action of the first spring 223, and as shown in fig. 7 and 8, the outer circumferential side walls of the half-section bodies 230 and 240 on the left and right sides are separated from the left and right side walls of the through hole 220, that is, the conductive through hole 260 is opened, and the conductive pins are released from the conductive through hole 260. When the outer peripheral side walls of the half-section bodies 230 and 240 are required to be attached to the left and right side walls of the through hole 220, the half-section bodies 230 and 240 on both sides are required to be pushed to move radially outward synchronously to compress the first spring 223 until the first channel 221 and the second channel 231 are abutted.
When a fault occurs, in order to enable the charging gun head 200 to realize automatic gun jump, the charging gun head 200 is quickly separated from a charging interface to realize quick power-off so as to protect the charging pile body 100, a vehicle-mounted battery pack and peripheral electronic equipment, a limiting block 2211 is arranged at the inner side end of the first channel 221, a second spring 2212 is arranged in the first channel 221 outside the limiting block 2211, and the length of the second spring 2212 is not more than one third of the length of the first channel 221, so that the influence on the insertion depth of a conductive contact pin is avoided.
When the charging gun head 200 is plugged into the charging interface to charge the vehicle-mounted battery pack, the conductive pins extend into the conductive through holes 260 to be in conductive contact with the vehicle-mounted battery pack, and the conductive pins compress the second springs 2212 along with the increase of the insertion depth. Since the conductive pin is in a tight fit with the conductive via 260 at this time, the second spring 2212 is also insufficient to eject the conductive pin from the conductive via 260; in order to ensure that the conductive pins are kept in the conductive through holes 260, an automatic lock catch can be arranged at the connection part of the charging gun head 200 and the charging interface, and after the conductive pins are connected in place with the conductive through holes 260, the charging gun head 200 is connected and locked with the charging interface through the automatic lock catch, and when the gun is jumped, the automatic lock catch is controlled to be tripped.
When a malfunction occurs or the battery pack is in a floating state for a long time, the half-section bodies 230 and 240 on the left and right sides are controlled to be simultaneously released from the left and right side walls of the through-hole 220, that is, the half-section bodies 230 and 240 on the both sides are simultaneously moved inward by the urging of the first spring 223, the outer circumferential side walls of the half-section bodies 230 and 240 on the left and right sides are separated from the left and right side walls of the through-hole 220, that is, the conductive through-hole 260 is opened, and the conductive pins are released from the conductive through-hole 260. Under the pushing of the second spring 2212, the conductive pins are ejected, that is, the charging gun head 200 is ejected, so that the gun jump is realized, the power supply is cut off, and the equipment is prevented from being damaged. After the gun jump, the half-section bodies 230 and 240 are controlled to reset, and the half-section bodies are kept attached to the left and right side walls of the through hole 220, so that the integrity of the conductive through hole 260 is ensured, and the first spring 223 is compressed again.
In order to achieve radial movement of the left and right half sections 230 and 240, the present invention is modified as follows:
firstly, a half conical concave cavity 232 is axially formed in the cross section of the half cross section body, the inner diameter of the half conical concave cavity 232 gradually increases towards the inner side end, the inner side end of the half conical concave cavity 232 is communicated with the accommodating cavity, and the half conical concave cavities 232 on two sides can correspondingly form a conical cavity.
A tapered cylinder 250 is telescopically disposed in the half-tapered concave cavities 232 on the left and right sides, that is, the tapered cylinder 250 is telescopically disposed in a tapered cavity formed between the half-tapered concave cavities 232 on the two sides, the diameter of the tapered cylinder 250 gradually increases towards the inner side, and the outer surface of the tapered cylinder 250 is selectively attached to the half-tapered concave cavities 232.
Specifically, a telescopic mechanism 270 is disposed in the accommodating cavity, a telescopic end of the telescopic mechanism 270 is connected with a center of an inner side end of the tapered cylinder 250, and a telescopic direction of the telescopic mechanism 270 is consistent with a center axis of the plugging end 210. The axial position of tapered cylinder 250 may be controlled by telescoping mechanism 270 to control the radial position of half sections 230 and 240.
The working process is as follows:
in a normal state, the telescoping direction of the telescoping mechanism 270 is controlled to be maintained at a front side position, the tapered cylinder 250 is driven to axially move to a position close to the front side, the outer side surface of the tapered cylinder 250 is contacted with the inner side walls of the half tapered concave cavities 232 on the left side and the right side, and the half section bodies 230 and 240 on the left side and the right side are pushed to move outwards along the radial direction along with the axial forward movement of the tapered cylinder 250, so that the first spring 223 is compressed until the outer peripheral side walls of the half section bodies 230 and 240 on the left side and the right side are attached to the left side and the right side of the through hole 220, and a complete conductive through hole 260 is formed. When the vehicle-mounted battery pack is charged, the charging gun head 200 is inserted into the vehicle-mounted charging connector, the conductive pins extend into the conductive through holes 260 to be in conductive contact with the vehicle-mounted charging connector, and the conductive pins compress the second springs 2212 along with the increase of the insertion depth. Because the conductive contact pin and the conductive through hole 260 are in a tight fit state at this time, the connection between the battery pack and the direct current charging pile is realized, and then the battery pack can be charged until the charging is completed.
When a fault occurs, specifically, an electrical signal on the charging pile is monitored in real time, and the telescopic mechanism 270 is triggered to act through overcurrent or overvoltage when the fault occurs. When the battery pack is in the float state for a long time, the time after the battery pack is charged is calculated, and when the time exceeds the set time, the telescopic mechanism 270 is triggered to operate.
The telescopic ends of the trigger telescopic mechanism 270 are controlled to move to the rear side, at this time, the outer side surface of the tapered cylinder 250 is rapidly separated from the inner side walls of the half tapered concave cavities 232 on the left and right sides, the half section bodies 230 and 240 on the left and right sides are synchronously moved to the inner side under the pushing of the first spring 223, the outer peripheral side walls of the half section bodies 230 and 240 on the left and right sides are separated from the left and right side walls of the through hole 220, and finally the half section bodies 230 and 240 on the left and right sides are synchronously released from the left and right side walls of the through hole 220, that is, the conductive through hole 260 is opened, and the conductive pins are released from the conductive through hole 260. At this time, the conductive pins are ejected, that is, the charging gun head 200 is ejected, under the pushing of the second spring 2212, so as to realize gun jump, cut off the power supply, and avoid damaging the equipment. After the gun jump, the half-section bodies 230 and 240 are controlled to reset, and the half-section bodies are kept attached to the left and right side walls of the through hole 220, so that the integrity of the conductive through hole 260 is ensured, and the first spring 223 is compressed again.
According to the invention, the charging gun head is provided with the electricity protection mechanism, and particularly the charging gun head connected with the charging pile is provided with the gun jumping mechanism, so that when overcurrent or overvoltage occurs, the battery pack and the charging pile can be separated through the gun jumping mechanism, the effective protection effect is achieved, and the electricity protection function of the charging pile is improved; meanwhile, the overcurrent and overvoltage prevention and lightning protection performances of the charging pile are improved, and the damage of electronic components and vehicle-mounted battery packs in the charging pile is avoided; further, after the vehicle-mounted battery pack is charged, the battery can be separated from the charging pile through the gun jumping mechanism, so that the battery pack is prevented from being in a floating charge state for a long time, and the service life of the battery pack is prolonged.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. Direct current fills electric pile with protection function charges, its characterized in that includes:
the input end of the charging pile body is connected with a three-phase power supply;
the charging gun head is connected with the output end of the charging pile body, a cylindrical inserting end is arranged on the charging gun head in a protruding mode, a through hole is formed in the center of the cylindrical body of the inserting end in an axial penetrating mode, a plurality of first channels are distributed on the periphery of the through hole, and the length direction of each first channel is consistent with the axial direction of the inserting end;
at least one guide block is arranged on the side wall of the through hole on the left side and the right side in a protruding mode, and the guide blocks are positioned on the side wall of the through hole between two adjacent first channels; a pair of half-section bodies are movably arranged in the through hole, the outer peripheral side wall of each half-section body is matched with the left inner side wall or the right inner side wall of the through hole, a guide hole corresponding to the guide block is formed in the outer peripheral side wall of each half-section body, and the guide blocks are inserted into the guide holes in a plugging manner, so that the half-section bodies are radially telescopic in the through hole;
the periphery of the half-section body is provided with a plurality of second channels corresponding to the first channels, and when the peripheral side wall of the half-section body is attached to the left and right side walls of the through hole, the first channels are in butt joint with the second channels to form conductive plug holes for plugging the automobile charging pin interfaces;
at least one of the inner side ends of the first channels is provided with an elastic piece, and the distance between the elastic piece and the outer side end of the through hole is smaller than the length of the contact pin in the charging interface.
2. The direct current charging pile with the charging protection function according to claim 1, wherein a containing cavity is formed in the charging gun head, the through hole is communicated with the containing cavity, a conductive layer is arranged on the periphery of the first channel, the plug-in end and the half-section body are insulators, the inner side end of the first channel extends into the containing cavity, and a conductive connecting wire is externally connected to the extending end of the first channel and is connected with the output end of the charging pile body along the charging gun head.
3. The direct current charging pile with the charging protection function according to claim 2, wherein the inner side wall of the through hole is in a cambered surface structure, the conductive plug holes on the charging gun head are distributed along the outer side wall of the through hole, the outer side wall of the half section is provided with a cambered surface structure matched with the left side wall and the right side wall of the through hole, and the outer side wall of the half section is selectively attached to the inner side wall of the through hole; the first channel and the second channel are in a semicircular structure, and the first channel corresponds to the second channel one by one.
4. A direct current charging pile with a charging protection function according to claim 3, wherein the cross section direction of the half-section body is parallel to the axial direction of the insertion end, a reserved gap is arranged between the cross sections of the half-section body at the left side and the right side, and the maximum distance of the reserved gap is not more than the diameter of the first channel.
5. The direct current charging pile with the charging protection function according to claim 4, wherein the length of the guide block and the depth of the guide hole are not smaller than the radius of the first channel, and the half-section body is sleeved on the guide block through the guide hole, so that the half-section body is radially telescopic in the left-right direction.
6. The direct current charging pile with charging protection function according to claim 5, wherein a first spring is arranged on the side wall of the through hole on one side of the guide block in a protruding manner, and the first spring is clamped between the side wall of the through hole and the side wall of the outer periphery of the half-section body.
7. The direct current charging pile with the charging protection function according to claim 6, wherein a limiting block is arranged at the inner side end of the first channel, a second spring is arranged in the first channel at the outer side of the limiting block, and the length of the second spring is not more than one third of the length of the first channel.
8. The direct current charging pile with the charging protection function according to claim 7, wherein a half conical concave cavity is axially formed in the cross section of the half-section body, the inner diameter of the half conical concave cavity gradually increases towards the inner side end, and the inner side end of the half conical concave cavity is communicated with the accommodating cavity.
9. The direct current charging pile with the charging protection function according to claim 8, wherein a conical column body is telescopically arranged in the semi-conical concave cavities on the left side and the right side, the diameter of the conical column body gradually increases towards the inner side end, and the outer surface of the conical column body is selectively attached to the semi-conical concave cavities.
10. The direct current charging pile with the charging protection function according to claim 9, wherein a telescopic mechanism is arranged in the accommodating cavity, a telescopic end of the telescopic mechanism is connected with the center of the inner side end of the conical column body, and the telescopic direction of the telescopic mechanism is consistent with the center axis of the inserting end.
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| CN201811104773.9A CN109217024B (en) | 2018-09-21 | 2018-09-21 | Direct current fills electric pile with protect function charges |
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| CN201811104773.9A CN109217024B (en) | 2018-09-21 | 2018-09-21 | Direct current fills electric pile with protect function charges |
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| CN109217024B true CN109217024B (en) | 2023-09-12 |
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| CN109217024A (en) | 2019-01-15 |
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