CN111725874A - High fault-tolerant interface that charges of heavy current - Google Patents

High fault-tolerant interface that charges of heavy current Download PDF

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Publication number
CN111725874A
CN111725874A CN202010675163.5A CN202010675163A CN111725874A CN 111725874 A CN111725874 A CN 111725874A CN 202010675163 A CN202010675163 A CN 202010675163A CN 111725874 A CN111725874 A CN 111725874A
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interface
power transmission
data
power receiving
power
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CN202010675163.5A
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CN111725874B (en
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周宏亮
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Shanghai Liangyi Technology Co ltd
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Shanghai Liangyi Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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
    • H01R13/631—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 engagement only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention designs a high-current high-fault-tolerance charging interface. The charging interface is divided into a power transmission interface and a power receiving interface which are respectively arranged on the power supply side and the electric equipment side. The power transmission interface consists of two groups of power transmission elastic sheets, two POGO elastic needles, a steering baffle, a steering shaft, an elastic telescopic rod assembly and a shell; the power receiving interface consists of two groups of power supply conductive contact pieces, two groups of signal conductive contact pieces and an insulating plate. The charging interface is mainly used in the field of automatic charging of AGV robot products. The position deviation of the robot during butt joint charging, including the horizontal position deviation and the charging angle posture deviation caused by positioning precision reasons and the like, and the vertical position deviation caused by the change of the robot bearing are all within the tolerance range of the interface. In addition, the contact area is increased by the spring contact piece and the like, so that the charging requirement of large current can be ensured. The scheme of the invention is simple, safe and easy to realize, and has good application prospect.

Description

High fault-tolerant interface that charges of heavy current
Technical Field
The invention belongs to the field of automatic charging of robots.
Background
With the continuous progress of artificial intelligence technology, many tasks which originally need human hand operation can be replaced by machines. More and more AGVs are used in the production link of factories, and the AGVs are more and more popular like greeting robots, shopping guide robots, logistics sorting robots and the like. In the express delivery industry, the Jingdong logistics vehicle has iterated several versions and is expected to be put into business formally in the near future. Unlike a common AGV, a similar Jingdong logistics robot has larger volume and weight, which means that the robot needs to have enough battery capacity, and the battery capacity of the robot is almost in an order of magnitude with that of a new energy automobile. This also presents a problem of charging power, i.e. a large current charging interface is required. Since the logistics robot has the capability of autonomous action, it is naturally expected that the logistics robot can have the function of automatic charging. Compared with other robot devices with small sizes, such as a sweeping robot, the logistics robot is much poorer in moving and positioning accuracy and much higher in charging power compared with the sweeping robot in solving the problem of automatic charging. The charging interface of the invention aims to solve the problem of automatic charging of the robot, and can realize large butt joint fault tolerance and bear higher charging current.
Disclosure of Invention
The invention provides a charging interface capable of bearing large current, and simultaneously allows the interface to have position deviation when in butt joint without influencing the current bearing capacity of the interface.
To achieve the above purpose, a "charging device" is defined as a charging device with a power supply, called a charging pile, and a corresponding interface is a "charging interface"; the "power receiving device" is defined as an automatic apparatus that needs to be charged, and is called a "robot", and the corresponding interface is a "power receiving interface". The technical scheme adopted by the invention is as follows:
the charging interface consists of a plurality of conductive metal elastic sheets, POGO signal elastic needles, a steering baffle, a steering support shaft, an elastic telescopic rod and a shell; the power receiving interface consists of a plurality of conductive metal contact pieces and an insulating plate, and the attached drawing is referred to specifically.
Drawings
FIG. 1 is a top view of a charging device side interface
FIG. 2 is a top view of a power-receiving side interface of the robot
FIG. 3 is a schematic view of a charging device side interface from a horizontal perspective
FIG. 4 is a schematic view of a robot power-receiving side interface from a horizontal perspective
As shown in the drawing, the power receiving interface of the 'robot' is made of a plurality of metal materials with good electric conductivity into long strips (10, 11,12, 13), the long strips (10, 11,12, 13) are fixed on an insulator (14), the insulator (14) and the long strips (10, 11,12, 13) are installed on a vertical plane, and one side of the metal materials is called as an outer side. The outer side of the strip metal can be a plane or a slight bulge; defining the bending radius of the long strip metal as R; the long metal contact surfaces (10) and (11) are used for large current conduction and are called as a positive power receiving electrode (10) and a negative power receiving electrode (11), the length of the positive power receiving electrode (10) and the length of the negative power receiving electrode (11) are Lp, and the height of the positive power receiving electrode is Hp; the long metal contact surfaces (12) and (13) are used for data communication or signals and are called as data positive (12) and data negative (13), the length of the data positive (12) and the length of the data negative (13) are Ld, and the height of the data positive (12) and the height of the data negative (13) are Hd.
As shown in the attached drawings, the charging interface is made of a metal material with good electric conduction and is made into a bent strip-shaped elastic sheet for large-current conduction, and the bent strip-shaped elastic sheet is called as a power transmission positive electrode (6) and a power transmission negative electrode (7); the power transmission positive electrode (6) and the power transmission negative electrode (7) are fixed on the steering baffle (5), and taking the power transmission positive electrode (6) as an example and the fixed point of the power transmission positive electrode (6) as O, the power transmission positive electrode (6) is symmetrical about O; one side where the power transmission anode (6) and the power transmission cathode (7) are located is the outer side of the steering baffle, and the fixed point O is located on the inner side of the outer plane of the steering baffle (5); two ends of the power transmission anode (6) and the power transmission cathode (7) are positioned outside the plane of the outer side of the steering baffle; the power transmission positive electrode (6) is arched, is bent outwards from a fixed point O and is bent inwards with a small radius at the top end, and the power transmission negative electrode (7) is the same as the power transmission positive electrode (6).
As shown in the attached drawing, the POGO elastic needle (8) is positioned above the power transmission positive electrode (6) and is called as a data needle positive electrode (8), and the POGO elastic needle (9) is positioned below the power transmission negative electrode (7) and is called as a data needle negative electrode (9). The data needle is just (8), data needle burden (9) are also fixed on turning to baffle (5), and are installed according to the vertical distribution mode with power transmission, positive negative pole (6, 7) together, and the needle point is outside, and the needle point is in turn to outside the baffle plane, the limit of compression of POGO needle is in turn to within the baffle plane in the outside.
For the sake of clarity of the arrangement of the above-mentioned components, the perpendicular to the plane of the outside of the deflector, which plane passes through the fixing point O and intersects the normal F, is a normal FfPoint O is not outside the plane of the turn-around flapper; the projection of the outermost side of the power transmission positive electrode (6) on a normal F is Cf(ii) a The projection of the natural position of the needle point of the data needle (8) on the normal F is PfThe projection of the extreme compression position of the needle tip of the data needle (8) on a normal F is Py(ii) a Then B isf，Cf，Pf，PyAre all outside the point O, and the distances to the point O are arranged as P from near to fary、Bf、PfAnd Cf。
The length of the power transmission positive electrode (6) and the height of the power transmission negative electrode (7) are Lps and Hps, the bending degree of the power transmission positive electrode and the power transmission negative electrode is approximately regarded as an arc with the bending radius of Rs, and the requirement that 10Rs is less than R is met;
if the deviation of the robot interface in the vertical direction is dH and the deviation value of the robot in the left and right horizontal directions is dL when the robot moves and is positioned, Hp is greater than Hps + dH; said Lp > Lps +2dL, Ld >2 dL.
The distance from the center of the data pin anode (8) to the center of the power transmission anode (6) is the same as the distance from the center of the data pin anode (12) to the center of the power receiving anode (10); the center distance from the power transmission positive electrode (6) to the power transmission negative electrode (7) is the same as the center distance from the power receiving positive electrode (10) to the power receiving negative electrode (11); the center distance from the power transmission negative electrode (7) to the data pin negative electrode (9) is the same as the center distance from the power receiving negative electrode (11) to the data negative electrode (13).
A vertical shaft tube (40) is arranged at the center of the steering baffle plate and is matched with the steering shaft (4) for use, so that the steering baffle plate can rotate on the horizontal plane by taking the steering shaft (4) as the center. The steering shaft (4) is fixed on the telescopic pipe (3), the telescopic pipe (3) and the telescopic sleeve (2) are combined units, a spring and other components are arranged in the combined units, the combined length of the telescopic pipe (3) and the telescopic sleeve (2) is L1 when the telescopic pipe is not stressed, and the combined limit length of the telescopic pipe (3) and the telescopic sleeve (2) when the telescopic pipe is stressed and compressed is L2, so that L1 is greater than L2; when power transmission interface and power receiving interface butt joint, POGO bullet needle (8) and (9) atress compression to flush with baffle outside plane, simultaneously power transmission positive pole (6) power transmission negative pole (7) atress deformation compression to flush with baffle outside plane, establish this moment the common atress of power transmission interface is F1. If the telescopic rod (3) is at the length of L2, the pressure on the telescopic sleeve is F2, F2 is greater than F1. The telescopic sleeve (2) is fixed on the shell (1), and the telescopic rod (3) is ensured by a mechanical structure not to rotate around the axis of the telescopic rod (2) but to move horizontally.
The shell (1) of the charging device is fixedly installed, and the steering baffle plate can only translate back and forth and horizontally steer under the support of the telescopic rod (3) and the steering shaft (4). When the robot power receiving side interface plane (namely the plane where the power receiving positive electrode (10) and the power receiving negative electrode (11) are located) is close to the charging device, the robot power receiving side interface plane rotates around a steering shaft (4) when stressed with the steering baffle plate (5) and is attached to (or parallel to) the robot power receiving side interface plane, the steering baffle plate (5) is an insulator, and the horizontal width W of the steering baffle plate is more than Lps +4dL and is used for covering the power receiving positive electrode (10) and the power receiving negative electrode (11) to ensure charging safety; meanwhile, the power transmission anode (6) elastically deforms, and two ends of the power transmission anode are in close contact with the power receiving anode (10); the power transmission negative electrode (7) is elastically deformed, and two ends of the power transmission negative electrode are tightly contacted with the power receiving negative electrode (10); the data needle (8) is closely contacted with the data needle (12) and compressed; the data pin negative (9) is closely contacted with the data negative (13) and compressed, and good conductive condition is formed.
The positive power supply is connected to power transmission positive pole (6), the power negative pole is connected to power transmission negative pole (7), the positive robot battery positive pole is connected to power receiving positive pole (10), the battery negative pole is connected to power receiving negative pole (11), is main charge circuit. The data pin positive (8) and the data pin negative (9) are connected with a data signal line, and a CAN bus signal is recommended to be used for communication.
Preferably, a limit switch is installed at a proper position of the telescopic rod (3), when the telescopic rod (3) is stressed to contract to a specific position, the limit switch is triggered, the signal is processed and then transmitted to the robot through data channels, namely a data needle positive (8) and a data needle negative (9), and the robot stops moving to the charging device.
Preferably, the width Lb >2Lp of the steering baffle (5) and the width Lc >2Lp of the power receiving insulating material (14).
Preferably, a plurality of power transmission positive electrodes (6) and a plurality of power transmission negative electrodes (7) can be arranged in parallel to increase the contact area.
Preferably, the insulation interval among the power transmission positive electrode (6), the power transmission negative electrode (7), the data pin positive electrode (8) and the data pin negative electrode (9) is larger than Hps.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In the embodiment, the charging device is called a charging pile, and the robot is an automatic logistics vehicle similar to the Beijing east. The battery capacity of the automatic logistics vehicle is 8KWh, the whole vehicle is fully loaded with 550kg of gravity, the difference between the full load clearance and the no-load ground clearance is 5mm, the vehicle shell is made of glass fiber, and the positioning precision of the whole vehicle is +/-10 cm. Since the glass fiber is an insulating material, the power receiving electrode is directly fixed on the housing.
The power transmission positive electrode (6) is formed by arranging 3 copper sheets with the height of 4mm, the length of 100mm and the thickness of 0.6mm in parallel at an interval of 1mm, the overall Hps is 14mm, and the height from the ground center is 400 mm. The power transmission negative electrode (7) is the same in size as the power transmission positive electrode (6), and has a height of 357mm from the ground center. The center distance between the power transmission positive electrode (6) and the power transmission negative electrode (7) is 43 mm; the height of the data pin positive (8) from the ground is 437.5, and the height of the data pin negative (9) from the ground is 319.5 mm;
the power receiving positive electrode (10) is a copper sheet with the height of 25mm, the length of 310mm and the thickness of 2mm, and the height of the center from the ground is 402.5 mm; the height from the ground of the power receiving negative electrode (11) and the power receiving positive electrode (10) is 359.5; the data positive (12) is a copper sheet with the height of 10mm, the length of 210mm and the thickness of 2mm, and the height of the center above the ground is 440 mm; the data negative (13) is the same as the data positive (12), and the height from the ground center is 322 mm;
the width of the automatic logistics vehicle is 800mm, the width is enough, and a power receiving plane is flat and has no radian. Fill electric pile power transmission interface turn to baffle (5) width for 600mm, turn to scope 20.
In order to avoid accidental impact of the automatic logistics vehicle on the charging pile interface, a limit detection switch is installed at the position of the telescopic rod (3), and a wheel barrier strip is installed at a proper position on the ground according to the tire position of the automatic logistics vehicle, namely the height of a chassis, so that the charging pile is prevented from being damaged by collision when the automatic logistics vehicle is out of control.
The needle points of the positive (8) and negative (9) data needles are positioned between the plane of the two ends of the positive power transmission electrode (6) and the plane of the surface of the steering baffle (5), namely, the positive and negative power transmission electrodes (6, 7) are electrically connected with the positive and negative power receiving electrodes (10, 11), and then the positive and negative data electrodes (8, 9 and 12, 13) are connected; the charging pile is connected with the positive and negative (8, 9) of the data pin by using a CAN signal, and sends data D through a CAN interface, when the data D is received on the positive and negative (12, 13) interfaces of the data connected with the automatic logistics vehicle, the data D' is replied according to convention, and the data link is normally connected. And information such as charging requirements and the like CAN be transmitted through the CAN data interface subsequently. After CAN interface data handshake succeeds, the charging pile CAN start to charge the automatic logistics vehicle through power transmission positive and negative electrodes (6 and 7). In the whole charging process, the CAN interface maintains data receiving and sending, the receiving and sending frequency is not lower than 100 times/second, and when the data response is not received for 5 continuous periods, the charging pile stops charging.
The main idea of the invention is to solve the problem of large lateral deviation by a long contact surface conductor; the reliable contact bearing large flow rate is solved by double-end (multi-layer) contact; the problem of deviation of the angle posture of the charging interface is solved by using a horizontally-steering baffle; the vertical deviation is solved by a widened (high) contact surface; and a small POGO pin is used for bearing information interaction of a charging interface, and meanwhile, correct connection is ensured.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a high fault-tolerant interface that charges of heavy current which characterized in that: the interface is divided into a power transmission interface and a power receiving interface; the power transmission interface consists of two groups of power transmission elastic sheets, two POGO elastic needles, a steering baffle, a steering shaft, an elastic telescopic rod assembly and a shell; the power receiving interface consists of two groups of power supply conductive contact pieces, two groups of signal conductive contact pieces and an insulating plate; (the wire is from the rough)
The two groups of power transmission elastic pieces are named as a power transmission positive electrode and a power transmission negative electrode, the two POGO elastic pins are named as a data pin positive electrode and a data pin negative electrode, and all conductors of the power transmission interface are vertically arranged and sequentially comprise a data pin positive electrode, a power transmission negative electrode and a data pin negative electrode from top to bottom;
receive two sets of power conducting contact pieces of interface and name and receive anodal, receive the negative pole, receive two sets of signal conducting contact pieces of interface and name and data just, the data is negative, each conductor that receives the interface is vertical arrangement, is data just, receives the anodal, receives the negative pole and the data is negative from last to down in proper order.
2. The high-current high-fault-tolerance charging interface according to claim 1, wherein: the power transmission positive pole and the power transmission negative pole, and the data pin positive pole and the data pin negative pole are fixed on the steering baffle, the steering shaft is fixed at the top of the movable rod of the elastic telescopic rod component, and the bottom of the non-movable part of the elastic telescopic rod component is fixed on the shell; the telescopic rod component is horizontally arranged, can only be stretched in the horizontal direction and cannot rotate along the axis of the telescopic rod; the steering shaft and the steering baffle are fixed in a shaft sleeve mode, and the steering baffle can horizontally rotate by taking the steering shaft as an axis.
3. The high-current high-fault-tolerance charging interface according to claim 1, wherein: the power transmission positive electrode is an elastically bent strip-shaped metal contact piece, only the center (or neutral line) O of the strip-shaped metal contact piece is fixed on the steering baffle, other parts of the strip-shaped metal contact piece are suspended, and the strip-shaped metal contact piece is symmetrical about the center O; the two ends of the metal contact piece are bent towards the direction far away from the steering baffle, and the heads of the two ends are bent towards the steering baffle in a small semi-radial direction; the side, where the metal contact piece is fixed, of the turning baffle is called the outer side, the outer side of the turning baffle is perpendicular to the ground, and a center line point O is perpendicular to a normal line F of the turning baffle, so that the point O is not located on the outer side of the plane where the turning baffle is located; the outermost side of the strip-shaped metal contact piece is positioned outside the plane of the steering baffle, and the projection of the outermost side of the strip-shaped metal contact piece on the normal line F is CfO point to CfThe distance of the points is OCf。
4. A high-current high-fault-tolerance charging interface according to claims 1 and 3, characterized in that: the power transmission interface uses POGO bullet needle as data transmission physical interface, the POGO bullet needle installation is parallel with normal F, the POGO bullet needle is fixed on the steering baffle, the POGO bullet needle is in same vertical plane with normal F, the projection of POGO bullet needle point on normal F is ZfThen Z isfAnd CfOn the same side of O, and OZf<OCf。
5. The high-current high-fault-tolerance charging interface according to claim 1, wherein: the height of the power transmission anode is Hps, the height of the power receiving anode is Hp, and the Hp is greater than Hps + dH if the power transmission interface and the power receiving interface have dH deviation; the insulation spacing distance between the positive data and the positive power receiving electrode, the insulation spacing distance between the positive power receiving electrode and the negative power receiving electrode and the insulation spacing distance between the negative power receiving electrode and the negative data of the power receiving interface are all larger than Hps; the center distance between the data needle of the power transmission interface and the power transmission anode is equal to the center distance between the data needle of the power reception interface and the power reception anode; the center distance between the power transmission positive electrode and the power transmission negative electrode of the power transmission interface is equal to the center distance between the power receiving positive electrode and the power receiving negative electrode of the power receiving interface; the distance between the power transmission negative electrode of the power transmission interface and the center of the data pin is equal to the distance between the power receiving negative electrode of the power receiving interface and the center of the data pin.
6. The high-current high-fault-tolerance charging interface according to claim 1, wherein: the distance between two points on the outermost side of the power transmission positive electrode is Lps, the horizontal deviation between the power transmission interface and the power receiving interface is dL, the length Lp of the power receiving positive electrode is greater than Lps +2dL, and the power receiving negative electrode is the same as the power receiving positive electrode; the length Ld of the data positive of the power receiving interface is larger than 2dL, and the data negative is the same as the data positive; the outer horizontal width W of the turn baffle is > Lps +4 dL.
7. The high-current high-fault-tolerance charging interface according to claim 4, wherein: the data interface formed by the POGO elastic pins uses a CAN interface protocol, the charging interface periodically sends data and requires the power receiving interface to reply each received packet of data, and the charging interface side equipment judges whether the charging interface is reliably connected with the power receiving interface or not.
CN202010675163.5A 2020-07-14 2020-07-14 High fault-tolerant interface that charges of heavy current Active CN111725874B (en)

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CN106130136A (en) * 2016-08-19 2016-11-16 北京兆维电子(集团)有限责任公司 A kind of robot automatic butt charging system and automatic butt charging method
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