WO2023213250A1 - 一种充电接口接地结构及车辆 - Google Patents
一种充电接口接地结构及车辆 Download PDFInfo
- Publication number
- WO2023213250A1 WO2023213250A1 PCT/CN2023/091783 CN2023091783W WO2023213250A1 WO 2023213250 A1 WO2023213250 A1 WO 2023213250A1 CN 2023091783 W CN2023091783 W CN 2023091783W WO 2023213250 A1 WO2023213250 A1 WO 2023213250A1
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- WO
- WIPO (PCT)
- Prior art keywords
- charging interface
- grounding
- ground terminal
- electrical connection
- connection device
- Prior art date
Links
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Classifications
-
- 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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
-
- 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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- 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
-
- 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
- H01R13/64—Means for preventing incorrect coupling
- H01R13/642—Means for preventing incorrect coupling by position or shape 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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for 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
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present application belongs to the field of new energy vehicle circuit technology, and more specifically, relates to a charging interface grounding structure and a vehicle.
- This design requires that the copper wire has passed through the charging interface housing when crimping the PE terminal and the other terminal, and crimps the terminal with the charging interface housing.
- a sealing ring and a sealing ring buckle cover need to be added, and the two grounding connections must be nailed to the body sheet metal for grounding.
- the structure is complex, installation and processing are time-consuming and labor-intensive, and connection errors are prone to occur, causing short circuit damage to the body lines, and even equipment leakage, resulting in the risk of electric shock and casualties. Therefore, a new solution is urgently needed in the existing technology to solve the above problems.
- This application aims at solving the problems of the existing technology and provides a charging interface grounding structure and a vehicle to connect the AC and DC grounding terminals to the body sheet metal to realize the grounding of the charging interface.
- An embodiment of the first aspect of the present application provides a charging interface grounding structure, which is characterized by including:
- the charging interface body includes an AC charging core and a DC charging core.
- a first ground terminal is provided in the AC charging core, and a third grounding terminal is provided in the DC charging core.
- the grounding device is electrically connected to a grounding terminal of the charging system or vehicle system;
- the electrical connection device includes a first end, a second end and a third end, the first end is electrically connected to the first ground terminal, the second end is electrically connected to the second ground terminal, the The third end is electrically connected to the grounding device.
- a second embodiment of the present application provides a vehicle, including a vehicle ground terminal and a charging interface grounding structure as described above.
- the charging interface body is fixed on the vehicle through a fixing frame, and the grounding device is connected to the grounding structure.
- the vehicle ground terminal is electrically connected.
- the electrical connection device can reduce the diameter of the cable, reduce the weight of the cable, make the cable installation convenient, and reduce friction with the car shell.
- the first ground terminal and the second ground terminal are electrically connected to the same electrical connection device at the same time. In this way, one electrical connection device simultaneously grounds the ground terminals of the two charging cores, which reduces parts and simplifies the process.
- the insert can be designed to have a structure that matches the shape of the electrical connection device to prevent the ground terminal from being firmly connected to the electrical connection device due to its shape.
- the electrical connection device is integrally injection molded into the charging interface body, which not only eliminates the need for a sealing structure, but also provides better waterproof and dustproof effects.
- Figure 1 is a schematic structural diagram of a charging interface grounding structure according to an embodiment of the present application.
- Figure 2 is a schematic diagram of a bolt of a charging interface grounding structure according to another embodiment of the present application.
- FIG. 3 is an embedded schematic diagram of a charging interface grounding structure according to an embodiment of the present application.
- Figure 4 is a schematic diagram of a transition connector of a charging interface grounding structure according to an embodiment of the present application.
- any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
- the first embodiment of the present application provides a charging interface grounding structure, as shown in Figure 1, including:
- the charging interface body 1 includes an AC charging core 13 and a DC charging core 14.
- the AC charging core 13 is provided with a first ground terminal 131, and the DC charging core 14 is provided with a second grounding terminal. terminal 141;
- the grounding device 4 is electrically connected to the grounding terminal of the charging system or vehicle system;
- the electrical connection device includes a first end 31, a second end 32 and a third end 33.
- the first end 31 is electrically connected to the first ground terminal 131
- the second end 32 is electrically connected to the second ground terminal 141
- the third end 33 is electrically connected to the first ground terminal 131.
- the grounding device 4 is electrically connected.
- the charging interface of current electric vehicles generally includes both a DC charging core 14 with higher charging efficiency and an AC charging core 13 with strong environmental adaptability. No matter which charging interface has a grounding terminal, it is used to protect the equipment and equipment when leakage occurs. protection of people.
- the first ground terminal 131 and the second ground terminal 141 are electrically connected to the same electrical connection device 3 at the same time.
- the connection method can be direct welding or conductive connection through other conductors.
- the electrical connection device 3 The third end 33 is then connected to the grounding device 4, so that one electrical connection device 3 simultaneously grounds the grounding terminals of the two charging cores, thus saving materials.
- the electrical connection device 3 can reduce the diameter of the cable, reduce the weight of the cable, facilitate cable installation, and reduce friction with the car shell.
- the electrical connection device 3 connects the AC and DC ground terminals together, and then connects to the body sheet metal nailing position to realize the grounding of charging.
- This application does not require the crimping of ground terminals, which solves the time-consuming and labor-intensive problem of connecting wires and terminals. There is no need to nail the ground wire separately; there are no connecting wires, which saves installation time, improves work efficiency, and reduces the number of parts.
- the first end 31 and/or the second end 32 are connected to the third end 33 .
- the first end 31 and the third end 33 can be connected according to the assembly environment, or the second end 32 and the third end 33 can be connected, as long as the first end 31 and the second end 32 are respectively connected to the third end. 33 is enough to connect.
- the first end 31 and the second end 32 are connected to the third end 33 at the same time to realize the conduction of the ground loop, or the first end 31 and the second end 32 are connected first and then connected to the third end 33 .
- a reasonable connection method can be selected according to the specific assembly environment. This manual does not limit this.
- the electrical connection device 3 is at least partially disposed in the charging interface body 1 .
- the electrical connection device 3 extends into the charging interface body 1 and is connected to the first ground terminal 131 and the second ground terminal 141 in the charging interface body 1 . There is no need to lead the cable to the outside of the charging interface body 1 and then connect it to the ground terminal. Instead, it is directly connected to the ground terminal at a fixed position of the charging interface body 1, saving cables, reducing installation parts and steps, reducing installation man-hours, and saving charging interfaces. Cost of grounding structures.
- first end 31 and the first ground terminal 131 are connected by crimping or welding or riveting or screwing or plugging, and the second end 32 and the second ground terminal 141 are connected by crimping or welding or riveting. Either screwed or plugged in.
- Welding methods include one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, and magnetic induction welding.
- the principle of resistance welding is to use a strong current to pass through an electrode and at least two workpieces to generate resistance heat between the workpieces, thereby achieving welding between the workpieces based on this resistance heat.
- the principle of friction welding is to use the heat generated by the friction of the contact surfaces between workpieces as a heat source to cause plastic deformation of the workpieces under pressure for welding.
- the principle of ultrasonic welding is to use high-frequency vibration waves to transmit to the surfaces of two objects that need to be welded. Under pressure, the surfaces of the two objects rub against each other, thereby forming fusion between the molecular layers to bond the two objects. Objects are welded.
- the principle of the arc welding method refers to using the arc as a heat source and utilizing the physical phenomenon of air discharge to convert electrical energy into the thermal energy and mechanical energy required for welding, thereby achieving the purpose of joining metals.
- the main methods can be, for example, electrode arc welding or submerged arc welding. Welding and gas shielded welding, etc.
- Laser welding is an efficient and precise welding method that uses high-energy-density laser beams as heat sources.
- the principle of electron beam welding is to use accelerated and focused electron beams to bombard the welding surface placed in a vacuum or non-vacuum, so that the workpiece to be welded melts to achieve welding.
- the principle of pressure welding is to apply pressure to the weldment so that the joint surfaces are in close contact to produce a certain amount of plastic deformation to complete the welding.
- Magnetic induction welding is a type of solid-state cold welding that can weld conductive metals with similar or dissimilar properties together.
- the crimping method is a production process in which the electrical connection device 3 is assembled with the first ground terminal 131 or the second ground terminal 141, and then the two are stamped into one body using a crimping machine.
- the advantage of crimping is mass production. By using an automatic crimping machine, products of stable quality can be manufactured quickly and in large quantities.
- Riveting is a detachable connection that uses rivets to connect the connected parts into one body.
- the screw connection method refers to a threaded connection, specifically a detachable connection that uses threaded parts (or the threaded part of the connected part) to connect the connected parts into one body. Riveting is a detachable connection that uses rivets to connect the connected parts into one body.
- the contact surfaces of the two parts to be connected are equipped with pins and sockets, and are assembled together through the pins and sockets.
- the first end 31 is detachably connected to the first ground terminal 131 through a threaded structure
- the second end 32 is detachably connected to the second ground terminal 141 through a threaded structure.
- the threaded connection is used for easy disassembly, and when the ground terminal needs to be replaced, the first ground terminal 131 or the second ground terminal 141 can be directly separated from the electrical connection device 3, saving time and effort.
- the detachable connection includes a bolt 21, as shown in Figure 2, a through hole is provided on the first end 31 and/or the second end 32, and the end surface of the first ground terminal 131 and/or the second ground terminal 141 First threaded holes are respectively provided on the top, and the bolts 21 pass through the through holes and are threadedly connected with the first threaded holes.
- the bolt 21 passes through the through hole and is screwed into the first threaded hole, thereby completing the assembly of the first ground terminal 131 and the second ground terminal 141 with the electrical connection device 3 .
- one end of the first ground terminal 131 and/or the second ground terminal 141 is provided with a stud, and the first end 31 and/or the second end 32 are respectively provided with a second threaded hole.
- the stud and the second threaded hole Threaded connection. The assembly of the first ground terminal 131 and the second ground terminal 141 and the electrical connection device 3 is completed by screwing the stud with the second threaded hole.
- one end of the first ground terminal 131 and/or the second ground terminal 141 is provided with a stud, and the first end and/or the second end are provided with an insert 311 respectively.
- the insert 311 A third threaded hole is provided inside, and the stud is threadedly connected to the third threaded hole.
- the insert 311 can be connected to the electrical connection device 3 by welding, or can be connected by detachable connection. In this embodiment, since the insert 311 can be designed to match the shape of the electrical connection device 3, it is avoided that the first ground terminal 131 and the second ground terminal 141 are not firmly connected to the electrical connection device 3 due to their shape.
- the third end 33 and the grounding device 4 are of an integrated structure, and the grounding device 4 is provided with a grounding through hole or a grounding point.
- the one-piece structure eliminates the need for additional installation links, and the grounding can be completed by simply connecting the grounding device 4 to the body sheet metal through the grounding through hole or grounding point.
- the through hole or grounding point can be quickly and conveniently connected to the sheet metal of the car body for grounding.
- the through hole can be designed to be screwed or riveted, for example, through bolts or rivets; the grounding point can be a welding point, a crimping point or a plug-in structure. .
- the third end 33 and the grounding device 4 are crimped, welded, riveted, screwed or plugged in, and the grounding device 4 is a stud structure or a nut structure.
- the specific connection method is as mentioned above.
- the grounding device 4 is a stud or nut that can be easily screwed to the nut or stud on the body sheet metal.
- the charging interface body 1 is provided with an installation groove, and the installation groove is provided with at least one latch claw, and at least part of the electrical connection device 3 is clamped in the installation groove by the latch claw.
- the snap-in claw can quickly and easily fix the electrical connection device 3 in the installation slot. After being fixed, the electrical connection device 3 will not protrude from the surface of the charging interface body 1, which can prevent the electrical connection device 3 from affecting the interior of the car. Installation of other equipment.
- the charging interface body 1 is provided with an installation groove, and the installation groove is provided with at least one latch claw, and at least part of the electrical connection device 3 and at least part of the grounding device 4 are locked in the installation groove by the latch claw. After being fixed, the electrical connection device 3 and the grounding device 4 will not protrude from the surface of the charging interface body 1, thereby reducing the occupied space and not hindering the arrangement of other devices.
- At least part of the electrical connection device 3 is integrally injection molded into the charging interface body 1 . Since the connection between the electrical connection device 3 and the charging interface body 1 needs to be provided with a sealing structure, if the electrical connection device 3 is integrally injection molded into the charging interface body 1, not only will the sealing structure be omitted, but it will also be better waterproof and dustproof. Effect.
- at least part of the electrical connection device 3 and at least part of the grounding device 4 are integrally injection molded into the charging interface body 1 . In this way, the sealing at the grounding device 4 can be omitted. It can also save the installation process of the electrical connection device 3 and the grounding device 4 and save installation man-hours. It can also provide overall protection for the electrical connection device 3 and the grounding device 4 to avoid damage to the electrical connection device 3 and the grounding device 4, and prolong the grounding of the charging interface. The service life of the structure.
- the electrical connection device 3 is made of rigid material, and the material of the electrical connection device contains copper or aluminum. That is, the electrical connection device 3 is composed of a solid wire.
- the specific material can be copper or copper alloy, aluminum or aluminum alloy with excellent electrical conductivity. It can be fixed on the car and will not vibrate with the car shell or the charging interface body 1 friction, extending service life and reducing the incidence of accidents. Copper has good electrical conductivity, thermal conductivity, and plasticity and is widely used. However, copper resources are in short supply and copper costs are high. For this reason, people began to look for alternatives to copper to reduce costs. The price of aluminum is relatively low, and it also has excellent electrical conductivity, thermal conductivity and plastic workability. Therefore, replacing copper with aluminum is the main development trend at present.
- the price of metallic aluminum is lower than that of metallic copper, and it also has excellent electrical conductivity, thermal conductivity and plastic processability. Under the same conduction current, the weight of aluminum wire harness is about one-third that of copper wire harness.
- the electrical connection device 3 is made of conductive plastic material and is disposed on the charging interface body 1 through extrusion, injection molding, dip molding, blow molding, foaming, or 3D printing.
- the conductive plastic material is lighter and can reduce the weight of the entire vehicle, and the electrical connection device 3 can be integrally formed with the charging interface body 1, saving the installation process of the electrical connection device 3 and the grounding device 4, saving installation man-hours, and also allowing for The electrical connection device 3 and the grounding device 4 are integrally protected to prevent the electrical connection device 3 and the grounding device 4 from being damaged and extend the service life of the charging interface grounding structure.
- the electrical connection device 3 is integrally injection molded into the charging interface body 1, which not only eliminates the need for a sealing structure, but also provides better waterproof and dustproof effects.
- Extrusion is a pressure processing method that uses a punch or punch to pressurize the blank placed in the concave mold to cause plastic flow, thereby obtaining a part corresponding to the shape of the mold hole or concave and convex mold.
- Injection molding process refers to the process of making semi-finished parts of a certain shape from molten raw materials through operations such as pressurization, injection, cooling, and separation.
- the plastic dipping process refers to a process in which the workpiece is electrically heated to reach a certain temperature, immersed in the plastic dipping liquid, and allowed to solidify on the workpiece.
- the blow molding process is to use an extruder to extrude a tubular parison, put it into a mold while it is hot, and blow it with compressed air to achieve the shape of the mold cavity. After cooling and shaping, the product is obtained.
- the advantages of this process are: it is suitable for a variety of plastics, can produce large-scale products, has high production efficiency, more uniform parison temperature and less equipment investment.
- the foaming process refers to the formation of a honeycomb or porous structure through the addition and reaction of physical foaming agents or chemical foaming agents in the foaming molding process or foamed polymer materials.
- the basic steps of foam molding are the formation of bubble cores, the growth or expansion of bubble cores, and the stabilization of bubble cores. Under given temperature and pressure conditions, the solubility of the gas decreases until it reaches a saturated state, allowing excess gas to be eliminated and bubbles formed, thereby achieving nucleation.
- the 3D printing process is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses adhesive materials such as powdered metal or plastic to construct objects through layer-by-layer printing based on digital model files. .
- At least part of the electrical connection device 3 is made of flexible material.
- the flexible material can ensure that the electrical connection device 3 can make a larger bending angle to facilitate installation in a relatively large corner area.
- the flexible material is a multi-core cable or a braided cable or a flexible cable stacked with multiple layers of sheets.
- Multi-core cables and braided cables are flexible, easy to bend and have excellent electrical conductivity.
- the texture of the soft row stacked with thin plates is soft and easy to deform, and it is also suitable for flexible materials.
- the electrical connection device 3 has at least one bend.
- the bending portion is used to meet the need for the electrical connection device 3 to be installed on the vehicle body.
- the number of the bending portions can be set according to the specific assembly environment. The number can be, for example, 1, 2, 3, 4 or more.
- the electrical connection device 3 when the electrical connection device 3 is installed in the charging stand body 1 , the electrical connection device 3 can be made to avoid part of the structure in the charging stand body 1 , or the electrical connection device 3 can be arranged based on the shape of the charging stand body 1 .
- the first ground terminal 131 and/or the second ground terminal 141 have different cross-sectional areas than the electrical connection device 3 .
- the specifications of the first ground terminal 131 and the second ground terminal 141 must meet the existing standards of the charging stand. Since they need to be connected with the opposite plug terminal, the contact area is relatively small, the contact resistance is large, and the heat generated by the terminals is large. , therefore the cross-sectional areas of the first ground terminal 131 and the second ground terminal 141 are required to be relatively large to meet the heat dissipation requirements. beg.
- the electrical connection device 3 only conducts ground current and has a large contact area with the first ground terminal 131 and the second ground terminal 141 and the ground device 4.
- the cross-sectional area of the electrical connection device 3 only needs to meet the usage requirements. Therefore, when the inventor selects the cross-sectional area of the first ground terminal 131 , the second ground terminal 141 and the electrical connection device 3 , the cross-sectional area of the first ground terminal 131 and the second ground terminal 141 will be larger than that of the electrical connection device 3 cross-sectional area.
- the first ground terminal 131 and/or the second ground terminal 141 have different cross-sectional shapes from the electrical connection device 3 .
- the first ground terminal 131 and the second ground terminal 141 need to be connected to the mating terminal in plug-in and pull-out contact, so they are generally cylindrical or have a socket-shaped terminal structure.
- the electrical connection device 3 only conducts the ground current, so it can be connected according to the
- the charging stand body 1 is arranged in a circular, polygonal or rectangular cross-sectional shape.
- the first ground terminal 131 and/or the second ground terminal 141 are made of different materials from the electrical connection device 3 . Since the first ground terminal 131 and the second ground terminal 141 need to be connected with the opposite plug terminal in plug-in and pull-out contact, the contact resistance should be as small as possible, so the first ground terminal 131 and the second ground terminal 141 are often made of relatively expensive copper or copper. Alloy to ensure corrosion resistance and conductivity of the contact surface. The amount of the electrical connection device 3 is relatively large, and the conductivity requirement is not high. Therefore, if the demand is met, the material of the electrical connection device 3 can be different from the first ground terminal 131 and the second ground terminal 141, and the price can be adopted. The lower aluminum or aluminum alloy material saves the cost of the electrical connection device 3.
- the first ground terminal 131 and/or the second ground terminal 141 and the electrical connection device 3 have different metal crystal structures. Since the first ground terminal 131 and the second ground terminal 141 need to be connected to the mating terminal in plug-in and pull-out contact, the first ground terminal 131 and the second ground terminal 141 need to have a certain degree of flexibility so that they can be connected to the mating terminal multiple times. After plugging and unplugging, a large gripping force is still maintained to ensure the actual contact area between the first ground terminal 131 and the second ground terminal 141 and the mating terminal, thereby reducing the contact resistance.
- the first ground terminal 131 and the second ground terminal 141 also use hot forging and machining to process the first ground terminal 131 and the second ground terminal 141.
- the metal crystal structure of the first ground terminal 131 and the second ground terminal 141 is made dense, thereby reducing internal stress and ensuring the elasticity of the raw materials of the first ground terminal 131 and the second ground terminal 141.
- the electrical connection device 3 is only fixed inside the charging base body 1 to conduct electricity. It does not require good mechanical properties and does not have high requirements on material and processing. Therefore, it is generally cut and stamped from rolled plates.
- the electrical connection device 3 The metal crystal structure is relatively loose and the internal stress will be relatively large. Therefore, due to different functional requirements, different structures can be selected for the internal metal crystal structures of the first ground terminal 131 and the second ground terminal 141 and the electrical connection device 3 to reduce material costs, optimize processing techniques, and reduce the cost of the charging stand.
- the electrical connection device 3 includes at least two differently shaped cross-sections.
- the cross-section of the electrical connection device 3 is set in various shapes, which can be used in different installation environments and can better match the electrical connection device 3 with the vehicle body.
- the cross-sectional shape of the electrical connection device 3 may be circular, oval, rectangular, polygonal, A Shape, B shape, D shape, M shape, N shape, O shape, S shape, E shape, F shape, H shape, K shape, L shape, T shape, P shape, U shape, V shape, W shape, One or more of X-shape, Y-shape, Z-shape, semi-arc shape, arc shape, and wavy shape. In actual use, electrical connection devices 3 with different cross-sections can be used as needed.
- the cross-sectional shape of the electrical connection device 3 is a polygon, and the corners of the polygon are all rounded or chamfered.
- the edges and corners can be rounded or chamfered to prevent the sharp parts from causing damage to the insulation layer.
- the electrical connection device 3 is provided with an insulating layer.
- the function of the insulating layer is to insulate the contact between the electrical connection device 3 and the conductive material on the vehicle body, so as to avoid short circuit caused by the contact between the two.
- the insulation layer is made of polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene/hexafluoropropylene copolymer, ethylene/tetrafluoroethylene copolymer, polypropylene, polyvinylidene Ethylene fluoride, polyurethane, polyterephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxyalkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, cross-linked polyolefin, Ethylene-propylene rubber, ethylene/vinyl acetate copolymer, natural rubber, styrene-butadiene rubber, nitrile rubber, silicone rubber, butadiene rubber, isoprene rubber, ethylene-propylene rubber, chloroprene rubber, butyl rubber, fluorine rubber, polyvinyl chlor
- the side walls of the AC charging core 13 and/or the DC charging core 14 are provided with mounting holes, and the first end 31 and/or the second end 32 pass through the mounting holes to connect with the first ground terminal 131 and/or the second
- the ground terminal 141 is electrically connected.
- the electrical connection device 3 is connected to the first ground terminal 131 and the second ground terminal 141 through the installation hole, which can reduce the length of the electrical connection device 3 and reduce the weight of the entire vehicle.
- the electrical connection device 3 also includes a transition connector 5. As shown in Figure 4, one end of the transition connector 5 is connected to the electrical connection device 3, and the other end passes through the installation hole and is connected to the first ground terminal 131 and/or The second ground terminal 141 is electrically connected.
- the first ground terminal 131 and the second ground terminal 141 can be electrically connected to the electrical connection device 3 by adjusting the angle of the transition connector 5 or selecting different lengths.
- the charging base has a complex structure and many lines.
- the first ground terminal 131 or the second ground terminal 141 is provided in various parts, making it difficult to directly connect to the electrical connection device 3 . In this case, the transition connector 5 is used for connection.
- the specific shape and size of the transition connector 5 can be designed according to the actual assembly environment in the charging base, so that one end of the transition connector 5 is connected to the first ground terminal 131 or the second ground terminal 141 , the other end is connected to the electrical connection device 3.
- the installation steps can be reduced, man-hours can be saved, maintenance can be facilitated, and the installation speed can be increased.
- the sealing member 6 is sleeved on the first end 31 and/or the second end 32 and/or the transition connector 5. As shown in FIG. 2, the sealing member 6 is connected with the installation hole with an interference fit.
- water or dust can be prevented from entering the AC charging core 13 and/or the DC charging core 14 through the mounting holes. avoid To prevent water or dust from damaging the electronic components of the charging interface body 1, reducing the safety of the charging interface grounding structure, or even causing damage to the charging interface grounding structure, the seal 6 can greatly extend the service life of the charging interface grounding structure.
- the embodiment of the second aspect of the present application also provides a vehicle, including a vehicle ground terminal and a charging interface grounding structure as above.
- the charging interface body 1 is fixed on the vehicle through a fixing frame 12, and the grounding device 4 is electrically connected to the vehicle ground terminal. connect.
- the fixing bracket 12 makes the setting of the charging socket interface body 1 more stable, so that the charging interface body 1 can be more conveniently plugged into the charging device to realize charging of the vehicle.
- the grounding device 4 is generally arranged near the fixed frame 12, and a shorter electrical connection device 3 can be used to achieve electrical connection with the vehicle ground terminal, saving the usage of the electrical connection device 3 and reducing the cost of the charging interface grounding structure.
- a plurality of fixing holes 121 are provided on the fixing frame.
- the fixing holes 121 are detachably connected to the vehicle through a bolt structure, and the grounding device 4 is arranged in one of the fixing holes 121, as shown in Figure 4.
- the fixing bracket 12 is arranged on the vehicle shell through a bolt structure and a fixing hole 121 to facilitate replacement.
- the grounding device 4 is connected to a fixing hole 121, and the electrical connection device 3 can be more firmly installed in the vehicle body without having to design a separate connecting piece. At the same time, there is no need to lead the cable to the outside of the charging interface body and then connect it to the ground terminal.
- the first ground terminal and the second ground terminal are electrically connected to the same electrical connection device at the same time. In this way, one electrical connection device simultaneously grounds the ground terminals of the two charging cores, which reduces parts and simplifies the process.
- the electrical connection device 3 at least partially extends outside the charging interface body 1 and is electrically connected to the vehicle ground terminal through the grounding device 3 .
- This enables the charging interface to be grounded in connection with the vehicle ground terminal.
- the grounding device 4 is generally arranged near the fixed frame 12, and a shorter electrical connection device 3 can be used to achieve electrical connection with the vehicle ground terminal, saving the usage of the electrical connection device 3 and reducing the cost of the charging interface grounding structure.
- the electrical connection device 3 at least partially extends out of the charging interface body 1 so that the connection status of the ground terminal can be easily checked.
- the electrical connection device 3 extending out of the charging interface body 1 can be made of flexible material, which can absorb the impact of the vibration of the vehicle ground terminal on the electrical connection device 3, avoid damage to the charging interface body 1 due to vehicle vibration, and extend the charging interface. The service life of body 1.
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
一种充电接口接地结构及车辆，属于新能源汽车电路技术领域，包括：充电接口本体，电连接装置和接地装置，充电接口本体包括交流充电内核和直流充电内核，交流充电内核内设置第一接地端子，直流充电内核内设置第二接地端子；接地装置与充电系统或车辆系统的接地端电连接；电连接装置包括第一端、第二端和第三端，第一端与第一接地端子电连接，第二端与第二接地端子电连接，第三端与接地装置电连接。电连接装置作为接地传输载体，可以减小线缆直径，减轻线缆重量，使线缆安装方便，减少与车壳的摩擦。第一接地端子和第二接地端子同时与同一个电连接装置电连接，这样一根电连接装置同时为两个充电内核的接地端子进行接地，减少了零件，简化了工序。
Description
相关申请
本申请要求于2022年05月03日递交的申请号为202210477232.0的中国发明专利申请的优先权，并引用上述专利申请公开的全部内容作为本申请的一部分。
本申请属于新能源汽车电路技术领域，更具体地，涉及一种充电接口接地结构及车辆。
在能源和环境的双重压力下，电动汽车的研究开发再次进入了一个活跃期。随着各种科学技术的高速发展，电动汽车的许多技术难点逐渐得到了解决。世界各大汽车制造商纷纷推出各自的电动汽车产品。充电桩、充电枪和充电接口是电动汽车的主要充电装置。充电装置标准中要求，所有的充电装置中，必须设置PE线。PE线是充电装置的接地线，用于出现漏电时对设备和人的保护。在充电接口设计过程中，接地系统往往需要多个连接部件，通常是交流与直流的PE端子分别压接铜线的一端，由铜线另一侧再压接端子，以实现进行接地。这种设计在压接PE端子及另一端子时就需要铜线已经穿过充电接口壳体，带着充电接口壳体一起压接端子。铜线穿过后充电接口壳体需要增加密封圈及密封圈扣盖，并且两个接地得打钉固定到车身钣金上进行接地。结构复杂，安装和加工费时费力，而且容易出现连接错误，造成短路损坏车身线路，甚至导致设备漏电，导致人员触电伤亡的风险。因此，现有技术中亟需一种新的方案来解决上述问题。
发明内容
本申请针对现有技术的问题，提供一种充电接口接地结构及车辆，以将交直流的接地端子连接到车身钣金，实现充电接口的接地。
本申请第一方面的实施例提供一种充电接口接地结构，其特征在于，包括：
充电接口本体，电连接装置和接地装置，所述充电接口本体包括交流充电内核和直流充电内核，所述交流充电内核内设置第一接地端子，所述直流充电内核内设置第
二接地端子；
所述接地装置与充电系统或车辆系统的接地端电连接；以及
所述电连接装置包括第一端、第二端和第三端，所述第一端与所述第一接地端子电连接，所述第二端与所述第二接地端子电连接，所述第三端与所述接地装置电连接。
本申请第二方面的实施例提供一种车辆，包括车辆接地端和如上所述的一种充电接口接地结构，所述充电接口本体通过固定架固定在所述车辆上，所述接地装置与所述车辆接地端电连接。
本申请具有以下技术效果：电连接装置作为接地传输载体，可以减小线缆直径，减轻线缆重量，使线缆安装方便，减少与车壳的摩擦。第一接地端子和第二接地端子同时与同一个电连接装置电连接，这样一根电连接装置同时为两个充电内核的接地端子进行接地，减少了零件，简化了工序。嵌件可以设计成与电连接装置外形相匹配的结构，避免接地端子因为形状的关系与电连接装置连接不牢固。电连接装置一体注塑在充电接口本体内，不但省去了密封结构，而且能起到更好的防水防尘效果。
通过以下参照附图对本申请的示例性实施例的详细描述，本申请的其它特征及其优点将会变得清楚。
被结合在说明书中并构成说明书的一部分的附图示出了本申请的实施例，并且连同其说明一起用于解释本申请的原理。
图1为本申请实施例的一种充电接口接地结构的结构示意图。
图2为本申请另一实施例的一种充电接口接地结构的螺栓示意图。
图3为本申请实施例的一种充电接口接地结构的嵌件示意图。
图4为本申请实施例的一种充电接口接地结构的过渡连接件示意图。
图中标示如下：
1-充电接口本体、12-固定架、121-固定孔、13-交流充电内核、131-第一接地端
子、14-直流充电内核、141-第二接地端子、21-螺栓、3-电连接装置、31-第一端、311-嵌件、32-第二端、33-第三端、4-接地装置、5-过渡连接件、6-密封件。
1-充电接口本体、12-固定架、121-固定孔、13-交流充电内核、131-第一接地端
子、14-直流充电内核、141-第二接地端子、21-螺栓、3-电连接装置、31-第一端、311-嵌件、32-第二端、33-第三端、4-接地装置、5-过渡连接件、6-密封件。
现在将参照附图来详细描述本申请的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限
制本申请的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，上述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
本申请第一方面的实施例提供一种充电接口接地结构，如图1所示，包括：
充电接口本体1，电连接装置3和接地装置4，充电接口本体1包括交流充电内核13和直流充电内核14，交流充电内核13内设置第一接地端子131，直流充电内核14内设置第二接地端子141；
接地装置4与充电系统或车辆系统的接地端电连接；
电连接装置包括第一端31、第二端32和第三端33，第一端31与第一接地端子131电连接，第二端32与第二接地端子141电连接，第三端33与接地装置4电连接。
现在的电动汽车的充电接口一般都同时包括充电效率更高的直流充电内核14和环境适应性强的交流充电内核13，无论哪种充电接口都有接地端子，用于在出现漏电时对设备和人的保护。本申请提供的结构中，第一接地端子131和第二接地端子141同时与同一个电连接装置3电连接，连接方式可以为直接焊接，也可以通过其他导体进行导电连接，电连接装置3的第三端33再与接地装置4连接，这样一根电连接装置3同时为两个充电内核的接地端子进行接地，节省了用料。电连接装置3作为接地传输载体，可以减小线缆直径，减轻线缆重量，使线缆安装方便，减少与车壳的摩擦。电连接装置3将交直流的接地端子连接到一起，进而与车身钣金打钉位置连接，实现充电的接地。此申请不需要进行接地端子的压线，解决了连接导线与端子的操作费时费力的问题。不需要单独进行接地线的打钉；没有连接导线，节约了安装时间，提高了工作效率，并减少零件数量。
在一些实施例中，第一端31和/或第二端32与第三端33连接。在具体使用时，可以根据装配环境将第一端31与第三端33连接，或者将第二端32与第三端33连接，只要保证第一端31和第二端32分别与第三端33连通即可。第一端31和第二端32同时与第三端33连接，实现接地回路的导通，或者第一端31和第二端32先进行连接，再与第三端33连接。可以根据具体的装配环境，选择合理的连接方式，本说明书对此不做限定。
在一些实施例中，电连接装置3至少部分设置在充电接口本体1中。电连接装置3伸入充电接口本体1中，在充电接口本体1中与第一接地端子131及第二接地端子141连接。不需要引线缆到充电接口本体1外再与接地端连接，而是直接与充电接口本体1固定位置的接地端连接，节省线缆，减少安装的零件与步骤，降低安装工时，节省充电接口接地结构的成本。
在一些实施例中，第一端31与第一接地端子131通过压接或焊接或铆接或螺接或插接的方式连接，第二端32与第二接地端子141通过压接或焊接或铆接或螺接或插接的方式连接。焊接方式包括电阻焊接、摩擦焊接、超声波焊接、弧焊、激光焊接、电子束焊接、压力扩散焊接、磁感应焊接的一种或多种。
电阻焊接方式的原理是指利用强大电流通过电极和至少两个工件，在工件间产生电阻热，从而基于该电阻热实现在工件间焊接。
摩擦焊方式的原理是指利用工件之间接触面摩擦产生的热量为热源，使工件在压力作用下产生塑性变形而进行焊接。
超声波焊接方式的原理是利用高频振动波传递到两个需焊接的物体表面，在加压的情况下，使两个物体表面相互摩擦，从而形成分子层之间的熔合，以对该两个物体进行焊接。
弧焊方式的原理是指以电弧作为热源，利用空气放电的物理现象，将电能转换为焊接所需的热能和机械能，从而达到连接金属的目的，其主要方法例如可以为焊条电弧焊、埋弧焊和气体保护焊等。
激光焊接方式，是利用高能量密度的激光束作为热源的一种高效精密焊接方法。
电子束焊接方式的原理是指利用加速和聚焦的电子束轰击置于真空或非真空中的焊接面，使被焊工件熔化实现焊接。
压力焊接方式的原理是对焊件施加压力，使接合面紧密地接触产生一定的塑性变形而完成焊接。
磁感应焊接方式的原理是两个被焊工件在强脉冲磁场作用下，产生瞬间高速碰撞，材料表层在很高的压力波作用下，使两种材料的原子在原子间距离内相遇，从而在界面上形成稳定的冶金结合。磁感应焊接是固态冷焊的一种，可以将属性相似或不相似的传导金属焊接在一起。
压接方式，是将电连接装置3与第一接地端子131或第二接地端子141装配后，使用压接机，将两者冲压为一体的生产工艺。压接的优点是量产性，通过采用自动压接机能够迅速大量的制造稳定品质的产品。
铆接方式是采用铆钉将被连接件连成一体的可拆卸连接。
螺接方式，是指螺纹连接，具体为用螺纹件(或被连接件的螺纹部分)将被连接件连成一体的可拆卸连接。铆接方式是采用铆钉将被连接件连成一体的可拆卸连接。
插接方式，要连接的两部分的接触面一个设置插销一个设置插口，通过插销和插口装配在一起。
在一些实施例中，第一端31与第一接地端子131通过螺纹结构可拆卸连接，和/或，第二端32与第二接地端子141通过螺纹结构可拆卸连接。采用螺纹连接方便拆卸，可以在接地端子需要更换时，直接将第一接地端子131或第二接地端子141和电连接装置3分开，省时省力。
在一些实施例中，可拆卸连接包括螺栓21，如图2所示，第一端31和/或第二端32上设置通孔，第一接地端子131和/或第二接地端子141的端面上分别设置第一螺纹孔，螺栓21穿过通孔并与第一螺纹孔螺纹连接。螺栓21穿过通孔与第一螺纹孔螺接，从而完成第一接地端子131及第二接地端子141和电连接装置3的装配。
在一些实施例中，第一接地端子131和/或第二接地端子141的一端设置螺柱，第一端31和/或第二端32分别设置第二螺纹孔，螺柱与第二螺纹孔螺纹连接。通过螺柱与第二螺纹孔螺接完成第一接地端子131及第二接地端子141和电连接装置3的装配。
在一些实施例中，第一接地端子131和/或第二接地端子141的一端设置螺柱，第一端和/或第二端上分别设置嵌件311，如图3所示，嵌件311内设置第三螺纹孔，螺柱与第三螺纹孔螺纹连接。嵌件311可以采用焊接的方式与电连接装置3连接，也可以采用可拆卸连接的方式进行连接。在本实施例中，由于嵌件311可以被设计成与电连接装置3外形相匹配的结构，避免第一接地端子131及第二接地端子141因为形状的原因与电连接装置3连接不牢固。
在一些实施例中，第三端33和接地装置4为一体结构，所述接地装置4上设置接地通孔或接地点。一体结构免去了额外的安装环节，只需通过接地通孔或接地点将接地装置4与车身钣金件连接，就可以完成接地。通孔或接地点可以快速方便的与车身的钣金连接进行接地，通孔可以设计成螺接或铆接，例如可以为穿过螺栓或铆钉；接地点可以是焊接点、压接点或插接结构。
在一些实施例中，第三端33和接地装置4压接或焊接或铆接或螺接或插接连接，接地装置4为螺柱结构或螺母结构。具体的连接的方式如前述，接地装置4为螺柱或螺母能够方便的与车身钣金上的螺母或螺柱完成螺接。
在一些实施例中，充电接口本体1上设置安装槽，安装槽上设置至少一个卡接爪，至少部分电连接装置3被卡接爪卡接在安装槽内。如图4所示，卡接爪能够方便快捷地将电连接装置3固定在安装槽内，固定后，电连接装置3不会突出充电接口本体1的表面，能够防止电连接装置3影响车内其他设备的安装。
在一些实施例中，充电接口本体1上设置安装槽，安装槽上设置至少一个卡接爪，至少部分电连接装置3和至少部分接地装置4被卡接爪卡接在安装槽内。固定后，电连接装置3和接地装置4不会突出充电接口本体1的表面，减少占用空间，不妨碍其他器件的布置。
在一些实施例中，至少部分电连接装置3被一体注塑在充电接口本体1内。由于电连接装置3与充电接口本体1的连接处需要设置密封结构，如果将电连接装置3一体注塑在充电接口本体1内，不但省去了密封结构，而且能起到更好的防水防尘效果。在一些实施例中，至少部分电连接装置3和至少部分接地装置4被一体注塑在充电接口本体1内。这样不但可以省去接地装置4处的密封。还能节省电连接装置3和接地装置4的安装工序，节省安装工时，还可以对电连接装置3和接地装置4进行整体保护，避免电连接装置3和接地装置4受到损伤，延长充电接口接地结构的使用寿命。
在一些实施例中，电连接装置3材质为刚性材料，电连接装置材质中含有铜或铝。即电连接装置3由一根实心导线构成，具体材质可以为导电性能优良的铜或铜合金，铝或铝合金，能够固定在车上，不会随着汽车振动与车壳或充电接口本体1摩擦，延长使用寿命，减少事故发生率。铜具有良好的导电性、导热性、塑性而被广泛应用。然而，铜资源短缺，铜成本高。为此，人们开始寻找铜的替代品来降低成本。铝价格相对较低，且同样具有优良的导电性、导热和塑性加工性，因此，以铝代铜是目前发展的主要趋势，但是铝的某些性能还是不如铜优异，许多构件仍然不能完全以铝代铜，因此存在铝构件和铜构件之间的接头连接情况。例如，由铝类材料构成电连接装置3价格低重量轻完全能够满足需求，端子使用性能更好价格更贵的铜来制作。
金属铝价格相对金属铜较低，且同样具有优良的导电性、导热和塑性加工性，在相同的导通电流情况下，铝线束的重量约为铜线束的三分之一。
在一些实施例中，电连接装置3材质为导电塑性材料，通过挤出或注塑或浸塑或吹塑或发泡或3D打印的方法设置在充电接口本体1上。导电塑性材料具有更轻的材质能够减轻整车的重量，并且电连接装置3可以与充电接口本体1一体加工成型，节省电连接装置3和接地装置4的安装工序，节省安装工时，还可以对电连接装置3和接地装置4进行整体保护，避免电连接装置3和接地装置4受到损伤，延长充电接口接地结构的使用寿命。
电连接装置3一体注塑在充电接口本体1内，不但省去了密封结构，而且能起到更好的防水防尘效果。
挤出，是用冲头或凸模对放置在凹模中的坯料加压，使之产生塑性流动，从而获得相应于模具的型孔或凹凸模形状的制件的一种压力加工方法。
注塑工艺是指将熔融的原料通过加压、注入、冷却、脱离等操作制作一定形状的半成品件的工艺过程。
浸塑工艺是指通过工件电加热后，达到一定的温度，浸到浸塑液里面去，让浸塑液固化在工件上的工艺过程。
吹塑工艺是用挤出机挤出管状型坯，趁热放入模具中，并通入压缩空气进行吹胀以使其达到模腔形样，冷却定型后即得制品。该工艺的优点是：适用于多种塑料，能生产大型制品、生产效率高，型坯温度较均匀和设备投资较少等。
发泡工艺是指在发泡成型过程或发泡聚合物材料中，通过物理发泡剂或化学发泡剂的添加与反应，形成了蜂窝状或多孔状结构。发泡成型的基本步骤是形成泡核、泡核生长或扩大以及泡核的稳定。在给定的温度与压力条件下，气体的溶解度下降，以致达到饱和状态，使多余的气体排除并形成气泡，从而实现成核。
3D打印工艺是快速成型技术的一种，又称增材制造，是一种以数字模型文件为基础，运用粉末状金属或塑料等可粘合材料，通过逐层打印的方式来构造物体的技术。
在一些实施例中，至少部分电连接装置3为柔性材质。柔性材质能够保证电连接装置3能够做出较大的折弯角度，以方便设置在拐角比较大的区域。
在一些实施例中，柔性材质为多芯线缆或编织线缆或多层薄板叠加的软排。多芯线缆和编织线缆具有柔性，易折弯且导电性能优良。薄板叠加的软排质地较软容易形变，也适合做柔性材质。
在一些实施例中，电连接装置3具有至少一个弯折部。折弯部用于满足电连接装置3安装在车体的需要，可以根据具体的装配环境设置弯折部的数量，该数量例如可以为1、2、3、4或者更多。同时，在电连接装置3设置于充电座本体1内时，可以使电连接装置3能够避让充电座本体1内的部分结构，也可以基于充电座本体1的形状，进行电连接装置3的布置。
在一些实施例中，第一接地端子131和/或第二接地端子141与电连接装置3的横截面积不同。第一接地端子131和第二接地端子141的规格要满足充电座的既有标准，由于需要与对插端子插拔接触连接，接触面积相对较小，接触电阻较大，端子的发热量较大，因此第一接地端子131和第二接地端子141的截面积要求相对大一些，来满足散热量的要
求。电连接装置3只是导通接地电流，与第一接地端子131和第二接地端子141及接地装置4接触面积也较大，因此电连接装置3的横截面积只需要满足使用需要即可。所以，发明人在选用第一接地端子131、第二接地端子141和电连接装置3的横截面积时，会使第一接地端子131和第二接地端子141的横截面积大于电连接装置3的横截面积。
在一些实施例中，第一接地端子131和/或第二接地端子141与电连接装置3的横截面形状不同。第一接地端子131和第二接地端子141需要与对插端子插拔接触连接，因此一般为圆筒形或带有插口状的端子结构，电连接装置3只是导通接地电流，因此可以根据在充电座本体1的布置状态，采用圆形或多边形或矩形的横截面形状。
在一些实施例中，第一接地端子131和/或第二接地端子141与电连接装置3的材质不同。由于第一接地端子131和第二接地端子141需要与对插端子插拔接触连接，接触电阻要尽量的小，因此第一接地端子131和第二接地端子141往往采用价格比较高的铜或铜合金，保证接触面的耐腐蚀性和导电性。而电连接装置3的用量比较大，且对导电率要求不高，所以在满足需求的情况下，电连接装置3的材质可以和第一接地端子131和第二接地端子141不同，可以采用价格较低的铝或铝合金材质，节省电连接装置3的成本。
在一些实施例中，第一接地端子131和/或第二接地端子141与电连接装置3具有的金属晶体结构不同。由于第一接地端子131和第二接地端子141需要与对插端子插拔接触连接，因此需要第一接地端子131和第二接地端子141具备一定的弹性，才可以在与对插端子多次的插拔后，依然保持较大的抓紧力，保证第一接地端子131和第二接地端子141与对插端子的实际接触面积，降低接触电阻。所以第一接地端子131和第二接地端子141除了选用弹性较高的铜材质作为原材料之外，还会采用热锻和机加工的方式，来加工第一接地端子131和第二接地端子141，使第一接地端子131和第二接地端子141的金属晶体结构紧密，减小内部的应力，保证第一接地端子131和第二接地端子141原材料的弹性。而电连接装置3只是固定在充电座本体1内部起到导电作用，不需要较好的力学性能，对材质和加工要求不高，因此一般使用轧制板材切割冲压成型的，电连接装置3的金属晶体结构较疏松，内部应力也会比较大。因此，由于功能要求不同，第一接地端子131和第二接地端子141和电连接装置3的内部金属晶体结构可以选用不同的结构，以降低材料成本，优化加工工艺，降低充电座的成本。
在一些实施例中，电连接装置3包括至少两个形状不同的横截面。电连接装置3的横截面设置为各种形状，能够使用在不同的安装环境中，能够使电连接装置3与车身更加匹配。
在一些实施例中，电连接装置3的截面形状可以为圆形、椭圆形、矩形、多边形、A
形、B形、D形、M形、N形、O形、S形、E形、F形、H形、K形、L形、T形、P形、U形、V形、W形、X形、Y形、Z形、半弧形、弧形、波浪形中的一种或多种。在实际使用中可以根据需要采用不同截面的电连接装置3。
在一些实施例中，电连接装置3截面形状为多边形，多边形的角全部倒圆或倒角。当电连接装置3的截面具有棱角时，可以对棱角进行倒圆或者倒角，防止其尖锐的部分对绝缘层造成损伤。
在一些实施例中，电连接装置3外设有绝缘层。绝缘层的作用是绝缘电连接装置3与车身上导电材质的接触，避免由于二者的接触导致短路。在具体的实施例中，绝缘层的材质含有聚氯乙烯、聚乙烯、聚酰胺、聚四氟乙烯、四氟乙烯/六氟丙烯共聚物、乙烯/四氟乙烯共聚物、聚丙烯、聚偏氟乙烯、聚氨酯、聚对苯二甲酸、聚氨酯弹性体、苯乙烯嵌段共聚物、全氟烷氧基烷烃、氯化聚乙烯、聚亚苯基硫醚、聚苯乙烯、交联聚烯烃、乙丙橡胶、乙烯/醋酸乙烯共聚、天然橡胶、丁苯橡胶、丁腈橡胶、硅橡胶、顺丁橡胶、异戊橡胶、乙丙橡胶、氯丁橡胶、丁基橡胶、氟橡胶、聚氨酯橡胶、聚丙烯酸酯橡胶、氯磺化聚乙烯橡胶、氯醚橡胶、氯化聚乙烯橡胶、氯硫橡胶、苯乙烯丁二烯橡胶、丁二烯橡胶、氢化丁腈橡胶、聚硫橡胶、交联聚乙烯、聚碳酸酯、聚砜、聚苯醚、聚酯、酚醛树脂、脲甲醛、苯乙烯-丙烯腈共聚物、聚甲基丙烯酸酯、聚甲醛树酯中的一种。
在一些实施例中，交流充电内核13和/或直流充电内核14的侧壁设置安装孔，第一端31和/或第二端32穿过安装孔与第一接地端子131和/或第二接地端子141电连接。电连接装置3穿过安装孔与第一接地端子131和第二接地端子141连接，能够减少电连接装置3的长度，减轻整车重量。
在一些实施例中，电连接装置3还包括过渡连接件5，如图4所示，过渡连接件5一端与电连接装置3连接，另一端穿过安装孔与第一接地端子131和/或第二接地端子141电连接。设置过渡连接件5，可以通过调整过渡连接件5的角度或选择不同的长度使第一接地端子131和第二接地端子141与电连接装置3电连接。很多时候，充电座内结构复杂，线路很多，第一接地端子131或第二接地端子141在各种零件中设置，很难直接与电连接装置3连接。在此种情况下，采用过渡连接件5进行连接，可以根据充电座内的实际装配环境设计过渡连接件5的具体形状和尺寸，使其一端与第一接地端子131或第二接地端子141连接，另一端与电连接装置3连接。通过设置过渡连接件5可以减少安装步骤，节约工时，方便维修，增加安装速度。在一些实施例中，第一端31和/或第二端32和/或过渡连接件5上套设密封件6，如图2所示，密封件6与安装孔过盈配合连接。通过设置密封件6，能够防止水或灰尘通过安装孔进入交流充电内核13和或直流充电内核14内。避
免水或灰尘对充电接口本体1的电子器件造成损伤，降低充电接口接地结构的使用安全性，甚至造成充电接口接地结构损坏，密封件6能够极大的延长充电接口接地结构的使用寿命。
本申请第二方面的实施例还提供了一种车辆，包括车辆接地端和如上的一种充电接口接地结构，充电接口本体1通过固定架12固定在车辆上，接地装置4与车辆接地端电连接。固定架12使充电座接口本体1的设置更稳固，使充电接口本体1能够更加方便的与充电装置对插，实现车辆的充电。接地装置4一般设置在固定架12的附近，可以使用较短的电连接装置3就能实现与车辆接地端的电连接，节省电连接装置3的使用量，降低充电接口接地结构的成本。
进一步的，固定架上设置多个固定孔121，固定孔121通过螺栓结构与车辆可拆卸连接，接地装置4设置在其中一个固定孔121内，如图4所示。固定架12通过螺栓结构与固定孔121配合设置在车壳上，方便更换。接地装置4与一个固定孔121连接，不用单独设计连接件，也能使电连接装置3更牢固的设置在车身内。同时不需要引线缆到充电接口本体外再与接地端连接，直接与充电接口本体固定位置的接地端连接，节省线缆，减少安装的零件与步骤，降低安装工时，节省充电接口接地结构的成本。还可以减小线缆直径，减轻线缆重量，使线缆安装方便，减少与车壳的摩擦。第一接地端子和第二接地端子同时与同一个电连接装置电连接，这样一根电连接装置同时为两个充电内核的接地端子进行接地，减少了零件，简化了工序。
在一些实施例中，电连接装置3至少部分伸出充电接口本体1外部，并通过接地装置3与车辆接地端电连接。从而能够在与车辆接地端的连接中实现对充电接口的接地。接地装置4一般设置在固定架12的附近，可以使用较短的电连接装置3就能实现与车辆接地端的电连接，节省电连接装置3的使用量，降低充电接口接地结构的成本。电连接装置3至少部分伸出充电接口本体1外部，可以方便的对接地端的连接状态进行检查。另外，电连接装置3伸出充电接口本体1外部可以设置为柔性材质，可以吸收车辆接地端振动对电连接装置3的影响，避免由于车辆的振动，导致充电接口本体1的损坏，延长充电接口本体1的使用寿命。
虽然已经通过例子对本申请的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本申请的范围。本领域的技术人员应该理解，可在不脱离本申请的范围和精神的情况下，对以上实施例进行修改。本申请的范围由所附权利要求来限定。
Claims (31)
- 一种充电接口接地结构，其特征在于，包括：充电接口本体，电连接装置和接地装置，所述充电接口本体包括交流充电内核和直流充电内核，所述交流充电内核内设置第一接地端子，所述直流充电内核内设置第二接地端子；所述接地装置与充电系统或车辆系统的接地端电连接；所述电连接装置包括第一端、第二端和第三端，所述第一端与所述第一接地端子电连接，所述第二端与所述第二接地端子电连接，所述第三端与所述接地装置电连接。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一端和/或所述第二端与所述第三端连接。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置至少部分设置在所述充电接口本体中。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一端与所述第一接地端子通过压接或焊接或铆接或螺接或插接的方式连接，所述第二端与所述第二接地端子通过压接或焊接或铆接或螺接或插接的方式连接。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一端与所述第一接地端子通过螺纹结构可拆卸连接，和/或，所述第二端与所述第二接地端子通过螺纹结构可拆卸连接。
- 根据权利要求5所述的一种充电接口接地结构，其特征在于，所述可拆卸连接包括螺栓，所述第一端和/或所述第二端上设置通孔，所述第一接地端子和/或所述第二接地端子的端面上分别设置第一螺纹孔，所述螺栓穿过所述通孔并与所述第一螺纹孔螺纹连接。
- 根据权利要求5所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子的一端设置螺柱，所述第一端和/或所述第二端分别设置第二螺纹孔，所述螺柱与所述第二螺纹孔螺纹连接。
- 根据权利要求5所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子的一端设置螺柱，所述第一端和/或所述第二端上分别设置嵌件，所述嵌件内设置第三螺纹孔，所述螺柱与所述第三螺纹孔螺纹连接。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第三端和所述接地装置为一体结构，所述接地装置上设置接地通孔或接地点。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第三端和 所述接地装置压接或焊接或铆接或螺接或插接连接，所述接地装置为螺柱结构或螺母结构。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述充电接口本体上设置安装槽，所述安装槽上设置至少一个卡接爪，至少部分所述电连接装置被所述卡接爪卡接在所述安装槽内。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述充电接口本体上设置安装槽，所述安装槽上设置至少一个卡接爪，至少部分所述电连接装置和至少部分所述接地装置被所述卡接爪卡接在所述安装槽内。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，至少部分所述电连接装置被一体注塑在所述充电接口本体内。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，至少部分所述电连接装置和至少部分所述接地装置被一体注塑在所述充电接口本体内。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置材质为刚性材料，所述电连接装置材质中含有铜或铝。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置材质为导电塑性材料，通过挤出或注塑或浸塑或吹塑或发泡或3D打印的方法设置在所述充电接口本体上。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，至少部分所述电连接装置为柔性材质。
- 根据权利要求17所述的一种充电接口接地结构，其特征在于，所述柔性材质为多芯线缆或编织线缆或多层薄板叠加的软排。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置具有至少一个弯折部。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子与所述电连接装置的横截面积不同。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子与所述电连接装置的横截面形状不同。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子与所述电连接装置的材质不同。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述第一接地端子和/或所述第二接地端子与所述电连接装置具有的金属晶体结构不同。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置包括至少两个形状不同的横截面。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置外设有绝缘层。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述交流充电内核和/或所述直流充电内核的侧壁设置安装孔，所述第一端和/或第二端穿过所述安装孔与所述第一接地端子和/或所述第二接地端子电连接。
- 根据权利要求1所述的一种充电接口接地结构，其特征在于，所述电连接装置还包括过渡连接件，所述过渡连接件一端与所述电连接装置连接，另一端穿过安装孔与所述第一接地端子和/或所述第二接地端子电连接。
- 根据权利要求27所述的一种充电接口接地结构，其特征在于，所述第一端和/或第二端和/或所述过渡连接件上套设密封件，所述密封件与所述安装孔过盈配合连接。
- 一种车辆，包括车辆接地端和如权利要求1-28任一项所述的一种充电接口接地结构，其特征在于，所述充电接口本体通过固定架固定在所述车辆上，所述接地装置与所述车辆接地端电连接。
- 根据权利要求29所述的一种车辆，其特征在于，所述固定架上设置多个固定孔，所述固定孔通过螺栓结构与所述车辆可拆卸连接，所述接地装置设置在其中一个所述固定孔内。
- 根据权利要求30所述的一种车辆，其特征在于，所述电连接装置至少部分伸出所述充电接口本体外部，并通过所述接地装置与所述车辆接地端电连接。
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| CN215221187U (zh) * | 2021-04-20 | 2021-12-17 | 泰科电子（苏州）有限公司 | 一种用于电动汽车的充电插座 |
| CN114937902A (zh) * | 2022-05-03 | 2022-08-23 | 长春捷翼汽车零部件有限公司 | 一种充电接口接地结构及一种车辆 |
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| JP2013149514A (ja) * | 2012-01-20 | 2013-08-01 | Yazaki Corp | アース接続構造 |
| CN215221187U (zh) * | 2021-04-20 | 2021-12-17 | 泰科电子（苏州）有限公司 | 一种用于电动汽车的充电插座 |
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