WO2023231460A1 - 充电端子及充电座 - Google Patents

充电端子及充电座 Download PDF

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Publication number
WO2023231460A1
WO2023231460A1 PCT/CN2023/077358 CN2023077358W WO2023231460A1 WO 2023231460 A1 WO2023231460 A1 WO 2023231460A1 CN 2023077358 W CN2023077358 W CN 2023077358W WO 2023231460 A1 WO2023231460 A1 WO 2023231460A1
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WO
WIPO (PCT)
Prior art keywords
elastic piece
charging
charging terminal
transition
connection
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Application number
PCT/CN2023/077358
Other languages
English (en)
French (fr)
Inventor
杨成
张陆峰
刘志刚
Original Assignee
比亚迪股份有限公司
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Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2023231460A1 publication Critical patent/WO2023231460A1/zh

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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
    • H01R13/02—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
    • 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
    • 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
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present application belongs to the technical field of charging stands, and in particular relates to a charging terminal and a charging stand.
  • New energy vehicles are equipped with a charging stand.
  • the charging head of the power supply end needs to be plugged into the charging interface of the charging stand of the new energy vehicle.
  • a charging terminal which includes a connection base and a plug-in part.
  • the charging terminal is arranged inside the charging base.
  • the connection base is used to connect a cable of the charging base.
  • the plug-in part includes A plurality of elastic pieces arranged at intervals along the circumferential direction of the charging terminal, the inner sides of the plurality of elastic pieces forming insertion holes for insertion of pin terminals of the charging gun;
  • the elastic piece includes a main elastic piece and a transition elastic piece.
  • the transition elastic piece is connected between the main elastic piece and the connecting seat.
  • the outer peripheral surface of the transition elastic piece is provided with a concave surface that is concave toward the axis of the insertion hole;
  • the plurality of elastic pieces When the pin terminal of the charging gun is inserted into the plug hole, the plurality of elastic pieces expand outward, and the transition elastic piece can pull the main elastic piece, so that the plurality of main elastic pieces have a direction to the desired direction.
  • the central axes of the plug holes tend to converge, thereby causing the plurality of main elastic pieces to closely adhere to the outer peripheral surface of the pin terminal of the charging gun.
  • the concave surface extends along the circumferential direction of the charging terminal, the concave surfaces of the plurality of transition elastic pieces are on the same circumference, and the concave surfaces of the plurality of transition elastic pieces form an annular structure.
  • the plurality of elastic pieces are arranged at intervals, and a gap is formed between two adjacent elastic pieces.
  • the cross-sectional size of the connecting base is larger than the cross-sectional size of the main elastic piece, the first end of the transition elastic piece is connected to the connecting base, and the second end of the transition elastic piece is connected to the main elastic piece.
  • the cross-sectional size of the first end of the transition elastic piece is larger than the cross-sectional size of the second end of the transition elastic piece.
  • the main elastic piece includes a first connecting section, a second connecting section and a third connecting section, one end of the first connecting section is connected to the transition elastic piece, and the second connecting section is connected to the third connecting section.
  • the thickness of the second connecting section is smaller than the thickness of the first connecting section and the third connecting section. The thickness of the connecting section.
  • the length of the first connecting section is greater than the length of the second connecting section, and the length of the second connecting section is greater than the length of the third connecting section.
  • the third connecting section is provided with a guide slope, and the guide slope is inclined from the inner side of the third connecting section toward the outer side.
  • connection base includes a connection base body and a connection hole provided inside the connection base body, and the connection base The socket is used to connect the cable of the charging stand.
  • a conductive layer is provided on the inner wall of the connection hole.
  • the conductive layer is a tin layer.
  • connection base further includes an annular groove provided on the main body of the connection base, and the annular groove is used to be clamped in the charging base.
  • one end of the plug hole is open and the other end is closed.
  • the open end of the plug hole is used for inserting pin terminals, and the closed end of the plug hole extends to the main body of the connection socket. .
  • the charging terminal includes a connection base and a plug-in part.
  • the plug-in part includes a plurality of elastic pieces arranged at intervals along the circumference of the charging terminal. A plug-in hole is formed on the inner side of each of the elastic pieces;
  • the elastic piece includes a main elastic piece and a transition elastic piece.
  • the transition elastic piece is connected between the main elastic piece and the connecting seat.
  • the outer peripheral surface of the transition elastic piece is provided with a concave surface that is concave toward the axis of the insertion hole.
  • the concave surface extends along the circumferential direction of the charging terminal, the concave surfaces of the plurality of transition elastic pieces are on the same circumference, and the concave surfaces of the plurality of transition elastic pieces form an annular structure.
  • the cross-sectional size of the connecting base is larger than the cross-sectional size of the main elastic piece, the first end of the transition elastic piece is connected to the connecting base, and the second end of the transition elastic piece is connected to the main elastic piece.
  • the cross-sectional size of the first end of the transition elastic piece is larger than the cross-sectional size of the second end of the transition elastic piece.
  • the main elastic piece includes a first connecting section, a second connecting section and a third connecting section, one end of the first connecting section is connected to the transition elastic piece, and the second connecting section is connected to the third connecting section.
  • the thickness of the second connecting section is smaller than the thickness of the first connecting section and the third connecting section. The thickness of the connecting section.
  • the third connecting section is provided with a guide slope, and the guide slope is inclined from the inner side of the third connecting section toward the outer side.
  • connection base includes a connection base body and a connection hole provided inside the connection base body.
  • embodiments of the present application provide a charging stand, including a charging stand shell and a charging terminal as described above.
  • a cavity for accommodating the charging terminal is provided in the housing of the charging stand, and there is a gap between the inner wall of the cavity and the charging terminal.
  • FIG. 1 is a schematic diagram of a charging terminal provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the cooperation between the charging stand and the charging gun provided by an embodiment of the present application.
  • the technical problem to be solved by this application is: to solve the problem that when the existing charging gun is plugged into the charging stand, it is impossible to confirm whether the charging gun is in place, and a charging terminal and a charging stand are provided.
  • a transition elastic piece is provided at one end of the elastic piece.
  • the transition elastic piece has a concave shape.
  • the main elastic piece has a traction effect, causing multiple elastic pieces to gather toward the central axis of the plug hole, which can enhance the elasticity and resilience of the elastic piece, so that the multiple elastic pieces can clamp the pin terminal, forming a clamp-type structure to ensure charging The gun is in place to avoid local heating caused by insufficient contact.
  • an embodiment of the present application provides a charging terminal, which includes a connection base 1 and a plug portion 2.
  • the charging terminal is arranged inside the charging base, and the connection base 1 is used to connect to the charging base.
  • the connecting base 1 and the cable are connected inside the charging base.
  • the plug-in part 2 includes a plurality of elastic pieces 22 arranged at intervals along the circumferential direction of the charging terminal. The inner sides of the plurality of elastic pieces 22 are formed for charging.
  • the pin terminal 3 of the gun is inserted into the plug hole 21. When the charging gun is plugged into the charging base, the pin terminal 3 is inserted into the plug hole 21 to realize charging of the new energy vehicle.
  • the elastic piece 22 includes a main elastic piece and a transition elastic piece 221.
  • the transition elastic piece 221 is connected between the main elastic piece and the connecting base 1.
  • the transition elastic piece 221 The right end of the connecting seat 1 is connected to the left end of the connecting seat 1.
  • the left and right are distinguished according to the left and right directions in Figure 1.
  • the outer peripheral surface of the transition elastic piece 221 is provided with a concave surface 225 that is recessed toward the axis of the insertion hole 21.
  • the concave surface 225 is connected
  • a transitional connection between the main elastic piece and the connecting base 1 is formed between the outer peripheral surface of the main elastic piece and the outer peripheral surface of the connecting base 1.
  • the transition elastic piece 221 When the pin terminal 3 of the charging gun is inserted into the insertion hole 21, a plurality of elastic pieces 22 expands outward, and the multiple elastic pieces 22 around the insertion hole 21 will be stretched due to the insertion of the pin terminal 3, and the elastic pieces 22 will deform.
  • the outer peripheral surface of the transition elastic piece 221 is designed to have a concave shape, and the transition elastic piece 221 can The main elastic pieces are pulled so that the plurality of main elastic pieces tend to converge toward the central axis of the insertion hole 21 , thereby causing the plurality of main elastic pieces to closely adhere to the outer peripheral surface of the pin terminal 3 of the charging gun.
  • a transition elastic piece 221 is provided at one end of the elastic piece 22.
  • the transition elastic piece 221 has a concave shape.
  • the elastic piece 22 is squeezed open to cause a slight During deformation, the transition elastic piece 221 has a traction effect on the main elastic piece, causing the plurality of elastic pieces 22 to gather toward the central axis, which can enhance the elasticity and resilience of the elastic piece 22, so that the multiple elastic pieces 22 can clamp the pin terminal 3, forming
  • the clamp-type structure ensures that the charging gun is in place and avoids local heating caused by insufficient contact.
  • the elastic piece 22 can clamp the pin terminal 3, during the insertion process of the pin terminal 3, the charging terminal can scrape off the oxide layer and foreign matter on the surface of the pin terminal 3, so that the pin terminal of the charging gun can 3 becomes smoother with more use, which solves the problem that the pin terminal 3 of the charging gun heats up due to the increase in resistance after oxidation.
  • a plurality of elastic pieces 22 are arranged at intervals, and a gap 23 is formed between two adjacent elastic pieces 22, so that the plug-in part 2 can hold the pin terminal 3 tightly.
  • the plug-in part 2 can hold the pin terminal 3 tightly.
  • 2 to 8 elastic pieces 22 are provided.
  • 6 elastic pieces 22 are provided.
  • the concave surface 225 extends along the circumferential direction of the charging terminal, the concave surfaces 225 of the multiple transition elastic pieces 221 are on the same circumference, and the multiple concave surfaces 225 form an annular structure.
  • the cross-sectional shape of the concave surface can be, but is not limited to, V-shaped, U-shaped and arc-shaped.
  • the concave surface 225 is a concave curved surface.
  • the cross-sectional size of the connecting base 1 is larger than the cross-sectional size of the main elastic piece
  • the first end of the transition elastic piece 221 is connected to the connecting base 1
  • the second end of the transition elastic piece 221 is connected to the connecting base 1.
  • the cross-sectional size of the first end of the transition spring piece 221 is larger than the cross-sectional size of the second end of the transition spring piece 221
  • the middle part of the transition spring piece 221 is recessed toward the central axis of the insertion hole 21 , so that the entire transition spring piece 221
  • the shape of the concave curved surface makes the elastic sheet When 22 is stretched outward and deformed, it has good resilience. After the pin terminal 3 is pulled out, the elastic piece 22 can also return to its position well, and will not affect the pin after the pin terminal 3 is inserted next time. Full contact between terminal 3 and charging terminal.
  • one end of the plug hole 21 is open and the other end is closed.
  • the open end of the plug hole 21 is used for inserting the pin terminal 3 , and the closed end of the plug hole 21 extends to the connecting base body 11.
  • the main elastic piece includes a first connecting section 222, a second connecting section 223 and a third connecting section 224.
  • One end of the first connecting section 222 is connected to the transition elastic piece 221.
  • the concave surface 225 is connected to the outer surface of the first connecting section 222, and the second connecting section 223 is connected between the other end of the first connecting section 222 and the third connecting section 224.
  • the second connecting section 223 is connected to the outer surface of the first connecting section 222.
  • the thickness of the section 223 is smaller than the thickness of the first connecting section 222 and the thickness of the third connecting section 224 , the length of the first connecting section 222 is greater than the length of the second connecting section 223 , and the length of the second connecting section 223 is greater than the third connecting section 224
  • the length, the length and thickness of the first connecting section 222 are slightly larger, which can ensure the rigidity of the elastic piece 22 and prevent the elastic piece 22 from being insufficiently rigid and difficult to recover after the elastic piece 22 is deformed.
  • the length and thickness of the second connecting section 223 It is slightly smaller and is provided at one end close to the opening of the plug hole 21 , which can ensure the elasticity of the elastic piece 22 , have a certain deformation, and can tightly hold the pin terminal 3 . By rationally distributing the rigidity and elasticity of the elastic piece 22, the elastic piece 22 can hold the pin terminal 3 tightly, resist deformation and recover from deformation, without affecting the subsequent insertion of the pin terminal 3, and improve the service life.
  • the third connection section 224 has a guide slope 2241 .
  • the guide slope 2241 extends from the inner surface of the third connection section 224 toward the outer surface. The direction of the incline is tilted, so that one end of the opening of the plug hole 21 is trumpet-shaped in the direction away from the plug hole 21, which facilitates the insertion of the pin terminal 3.
  • the guide slope 2241 has a guiding role when inserting the pin terminal 3, guiding the pin. Insertion direction of terminal 3.
  • connection base 1 includes a connection base body 11 and a connection hole 12 provided inside the connection base body 11.
  • the connection hole 12 is used to connect the cable of the charging base.
  • the shape and size of the hole 12 can be determined according to the actual situation, and the size of the connecting hole 12 can have a certain impact on the current carrying capacity of the charging terminal.
  • a conductive layer 14 is provided on the inner wall of the connection hole 12.
  • the current carrying capacity of the charging terminal can be enhanced, and the current carrying capacity can be increased to 320A.
  • the temperature change curve of the charging gun during charging has been optimized to prevent high temperatures from adversely affecting the charging gun tip.
  • the conductive layer 14 is a tin layer.
  • connection base 1 also includes an annular groove 13 provided on the connection base body 11.
  • the annular groove 13 is clamped in the charging base and can prevent the charging terminal from moving in the axial direction. move.
  • an embodiment of the present application provides a charging stand, which includes a charging stand shell 4 and a charging terminal as described above.
  • the charging terminal is arranged in the charging stand shell 4.
  • Multiple types of terminals are provided on the charging stand, and each terminal is The same structure as the charging terminal can be used.
  • the charging base shell 4 is provided with a cavity 41 for accommodating charging terminals. There is a gap 15 between the inner wall of the cavity 41 and the charging terminal, so that the charging terminal will not be stuck in the cavity.
  • the charging terminal In the body 41, when the insertion position of the pin terminal 3 is not on the center line of the cavity 41, the charging terminal will move slightly to follow the position of the pin terminal 3, thereby reducing damage to the charging terminal.

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  • Connector Housings Or Holding Contact Members (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种充电端子及充电座，充电端子包括连接座和插接部，充电端子设置在充电座内部，连接座用于连接充电座的线缆，插接部包括插接孔和沿周向间隔设置的多个弹性片，多个弹性片围合形成插接孔，插接孔用于连接充电枪的插针端子；弹性片包括主弹片和设置在主弹片的端部的过渡弹片，过渡弹片连接在主弹片和连接座之间，过渡弹片的外周面为凹面，充电枪的插针端子插入插接孔中时，过渡弹片用于牵引主弹片向着插接孔的中心轴移动。

Description

充电端子及充电座
本申请要求于2022年05月31日提交中国专利局、申请号为202221338538.X、申请名称为“充电端子及充电座”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于充电座技术领域，特别是涉及一种充电端子及充电座。
背景技术
新能源汽车上安装有充电座，现有的充电座与供电端连接充电时，需将供电端的充电枪头插接于新能源汽车的充电座的充电接口内。
但是，现有的充电枪插接在充电座上时，无法确认充电枪是否接触到位，接触不充分会导致导体接触面积小引起导体局部发热量激增，在充电状态时，充电枪可带电热插拔，影响使用安全性。
发明内容
一方面，本申请实施例提供一种充电端子，包括连接座和插接部，所述充电端子设置在充电座内部，所述连接座用于连接充电座的线缆，所述插接部包括沿所述充电端子的周向间隔排布的多个弹性片，多个所述弹性片的内侧形成用于供充电枪的插针端子插入的插接孔；
所述弹性片包括主弹片和过渡弹片，所述过渡弹片连接在所述主弹片和所述连接座之间，所述过渡弹片的外周面设置有向所述插接孔的轴线凹陷的凹面；
在所述插接孔中插接有充电枪的插针端子时，多个所述弹性片向外扩张，所述过渡弹片能够牵引所述主弹片，以使得多个所述主弹片具有向所述插接孔的中心轴聚拢的趋势，进而使得多个所述主弹片紧密贴附在充电枪的插针端子的外周面上。
可选地，所述凹面沿所述充电端子的周向延伸，多个所述过渡弹片的凹面在同一圆周上，多个所述过渡弹片的凹面组成环形结构。
可选地，所述多个弹性片间隔设置，相邻两个弹性片之间形成隔缝。
可选地，所述连接座的截面尺寸大于所述主弹片的截面尺寸，所述过渡弹片的第一端连接在所述连接座上，所述过渡弹片的第二端连接在所述主弹片上，所述过渡弹片的第一端的截面尺寸大于所述过渡弹片的第二端的截面尺寸。
可选地，所述主弹片包括第一连接段、第二连接段和第三连接段，所述第一连接段的一端连接在所述过渡弹片上，所述第二连接段连接所述第一连接段的另一端和所述第三连接段之间，沿着所述插接孔的径向方向，所述第二连接段的厚度小于所述第一连接段的厚度和所述第三连接段的厚度。
可选地，所述第一连接段的长度大于第二连接段的长度，所述第二连接段的长度大于所述第三连接段的长度。
可选地，所述第三连接段上具有导向斜面，所述导向斜面自所述第三连接段的内侧面向着外侧面的方向倾斜。
可选地，所述连接座包括连接座主体和设置在所述连接座主体的内部的连接孔，所述连 接孔用于连接充电座的线缆。
可选地，所述连接孔的内壁上设置有导电层。
可选地，所述导电层为锡层。
可选地，所述连接座还包括设置在所述连接座主体上的环形凹槽，所述环形凹槽用于卡接在充电座内。
可选地，所述插接孔的一端开口，另一端封闭，所述插接孔的开口的一端用于插针端子的插入，所述插接孔的封闭的一端延伸至所述连接座主体。
另一方面，本申请实施例提供一种充电端子，所述充电端子包括连接座和插接部，所述插接部包括沿所述充电端子的周向间隔排布的多个弹性片，多个所述弹性片的内侧形成插接孔；
所述弹性片包括主弹片和过渡弹片，所述过渡弹片连接在所述主弹片和所述连接座之间，所述过渡弹片的外周面设置有向所述插接孔的轴线凹陷的凹面。
可选地，所述凹面沿所述充电端子的周向延伸，多个所述过渡弹片的凹面在同一圆周上，多个所述过渡弹片的凹面组成环形结构。
可选地，所述连接座的截面尺寸大于所述主弹片的截面尺寸，所述过渡弹片的第一端连接在所述连接座上，所述过渡弹片的第二端连接在所述主弹片上，所述过渡弹片的第一端的截面尺寸大于所述过渡弹片的第二端的截面尺寸。
可选地，所述主弹片包括第一连接段、第二连接段和第三连接段，所述第一连接段的一端连接在所述过渡弹片上，所述第二连接段连接所述第一连接段的另一端和所述第三连接段之间，沿着所述插接孔的径向方向，所述第二连接段的厚度小于所述第一连接段的厚度和所述第三连接段的厚度。
可选地，所述第三连接段上具有导向斜面，所述导向斜面自所述第三连接段的内侧面向着外侧面的方向倾斜。
可选地，所述连接座包括连接座主体和设置在所述连接座主体的内部的连接孔。
另一方面，本申请实施例提供一种充电座，包括充电座外壳和如前所述的充电端子。
可选地，所述充电座外壳内设置有容纳所述充电端子的腔体，所述腔体的内壁和所述充电端子之间具有间隙。
附图说明
图1是本申请一实施例提供的充电端子的示意图；
图2是本申请一实施例提供的充电座和充电枪的配合示意图。
说明书中的附图标记如下：
1、连接座；11、连接座主体；12、连接孔；13、环形凹槽；14、导电层；15、间隙
2、插接部；21、插接孔；22、弹性片；221、过渡弹片；222、第一连接段；223、第二
连接段；224、第三连接段；2241、导向斜面；23、隔缝；225、凹面；
3、插针端子；
4、充电座外壳；41、腔体。
具体实施方式
为了使本申请所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步的详细说明。应当理解，此处所描述的具体实施例仅仅用以解 释本申请，并不用于限定本申请。
本申请所要解决的技术问题是：针对现有的充电枪插接在充电座上时，无法确认充电枪是否接触到位的问题，提供一种充电端子及充电座。
本申请实施例提供的充电端子中，在弹性片的一端设置过渡弹片，过渡弹片为凹面形状，在插针端子插入插接孔中，使得弹性片被挤开而发生轻微形变时，过渡弹片对主弹片具有牵引作用，使得多个弹性片向着插接孔的中心轴聚拢，能够增强弹性片的弹性和回弹力，使得多个弹性片能够夹紧插针端子，形成抱夹式结构，保证充电枪接触到位，避免了接触不充分导致的局部发热。
如图1至图2所示，一方面，本申请一实施例提供的一种充电端子，包括连接座1和插接部2，充电端子设置在充电座内部，连接座1用于连接充电座的线缆，连接座1和线缆在充电座的内部连接，插接部2包括沿充电端子的周向间隔排布的多个弹性片22，多个弹性片22的内侧形成用于供充电枪的插针端子3插入的插接孔21，充电枪与充电座插接配合时，插针端子3插入插接孔21，实现新能源汽车的充电。
弹性片22包括主弹片和过渡弹片221，过渡弹片221连接在主弹片和连接座1之间，沿着充电端子的轴向方向，主弹片的右端部连接过渡弹片221的左端部，过渡弹片221的右端部连接在连接座1的左端部上，左和右为按照图1中的左右方向进行区分，过渡弹片221的外周面设置有向插接孔21的轴线凹陷的凹面225，凹面225连接在主弹片的外周面和连接座1的外周面之间，形成主弹片和连接座1之间的过渡连接，插接孔21中插接有充电枪的插针端子3时，多个弹性片22向外扩张，插接孔21周围的多个弹性片22会由于插针端子3的插入而被撑开，弹性片22发生形变，过渡弹片221的外周面设计成凹面形状，过渡弹片221能够牵引主弹片，以使得多个主弹片具有向插接孔21的中心轴聚拢的趋势，进而使得多个主弹片紧密贴附在充电枪的插针端子3的外周面上。
本申请实施例提供的充电端子中，在弹性片22的一端设置过渡弹片221，过渡弹片221具有凹面形状，在插针端子3插入插接孔21中，使得弹性片22被挤开而发生轻微形变时，过渡弹片221对主弹片具有牵引作用，使得多个弹性片22向着中心轴聚拢，能够增强弹性片22的弹性和回弹力，使得多个弹性片22能够夹紧插针端子3，形成抱夹式结构，保证充电枪接触到位，避免了接触不充分导致的局部发热。
再者，由于弹性片22能够夹紧插针端子3，在插针端子3插入的过程中，充电端子能够将插针端子3表层的氧化层和异物刮擦干净，使得充电枪的插针端子3越用越光滑，解决了充电枪的插针端子3由于氧化后电阻变大引起升温的问题。
在一实施例中，如图1所示，多个弹性片22间隔设置，相邻两个弹性片22之间形成隔缝23，这样使得插接部2能够抱紧插针端子3，另一方面，也能够提到适配性，在插针端子3尺寸误差偏大时，也能够实现充电座和充电枪的插接配合。
在一实施例中，弹性片22设置有2～8个，优选地，本实施例中，弹性片22设置有6个。
在一实施例中，凹面225沿充电端子的周向延伸，多个过渡弹片221的凹面225在同一圆周上，多个凹面225组成环形结构。凹面的截面形状可以但不限于V型、U型和弧形。优选地，凹面225为凹型曲面。
在一实施例中，如图1、图2所示，连接座1的截面尺寸大于主弹片的截面尺寸，过渡弹片221的第一端连接在连接座1上，过渡弹片221的第二端连接在主弹片上，过渡弹片221的第一端的截面尺寸大于过渡弹片221的第二端的截面尺寸，过渡弹片221的中间部分向着插接孔21的中心轴的方向凹陷，使得过渡弹片221的整体呈凹型曲面的形状，使得在弹性片 22向着外侧撑开而发生形变时，具有较好的回弹力，在插针端子3拔出后，弹性片22也能够很好的回位，不会在下一次插针端子3插入后影响插针端子3和充电端子的充分接触。
在一实施例中，如图2所示，插接孔21的一端开口，另一端封闭，插接孔21的开口的一端用于插针端子3的插入，插接孔21的封闭的一端延伸至连接座主体11。
在一实施例中，如图1、图2所示，主弹片包括第一连接段222、第二连接段223和第三连接段224，第一连接段222的一端连接在过渡弹片221上，凹面225与第一连接段222的外表面连接，第二连接段223连接第一连接段222的另一端和第三连接段224之间，沿着插接孔21的径向方向，第二连接段223的厚度小于第一连接段222的厚度和第三连接段224的厚度，第一连接段222的长度大于第二连接段223的长度，第二连接段223的长度大于第三连接段224的长度，第一连接段222的长度和厚度稍大，能够保证弹性片22的刚性，避免弹性片22刚性不够而在弹性片22发生形变后，不易恢复，第二连接段223的长度和厚度稍小，且靠近插接孔21的开口的一端设置，能够保证弹性片22的弹性，具有一定的形变，能够抱紧插针端子3。通过对弹性片22的刚性和弹性的合理分布，使得弹性片22能够抱紧插针端子3的同时，能够抵抗变形，恢复形变，不影响后续插针端子3的插入，提高使用寿命。
在一实施例中，如图1、图2所示，第三连接段224上具有导向斜面2241，沿着充电端子的径向方向，导向斜面2241自第三连接段224的内表面向着外表面的方向倾斜，使得插接孔21的开口的一端向着远离插接孔21的方向呈喇叭状，便于插针端子3的插入，导向斜面2241在插针端子3时具有导向作用，导正插针端子3的插入方向。
在一实施例中，如图1、图2所示，连接座1包括连接座主体11和设置在连接座主体11的内部的连接孔12，连接孔12用于连接充电座的线缆，连接孔12的形状和尺寸可根据实际情况进行确定，连接孔12的尺寸能够对充电端子的载流能力产生一定的影响。
在一实施例中，连接孔12的内壁上设置有导电层14，通过设置导电层14，能够增强充电端子的载流能力，载流能力能够提高到320A，通过提高充电端子的载流能力，充电枪充电时的温度变化曲线得到了优化，防止高温对充电枪枪头产生不良影响。优选地，导电层14为锡层。
在一实施例中，如图1所示，连接座1还包括设置在连接座主体11上的环形凹槽13，环形凹槽13卡接在充电座内，能够防止充电端子在轴向方向上移动。
一方面，本申请一实施例提供一种充电座，包括充电座外壳4和如前的充电端子，充电端子设置在充电座外壳4中，充电座上设置有多种类型端子，每个端子均可采用充电端子相同的结构。
在一实施例中，如图2所示，充电座外壳4内设置有容纳充电端子的腔体41，腔体41的内壁和充电端子之间具有间隙15，使得充电端子不会卡紧在腔体41中，在插针端子3的插入位置不在腔体41的中心线上时，充电端子会有轻微的移动，跟随插针端子3的位置移动，减少充电端子的损坏。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种充电端子，其特征在于，包括连接座(1)和插接部(2)，所述充电端子设置在充电座内部，所述连接座(1)用于连接充电座的线缆，所述插接部(2)包括沿所述充电端子的周向间隔排布的多个弹性片(22)，多个所述弹性片(22)的内侧形成用于供充电枪的插针端子(3)插入的插接孔(21)；
    所述弹性片(22)包括主弹片和过渡弹片(221)，所述过渡弹片(221)连接在所述主弹片和所述连接座(1)之间，所述过渡弹片(221)的外周面设置有向所述插接孔(21)的轴线凹陷的凹面(225)；
    在所述插接孔(21)中插接有充电枪的插针端子(3)时，多个所述弹性片(22)向外扩张，所述过渡弹片(221)能够牵引所述主弹片，以使得多个所述主弹片具有向所述插接孔(21)的中心轴聚拢的趋势，进而使得多个所述主弹片紧密贴附在充电枪的插针端子(3)的外周面上。
  2. 如权利要求1所述的充电端子，其特征在于，所述凹面(225)沿所述充电端子的周向延伸，多个所述过渡弹片(221)的凹面(225)在同一圆周上，多个所述过渡弹片(221)的凹面(225)组成环形结构。
  3. 如权利要求1或2所述的充电端子，其特征在于，所述多个弹性片间隔设置，相邻两个弹性片之间形成隔缝(23)。
  4. 如权利要求1至3任一项所述的充电端子，其特征在于，所述连接座(1)的截面尺寸大于所述主弹片的截面尺寸，所述过渡弹片(221)的第一端连接在所述连接座(1)上，所述过渡弹片(221)的第二端连接在所述主弹片上，所述过渡弹片(221)的第一端的截面尺寸大于所述过渡弹片(221)的第二端的截面尺寸。
  5. 如权利要求1至4任一项所述的充电端子，其特征在于，所述主弹片包括第一连接段(222)、第二连接段(223)和第三连接段(224)，所述第一连接段(222)的一端连接在所述过渡弹片(221)上，所述第二连接段(223)连接所述第一连接段(222)的另一端和所述第三连接段(224)之间，沿着所述插接孔(21)的径向方向，所述第二连接段(223)的厚度小于所述第一连接段(222)的厚度和所述第三连接段(224)的厚度。
  6. 如权利要求5所述的充电端子，其特征在于，所述第一连接段(222)的长度大于第二连接段(223)的长度，所述第二连接段(223)的长度大于所述第三连接段(224)的长度。
  7. 如权利要求5或6所述的充电端子，其特征在于，所述第三连接段(224)上具有导向斜面(2241)，所述导向斜面(2241)自所述第三连接段(224)的内侧面向着外侧面的方向倾斜。
  8. 如权利要求1至7任一项所述的充电端子，其特征在于，所述连接座(1)包括连接座主体(11)和设置在所述连接座主体的内部的连接孔(12)，所述连接孔(12)用于连接充电座的线缆。
  9. 如权利要求8所述的充电端子，其特征在于，所述连接孔(12)的内壁上设置有导电层(14)。
  10. 如权利要求9所述的充电端子，其特征在于，所述导电层(14)为锡层。
  11. 如权利要求8至10任一项所述的充电端子，其特征在于，所述连接座(1)还包括设置在所述连接座主体(11)上的环形凹槽(13)，所述环形凹槽(13)用于卡接在充电座内。
  12. 如权利要求1至11任一项所述的充电端子，其特征在于，所述插接孔(21)的一端开口，另一端封闭，所述插接孔(21)的开口的一端用于插针端子(3)的插入，所述插接孔(21)的封闭的一端延伸至所述连接座主体(11)。
  13. 一种充电端子，其特征在于，包括连接座(1)和插接部(2)，所述插接部(2)包括沿所述充电端子的周向间隔排布的多个弹性片(22)，多个所述弹性片(22)的内侧形成插接孔(21)；
    所述弹性片(22)包括主弹片和过渡弹片(221)，所述过渡弹片(221)连接在所述主弹片和所述连接座(1)之间，所述过渡弹片(221)的外周面设置有向所述插接孔(21)的轴线凹陷的凹面(225)。
  14. 如权利要求13所述的充电端子，其特征在于，所述凹面(225)沿所述充电端子的周向延伸，多个所述过渡弹片(221)的凹面(225)在同一圆周上，多个所述过渡弹片(221)的凹面(225)组成环形结构。
  15. 如权利要求13或14项所述的充电端子，其特征在于，所述连接座(1)的截面尺寸大于所述主弹片的截面尺寸，所述过渡弹片(221)的第一端连接在所述连接座(1)上，所述过渡弹片(221)的第二端连接在所述主弹片上，所述过渡弹片(221)的第一端的截面尺寸大于所述过渡弹片(221)的第二端的截面尺寸。
  16. 如权利要求13至15任一项所述的充电端子，其特征在于，所述主弹片包括第一连接段(222)、第二连接段(223)和第三连接段(224)，所述第一连接段(222)的一端连接在所述过渡弹片(221)上，所述第二连接段(223)连接所述第一连接段(222)的另一端和所述第三连接段(224)之间，沿着所述插接孔(21)的径向方向，所述第二连接段(223)的厚度小于所述第一连接段(222)的厚度和所述第三连接段(224)的厚度。
  17. 如权利要求16所述的充电端子，其特征在于，所述第三连接段(224)上具有导向斜面(2241)，所述导向斜面(2241)自所述第三连接段(224)的内侧面向着外侧面的方向倾斜。
  18. 如权利要求13至17任一项所述的充电端子，其特征在于，所述连接座(1)包括连接座主体(11)和设置在所述连接座主体的内部的连接孔(12)。
  19. 一种充电座，其特征在于，包括充电座外壳(4)和权利要求1-12任一项所述的充电端子或13至18任一项所述的充电端子。
  20. 如权利要求19所述的充电座，其特征在于，所述充电座外壳内设置有容纳所述充电端子的腔体(41)，所述腔体的内壁和所述充电端子之间具有间隙(15)。
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CN208797260U (zh) * 2018-09-25 2019-04-26 深圳乔合里科技股份有限公司 可拆卸充电座
CN214898976U (zh) * 2021-03-31 2021-11-26 柏绍文 实用型电性连接头及电性连接机构
CN215184555U (zh) * 2021-05-31 2021-12-14 深圳市沃尔新能源电气科技股份有限公司 连接端子、充电座及电动汽车
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CN215896789U (zh) * 2021-09-15 2022-02-22 长春捷翼汽车零部件有限公司 一种端子高精度对中的充电座及一种机动车辆
CN217788913U (zh) * 2022-05-31 2022-11-11 比亚迪股份有限公司 充电端子及充电座

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