CN112838401B - Charging terminal assembly - Google Patents
Charging terminal assembly Download PDFInfo
- Publication number
- CN112838401B CN112838401B CN202110002652.9A CN202110002652A CN112838401B CN 112838401 B CN112838401 B CN 112838401B CN 202110002652 A CN202110002652 A CN 202110002652A CN 112838401 B CN112838401 B CN 112838401B
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- contact piece
- conductive contact
- main body
- terminal main
- terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Electric Propulsion And Braking For Vehicles (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a charging terminal assembly, which comprises a terminal main body and a conductive contact piece, wherein one end of the terminal main body can be connected with a conductive cable, the other end of the terminal main body is connected with the conductive contact piece, the terminal main body and the conductive contact piece are both conductors, and the terminal main body is detachably connected with the conductive contact piece; the terminal main body is of a hollow structure and is provided with a cooling cavity, and the cooling cavity can be communicated with an external cooling liquid. In the charging terminal component, the terminal main body is detachably connected with the conductive contact piece, and when the conductive contact piece fails, the whole charging terminal component does not need to be replaced, and only the conductive contact piece needs to be replaced, so that the use cost of the charging terminal component is reduced; meanwhile, the cooling cavity is arranged in the terminal main body, the charging terminal assembly is cooled by leading in cooling liquid, the heat dissipation performance of the charging terminal assembly is enhanced, and the service life of the charging terminal assembly is prolonged.
Description
Technical Field
The invention relates to the technical field of electric automobiles and supporting facilities thereof, in particular to a charging terminal assembly.
Background
Electric vehicles are widely used, such as electric buses, taxis, private cars and the like, and when the electric vehicles are used, the electric vehicles are subjected to charging and discharging for many times, and a charging terminal for charging the electric vehicles fails after being used for many times due to friction, dust, oxidation, temperature rise and the like in the using process. In addition, the ordinary charging terminal is naturally cooled, and the current-carrying capacity cannot break through the upper limit of 250A due to the limitation of physical size.
Therefore, how to change the current situation that the charging terminal needs to be entirely replaced after failure, which results in high use cost and poor terminal heat dissipation performance in the prior art, becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The present invention provides a charging terminal assembly to solve the above problems in the prior art, reduce the cost of the charging terminal, and enhance the heat dissipation performance of the terminal.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a charging terminal assembly, which comprises a terminal main body and a conductive contact piece, wherein one end of the terminal main body can be connected with a conductive cable, the other end of the terminal main body is connected with the conductive contact piece, the terminal main body and the conductive contact piece are both conductors, and the terminal main body is detachably connected with the conductive contact piece; the terminal main body is of a hollow structure and is provided with a cooling cavity which can be communicated with an external cooling liquid.
Preferably, the conductive contact piece is sleeved outside the terminal main body, and the conductive contact piece is in interference fit with the terminal main body.
Preferably, the outer wall of the terminal main body or the inner wall of the conductive contact piece is provided with a groove, the groove is parallel to the axis of the terminal main body or the conductive contact piece, the number of the grooves is multiple, and the grooves are uniformly distributed around the circumference of the axis of the terminal main body or the conductive contact piece.
Preferably, the charging terminal assembly further comprises an insulation cap, the insulation cap is located at one end of the conductive contact piece far away from the terminal main body, the insulation cap penetrates through the conductive contact piece to be detachably connected with the terminal main body, and the insulation cap is made of an insulation material.
Preferably, an outer diameter of the insulating cap is identical to an outer diameter of the conductive contact piece, and the insulating cap is screwed with the terminal main body; the end, far away from the conductive contact piece, of the insulating cap is conical, the insulating cap is provided with an installation groove, and a sealing element is arranged between the insulating cap and the conductive contact piece.
Preferably, the charging terminal assembly further comprises a sleeve, the sleeve is connected with the terminal main body, an inner cavity of the sleeve is communicated with the cooling cavity, the inner cavity of the sleeve can be communicated with external cooling liquid, and the sleeve is made of an insulating material.
Preferably, the sleeve comprises a first conduit, one end of the first conduit extends into the cooling cavity, and the other end of the first conduit is connected with a cooling liquid pipe.
Preferably, the sleeve further comprises a second conduit, the second conduit is communicated with the inner cavity of the sleeve, the conductive cable comprises a conductive part and an outer shell part, the outer shell part is sleeved outside the conductive part, the conductive part penetrates through the second conduit to be connected with the terminal main body, the outer shell part is connected with the second conduit, and gaps are formed between the inner wall of the second conduit and the outer wall of the conductive part and between the outer wall of the conductive part and the inner wall of the outer shell part.
Preferably, the terminal body has a connecting portion, the conductive portion is riveted to the connecting portion, and the connecting portion is located in the cavity of the case.
Preferably, the first conduit and the second conduit are both provided with anti-drop joints, and a sealing ring is arranged between the sleeve and the terminal main body.
Compared with the prior art, the invention has the following technical effects: the charging terminal assembly comprises a terminal main body and a conductive contact piece, wherein one end of the terminal main body can be connected with a conductive cable, the other end of the terminal main body is connected with the conductive contact piece, the terminal main body and the conductive contact piece are both conductors, and the terminal main body is detachably connected with the conductive contact piece; the terminal main body is of a hollow structure and is provided with a cooling cavity, and the cooling cavity can be communicated with an external cooling liquid. In the charging terminal component, the terminal main body is detachably connected with the conductive contact piece, and when the conductive contact piece fails, the whole charging terminal component does not need to be replaced, and only the conductive contact piece needs to be replaced, so that the use cost of the charging terminal component is reduced; meanwhile, the cooling cavity is arranged in the terminal main body, the cooling liquid is led in to cool the charging terminal assembly, the heat dissipation performance of the charging terminal assembly is enhanced, and the service life of the charging terminal assembly is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a charging terminal assembly according to the present invention;
fig. 2 is a sectional structure view of a charging terminal assembly of the present invention;
fig. 3 is a sectional structure view of a terminal body of the charging terminal assembly of the present invention;
fig. 4 is a schematic structural view of a terminal body of a charging terminal assembly according to another embodiment of the present invention;
fig. 5 is a sectional view showing the conductive contact piece of the charging terminal assembly according to the present invention;
fig. 6 is a schematic structural view of an insulation cap of the charging terminal assembly of the present invention;
FIG. 7 is a schematic view of the structure of the case of the charging terminal assembly of the present invention;
fig. 8 is a sectional view showing a structure of a sleeve of the charging terminal assembly according to the present invention;
wherein 100 is a charging terminal assembly, 1 is a terminal main body, 2 is a conductive contact piece, 3 is a conductive cable, 4 is a cooling cavity, 5 is a groove, 6 is an insulating cap, 7 is a mounting groove, 8 is a sealing element, 9 is a sleeve, 10 is a first conduit, 11 is a cooling liquid pipe, 12 is a second conduit, 13 is a conductive portion, 14 is a shell portion, 15 is a connecting portion, and 16 is a sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The present invention provides a charging terminal assembly to solve the above problems in the prior art, reduce the cost of the charging terminal, and enhance the heat dissipation performance of the terminal.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 8, fig. 1 is a schematic structural diagram of a charging terminal assembly of the present invention, fig. 2 is a schematic structural diagram of a cut-away of the charging terminal assembly of the present invention, fig. 3 is a schematic structural diagram of a cut-away of a terminal body of the charging terminal assembly of the present invention, fig. 4 is a schematic structural diagram of a terminal body of the charging terminal assembly of the present invention in another embodiment, fig. 5 is a schematic structural diagram of a cut-away of a conductive contact piece of the charging terminal assembly of the present invention, fig. 6 is a schematic structural diagram of an insulating cap of the charging terminal assembly of the present invention, fig. 7 is a schematic structural diagram of a sleeve of the charging terminal assembly of the present invention, and fig. 8 is a schematic structural diagram of a cut-away of a sleeve of the charging terminal assembly of the present invention.
The invention provides a charging terminal assembly 100, which comprises a terminal main body 1 and a conductive contact piece 2, wherein one end of the terminal main body 1 can be connected with a conductive cable 3, the other end of the terminal main body 1 is connected with the conductive contact piece 2, both the terminal main body 1 and the conductive contact piece 2 are conductors, and the terminal main body 1 and the conductive contact piece 2 are detachably connected; the terminal body 1 is a hollow structure, the terminal body 1 is provided with a cooling cavity 4, and the cooling cavity 4 can be communicated with an external cooling liquid.
In the charging terminal assembly 100, the terminal main body 1 and the conductive contact piece 2 are detachably connected, and when the conductive contact piece 2 fails, the whole charging terminal assembly 100 does not need to be replaced, and only the conductive contact piece 2 needs to be replaced, so that the use cost of the charging terminal assembly 100 is reduced; meanwhile, the cooling cavity 4 is provided in the terminal body 1, and the cooling liquid is introduced to cool the charging terminal assembly 100, thereby enhancing the heat dissipation performance of the charging terminal assembly 100 and prolonging the service life of the charging terminal assembly 100.
The conductive contact piece 2 is sleeved outside the terminal main body 1, and the conductive contact piece 2 is in interference fit with the terminal main body 1. When the charging terminal assembly 100 is used, the plugging action is needed, and the temperature rises during charging, the conductive contact piece 2 can generate damages such as friction, oxidation and the like, so that the conductive contact piece 2 fails, the conductive contact piece 2 is connected with the terminal main body 1 in an inserting mode, the replacement is convenient after the conductive contact piece 2 fails, the use cost of the charging terminal assembly 100 is reduced, meanwhile, the conductive contact piece 2 is in interference fit with the terminal main body 1, so that the conductive contact piece 2 is tightly connected with the terminal main body 1, and the charging terminal assembly 100 can work smoothly.
In order to prevent the conductive contact piece 2 or the terminal body 1 from deforming or breaking due to the interference fit between the conductive contact piece 2 and the terminal body 1, the contact area between the conductive contact piece 2 and the terminal body 1 is affected, grooves 5 are formed in the outer wall of the terminal body 1 or the inner wall of the conductive contact piece 2, the grooves 5 are parallel to the axis of the terminal body 1 or the conductive contact piece 2, the number of the grooves 5 is multiple, the multiple grooves 5 are circumferentially and uniformly distributed around the axis of the terminal body 1 or the conductive contact piece 2, the part in contact with the grooves 5 can deform and be embedded into the grooves 5, the grooves 5 can prevent damages such as breakage caused by the extrusion of the interference fit, meanwhile, the connection firmness between the conductive contact piece 2 and the terminal body 1 is enhanced, the transmission of current is guaranteed, and high-power charging can be realized. In other embodiments of the present invention, the grooves 5 may be formed on both the outer wall of the terminal body 1 and the inner wall of the conductive contact piece 2, and the grooves 5 may be replaced by knurling. It should be further noted that the terminal body 1 is stepped, which facilitates the connection and positioning of the conductive contact piece 2, limits the limit position of the conductive contact piece 2, improves the convenience of the dismounting and replacing of the conductive contact piece 2, and reduces the labor intensity of the operation.
In addition, in order to remove an arc generated when the charging terminal assembly 100 is charged, the charging terminal assembly 100 is further provided with an insulating cap 6, the insulating cap 6 is located at an end of the conductive contact piece 2 away from the terminal main body 1, the insulating cap 6 is detachably connected to the terminal main body 1 through the conductive contact piece 2, the insulating cap 6 is conveniently detachable when the conductive contact piece 2 is replaced, and the insulating cap 6 is made of an insulating material.
Specifically, the outer diameter of the insulating cap 6 is consistent with that of the conductive contact piece 2, so that the plugging and the unplugging are convenient, the deposition of dust and other impurities is avoided, the insulating cap 6 is in threaded connection with the terminal main body 1, the connection is firm, and the disassembly and the assembly are rapid and convenient; the one end that the insulating cap 6 kept away from electrically conductive contact piece 2 is coniform, further makes things convenient for the action of charging terminal subassembly 100 plug, and insulating cap 6 has mounting groove 7, makes things convenient for the instrument operation, sets up sealing element 8 between insulating cap 6 and the electrically conductive contact piece 2, guarantees insulating cap 6 and electrically conductive contact piece 2's connection leakproofness, further prevents moisture in the air, dust etc. and gets into the inner wall of charging terminal subassembly 100, guarantees the inside electric conductivity of charging terminal subassembly 100. When the sealing element 8 is arranged, a sealing groove can be arranged on the conductive contact piece 2 or the insulating cap 6, and when the sealing groove is arranged on the conductive contact piece 2, the sealing groove can also be used as a force application point for detaching the conductive contact piece 2, so that the operation is convenient; similarly, when the seal ring 16 is provided, a seal groove may be provided on the outer wall of the terminal body 1 or the inner wall of the sleeve 9, and the seal ring 16 may be an O-ring, which is inexpensive and easy to replace.
More specifically, the charging terminal assembly 100 further includes a sleeve 9, the sleeve 9 is connected to the terminal body 1, an inner cavity of the sleeve 9 is communicated with the cooling cavity 4, the inner cavity of the sleeve 9 can be communicated with an external cooling liquid, the sleeve 9 is made of an insulating material, and the sleeve 9 is arranged to facilitate guiding the cooling liquid into the cooling cavity 4, so that the charging terminal assembly 100 can better dissipate heat.
In this embodiment, the sleeve 9 includes a first conduit 10, one end of the first conduit 10 extends into the cooling cavity 4, the other end of the first conduit 10 is connected with a cooling liquid pipe 11, the cooling liquid enters the first conduit 10 from the cooling liquid pipe 11, then enters the cooling cavity 4 from the first conduit 10, and generates turbulence at the bottom of the cooling cavity 4 and flows along a gap between the first conduit 10 and the cooling cavity 4, during this process, the cooling liquid and the inner wall of the terminal body 1 generate sufficient heat exchange, thereby ensuring timely cooling of the charging terminal assembly 100 and prolonging the service life of the charging terminal assembly 100.
In another embodiment of the present invention, the sheath 9 further includes a second conduit 12, the second conduit 12 is communicated with the inner cavity of the sheath 9, the conductive cable 3 includes a conductive portion 13 and a casing portion 14, the casing portion 14 is sleeved outside the conductive portion 13, the conductive portion 13 passes through the second conduit 12 and is connected with the terminal main body 1, the casing portion 14 is connected with the second conduit 12, and gaps are provided between the inner wall of the second conduit 12 and the outer wall of the conductive portion 13, and between the outer wall of the conductive portion 13 and the inner wall of the casing portion 14. The cooling liquid enters the cooling cavity 4 from the first conduit 10, enters between the second conduit 12 and the conductive part 13 along the inner cavities of the cooling cavity 4 and the sleeve 9, and then enters between the outer shell part 14 and the conductive part 13, so that the conductive cable 3 is cooled. In addition, the cooling liquid can also enter the inner cavity of the sleeve 9 through the second conduit 12, then enter the cooling cavity 4, and finally be led out through the first conduit 10, and the actual working condition can be determined in the practical application.
Further, the terminal body 1 is provided with a connecting portion 15, the conductive portion 13 is riveted with the connecting portion 15, the connecting portion 15 is located in the cavity of the sleeve 9, the terminal body 1 is an integrated conductor, the cooling liquid flows in the terminal body 1 and the sleeve 9, the terminal body 1 and the sleeve 9 do not transmit current, the conductor contacted by the cooling liquid is integrated, the connecting surface between the conductor and the conductor does not exist, in this way, the connecting surface between the conductor and the conductor is not penetrated by the cooling liquid, poor contact between the conductors is caused, the problem of influence on charging efficiency is solved, and high-power charging can be ensured.
In addition, first pipe 10 and second pipe 12 all set up the anticreep and connect, guarantee sleeve 9 and coolant pipe 11, the firm in connection degree of electrically conductive cable 3, set up sealing washer 16 between sleeve 9 and the terminal main part 1, can play dampproofing dirt-proof effect.
In the charging terminal assembly 100, the terminal main body 1 and the conductive contact piece 2 are detachably connected, and when the conductive contact piece 2 fails, the whole charging terminal assembly 100 does not need to be replaced, and only the conductive contact piece 2 needs to be replaced, so that the use cost of the charging terminal assembly 100 is reduced; meanwhile, the cooling cavity 4 is provided in the terminal body 1, and the cooling liquid is introduced to cool the charging terminal assembly 100, thereby enhancing the heat dissipation performance of the charging terminal assembly 100 and prolonging the service life of the charging terminal assembly 100.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A charging terminal assembly, comprising: the terminal comprises a terminal main body, a conductive contact piece and an insulating cap, wherein one end of the terminal main body can be connected with a conductive cable, the other end of the terminal main body is connected with the conductive contact piece, the terminal main body and the conductive contact piece are both conductors, and the terminal main body is detachably connected with the conductive contact piece; the terminal main body is of a hollow structure and is provided with a cooling cavity which can be communicated with an external cooling liquid; the terminal main body is connected with the conductive contact piece in an inserted manner, the conductive contact piece is sleeved outside the terminal main body, and the conductive contact piece is in interference fit with the terminal main body; the outer wall of terminal main part or the slot has on the inner wall of electrically conductive contact piece, the slot with terminal main part or the axis of electrically conductive contact piece parallels, the quantity of slot is the multichannel, the multichannel the slot winds terminal main part or the axis week form equipartition of electrically conductive contact piece, the insulating cap is located electrically conductive contact piece is kept away from terminal main part's one end, the insulating cap passes electrically conductive contact piece with terminal main part can dismantle the connection, the insulating cap is made by insulating material.
2. The charging terminal assembly of claim 1, wherein: the outer diameter of the insulating cap is consistent with that of the conductive contact piece, and the insulating cap is in threaded connection with the terminal main body; the end, far away from the conductive contact piece, of the insulating cap is conical, the insulating cap is provided with an installation groove, and a sealing element is arranged between the insulating cap and the conductive contact piece.
3. The charging terminal assembly of claim 1, wherein: the terminal comprises a terminal main body, and is characterized by further comprising a sleeve, wherein the sleeve is connected with the terminal main body, an inner cavity of the sleeve is communicated with the cooling cavity, the inner cavity of the sleeve can be communicated with an external cooling liquid, and the sleeve is made of an insulating material.
4. The charging terminal assembly of claim 3, wherein: the sleeve comprises a first guide pipe, one end of the first guide pipe extends into the cooling cavity, and the other end of the first guide pipe is connected with a cooling liquid pipe.
5. The charging terminal assembly of claim 4, wherein: the sleeve further comprises a second conduit, the second conduit is communicated with the inner cavity of the sleeve, the conductive cable comprises a conductive part and an outer shell part, the outer shell part is sleeved outside the conductive part, the conductive part penetrates through the second conduit to be connected with the terminal main body, the outer shell part is connected with the second conduit, and gaps are formed between the inner wall of the second conduit and the outer wall of the conductive part and between the outer wall of the conductive part and the inner wall of the outer shell part.
6. The charging terminal assembly of claim 5, wherein: the terminal main body is provided with a connecting part, the conductive part is riveted with the connecting part, and the connecting part is positioned in the cavity of the sleeve.
7. The charging terminal assembly of claim 6, wherein: the first guide pipe with the second guide pipe all sets up the anticreep and connects, the cover with set up the sealing washer between the terminal main part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002652.9A CN112838401B (en) | 2021-01-04 | 2021-01-04 | Charging terminal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002652.9A CN112838401B (en) | 2021-01-04 | 2021-01-04 | Charging terminal assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112838401A CN112838401A (en) | 2021-05-25 |
| CN112838401B true CN112838401B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110002652.9A Active CN112838401B (en) | 2021-01-04 | 2021-01-04 | Charging terminal assembly |
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| CN (1) | CN112838401B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023100466A1 (en) * | 2021-11-30 | 2023-06-08 | 住友電気工業株式会社 | Connector with electric wire |
| CN114537181A (en) * | 2022-03-09 | 2022-05-27 | 四川永贵科技有限公司 | Oil cooling structure of large-current terminal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025644B (en) * | 2016-08-03 | 2018-06-15 | 四川瑞可达连接系统有限公司 | The replaceable contact pin component of direct-current charging interface |
| CN207572574U (en) * | 2017-11-10 | 2018-07-03 | 深圳市沃尔新能源电气科技股份有限公司 | Electric connector contact pin |
| CN211126154U (en) * | 2019-12-05 | 2020-07-28 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Liquid cooling terminal assembly for high-power charging |
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