CN107681314B - Liquid-cooled cable plug-in structure and charging connector - Google Patents
Liquid-cooled cable plug-in structure and charging connector Download PDFInfo
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- CN107681314B CN107681314B CN201710915855.0A CN201710915855A CN107681314B CN 107681314 B CN107681314 B CN 107681314B CN 201710915855 A CN201710915855 A CN 201710915855A CN 107681314 B CN107681314 B CN 107681314B
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- charging terminal
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- 239000007788 liquid Substances 0.000 claims abstract description 191
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 58
- 239000004020 conductor Substances 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 description 21
- 238000003466 welding Methods 0.000 description 4
- 229920002457 flexible plastic Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a liquid-cooled cable plug-in structure and a charging connector, wherein the liquid-cooled cable plug-in structure comprises at least two contact assemblies and a connecting assembly, wherein any contact assembly comprises a charging terminal and a liquid-cooled cable, a first liquid flow channel is formed in the charging terminal, a first liquid through hole and a second liquid through hole which are communicated with the first liquid flow channel are formed in the charging terminal, a second liquid flow channel is formed in the liquid-cooled cable, and the second liquid flow channel is communicated with the first liquid flow channel through the second liquid through hole; the connecting assembly is internally provided with a third liquid flow channel, and is provided with a liquid inlet and a plurality of liquid outlets which are communicated with the third liquid flow channel, and the liquid outlets are in one-to-one correspondence and are communicated with the first liquid passing holes. The liquid-cooled cable splicing structure controls the temperature rise of the terminal at the heat source, and meanwhile, the temperature difference between the liquid-cooled cables can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a liquid-cooled cable plugging structure and a charging connector.
Background
The connector is widely applied to various fields, and particularly in the new energy automobile industry, the connector is an extremely important component. In the application of new energy automobiles, the charging terminals and the cable conductors are contacts with higher heating temperature in the charging connector of the electric automobile, and the contacts often have serious heating due to long-term working in the environment of high current and high voltage. Particularly, when the contact is conducted with current, the contact generates larger heat due to self impedance, so that the current carrying capacity is reduced, and the charging power is limited; and the too high temperature can bring potential safety hazard, cause personnel to burn and scald. The existing liquid cooling cable generally adopts a structure that two charging main lines enter and exit one, and because the flow of cooling liquid is longer, the temperature difference between the liquid inlet and the liquid outlet is very large during charging and heat dissipation, the temperature difference between cable conductors near the liquid inlet and the liquid outlet of the cable is large, and the cooling effect is not ideal.
Disclosure of Invention
The invention mainly aims to provide a liquid-cooled cable plug-in assembly, which aims to control the temperature rise of a terminal from a heat source and can effectively reduce the temperature difference between charging main cables.
In order to achieve the above object, the present invention provides a liquid-cooled cable plugging structure for a connector, the liquid-cooled cable plugging structure comprises at least two contact assemblies and a connecting assembly, wherein,
any contact assembly comprises a charging terminal and a liquid cooling cable, wherein a first liquid flow channel is formed in the charging terminal, a first liquid passing hole and a second liquid passing hole which are communicated with the first liquid flow channel are formed in the charging terminal, a second liquid flow channel is formed in the liquid cooling cable, and the second liquid flow channel is communicated with the first liquid flow channel through the second liquid passing hole;
the connecting assembly is internally provided with a third liquid flow channel, and is provided with a liquid inlet and a plurality of liquid outlets which are communicated with the third liquid flow channel, and the liquid outlets are in one-to-one correspondence and are communicated with the first liquid passing holes.
Preferably, the charging terminal is in a long shaft shape, the first liquid flow channel comprises an annular cavity and a central cavity, the annular cavity is located at the periphery of the central cavity, in the length direction of the charging terminal, the first liquid passing hole is communicated with one end, close to the liquid cooling cable, of the annular cavity, and the second liquid flow channel is communicated with the central cavity through the second liquid passing hole.
Preferably, the charging terminal comprises a contact pin shell and a contact pin inner core, wherein the contact pin shell is provided with a first containing cavity with one end being open and a first liquid passing hole communicated with the first containing cavity;
the contact pin inner core is provided with a second containing cavity with an open end and a second liquid passing hole communicated with the second containing cavity, a limit flange is convexly arranged on the peripheral wall of the contact pin inner core, the open end of the contact pin inner core is inserted into the first containing cavity, the limit flange is fixedly connected with the inner wall surface of the contact pin shell, and the second containing cavity is communicated with the first containing cavity to form the first liquid flow channel.
Preferably, the liquid cooling cable comprises a conductor and a liquid cooling pipe surrounding the periphery of the conductor, the conductor is fixedly connected with one end, close to the opening of the first accommodating cavity, of the pin inner core, and a second liquid flow channel is formed between the liquid cooling pipe and the conductor.
Preferably, the contact assembly further comprises a first fastener, the liquid-cooled tube being sleeved on the open end of the pin housing; the first fastener is sleeved on the periphery of the liquid cooling pipe so as to lock and fix the contact pin shell and the liquid cooling pipe.
Preferably, the plurality of contact assemblies are arranged in parallel, the first liquid through hole is formed on one surface of any two adjacent contact assemblies, which are opposite, and the connecting assembly is positioned between any two adjacent contact assemblies; the connecting assembly comprises a pipe joint, the pipe joint comprises a pipe body, one end of the pipe body is arranged in an open mode, and the liquid outlet is formed in the peripheral wall of the other end of the pipe body.
Preferably, the pipe connector further comprises a locking part surrounding the periphery of the charging terminal, the locking part comprises a first half ring and a second half ring, the first half ring extends from two sides of the liquid outlet along the peripheral wall of the charging terminal to form, and the second half ring is in butt joint with the first half ring and is detachably connected with the first half ring.
Preferably, the connecting assembly further comprises a connecting pipe, one end of the connecting pipe is connected with the open end of the pipe body, and the liquid inlet is formed at the other end of the connecting pipe.
Preferably, the connecting assembly further comprises a second fastening piece, and the second fastening piece is sleeved on the periphery of the pipe body and the connecting pipe so as to lock and fix the pipe body and the connecting pipe.
The invention also provides a charging connector, which comprises a liquid-cooled cable plugging structure, wherein the liquid-cooled cable plugging structure comprises at least two contact assemblies and a connecting assembly,
any contact assembly comprises a charging terminal and a liquid cooling cable, wherein a first liquid flow channel is formed in the charging terminal, a first liquid passing hole and a second liquid passing hole which are communicated with the first liquid flow channel are formed in the charging terminal, a second liquid flow channel is formed in the liquid cooling cable, and the second liquid flow channel is communicated with the first liquid flow channel through the second liquid passing hole;
the connecting assembly is internally provided with a third liquid flow channel, and is provided with a liquid inlet and a plurality of liquid outlets which are communicated with the third liquid flow channel, and the liquid outlets are in one-to-one correspondence and are communicated with the first liquid passing holes.
The liquid-cooled cable splicing structure adopts the connecting component to connect the plurality of contact components into a whole, and a third liquid flow channel in the connecting component, a first liquid flow channel in the charging terminal and a second liquid flow channel in the liquid-cooled cable are sequentially communicated. Therefore, the cooling liquid flows into the first liquid flow channel through the third liquid flow channel, so that the charging terminal is cooled, the temperature of the charging terminal can be effectively reduced, and the service life of the charging terminal is prolonged; then, the cooling liquid flows through the second liquid flow channel, so that the liquid cooling cables can be cooled down, the current carrying capacity of the liquid cooling cables is not affected due to serious heating when the large current is conducted, and the cooling liquid almost reaches the liquid cooling cable parts of all the contact assemblies at the same time, so that the cooling degree of all the liquid cooling cables tends to be consistent, and the temperature difference between all the liquid cooling cables can be effectively reduced. According to the liquid-cooled cable splicing structure, the liquid flow channel through which cooling liquid can circulate is arranged in the contact assembly, so that the cooling liquid can timely take away heat generated by the charging terminal and the liquid-cooled cables, the temperature rise of the terminal is controlled at the heat source, and meanwhile, the temperature difference between the liquid-cooled cables can be effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a liquid-cooled cable plug structure according to an embodiment of the present invention;
FIG. 2 is an exploded view of the liquid-cooled cable plugging structure of FIG. 1;
FIG. 3 is a cross-sectional view of the inner structure of the liquid-cooled cable plugging structure in FIG. 1;
fig. 4 is a cross-sectional view of an internal structure of the charging terminal of fig. 3;
fig. 5 is an exploded view of the connection assembly of fig. 1.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Contact assembly | 120 | Liquid cooling cable | 241 | Pipe body |
| 110 | Charging terminal | 121 | Second flow channel | 242 | Locking part |
| 111 | First liquid flow channel | 122 | Conductor | 242a | First half ring |
| 11a | Annular cavity | 123 | Liquid cooling pipe | 242b | Second semi-ring |
| 11b | Center cavity | 130 | First fastener | 243 | Locking bolt |
| 112 | First liquid through hole | 200 | Connection assembly | 244 | Connecting pipe |
| 113 | Pin shell | 210 | Third flow channel | 245 | Second fastener |
| 114 | Pin inner core | 220 | Liquid inlet | 245a | Connecting nut |
| 1141 | Limiting flange | 230 | Liquid outlet | 245b | Lock nut |
| 1142 | Second liquid through hole | 240 | Pipe joint |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a liquid-cooled cable splicing structure.
In an embodiment of the present invention, as shown in fig. 1 to 4, the liquid-cooled cable plugging structure is used for a connector, and the liquid-cooled cable plugging structure includes at least two contact assemblies 100 and a connection assembly 200. The contact assembly 100 includes a charging terminal 110 and a liquid cooling cable 120, a first liquid flow channel 111 is formed in the charging terminal 110, a first liquid passing hole 112 and a second liquid passing hole 1142 which are communicated with the first liquid flow channel 111 are formed in the charging terminal 110, a second liquid flow channel 121 is formed in the liquid cooling cable 120, and the second liquid flow channel 121 is communicated with the first liquid flow channel 111 through the second liquid passing hole 1142. A third flow channel 210 is formed in the connection assembly 200, and the connection assembly 200 is provided with a liquid inlet 220 and a plurality of liquid outlets 230, which are communicated with the third flow channel 210, and the liquid outlets 230 are in one-to-one correspondence and are communicated with the first liquid through holes 112.
In the present embodiment, the charging terminal 110 is made of a metal conductive material, for example, copper alloy or pure copper may be used, and it is generally required to perform surface treatment such as nickel plating, silver plating, etc. to increase the conductivity thereof. The charging terminal 110 is configured to be plugged into a charging socket, and the liquid cooling cable 120 is fixedly connected to the charging terminal 110 to conduct a circuit. The liquid cooling cable 120 generally includes a liquid cooling tube 123 and a conductor 122, wherein the conductor 122 is made of a conductive material for fixedly and electrically connecting with the charging terminal 110; the liquid cooling pipe 123 is preferably made of flexible plastic or rubber, and the cooling liquid can flow through the liquid cooling pipe 123. The second flow channel 121 inside the liquid-cooled cable 120 may be formed in various manners, for example, a liquid-cooled tube 123 may be disposed around the periphery of the conductor 122, and the second flow channel 121 may be formed between the liquid-cooled tube 123 and the conductor 122; the plurality of conductors 122 may be disposed around the outer periphery of the liquid-cooled tube 123, and the second flow path 121 may be formed inside the liquid-cooled tube 123. The connection assembly 200 is used for fixing connection between the contact assemblies 100, and the liquid outlet 230 of the connection assembly 200 communicates with the first liquid through hole 112 of the charging terminal 110 to realize communication between the third liquid flow channel 210 and the first liquid flow channel 111. The number of the liquid outlets 230 corresponds to the number of the first liquid through holes 112 one by one, in general, two contact assemblies 100 are provided, and one first liquid through hole 112 is disposed on any one contact assembly 100, at this time, the number of the liquid outlets 230 of the connection assembly 200 is also correspondingly set to two, and each liquid outlet 230 is communicated with the corresponding first liquid through hole 112. Of course, the number of the contact assemblies 100 and the first vias 112 may be set according to actual requirements, or may be three or more.
The liquid-cooled cable plugging structure of the invention adopts the connecting assembly 200 to connect the plurality of contact assemblies 100 together, and the third liquid flow channel 210 in the connecting assembly 200, the first liquid flow channel 111 in the charging terminal 110 and the second liquid flow channel 121 in the liquid-cooled cable 120 are communicated in sequence. In this way, the cooling liquid flows into the first flow channel 111 through the third flow channel 210, so that the charging terminal 110 is cooled, and the temperature of the charging terminal 110 can be effectively reduced, so as to prolong the service life of the charging terminal 110; then, the cooling liquid flows through the second liquid flow channel 121, so that the liquid cooling cable 120 can be cooled, the current carrying capacity of the liquid cooling cable 120 is not affected by serious heat generation when a large current is applied, and the cooling liquid almost reaches the liquid cooling cable 120 of each contact assembly 100 at the same time, so that the cooling degree of each liquid cooling cable 120 tends to be uniform, and the temperature difference between each liquid cooling cable 120 can be effectively reduced. The liquid-cooled cable plugging structure of the invention enables the cooling liquid to timely take away the heat generated by the charging terminal 110 and the liquid-cooled cable 120 by arranging the liquid flow channel for the cooling liquid to circulate inside the contact assembly 100, controls the temperature rise of the terminal at the heat source, and simultaneously can effectively reduce the temperature difference between the liquid-cooled cables 120.
Further, referring to fig. 4, the charging terminal 110 is in a long shaft shape, the first flow channel 111 includes an annular cavity 11a and a central cavity 11b, the annular cavity 11a is located at the periphery of the central cavity 11b, and in the length direction of the charging terminal 110, the first liquid passing hole 112 is communicated with one end of the annular cavity 11a, which is close to the liquid cooling cable 120, and the second flow channel 121 is communicated with the central cavity 11b through the second liquid passing hole 1142.
In this embodiment, the annular cavity 11a and the central cavity 11b are communicated to form the first flow channel 111, and the cooling liquid flows into the annular cavity 11a, then flows into the central cavity 11b, and finally flows into the second flow channel 121, so that both the charging terminal 110 and the liquid cooling cable 120 can be effectively cooled. The cooling liquid first flows through the inside of the charging terminal 110, and the cooling effect on the charging terminal 110 is good because the cooling liquid temperature is low at this time. And the first through-hole 112 is communicated with the annular cavity 11a and is arranged close to the liquid cooling cable 120, so that the cooling liquid flowing from the first through-hole 112 to the annular cavity 11a can be more fully contacted with the plugging part of the charging terminal 110, and the cooling of the charging terminal 110 is more fully and uniformly realized. However, the present design is not limited thereto, and various specific structures may be provided for the first flow channel 111, as long as the communication between the first flow channel 111 and the second flow channel 121 is ensured. In addition, the cooling liquid flowing out of the third flow channel 210 may first pass through the second flow channel 121 to cool the liquid cooling cable 120, and then flow into the first flow channel 111 to cool the charging terminal 110.
Further, referring to fig. 3 and 4, the charging terminal 110 includes a pin housing 113 and a pin core 114, and the pin housing 113 has a first cavity with an open end and the first through-liquid hole 112 is communicated with the first cavity. The pin inner core 114 has a second cavity with an open end, and the second liquid passing hole 1142 is communicated with the second cavity, a limit flange 1141 is disposed on an outer peripheral wall of the pin inner core 114, an open end of the pin inner core 114 is inserted into the first cavity, the limit flange 1141 is fixedly connected with an inner wall surface of the pin housing 113, and the second cavity is communicated with the first cavity to form the first liquid flow channel 111.
In this embodiment, the pin housing 113 and the pin core 114 are made of metal conductive materials, and the pin housing 113 and the pin core 114 cooperate to form the first fluid channel 111. Specifically, the open end of the pin core 114 is inserted into the first accommodating cavity, a step surface is formed at one end of the first accommodating cavity close to the opening, the limit flange 1141 of the pin core 114 abuts against the step surface, and the outer peripheral wall of the limit flange 1141 abuts against the inner wall surface of the pin housing 113. An annular cavity 11a is formed between the outer wall surface of the pin core 114 and the inner wall surface of the pin housing 113, and a second cavity of the pin core 114 constitutes a central cavity 11b.
By arranging the limiting flange 1141, on one hand, the pin inner core 114 can be limited, so that a gap is reserved between the pin inner core 114 and the cavity bottom of the first cavity, and the first cavity and the second cavity are communicated; on the other hand, the outer peripheral surface of the limit flange 1141 is fixedly connected with the inner wall surface of the pin housing 113, so that the pin inner core 114 can be stably mounted in the pin housing 113, so as to achieve better electrical contact. The outer peripheral surface of the limit flange 1141 and the inner wall surface of the pin housing 113 may be fixedly connected by welding, snap-fit connection, screw connection, interference fit, or the like.
Further, the liquid cooling cable 120 includes a conductor 122 and a liquid cooling pipe 123 surrounding the periphery of the conductor 122, the conductor 122 is fixedly connected with one end of the pin core 114 near the opening of the first cavity, and a second liquid flow channel 121 is formed between the liquid cooling pipe 123 and the conductor 122.
In this embodiment, the conductor 122 may be a single conductive wire or may be a plurality of conductive wires. Conductor 122 is fixedly connected to one end of pin core 114 for reliable electrical connection. The conductor 122 and the end face of the pin core 114 may be secured by welding, bonding, crimping, or the like. In practical applications, a wire hole is generally formed in an end face of the pin core 114, and the conductor 122 is fixed in the wire hole by crimping. The liquid-cooled tube 123 is preferably a flexible rubber tube or a flexible plastic tube with good insulation. One end of the liquid cooling tube 123 is sealingly connected to the open end of the pin housing 113 to ensure that the cooling liquid does not leak.
Further, the contact assembly 100 further includes a first fastener 130, and the liquid cooling tube 123 is sleeved on the open end of the pin housing 113; the first fastening member 130 is sleeved on the periphery of the liquid cooling pipe 123, so as to lock and fix the pin housing 113 and the liquid cooling pipe 123.
In this embodiment, a secure sealed connection of the pin housing 113 to the liquid cooling tube 123 is achieved by providing a first fastener 130. Specifically, a sleeve is formed at the open end of the pin housing 113, the liquid cooling pipe 123 is sleeved on the sleeve, the peripheral wall of the liquid cooling pipe 123 is substantially flush with the peripheral wall of the adjacent pin housing 113, and the first fastener 130 is sleeved on the periphery of the pin housing 113 and the periphery of the liquid cooling pipe 123 to fixedly connect the pin housing 113 and the liquid cooling pipe 123.
Preferably, the first fastening member 130 is a lock nut, one end of the inner wall of the lock nut is formed with an internal thread, the other end extends radially inwards to form a fastening ring, and the outer wall surface of the pin housing 113 is provided with an external thread adapted to the internal thread. In the installation process, the lock nut is in threaded connection with the external thread on the contact pin shell 113 through the internal thread, and in the pushing process of the lock nut through threaded connection, the inner peripheral wall of the fastening ring is abutted against the outer peripheral wall of the liquid cooling pipe 123, so that the stability and the tightness of connection between the liquid cooling pipe 123 and the contact pin shell 113 are enhanced. And the liquid cooling pipe 123 is detachably connected with the contact pin shell 113 through the lock nut, so that the structure is simple, the disassembly and the assembly are convenient, and the overhaul or the replacement of the parts are convenient.
Further, referring to fig. 1 and 5, a plurality of the contact assemblies 100 are arranged in parallel, the first liquid through hole 112 is formed on a surface of any two adjacent contact assemblies 100 opposite to each other, and the connection assembly 200 is located between any two adjacent contact assemblies 100; the connection assembly 200 comprises a pipe connector 240, the pipe connector 240 comprises a pipe body 241, one end of the pipe body 241 is arranged in an open mode, and the peripheral wall of the other end of the pipe body 241 is provided with the liquid outlet 230.
In the present embodiment, the connection assembly 200 is used to communicate with a plurality of contact assemblies 100, so that the cooling liquid can be delivered from the third flow channel 210 to the inside of each contact assembly 100 to cool down each contact assembly 100 at the same time. The connection assembly 200 and each contact assembly 100 may be fixed by welding, screwing, or the like. Specifically, the connection assembly 200 includes a pipe connector 240, where the pipe connector 240 is mainly composed of a pipe body 241, a channel through which cooling liquid can flow is formed inside the pipe body 241, and a liquid outlet 230 on the pipe body 241 is in butt joint with the first liquid through hole 112 of the contact assembly 100.
Further, in order to ensure connection stability of each contact assembly 100, the pipe connector 240 further includes a locking portion 242 surrounding the charging terminal 110, the locking portion 242 includes a first half ring 242a and a second half ring 242b, the first half ring 242a extends from two sides of the liquid outlet 230 along the peripheral wall of the charging terminal 110, and the second half ring 242b is abutted with the first half ring 242a and detachably connected with the first half ring 242 a.
In this embodiment, the first half ring 242a may be integrally formed with the pipe body 241 to ensure high strength. During assembly, the first liquid through hole 112 of the contact assembly 100 is aligned with the liquid outlet 230, at this time, the outer peripheral surface of the charging terminal 110 abuts against the annular inner wall surface of the first half ring 242a, and then the second half ring 242b abuts against and is fixed to the first half ring 242 a. Second half 242b and first half 242a may be fixed by welding, bonding, or the like, or may be fixed by a snap connection, a bolt connection, or the like. In practical applications, it is preferable to fix the components by means of bolts in order to achieve both ease of assembly and disassembly and reliability of connection. Specifically, the peripheral walls of the two free ends of the first half ring 242a are provided with first bosses, the first bosses are provided with first assembly holes, the peripheral walls of the two free ends of the second half ring 242b are provided with second bosses, the second bosses are provided with second assembly holes, and the first assembly holes are abutted with the second assembly holes and locked by locking bolts 243. The assembly structure is simple, the connection sealing reliability is high, and the stable operation of the system can be ensured.
Further, the connection assembly 200 further includes a connection pipe 244, one end of the connection pipe 244 is connected to the open end of the pipe body 241, and the other end is formed with the liquid inlet 220. Preferably, the connecting assembly 200 further includes a second fastening member 245, and the second fastening member 245 is sleeved on the outer periphery of the pipe body 241 and the connecting pipe 244, so as to lock and fix the pipe body 241 and the connecting pipe 244.
In the present embodiment, the connection pipe 244 is communicated with the pipe body 241 to form the third flow channel 210 for the cooling liquid to circulate. The connection pipe 244 is generally made of a flexible plastic pipe or rubber pipe with good insulation. In order to secure a reliable connection between the connection pipe 244 and the pipe body 241, a second fastening member 245 is used for locking fixation. The structure of the second fastening member 245 may be various, for example, the same structure as that of the first fastening member 130 may be adopted, or as shown in fig. 5, the second fastening member 245 includes a connection nut 245a and a locking nut 245b, wherein the connection nut 245a includes a connection portion and a sleeve portion, the connection portion is in threaded connection with the pipe body 241, the connection pipe 244 is sleeved on the peripheral wall of the sleeve portion, the locking nut 245b is sleeved on the connection nut 245a and the periphery of the connection pipe 244 so as to lock and seal the connection nut 245a and the connection pipe 244, and the specific structure of the locking nut 245b may refer to the structure of the first fastening member 130 in the above embodiment and will not be repeated herein.
The invention also provides a charging connector, which comprises a liquid-cooled cable plugging structure, and the specific structure of the liquid-cooled cable plugging structure refers to the above embodiment.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A liquid-cooled cable plugging structure is used for a connector and is characterized by comprising at least two contact assemblies and a connecting assembly, wherein,
any contact assembly comprises a charging terminal and a liquid cooling cable, wherein a first liquid flow channel is formed in the charging terminal, a first liquid passing hole and a second liquid passing hole which are communicated with the first liquid flow channel are formed in the charging terminal, a second liquid flow channel is formed in the liquid cooling cable, and the second liquid flow channel is communicated with the first liquid flow channel through the second liquid passing hole;
the connecting assembly is internally provided with a third liquid flow channel, and is provided with a liquid inlet and a plurality of liquid outlets which are communicated with the third liquid flow channel, and the liquid outlets are in one-to-one correspondence and are communicated with the first liquid passing holes.
2. The liquid-cooled cable plugging structure of claim 1, wherein the charging terminal is in a long shaft shape, the first liquid flow channel comprises an annular cavity and a central cavity, the annular cavity is located at the periphery of the central cavity, the first liquid through hole is communicated with one end, close to the liquid-cooled cable, of the annular cavity in the length direction of the charging terminal, and the second liquid flow channel is communicated with the central cavity through the second liquid through hole.
3. The liquid-cooled cable plugging structure of claim 2, wherein the charging terminal comprises a pin housing and a pin inner core, the pin housing having a first cavity with one end open and the first liquid-passing hole communicating with the first cavity;
the contact pin inner core is provided with a second containing cavity with an open end and a second liquid passing hole communicated with the second containing cavity, a limit flange is convexly arranged on the peripheral wall of the contact pin inner core, the open end of the contact pin inner core is inserted into the first containing cavity, the limit flange is fixedly connected with the inner wall surface of the contact pin shell, and the second containing cavity is communicated with the first containing cavity to form the first liquid flow channel.
4. The liquid-cooled cable plugging structure of claim 3, wherein the liquid-cooled cable comprises a conductor and a liquid-cooled tube surrounding the periphery of the conductor, the conductor is fixedly connected with one end of the pin inner core, which is close to the opening of the first containing cavity, and the liquid-cooled tube and the conductor form the second liquid flow channel therebetween.
5. The liquid cooled cable plugging structure of claim 4, wherein the contact assembly further comprises a first fastener, the liquid cooled tube being sleeved to the open end of the pin housing; the first fastener is sleeved on the periphery of the liquid cooling pipe so as to lock and fix the contact pin shell and the liquid cooling pipe.
6. The liquid-cooled cable plugging structure of claim 1, wherein a plurality of the contact assemblies are arranged in parallel, the first liquid through hole is formed on one surface of any two adjacent contact assemblies opposite to each other, and the connecting assembly is positioned between any two adjacent contact assemblies; the connecting assembly comprises a pipe joint, the pipe joint comprises a pipe body, one end of the pipe body is arranged in an open mode, and the liquid outlet is formed in the peripheral wall of the other end of the pipe body.
7. The liquid-cooled cable plugging structure of claim 6, wherein the pipe connector further comprises a locking part surrounding the periphery of the charging terminal, the locking part comprises a first half ring and a second half ring, the first half ring extends from two sides of the liquid outlet along the peripheral wall of the charging terminal, and the second half ring is in butt joint with the first half ring and is detachably connected with the first half ring.
8. The liquid-cooled cable plugging structure of claim 6, wherein the connection assembly further comprises a connection pipe, one end of the connection pipe is connected with the open end of the pipe body, and the other end of the connection pipe is provided with the liquid inlet.
9. The liquid-cooled cable plugging structure of claim 8, wherein the connecting assembly further comprises a second fastener sleeved on the periphery of the pipe body and the connecting pipe so as to lock and fix the pipe body and the connecting pipe.
10. A charging connector comprising a liquid-cooled cable plugging structure according to any one of claims 1 to 9.
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| CN201710915855.0A CN107681314B (en) | 2017-09-29 | 2017-09-29 | Liquid-cooled cable plug-in structure and charging connector |
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| CN201710915855.0A CN107681314B (en) | 2017-09-29 | 2017-09-29 | Liquid-cooled cable plug-in structure and charging connector |
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| CN107681314A CN107681314A (en) | 2018-02-09 |
| CN107681314B true CN107681314B (en) | 2024-03-19 |
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