CN217823615U

CN217823615U - Connector assembly with liquid cooling function and vehicle

Info

Publication number: CN217823615U
Application number: CN202220548045.2U
Authority: CN
Inventors: 王超; 苗云
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-11-15
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses a connector assembly and vehicle with liquid cooling function, connect the skeleton including an at least electricity and with the connector that the skeleton both ends are connected is connected to the electricity, and the periphery of electricity connection skeleton cup joints first sleeve pipe and second sleeve pipe in proper order, forms first cavity between the outer wall of electricity connection skeleton and the first sheathed tube inner wall, forms the second cavity between first sheathed tube outer wall and the second sheathed tube inner wall, first cavity with the coolant liquid circulates in the second cavity. The utility model discloses can reduce the electricity and connect skeleton and connecting terminal because of the inefficacy that the circular telegram produced high temperature and leads to, reduce the diameter of electricity connection skeleton, prolong the life of connector assembly, improve whole car security, play shielding electromagnetic interference's effect simultaneously.

Description

Connector assembly with liquid cooling function and vehicle

Technical Field

The utility model relates to an automotive electrical technical field, more specifically relates to a connector assembly and a vehicle with liquid cooling function.

Background

New energy automobile is more and more popular, and in new energy automobile's normal use, the electric wire cable that is used for electric energy transmission can flow through very big electric current, therefore cable and attach fitting all can produce a large amount of heats, because the heat is too big will lead to high temperature, and cable connection position and peripheral connecting piece, mounting can lose efficacy because of high temperature, influence the normal use of relevant device, produce short circuit and open circuit, even produce the danger of electrocuteeing, endanger life. Simultaneously, because the cable current is great in the car, can produce very strong electromagnetic interference, in order to reduce electromagnetic interference's influence, transmission cable adopts the shielding net to carry out electromagnetic interference's shielding usually, and the shielding net of present commonly used adopts the wire to compile to form, need increase the shielding braider in cable production facility, and the equipment price is high, and area is big, leads to the shielding cable price of connector to be high. At present, the shielding technology of the connector is not particularly perfect, and the electric appliances in the automobile are interfered and cannot be used. At present, no practical solution is provided for the above problems, and therefore, a connector assembly which has a small wire diameter, a low cable heat productivity and can realize automatic production and assembly is urgently needed in the technical field of automobile electrical appliances.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connector assembly and a new technical scheme of vehicle with liquid cooling function. The utility model discloses a connector assembly with liquid cooling function can reduce the electricity and connect skeleton and connecting terminal because of the inefficacy that the circular telegram produced high temperature and leads to, reduces the diameter of electricity connection skeleton, and the life of extension connector improves whole car security, plays shielding electromagnetic interference's effect simultaneously.

According to the utility model discloses an aspect provides a connector assembly with liquid cooling function, including an at least electricity connection skeleton and with the connector that the skeleton both ends are connected is connected to the electricity, its characterized in that, the periphery of electricity connection skeleton cup joints first sleeve pipe and second sleeve pipe in proper order, the outer wall of electricity connection skeleton with form first cavity between the first sheathed tube inner wall, first sheathed tube outer wall with form the second cavity between the second sheathed tube inner wall, first cavity with circulation coolant liquid in the second cavity.

Optionally, the material of the cooling liquid is an insulating material.

Optionally, the connector includes a connection terminal therein, and the electrical connection framework is electrically connected with the connection terminal by welding or crimping.

Optionally, the connection terminal is made of copper or a copper alloy.

Optionally, the material of the electrical connection framework is a rigid solid conductor material.

Optionally, the material of the electrical connection framework is aluminum or aluminum alloy.

Optionally, the cross-sectional area of the electrical connection skeleton is 1.5mm ² -240mm ² 。

Optionally, the first sleeve and the second sleeve are made of rigid materials.

Optionally, one of the first sleeve and the second sleeve is made of a conductive metal or a conductive plastic.

Optionally, the connector further comprises a shielding inner shell, and the shielding inner shell is made of conductive metal or conductive plastic.

Optionally, the transfer impedance of the conductive metal or the conductive plastic is less than 100m Ω.

Optionally, the conductive plastic is a polymer material containing conductive particles, and the conductive particles contain one of metal, conductive ceramic, carbon-containing conductor, solid electrolyte, and mixed conductor; the material of the high polymer material contains one of tetraphenyl ethylene, polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene/hexafluoropropylene copolymer, ethylene/tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, polyethylene terephthalate, polyurethane elastomer, styrene block copolymer, perfluoroalkoxy alkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, crosslinked polyolefin, ethylene propylene rubber, ethylene/vinyl acetate copolymer, chloroprene rubber, natural rubber, styrene butadiene rubber, nitrile rubber, silicone rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, butyl rubber, fluorine rubber, polyurethane rubber, polyacrylate rubber, chlorosulfonated polyethylene rubber, chlorinated polyether rubber, chlorinated polyethylene rubber, chlorosulfonated sulfur rubber, styrene butadiene rubber, hydrogenated nitrile rubber, polysulfide rubber, crosslinked polyethylene, polycarbonate, polysulfone, polyphenylene oxide, polyester, phenolic resin, urea formaldehyde, styrene-acrylonitrile copolymer, polymethacrylate, polyoxymethylene resin.

Optionally, the metal material contains one of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, and beryllium.

Optionally, the carbon-containing conductor contains one of graphite silver, graphene silver, graphite powder, carbon nanotube material, and graphene material.

Optionally, the second sleeve is made of conductive metal or conductive plastic, and the second sleeve is electrically connected to the shielding inner shell by crimping or welding.

Optionally, an impedance between the second sleeve and the shielding inner housing is less than 80m Ω.

Optionally, the first sleeve is made of conductive metal or conductive plastic, a shielding device is sleeved outside the end portion of the first sleeve, and the first sleeve is electrically connected with the shielding inner shell through the shielding device.

Optionally, the shielding device is provided with at least one first through hole in the axial direction of the electrical connection framework.

Optionally, the sum of the cross-sectional areas of the first through holes accounts for 5% -90% of the cross-sectional area of the shielding device.

Optionally, at least one first support ring is arranged in the first cavity, the inner wall of the first support ring is in contact with the outer periphery of the electrically connected framework, and the outer wall of the first support ring is in contact with the inner wall of the first sleeve.

Optionally, the first support ring is provided with at least one second through hole in the axial direction of the electrical connection framework.

Optionally, the sum of the cross-sectional areas of the second through holes accounts for 5% -90% of the cross-sectional area of the first cavity.

Optionally, at least one second support ring is disposed inside the second cavity, an inner wall of the second support ring is in contact with an outer periphery of the first sleeve, and an outer wall of the second support ring is in contact with an inner wall of the second sleeve.

Optionally, the second support ring is provided with at least one third through hole in the axial direction of the electrical connection skeleton.

Optionally, the sum of the cross-sectional areas of the third through holes accounts for 5% -90% of the cross-sectional area of the second cavity.

Optionally, at least one first support ring is arranged inside the first cavity, at least one second support ring is arranged inside the second cavity, the electric connection framework, the first sleeve and the second sleeve are provided with bending portions, and at least the two ends and the middle position of the bending portion arc are respectively provided with the first support ring and the second support ring.

Optionally, the thicknesses of the first sleeve and the second sleeve respectively account for 0.1% -20% of the outer diameter of the electrical connection framework.

Optionally, the difference in cross-sectional area between the first cavity and the second cavity is no more than 20%.

Optionally, the connector includes a first connector and a second connector connected to two ends of the electrical connection framework, a rotary cavity is disposed inside the first connector, and the rotary cavity is communicated with the first cavity and the second cavity; the inside switching cavity that sets up of second connector, the switching cavity with first cavity intercommunication, set up the intercommunication on the second sleeve pipe the induction pipe of second cavity, the induction pipe passes second connector outer wall and stretch out to the second connector outside, the second connector outside sets up the intercommunication the contact tube of switching cavity.

Optionally, the end of the second cavity is sealingly arranged.

Optionally, the connector includes a first connector and a second connector connected to two ends of the electrical connection skeleton, a rotary cavity is arranged inside the first connector, and the rotary cavity is communicated with the first cavity and the second cavity; the second connector is internally provided with a switching cavity, the switching cavity is communicated with the second cavity, the first sleeve is provided with an inlet pipe communicated with the first cavity, the inlet pipe penetrates through the side wall of the second sleeve and the outer wall of the second connector and extends out of the outer side of the second connector, and the outer side of the second connector is provided with an outlet pipe communicated with the switching cavity.

Optionally, the ends of the first cavity body are sealingly disposed.

Optionally, a first sealing structure is provided between the ingress and egress tubes and the second connector.

Optionally, a second sealing structure is provided between the connector and the second sleeve.

Optionally, the cooling liquid has a boiling point of 100 ℃ or higher.

Optionally, the cooling fluid comprises water, ethylene glycol, silicone oil, fluorinated fluids, castor oil, coconut oil, corn oil, cottonseed oil, linseed oil, olive oil, palm oil, peanut oil, grapeseed oil, rapeseed oil, safflower oil, sunflower oil, soybean oil, high oleic variants of various vegetable oils, decen-4-oic acid, decenoic acid, lauric acid, lindera acid, tetradecenoic acid, sperm whale acid, crude rentic acid, palmitoleic acid, petroselinic acid, oleic acid, octadecenoic acid, gadoleic acid, macrocephalic acid, cetenoic acid, erucic acid, and one of nervonic acid, glycerol, transformer oil, axle oil, internal combustion engine oil, or compressor oil.

Optionally, the cooling rate of the cooling liquid to the electric connection framework is 0.04K/s-5K/s.

Optionally, a partial region of the electrical connection skeleton is a flexible body.

The electric connection framework comprises at least one bending part

Optionally, one of the connectors is a cradle.

The electric vehicle comprises the connector assembly with the liquid cooling function, a circulating pump and a cooling device, wherein the first cavity or the second cavity is communicated with the circulating pump and the cooling device respectively.

Optionally, the inlet pipe is communicated with a liquid inlet of the circulating pump, a liquid outlet of the circulating pump is communicated with a liquid inlet of the cooling device, and a liquid outlet of the cooling device is communicated with the outlet pipe.

The beneficial effects of the utility model are that:

1. the problem of present high-voltage wire harness wire footpath thick is solved, uses the liquid cooling technique, reduces the calorific capacity of electricity connection skeleton, makes the electricity connect the skeleton can switch on great electric current with less wire footpath.

2. The problem of present high-pressure pencil use flexible cable, can't realize automated production and assembly is solved, use the electric connection skeleton of at least part stereoplasm, can realize the automatic assembly and the equipment of pencil.

3. The problem of solving present liquid cooling pencil cooling efficiency low, present liquid cooling pencil all cools off through the liquid cooling pipe, the utility model discloses a skeleton contact is connected with the electricity to the coolant liquid is direct, can reduce the temperature of electricity connection skeleton rapidly, realizes that the heavy current switches on.

4. The problem of flexible cable and hull contact friction, lead to the damaged short circuit of insulating layer is solved, the electric connection skeleton can follow the automobile body shape and arrange, but also can have the certain distance with the automobile body, can guarantee not rub with the hull to guarantee the life of electric connection skeleton.

5. The connector is internally provided with the shielding inner shell, so that electromagnetic interference generated by a terminal of the connector can be effectively prevented, the shielding inner shell made of conductive plastic can be integrally formed with the connector in an injection molding mode, the processing time is saved, the production efficiency is improved, and the production cost is reduced.

6. The electric connection framework is further provided with a flexible part and a bending part, so that the structure of the connector assembly can be reasonably designed according to the installation environment of the automobile body, the connector assembly is easier to install on the automobile body, and the assembly time is saved.

7. The sealing ring can prevent revealing of junction coolant liquid, and the cavity can be supported to the support ring, prevents that it from receiving the circulation that external force extrusion deformation influences the coolant liquid.

8. The form that a plurality of sleeve pipes are sleeved and connected with the framework electrically is adopted, the sleeve pipes play a role in constructing a cavity and a role in a shielding layer, and electromagnetic interference generated by electrifying of the framework is effectively shielded and connected electrically.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural view of the connector assembly with liquid cooling function of the present invention.

Fig. 2 is an internal schematic view of the connector assembly with liquid cooling function according to the present invention.

Fig. 3 is a cross-sectional view of the electrical connection frame of the connector assembly with liquid cooling function of the present invention.

Fig. 4 is a schematic structural diagram of the shielding inner shell of the connector assembly with liquid cooling function according to the present invention.

Fig. 5 is a schematic view illustrating another connection mode of the shielding inner shell of the connector assembly with liquid cooling function according to the present invention.

Fig. 6 is a schematic structural view of the bending portion of the connector assembly with liquid cooling function according to the present invention.

Fig. 7 isbase:Sub>A cross-sectional view taken along planebase:Sub>A-base:Sub>A of fig. 6.

Fig. 8 is a schematic structural view of the liquid-cooled inlet pipe of the connector assembly of the present invention.

Fig. 9 is a schematic structural view of the rotary cavity of the connector assembly with liquid cooling function according to the present invention.

Fig. 10 is a schematic structural view of the adapter cavity of the connector assembly with liquid cooling function according to the present invention.

Fig. 11 is a schematic structural view of the inlet tube and the outlet tube of the connector assembly with liquid cooling function according to the present invention.

Fig. 12 is a schematic view of another connection mode of the liquid-cooled inlet tube and outlet tube of the connector assembly according to the present invention.

Fig. 13 is a schematic view of the liquid inlet and return of the connector assembly with liquid cooling function of the present invention.

Fig. 14 is a schematic view of another liquid feeding and returning manner of the connector assembly with liquid cooling function according to the present invention.

The figures are labeled as follows:

the connector comprises a 1-connector, a 11-first connector, a 12-second connector, a 2-electric connection framework, a 3-connection terminal, a 4-shielding inner shell, a 5-first sleeve, a 51-first cavity, a 511-first support ring, a 512-second through hole, a 52-shielding device, a 521-first through hole, a 6-second sleeve, a 61-second cavity, a 611-second support ring, a 612-third through hole, a 7-second sealing structure, an 81-rotary cavity, an 82-switching cavity, an 83-leading-in pipe, an 84-leading-out pipe, a 9-circulating pump and a 10-cooling device.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

The utility model provides a connector 1 assembly with liquid cooling function, as shown in fig. 1-14, including at least one electricity connect skeleton 2 and with the connector 1 that 2 both ends of electricity connect the skeleton are connected, the periphery of electricity connect skeleton 2 cup joints first sleeve 5 and second sleeve 6 in proper order, the outer wall of electricity connect skeleton 2 with form first cavity 51 between the inner wall of first sleeve 5, the outer wall of first sleeve 5 with form second cavity 61 between the inner wall of second sleeve 6, first cavity 51 with the second cavity 61 mesolow cooling liquid.

At present, multi-core copper cables are used for charging cables on most connector assemblies, so that the charging cables are heavy in weight and high in price, and become obstacles for limiting the popularization of new energy automobiles. In addition, although the multi-core cable is soft, the multi-core cable can be conveniently processed and wired, due to the fact that the diameter of the cable is too thick and the weight of the multi-core cable is large, the cable can frequently rub a car shell in the driving process of a car, an insulating layer of the cable is damaged, high-voltage discharge is caused, the car is damaged slightly, and serious traffic accidents are caused seriously. Therefore, the cable form of the electric connection framework 2 can be used for replacing a multi-core cable structure, so that the cable can be fixed on a car shell, the friction between the cable and the car shell along with the vibration of a car can be avoided, the service life of the connector assembly is prolonged, and the accident rate is reduced. When the automobile charges, the current flowing through the electric connection framework 2 is very large, the temperature of the electric connection framework 2 is rapidly increased, the cooling liquid flowing through the first cavity 51 and the second cavity 61 plays a cooling role in the electric connection framework 2, so that the electric connection framework 2 generating heat is cooled, and the connector assembly can work at a safe temperature.

In some embodiments, the connector 1 includes a connection terminal 3 therein, and the electrical connection skeleton 2 is electrically connected to the connection terminal 3 by soldering or pressing. The connecting terminal 3 and the electric connection framework 2 are connected through welding, and the adopted welding modes comprise one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding and magnetic induction welding, so that the contact positions of the connecting terminal 3 and the electric connection framework 2 are in fusion connection by adopting concentrated heat energy or pressure, and the welding modes are stable in connection.

In addition, the metal inertia of copper is larger than that of aluminum, the electrode potential difference between copper and aluminum is 1.9997V, the two metals can generate electrochemical reaction after being connected and electrified, the aluminum wire is gradually oxidized, the mechanical strength and the conductivity of the aluminum wire are reduced, the connection of dissimilar materials can be realized by adopting a welding mode, and the conductive effect is better because the contact positions are mutually fused.

The resistance welding method is a method of welding by using a strong current to pass through a contact point between an electrode and a workpiece and generating heat by a contact resistance.

The friction welding method is a method of welding by plastically deforming a workpiece under pressure using heat generated by friction of a contact surface of the workpiece as a heat source.

The ultrasonic welding method is a method in which a high-frequency vibration wave is transmitted to the surfaces of two objects to be welded, and the surfaces of the two objects are rubbed against each other under pressure to form fusion between molecular layers.

The arc welding method is a method of connecting metals by converting electric energy into heat energy and mechanical energy required for welding using an arc as a heat source by utilizing a physical phenomenon of air discharge, and the main methods include shielded metal arc welding, submerged arc welding, gas shielded welding, and the like.

The laser welding method is an efficient and precise welding method using a laser beam with high energy density as a heat source.

The electron beam welding mode is that accelerated and focused electron beams are used to bombard the welding surface in vacuum or non-vacuum to melt the workpiece to be welded for welding.

The pressure welding method is a method of applying pressure to a workpiece to bring the joining surfaces into close contact with each other to generate a certain plastic deformation, thereby completing welding.

The magnetic induction welding mode is that two workpieces to be welded produce instantaneous high-speed collision under the action of strong pulse magnetic field, and the surface layer of the material makes the atoms of the two materials meet in the interatomic distance under the action of very high pressure wave, so that a stable metallurgical bonding is formed on the interface. Is one type of solid state cold welding that can weld together conductive metals that may or may not have similar properties.

In some embodiments, the cooling fluid is made of an insulating material. Like insulating oil, the insulating oil can quickly conduct the high temperature of the electric connection framework 2 to the outside, and the purpose of quick cooling is achieved. And the electric connection framework 2 and the protective shell are not electrically connected, so that the electric connection framework and the protective shell realize the electric conduction functions of different loops.

In some embodiments, the material of the electrical connection skeleton 2 is a rigid solid conductor material. The electric connection framework 2 is formed by a solid wire, and the specific material can be copper or copper alloy with excellent electric conductivity, aluminum or aluminum alloy, and can be fixed on the automobile shell, so that the friction between the automobile shell and the automobile shell along with the vibration of the automobile can be avoided, the service life of the connector assembly is prolonged, and the accident rate is reduced.

In some embodiments, the cross-sectional area of the electrical connection backbone 2 is 1.5mm ² -240mm ² . The cross-sectional area of the electrical connection frame 2 determines the current that the electrical connection frame 2 can conduct, generally, the electrical connection frame 2 that realizes signal conduction has a smaller current and the cross-sectional area of the electrical connection frame 2 is smaller, for example, the minimum cross-sectional area of the electrical connection frame 2 for transmitting signals can reach 1.5mm ² The electric connection framework 2 for realizing the power supply conduction has larger current, and the sectional area of the electric connection framework 2 is also larger, for example, the maximum sectional area of the conductor 2 reaches 240mm ² 。

In some embodiments, the first sleeve 5 and the second sleeve 6 are made of rigid materials. The rigid body is an object which has unchanged shape and size and does not change the relative position of each point in the rigid body after movement and stress. An absolute rigid body is practically nonexistent and is only an ideal model, because any object is deformed to a greater or lesser extent after being stressed, and if the degree of deformation is very small relative to the geometric dimension of the object itself, the deformation can be ignored when the motion of the object is studied. Therefore, the first sleeve 5 and the second sleeve 6 made of rigid materials generate very little deformation and can be ignored during the use process, and the higher the tensile strength of the rigid body is, the smaller the deformation amount is.

In some embodiments, one of the first sleeve 5 and the second sleeve 6 is made of a conductive metal or a conductive plastic. The conductive plastic is conductive plastic or conductive rubber containing metal particles. The conductive plastic has the advantages that the conductive plastic is convenient to perform injection molding, and a user can select the first sleeve 5 or the second sleeve 6 made of a proper material according to needs.

In some embodiments, the connector 1 further includes a shielding inner housing 4, and the material of the shielding inner housing 4 is conductive metal or conductive plastic. As shown in fig. 2, in order to reduce the influence of electromagnetic interference, the conductive cable generally adopts a shielding net to shield the electromagnetic interference, the shielding net commonly used at present is woven by metal wires, a shielding braiding machine needs to be added in the cable production equipment, the equipment price is high, the occupied area is large, and the price of the shielding cable of the connector 1 is high. And the utility model discloses well shielding inner shell 4 that adopts conducting material to make can play the effect of shielding layer, and the electromagnetic interference that skeleton 2 circular telegrams produced is connected to effectual shielding electricity, has saved the use of shielding net, has reduced the cost of connector assembly.

In some embodiments, the transfer impedance of the conductive metal or conductive plastic is less than 100m Ω. The shielding material is usually characterized by a transfer impedance, and the smaller the transfer impedance, the better the shielding effect of the shielding inner shell 4. The transfer impedance of the shielded inner housing 4 is defined as the differential mode voltage induced by the shield per unit lengthThe ratio of U to the current Is passing through the surface of the shield, namely: z _T ＝U/I _S It can therefore be understood that the transferred impedance of the shield inner case 4 converts the shield inner case 4 current into differential mode interference. The smaller the transfer impedance, the better, namely, the differential mode interference conversion is reduced, and the better shielding performance can be obtained.

In order to verify the influence of the shielding inner shells 4 with different transfer impedance values on the shielding effect, the inventor selects the electrical connection framework 2, the connector 1 and the connection terminal 3 with the same specification, adopts the protective shells 5 with different transfer impedance values, manufactures a series of samples, and respectively tests the shielding effect, and the experimental result is shown in the following table 1, in this embodiment, the shielding performance value is greater than 40dB, which is an ideal value.

The shielding performance value test method comprises the following steps: the test instrument outputs a signal value (the value is a test value 2) to the electric connection framework 2, and a detection device is arranged on the outer side of the electric connection framework 2 and detects a signal value (the value is a test value 1). Shielding performance value = test value 2-test value 1.

Table 1: influence of the transfer impedance of the shielded inner housing 4 on the shielding performance

As can be seen from table 1 above, when the transfer resistance value of the shield inner case 4 is greater than 100m Ω, the shield performance value of the shield inner case 4 is less than 40dB, which is not in accordance with the requirement of the ideal value, and when the transfer resistance value of the shield inner case 4 is less than 100m Ω, the shield performance values of the shield inner case 4 are all in accordance with the requirement of the ideal value, and the trend is getting better, and therefore, the inventors set the transfer resistance of the conductive metal or the conductive plastic to be less than 100m Ω.

In some embodiments, the conductive plastic is a polymer material containing conductive particles, and the conductive particles comprise one of metal, conductive ceramic, carbon-containing conductor, solid electrolyte, and mixed conductor; the material of the high polymer material contains one of tetraphenyl ethylene, polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene, tetrafluoroethylene/hexafluoropropylene copolymer, ethylene/tetrafluoroethylene copolymer, polypropylene, polyvinylidene fluoride, polyurethane, poly terephthalic acid, polyurethane elastomer, styrene block copolymer, perfluoroalkoxy alkane, chlorinated polyethylene, polyphenylene sulfide, polystyrene, crosslinked polyolefin, ethylene-propylene rubber, ethylene/vinyl acetate copolymer, chloroprene rubber, natural rubber, styrene-butadiene rubber, nitrile rubber, silicone rubber, butadiene rubber, isoprene rubber, ethylene-propylene rubber, butyl rubber, fluorine rubber, polyurethane rubber, polyacrylate rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, chlorinated polyethylene rubber, chlorosulfonated sulfur rubber, styrene butadiene rubber, hydrogenated nitrile rubber, polysulfide rubber, crosslinked polyethylene, polycarbonate, polysulfone, polyphenylene oxide, polyester, phenolic resin, urea formaldehyde, styrene-acrylonitrile copolymer, polymethacrylate, and polyoxymethylene resin.

In some embodiments, the metal material includes one of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, and beryllium. In order to demonstrate the influence of different metal materials on the conductivity of the inner shielding shell 4, the inventors performed experiments to manufacture samples of the inner shielding shell 4 using metal particles with the same specification and size and different materials, and respectively test the conductivity of the inner shielding shell 4, and the experimental results are shown in table 2 below, where in this embodiment, the conductivity of the inner shielding shell 4 is greater than 99% as an ideal value.

Table 2: influence of metallic particles of different materials on the conductivity of the shielded inner shell 4

As can be seen from table 2 above, the conductivity of the conductive plastic made of different metal particles is within the ideal value range, and in addition, phosphorus is a non-metal material and cannot be directly used as a material of the conductive plating layer, but can be added into other metals to form an alloy, so that the conductivity and mechanical properties of the metal itself are improved. Therefore, the inventors set the material of the metal particles to be one of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, and beryllium.

In some embodiments, the carbon-containing conductor comprises one of graphite silver, graphene silver, graphite powder, carbon nanotube material, graphene material. The graphite powder is mineral powder, and the main components are carbon simple substance, soft and black gray; graphite powder is a good non-metallic conductive substance. The carbon nano tube has good electric conductivity, and the structure of the carbon nano tube is the same as the lamellar structure of graphite, so the carbon nano tube has good electric property. The graphene has extremely high electrical properties, and the carbon-containing conductor containing the three materials has high conductivity and good shielding property, and can well realize electromagnetic shielding.

In some embodiments, the second sleeve 6 is made of a conductive metal or a conductive plastic, and the second sleeve 6 is electrically connected to the shielding inner shell 4 by pressing or welding. As shown in fig. 2, the second sleeve 6 is electrically connected to the inner shielding shell 4, and the crimping is a production process of assembling the inner shielding shell 4 and the second sleeve 6 and then punching the two into a whole by using a crimping machine. The crimping has an advantage of mass productivity, and a product of stable quality can be rapidly manufactured in a large quantity by using an automatic crimping machine. The welding mode is basically the same as that of the connection terminal 3 and the electric connection framework 2, and is not described again.

In some embodiments, the impedance between the second ferrule 6 and the shielded inner housing 4 is less than 80m Ω. The impedance between the second bushing 6 and the inner shielding shell 4 is as small as possible so that the current generated by the inner shielding shell 4 flows unimpeded back to the energy source or the ground, and if the impedance between the second bushing 6 and the inner shielding shell 4 is large, a large current is generated between the second bushing 6 and the inner shielding shell 4, so that a large radiation is generated at the cable connection.

In order to verify the influence of the impedance value between the second sleeve 6 and the shielding inner shell 4 on the shielding effect, the inventor selects the same specification of the electrical connection framework 2, the connector 1 and the connection terminal 3, selects different impedances between the second sleeve 6 and the shielding inner shell 4, and manufactures a series of samples to respectively test the shielding effect, and the experimental result is shown in the following table 3, wherein in the embodiment, the shielding performance value is greater than 40dB, which is an ideal value.

Table 3: influence of the impedance between the second sleeve 6 and the inner shielding shell 4 on the shielding performance

As can be seen from table 3, when the impedance value between the second bushing 6 and the shield inner case 4 is greater than 80m Ω, the shielding performance value is less than 40dB, which does not meet the requirement of the ideal value, and when the impedance value between the second bushing 6 and the shield inner case 4 is less than 80m Ω, the shielding performance values all meet the requirement of the ideal value, and the trend is better, and therefore, the inventors set the impedance between the second bushing 6 and the shield inner case 4 to be less than 80m Ω.

In some embodiments, the first sleeve 5 is made of conductive metal or conductive plastic, a shielding device 52 is sleeved outside an end portion of the first sleeve 5, and the first sleeve 5 is electrically connected to the shielding inner shell 4 through the shielding device 52. As shown in fig. 4, the first sleeve 5 is directly electrically connected to the shielding inner shell 4, and in this embodiment, as shown in fig. 5, the first sleeve 5 is not directly electrically connected to the shielding inner shell 4, but a shielding device 52 is sleeved on the periphery of the end of the first sleeve 5, so that the first sleeve 5 is electrically connected to the shielding inner shell 4 through the shielding device 52.

In some embodiments, the shielding means 52 is provided with at least one first through hole 521 in the axial direction of said electrical connection skeleton 2. In order to make the cooling liquid smoothly flow through the shielding device 52, the shielding device 52 is provided with at least one first through hole 521 in the axial direction of the electrical connection framework 2, so that the cooling liquid can smoothly pass through the shielding device 52, and a cooling effect is obtained, as shown in fig. 5.

In some embodiments, the sum of the cross-sectional areas of the first through-hole 521 accounts for 5% -90% of the cross-sectional area of the shielding means 52. In order to select a reasonable sum of the sectional areas of the first through holes 521, the inventor has carried out a relevant test by selecting the same electric connecting frames 2 with the same shielding device 52, arranging the first through holes 521 with different sectional areas in the shielding device 52, applying a force of 80N, observing whether the shielding device 52 is deformed, and if the deformation is unqualified. In a closed environment, the same current is conducted to the electric connection framework 2 with different first through holes 521, and the temperature rise is less than 50K, which is a qualified value. The results are shown in Table 4.

Table 4: the influence of the sum of the cross-sectional areas of the first through holes 521 on the temperature rise of the supporting and electrically connecting framework 2 of the shielding device 52 compared with the cross-sectional area of the shielding device 52

As can be seen from table 4 above, when the ratio of the sum of the cross-sectional areas of the first through holes 521 to the cross-sectional area of the shielding device 52 is less than 5%, the temperature rise of the electrically connecting frame 2 is greater than 50K, which is not acceptable, and when the ratio of the sum of the cross-sectional areas of the first through holes 521 to the cross-sectional area of the shielding device 52 is greater than 90%, the shielding device 52 is deformed under the action of 80N, which easily causes the cooling rate to decrease, and even the cooling liquid to leak, therefore, the inventors prefer that the ratio of the sum of the cross-sectional areas of the first through holes 521 to the cross-sectional area of the shielding device 52 is 5% to 90%.

In some embodiments, at least one first support ring 511 is disposed inside the first cavity 51, an inner wall of the first support ring 511 is in contact with an outer circumference of the electrical connection skeleton 2, and an outer wall of the first support ring 511 is in contact with an inner wall of the first sleeve 5. As shown in fig. 6 to 7, the first support ring 511 can support the first cavity 51, prevent the first cavity 51 from being narrowed due to external compression, and thus prevent the cooling efficiency of the connector assembly from being lowered, and prevent the electrical connection frame 2 from being short-circuited due to contact with the first sleeve 5. The number of the first supporting rings 511 can be set to be multiple, the first supporting rings 511 can be fixed on the electric connection framework 2 firstly during processing, then the first sleeve 5 is sleeved, and the first sleeve 5 is extruded to enable the outer wall of the first supporting ring 511 to be in contact with the inner wall of the first sleeve 5.

Further, the first support ring 511 is provided with at least one second through hole 512 in the axial direction of the electrical connection skeleton 2. As shown in fig. 7, in order to prevent the first support ring 511 from blocking the cooling liquid and reducing the cooling efficiency of the connector assembly, the first support ring 511 is provided with at least one second through hole 512 in the axial direction of the electrical connection frame 2, so that the cooling liquid can smoothly pass through the first support ring 511, and the cooling effect is obtained.

Furthermore, the sum of the cross-sectional areas of the second through holes 512 accounts for 5% -90% of the cross-sectional area of the first cavity 51. If the sum of the sectional areas of the second through holes 512 is too large, the supporting force of the first supporting ring 511 is insufficient, if the sum of the sectional areas of the second through holes 512 is too small, the cooling efficiency is insufficient, and in order to select a reasonable sum of the sectional areas of the second through holes 512, the inventor has performed a relevant test by selecting the same electrically connecting skeleton 2 to have the same first cavity 51, arranging the first supporting ring 511 having different second through holes 512 in the first cavity 51, applying a force of 80N, observing whether the first cavity 51 is deformed, and if the deformation is not qualified. In a closed environment, the same current is conducted to the electric connection framework 2 with different second through holes 512, and the temperature rise is less than 50K, which is a qualified value. The results are shown in Table 5.

Table 5: the sum of the cross-sectional areas of the second through holes 512 accounts for the influence of the cross-sectional area of the first cavity 51 on the temperature rise of the first cavity supporting and electrically connecting framework 2

As can be seen from the above table 5, when the sum of the cross-sectional areas of the second through holes 512 accounts for less than 5% of the cross-sectional area of the first cavity 51, the temperature rise of the electrically connected skeleton 2 is greater than 50K, which is not qualified, and when the sum of the cross-sectional areas of the second through holes 512 accounts for more than 90% of the cross-sectional area of the first cavity 51, the first cavity 51 deforms under the action of 80N, which easily causes the cooling rate to decrease, and even the cooling liquid to leak, therefore, the inventor prefers that the sum of the cross-sectional areas of the second through holes 512 accounts for 5% -90% of the cross-sectional area of the first cavity 51.

In some embodiments, at least one second support ring 611 is disposed inside the second cavity 61, as shown in fig. 6, the inner wall of the second support ring 611 is in contact with the outer circumference of the first sleeve 5, and the outer wall of the second support ring 611 is in contact with the inner wall of the second sleeve 6. The second support ring 611 may support the second cavity 61, preventing the second cavity 61 from being narrowed due to external compression, resulting in a decrease in the cooling efficiency of the connector assembly, while avoiding a short circuit caused by contact between the first and

second ferrules

5 and 6. The number of the second support rings 611 may be set to be plural, and the first sleeve 5 may be fixed first during processing, and then the second sleeve 6 may be sleeved, so that the outer wall of the second support ring 611 contacts with the inner wall of the second sleeve 6 by pressing the second sleeve 6.

Further, the second support ring 611 is provided with at least one third through hole 612 in the axial direction of the electrical connection framework 2. As shown in fig. 7, in order to prevent the second support ring 611 from blocking the cooling liquid and causing a reduction in the cooling efficiency of the connector assembly, the second support ring 611 is provided with at least one third through hole 612 in the axial direction of the electrical connection frame 2, so that the cooling liquid can smoothly pass through the second support ring 611 and a cooling effect can be obtained.

Furthermore, the sum of the cross-sectional areas of the third through holes 612 accounts for 5% -90% of the cross-sectional area of the second cavity 61. If the sum of the cross-sectional areas of the third through holes 612 is too large, the supporting force of the second supporting ring 611 is insufficient, if the sum of the cross-sectional areas of the third through holes 612 is too small, the cooling efficiency is insufficient, in order to select a reasonable sum of the cross-sectional areas of the third through holes 612, the inventor has performed relevant tests, the experimental method is the same as the method for verifying that the cross-sectional area of the second through hole 512 accounts for the cross-sectional area of the first cavity 51, and is not described herein again, therefore, the inventor prefers that the ratio of the sum of the cross-sectional areas of the third through holes 612 to the cross-sectional area of the second cavity 61 is 5% -90%.

In some embodiments, at least one first support ring 511 is disposed inside the first cavity 51, at least one second support ring 611 is disposed inside the second cavity 61, the electrical connection framework 2, the first sleeve 5 and the second sleeve 6 have a curved portion, and the first support ring 511 and the second support ring 611 are disposed at least at two ends and in the middle of the curved portion. As shown in fig. 6 to 7, the first supporting ring 511 can support the first cavity 51, prevent the first cavity 51 from being narrowed due to external compression, and prevent the cooling efficiency of the connector assembly from being reduced, and prevent the electrical connection frame 2 from being in contact with the first sleeve 5 to cause short circuit. The first support ring 511 may be provided in number in plural; the second support ring 611 may support the second cavity 61, and the number of the second support rings 611 may be provided in plurality. The arc shape formed at the bending position is more easily squeezed, so that the first support ring 511 and the second support ring 611 provided at both ends and in the middle of the arc shape of the bending portion can play a better supporting role.

In some embodiments, the first sleeve 5 and the second sleeve 6 each have a thickness of 0.1% -20% of the outer diameter of the electrical connection backbone 2. If the thickness of the first sleeve 5 is too small, the conductivity is insufficient and the shielding effect cannot be satisfied. If the thickness of the first sleeve 5 is too large, material is wasted and the weight of the vehicle body is increased. To demonstrate the influence of the ratio of the different first sleeves 5 occupying the outer diameter of the electrical connection framework 2 on the electrical conductivity of the first sleeves 5, the inventors manufactured samples of the first sleeves 5 with different thicknesses and the same material, and tested the electrical conductivity separately, and the experimental results are shown in table 6.

Table 6: the influence of the different thicknesses of the first sleeve 5 on the electrical conductivity of the ratio of the outer diameter of the electrical connection frame 2

As can be seen from table 6, when the thickness of the first bushing 5 is less than 0.1% of the outer diameter of the electrical connection bobbin 2, the electrical conductivity of the first bushing 5 is less than 99%, which is not acceptable, and when the ratio of the thickness of the first bushing 5 to the outer diameter of the electrical connection bobbin 2 is more than 20%, the electrical conductivity has not been significantly increased, the shielding effect is not further enhanced, and the thicker first bushing 5 increases the cost and the weight of the vehicle body, so the inventor prefers that the thickness of the first bushing 5 is 0.1% to 20% of the outer diameter of the electrical connection bobbin 2.

In some embodiments, the cross-sectional area difference between the first cavity 51 and the second cavity 61 is no more than 20%. In practical application, the cross sectional areas of the first cavity 51 and the second cavity 61 are the same or the area difference is less than 20%, so that the flux of the cooling liquid flowing through the first cavity 51 and the second cavity 61 is consistent, and the cooling efficiency is ensured.

In some embodiments, the connector 1 includes a first connector 11 and a second connector 12 connected to two ends of the electrical connection skeleton 2, a rotary cavity 81 is disposed inside the first connector 11, and the rotary cavity 81 is communicated with the first cavity 51 and the second cavity 61; the inside adapter cavity 82 that sets up of second connector 12, adapter cavity 82 with first cavity 51 communicates, set up on the second sleeve 6 and communicate the induction pipe 83 of second cavity 61, induction pipe 83 passes second connector 12 outer wall and stretches out to the second connector 12 outside, the second connector 12 outside sets up the contact tube 84 that communicates adapter cavity 82, as shown in fig. 9.

Further, the end of the second cavity 61 is sealed. Normally, the second cavity 61 is communicated with the adaptor cavity 82, so when the introducing pipe 83 is arranged on the second sleeve 6 to communicate with the second cavity 61, the end of the second cavity 61 needs to be sealed to isolate the communication state between the second cavity 61 and the adaptor cavity 82.

In some embodiments, the connector 1 includes a first connector 11 and a second connector 12 connected to two ends of the electrical connection framework 2, a rotary cavity 81 is disposed inside the first connector 11, and the rotary cavity 81 is communicated with the first cavity 51 and the second cavity 61; a switching cavity 82 is arranged inside the second connector 12, the switching cavity 82 is communicated with the second cavity 61, an introducing pipe 83 communicated with the first cavity 51 is arranged on the first sleeve 5, the introducing pipe 83 penetrates through the outer wall of the second connector 12 and extends out of the second connector 12, and an outlet pipe 84 communicated with the switching cavity 82 is arranged outside the second connector 12, as shown in fig. 10.

Further, the end of the first cavity 51 is sealed. Normally, the first cavity 51 is communicated with the adaptor cavity 82, and therefore, when the introducing pipe 83 is disposed on the first sleeve 5 to communicate with the first cavity 51, the end of the first cavity 51 needs to be sealed to isolate the communication state between the first cavity 51 and the adaptor cavity 82.

In some embodiments, a first sealing structure is provided between the inlet tube 83 and the outlet tube 84 and the second connector 12. A first sealing structure is provided between the inlet pipe 83 and the outlet pipe 84 and the second connector 12, and prevents the coolant from leaking from the connection between the inlet pipe 83 and the outlet pipe 84 and the second connector 12.

In some embodiments, a second sealing structure 7 is provided between the connector 1 and the second sleeve 6. As shown in fig. 2, the second seal structure 7 can prevent the coolant from leaking from the connection between the connector 1 and the protective housing 5.

In some embodiments, the cooling fluid has a boiling point of 100 ℃ or higher. Different cooling liquids have different boiling points under the same external pressure, and the boiling points of the cooling liquids are different due to the characteristics and the components of the cooling liquids. At present, the boiling point of the cooling liquid is more than 100 ℃, and the phenomenon of boiling is not easy to generate. Since a large amount of vapor and a large amount of bubbles are generated once the coolant reaches the boiling point, and a part of the area of the cooling system is occupied by the bubbles, the cooling efficiency is reduced by blocking the circulation of the coolant, and therefore, the boiling point of the coolant is preferably 100 ℃.

In some embodiments, the cooling fluid comprises one of water, ethylene glycol, silicone oil, fluorinated fluids, castor oil, coconut oil, corn oil, cottonseed oil, linseed oil, olive oil, palm oil, peanut oil, grapeseed oil, rapeseed oil, safflower oil, sunflower oil, soybean oil, high oleic variants of various vegetable oils, decene-4-acid, decenoic acid, myrcenic acid, gardenic acid, tetradecenoic acid, sperm whale acid, crude rential acid, palmitoleic acid, petroselic acid, oleic acid, octadecenoic acid, gadoleic acid, macrocephalic acid, cetoleic acid, erucic acid, and nervonic acid, glycerol, transformer oil, axle oil, internal combustion engine oil, or compressor oil. Additives selected from one or more of antioxidants, pour point depressants, corrosion inhibitors, antimicrobial agents, viscosity modifiers may also be added to the cooling fluid. The cooling liquid has the advantages of sensitive heat balance capability, super strong heat conduction capability, super wide working temperature range, boiling and boiling prevention and the like.

In some embodiments, the cooling liquid cools the electrical connection backbone 2 at a rate of 0.04K/s to 5K/s. In order to verify the effect of the cooling rate of the cooling liquid on the temperature rise of the electrically-connected frameworks 2, the inventor selected 10 electrically-connected frameworks 2 with the same cross-sectional area, the same material and the same length, passed the same current, cooled the electrically-connected frameworks 2 by using the cooling liquid with different cooling rates, read the temperature rise value of each electrically-connected framework 2, and recorded it in table 7.

The experimental method is that in a closed environment, the same current is conducted to the electric connection framework 2 adopting cooling liquid with different cooling rates, the temperature before electrifying and the temperature after electrifying are stable are recorded, and the absolute value is obtained by taking the difference. In this embodiment, a temperature rise of less than 50K is a qualified value.

Table 7: influence of cooling liquid with different cooling rates on temperature rise of electric connection framework 2

As can be seen from table 7 above, when the cooling rate of the cooling structure 3 is less than 0.04K/s, the temperature rise value of the electrically-connected bobbin 2 is not qualified, and the larger the cooling rate of the cooling structure 3 is, the smaller the temperature rise value of the electrically-connected bobbin 2 is. However, when the cooling rate of the cooling liquid is more than 5K/s, the temperature rise of the electric connection skeleton 2 is not significantly reduced, and a higher cooling rate means a higher price and a more complicated process, and therefore, the inventors set the cooling rate of the cooling structure 3 to 0.04K/s to 5K/s.

In some embodiments, a portion of the electrical connection backbone 2 is flexible. The flexible body can ensure that the electric connection framework 2 can be bent to a larger angle so as to be conveniently arranged in a vehicle body with a larger corner.

In some embodiments, the electrical connection skeleton 2 comprises at least one bent portion, and the existence of the bent portion can enable the electrical connection skeleton 2 to be arranged in the vehicle body more conveniently.

In some embodiments, one of the connectors 1 is a cradle. Along with new energy automobile's more and more popularization, also develop along with it for new energy automobile's equipment and facility that charges, rechargeable battery on the new energy automobile is owing to reach the requirement of filling soon, need use the charging seat assembly, the utility model discloses well one of them connector is the charging seat, connects the rifle that charges, and the connector of the other end is high voltage connector, connects rechargeable battery, realizes the purpose that charges for rechargeable battery.

The electric vehicle comprises the connector assembly with the liquid cooling function, the circulating pump 9 and the cooling device 10, and the first cavity 51 and the second cavity 61 are respectively communicated with the circulating pump 9 and the cooling device 10. Circulating pump 9 sends into first cavity 51 with coolant and cools off electricity connection skeleton 2, and coolant flows out from second cavity 61, and the coolant temperature at this moment is than higher, and after getting into cooling system, coolant's temperature decline is sent into the cooling cavity by circulating pump 9 again, forms a complete cooling cycle.

Further, the inlet pipe 83 is communicated with a liquid inlet of the circulation pump 9, a liquid outlet of the circulation pump 9 is communicated with a liquid inlet of the cooling device 10, and a liquid outlet of the cooling device 10 is communicated with the outlet pipe 84.

Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The utility model provides a connector assembly with liquid cooling function, including at least one electricity connect the skeleton and with the connector that the skeleton both ends are connected is connected to the electricity, its characterized in that, the periphery of electricity connection skeleton cup joints first sleeve pipe and second sleeve pipe in proper order, the outer wall of electricity connection skeleton with form first cavity between the first sheathed tube inner wall, first sheathed tube outer wall with form the second cavity between the second sheathed tube inner wall, first cavity with circulate the coolant liquid in the second cavity.

2. The liquid-cooled connector assembly as recited in claim 1, wherein the connector includes a connecting terminal, and the electrical connecting frame is electrically connected to the connecting terminal by soldering or pressing.

3. The liquid-cooled connector assembly as recited in claim 1, wherein the coolant is an insulating material.

4. The liquid-cooled connector assembly of claim 1, wherein the electrical connection backbone is formed from a rigid solid conductor material.

5. The liquid-cooled connector assembly of claim 1, wherein the electrical connection backbone is partially flexible.

6. The liquid-cooled connector assembly of claim 1, wherein the electrical connection backbone comprises at least one bend.

7. The liquid-cooled connector assembly of claim 1, wherein the cross-sectional shape of the electrical connection backbone is a polygon, and the corners of the polygon are all chamfered or rounded.

8. The liquid-cooled connector assembly of claim 1, wherein the cross-sectional shape of the electrical connection frame is one or more of circular, oval, rectangular, polygonal, A-shaped, B-shaped, D-shaped, M-shaped, N-shaped, O-shaped, P-shaped, S-shaped, E-shaped, F-shaped, H-shaped, K-shaped, L-shaped, T-shaped, U-shaped, V-shaped, W-shaped, X-shaped, Y-shaped, Z-shaped, semi-arc-shaped, and wave-shaped.

9. The liquid-cooled connector assembly of claim 1, wherein the cross-sectional area of the electrical connection backbone is 1.5mm ² -240mm ² 。

10. The liquid-cooled connector assembly of claim 1, wherein the first sleeve and the second sleeve are made of a rigid material.

11. The liquid-cooled connector assembly as recited in claim 10, wherein one of the first sleeve and the second sleeve is made of a conductive metal or a conductive plastic.

12. The liquid-cooled connector assembly as recited in claim 1, wherein the connector further comprises an inner shielding shell, and the inner shielding shell is made of a conductive metal or a conductive plastic.

13. The liquid-cooled connector assembly of claim 11 or 12, wherein the conductive metal or the conductive plastic has a transfer resistance of less than 100m Ω.

14. The liquid-cooled connector assembly as recited in claim 12, wherein the second sleeve is made of a conductive metal or a conductive plastic, and the second sleeve is electrically connected to the shielding inner housing by crimping or welding.

15. The liquid-cooled connector assembly of claim 12, wherein an impedance between the second sleeve and the shielded inner housing is less than 80m Ω.

16. The connector assembly with liquid cooling function of claim 12, wherein the first sleeve is made of conductive metal or conductive plastic, a shielding device is sleeved outside the end of the first sleeve, and the first sleeve is electrically connected to the shielding inner shell through the shielding device.

17. The liquid-cooled connector assembly of claim 16, wherein the shielding means includes at least one first through hole in an axial direction of the electrical connection backbone.

18. The liquid-cooled connector assembly of claim 17, wherein the sum of the cross-sectional areas of the first through-holes is between 5% and 90% of the cross-sectional area of the shield.

19. The connector assembly with liquid cooling capability of claim 1, wherein at least a first support ring is disposed within the first cavity, an inner wall of the first support ring is in contact with an outer periphery of the electrical connection frame, and an outer wall of the first support ring is in contact with an inner wall of the first sleeve.

20. The liquid-cooled connector assembly of claim 19, wherein the first support ring defines at least one second through hole in an axial direction of the electrical connection frame.

21. The liquid-cooled connector assembly of claim 20, wherein the sum of the cross-sectional areas of the second through-holes is between 5% and 90% of the cross-sectional area of the first cavity.

22. The liquid-cooled connector assembly as recited in claim 1, wherein at least a second support ring is disposed within the second chamber, an inner wall of the second support ring contacting an outer periphery of the first sleeve, and an outer wall of the second support ring contacting an inner wall of the second sleeve.

23. The liquid-cooled connector assembly of claim 22, wherein the second support ring has at least one third through hole in an axial direction of the electrical connection backbone.

24. The liquid-cooled connector assembly of claim 23, wherein the sum of the cross-sectional areas of the third through-holes is between 5% and 90% of the cross-sectional area of the second chamber.

25. The liquid-cooled connector assembly as recited in claim 1, wherein at least one first support ring is disposed inside the first cavity, at least one second support ring is disposed inside the second cavity, the electrical connection frame, the first sleeve and the second sleeve have a curved portion, and the first support ring and the second support ring are disposed at least at two ends and at a middle position of the curved portion.

26. The liquid-cooled connector assembly of claim 1, wherein the first sleeve and the second sleeve each have a thickness of 0.1% -20% of the outer diameter of the electrical connection backbone.

27. The liquid-cooled connector assembly of claim 1, wherein the difference in cross-sectional area between the first cavity and the second cavity is no more than 20%.

28. The connector assembly with liquid cooling function of claim 1, wherein the connector comprises a first connector and a second connector connected to two ends of the electrical connection frame, a rotary cavity is arranged in the first connector, and the rotary cavity is communicated with the first cavity and the second cavity; the inside switching cavity that sets up of second connector, the switching cavity with first cavity intercommunication, set up the intercommunication on the second sleeve pipe the induction pipe of second cavity, the induction pipe passes second connector outer wall and stretch out to the second connector outside, the second connector outside sets up the intercommunication the contact tube of switching cavity.

29. The liquid-cooled connector assembly of claim 1, wherein an end of the second cavity is sealed.

30. The connector assembly with liquid cooling function of claim 1, wherein the connector comprises a first connector and a second connector connected to two ends of the electrical connection frame, a rotary cavity is arranged inside the first connector, and the rotary cavity is communicated with the first cavity and the second cavity; the second connector is internally provided with a switching cavity, the switching cavity is communicated with the second cavity, the first sleeve is provided with an inlet pipe communicated with the first cavity, the inlet pipe penetrates through the side wall of the second sleeve and the outer wall of the second connector and extends out of the outer side of the second connector, and the outer side of the second connector is provided with an outlet pipe communicated with the switching cavity.

31. The liquid cooled connector assembly of claim 30, wherein an end of the first chamber body is sealingly disposed.

32. The liquid-cooled connector assembly of claim 28, wherein a first seal is provided between the inlet and outlet tubes and the second connector.

33. The liquid-cooled connector assembly as recited in claim 1, wherein a second seal is disposed between the connector and the second sleeve.

34. The liquid-cooled connector assembly of claim 1, wherein the coolant has a boiling point of 100 ℃ or higher.

35. The liquid-cooled connector assembly of claim 1, wherein the cooling liquid cools the electrical connection backbone at a rate of 0.04K/s to 5K/s.

36. The liquid-cooled connector assembly of claim 1, wherein one of said connectors is a charging dock.

37. A vehicle comprising the liquid-cooled connector assembly of any one of claims 1-36, a circulation pump, and a cooling device, wherein the first or second cavity is in communication with the circulation pump and the cooling device, respectively.

38. The vehicle of claim 37, wherein the connector comprises a first connector and a second connector connected to two ends of the electrical connection framework, a rotary cavity is arranged inside the first connector, and the rotary cavity is communicated with the first cavity and the second cavity; the inside switching cavity that sets up of second connector, the switching cavity with second cavity intercommunication, set up the intercommunication on the first sleeve pipe the induction pipe of first cavity, the induction pipe passes second sleeve pipe lateral wall and second connector outer wall stretches out the second connector outside, the second connector outside sets up the intercommunication the contact tube of switching cavity, the induction pipe with the inlet intercommunication of circulating pump, the liquid outlet of circulating pump with cooling device's inlet intercommunication, cooling device's liquid outlet with the contact tube intercommunication.