CN217823619U - Connector assembly with solid cooling medium and vehicle - Google Patents
Connector assembly with solid cooling medium and vehicle Download PDFInfo
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- CN217823619U CN217823619U CN202220548055.6U CN202220548055U CN217823619U CN 217823619 U CN217823619 U CN 217823619U CN 202220548055 U CN202220548055 U CN 202220548055U CN 217823619 U CN217823619 U CN 217823619U
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Abstract
The utility model discloses a connector assembly and vehicle with solid-state cooling medium, connector assembly include an at least electricity connection skeleton and connector, include connecting terminal in the connector, electricity connection skeleton both ends are connected with connecting terminal electricity respectively, electricity connection skeleton has the cavity inner chamber, the protective housing that has shielding efficiency is cup jointed to electricity connection skeleton periphery, electricity connection skeleton periphery with form the cavity between the protective housing inner wall that has shielding efficiency, the cavity inner chamber with solid-state or semi-solid-state cooling medium is filled to at least part in the 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, improve whole car security, play shielding electromagnetic interference's effect simultaneously.
Description
Technical Field
The utility model relates to an automotive electrical apparatus technical field, more specifically relates to a connector assembly and a vehicle with solid-state cooling medium.
Background
With the increasing popularization of new energy automobiles, equipment and facilities for transmitting electric energy for the new energy automobiles are developed, the connector assemblies on the new energy automobiles have large transmission current due to the requirement of high-power motors, the diameters of high-voltage cables on the connector assemblies are increased, the high-voltage cables can be assembled on automobile bodies only by hand, and the labor cost and the time cost are wasted.
In addition, in the normal use process, the high-voltage cable can flow through very large current, so that the high-voltage cable and the connecting joint can generate a large amount of heat, and the high temperature can be caused due to the excessive heat, and the connecting position of the high-voltage cable and the surrounding connecting pieces and fixing pieces can be failed due to the high temperature, so that the normal use of the connector assembly is influenced, short circuit and open circuit are generated, even electric shock hazard is generated, and the life is threatened.
High-voltage cable is because the electric current is great, can produce very strong electromagnetic interference, and in order to reduce electromagnetic interference's influence, high-voltage 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 work out, need increase the shielding braider in cable production facility, and equipment price is high, and area is big, leads to the shielding cable price of connector to be high at all. 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 new technical scheme of connector assembly and vehicle with solid-state cooling medium. The utility model discloses a connector assembly with solid-state cooling medium can reduce the electricity and connect skeleton and connecting terminal and produce the inefficacy that high temperature leads to because of circular telegram, 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 a first aspect of the present invention, there is provided a connector assembly with a solid state cooling medium, comprising: skeleton and connector are connected to an at least electricity, include connecting terminal in the connector, it is connected with connecting terminal electricity respectively to connect the skeleton both ends to connect the skeleton, it has the cavity inner chamber to connect the skeleton electricity, it cup joints the protective housing that has shielding efficiency to connect the skeleton periphery electricity, connect the skeleton periphery electricity with form the cavity between the protective housing inner wall that has shielding efficiency, the cavity inner chamber with at least part fills solid-state or semi-solid state coolant medium in the cavity.
Optionally, the material of the electrical connection framework comprises a rigid hollow conductor material.
Optionally, the annular cross-sectional area of the electrical connection skeleton is 0.33mm 2 -240mm 2 。
Optionally, the electrical connection framework is electrically connected with the connection terminal by welding or crimping.
Optionally, the protective shell material includes a rigid conductive material.
Optionally, the protective shell is made of metal or conductive plastic.
Optionally, the connector further comprises a shielding inner shell inside, and the material of the shielding inner shell contains a conductive material.
Optionally, the material of the shielding inner shell includes metal or conductive plastic.
Optionally, the conductive plastic is a polymer material containing conductive particles, and the conductive particle material contains one of metal, conductive ceramic, a carbon-containing conductor, a solid electrolyte, and a 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, chloroprene rubber, butyl rubber, fluorine rubber, polyurethane rubber, polyacrylate rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, chlorinated polyethylene rubber, chlorosulfonated sulfur rubber, styrene butadiene rubber, hydrogenated rubber, polysulfide rubber, crosslinked polyethylene, polycarbonate, polysulfone, polyphenylene oxide, polyester, phenolic resin, urea formaldehyde, styrene-acrylonitrile copolymer, polymethacrylate, and resin.
Optionally, the material of the metal contains one or more 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 powder, carbon nanotube material, graphene material, graphite silver, or graphene silver.
Optionally, the protective shell is electrically connected with the shielding inner shell by means of crimping or welding.
Optionally, an impedance between the protective case and the shielding inner case is less than 80m Ω.
Optionally, the transfer impedance of the protective case is less than 100m Ω.
Optionally, a transfer impedance of the shielding inner case is less than 100m Ω.
Optionally, the thickness of the protective shell is 1% -15% of the outer diameter of the protective shell.
Optionally, the outer diameter of the cavity is 1.02 times to 1.3 times of the outer diameter of the electrical connection skeleton.
Optionally, the cooling rate of the cooling medium to the electrical connection skeleton is 0.04K/s-9.8K/s.
Optionally, the cooling medium is a heat conduction adhesive tape, a heat conduction insulating elastic rubber, a flexible heat conduction pad, a heat conduction filler and a heat conduction insulating potting adhesive.
Optionally, the cooling medium is disposed on the periphery of the electrical connection framework by injection molding, extrusion molding, dipping, foaming, winding, weaving, pouring, filling or wrapping.
Optionally, the cooling medium comprises one of quartz glass, silicon carbide, mica, sand, diamond, silicon, graphene and derivatives or silicone grease.
Optionally, the volume of the cooling medium in the hollow inner cavity is greater than 1.1% of the volume of the hollow inner cavity.
Optionally, the volume of the cooling medium in the cavity is greater than 1.1% of the volume of the cavity.
Optionally, the cooling medium is distributed in an uneven state in the hollow inner cavity or the cavity.
Optionally, one of the connectors is a cradle.
Optionally, a partial region of the electrical connection skeleton is flexible.
Optionally, the electrical connection skeleton includes at least one bending part.
Optionally, the cross section of the electrical connection framework is in one or more of a circle, an ellipse, a rectangle, a polygon, an A shape, a B shape, a D shape, an M shape, a P shape, an N shape, an O shape, an S shape, an E shape, an F shape, an H shape, a K shape, an L shape, a T shape, a U shape, a V shape, a W shape, an X shape, a Y shape, a Z shape, a P shape, a semi-arc shape, an arc shape and a wave shape.
According to a second aspect of the present invention, there is provided a vehicle comprising a connector assembly with a solid cooling medium as described in any of the above embodiments.
The utility model has the advantages that:
1. the utility model discloses a connector assembly with solid-state cooling medium 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.
2. The form of adopting the outer cover of electricity connection skeleton to connect the protective housing, the protective housing both had played the effect of constructing the cavity, can play the effect of shielding layer again, and the electromagnetic interference that the skeleton circular telegram produced is connected in effectual shielding electricity.
3. The problem that the wire diameter of the existing high-voltage wire harness is thick is solved, the technology of adding the solid cooling medium is used, the heat productivity of the electric connection framework is reduced, and the electric connection framework can conduct large current with small wire diameter.
4. 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 high-pressure pencil.
5. 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 solid-state coolant is direct, can reduce the temperature of electricity connection skeleton rapidly, realizes that the heavy current switches on.
6. 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.
7. The connector is internally provided with the shielding inner shell, 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 integral injection molding mode, processing time is saved, production efficiency is improved, and production cost is reduced.
8. 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.
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 diagram of a connector assembly with a solid cooling medium according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the connection between the electrical connection skeleton of the connector assembly with solid cooling medium and the second connector according to the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram illustrating a connection between an electrical connection frame and a second connector of a connector assembly with a solid cooling medium according to a second embodiment of the present invention.
Fig. 4 is a cross-sectional view of an electrical connection backbone of a connector assembly having a solid state cooling medium in accordance with a preferred embodiment of the present invention.
The figures are labeled as follows:
11-a first connector, 12-a second connector, 2-an electric connection framework, 3-a hollow inner cavity, 4-a shielding inner shell, 5-a protective shell, 6-a cavity, 7-a connecting terminal and 8-a sealing ring.
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 the components and steps, the 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 those 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.
As shown in fig. 1 to 4, a connector assembly with a solid cooling medium includes at least one electrical connection frame 2 and a connector (as shown in fig. 1, may include a first connector 11 and a second connector 12), the connector includes a connection terminal 7, two ends of the electrical connection frame 2 are respectively electrically connected with the connection terminal 7, the electrical connection frame 2 has a hollow inner cavity 3, a protective shell 5 with shielding effectiveness is sleeved on the periphery of the electrical connection frame 2, a cavity 6 is formed between an outer wall of the electrical connection frame 2 and an inner wall of the protective shell 5, and at least part of the hollow inner cavity 3 and the cavity 6 is filled with a solid or semi-solid cooling medium.
Preferably, the cooling medium is disposed on the periphery of the electrical connection frame 2 by injection molding, extrusion molding, dip molding, foaming, winding, weaving, pouring, filling or wrapping.
The injection molding process is a process for manufacturing a semi-finished product with a certain shape by pressurizing, injecting, cooling, separating and the like molten raw materials.
Extrusion molding is a high-efficiency, continuous and low-cost molding processing method, is an early technology in the processing of high polymer materials, and is a molding processing method with the most production varieties, the most changes, high production rate, strong adaptability, wide application and the largest proportion occupied by yield in the polymer processing field.
The plastic dipping process is a process that after a workpiece is electrically heated, the workpiece reaches a certain temperature and is dipped into plastic dipping liquid, and the plastic dipping liquid is solidified on the workpiece.
The foaming process is that a honeycomb or cellular structure is formed by adding and reacting a physical foaming agent or a chemical foaming agent in a foaming forming process or a foaming polymer material. The basic steps of foam molding are the formation of a bubble nucleus, the growth or enlargement of the bubble nucleus, and the stabilization of the bubble nucleus. At a given temperature and pressure, the solubility of the gas decreases so that saturation is reached, allowing excess gas to escape and form bubbles, thereby effecting nucleation.
The winding is to directly wind the heat conduction adhesive tape on the periphery of the electric connection framework 2.
The weaving is to weave a plurality of strip-shaped cooling mediums in a staggered or hooked mode, and the cooling mediums are filled between the electric connection framework 2 and the protective shell 5.
The pouring is to pour the unformed cooling medium between the electrical connection framework 2 and the protective shell 5 and wait for solidification and forming.
The wrapping is that the heat conduction adhesive tape is integrally wrapped on the periphery of the electric connection framework 2.
The filling is to arrange a filling cavity at the periphery of the electric connection framework 2 and then fill the cooling medium into the filling cavity.
Preferably, the cooling medium comprises one or more of quartz glass, silicon carbide, mica, sand, diamond, silicon, graphene, and derivatives or silicone grease. The type of cooling medium can be selected according to actual needs.
Quartz glass is made by melting various pure natural quartz (such as crystal, quartz sand, etc.).
The silicon carbide is an inorganic substance, has a chemical formula of SiC, and is prepared by smelting quartz sand, petroleum coke (or coal coke), wood chips (salt is required when green silicon carbide is produced) and other raw materials in a resistance furnace at high temperature.
Mica is a rock-making mineral, presents a hexagonal flaky crystal form, and is one of the main rock-making minerals.
Sand, which refers to a loose mixture of sand and gravel.
Diamond is a mineral composed of carbon elements and is the hardest naturally occurring substance in nature. Graphite can be formed into synthetic diamonds at high temperature and high pressure.
Silicon exists mainly in the form of oxides and silicates with very high melting points. And is also a material for semiconductors.
The graphene is sp 2 The hybridized and connected carbon atoms are tightly packed into a new material with a single-layer two-dimensional honeycomb lattice structure.
The silicone grease is refined by taking silicone oil as a thickening inorganic thickening agent of base oil, and has good waterproof sealing property, waterproof property, solvent resistance and creepage resistance.
At present, cables on most connector assemblies are multi-core copper cables, so that the multi-core copper 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 cable is too thick in diameter and large in weight, the cable can frequently rub against 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 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 is avoided, the service life of the connector assembly is prolonged, and the accident rate is reduced. When the automobile charges, the current of the electric connection skeleton of flowing through is very big, and the temperature of the electric connection skeleton rises fast, and the cavity 6 and the hollow inner cavity 3 between the protective housing and the electric connection skeleton that have shielding effectiveness are filled with solid or semi-solid cooling medium and are used for cooling the electric connection skeleton 2, thereby cooling the electric connection skeleton 2 that generates heat and enabling the connector assembly to work at safe temperature.
In some embodiments, the material of the electrical connection frame 2 comprises a rigid hollow conductor material. Thereby, the hollow cavity 3 described above is formed. Furthermore, in order to reduce the heat generation of the electrical connection frame 2, the hollow interior 3 is also at least partially filled with a solid or semi-solid cooling medium.
In some embodiments, the volume of cooling medium in the hollow interior 3 is greater than 1.1% of the volume of the hollow interior 3. In order to verify the influence of the volume of the cooling medium on the temperature rise of the electrically-connected frameworks 2, the inventor selects 10 electrically-connected frameworks 2 with the same cross section area, the same material and the same length, applies the same current, adopts cooling media with different volumes to cool the electrically-connected frameworks 2, reads the temperature rise value of each electrically-connected framework 2, and records the temperature rise value in table 1.
The experimental method is that in a closed environment, the same current is conducted by adopting the electric connection frameworks 2 of cooling media with different volumes, the temperature before electrifying and the temperature after electrifying are stable are recorded, and an absolute value is obtained by taking the difference. In this embodiment, a temperature rise of less than 50K is a qualified value.
Table 1: influence of cooling media of different volumes on temperature rise of electrical connection framework 2
As can be seen from table 1 above, when the volume fraction is less than 1.1%, the temperature rise value of the electrically connecting bobbin 2 is not good. Accordingly, the inventors set up to: the volume of the cooling medium in the hollow cavity 3 is more than 1.1% of the volume of the hollow cavity 3.
In some embodiments, the volume of cooling medium in the cavity 6 is greater than 1.1% of the volume of the cavity 6. In order to verify the influence of the volume of the cooling medium on the temperature rise of the electrically-connected framework 2, the inventor adopts the verification process that the volume of the cooling medium in the hollow inner cavity accounts for the volume percentage of the hollow inner cavity, and for the sake of brevity, the description is omitted.
In some embodiments, the cooling medium is distributed in an uneven state in the hollow interior 3. In the vehicle body space, the heating values of different positions are inconsistent, and the positions needing better heat dissipation effect are filled with more cooling media between the outer wall of the electric connection framework 2 and the inner wall of the protective shell, when the electric connection framework 2 is in a bending state, the heating value of the bending position is larger, more cooling media need to be filled, when the straight line part of the electric connection framework is in an electric connection, the heating value is very small, less cooling media can be filled, even the filling is not carried out, the weight of the connector assembly is reduced, the using amount of the cooling media is reduced, and the cost is saved.
In some embodiments, a partial region 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. Meanwhile, the flexible body can absorb the vibration of the electric connection framework 2, so that the vibration of the electric connection framework 2 does not influence the connector and other corresponding electric devices on the vehicle body.
In some embodiments, the electrical connection skeleton 2 comprises at least one bent portion to meet the requirement of mounting the electrical connection skeleton 2 on the vehicle body.
In some embodiments, the cross-sectional shape of the electrical connection backbone 2 is one or more of circular, oval, rectangular, polygonal, A-shaped, B-shaped, D-shaped, M-shaped, P-shaped, N-shaped, O-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, P-shaped, semi-arc-shaped, and wave-shaped. The electric connection framework 2 with different cross sections can be selected according to actual requirements.
In some embodiments, the annular cross-sectional area of the electrical connection backbone 2 is 0.33mm 2 -240mm 2 . The cross-sectional area of the electrically connecting frame 2 determines the current that the electrically connecting frame 2 can conduct, and generally, the electrically connecting frame 2 for realizing signal conduction has smaller current and smaller cross-sectional area of the electrically connecting frame 2, for example, the minimum cross-sectional area of the electrically connecting frame 2 for transmitting signals can reach 0.33mm 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 a conductor of a wire harness of an automobile storage battery reaches 240mm 2 。
In some embodiments, the connector further comprises a shielding inner housing 4, and the material of the shielding inner housing 4 comprises a conductive material. Further, in some embodiments, the material of the shielding inner case 4 includes metal or 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 be injection molded, and a user can select the shielding inner shell 4 made of a proper material according to needs. 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 cable production equipment, the equipment price is high, the occupied area is large, and the price of the shielding cable of the connector is high. The shielding inner shell 4 made of conductive material is electrically connected with the protective shell 5 with shielding effect to form a complete shielding device. The shielding layer can play a role in effectively shielding electromagnetic interference generated by electrifying the electric connection framework 2, the use of a shielding net is saved, and the cost of the connector assembly is reduced. Preferably, a sealing ring 8 may be provided between the inner shielding shell 4 and the protective shell 5 to ensure that the cooling medium does not overflow the connector and the electrical connection backbone 2.
In some embodiments, the material of the protective shell 5 comprises a rigid conductive material. Therefore, the cable can be fixed on the automobile shell, the friction between the cable and the automobile shell along with the vibration of an automobile is avoided, the service life of the connector assembly is prolonged, and the accident rate is reduced.
In some embodiments, the material of the protective shell 5 includes conductive metal or conductive plastic. The conductive plastic is conductive plastic or conductive rubber containing metal particles. The benefit of adopting electrically conductive plastic is that can make things convenient for injection moulding, and the user can select the protective housing 5 of suitable material as required.
Because the electric connection framework 2 conducts large current, and the protective shell 5 with shielding effect needs to be connected with electricity in order to achieve the shielding effect, the electric connection framework 2 and the protective shell 5 with shielding effect cannot be electrically connected, otherwise, short circuit can be caused. The solid or semi-solid cooling medium filled in the cavity 6 between the electrical connection backbone 2 and the protective casing 5 with shielding effectiveness must be insulated.
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 polyformaldehyde resin. The conductive plastics containing different particles can be selected according to requirements.
Furthermore, the material of the metal contains one or more 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 shielding inner shell 4, the inventor performed an experiment to manufacture a sample of the shielding inner shell 4 using metal particles with the same specification and size and different materials, and respectively test the conductivity of the shielding inner shell 4, where the experimental result is shown in table 2 below, and in this embodiment, the conductivity of the shielding inner 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 contain one of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, and beryllium.
Further, the carbon-containing conductor contains one or more of graphite powder, carbon nanotube material, graphene material, graphite silver or graphene silver. 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 has good electric property because the structure of the carbon nano tube is the same as the lamellar structure of the graphite. The graphene, the graphite silver and the graphene silver have 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 on the electric connection framework 2.
In some embodiments, the material of the connection terminal 7 includes copper or copper alloy, the material of the electrical connection frame 2 includes aluminum or aluminum alloy, and the electrical connection frame 2 is electrically connected to the connection terminal 7 by welding or pressing.
Copper or copper alloy electric conductivity is high to antifriction, and the material of the electric part that connects of most power consumption devices at present all is copper, consequently needs to use material to carry out plug connection for connecting terminal 7 that is copper or copper alloy, and connecting terminal 7 can be widely used in various electricity transmission scenes.
The electric connection framework 2 made of aluminum or aluminum alloy has the advantages of good rigidity, light weight and high transmission efficiency, and is particularly suitable for large current transmission.
The connecting terminal 7 and the electric connection framework 2 are connected through welding, the adopted welding mode comprises one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding and magnetic induction welding, concentrated heat energy or pressure is adopted, the contact position of the connecting terminal 7 and the electric connection framework 2 is in fusion connection, and the welding mode is stable in connection.
In addition, the metal inertia of copper is greater 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 due to the fact that contact positions are 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 high-frequency vibration waves are 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 the 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 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 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.
The crimping mode is a production process that after the electric connection framework 2 and the connecting terminal 7 are assembled, the two are punched and pressed 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.
In some embodiments, the protective shell 5 is electrically connected to the shield inner shell 4 by crimping or welding. The aluminum or aluminum alloy material has good conductivity, light weight and low price. The shielding inner shell 4 is made of aluminum or aluminum alloy, so that a good shielding effect can be achieved, and the connection terminal 7 and the electromagnetic radiation of the electric connection framework 2 are prevented from affecting other equipment.
The crimping is a production process of assembling the shielding inner shell 4 and the shielding inner shell 5 and then punching the shielding inner shell and the shielding inner shell 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 or crimping method is substantially the same as the welding method of the connection terminal 7 and the electrical connection frame 2, and is not described again.
In some embodiments, the transfer impedance of the protective shell 5 is less than 100m Ω. The shielding material generally represents the shielding effect of the protective shell 5 by the transfer impedance, and the smaller the transfer impedance, the better the shielding effect. The transfer impedance of the protective shell 5 Is defined as the ratio of the differential mode voltage U induced by the shield per unit length to the current Is passing through the surface of the shield, i.e.:
Z T ＝U/I S it can therefore be understood that the transferred impedance of the protective shell 5 converts the protective shell 5 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 protective cases 5 with different transfer impedance values on the shielding effect, the inventor selects the electrical connection framework 2, the connector and the connection terminal 7 with the same specification, and adopts the protective cases 5 with different transfer impedance values to manufacture a series of samples, and respectively tests the shielding effect, and the experimental result is shown in the following table 3, in this embodiment, the shielding performance value greater than 40dB 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 3: influence of transfer impedance of protective case 5 on shielding performance
As can be seen from table 3 above, when the transfer resistance value of the protective case 5 is greater than 100m Ω, the shielding performance value of the protective case 5 is less than 40dB, which is not satisfactory for the ideal value, and when the transfer resistance value of the protective case 5 is less than 100m Ω, the shielding performance value of the protective case 5 is all satisfactory for the ideal value, and the trend is better and better, so the inventors set the transfer resistance of the protective case 5 to be less than 100m Ω.
In some embodiments, the transfer impedance of the shield inner housing 4 is less than 100m Ω. 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 and the connection terminal 7 with the same specification, adopts the shielding inner shells 4 with different transfer impedance values, manufactures a series of samples, respectively tests the shielding effect, and the experimental result is shown in the following table 4, wherein in the 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 testing instrument outputs a signal value (the value is a testing value 2) to the electric connection framework 2, and a detecting device is arranged on the outer side of the shielding inner shell 4 and detects a signal value (the value is a testing value 1). Shielding performance value = test value 2-test value 1.
Table 4: influence of the transfer impedance of the shielded inner housing 4 on the shielding performance
As can be seen from table 4 above, when the transfer resistance value of the shield inner case 4 is larger than 100m Ω, the shield performance value of the shield inner case 4 is smaller than 40dB, which is not in accordance with the ideal value requirement, and when the transfer resistance value of the shield inner case 4 is smaller than 100m Ω, the shield performance values of the shield inner case 4 are all in accordance with the ideal value requirement, and the trend is getting better, and therefore, the inventors set the transfer resistance of the shield inner case 4 to be smaller than 100m Ω.
In some embodiments, the thickness of the protective shell 5 is 1% -15% of the outer diameter of the electrical connection backbone 2. If the thickness of the protective case 5 is too small, the electric conductivity is insufficient, and the shielding effect cannot be satisfied. If the thickness of the protective case 5 is too large, material is wasted to increase the weight of the vehicle body. In order to demonstrate the influence of the ratio of the different protective cases 5 occupying the outer diameter of the electrical connection framework 2 on the conductivity of the protective cases 5, the inventors manufactured samples of the protective cases 5 with different thicknesses and the same material, and tested the conductivity respectively, the experimental results are shown in table 5, and in this embodiment, the conductivity of the protective cases 5 is equal to or greater than 99% as an ideal value.
Table 5: the thickness of the different protective shells 5 accounts for the influence of the ratio of the outer diameter of the electric connection framework 2 on the electric conductivity
As can be seen from table 5, when the percentage of the protective shell 5 to the outer diameter of the electrical connection frame 2 is less than 1%, the electrical conductivity of the protective shell 5 is less than 99%, which is not qualified, and when the percentage of the protective shell 5 to the outer diameter of the electrical connection frame 2 is more than 15%, the electrical conductivity has not been significantly increased, the shielding effect is not further enhanced, and the thicker protective shell 5 increases the cost and the weight of the vehicle body, so the inventor prefers that the thickness of the protective shell 5 is 1% -15% of the outer diameter of the electrical connection frame 2.
In some embodiments, the outer diameter of the cavity 6 is 1.02 times to 1.3 times the outer diameter of the electrical connection backbone 2. The outer diameter of the cavity 6 is too small, the cooling efficiency is insufficient due to insufficient space for placing the cooling medium, in order to find the relation between the outer diameter of the cavity 6 and the outer diameter of the electric connection framework 2, the inventor conducts relevant tests, the test method is to select the same electric connection framework 2 and the cavities 6 with different outer diameters, fill the same cooling medium, measure the temperature rise after electrifying the electric connection framework 2, and the temperature rise is lower than 50K and is a qualified value. The results are shown in Table 6.
Table 6: the external diameter of the cavity 6 is compared with the external diameter of the electric connection framework 2 to influence the temperature rise of the electric connection framework
As can be seen from table 6 above, when the ratio of the outer diameter of the cavity 6 to the outer diameter of the electrically connecting frame 2 is less than 1.02, the temperature rise of the electrically connecting frame 2 is greater than 50K, which is not acceptable, and when the ratio of the outer diameter of the cavity 6 to the outer diameter of the electrically connecting frame 2 is greater than 1.3, the temperature rise of the electrically connecting frame 2 is not significantly changed, and the thicker cavity 6 increases the cost and the weight of the vehicle body, so the inventors prefer that the outer diameter of the cooling cavity 6 is 1.02 times to 1.3 times the outer diameter of the electrically connecting frame 2.
In some embodiments, the cooling medium cools the electrical connection backbone 2 at a rate of 0.04K/s to 9.8K/s. In order to verify the influence of the cooling rate of the cooling medium on the temperature rise of the electrically-connected frameworks 2, the inventors 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 with the cooling medium of different cooling rates, read the temperature rise values of the electrically-connected frameworks 2, and recorded them 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 media 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 media 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 medium 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 medium is, the smaller the temperature rise value of the electrically-connected bobbin 2 is. However, when the cooling rate of the cooling medium is more than 9.8K/s, the temperature rise of the electrically connecting frame 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 medium to 0.04K/s to 9.8K/s.
In some embodiments, the cooling medium is a thermally conductive adhesive tape, a thermally conductive insulating elastic rubber, a flexible thermally conductive pad, a thermally conductive filler, and a thermally conductive insulating potting adhesive. The connector assembly with the solid cooling medium can reduce the failure of the electric connection framework 2 and the connecting terminal 7 caused by high temperature generated by electrifying, reduce the diameter of the electric connection framework 2, prolong the service life of the connector 1 and improve the safety of the whole vehicle.
The heat conduction adhesive tape takes high heat conduction rubber as a heat conduction base material, and one side or two sides of the heat conduction adhesive tape are back-provided with pressure-sensitive heat conduction adhesive, so that the bonding is reliable and the strength is high. The heat-conducting adhesive tape is thin in thickness, good in flexibility and very easy to attach to the surfaces of devices and radiators. The heat conduction adhesive tape can also adapt to the change of cold and hot temperatures, and the consistency and stability of the performance are ensured.
The heat-conducting insulating elastic rubber adopts a silicon rubber substrate, and ceramic particles such as boron nitride, aluminum oxide and the like are used as fillers, so that the heat-conducting effect is very good. The thermal impedance is lower than other heat conducting materials under the same condition. The glass fiber reinforced plastic has the characteristics of softness, cleanness, no pollution, no radioactivity and high insulativity, provides good mechanical property for glass fiber reinforcement, can prevent puncture, shear and tear, and can be provided with a heat-conducting pressure-sensitive back adhesive.
The flexible heat conducting pad is a heat conducting material with thickness, the base materials used at present are basically silicone rubber and foamed rubber, the silicone rubber is characterized by good elasticity, and the foamed rubber is characterized by large deformation range, good heat conducting effect and higher pressure-resistant grade.
The heat-conducting filler is a filler added in the base material to increase the heat conductivity coefficient of the material, and commonly used heat-conducting fillers comprise aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride, silicon carbide and the like.
The heat-conducting pouring sealant is an electronic adhesive prepared from main raw materials of silicon rubber, has excellent high-low temperature resistance, can keep elasticity within a temperature range of-60-200 ℃, can effectively increase the waterproof and anti-seismic functions of electronic equipment after pouring and sealing, and ensures the application reliability of the electronic equipment.
In some embodiments, the impedance between the protective shell 5 and the shielded inner shell 4 is less than 80m Ω.
The impedance between the protective shell 5 and the shielding inner shell 4 is as small as possible, so that the current generated by the shielding inner shell 4 flows back to the energy source or the ground position without obstruction, and if the impedance between the protective shell 5 and the shielding inner shell 4 is large, large current is generated between the protective shell 5 and the shielding inner shell 4, so that large radiation is generated at the cable connection.
In order to verify the influence of the impedance value between the protective shell 5 and the shielding inner shell 4 on the shielding effect, the inventor selects the electrical connection framework 2, the connector and the connection terminal 7 with the same specification, selects different impedances between the protective shell 5 and the shielding inner shell 4, manufactures a series of samples, and respectively tests the shielding effect, and the experimental result is shown in the following table 8, wherein in the 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 8: influence of impedance between the protective case 5 and the shield inner case 4 on the shielding performance
As can be seen from table 8, when the impedance value between the protective case 5 and the shield inner case 4 is greater than 80m Ω, the shielding performance value is less than 40dB, which is not satisfactory for the ideal value, and when the impedance value between the protective case 5 and the shield inner case 4 is less than 80m Ω, the shielding performance values are all satisfactory for the ideal value, and the trend is better and better, so the inventors set the impedance between the protective case 5 and the shield inner case 4 to be less than 80m Ω.
In some embodiments, one of the connectors 1 is a cradle. One connector is connected to each end of the electrical connection frame 2, and in some cases, one connector (e.g., the first connector 11) may be a charging seat, and the charging seat is charged by using a connector (e.g., the second connector 12) connected to the other end of the electrical connection frame 2.
The utility model also provides a vehicle, include as above the connector assembly that has solid-state cooling medium.
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 (19)
1. The utility model provides a connector assembly with solid-state cooling medium, includes that skeleton and connector are connected to an at least electricity, its characterized in that, include connecting terminal in the connector, it is connected with connecting terminal electricity respectively to connect the skeleton both ends, it has the cavity inner chamber to connect the skeleton periphery to connect, connect the skeleton periphery to connect and cup joint the protective housing that has shielding efficiency, connect the skeleton periphery with form the cavity between the protective housing inner wall that has shielding efficiency, the cavity inner chamber with at least part fills solid state or semi-solid state cooling medium in the cavity.
2. The connector assembly with solid cooling medium of claim 1, wherein the electrical connection backbone has an annular cross-sectional area of 0.33mm 2 -240mm 2 。
3. The connector assembly with solid state cooling medium of claim 1, wherein the electrical connection backbone is electrically connected to the connection terminals by soldering or crimping.
4. The connector assembly with solid cooling medium of claim 1, wherein the connector interior further comprises a shielding inner shell, and the protective shell is electrically connected with the shielding inner shell by means of crimping or welding.
5. The connector assembly with solid state cooling medium of claim 4, wherein the impedance between the protective shell and the shielded inner shell is less than 80m Ω.
6. The connector assembly with solid cooling medium of claim 1, wherein the protective shell has a transfer impedance of less than 100m Ω.
7. The connector assembly with solid cooling medium of claim 4, wherein the transfer impedance of the shielded inner housing is less than 100m Ω.
8. The connector assembly with solid state cooling medium of claim 1, wherein the protective shell has a thickness that is between 1% and 15% of an outer diameter of the protective shell.
9. The connector assembly with solid state cooling medium of claim 1, wherein the cavity has an outer diameter that is 1.02 times to 1.3 times an outer diameter of the electrical connection backbone.
10. The connector assembly with solid cooling medium of claim 1, wherein the cooling medium cools the electrical connection backbone at a rate of 0.04K/s to 9.8K/s.
11. The connector assembly with solid state cooling medium of claim 1, wherein the cooling medium is disposed on the periphery of the electrical connection backbone by injection molding, extrusion molding, dip molding, foaming, winding, weaving, potting, filling, or wrapping.
12. The connector assembly with solid state cooling medium of claim 1, wherein a volume of the cooling medium in the hollow interior is greater than 1.1% of a volume of the hollow interior.
13. The connector assembly with solid state cooling medium of claim 1, wherein a volume of the cooling medium in the cavity is greater than 1.1% of a volume of the cavity.
14. The connector assembly with solid cooling medium of claim 1, wherein the cooling medium is distributed unevenly in the hollow interior cavity or the cavity.
15. The connector assembly with solid state cooling medium of claim 1, wherein one of said connectors is a cradle.
16. The connector assembly with solid state cooling medium of claim 1, wherein a portion of the electrical connection backbone is flexible.
17. The connector assembly with solid state cooling medium of claim 1, wherein the electrical connection backbone comprises at least one bend.
18. The connector assembly with solid cooling medium of claim 1, wherein the cross-sectional shape of the electrical connection backbone is one or more of circular, oval, rectangular, A-shaped, B-shaped, D-shaped, M-shaped, P-shaped, N-shaped, O-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.
19. A vehicle comprising a connector assembly with a solid cooling medium according to any one of claims 1-18.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174245A1 (en) * | 2022-03-14 | 2023-09-21 | 长春捷翼汽车科技股份有限公司 | Connector assembly having liquid cooling function, and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023174245A1 (en) * | 2022-03-14 | 2023-09-21 | 长春捷翼汽车科技股份有限公司 | Connector assembly having liquid cooling function, and vehicle |
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