CN217823622U - Connector assembly with solid cooling medium and vehicle - Google Patents
Connector assembly with solid cooling medium and vehicle Download PDFInfo
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- CN217823622U CN217823622U CN202220552577.3U CN202220552577U CN217823622U CN 217823622 U CN217823622 U CN 217823622U CN 202220552577 U CN202220552577 U CN 202220552577U CN 217823622 U CN217823622 U CN 217823622U
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Abstract
The utility model discloses a connector assembly and vehicle with solid-state cooling medium, connector assembly include that skeleton and connector are connected to an at least electricity, include connecting terminal in the connector, the electricity is connected the skeleton both ends and is connected with connecting terminal electricity respectively, the electricity is connected the skeleton and is had at least one cavity inner chamber, at least part fills solid-state or semi-solid state cooling medium in the cavity inner chamber. 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.
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 fact that the requirements of high-power motors are met, the diameters of high-voltage cables on the connector assemblies are increased, the connectors can be assembled on automobile bodies only by hand, and labor cost and 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, high temperature can be caused due to excessive heat, the connecting position of the high-voltage cable and peripheral connecting pieces and fixing pieces can be out of work due to high temperature, 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 can produce very strong electromagnetic interference because the electric current is great, 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 current commonly used adopts the wire to compile and forms, need increase the shielding braider in cable production facility, and equipment price is high, and area is big, and the shielding cable price that leads to the connector is 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 to produce the inefficacy that high temperature leads to because of circular telegram, improves whole car security.
According to the utility model discloses a first aspect provides a connector assembly with solid-state cooling medium, connect skeleton and connector including 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 at least one cavity inner chamber to connect the skeleton, at least part fills solid-state or semi-solid state cooling medium in the cavity inner chamber.
Optionally, the material of the electrical connection framework comprises a rigid hollow conductor material.
Optionally, the electrical connection framework is electrically connected with the connection terminal by welding or crimping.
Optionally, the cross section of the outer contour 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, an N shape, an O shape, a P 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 semi-arc shape, an arc shape and a wave shape.
Optionally, when the electrical connection skeleton has a hollow inner cavity, the wall thickness of the hollow conductor material is uniform.
Optionally, the cross-sectional area of the hollow conductor material is 0.3mm 2 -240mm 2 。
Optionally, the sum of the cross-sectional areas of the hollow inner cavities accounts for 3.7% -85% of the cross-sectional area of the circumscribed circle of the electrical connection framework.
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 a conductive metal or a 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 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 powder, carbon nanotube material, graphene material, graphite silver, or graphene silver.
Optionally, the transfer impedance of the shielding inner housing is less than 100m Ω.
Optionally, an insulating layer is sleeved on the outer periphery of the electrical connection framework.
Optionally, an insulating layer is sleeved on the periphery of the electrical connection framework, and a shielding layer and an outer insulating layer are further sleeved on the periphery of the insulating layer.
Optionally, the shielding layer is electrically connected with the shielding inner shell.
Optionally, the cooling rate of the cooling medium to the electrical connection framework is 0.05K/s-10.3K/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 molding, foaming, winding, weaving, pouring 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 cooling medium is distributed in an uneven state in the hollow inner 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.
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 shielding layer is sleeved outside the electric connection framework, so that the shielding layer plays a role in constructing a cavity and also plays a role in shielding, and electromagnetic interference generated by electrifying the electric connection framework is effectively shielded.
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 present liquid cooling pencil cooling efficiency is low is solved, and 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 direct and electricity of solid-state cooling medium, 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, 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.
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 view of a connector assembly with solid cooling medium according to the present invention.
Fig. 2 is a schematic cross-sectional view of an electrical connection frame according to a first embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of an electrical connection frame according to a second embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of an electrical connection frame according to a third embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of an electrical connection frame according to a fourth embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the connection between the electrical connection frame and the first connector and the second connector of the connector assembly with solid cooling medium according to 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 shielding layer, 14-an insulating layer, 7-a connecting terminal and 13-an outer insulating layer.
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 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 exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
A connector assembly with solid cooling medium is disclosed in fig. 1 to 6, and comprises at least one electric connection framework 2 and a connector, wherein the connector comprises a connection terminal 7, two ends of the electric connection framework 2 are respectively electrically connected with the connection terminal 7, the electric connection framework 2 is provided with at least one hollow inner cavity 3, and the hollow inner cavity 3 is at least partially filled with solid or semi-solid cooling medium. In a particular embodiment, a connector assembly with a solid cooling medium may include two electrical connection backbones 2. Correspondingly, the connector may comprise a first connector 11 and a second connector 12. The first connector 11 and the second connector 12 both include a connection terminal 7, and both ends of each electrical connection frame 2 are electrically connected to the connection terminals 7 respectively. In some embodiments, one of the connectors 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.
At present, multi-core copper cables are used for high-voltage cables on most connector assemblies, so that the high-voltage 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.
Aluminum is inferior to copper in conductivity, and aluminum is one of the main materials to replace copper cables because of its large storage capacity and low price. Moreover, 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 the car is avoided, the service life of the connector assembly is prolonged, and the accident rate is reduced.
However, the conductivity of the aluminum cable is inferior to that of the copper cable, and the sectional area of the cable must be increased to ensure the normal current value, so that the aluminum cable has a large diameter and occupies a large space in the process of processing and installation.
The electrical connection backbone 2 connects the first connector 11 and the second connector 12, and the second connector 12 is connected to the vehicle-mounted battery, thereby completing electrical transmission from the first connector 11 to the vehicle-mounted battery. When the automobile is charged, the current flowing through the electric connection framework 2 is very large, the temperature of the electric connection framework 2 is rapidly raised, the electric connection framework 2 is provided with at least one hollow inner cavity 3, at least part of the hollow inner cavity 3 is filled with a solid or semi-solid cooling medium, and the electric connection framework 2 is cooled, so that the heated electric connection framework 2 is cooled, and the connector assembly can work at a safe temperature. Furthermore, since the electrical connection framework 2 has at least one hollow cavity 3, the material of the electrical connection framework 2 may be a material containing rigid hollow conductors to form the hollow cavity 3.
In some embodiments, as shown in fig. 2, the electrical connection backbone 2 has a hollow interior 3 with a uniform wall thickness of the hollow conductor material.
In some embodiments, the electrical connection backbone 2 has a plurality of hollow lumens 3, the hollow lumens 3 being distributed in the electrical connection backbone 2. Specifically, as shown in fig. 5, the electrical connection bobbin 2 has four hollow inner cavities 3, and the four hollow inner cavities 3 are distributed in the electrical connection bobbin 2 in the circumferential direction. Preferably, the hollow cavities 3 may be evenly distributed in the electrical connection backbone 2. It is understood that, in other embodiments, the number of the hollow inner cavities 3 is not limited to four, and the number of the hollow inner cavities 3 may be set according to actual requirements.
Further, in some embodiments, the cross-sectional area of the hollow conductor material of the electrical connection backbone 2 is 0.3mm 2 -240mm 2 . The sectional area of the hollow conductor material of the electrical connection frame 2 determines the current that the electrical connection frame 2 can conduct, generally, the electrical connection frame 2 for realizing signal conduction has smaller current and smaller sectional area of the electrical connection frame 2, for example, the minimum sectional area of the electrical connection frame 2 for transmitting signals can reach 0.3mm 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 sum of the cross-sectional areas of the hollow cavities 3 accounts for 3.7% -85% of the cross-sectional area of the circumscribed circle of the electrical connection backbone 2.
If the sum of the sectional areas is too large, the supporting force of the electrically connected framework 2 is insufficient, if the sum of the sectional areas is too small, the cooling effect is insufficient, in order to select the reasonable sum of the sectional areas of the hollow cavities 3, the inventor conducts related tests, and the experimental method is to select the electrically connected frameworks 2 with different numbers of hollow cavities 3, apply 80N of force, observe whether the electrically connected frameworks 2 are bent, and if the electrically connected frameworks are not qualified. In a closed environment, the same current is conducted to the electric connection frameworks 2 with different numbers of hollow inner cavities 3, and the temperature rise is less than 50K, which is a qualified value. The results are shown in Table 1.
Table 1: the ratio of the sum of the cross-sectional areas of the hollow inner cavity 3 to the cross-sectional area of the outer diameter of the electrically connecting skeleton 2 has influence on the support and temperature rise of the electrically connecting skeleton 2
As can be seen from the above table 1, when the ratio of the sum of the sectional areas of the hollow inner cavities 3 to the sectional area of the outer diameter of the electrically-connected framework 2 is less than 3.7%, the temperature rise of the electrically-connected framework 2 is greater than 50K, and the electrically-connected framework is not qualified; when the ratio of the sum of the sectional areas of the hollow inner cavities 3 to the sectional area of the outer diameter of the electrically connecting skeleton 2 is more than 85%, the electrically connecting skeleton 2 is deformed under the action of 80N, and the cooling medium is easily leaked, so that the inventor prefers that the sum of the sectional areas of the hollow inner cavities 3 accounts for 3.7% -85% of the sectional area of the outer diameter of the electrically connecting skeleton 2.
In some embodiments, the cross-sectional shape of the outer contour of the electrical connection skeleton 2 is one or more of circular, oval, rectangular, polygonal, A-shaped, B-shaped, D-shaped, M-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, arc-shaped and wave-shaped.
Specifically, a part of the cross section of the electrical connection skeleton 2 may be a circular structure, and the other part may be an elliptical structure, and the electrical connection skeleton 2 is a rod-shaped conductor with a large diameter, so that when the wiring meets a narrow space, the design of the structure can better adapt to the wiring path of the vehicle without changing the electric energy transmission effect. When the two traditional leads are used for matching the automobile body, two different leads are often used for switching modes such as welding or crimping. Therefore, the cost is effectively reduced in the design of this scheme, matching automobile body profile that can be better simplifies the wiring technology, reduces the wiring consumptive material, has improved the installation effectiveness.
In some embodiments, a partial region of the electrical connection backbone 2 is flexible. The flexible material may be a multi-core cable or a braided cable or a stack of layers of thin sheets in a flexible array. The flexible material is easy to bend and has excellent conductivity, the thin plates are soft and easy to deform, the flexible conductor is suitable for being used as a flexible conductor, and the flexibility and the power-on efficiency can be guaranteed by stacking the multiple layers of thin plates. The electric connection framework 2 is formed by combining and connecting rigid materials and flexible materials, can be well matched with the outline of a vehicle body, and saves materials and space.
In some embodiments, the electrical connection backbone 2 comprises at least one bend. From this, can set up the kink according to the concrete demand of wiring in-process, make things convenient for operating personnel to lay wire.
In some embodiments, as shown in fig. 3, the insulating layer 14 is sleeved on the outer periphery of the electrical connection frame 2. The insulating layer 14 can prevent the electrical connection frame 2 from contacting the vehicle shell to cause short circuit.
Further, as shown in fig. 4, the shielding layer 5 and the outer insulating layer 13 are sequentially sleeved outside the insulating layer 14. The shielding layer 5 can reduce the interference of the electromagnetic radiation generated by the electric connection framework 2 to other electric devices in the vehicle, and the insulating layer 14 is arranged between the shielding layer 5 and the electric connection framework 2 to prevent the shielding layer 5 and the electric connection framework 2 from contacting because the shielding layer 5 is made of a conductor and needs to be grounded. The outer insulating layer 13 can prevent the shield layer 5 from short-circuiting in contact with the vehicle body.
In some embodiments, the connector (e.g., the first connector 11 and the second connector 12) further includes a shielding inner housing 4 therein, and the shielding inner housing 4 is made of a conductive material. 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 shielding layer 5 to form a complete shielding device. The shielding layer 5 is made of rigid conductive material. Furthermore, the material of the shielding layer 5 may be metal or conductive plastic. Therefore, the shielding inner shell 4 and the shielding layer 5 can play a shielding role, effectively shield electromagnetic interference generated by electrifying the electric connection framework 2, save the use of a shielding net and reduce the cost of the connector assembly.
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 2, 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 2: influence of the transfer impedance of the shielded inner housing 4 on the shielding performance
As can be seen from table 2 above, when the transfer impedance value of the shield inner case 4 is greater than 100m Ω, the shielding performance value of the shield inner case 4 is less than 40dB, which does not meet the requirement of the ideal value, and when the transfer impedance value of the shield inner case 4 is less than 100m Ω, the shielding performance values of the shield inner case 4 all meet the requirement of the ideal value, and the trend is better, and therefore, the inventors set the transfer impedance of the shield inner case 4 to be less than 100m Ω.
Further, the material of the shielding inner case 4 includes conductive metal or conductive plastic. The conductive plastic can be a high polymer material containing conductive particles, and the conductive particle material contains one of metal, conductive ceramic, carbon-containing conductor, solid electrolyte and mixed conductor; the material of the high molecular 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.
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.
Further, the material of the metal in the material of the conductive particles may contain 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 shielding inner shell 4, the inventor performed an experiment to manufacture samples 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 3 below, and in this embodiment, the conductivity of the shielding inner shell 4 is greater than 99% as an ideal value.
Table 3: influence of metallic particles of different materials on the conductivity of the shielded inner shell 4
As can be seen from table 3 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 as to improve the conductivity and mechanical properties of the metal itself. 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 in the material of the conductive particles may contain one of graphite powder, a carbon nanotube material, a 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, so that the electromagnetic shielding of the electric connection framework 2 can be well realized.
In some embodiments, the material of the connection terminal 7 is copper or copper alloy, the material of the electrical connection frame 2 is 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 thermal energy and mechanical energy required for welding using an electric arc as a heat source and 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 shield layer 5 is electrically connected to the shield inner housing 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 layer 5 and then punching the shielding inner shell and the shielding layer 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 7 and the electric connection framework 2, and is not described again.
In some embodiments, the cooling medium cools the electrical connection backbone 2 at a rate of 0.05K/s to 10.3K/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 inventor selects 10 electrically-connected frameworks 2 with the same cross section, the same material and the same length, applies the same current, adopts the cooling media with different cooling rates 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 4.
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 4: influence of cooling media with different cooling rates on temperature rise of electric connection framework 2
As can be seen from table 4 above, when the cooling rate of the cooling medium is less than 0.05K/s, the temperature rise value of the electrically connecting bobbin 2 is not qualified, and the larger the cooling rate, the smaller the temperature rise value of the electrically connecting bobbin 2. However, when the cooling rate of the cooling medium is more than 10.3K/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 medium to 0.05K/s to 10.3K/s.
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 effect of the volume of the cooling medium on the temperature rise of the electrically connected frame 2, the inventors selected 10 electrically connected frames 2 having the same cross-sectional area, the same material and the same length, passed the same current, cooled the electrically connected frames 2 using the cooling medium of different volumes, read the temperature rise value of each electrically connected frame 2, and recorded it in table 5.
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 volumes, 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 5: influence of cooling media of different volumes on temperature rise of electrical connection framework 2
As can be seen from table 5 above, when the volume fraction is less than 1.1%, the temperature rise value of the electrically connecting bobbin 2 is not good. Therefore, 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 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 changes of cold and hot temperatures, and the consistency and the 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 cooling medium is disposed on the periphery of the electrical connection frame 2 by injection molding, extrusion molding, dip molding, foaming, winding, weaving, pouring, 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, thus achieving 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 electric 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.
In some embodiments, the cooling medium is distributed in a non-uniform state in the hollow interior 3. In the vehicle body space, the heating values of different positions are inconsistent, the part needing better heat dissipation effect can be 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 part is larger, more cooling media need to be filled, when the straight line part of the electric connection framework is in a small heating value, less cooling media can be filled, even the cooling media are not filled, the weight of the connector assembly is reduced, the consumption of the cooling media is reduced, and the cost is saved.
In some embodiments, the cooling medium comprises one 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.
The present invention also provides a vehicle including a connector assembly with a solid state cooling medium as described above.
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 (20)
1. The utility model provides a connector assembly with solid-state cooling medium, includes at least one electricity and connects skeleton and connector, 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 at least one cavity inner chamber to connect the skeleton, at least part fills solid-state or semi-solid state cooling medium in the cavity inner chamber.
2. The connector assembly with solid state cooling medium of claim 1, wherein the electrical connection backbone comprises a rigid hollow conductor material.
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 cross-sectional shape of the outer contour of the electrical connection backbone 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, arc-shaped and wave-shaped.
5. The connector assembly with solid cooling medium of claim 2, wherein the wall thickness of the hollow conductor material is uniform when the electrical connection backbone has a hollow interior.
6. The connector assembly with solid cooling medium of claim 2, wherein the cross-sectional area of the hollow conductor material is 0.3mm 2 -240mm 2 。
7. The connector assembly with solid state cooling medium of claim 1, wherein the sum of the cross-sectional areas of the hollow interior cavities accounts for 3.7% -85% of the cross-sectional area of the circumscribed circle of the electrical connection backbone.
8. The connector assembly with solid cooling medium of claim 1, wherein the connector interior further comprises a shielded inner housing having a transfer impedance of less than 100m Ω.
9. The connector assembly with solid state cooling medium of claim 1, wherein an outer perimeter of the electrical connection backbone is jacketed with an insulating layer.
10. The connector assembly with solid cooling medium of claim 8, wherein the electrical connection frame is sleeved with an insulating layer, and the insulating layer is further sleeved with a shielding layer and an outer insulating layer.
11. The connector assembly with solid cooling medium of claim 10, wherein the shield layer is electrically connected to the shielded inner housing.
12. The connector assembly with solid state cooling medium of claim 1, wherein the cooling medium cools the electrical connection backbone at a rate of 0.05K/s to 10.3K/s.
13. The connector assembly with solid state cooling medium of claim 1, wherein the cooling medium is a thermally conductive tape, a thermally conductive insulating elastomeric rubber, a flexible thermally conductive pad, a thermally conductive filler, and a thermally conductive insulating potting compound.
14. 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, or wrapping.
15. 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.
16. The connector assembly with solid cooling medium of claim 1, wherein the cooling medium is distributed unevenly in the hollow interior.
17. The connector assembly with solid state cooling medium of claim 1 wherein one of said connectors is a charging dock.
18. The connector assembly with solid state cooling medium of claim 1, wherein a portion of the electrical connection backbone is flexible.
19. The connector assembly with solid state cooling medium of claim 1, wherein the electrical connection backbone comprises at least one bend.
20. A vehicle comprising a connector assembly with a solid cooling medium as claimed in any one of claims 1-19.
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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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