The present invention relates to a module and, more particularly, to a module for a high-current plug.
In the case of high currents, especially when alternating currents or pulsed currents are involved, currents can occur even in a shield of shielded cables such as coaxial cables. These currents lead to an electromagnetic field outside the cable and thereby cause disturbances at other components.
A previous method for controlling frequency and power is the PWD-VFD (Pulse Width Modulation—Variable Frequency Drive). Here an alternating current is generated by switching a direct current successively in alternating directions. The switching produces significant quantities of common mode noise (CMN), which has to be taken up by the power and grounding systems and dissipated (>1 MHz). To prevent these stray currents from damaging or disrupting the system components, the grounding system must provide a path with low impedance for the currents of the CMN. At the same time, shield currents with low frequencies (<1 KHz) should be reduced in the shielded cables on account of the heat build-up in the plug.
A module for a high-current plug and/or a high-current cable includes a coupling face coupling to a shield and an influencing device influencing an electromagnetic property of the shield.
The invention will now be described by way of example with reference to the accompanying Figures, of which:
The present disclosure will be described hereinafter in further detail with reference to the following embodiments, taken in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar parts. The description of the embodiments of the present disclosure hereinafter with reference to the accompanying drawings is intended to explain the general inventive concept of the present disclosure, and should not be constructed as a limitation to the present disclosure. The embodiments and configurations depicted here are each independent of one another and can be combined with one another in any way, according to necessity in a particular application.
A high-current plug 2 according to an embodiment is shown in
The high-current plug 2, as shown in
The high current plug 2 includes a module 1, shown in
In an embodiment, the high-current plug 2 has a receptacle for the module 1. The module 1 can be configured complementarily to the receptacle.
As shown in
In an embodiment, the influencing device 6 can be formed, for example, by a metal plate 9 and/or comprise such a metal plate 9 as shown in
In an embodiment, whether the influencing device 6 is an electrical structural component 8 or a metal plate 9 is selected according to an electromagnetic behavior to influence the shield 4; the influencing device 6 can be chosen based on application and optimized for the application.
If several elements are present in the influencing device 6, these can form an electric circuit 66 shown in
As shown in
The module 1, as shown in
The high-current cable 5 and an equivalent circuit diagram are shown in
The coupling faces 3, or contact faces 7, are coupled to and electrically contact the shield 4, the curves 10 permit a simple connection between the contact face 7 and the shield 4. The contact faces 7 are positioned externally and on a side of the module 1 facing the shield 4. The module 1 is thereby fitted on the high-current plug 2 and/or the high-current cable 5. In an embodiment, the high-current plug 2 has a pressing mechanism pressing the module 1 onto the shield 4. In another embodiment, a contactless coupling can take place, for example inductively or capacitively.
Due to the coupling of the influencing device 6, which can add a further capacitance 61 in the form of a capacitor 63, the electromagnetic properties and electromagnetic compatibility (EMC) of the shield 4 and the high-current cable 5 can be influenced positively. The influencing device 6 can be configured to influence the radiation properties of the shield 4 in order to prevent a disruption of adjacent mechanisms. To facilitate adaptation to different high-current mechanisms, at least a part of the influencing device 6 can be exchangeable. For example, electrical components 8 such as resistors 65, coils, or capacitors 63 can be exchangeable. The shield 4 current and/or a radiation behavior of the high-current cable 5, such as a coaxial cable, and high-current plugs can then be improved and/or controlled.
In another embodiment, the module 1 can also be used outside of the high-current plug 2; the module 1 can be used on a cable harness.
Number | Date | Country | Kind |
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102017219493.6 | Nov 2017 | DE | national |
This application is a continuation of PCT International Application No. PCT/EP2018/079472, filed on Oct. 26, 2018, which claims priority under 35 U.S.C. § 119 to German Patent Application No. 102017219493.6, filed on Nov. 2, 2017.
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Number | Date | Country |
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107005210 | Aug 2017 | CN |
8810281 | Dec 1989 | DE |
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Entry |
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PCT Written Opinion and International Search Report, App No. PCT/EP2018/079472, dated Jan. 14, 2019, 13 pages. |
First Office Action from the CNIPA, dated Dec. 25, 2020, in Appln No. 201880070373.2 and English translation thereof; 25 pp. |
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Number | Date | Country | |
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20200185864 A1 | Jun 2020 | US |
Number | Date | Country | |
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Parent | PCT/EP2018/079472 | Oct 2018 | US |
Child | 16794890 | US |