CN116190072A - Two-port common-mode inductor and electric automobile - Google Patents

Two-port common-mode inductor and electric automobile Download PDF

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Publication number
CN116190072A
CN116190072A CN202310168213.4A CN202310168213A CN116190072A CN 116190072 A CN116190072 A CN 116190072A CN 202310168213 A CN202310168213 A CN 202310168213A CN 116190072 A CN116190072 A CN 116190072A
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China
Prior art keywords
winding
magnetic core
amorphous magnetic
mode inductor
port
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CN202310168213.4A
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Chinese (zh)
Inventor
李靖恺
朱楠
邹明敏
崔建勇
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Zhizhan Technology Shanghai Co ltd
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Zhizhan Technology Shanghai Co ltd
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Priority to CN202310168213.4A priority Critical patent/CN116190072A/en
Publication of CN116190072A publication Critical patent/CN116190072A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Filters And Equalizers (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The application discloses a two port common mode inductance and electric automobile. The two-port common mode inductor comprises: comprises an amorphous magnetic core, a first winding, a second winding and a seat board; the amorphous magnetic core is horizontally arranged on the seat board, and the first winding and the second winding are positioned on the amorphous magnetic core; the first winding and the second winding are respectively wound on two sides of the amorphous magnetic core; the first winding comprises a first winding wire, the first winding wire is led in from the lower end of one side of the amorphous magnetic core, the second winding wire comprises a second winding wire, and the second winding wire is led in from the lower end of the other side of the amorphous magnetic core; through the design, the filtering effect from the inside of the all-in-one controller assembly to the DCDC output end part circuit is improved, the cost can be reduced, and the electromagnetic radiation of the common mode inductor to the surrounding space can be reduced.

Description

Two-port common-mode inductor and electric automobile
Technical Field
The application relates to the technical field of electric automobiles, in particular to a two-port common-mode inductor and an electric automobile.
Background
In the prior art, a hydrogen fuel electric automobile consists of a high-voltage system such as an electric drive assembly, a high-voltage power Chi Baozong system, a pile assembly and the like, and when the automobile pile works, the inside of the pile is rectified into stable high-voltage direct current through a high-voltage DCDC (direct current to direct current) module in an all-in-one controller, and then the stable high-voltage direct current is transmitted to a high-voltage battery pack and other power utilization modules to drive the automobile to run. In the process, the wire harness and the space inside the all-in-one controller generate electromagnetic interference outwards, and the normal work of other electric appliances and the quality of a power grid are affected. In order to solve the problem, the all-in-one controller in the prior art performs independent filtering on each internal component on the basis of adding a filtering device at a high-voltage input/output end so as to filter interference. However, most of the whole factories still face the problem that the transmission emission and the radiation emission exceed the standard when the vehicles run, and the source of interference is mostly the air module in the all-in-one controller assembly, so how to reduce the electromagnetic interference from the inside to the outside of the all-in-one controller is a technical problem to be solved. In addition, as the integration level of the high-voltage system of the electric automobile is higher and higher, the problem of space utilization rate of each subsystem is also paid attention to gradually, and small space, low cost and high integration level are the development trend in the future.
The description of the background art is only for the purpose of facilitating an understanding of the relevant art and is not to be taken as an admission of prior art.
Disclosure of Invention
Therefore, the embodiment of the invention aims to solve the problem of insufficient filtering capability of a single common-mode inductor in the prior art, and provides a two-port flat line common-mode inductor, wherein coils in the common-mode inductor are wound on the same magnetic core in a specific winding mode, so that the filtering effect from the inside of the all-in-one controller assembly to a DCDC output end part circuit is improved, the cost can be reduced, and the electromagnetic radiation of the common-mode inductor to surrounding space can be reduced.
In a first aspect, an embodiment of the present invention provides a two-port common mode inductor, which is characterized in that,
comprising the following steps: comprises an amorphous magnetic core, a first winding, a second winding and a seat board;
the amorphous magnetic core is horizontally arranged on the seat board, and the first winding and the second winding are positioned on the amorphous magnetic core;
the first winding and the second winding are respectively wound on two sides of the amorphous magnetic core;
the first winding comprises a first winding wire, the first winding wire is led in from the lower end of one side of the amorphous magnetic core, the second winding wire comprises a second winding wire, and the second winding wire is led in from the lower end of the other side of the amorphous magnetic core.
Optionally, the first winding wire is wound around the outer edge of the amorphous magnetic core anticlockwise from the lower end of the amorphous magnetic core after being led in, and the winding area is one fourth of the area of the amorphous magnetic core.
Optionally, after the second winding is led in, the second winding is clockwise wound around the outer edge of the amorphous magnetic core from the upper end of the amorphous magnetic core, and the winding area is one fourth of the area of the amorphous magnetic core.
Optionally, the outgoing direction of the first winding is opposite to the outgoing direction of the second winding.
Optionally, the wire inlet end of the first winding is connected to the positive electrode of the output end of the direct current-to-direct current module, and the wire inlet end of the second winding is connected to the negative electrode of the output end of the direct current-to-direct current module.
Optionally, the outlet end of the first winding is connected to the positive electrode of the output connector, and the outlet end of the second winding is connected to the negative electrode of the output connector.
Optionally, adjusting the number of turns of the first winding to adjust the inductance;
the number of turns of the second winding is adjusted to adjust the inductance of the inductor.
Optionally, the number of winding turns at the output end of the direct current-direct current module is increased, so as to reduce electromagnetic interference of the output port of the all-in-one controller.
Optionally, the number of winding turns at the input end of the output connector is increased, so as to reduce electromagnetic interference of the output port of the all-in-one controller.
In a second aspect, an embodiment of the present invention provides an electric vehicle, which is characterized in that the electric vehicle includes a two-port common-mode inductance as set forth in any one of claims 1 to 9.
Additional optional features and technical effects of embodiments of the invention are described in part below and in part will be apparent from reading the disclosure herein.
Drawings
Embodiments of the present invention will hereinafter be described in conjunction with the appended drawings, wherein like or similar reference numerals denote like or similar elements, and wherein:
FIG. 1 shows a schematic diagram of a common mode inductance in which an embodiment of the invention may be implemented;
FIG. 2 illustrates a schematic diagram of a two-port common-mode inductor implementation in which embodiments of the present invention may be implemented;
fig. 3 illustrates a schematic diagram of a system block diagram including a two-port common-mode inductor in which an embodiment of the invention may be implemented.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions are also possible below.
In the embodiment of the invention, a two-port flat wire common-mode inductor is provided, a coil in the common-mode inductor is wound on the same magnetic core and a specific winding mode is adopted, so that the filtering effect from the inside of the all-in-one controller assembly to a DCDC output end part circuit is improved, the space from the input end of the all-in-one controller to the DCDC output end part circuit is reduced, and the cost is reduced; reducing the internal radiation emission intensity of the all-in-one controller; and the optimal distribution of the impedance can be realized by adjusting the filtering parameters of the two-part circuit.
Fig. 1 shows a schematic diagram of a common mode inductor in which an embodiment of the present invention may be implemented, where the common mode inductor shown in fig. 1 includes a first common mode choke W1, a second common mode choke W2, a first port 11, a second port 12, a third port 13, and a fourth port 14. Wherein the first port 11 and the second port 12 are the same name terminals of the common mode inductor. Commonly used to filter electromagnetic interference signals common mode in computer switching power supplies. In board design, common mode inductance also plays a role of EMI filtering for suppressing electromagnetic waves generated by the high-speed signal line from radiating outwards.
The coils of the first common mode choke W1 and the second common mode choke W2 are wound on the same core, and the number of turns and the phase are the same (winding reverse). Thus, when the normal current in the circuit passes through the common mode choke, the current generates a reverse magnetic field in the same coil, which cancel each other out. At this time, the normal signal current is mainly affected by the coil resistance (and damping due to a small amount of leakage); when the common mode choke coil passes through the coil, due to the isotropy of the common mode choke coil, a magnetic field in the same direction is generated in the coil, the inductance of the coil is increased, the coil is enabled to be high in impedance, a strong damping effect is generated, and therefore the common mode choke coil is attenuated, and the purpose of filtering is achieved.
Fig. 2 shows a schematic diagram of a two-port common-mode inductor implementation in which an embodiment of the present invention may be implemented, as shown in fig. 2, where the two-port common-mode inductor includes an amorphous magnetic core 1, a first winding 2, a second winding 3, and a base plate 4, where the amorphous magnetic core 1 is horizontally placed, that is, horizontally placed.
The wire inlet position of the first winding 21 of the first winding 2 is the lower end of the amorphous magnetic core 1, and surrounds the outer edge of the amorphous magnetic core anticlockwise, and the winding area is one quarter of the area of the amorphous magnetic core 1; the second winding 31 of the second winding 3 is arranged below the other end of the amorphous magnetic core 1 to be clockwise around the outer wall of the amorphous magnetic core 1, the winding area is one fourth of the area of the amorphous magnetic core 1, and the wire outlet direction is opposite to the first winding 21 of the first winding 2.
The common mode inductor shown in fig. 2 is led out from the upper end, the inlet wire end of the first winding 2 is connected with the positive electrode of the output end of the high-voltage DCDC module, the inlet wire end of the second winding 3 is connected with the negative electrode of the output end of the DCDC module, the outlet wire end of the first winding 2 is connected with the positive electrode of the input end of the output connector, and the outlet wire end of the second winding 3 is connected with the negative electrode of the input end of the output connector.
In the embodiment shown in fig. 2, the first winding of the first winding covers a quarter of the area of the amorphous magnetic core, and the second winding of the second winding also covers the same area, so that the two-port common-mode inductor in the embodiment shown in fig. 2 can filter electromagnetic interference from the high-voltage DCDC output end to the outside of the product, and the filtering effect is good.
As shown in fig. 2, in the first winding, the winding mode after the wire is fed starts from the lower end, and in the second winding, the winding mode starts from the lower end, but the winding direction is opposite to that of the first winding; the winding mode has distinct layers and is convenient for distinguishing.
Respectively testing the impedance of the two-port common-mode inductor and the impedance of a single original common-mode inductor, and comparing the impedance; the two-port common mode inductor provided in the low band application embodiment can provide an impedance much greater than the original common mode inductor.
And under the condition that the magnetic core materials, the winding modes and the turns are the same, the radiation emission quantity of the horizontally arranged inductor is the lowest, and the interference of the inductor on surrounding devices is reduced.
The two-port common mode inductor of the embodiment shown in fig. 2 can adjust the inductance of the two-part inductor by adjusting the number of turns of the first winding and the number of turns of the second winding, thereby realizing the optimal distribution of impedance: when the electromagnetic interference of the all-in-one controller is large, the number of winding turns of the output end and the output connector part of the all-in-one controller can be increased, the filtering effect is improved, and the electromagnetic interference level of the output port of the all-in-one controller is reduced.
In the invention, DCDC represents a device for converting a direct current power supply with a certain voltage level into a direct current power supply with other voltage levels, and is widely applied to a fuel cell automobile all-in-one controller assembly.
Fig. 3 illustrates a schematic diagram of a system block diagram including a two-port common-mode inductor in which an embodiment of the invention may be implemented. As shown in fig. 3, the wire inlet end of the first winding is connected with the positive electrode of the output end of the high-voltage direct current-to-direct current module, the wire inlet end of the second winding is connected with the negative electrode of the output end of the direct current-to-direct current module, the wire outlet end of the first winding is connected with the positive electrode of the input end of the output connector, and the wire outlet end of the second winding is connected with the negative electrode of the input end of the output connector. The first winding set, the second winding set and the output connector shown in fig. 3 each include a respective adjusting module, where the adjusting modules may be included in a corresponding module or may be independent of the respective modules, and fig. 3 is for illustration only and is not limited in particular. In the embodiment shown in fig. 3, the adjusting module of the first winding group may adjust the number of turns of the coil of the first winding group to adjust the inductance of the first winding group, and the adjusting module of the second winding group may adjust the number of turns of the coil of the second winding group to adjust the inductance of the second winding group, so as to achieve optimal distribution of impedance and achieve optimal filtering effect. The number of turns of the output end of the all-in-one controller may be increased in the embodiment shown in fig. 3, and the output connector adjusting module may increase the number of turns of the output connector to reduce the electromagnetic interference level of the output end of the all-in-one controller.
According to the embodiment of the application, the filtering effect from the high-voltage DCDC output end to the partial circuits of the input ends of other components in the all-in-one controller assembly of the electric automobile is improved through the two-port common mode inductor; the two-port common-mode inductor provided by the embodiment of the application replaces the original common-mode inductor, so that the space from the input end of the all-in-one controller to the DCDC output end part circuit is reduced, and the cost is reduced; reducing the internal radiation emission intensity of the all-in-one controller; and the filtering parameters of the two-part circuit can be adjusted, so that the optimal distribution of the impedance is realized.
The acts of the methods, procedures, or steps described in accordance with the embodiments of the present invention do not have to be performed in a specific order and still achieve desirable results unless explicitly stated. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Various embodiments of the invention are described herein, but for brevity, description of each embodiment is not exhaustive and features or parts of the same or similar between each embodiment may be omitted. Herein, "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that it is applicable to at least one embodiment or example, but not all embodiments, according to the present invention. The above terms are not necessarily meant to refer to the same embodiment or example. Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction.
The exemplary systems and methods of the present invention have been particularly shown and described with reference to the foregoing embodiments, which are merely examples of the best modes for carrying out the systems and methods. It will be appreciated by those skilled in the art that various changes may be made to the embodiments of the systems and methods described herein in practicing the systems and/or methods without departing from the spirit and scope of the invention as defined in the following claims.

Claims (10)

1. A two port common mode inductor, comprising: comprises an amorphous magnetic core, a first winding, a second winding and a seat board;
the amorphous magnetic core is horizontally arranged on the seat board, and the first winding and the second winding are positioned on the amorphous magnetic core;
the first winding and the second winding are respectively wound on two sides of the amorphous magnetic core;
the first winding comprises a first winding wire, the first winding wire is led in from the lower end of one side of the amorphous magnetic core, the second winding wire comprises a second winding wire, and the second winding wire is led in from the lower end of the other side of the amorphous magnetic core.
2. The two-port common-mode inductor according to claim 1, wherein the first winding wire is wound around the outer edge of the amorphous magnetic core counterclockwise from the lower end of the amorphous magnetic core, and the winding area is one-fourth of the area of the amorphous magnetic core.
3. The two-port common mode inductor according to claim 1, wherein the second winding wire is wound around the outer edge of the amorphous magnetic core clockwise from the upper end of the amorphous magnetic core, and the winding area is one fourth of the area of the amorphous magnetic core.
4. The two-port common-mode inductor according to claim 1, wherein the outgoing direction of the first winding is opposite to the outgoing direction of the second winding.
5. The two-port common mode inductor according to claim 1, wherein the incoming end of the first winding is connected to the positive pole of the output end of the dc-dc module, and the incoming end of the second winding is connected to the negative pole of the output end of the dc-dc module.
6. The two-port common mode inductor according to claim 1, wherein the outlet of the first winding is connected to the positive pole of the output connector and the outlet of the second winding is connected to the negative pole of the output connector.
7. The two-port common mode inductor according to claim 1, wherein the number of turns of the first winding is adjusted to adjust the inductance of the inductor;
the number of turns of the second winding is adjusted to adjust the inductance of the inductor.
8. The two-port common mode inductor of claim 5, wherein the number of windings at the output of the dc-to-dc module is increased to reduce electromagnetic interference at the output port of the all-in-one controller.
9. The two-port common mode inductor of claim 6, wherein the number of turns of the windings at the input of the output connector is increased to reduce electromagnetic interference at the output port of the all-in-one controller.
10. An electric vehicle, characterized in that it comprises a two-port common-mode inductance according to any one of claims 1 to 9.
CN202310168213.4A 2023-02-24 2023-02-24 Two-port common-mode inductor and electric automobile Pending CN116190072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310168213.4A CN116190072A (en) 2023-02-24 2023-02-24 Two-port common-mode inductor and electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310168213.4A CN116190072A (en) 2023-02-24 2023-02-24 Two-port common-mode inductor and electric automobile

Publications (1)

Publication Number Publication Date
CN116190072A true CN116190072A (en) 2023-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310168213.4A Pending CN116190072A (en) 2023-02-24 2023-02-24 Two-port common-mode inductor and electric automobile

Country Status (1)

Country Link
CN (1) CN116190072A (en)

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