CN116313432B - Inductor for intelligent network-connected automobile - Google Patents

Inductor for intelligent network-connected automobile Download PDF

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Publication number
CN116313432B
CN116313432B CN202310569006.XA CN202310569006A CN116313432B CN 116313432 B CN116313432 B CN 116313432B CN 202310569006 A CN202310569006 A CN 202310569006A CN 116313432 B CN116313432 B CN 116313432B
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circuit
winding
magnetic core
module
inductance
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CN116313432A (en
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柯泽钦
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Shenzhen Xinqifa Automobile Product Co ltd
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Shenzhen Xinqifa Automobile Product Co ltd
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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
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • 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
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • 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
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • 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)
  • Measurement Of Current Or Voltage (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The invention discloses an inductor for an intelligent network-connected automobile, which relates to the technical field of inductance and solves the technical problem of interference resistance, and the adopted scheme comprises the following steps: the electromagnetic interference-free type electromagnetic interference-free shielding cover comprises a shielding cover, a first winding, a second winding, a first magnetic core, a second magnetic core, an inductance measurement module and an electromagnetic interference-free module, wherein the first winding and the second winding are arranged in parallel, the first winding and the second winding are arranged around the first magnetic core and the second magnetic core, the first magnetic core is sleeved outside the second magnetic core, the first magnetic core and the second magnetic core extend along the direction of an axis A, inductance measurement is realized through the inductance measurement module through an STM32 series singlechip, real-time control is realized through the FPGA measurement and control module, and anti-interference calculation capability is improved through the electromagnetic interference-free module based on an interference-free circuit, a common mode detection module and an error amplifier.

Description

Inductor for intelligent network-connected automobile
Technical Field
The invention relates to the technical field of inductors, in particular to an inductor for an intelligent network-connected automobile.
Background
The intelligent network-connected automobile (Intelligent Connected Vehicle, ICV) is an organic combination of the Internet of vehicles and an intelligent automobile, is a new-generation automobile which is provided with advanced devices such as an on-board sensor, a controller and an actuator, integrates modern communication and network technology, realizes intelligent information exchange and sharing of the automobile, people, roads, background and the like, realizes safe, comfortable, energy-saving and efficient running, and can finally replace people to operate. The intelligent network-connected automobile is more focused on solving the core problems of safety, energy conservation, environmental protection and the like which restrict the development of industry, has autonomous environment sensing capability, focuses on the automobile, and is focused on improving the safety of the automobile. The intelligent network-connected automobile is provided with advanced devices such as a vehicle-mounted sensor, a controller and an actuator in a specific application process, combines modern communication and network technology, realizes V2X intelligent information exchange sharing, has complex environment sensing, intelligent decision, cooperative control and execution functions and the like, can realize safe, comfortable, energy-saving and efficient running, and can finally replace a new-generation automobile operated by people.
In the application process of the intelligent network-connected automobile, the electric appliance application of various charging equipment cannot be avoided, the conversion and storage of electric energy are realized in order to improve the intelligent network-connected application capability, energy supply is provided for the intelligent network-connected automobile energy supply, and an Inductor (Inductor) is an element capable of converting electric energy into magnetic energy and storing the magnetic energy. The inductor is similar in structure to a transformer but has only one winding. The inductor has a certain inductance, which only impedes the current variation. If the inductor is in a state where no current is passing, it will attempt to block the flow of current through it when the circuit is on; if the inductor is in a state where current is flowing, it will attempt to maintain the current unchanged when the circuit is open. The inductor is also called choke, reactor and dynamic reactor. Various energy storage ideas can be provided for the internet of things automobile by applying the inductor to the intelligent internet of things automobile, but the intelligent internet of things automobile in the prior art needs higher anti-interference capability, and the inductor in the conventional technology is poor in anti-interference capability.
Disclosure of Invention
Aiming at the defects of the technology, the invention discloses an inductor for an intelligent network-connected automobile, which can improve the anti-interference capability of the inductor, reduce noise, improve the data calculation precision and have higher data precision.
In order to achieve the technical effects, the invention adopts the following technical scheme:
an inductor for an intelligent network-connected vehicle, comprising:
the electromagnetic anti-interference device comprises a shielding cover, a first winding, a second winding, a first magnetic core, a second magnetic core, an inductance measurement module and an electromagnetic anti-interference module, wherein the first winding and the second winding are arranged in parallel, the first winding and the second winding are arranged around the first magnetic core and the second magnetic core, the first magnetic core is sleeved outside the second magnetic core, the first magnetic core and the second magnetic core extend along the direction of an axis A, the shielding cover is arranged outside the first winding and the second winding, the inductance measurement module is arranged on the cross section of the first winding, and the electromagnetic anti-interference module is arranged inside the shielding cover;
as a further technical scheme of the invention, the first winding and the second winding are coaxial cables or copper wires.
As a further technical scheme of the invention, the inductance measurement module comprises an STM32 series singlechip and a measurement circuit, wherein the measurement circuit comprises a first-order RL input circuit, a triode switch circuit, an operational amplification circuit, a voltage division circuit and a measurement output circuit, wherein the output end of the first-order RL input circuit is connected with the input end of the triode switch circuit, the output end of the triode switch circuit is connected with the input end of the operational amplification circuit, the operational amplification circuit is connected with the voltage division circuit, and the output end of the operational amplification circuit is connected with the measurement output circuit.
As a further technical scheme of the invention, the inductance measurement module realizes inductance measurement through an STM32 series singlechip, and is also connected with an FPGA measurement and control module for realizing real-time control of inductance measurement.
As a further technical scheme of the invention, the FPGA measurement and control module comprises a power supply module, a comparator, a voltage divider, a turn number control module, a signal conditioning circuit, an isolation module and an inductance power calculation module.
As a further technical scheme of the invention,
the inductive power calculation module formula is realized through transient current and transient voltage:
the output transient current formula is:
（1）
in formula (1), wherein N represents the number of measurements;a transient current or a number of pulses through which the transient current flows;representing the sum of N current measurements; i represents all currents or current measurements;
the transient voltage formula is:
（2）
in formula (2), wherein N represents the number of measurements;representing the sum of N voltage measurements; the output power value is:
（3）
as a further technical scheme of the invention, the first-order RL system comprises a resistor R, an inductor L and a currentiSum voltage U L Forming a closed loop, wherein the inductance calculation formula is as follows:
（4）
wherein by the formulaSolving t, t representing transient voltage or current response time, +.>Representing the data constant.
As a further technical scheme of the invention, the shielding cover is a magnetic material inductance shielding cover.
As a further technical scheme of the invention, the first magnetic core is a magnetic core with a common-mode inductance filter circuit, and the second magnetic core is an iron powder core magnetic ring inductance magnetic core.
As a further technical scheme of the invention, the electromagnetic anti-interference module comprises an anti-interference circuit, wherein the anti-interference circuit comprises an operational amplifier processing chip, a triode amplifying circuit, a diode cut-off circuit, a low-pass filter circuit, a signal emission conditioning circuit and an electromagnetic wave interference circuit which are connected with the operational amplifier processing chip, and the output end of the anti-interference circuit is also connected with a fully differential operational amplifier circuit so as to further improve noise interference.
As a further technical scheme of the invention, the fully differential operational amplifier circuit comprises a common mode detection module and an error amplifier.
The beneficial effects of the invention are as follows:
unlike conventional technology, the present invention discloses an inductor for an intelligent network-connected automobile, comprising: the electromagnetic anti-interference device comprises a shielding cover, a first winding, a second winding, a first magnetic core, a second magnetic core, an inductance measurement module and an electromagnetic anti-interference module, wherein the first winding and the second winding are arranged in parallel, the first winding and the second winding are arranged around the first magnetic core and the second magnetic core, the first magnetic core is sleeved outside the second magnetic core, the first magnetic core and the second magnetic core extend along the direction of an axis A, the shielding cover is arranged outside the first winding and the second winding, the inductance measurement module is arranged on the cross section of the first winding, and the electromagnetic anti-interference module is arranged inside the shielding cover; the multistage shielding can be realized through the structure setting, the output circuit is measured, the inductance measurement module realizes inductance measurement through STM32 series singlechip, wherein still be connected with FPGA measurement and control module for realize inductance measurement's real-time control. The FPGA measurement and control module comprises a power supply module, a comparator, a voltage divider, a turn number control module, a signal conditioning circuit, an isolation module and an inductance power calculation module, so that real-time control is realized, and the anti-interference calculation capability is improved through an electromagnetic anti-interference module based on an anti-interference circuit, a common mode detection module and an error amplifier.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, from which, without inventive faculty, other drawings can be obtained for a person skilled in the art, in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of an inductance measurement module according to the present invention;
FIG. 3 is a schematic diagram of the FPGA measurement and control module in the present invention;
FIG. 4 is a schematic diagram of a first-order RL system according to the invention;
FIG. 5 is a schematic diagram of an electromagnetic anti-interference module according to the present invention;
FIG. 6 is a schematic diagram of a fully differential operational amplifier circuit according to the present invention;
description of the drawings: 1-a shielding case; 2-shield cross section; 3-a first winding; 4-a second winding; 5-a first magnetic core; 6-a second magnetic core; 7-a first winding cross section; 8-an inductance measurement module; 9-an electromagnetic anti-interference module; an A-axis.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 1, an inductor for an intelligent network-connected automobile, comprising: the electromagnetic shielding device comprises a shielding case 1, a first winding 3, a second winding 4, a first magnetic core 5, a second magnetic core 6, an inductance measurement module 8 and an electromagnetic anti-interference module 9, wherein the first winding 3 and the second winding 4 are arranged in parallel, the first winding 3 and the second winding 4 are arranged around the first magnetic core 5 and the second magnetic core 6, the first magnetic core 5 is sleeved outside the second magnetic core 6, the first magnetic core 5 and the second magnetic core 6 extend along the direction of an axis A, the shielding case 1 is arranged outside the first winding 3 and the second winding 4, the inductance measurement module 8 is arranged on a first winding cross section 7 of the first winding 3, and the electromagnetic anti-interference module is arranged inside the shielding case 1.
In the above embodiment, the first winding 3 and the second winding 4 are coaxial cables or copper wires.
In a particular embodiment, a winding refers to a set of turns that make up an electrical circuit corresponding to a certain voltage value referenced by a transformer. The number of turns of each secondary winding is different, so that the terminal voltage is also different, and the multi-winding transformer can supply power to electric equipment with different voltages. The most common in power systems is a three-winding transformer. The internal configuration of the present invention can be seen in the shield cross section 2.
In the above embodiment, as shown in fig. 2, the inductance measurement module 8 includes an STM32 series single chip microcomputer and a measurement circuit, where the measurement circuit includes a first-order RL input circuit, a triode switch circuit, an operational amplifier circuit, a voltage dividing circuit, and a measurement output circuit, where an output end of the first-order RL input circuit is connected with an input end of the triode switch circuit, an output end of the triode switch circuit is connected with an input end of the operational amplifier circuit, the operational amplifier circuit is connected with the voltage dividing circuit, and an output end of the operational amplifier circuit is connected with the measurement output circuit. The first order RL system principle is shown in figure 4,U r in the form of a resistance voltage, the resistance voltage,Rin the form of a resistor, the resistor,iin the event of a current flow,Lin the case of an inductance,U L is the inductance voltage.
In a specific embodiment, wherein the resistor R 20 And inductance L 1 The series connection forms a first order RL system. P0.0 is connected with the singlechip through a current-limiting resistor, and the triode Q 1 The switch is controlled by the singlechip, and when P0.0 is low level, the triode Q 1 Turn-off, the voltage of the same phase terminal of the operational amplifier is 0V, when P0.0 is high level, the triode Q 1 On, the voltage of the same-phase end of the operational amplifier is 5V, namely, the same-phase end of the operational amplifier inputs a step signal with the amplitude of 5V approximately. Adjustable resistor R 16 The voltage division function is performed to set the voltage of the inverting terminal of the operational amplifier to beI.e. 1.703V. Since the operational amplifier operates in an open loop state, the operational amplifier outputs a high level when the zero time shown in fig. 4 arrives under the action of a step signal; when the time passes tot 1 The time op-amp outputs a low level. The output end of the operational amplifier is connected with the IO port of the singlechip. Under the control of STM32 series single-chip microcomputer, the technical scheme comprises a zero-time triode Q 1 Generating a step signal, outputting high level by the operational amplifier, starting timing by the singlechip, stopping timing by the singlechip when the level of the output end of the operational amplifier is detected to be low by the singlechip, and obtainingt 1 Is a numerical value of (2).
In the above embodiment, the inductance measurement module 8 realizes inductance measurement through an STM32 series single-chip microcomputer, and is further connected with an FPGA measurement and control module, for realizing real-time control of inductance measurement.
In the above embodiment, as shown in fig. 3, the FPGA measurement and control module includes a power module, a comparator, a voltage divider, a turn number control module, a signal conditioning circuit, an isolation module, and an inductance power calculation module. The inductance power calculation module comprises an FPGA main control module, an STM32 series singlechip, an external interface, a display module, a storage module and a DDS algorithm module, and finally the inductance power calculation module realizes inductance power calculation.
In a specific embodiment, the normal working voltage and current are provided through the power supply module, in a specific embodiment, the normal working voltage and current are realized through the FPGA main control chip and the peripheral design circuit, wherein when the FPGA performs power measurement, data information configuration can be completed in a short time, for example, configuration is completed in 10 ms in one embodiment, a Programmable Logic Device (PLD), a RAM, a flash memory, digital signal processing, a phase-locked loop and an I/O interface are integrated in a package of 3 mm by 3 mm, flexible configuration of the device is ensured, and the service life of 20 years can be ensured by adopting a 55 nm process technology of TSMC. The FPGA field programmable logic array development board consists of an FPGA chip, an SDRAM memory chip, a peripheral circuit, a clock module, a peripheral expansion interface and the like.
In a further embodiment, the collection of inductance data information is achieved by a comparator, which in one embodiment employs a dual core structure, wherein core a is made of a high permeability soft magnetic material and core B is made of a low permeability ferrite material. The double-iron-core structure enables odd harmonic components induced in the iron cores to cancel each other, even harmonic components are mutually reinforced, and even harmonic components favorable for the magnitude of a reaction signal can be extracted. The square wave oscillator is connected with an excitation winding which is independently wound on the iron core A, and the detection winding Ws and the balance winding W 2 Winding on double iron cores, winding W to be measured 1 Through the double iron cores, the comparison and measurement of data information are realized in this way.
Under the control of STM32 series single chip microcomputer, the control of the FPGA main control module on the number of turns cannot be realized, after the data information is output through a comparator, the data information voltage division is realized through a voltage divider, the number of turns of inductor data is changed through a turn control module, the data information is conditioned through a signal conditioning circuit, the data information isolation is realized through an isolation module, the power data information calculation is realized through an inductance power calculation module,
in the above embodiment, the inductance power calculation module formula is implemented by transient current and transient voltage:
the inductive power calculation module formula is realized through transient current and transient voltage:
the output transient current formula is:
（1）
in formula (1), wherein N represents the number of measurements;a transient current or a number of pulses through which the transient current flows;representing the sum of N current measurements; i represents all currents or current measurements;
the transient voltage formula is:
（2）
in formula (2), wherein N represents the number of measurements;representing the sum of N voltage measurements; the output power value is:
（3）
in the above embodiment, the first-order RL system includes a resistor R, an inductor L, and an electric circuitFlow ofiSum voltage U L Forming a closed loop, wherein the inductance calculation formula is as follows:
（4）
wherein by the formulaSolving t, t representing transient voltage or current response time, +.>Representing the data constant.
In the above embodiment, the shield case 1 is a magnetic material inductance shield case.
In the above embodiment, the first magnetic core 5 is a magnetic core with a common-mode inductance filter circuit, and the second magnetic core 6 is an iron powder magnetic ring inductance magnetic core.
In a specific embodiment, the coils are wound on the same core with the same number of turns and phase (winding reversal). When common mode current flows through the coil, the common mode current generates a magnetic field in the same direction to increase the inductance of the coil, so that the coil presents high impedance and generates stronger damping effect, thereby attenuating the common mode current and achieving the purpose of filtering.
In a specific embodiment, the inductor coil is a device that operates using the principles of electromagnetic induction. When a current flows through a wire, a certain electromagnetic field is generated around the wire, and the wire itself of the electromagnetic field can induce a wire within the range of the electromagnetic field. The effect that occurs on the wire itself that generates the electromagnetic field is called "self-inductance", i.e. the changing current generated by the wire itself generates a changing magnetic field that in turn further affects the current in the wire. The effect on other wires in this electromagnetic field range is called "mutual inductance". The magnitude of the inductance of the coil is related to the presence or absence of the magnetic core. The ferrite core is inserted into the air core coil, so that the inductance can be increased and the quality factor of the coil can be improved.
In the above embodiment, as shown in fig. 5, the electromagnetic anti-interference module 9 includes an anti-interference circuit, where the anti-interference circuit includes an operational amplifier processing chip, a triode amplifying circuit, a diode cut-off circuit, and a low-pass filter circuit, a signal emission conditioning circuit, and an electromagnetic interference circuit connected to the operational amplifier processing chip, and an output end of the anti-interference circuit is further connected to a fully differential operational amplifier circuit to further improve noise interference.
The fully differential operational amplifier circuit includes a common mode detection module and an error amplifier.
As shown in fig. 6, the impedanceBy->And->Providing, impedance->By->And->Providing that the common mode detection module consists of +.>And->Constitution (S)>And->The connected node potential is +.>。/>、/>、/>An error amplifier is formed, the output end of which is connected to the main operational amplifier>At the node. The common mode feedback node is used for controlling a load current source, preventing current from entering a linear region in the process of initially adjusting the common mode potential, and avoiding positive feedback to play a leading role. And enabling the output common-mode potential to be equal to the set common-mode voltage, and eliminating noise influence of the peak gain amplifier band.
While specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are by way of example only, and that various omissions, substitutions, and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is limited only by the following claims.

Claims (6)

1. An inductor for an intelligent network-connected vehicle, characterized by: comprising the following steps:
the electromagnetic shielding device comprises a shielding case (1), a first winding (3), a second winding (4), a first magnetic core (5), a second magnetic core (6), an inductance measurement module (8) and an electromagnetic anti-interference module (9), wherein the first winding (3) and the second winding (4) are arranged in parallel, the first winding (3) and the second winding (4) are arranged around the first magnetic core (5) and the second magnetic core (6), the first magnetic core (5) is sleeved outside the second magnetic core (6), the first magnetic core (5) and the second magnetic core (6) extend along the direction perpendicular to the axis A of the cross section (2) of the shielding case, the shielding case (1) is arranged outside the first winding (3) and the second winding (4), the inductance measurement module (8) is arranged on the first winding cross section (7) of the first winding (3), and the electromagnetic anti-interference module is arranged inside the shielding case (1);
the inductance measurement module (8) comprises an STM32 series singlechip and a measurement circuit, wherein the measurement circuit comprises a first-order RL input circuit, a triode switch circuit, an operational amplification circuit, a voltage division circuit and a measurement output circuit, the output end of the first-order RL input circuit is connected with the input end of the triode switch circuit, the output end of the triode switch circuit is connected with the input end of the operational amplification circuit, the operational amplification circuit is connected with the voltage division circuit, and the output end of the operational amplification circuit is connected with the measurement output circuit;
the inductance measurement module (8) is used for realizing inductance measurement through an STM32 series singlechip, and is also connected with an FPGA measurement and control module for realizing real-time control of inductance measurement;
the FPGA measurement and control module comprises a power supply module, a comparator, a voltage divider, a turn number control module, a signal conditioning circuit, an isolation module and an inductance power calculation module.
2. An inductor for an intelligent network-connected vehicle as claimed in claim 1, wherein: the first winding (3) and the second winding (4) are coaxial cables or copper wires.
3. An inductor for an intelligent network-connected vehicle as claimed in claim 1, wherein: the shielding cover (1) is a magnetic material inductance shielding cover.
4. An inductor for an intelligent network-connected vehicle as claimed in claim 1, wherein: the first magnetic core (5) is a magnetic core with a common-mode inductance filter circuit, and the second magnetic core (6) is an iron powder magnetic ring inductance magnetic core.
5. An inductor for an intelligent network-connected vehicle as claimed in claim 1, wherein: the electromagnetic anti-interference module (9) comprises an anti-interference circuit, wherein the anti-interference circuit comprises an operational amplifier processing chip, a triode amplifying circuit, a diode cut-off circuit, and a low-pass filter circuit, a signal emission conditioning circuit and an electromagnetic wave interference circuit which are connected with the operational amplifier processing chip, and the output end of the anti-interference circuit is also connected with a full-differential operational amplifier circuit.
6. An inductor for an intelligent network-connected vehicle as claimed in claim 5, wherein: the fully differential operational amplifier circuit includes a common mode detection module and an error amplifier.
CN202310569006.XA 2023-05-19 2023-05-19 Inductor for intelligent network-connected automobile Active CN116313432B (en)

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