WO2023123557A1 - 电磁干扰抑制笔式点火线圈 - Google Patents

电磁干扰抑制笔式点火线圈 Download PDF

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Publication number
WO2023123557A1
WO2023123557A1 PCT/CN2022/071472 CN2022071472W WO2023123557A1 WO 2023123557 A1 WO2023123557 A1 WO 2023123557A1 CN 2022071472 W CN2022071472 W CN 2022071472W WO 2023123557 A1 WO2023123557 A1 WO 2023123557A1
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WIPO (PCT)
Prior art keywords
voltage
electromagnetic interference
ignition coil
pen
type ignition
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PCT/CN2022/071472
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English (en)
French (fr)
Inventor
童彬
姜建华
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昆山凯迪汽车电器有限公司
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Publication of WO2023123557A1 publication Critical patent/WO2023123557A1/zh

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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
    • H01F27/34—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • 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
    • 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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F2027/297—Terminals; Tapping arrangements for signal inductances with pin-like terminal to be inserted in hole of printed path

Definitions

  • the invention relates to an ignition coil for automobiles.
  • the object of the present invention is to provide an electromagnetic interference suppressing pen type ignition coil which can reduce the electromagnetic interference effect of the ignition coil on the outside under working conditions.
  • an electromagnetic interference suppression pen type ignition coil including a casing, a magnetic sleeve arranged outside the casing, a coil assembly arranged inside the casing, The high-voltage sheath arranged at the lower end of the shell, and the low-voltage head arranged at the upper end of the shell; wherein, the high-voltage sheath is provided with a suppressing resistor, a negative high-voltage cap, and a high-voltage spring, and the suppressing resistor One end is connected to the high-voltage spring through a negative high-voltage cap, and the other end is connected to the secondary high-voltage end of the coil assembly; the low-voltage head is provided with a grounding pin, a high-voltage diode and a filter capacitor, and the high-voltage One end of the diode is connected to the secondary low-voltage end of the coil assembly, the other end is connected to the ground pin, one end of the filter capacitor is connected
  • a bracket is arranged inside the low voltage head, and a diode positioning block is arranged on the bracket, and the high voltage diode is fixed between the diode positioning blocks.
  • the working voltage of the high voltage diode is 3kV.
  • the low pressure head is provided with a capacitor positioning groove, and the filter capacitor is arranged in the capacitor positioning groove.
  • the filter capacitor is a 1 ⁇ F, 100V film capacitor.
  • the suppression resistor is connected to the secondary high-voltage end of the coil assembly through a secondary plum blossom tab.
  • the suppressing resistor is a wire-wound suppressing resistor of 2.5 k ⁇ , 20 ⁇ H to 30 ⁇ H.
  • the bottom of the high-voltage sheath is connected with a cylinder head cover sealing ring.
  • the coil assembly includes an iron core, a secondary frame sheathed outside the iron core, a secondary winding wound on the secondary frame, a secondary The primary skeleton outside the skeleton, and the primary winding wound on the primary skeleton.
  • the primary skeleton is provided with PI adhesive tape.
  • the present invention can reduce the influence of electromagnetic interference generated by the ignition coil on the outside under working conditions, and weld the buckle on the magnetic sleeve and the grounding pin together by laser welding to ensure that the ignition coil is in use. It remains solid and reliable for a long time and improves product performance.
  • Figure 6 depicts the high voltage diode of the EMI suppression pen ignition coil according to the present invention.
  • Figure 7 depicts the positioning of the bracket and coil assembly of the electromagnetic interference suppression pen ignition coil according to the present invention.
  • Figure 9 depicts the connection of the suppression resistors of the EMI suppression pen ignition coil according to the present invention.
  • the invention adopts multiple electromagnetic interference suppression designs in a high-performance pen-type ignition coil to reduce the negative impact of the ignition coil on the outside at the moment of ignition, and requires the ignition coil to be connected to the coil power line when it is in working condition.
  • B+ The generated coupled pulse voltage range is controlled within [-50V, +100V] within range.
  • the electromagnetic interference suppression pen type ignition coil in this embodiment includes a shell 1 , set in the shell 1 External magnetic sleeve 2 , set in the shell 1 Internal coil assembly, set in the housing 1 High voltage sheath at the lower end 3 , set in the shell 1 upper low pressure head 4 .
  • Coil assembly including core 5 , set in the iron core 5 external secondary frame 6 , wound on the secondary bobbin 6
  • High voltage sheath 3 built-in suppression resistor 9 , Negative high voltage cap 10 , high pressure spring 11 , the suppression resistance 9
  • One end of the negative high voltage cap through the 10 with high pressure spring 11 connection, the other end is connected to the secondary high voltage end of the coil assembly; high voltage sheath 3
  • the bottom is connected to the spark plug, the high voltage sheath 3 Set the cylinder head cover sealing ring between the spark plug and the spark plug 12 .
  • Attached picture 4 and attached 5 It is a partial sectional enlarged view of electromagnetic interference suppression pen type ignition coil according to the present invention; low pressure head 4 built-in bracket 13 , ground pin 14 , high voltage diode 15 and filter capacitor 16 , high voltage diode 15 One end is connected to the secondary low-voltage end of the coil assembly, and the other end is connected to the ground pin 14 , filter capacitor 16 One end is connected to the secondary high voltage end of the coil assembly, and the other end is connected to the ground pin 14 , magnetic sleeve 2 There is a buckle on the 17 , ground pin 14 Extend down and press fit on the buckle 17 In and with the magnetic sleeve 2 Laser welded together to ensure that the ignition coil remains firm and reliable for a long time during use, and the solid and reliable magnetic sleeve is connected to the grounding pin to reduce the impact on the power line when the coil is working B+ The resulting coupling pulse voltage disturbance is critical.
  • Low pressure head 4 rotatable mounted cover 18 low head 4 set with cover 18 matching latch 19 , lock 19 supported on the cover 18 on, secure cover 18 It is in a vertical direction before loading, which is convenient for plug installation; after the wiring harness plug and coil plug are assembled, the lock 19 locked in cover 18 on, secure cover 18 horizontally to lock the harness connector.
  • brackets 13 The bottom is provided with fixed terminals 20 , the top of the coil assembly is provided with a positioning groove twenty one , bracket 13 via fixed terminals 20 Set in the positioning slot twenty one Inside.
  • bracket 13 Diode positioning block is set on the twenty two , where a pair of high voltage diodes are located 15 on both sides of the high-voltage diode 15 the lower side of the high voltage diode 15 Fixed to the diode positioning block twenty two between. High voltage diode 15 One pole extends downward and connects to the secondary low-voltage terminal, and the other pole extends upward and connects to the ground pin 14 . lock 19 Insert the diode retainer down vertically twenty two on, the high voltage diode can be vertically 15 The positioning is formed to ensure the reliability of the coil under vibration conditions.
  • the high-voltage diode adopts an operating voltage of 3kV Sanken high voltage diodes.
  • Attached picture 8 EMI suppression pen ignition coil filter capacitor according to the invention is described, low head 4 Equipped with a capacitor positioning slot twenty four , filter capacitor 16 Set in the capacitor positioning slot twenty four Inside, the filter capacitor 16 in the high voltage diode 15 above.
  • the filter capacitor adopts 1 mu f , 100V Xiamen Farah Electronic Film Capacitors.
  • Attached picture 9 The connection of the suppression resistor of the electromagnetic interference suppression pen ignition coil according to the invention is described; the suppression resistor 9 by Secondary Plum Cuttings twenty three Connect to the secondary high voltage side of the coil assembly. Suppression resistance 9 Using Shanghai Carat Electronics 2.5k ⁇ , 20 mu h ⁇ 30 mu h wirewound suppression resistors.
  • Attached picture 10 It is the working principle diagram of electromagnetic interference suppression pen type ignition coil according to the present invention, accompanying drawing 11 Power lines captured when the coil fires for an engine no-load condition during a full-vehicle test B+ Coupling pulse voltage waveform and spark plug breakdown voltage waveform. When the vehicle is unloaded, the coil ignites instantly on the power line B+ Comparison of the measured coupling pulse voltage test results: the test results under the vehicle's no-load condition show that multiple suppression measures can effectively reduce the ignition coil's impact on the power line at the moment of ignition.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

一种可降低点火线圈在工作状况下对外界产生的电磁干扰抑制笔式点火线圈，包括外壳、设置在外壳外部的导磁套、设置在外壳内部的线圈组件、设置在外壳下端的高压护套、设置在外壳上端的低压头；其中，高压护套内设置有抑制电阻、负高压帽、高压弹簧，抑制电阻的一端通过负高压帽与高压弹簧连接，另一端连接于线圈组件的次级高压端；低压头内设置有接地插针、高压二极管和滤波电容，高压二极管的一端连接于线圈组件的次级低压端，另一端连接于接地插针，滤波电容的一端于线圈组件的次级高压端，另一端与接地片连接于接地插针，接地插针和导磁套激光焊接在一起。

Description

电磁干扰抑制笔式点火线圈 技术领域
本发明涉及一种汽车用点火线圈。
 背景技术
随着发动机厂对发动机性能要求的提高，涡轮增压发动机在国内被很多整车厂广泛使用。较高的发动机动力性能需要点火系统提供大点火能量和高次级输出电压的点火线圈来满足发动机在各种工况下的燃烧要求，整车厂对点火线圈输出特性要求的提高同时也增加了点火线圈工作时对外界产生的负面影响，在电源线B+上产生的耦合脉冲电压的电磁干扰，若点火线圈在工作时在电源线B+产生较大的耦合脉冲电压，则可能影响附近电子部件的正常工作如传感器，电子调节器等。国际电工组织IEC和国际标准组织ISO对汽车零部件产生的电磁干扰和抗电磁干扰的能力有严格的要求。要同时满足涡轮增压发动机对点火线圈高性能的要求和满足IEC CISPR25、ISO 7637-2电磁干扰要求，点火线圈供应商在点火线圈开发阶段必须增加一些额外的抑制措施。
 技术问题
为了解决现有技术中的问题，本发明的目的是提供一种可降低点火线圈在工作状况下对外界产生的电磁干扰影响的电磁干扰抑制笔式点火线圈。
 技术解决方案
为了达到上述目的，本发明所采用的技术方案是：一种电磁干扰抑制笔式点火线圈，包括外壳、设置在所述的外壳外部的导磁套、设置在所述的外壳内部的线圈组件、设置在所述的外壳下端的高压护套、设置在所述的外壳上端的低压头；其中，所述的高压护套内设置有抑制电阻、负高压帽、高压弹簧，所述的抑制电阻的一端通过负高压帽与所述的高压弹簧连接，另一端连接于所述的线圈组件的次级高压端；所述的低压头内设置有接地插针、高压二极管和滤波电容，所述的高压二极管的一端连接于所述的线圈组件的次级低压端，另一端连接于所述的接地插针，所述的滤波电容的一端连接于所述的线圈组件的次级高压端，另一端连接于所述的接地插针，所述的接地插针和导磁套激光焊接在一起。
优选的，所述的低压头内设置有支架，所述的支架上设置有二极管定位块，所述的高压二极管固定于所述的二极管定位块之间。
优选的，所述的高压二极管的工作电压为3kV。
优选的，所述的低压头设置有电容定位槽，所述的滤波电容设置于所述的电容定位槽内。
优选的，所述的滤波电容为1μF，100V的薄膜电容。
优选的，所述的抑制电阻通过次级梅花插片连接于所述的线圈组件的次级高压端。
优选的，所述的抑制电阻为2.5kΩ，20μH～30μH的绕线型抑制电阻。
优选的，所述的高压护套的底部连接有缸盖罩密封圈。
优选的，所述的线圈组件包括铁芯、套设在所述的铁芯外部的次级骨架、绕制在所述的次级骨架上的次级绕线、套设在所述的次级骨架外部的初级骨架、绕制在所述的初级骨架上的初级绕线。
优选的，所述的初级骨架上设置有PI胶带。
 有益效果
由于采用了以上技术方案，使得本发明可降低点火线圈在工作状况下对外界产生的电磁干扰影响，用激光焊接方式将导磁套上卡扣和接地插针焊接在一起确保点火线圈使用过程中长期保持牢固可靠，并且提升了产品性能。
 附图说明
附图1为根据本发明的电磁干扰抑制笔式点火线圈的立体图。
附图2为根据本发明的电磁干扰抑制笔式点火线圈的立体拆分图。
附图3为根据本发明的电磁干扰抑制笔式点火线圈的剖视图。
附图4和附图5为根据本发明的电磁干扰抑制笔式点火线圈的局部剖视放大图。
附图6描述了根据本发明的电磁干扰抑制笔式点火线圈的高压二极管。
附图7描述了根据本发明的电磁干扰抑制笔式点火线圈的支架与线圈组件的定位。
附图8描述了根据本发明的电磁干扰抑制笔式点火线圈的滤波电容。
附图9描述了根据本发明的电磁干扰抑制笔式点火线圈的抑制电阻的连接。
附图10为根据本发明的电磁干扰抑制笔式点火线圈的工作原理图。
附图11为整车测试时发动机空载状况线圈点火时捕捉的电源线B+耦合脉冲电压波形和火花塞击穿电压波形。
 本发明的最佳实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
本发明在一款高性能笔式点火线圈中采用多重抑制电磁干扰设计来降低点火线圈在点火瞬间对外界产生的负面影响，要求点火线圈在工作状况时在线圈电源线 B+ 产生的耦合脉冲电压范围控制在 [-50V, +100V] 范围内。经过大量的实验室测试和整车测试，以及对测试数据的整理分析，最终确定实施方案如下。
参见附图 1 至附图 3 所示，附图 1 为根据本发明的电磁干扰抑制笔式点火线圈的立体图，附图 2 为根据本发明的电磁干扰抑制笔式点火线圈的立体拆分图，附图 3 为根据本发明的电磁干扰抑制笔式点火线圈的剖视图。本实施例中的电磁干扰抑制笔式点火线圈，包括外壳 1 、设置在外壳 1 外部的导磁套 2 、设置在外壳 1 内部的线圈组件、设置在外壳 1 下端的高压护套 3 、设置在外壳 1 上端的低压头 4 。
线圈组件包括铁芯 5 、套设在铁芯 5 外部的次级骨架 6 、绕制在次级骨架 6 上的次级绕线、套设在次级骨架 6 外部的初级骨架 7 、绕制在初级骨架 7 上的初级绕线，初级骨架 7 上设置有 PI 胶带 8 。
高压护套 3 内设置有抑制电阻 9 、负高压帽 10 、高压弹簧 11 ，抑制电阻 9 的一端通过负高压帽 10 与高压弹簧 11 连接，另一端连接于线圈组件的次级高压端；高压护套 3 的底部连接于火花塞，高压护套 3 与火花塞之间设置缸盖罩密封圈 12 。
附图 4 和附图 5 为根据本发明的电磁干扰抑制笔式点火线圈的局部剖视放大图；低压头 4 内设置有支架 13 、接地插针 14 、高压二极管 15 和滤波电容 16 ，高压二极管 15 的一端连接于线圈组件的次级低压端，另一端连接于接地插针 14 ，滤波电容 16 的一端连接于线圈组件的次级高压端，另一端连接于接地插针 14 ，导磁套 2 上设置有卡扣 17 ，接地插针 14 向下延伸后压装在卡扣 17 中并与导磁套 2 激光焊接在一起，确保点火线圈使用过程中长期保持牢固可靠，牢固可靠的导磁套与接地插针连接对降低线圈在工作时对电源线 B+ 产生的耦合脉冲电压干扰至关重要。
低压头 4 上可转动的安装有罩盖 18 ，低压头 4 上设置有与罩盖 18 相配合的锁扣 19 ，锁扣 19 支撑在罩盖 18 上，保证罩盖 18 在装车前处于垂直方向，便于插头安装；在线束插头与线圈插头装配后，锁扣 19 锁定在罩盖 18 上，保证罩盖 18 水平方向以锁定线束插头。
附图 6 描述了根据本发明的电磁干扰抑制笔式点火线圈的高压二极管；支架 13 的底部设置有固定端子 20 ，线圈组件的顶端设置有定位槽 21 ，支架 13 通过固定端子 20 设置在定位槽 21 内。
附图 7 描述了根据本发明的电磁干扰抑制笔式点火线圈的支架与线圈组件的定位；支架 13 上设置有二极管定位块 22 ，其中一对位于高压二极管 15 的两侧，另外一个位于高压二极管 15 的下端，高压二极管 15 固定于二极管定位块 22 之间。高压二极管 15 的一极向下延伸与次级低压端连接，另一极向上延伸并连接于接地插针 14 。锁扣 19 沿竖直方向向下插入二极管定位块 22 上，可以在纵向对高压二极管 15 形成定位，保证线圈在振动情况下的可靠性。高压二极管采用工作电压为 3kV 的三肯高压二极管。
附图 8 描述了根据本发明的电磁干扰抑制笔式点火线圈的滤波电容，低压头 4 设置有电容定位槽 24 ，滤波电容 16 设置于电容定位槽 24 内，滤波电容 16 位于高压二极管 15 的上方。滤波电容采用 1 μ F ， 100V 的厦门法拉电子薄膜电容。
附图 9 描述了根据本发明的电磁干扰抑制笔式点火线圈的抑制电阻的连接；抑制电阻 9 通过次级梅花插片 23 连接于线圈组件的次级高压端。抑制电阻 9 采用上海克拉电子 2.5k Ω， 20 μ H ～ 30 μ H 的绕线型抑制电阻。
附图 10 为根据本发明的电磁干扰抑制笔式点火线圈的工作原理图，附图 11 为整车测试时发动机空载状况线圈点火时捕捉的电源线 B+ 耦合脉冲电压波形和火花塞击穿电压波形。整车空载状况下线圈点火瞬间在电源线 B+ 测量到的耦合脉冲电压测试结果比较：整车空载状况下测试结果显示多重抑制措施可有效地降低点火线圈在点火瞬间对电源线 B+ 产生耦合脉冲电压影响，能够满足客户的要求将耦合脉冲电压控制在 [-50V, +100V] 范围内；然而只采用一个 3kV 高压二极管的简易抑制方法在电源线 B+ 上产生的耦合脉冲电压远远超过客户的要求。
Figure 956738dest_path_image001
。
表 1 为发动机空载状况下线圈点火瞬间在电源线 B+ 上测量的最大耦合脉冲电压和火花塞间隙最大击穿电压。可以看到，本发明可有效的降低点火线圈在工作状况下对外界产生的电磁干扰影响，通过罩盖锁定线束插头的设计保证了长期使用过程中信号的性能的稳定，用激光焊接方式将导磁套上卡扣和接地插针焊接在一起确保点火线圈使用过程中长期保持牢固可靠，并且提升了产品性能。
以上实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (10)

  1. 一种电磁干扰抑制笔式点火线圈，其特征在于：包括外壳、设置在所述的外壳外部的导磁套、设置在所述的外壳内部的线圈组件、设置在所述的外壳下端的高压护套、设置在所述的外壳上端的低压头；其中，
    所述的高压护套内设置有抑制电阻、负高压帽、高压弹簧，所述的抑制电阻的一端通过负高压帽与所述的高压弹簧连接，另一端连接于所述的线圈组件的次级高压端；
    所述的低压头内设置有接地插针、高压二极管和滤波电容，所述的高压二极管的一端连接于所述的线圈组件的次级低压端，另一端连接于所述的接地插针，所述的滤波电容的一端连接于所述的线圈组件的次级高压端，另一端连接于所述的接地插针，所述的接地插针和导磁套激光焊接在一起。
  2. 根据权利要求1所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的低压头内设置有支架，所述的支架上设置有二极管定位块，所述的高压二极管固定于所述的二极管定位块之间。
  3. 根据权利要求2所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的高压二极管的工作电压为3kV。
  4. 根据权利要求1所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的低压头设置有电容定位槽，所述的滤波电容设置于所述的电容定位槽内。
  5. 根据权利要求4所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的滤波电容为1μF，100V的薄膜电容。
  6. 根据权利要求1所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的抑制电阻通过次级梅花插片连接于所述的线圈组件的次级高压端。
  7. 根据权利要求6所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的抑制电阻为2.5kΩ，20μH～30μH的绕线型抑制电阻。
  8. 根据权利要求1所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的高压护套的底部连接有缸盖罩密封圈。
  9. 根据权利要求1所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的线圈组件包括铁芯、套设在所述的铁芯外部的次级骨架、绕制在所述的次级骨架上的次级绕线、套设在所述的次级骨架外部的初级骨架、绕制在所述的初级骨架上的初级绕线。
  10. 根据权利要求9所述的电磁干扰抑制笔式点火线圈，其特征在于：所述的初级骨架上设置有PI胶带。
PCT/CN2022/071472 2021-12-31 2022-01-11 电磁干扰抑制笔式点火线圈 WO2023123557A1 (zh)

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CN114360875A (zh) * 2021-12-31 2022-04-15 昆山凯迪汽车电器有限公司 抗电磁干扰笔式点火线圈
CN114360876A (zh) * 2021-12-31 2022-04-15 昆山凯迪汽车电器有限公司 多重电磁干扰抑制笔式点火线圈

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