High-efficiency energy-saving ignition coil

By designing a combination of a horizontally placed "日"-shaped iron core and a C-shaped structure, the shortcomings of traditional ignition coils in terms of energy conversion efficiency and ignition energy output are solved, resulting in a high-efficiency and energy-saving ignition coil suitable for the high-efficiency combustion and energy-saving requirements of modern engines.

CN224342161UActive Publication Date: 2026-06-09WENZHOU MINJO AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU MINJO AUTO PARTS CO LTD
Filing Date
2025-06-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional ignition coils are inadequate in terms of energy conversion efficiency, ignition energy output, and adaptability to complex operating conditions, and cannot meet the requirements of efficient combustion and energy saving in modern engines.

Method used

A high-efficiency and energy-saving ignition coil was designed, which adopts a combination of a horizontally placed "日"-shaped iron core and a C-shaped structure to reduce magnetic line loss and generate resonance through capacitor to improve ignition intensity and start-up speed.

Benefits of technology

It achieves a smaller size and higher energy conversion efficiency, improves ignition intensity and start-up speed, saves fuel, and reduces material usage and pollution.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224342161U_ABST
    Figure CN224342161U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of ignition coil, specifically relates to high -efficient energy -saving type ignition coil, including the shell, the inside of shell is provided with coil assembly, including the core and the framework that sets up in the core in coil assembly, the inside of core is the 'Ri' shape of horizontal placement, and one end of core is fixedly connected with the contact piece, and the front end of framework is inserted in the inside of core, due to the structure form after combination, the magnetic line of force of two C core sticking place is easy to scatter to both sides, reduces to cause unnecessary loss, the device is more with prior art structure, and the core volume is smaller, and the core of C type can cross arrangement when stamping, save material more. It is suitable for batch production assembly, and product structure is unified standard, and the capacitor in the coil can produce resonance, improve ignition intensity, start fast, save fuel, reduce pollution, the product structure is simple, and the universality is strong, and it is convenient to install.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of ignition coils, in particular to an efficient energy-saving ignition coil. Background Art

[0002] In an automotive ignition system, as a core component, the ignition coil is responsible for converting the low voltage provided by the vehicle battery (generally 12 volts) into a high voltage (usually tens of thousands of volts) to generate a spark to ignite the fuel mixture in the engine cylinder. Traditional ignition coils mainly have two types: open magnetic type and closed magnetic type. The open magnetic type ignition coil generally has a can-like structure. Its iron core is composed of several silicon steel sheets laminated into a rod shape. The primary coil is wound outside the secondary coil. During operation, there is more magnetic leakage, greater energy loss, and it is difficult to achieve miniaturization due to the large magnetic resistance. The closed magnetic type ignition coil has a closed iron core, and all magnetic fluxes pass through the inside of the iron core. It has a small magnetic resistance, can effectively reduce the coil magnetomotive force, achieve miniaturization, and has less magnetic leakage and less energy loss. Therefore, it is widely used in electronic ignition systems. However, whether it is an open magnetic type or a closed magnetic type traditional ignition coil, when facing the continuously increasing performance requirements of modern engines, some limitations have gradually emerged.

[0003] When facing these new challenges, traditional ignition coils show deficiencies in aspects such as energy conversion efficiency, ignition energy output, and adaptation to complex working conditions, and cannot well match the requirements of modern engines for efficient combustion and energy conservation. Content of the Utility Model

[0004] Technical Problem to be Solved

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides an efficient energy-saving ignition coil, which can effectively solve the problems in the prior art.

[0006] Technical Solution

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0008] The utility model provides an efficient energy-saving ignition coil, including a housing. Inside the housing, there is a coil assembly. The coil assembly includes an iron core and a bobbin disposed inside the iron core. The inside of the iron core is in a horizontally placed "day" shape, and one end of the iron core is fixedly connected to a contact piece. The front end of the bobbin is inserted into the inside of the iron core.

[0009] Furthermore, the end of the bobbin is fixedly connected to a positioning plate, and the contact piece is fixed inside the positioning plate.

[0010] Furthermore, the front end of the bobbin is of two groups of C-shaped structures.

[0011] Furthermore, the iron core consists of a voltage level, a low-voltage coil, a high-voltage coil, and a capacitor. The voltage level is 12V. The positive terminal is connected to a transformer consisting of a primary coil N1 and a high-voltage coil N2. The voltage enters from the primary coil N1 into the high-voltage coil N2. One high-voltage output is connected to a distributor; the other is connected to the vehicle ground wire through a capacitor.

[0012] Furthermore, the end of the contact piece is located on the outside of the housing.

[0013] Furthermore, the bottom end of the housing is connected and fixed to the bottom rod, and the core structure in the middle of the iron core is a spindle shape with large sides and a small middle.

[0014] The technical solution provided by this utility model has the following advantages compared with the known public technology:

[0015] This invention utilizes a combined structure of coil assembly and housing. The iron core structure is divided into two C-shaped structures in the middle, with a spindle structure in the center. Due to the combined structure, the magnetic lines of force at the contact point of the two C-shaped iron cores are easily dispersed to both sides, reducing unnecessary losses. Compared with existing structures, this device has a smaller iron core volume, and the C-shaped iron cores can be arranged in a crisscross pattern during stamping, saving materials. It is suitable for mass production and assembly, ensuring a standardized product structure. Simultaneously, the capacitor within the coil can generate resonance, improving ignition intensity, accelerating start-up, saving fuel, and reducing pollution. This product has a simple structure, strong versatility, and is easy to install.

[0016] In this device, two sets of C-shaped structures are set at the front end of the frame and inserted into the iron core. The positioning plate is clamped on the outside of the iron core, and the contact piece is electrically connected to the external structure to form a stable fixed structure, which facilitates installation and fixation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 This is an exploded view of the structure of this utility model;

[0021] Figure 4 This is an exploded view of the coil assembly in this utility model;

[0022] Figure 5 This is a schematic diagram of the magnetic flux flow direction of the present utility model;

[0023] Figure 6 This is the circuit diagram of the battery cell in the present utility model.

[0024] The reference numerals in the figure respectively represent: 1. housing; 2. coil assembly; 21. iron core; 22. skeleton; 23. contact piece; 24. positioning plate; 3. bottom rod. Specific embodiments

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] The present utility model will be further described below with reference to the embodiments.

[0027] Embodiment: An energy-efficient ignition coil, referring to the attached Figure 1 - attached Figure 6 , including a housing 1, wherein a coil assembly 2 is arranged inside the housing 1. The coil assembly 2 includes an iron core 21 and a skeleton 22 arranged inside the iron core 21. The inside of the iron core 21 is in a horizontally placed "day" shape, and one end of the iron core 21 is fixedly connected to a contact piece 23, and the front end of the skeleton 22 is inserted inside the iron core 21;

[0028] The end of the skeleton 22 is fixedly connected to a positioning plate 24, and the contact piece 23 is fixed inside the positioning plate 24. In this device, two groups of C-shaped structures arranged at the front end of the skeleton 22 are inserted inside the iron core 21, the positioning plate 24 is clamped outside the iron core 21, and the contact piece 23 is kept in electrical connection with the external structure, forming a stable fixing structure, which is convenient for installation and fixation.

[0029] The front end of the frame 22 has two sets of C-shaped structures; the iron core 21 consists of a voltage level, a low-voltage coil, a high-voltage coil, and a capacitor. The voltage level is 12V, and the positive terminal is connected to a transformer composed of a primary coil N1 and a high-voltage coil N2. The high-voltage coil N1 enters the high-voltage coil N2, and one high-voltage outlet is connected to a distributor; the other is connected to the vehicle ground wire through a capacitor; the end of the contact piece 23 is located on the outside of the housing 1; the bottom end of the housing 1 is connected and fixed to the bottom rod 3, and the iron core 21 in the middle has a spindle shape with larger sides and a smaller middle; the combined structure of the coil assembly 2 and the housing 1, wherein the iron core 21 structure is divided into two sets of C-shaped structures by the middle structure, with the middle being a spindle structure. Due to the combined structure, the magnetic lines of force at the joint of the two C-shaped iron cores 21 are easily dispersed to both sides, reducing unnecessary losses. Compared with the existing structure, the iron core 21 of this device is smaller in volume, and the C-shaped iron cores 21 can be arranged in a cross pattern during stamping, saving more materials. Suitable for mass production and assembly, the product has a standardized and uniform structure. At the same time, the capacitor in the coil can generate resonance, which improves the ignition intensity, speed of start-up, saves fuel, and reduces pollution. The product has a simple structure, strong versatility, and is easy to install.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.