Ignition coil core structure

Abstract

The utility model relates to an ignition coil structure of an automobile. An iron core structure of an ignition coil, including casing, is provided with accommodating groove on the casing, and the iron core assembly is installed in the accommodating groove, the iron core assembly includes central iron core and side edge iron core at both sides of central iron core, and the additional sheet is installed on at least one of the top or the bottom of side edge iron core, and the number n of additional sheet is greater than or equal to 1. The utility model provides an iron core structure of an ignition coil which has simple structure, greater energy conversion efficiency under the same volume, good flexibility, low cost and can satisfy the performance requirement of the diversity of customers, and solves the technical problem of single structure and low product performance of the ignition coil in the prior art.

Description

Technical Field

[0001] This utility model relates to an ignition coil structure for automobiles, and more particularly to an iron core structure for an ignition coil. Background Technology

[0002] The function of the iron core in an automotive ignition coil is to store energy and strengthen the magnetic field. In existing technology, to facilitate mold processing and dimensional inspection, the outer dimensions of the iron core must remain constant. Conventional iron core structures are very standardized, consisting of a C-shaped core and a T-shaped core forming a closed loop through two mating surfaces. The coil is then wound around the outside, and the entire core structure is placed inside a housing. Existing products have a uniform iron core area and a fixed housing volume, resulting in relatively low product performance for the same ignition coil volume. Summary of the Invention

[0003] This invention provides an ignition coil core structure that is simple in structure, has greater energy conversion efficiency in the same volume, is flexible, and has low cost, meeting diverse performance requirements of customers; it solves the technical problems of simple structure and low product performance of existing ignition coils.

[0004] The above-mentioned technical problem of this utility model is solved by the following technical solution: a core structure for an ignition coil, including a housing, a receiving groove on the housing, and a core assembly installed in the receiving groove. The core assembly includes a central core and side cores located on both sides of the central core. Additional plates are installed on at least one of the side cores, either above or below it, with the number of additional plates n≥1. One or more plates can be added to one side of the side core; or multiple plates above and one plate below; or both above and below are single plates; or both above and below are multiple plates, etc., depending on customer requirements, adding different numbers or directions of additional plates to achieve a more compact structural shape, enabling the ignition coil to have greater energy conversion efficiency and output more energy. The increased magnetic saturation threshold brought about by the asymmetric laminated core allows for the redesign of the number of turns or wire diameter of the primary coil to apply a larger primary current without causing core saturation failure. This 'magnetic circuit-electrical circuit' collaborative design enables an increase in the overall output energy of the ignition coil while maintaining the same structural dimensions.

[0005] Preferably, the additional piece and the side core are detachable, connected by a groove and a protrusion. This detachable connection structure is simple, easy to assemble and disassemble, and can be customized to meet different usage requirements.

[0006] Preferably, when the number of attachments n≥2, adjacent attachments are also detachably connected, and adjacent attachments are connected by the mating of grooves and protrusions.

[0007] Preferably, the additional piece is L-shaped, I-shaped, or C-shaped, and is located outside the central core. The additional piece does not need to cover the entire side core; it is best not to obstruct the central core. This does not affect the installation of the central and side cores, but makes the overall product structure more compact, optimizing cost and performance.

[0008] Preferably, the magnetic permeability of the auxiliary plate is not lower than that of the side plate core. Using materials with higher magnetic permeability or higher saturation magnetic density in the auxiliary plate improves conversion efficiency and achieves higher secondary output energy under the same input.

[0009] Preferably, the height of the side core is greater than the height of the central core. The C-shaped side core is thicker than the central core, which improves the energy conversion efficiency.

[0010] Therefore, the core structure of the ignition coil of this invention has the following advantages: 1. To make the entire product more compact and meet the requirements for miniaturization; 2. Within the same volume, the product can achieve greater energy conversion efficiency, meeting higher energy platform requirements; 3. The product design allows for more flexible adjustment of ignition energy output to meet diverse customer performance requirements; 4. The material of the additional silicon steel sheet can be different from that of the basic iron core, using a material with higher magnetic permeability to optimize cost and performance. Attached Figure Description

[0011] Figure 1 This is a three-dimensional diagram of the core structure of an ignition coil.

[0012] Figure 2 It is in Example 1 Figure 1 Diagram of the middle side iron core.

[0013] Figure 3 It is in Example 2 Figure 1 Diagram of the middle side iron core.

[0014] Figure 4 It is in Example 3 Figure 1 Diagram of the middle side iron core.

[0015] Figure 5 It is in Example 4 Figure 1 Diagram of the middle side iron core.

[0016] Figure 6 It is in Example 5 Figure 1 Diagram of the middle side iron core. Detailed Implementation

[0017] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] Example 1: like Figure 1 and 2 As shown, an ignition coil core structure includes a housing 1 with a receiving cavity inside the housing 1, and a core assembly installed within the receiving cavity. The core assembly includes a central core 2 and side cores 3 located on both sides of the central core 2. The central core 2 is T-shaped, and the side cores 3 are C-shaped. The two side cores 3 have the same structure, but the thickness of the side cores 3 is greater than that of the central core 2. The central core 2 and the side cores 3 are made of Baosteel B50A310 material. An auxiliary piece 4 is installed on the side core 3. The auxiliary piece 4 is L-shaped, I-shaped, or C-shaped. It is sufficient to ensure that the two ends of the auxiliary piece 4 are outside the connection point between the central core 2 and the side core 3, without affecting the original connection between the central core 2 and the side core 3. The auxiliary piece 4 is made of B50A280, B35A440, or iron-cobalt soft magnetic alloy. The side core 3 and the auxiliary piece 4 are connected by the engagement of a groove 5 and a protrusion. Increasing the magnetic field energy stored in the core of the product structure improves the ignition energy output. Using silicon steel sheets of varying sizes is necessary to maintain the overall size of the product and keep it miniaturized. This allows the product to deliver a higher energy platform within the same volume, and enables more flexible adjustments to the ignition energy output during product design to meet diverse customer performance requirements.

[0019] Example 2: like Figure 3 As shown, unlike Embodiment 1, multiple additional plates 4 are stacked on top of the side core 3. The side core 3 and the additional plates 4 are connected by grooves and protrusions, and adjacent additional plates 4 are also connected by the cooperation of grooves and protrusions.

[0020] Example 3: like Figure 4 As shown, unlike Embodiment 1, an additional piece 4 is installed above the side core 3 and below the side core 3. The side core 3 and the additional piece 4 are connected by a groove and a protrusion.

[0021] Example 4: like Figure 5 As shown, unlike Embodiment 1, multiple additional plates 4 are installed above the side core 3, and one additional plate 4 is installed below the side core 3. The side core 3 and the additional plate 4 are connected by grooves and protrusions, and adjacent additional plates are also connected by the engagement of grooves and protrusions.

[0022] Example 5: like Figure 6 As shown, unlike Embodiment 1, multiple additional plates 4 are installed above the side core 3. The side core 3 and the additional plates 4 are connected by grooves and protrusions, and adjacent additional plates are also connected by the cooperation of grooves and protrusions.

[0023] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A core structure for an ignition coil, comprising a housing, a receiving groove formed on the housing, and a core assembly installed within the receiving groove, characterized in that: The core assembly includes a central core and side cores located on both sides of the central core. Additional plates are installed on at least one of the side cores, either above or below it, and the number of additional plates n≥1.

2. The core structure of the ignition coil according to claim 1, characterized in that: The additional plate and the side iron core are detachable structures, and the additional plate and the side iron core are connected by the engagement of grooves and protrusions.

3. The core structure of the ignition coil according to claim 1, characterized in that: When the number of attachment pieces n≥2, adjacent attachment pieces are also detachably connected, and adjacent attachment pieces are connected by the mating of grooves and protrusions.

4. The core structure of the ignition coil according to claim 1, 2, or 3, characterized in that: The additional piece is L-shaped, I-shaped, or C-shaped, and is located outside the central iron core.

5. The core structure of the ignition coil according to any one of claims 1 to 3, characterized in that: The magnetic permeability of the additional sheet is not lower than that of the side plate core.

6. The core structure of the ignition coil according to any one of claims 1 to 3, characterized in that: The height of the side iron core is greater than the height of the central iron core.

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