Internal core connecting structure of filter capacitor
By adopting a composite core connection structure in the filter capacitor, the second copper bar covers and connects the three sides of the core group, the problem of low heat dissipation efficiency of the existing capacitors is solved and the service life is extended.
Patent Information
- Application Number
- CN202421608604.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing filter capacitors have low heat dissipation efficiency, resulting in short service life.
A composite core connection structure is adopted, and the three sides of the core group are covered by a second copper bar and connected to both sides of the core to improve heat dissipation efficiency.
It significantly improves the heat dissipation efficiency of the core group and extends the service life of the capacitor.
Smart Images
Figure CN222914571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filter capacitors, in particular to an internal core connection structure of a filter capacitor. Background Art
[0002] Filter capacitors are applicable to voltage filtering in electronic rectifiers, such as in fields of computers, televisions, switch-mode power supplies and electronic ballasts in a series of electrical appliances. A filter capacitor is composed of a box body, a packaging member, a core group, etc.
[0003] As Figure 1 shown, this is a core connection structure in the prior art, which is composed of a vertical copper bar, a horizontal copper bar electrically connected to the vertical copper bar, and cores, etc. Since the heat dissipation between the cores is mainly through the horizontal copper bar, and it is only arranged on one side of the cores, resulting in low heat dissipation efficiency, so that the heat cannot be transferred out quickly, thus greatly affecting the service life of the capacitor. Summary of the Utility Model
[0004] The utility model aims to solve the problems of poor internal heat dissipation effect and low service life of capacitors in the prior art. For this purpose, the object of the utility model is to provide a new core connection structure, adopting a composite connection structure, increasing the heat dissipation efficiency of the core group, and prolonging the service life of the capacitor.
[0005] To achieve the above object, the technical solution of the utility model is as follows:
[0006] An internal core connection structure of a filter capacitor, comprising a plurality of rows of core groups arranged side by side. Each row of the core groups includes a plurality of cores, a first copper bar, and a second copper bar. The plurality of cores are arranged side by side on the first copper bar. The second copper bar is arranged outside the cores and the first copper bar, and the second copper bar surrounds three sides of the cores.
[0007] Further on the basis of the above solution, the second copper bar is a bent part with a cross-section of [ shape, including a first second copper bar, a second second copper bar, and a third second copper bar. The first second copper bar is connected outside the connection surface of the core and the first copper bar. The second second copper bar is located outside the circumferential surface of the core. The third second copper bar is connected outside the front side surface of the core.
[0008] Further on the basis of the above solution, one end of the first copper bar extends outwards.
[0009] Further on the basis of the above solution, the third second copper bar covers 2 / 3 - 3 / 4 of the front side surface of the core.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] The utility model adopts a composite structure. By arranging a second copper bar to wrap three sides of the core group and connect with both sides of the core, compared with the traditional structure which is only arranged on one side of the core, the heat dissipation efficiency of the core group is improved, and the service life of the capacitor is prolonged. Brief Description of the Drawings
[0012] Figure 1 is the connection structure of the core group in the prior art;
[0013] Figure 2 is the front view of the utility model;
[0014] Figure 3 is the left view of the utility model;
[0015] Figure 4 is the assembly state diagram of the utility model.
[0016] In the figures: 1. Core group, 11. Core, 12. First copper bar, 13. Second copper bar, 131. First part of the second copper bar, 132. Second part of the second copper bar, 133. Third part of the second copper bar, 14. Solder joint, 2. Capacitor housing. Detailed Description of the Embodiments
[0017] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of devices consistent with some aspects of the present application as detailed in the appended claims.
[0018] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this utility model belongs. The words such as "a" or "an" used in the specification and claims of this application do not denote a limitation of quantity, but rather mean that there is at least one. "Plural" includes two, which is equivalent to at least two. The words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms of "a", "the" and "said" used in the specification and appended claims of this application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.
[0019] Please refer specifically to Figure 2-3 , a connection structure for the internal core 11 of a filter capacitor, comprising several rows of core groups 1 arranged side by side. The number of rows of core groups 1 is selected according to the size of the capacitor housing 2 and actual requirements. Specifically, each row of core groups 1 includes 7 cores 11, 1 first copper row 12, and 1 second copper row 13. The 7 cores 11 are arranged side by side and at equal intervals on the first copper row 12, and the two are welded at the solder joint 14 position. The second copper row 13 is arranged outside the cores 11 and the first copper row 12, and the second copper row 13 surrounds three sides of the cores 11. The back of the second copper row 13 is welded to the first copper row 12, and the front is welded to the cores 11 at the front solder joint 14.
[0020] Furthermore, the second copper row 13 is a bent part, formed by bending twice, with a cross-section in the shape of [, including a first second copper row 131, a second second copper row 132, and a third second copper row 133. The first second copper row 131 is welded and connected to the outside of the connection surface between the core 11 and the first copper row 12. The second second copper row 132 is located outside the circumferential surface of the core 11. The third second copper row 133 is welded and connected to the outside of the front side of the core 11. This utility model adopts a composite structure. By arranging the second copper row 13 to cover three sides of the core group 1 and connect to the front and back sides of the core 11, compared with the traditional one only arranged on one side of the core 11, the heat dissipation efficiency of the core group 1 is improved, and the service life of the capacitor is extended.
[0021] Please refer specifically to Figure 4, a number of rows of core groups 1 are arranged side by side inside the capacitor housing 2, and one end of the first copper row 12 extends outwards, and the extended part is connected to the copper row inside the capacitor housing 2.
[0022] Further, the third second copper row 133 covers 2 / 3 to 3 / 4 of the front side of the core 11. The third second copper row 133 covers about 2 / 3 of the front sides of the 2 outer cores 11, and the third second copper row 133 covers about 3 / 4 of the front sides of the 5 middle cores 11.
[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A filter capacitor internal core connection structure, comprising a plurality of rows of core groups, wherein the plurality of rows of core groups are arranged side by side, characterized in that: Each row of the core group includes a plurality of cores, a first copper bar and a second copper bar. The plurality of cores are arranged side by side on the first copper bar, the second copper bar is arranged outside the cores and the first copper bar, and the second copper bar surrounds three sides of the core.
2. The filter capacitor internal core connection structure according to claim 1, characterized in that: The second copper bar is a bent part with a [-shaped cross-section, including a second copper bar one, a second copper bar two and a second copper bar three. The second copper bar one is connected to the outside of the connecting surface between the core and the first copper bar, the second copper bar two is located outside the circumferential surface of the core, and the second copper bar three is connected to the outside of the front side surface of the core.
3. The filter capacitor internal core connection structure according to claim 2, characterized in that: One end of the first copper bar extends outward.
4. The filter capacitor internal core connection structure according to claim 2, characterized in that: The second copper bar 3 covers 2 / 3 to 3 / 4 of the front side surface of the core.