Resistance-capacitance device, switching power supply circuit and charger
By designing a resistor container that integrates capacitor module and discharge circuit, the problem of excessive PCB space and poor adaptability of switching power supply circuits is solved, and more efficient electromagnetic interference suppression and more flexible voltage and time adjustment are achieved.
Patent Information
- Application Number
- CN202420563607.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The existing switching power supply circuits occupy too much PCB design space and are less adaptable when dealing with electromagnetic interference in the power supply.
A resistor container is designed, including a first guide pin, a second guide pin, a capacitor module and a discharge resistor module. The resistance value between the first guide pin and the second guide pin is adjusted through the discharge resistor module, and the capacitor module and a discharge circuit are integrated to reduce the PCB design space and improve the adaptability of electromagnetic interference suppression of power supply.
Through the integrated capacitor module and discharge circuit, the PCB design space is reduced, and the voltage and discharge time of the capacitor module are flexibly adjusted by adjusting the resistance value, improving the adaptability of the switching power supply circuit in dealing with electromagnetic interference of the power supply.
Smart Images
Figure CN222582289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic circuits, in particular to a resistor and capacitor, a switching power supply circuit and a charger. Background Art
[0002] In switching power supply circuits, X capacitors are generally used. X capacitors are electronic components used to suppress electromagnetic interference in power supplies, and are usually connected across two power lines (live and neutral). However, in order to ensure the safety of switching power supply circuits, after the switching power supply circuit is powered off, the residual voltage on the X capacitor needs to meet certain safety standards.
[0003] Since the discharge time of the X capacitor itself is very long, during this period, the user may cause an electric shock accident by touching the switch power plug. Therefore, a discharge circuit is generally connected in parallel to the X capacitor. However, the existing X capacitor and discharge circuit are independently set on the PCB, which takes up too much PCB design space. In addition, different switch power circuits need to design X capacitors with different capacitance, and X capacitors with different capacitance require corresponding discharge circuits to meet safety standards. Therefore, the existing switch power circuit has poor adaptability when dealing with power supply electromagnetic interference. Utility Model Content
[0004] The embodiments of the utility model provide a resistor and capacitor, a switching power supply circuit and a charger to solve the problems that the existing switching power supply circuit occupies too much PCB design space and has poor adaptability when processing power supply electromagnetic interference.
[0005] A resistor container comprises a first guide needle, a second guide needle, a capacitor module and a discharge resistor module;
[0006] The first guide needle and the second guide needle are arranged in parallel and are used to connect to an external circuit;
[0007] One end of the capacitor module is connected to the first guide needle, and the other end of the capacitor module is connected to the second guide needle;
[0008] One end of the discharge resistance module is fixedly connected to the first guide needle, and the other end of the discharge resistance module is movably connected to the second guide needle, so as to adjust the resistance value between the first guide needle and the second guide needle.
[0009] Further, the discharge resistor module includes a ring resistor and an adjustment component;
[0010] The annular resistor is fixedly connected to the first guide needle;
[0011] The adjusting component is arranged in the annular resistor, the first end of the adjusting component is movably connected to the second guide needle, and the second end of the adjusting component is slidably connected to the annular resistor.
[0012] Further, the adjustment assembly includes a conductive connector;
[0013] The conductive connecting member comprises a conductive body, a conductive through hole arranged on the conductive body along a first direction, and a conductive connecting portion arranged on the conductive body along a second direction; the first direction is perpendicular to the second direction;
[0014] The conductive through hole is sleeved on the second guide needle and rotatably connected to the second guide needle, and the conductive connecting part is slidably connected to the annular resistor.
[0015] Further, the conductive connection portion includes a sliding protrusion extending outward from the conductive body along the second direction, a sliding groove is provided on the inner side of the annular resistor, and the sliding protrusion is slidably connected to the sliding groove;
[0016] Alternatively, the conductive connection portion comprises a sliding groove extending inwardly from the conductive body along the second direction, and a sliding protrusion extending along the center direction is provided on the inner side of the annular resistor, and the sliding protrusion is slidably connected to the sliding groove.
[0017] Furthermore, the conductive body is a circular conductive body; the conductive through hole is arranged at the center of the circular conductive body; and the conductive connecting portion is arranged at the outer edge of the circular conductive body and extends outwardly in a radial direction.
[0018] Furthermore, the conductive body is a long strip-shaped conductive body; the conductive through hole and the conductive connecting portion are respectively arranged at two ends of the conductive body.
[0019] Furthermore, the adjustment component also includes an adjustment control member, which is connected to the conductive body and is used to control the conductive body to rotate around the second guide needle.
[0020] A switching power supply circuit comprises the above-mentioned resistor and capacitor.
[0021] Furthermore, the switching power supply circuit includes a phase line connection terminal and a neutral line connection terminal; one of the first guide pin and the second guide pin of the resistor is connected to the phase line connection terminal, and the other is connected to the neutral line connection terminal.
[0022] A charger comprises the above-mentioned switching power supply circuit.
[0023] The above-mentioned resistor and capacitor, switching power supply circuit and charger, the resistor and capacitor include a first guide pin, a second guide pin, a capacitor module and a discharge resistor module; the first guide pin and the second guide pin are arranged in parallel for connecting an external circuit; one end of the capacitor module is connected to the first guide pin, and the other end of the capacitor module is connected to the second guide pin; one end of the discharge resistor module is fixedly connected to the first guide pin, and the other end of the discharge resistor module is movably connected to the second guide pin, for adjusting the resistance value between the first guide pin and the second guide pin, thereby integrating the capacitor module and the discharge resistor module in the resistor and capacitor, reducing the PCB design space, and adjusting the resistance value between the first guide pin and the second guide pin through the discharge resistor module, so that the voltage and discharge time of the capacitor module in the resistor and capacitor can be flexibly adjusted, thereby improving the adaptability of the resistor and capacitor in dealing with power supply electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0025] Figure 1 This is a schematic diagram of a resistance container in one embodiment of the utility model;
[0026] Figure 2 It is a top view of a resistance container in one embodiment of the utility model;
[0027] Figure 3 It is another top view of the resistance container in one embodiment of the utility model.
[0028] In the figure: 1. first guide pin; 2. second guide pin; 3. capacitor module; 31. first metal layer; 32. dielectric layer; 33. third metal layer; 4. discharge resistor module; 41. annular resistor; 42. adjustment component; 421. conductive connector; 4211. conductive through hole; 4212. conductive connection part; 422. adjustment control part; 5. shell. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] It should be understood that the utility model can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.
[0031] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. On the contrary, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.
[0032] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.
[0033] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising" when used in this specification determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0034] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.
[0035] This embodiment provides a resistor and capacitor, which is used in a charger. Exemplarily, the charger includes a switching power supply circuit. The switching power supply circuit includes a phase line connection terminal and a neutral line connection terminal for accessing a public power grid. The resistor and capacitor are connected across the phase line connection terminal and the neutral line connection terminal, and are used to suppress electromagnetic interference of the switching power supply circuit, ensure that the switching power supply circuit complies with safety standards, and reduce the PCB design space of the switching power supply circuit, ensuring the adaptability of the switching power supply circuit when dealing with power supply electromagnetic interference.
[0036] This embodiment provides a resistor. Figure 1 As shown, it includes a first guide needle 1, a second guide needle 2, a capacitor module 3 and a discharge resistor module 4; the first guide needle 1 and the second guide needle 2 are arranged in parallel for connecting an external circuit; one end of the capacitor module 3 is connected to the first guide needle 1, and the other end of the capacitor module 3 is connected to the second guide needle 2; one end of the discharge resistor module 4 is fixedly connected to the first guide needle 1, and the other end of the discharge resistor module 4 is movably connected to the second guide needle 2, for adjusting the resistance value between the first guide needle 1 and the second guide needle 2.
[0037] As an example, the first guide pin 1 and the second guide pin 2 are arranged in parallel for connecting an external circuit. Exemplarily, the external circuit includes a switching power supply circuit. The switching power supply circuit includes a phase line connection terminal and a neutral line connection terminal; one of the first guide pin 1 and the second guide pin 2 of the resistor is connected to the phase line connection terminal, and the other is connected to the neutral line connection terminal. Optionally, the first guide pin 1 and the second guide pin 2 are tinned copper clad steel wires.
[0038] As an example, one end of the capacitor module 3 is connected to the first guide pin 1, and the other end of the capacitor module 3 is connected to the second guide pin 2, for suppressing electromagnetic interference. Exemplarily, the capacitor module 3 includes a first metal layer 31, a dielectric layer 32, and a second metal layer, the dielectric layer 32 is located between the first metal layer 31 and the second metal layer, the first metal layer 31 is connected to the first guide pin 1, and the second metal layer is connected to the second guide pin 2. Optionally, the dielectric layer 32 is a metallized polypropylene film. Optionally, the first metal layer 31 and the second metal layer are made of zinc, tin, or an alloy thereof.
[0039] As an example, one end of the discharge resistor module 4 is fixedly connected to the first guide needle 1, and the other end of the discharge resistor module 4 is movably connected to the second guide needle 2, so as to adjust the resistance value between the first guide needle 1 and the second guide needle 2. In this embodiment, by fixing one end of the discharge resistor module 4 to the first guide needle 1 and movably connecting the other end of the discharge resistor module 4 to the second guide needle 2, a parallel connection mode is formed with the capacitor module 3, so that the capacitor module 3 is discharged through the discharge resistor module 4, so that the voltage of the capacitor module 3 meets the safety standard, and the resistance value between the first guide needle 1 and the second guide needle 2 is adjusted through the discharge resistor module 4, so that the voltage and discharge time of the capacitor module 3 in the resistor can be flexibly adjusted, thereby improving the adaptability of the resistor in handling power supply electromagnetic interference.
[0040] In one embodiment, the discharge resistor module 4 includes a ring resistor 41 and an adjustment component 42; the ring resistor 41 is fixedly connected to the first guide needle 1; the adjustment component 42 is arranged in the ring resistor 41, the first end of the adjustment component 42 is movably connected to the second guide needle 2, and the second end of the adjustment component 42 is slidably connected to the ring resistor 41.
[0041] As an example, a fixed connection point is provided on the outer side of the annular resistor 41 , and the fixed connection point is fixedly connected to the first guide needle 1 .
[0042] As an example, the adjustment component 42 is arranged in the annular resistor 41, the first end of the adjustment component 42 is movably connected to the second guide needle 2, and the second end of the adjustment component 42 is slidably connected to the annular resistor 41. It can be understood that the adjustment component 42 has a conductive property. In this embodiment, since the first end of the adjustment component is movably connected to the second guide needle 2, when the second end of the adjustment component 42 slides on the annular resistor 41, the electrical connection position of the first guide needle 1 and the second guide needle 2 on the annular resistor 41 can be changed, so that the resistance value between the first guide needle 1 and the second guide needle 2 changes, thereby adjusting the resistance value between the first guide needle 1 and the second guide needle 2.
[0043] In one embodiment, the adjustment component 42 includes a conductive connecting member 421; the conductive connecting member 421 includes a conductive body, a conductive through hole 4211 arranged on the conductive body along a first direction, and a conductive connecting portion 4212 arranged on the conductive body along a second direction; the first direction is perpendicular to the second direction; the conductive through hole 4211 is sleeved on the second guide needle 2 and is rotatably connected to the second guide needle 2, and the conductive connecting portion 4212 is slidably connected to the annular resistor 41.
[0044] In this embodiment, when it is necessary to adjust the resistance value between the first guide needle 1 and the second guide needle 2, the conductive through hole 4211 of the conductive connecting member 421 rotates around the first guide needle 1, and the conductive connecting part 4212 slides on the annular resistor 41, so that the electrical connection position of the first guide needle 1 and the second guide needle 2 on the annular resistor 41 changes, thereby changing the resistance value between the first guide needle 1 and the second guide needle 2, thereby adjusting the resistance value between the first guide needle 1 and the second guide needle 2.
[0045] In one embodiment, the conductive connection part 4212 includes a sliding protrusion extending outward from the conductive body along the second direction, a sliding groove is provided on the inner side of the annular resistor 41, and the sliding protrusion is slidably connected to the sliding groove; or, the conductive connection part 4212 includes a sliding groove extending inward from the conductive body along the second direction, a sliding protrusion extending along the center direction is provided on the inner side of the annular resistor 41, and the sliding protrusion is slidably connected to the sliding groove.
[0046] In this embodiment, the conductive connection portion 4212 and the annular resistor 41 are slidably connected via a sliding protrusion and a sliding groove, thereby improving the firmness of the connection and the stability during the sliding process.
[0047] In one embodiment, if Figure 2 As shown, the conductive body is a circular conductive body; the conductive through hole 4211 is arranged at the center of the circular conductive body; the conductive connecting portion 4212 is arranged at the outer edge of the circular conductive body and extends outward in the radial direction.
[0048] In this embodiment, when it is necessary to adjust the resistance value between the first guide needle 1 and the second guide needle 2, the conductive connecting portion 4212, which is arranged on the outer edge of the circular conductive body and extends outward in the radial direction, slides on the annular resistor 41 around the center position of the circular conductive body, so that the electrical connection position of the first guide needle 1 and the second guide needle 2 on the annular resistor 41 changes, thereby changing the resistance value between the first guide needle 1 and the second guide needle 2, thereby adjusting the resistance value between the first guide needle 1 and the second guide needle 2.
[0049] In one embodiment, if Figure 3 As shown, the conductive body is a long strip-shaped conductive body; the conductive through hole 4211 and the conductive connecting portion 4212 are respectively arranged at two ends of the conductive body.
[0050] In this embodiment, when the resistance value between the first guide needle 1 and the second guide needle 2 needs to be adjusted, the conductive connecting portion 4212 of the conductive body slides on the ring resistor 41 around the second guide needle 2 in the conductive through hole 4211 at the other end of the conductive body, so that the electrical connection position of the first guide needle 1 and the second guide needle 2 on the ring resistor 41 changes, thereby changing the resistance value between the first guide needle 1 and the second guide needle 2, thereby adjusting the resistance value between the first guide needle 1 and the second guide needle 2.
[0051] In one embodiment, the adjustment component 42 further includes an adjustment control member 422 , and the adjustment control member 422 is connected to the conductive body and is used to control the conductive body to rotate around the second guide needle 2 .
[0052] As an example, the adjustment control member 422 is connected to the conductive through hole 4211 , and when the adjustment control member is rotated, the conductive body can be controlled to rotate around the second guide needle 2 .
[0053] As an example, the adjustment component 42 is a screw.
[0054] As an example, Figure 1 As shown, the resistor includes a shell 5, the capacitor module 3 and the discharge resistor module 4 are arranged in the shell 5, the first guide needle 1 and the second guide needle 2 extend from a first direction of the shell 5, and the adjustment component 42 extends from a third direction of the shell 5, and the first direction is opposite to the third direction.
[0055] In this embodiment, the adjustment control member 422 is connected to the conductive body, and is used to control the conductive body to rotate around the second guide needle 2, so as to facilitate the adjustment of the resistance value between the first guide needle 1 and the second guide needle 2.
[0056] This embodiment provides a switching power supply circuit, including the above-mentioned resistor and capacitor.
[0057] In one embodiment, the switching power supply circuit includes a phase line connection terminal and a neutral line connection terminal; one of the first guide pin 1 and the second guide pin 2 of the resistor is connected to the phase line connection terminal, and the other is connected to the neutral line connection terminal.
[0058] This embodiment provides a charger, including the above-mentioned switching power supply circuit.
[0059] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.
Claims
1. A resistor, characterized in that: It includes a first guide needle, a second guide needle, a capacitor module and a discharge resistor module; The first guide needle and the second guide needle are arranged in parallel and are used to connect to an external circuit; One end of the capacitor module is connected to the first guide needle, and the other end of the capacitor module is connected to the second guide needle; One end of the discharge resistance module is fixedly connected to the first guide needle, and the other end of the discharge resistance module is movably connected to the second guide needle, so as to adjust the resistance value between the first guide needle and the second guide needle.
2. The resistor according to claim 1, characterized in that: The discharge resistance module includes a ring resistor and an adjustment component; The annular resistor is fixedly connected to the first guide needle; The adjusting component is arranged in the annular resistor, the first end of the adjusting component is movably connected to the second guide needle, and the second end of the adjusting component is slidably connected to the annular resistor.
3. The resistor according to claim 2, characterized in that: The adjustment assembly includes a conductive connector; The conductive connecting member comprises a conductive body, a conductive through hole arranged on the conductive body along a first direction, and a conductive connecting portion arranged on the conductive body along a second direction; the first direction is perpendicular to the second direction; The conductive through hole is sleeved on the second guide needle and rotatably connected to the second guide needle, and the conductive connecting part is slidably connected to the annular resistor.
4. The resistor according to claim 3, characterized in that: The conductive connection portion includes a sliding protrusion extending outward from the conductive body along the second direction, a sliding groove is provided on the inner side of the annular resistor, and the sliding protrusion is slidably connected to the sliding groove; Alternatively, the conductive connection portion comprises a sliding groove extending inwardly from the conductive body along the second direction, and a sliding protrusion extending along the center direction is provided on the inner side of the annular resistor, and the sliding protrusion is slidably connected to the sliding groove.
5. The resistor according to claim 4, characterized in that: The conductive body is a circular conductive body; the conductive through hole is arranged at the center of the circular conductive body; the conductive connecting portion is arranged at the outer edge of the circular conductive body and extends outwardly in a radial direction.
6. The resistor according to claim 4, characterized in that: The conductive body is a long strip-shaped conductive body; the conductive through hole and the conductive connecting portion are respectively arranged at two ends of the conductive body.
7. The resistor according to claim 4, characterized in that: The adjustment component also includes an adjustment control member, which is connected to the conductive body and is used to control the conductive body to rotate around the second guide needle.
8. A switching power supply circuit, characterized in that: Comprising the resistor as described in any one of claims 1 to 7.
9. The switching power supply circuit according to claim 8, characterized in that: The switching power supply circuit comprises a phase line connection terminal and a neutral line connection terminal; one of the first guide pin and the second guide pin of the resistor is connected to the phase line connection terminal, and the other is connected to the neutral line connection terminal.
10. A charger, characterized in that: Comprising the switching power supply circuit as claimed in claim 8 or 9.