CN215378879U - High-power filter - Google Patents
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- CN215378879U CN215378879U CN202023332839.5U CN202023332839U CN215378879U CN 215378879 U CN215378879 U CN 215378879U CN 202023332839 U CN202023332839 U CN 202023332839U CN 215378879 U CN215378879 U CN 215378879U
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- 238000001914 filtration Methods 0.000 claims abstract description 66
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- 230000005611 electricity Effects 0.000 abstract description 9
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003985 ceramic capacitor Substances 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
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- 230000003139 buffering effect Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
The utility model relates to the technical field of filters, in particular to a high-power filter. The filter includes: the input end of each filter circuit is connected with a power supply, the output end of each filter circuit is connected with a load, and the filter circuits are connected in parallel; the filter circuit is used for receiving the power supply voltage input by the power supply and filtering the power supply voltage to obtain constant stable voltage with stable frequency; the filter circuit is further used for outputting the constant stable voltage to the load. Through the filter, alternating current filtering under the high-power electricity utilization scene is realized, and hierarchical filtering is favorable for obtaining constant and stable voltage with more stable frequency and less alternating current components, so that the industrial electricity utilization requirement is better met.
Description
Technical Field
The utility model relates to the technical field of filters, in particular to a high-power filter.
Background
Most of traditional high-power filters use ceramic capacitors to realize filtering, but in the aspect of electricity utilization performance, a single ceramic capacitor cannot achieve a good filtering effect, so that finally output currents still have noise waves with large frequency differences, and especially for some equipment with high electricity utilization requirements, such as industrial high-power loads, the traditional filters cannot achieve the expected filtering and influence industrial electricity utilization.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a high-power filter, and aims to solve the technical problem of how to provide constant and stable voltage with better filtering effect for a load.
To achieve the above object, the present invention provides a high power filter, comprising: a plurality of filter circuits; the input end of each filter circuit is connected with a power supply, the output end of each filter circuit is connected with a load, and the filter circuits are connected in parallel;
the filter circuit is used for receiving the power supply voltage input by the power supply and filtering the power supply voltage to obtain constant stable voltage with stable frequency;
the filter circuit is further used for outputting the constant stable voltage to the load.
Optionally, the filter further includes a current detector, a receiving end of the current detector is connected to the power supply, and an output end of the current detector is connected to a receiving end of the filter circuit;
the current detector is used for receiving the power supply voltage input by the power supply and disconnecting a path between the power supply and the filter circuit when the power supply voltage is greater than a preset voltage threshold value.
Optionally, the filter circuit includes a first filter unit, a second filter unit, and a third filter unit; the first filtering unit, the second filtering unit and the third filtering unit are connected in sequence.
Optionally, the first filtering unit includes: the circuit comprises a first inductor, a fourth inductor, a first capacitor, a second capacitor, a first resistor and a second resistor; wherein,
the first end of the first capacitor is connected with the positive pole of the power supply and the first end of the first inductor, the second end of the first capacitor is connected with the first end of the first resistor, the second end of the first resistor is connected with the first end of the fourth inductor and the negative pole of the power supply, the second end of the first inductor is connected with the first end of the second capacitor and an input end of the second filtering unit, the second end of the second capacitor is connected with the first end of the second resistor, and the second end of the second resistor is connected with the second end of the fourth inductor and another input end of the second filtering unit.
Optionally, the second filtering unit includes: the second inductor, the fifth inductor, the third capacitor and the third resistor; wherein,
the first end of the second inductor is connected with the second end of the first inductor, the second end of the second inductor is connected with the first end of the third capacitor and an input end of the third filtering unit, the second end of the third capacitor is connected with the first end of the third resistor, the second end of the third resistor is connected with the second end of the fifth inductor and another input end of the third filtering unit, and the first end of the fifth inductor is connected with the second end of the fourth inductor.
Optionally, the third filtering unit includes: a third inductor, a sixth inductor, a fourth capacitor and a fourth resistor; wherein,
the first end of the third inductor is connected with the second end of the second inductor, the second end of the third inductor is connected with the first end of the fourth capacitor and an input end of the load, the second end of the fourth capacitor is connected with the first end of the fourth resistor, the second end of the fourth resistor is connected with the second end of the sixth inductor and another input end of the load, and the first end of the sixth inductor is connected with the second end of the fifth inductor.
Optionally, the devices of the filter circuits are the same, and the connection relationship of the devices is the same.
Optionally, capacitance values of capacitances in the first filtering unit, the second filtering unit, and the third filtering unit sequentially increase.
Optionally, the current detector further comprises: a protection switch;
and the protection switch is used for switching off when the power supply voltage is greater than a preset voltage threshold value.
The utility model provides a high-power filter, comprising: a plurality of filter circuits; the input end of each filter circuit is connected with a power supply, the output end of each filter circuit is connected with a load, and the filter circuits are connected in parallel; the filter circuit is used for receiving the power supply voltage input by the power supply and filtering the power supply voltage to obtain constant stable voltage with stable frequency; the filter circuit is further used for outputting the constant stable voltage to the load. The filter realizes the process of filtering alternating current components in direct current under the high-power electricity utilization scene, can realize the hierarchical filtering of input current through the filter, reduces the alternating current frequency filtered from the input end to the output end in sequence, optimizes the filtering benefit of the traditional filter to a great extent, is beneficial to outputting current with more stable frequency and less alternating current components to a load, and simultaneously, the special circuit connection relation of the filter can meet the high-power electricity utilization scene and better accords with the industrial electricity utilization expectation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first embodiment of a high power filter according to the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the high power filter of the present invention;
fig. 3 is a circuit diagram of a second embodiment of the high power filter of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| C1～C4 | First to |
100 | Filter circuit |
| L1～L6 | First to |
101 | First filter unit |
| R1～R4 | First to fourth resistors | 102 | Second filter unit |
| Vin | |
103 | Third filter unit |
| Vout | |
200 | Current detector |
| 300 | Load(s) | F | Protective switch |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The utility model provides a high-power filter, and referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of the high-power filter of the utility model.
The utility model relates to a high-power filter, which comprises: the input end of each filter circuit 100 is connected with a power supply, the output end of each filter circuit is connected with a load, and the filter circuits are connected in parallel.
It is easy to understand that the purpose of the parallel connection mode among the filter circuits 100 is to shunt current, when power is supplied to a high-power load, the working load of the filter circuits can be reduced by adopting the connection mode, and the components of the filter circuits are protected from being damaged while the power consumption of the high-power load is met.
It should be noted that the filter circuits 100 are connected by coaxial cables, and coaxial cables are used between the input end and the power supply and between the output end and the load of each filter circuit 100, and the coaxial cables are used for shielding the current from the outside and protecting the input current from interference.
It should be understood that the power supply primarily provides a direct current, but that the direct current also contains a small alternating component due to other external nonresistance reasons, such as atmospheric magnetic fields, and that the load should be understood as a high-power direct current load. When the load is connected with the power supply, impact voltage or current can be generated at the moment of connection, so that the load is easy to burn out at the moment of connection, and the impact voltage or current is relieved through the buffering and filtering effects of the filter circuit.
The components of the filter circuits 100 are the same, and the connection relationship between the components is the same.
The filter circuit 100 is configured to receive a power supply voltage input by the power supply, and filter the power supply voltage to obtain a constant voltage with stable frequency.
The filter circuit 100 is further configured to output the constant voltage to the load.
It should be noted that the constant voltage refers to a current with more stable frequency and less ac component compared to the unfiltered input current.
In specific implementation, the high-power filter can comprise a plurality of filter circuits, the filter circuits can be integrated on a circuit board, the circuit board can be inserted into a circuit between a power supply and a load, the circuit board is convenient to use, the performance of the product can be effectively improved, external interference is reduced to a certain extent, and the high-power filter has the advantages of small size, light weight, few outgoing lines and welding points, convenience in production and installation and the like.
According to the first embodiment of the utility model, the filtering process is realized through the circuit structure, the circuit is simple, the principle is easy, the wiring difficulty is low, the filtering under the condition of high-power electricity utilization is favorably realized, the alternating current component in the direct current is filtered, and the constant voltage which is more in line with the industrial requirement is obtained.
A second embodiment of the high power filter of the present invention is proposed based on the first embodiment of the present invention, and refer to fig. 2 and fig. 3. FIG. 2 is a schematic structural diagram of a second embodiment of the high power filter of the present invention; fig. 3 is a circuit diagram of a second embodiment of the high power filter of the present invention.
The high-power filter further comprises a current detector 200, wherein a receiving end of the current detector 200 is connected with a power supply, and an output end of the current detector 200 is connected with a receiving end of the filter circuit;
the current detector 200 is configured to receive a supply voltage input by the power supply, and disconnect a path between the power supply and the filter circuit when the supply voltage is greater than a preset voltage threshold.
The current detector 200 further includes: a protection switch F;
and the protection switch F is used for being switched off when the power supply voltage is greater than a preset voltage threshold value.
In this embodiment, the protection switch F is a fusible conductive wire in nature, and when the input current is too large, the path is opened, so that each component of the protection circuit is not damaged.
In a specific implementation, the current detector may be configured in a controller and relay combination mode (not shown in the drawings, but not affecting the explanation of the present embodiment), one end of the armature of the relay is connected to a power supply, the other end of the armature of the relay is connected to the filter circuit 100, one end of the controller is connected to the power supply, and the other end of the controller is connected to the controlled end of the relay. When the input current accords with the normal working current, the controller controls the armature of the relay to be closed; when the input current is lower than the normal working current, the controller cannot output a high level to supply power to the controlled end of the relay, the magnetic effect generated by the current is not enough to conduct the relay, and the whole circuit is broken at the moment; when the input current is higher than the normal working current, the controller generates a control signal to control the armature of the relay to be disconnected; when the input current is overlarge, the controller plays a role in overcurrent protection, the access is forcibly disconnected, and the whole circuit is broken at the moment, so that all components in the circuit are protected from being damaged. Meanwhile, when the input current is the normal working current again, the relay and the controller can work again, the processes are repeated, and compared with the design of the protection switch F, the mode has the advantage of recycling, namely, the relay and the controller can be connected again after being disconnected, so that the production resource is saved, and the production cost is saved.
Referring to fig. 3, in this embodiment, taking an example that the high-power filter includes two filter circuits, the filter circuit 100 includes a first filter unit 101, a second filter unit 102, and a third filter unit 103; the first filtering unit 101, the second filtering unit 102 and the third filtering unit 103 are connected in sequence.
Note that the first filtering unit 101, the second filtering unit 102, and the third filtering unit 103 are connected by copper wires.
The first filtering unit 101 includes: the inductor comprises a first inductor L1, a fourth inductor L4, a first capacitor C1, a second capacitor C2, a first resistor R1 and a second resistor R2.
A first end of the first capacitor C1 is connected to the positive terminal of the power supply and the first end of the first inductor L1, a second end of the first capacitor C1 is connected to the first end of the first resistor R1, a second end of the first resistor R1 is connected to the first end of the fourth inductor L4 and the negative terminal of the power supply, a second end of the first inductor L1 is connected to the first end of the second capacitor C2 and the first input terminal of the second filtering unit 102, a second end of the second capacitor C2 is connected to the first end of the second resistor R2, and a second end of the second resistor R2 is connected to the second end of the fourth inductor L4 and the other input terminal of the second filtering unit 102.
It should be noted that, when the input current passes through the first filtering unit 101, the first capacitor C1 in the first filtering unit 101 filters an ac component of the current with a first frequency, the first resistor R1 is used for dividing voltage to protect the first capacitor C1 from being damaged, the input current flows to the second capacitor C2 through the first inductor L1, the second capacitor C2 is used for filtering an ac component of the current with a second frequency, and the second resistor R2 is used for dividing voltage to protect the second capacitor C2 from being damaged.
The second filtering unit 102 includes: a second inductor L2, a fifth inductor L5, a third capacitor C3 and a third resistor R3.
A first end of the second inductor L2 is connected to a second end of the first inductor L1, a second end of the second inductor L2 is connected to a first end of the third capacitor C3 and an input end of the third filtering unit 103, a second end of the third capacitor C3 is connected to a first end of the third resistor R3, a second end of the third resistor R3 is connected to a second end of the fifth inductor L5 and another input end of the third filtering unit 103, and a first end of the fifth inductor L5 is connected to a second end of the fourth inductor L4.
It should be noted that, when the input current passes through the second filtering unit 102, the third capacitor C3 in the second filtering unit 102 will filter the ac component of the current with the third frequency, and the third resistor R3 is used to divide the voltage, so as to protect the third capacitor C3 from being damaged.
The third filtering unit 103 includes: a third inductor L3, a sixth inductor L6, a fourth capacitor C4 and a fourth resistor R4.
A first end of the third inductor L3 is connected to a second end of the second inductor L2, a second end of the third inductor L3 is connected to a first end of the fourth capacitor C4 and an input end of the load, a second end of the fourth capacitor C4 is connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is connected to a second end of the sixth inductor L6 and another input end of the load, and a first end of the sixth inductor L6 is connected to a second end of the fifth inductor L5.
It should be noted that, when the input current passes through the third filtering unit 103, the fourth capacitor C4 in the third filtering unit 103 filters the ac component of the current with the fourth frequency, and the fourth resistor R4 is used for voltage division to protect the fourth capacitor C4 from being damaged.
The capacitance values of the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 sequentially increase, and the corresponding first frequency, second frequency, third frequency and fourth frequency sequentially decrease.
According to the second embodiment of the utility model, the current is filtered for multiple times through the circuit, the circuit is simple, the principle is easy, the wiring difficulty is low, the constant voltage with more stable frequency and less alternating current components is favorably obtained, and the industrial power utilization requirement is better met.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the high power filter provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A high power filter, said filter comprising: a plurality of filter circuits; the input end of each filter circuit is connected with a power supply, the output end of each filter circuit is connected with a load, and the filter circuits are connected in parallel;
the filter circuit is used for receiving the power supply voltage input by the power supply and filtering the power supply voltage to obtain constant stable voltage with stable frequency;
the filter circuit is further used for outputting the constant stable voltage to the load.
2. The filter of claim 1, further comprising a current detector, a receiving end of the current detector being connected to a power supply, an output end of the current detector being connected to a receiving end of the filter circuit;
the current detector is used for receiving the power supply voltage input by the power supply and disconnecting a path between the power supply and the filter circuit when the power supply voltage is greater than a preset voltage threshold value.
3. The filter of claim 2, wherein the filtering circuit comprises a first filtering unit, a second filtering unit, and a third filtering unit; the first filtering unit, the second filtering unit and the third filtering unit are connected in sequence.
4. The filter of claim 3, wherein the first filtering unit comprises: the inductor comprises a first inductor, a fourth inductor, a first capacitor, a second capacitor C2, a first resistor and a second resistor; wherein,
the first end of the first capacitor is connected with the positive pole of the power supply and the first end of the first inductor, the second end of the first capacitor is connected with the first end of the first resistor, the second end of the first resistor is connected with the first end of the fourth inductor and the negative pole of the power supply, the second end of the first inductor is connected with the first end of the second capacitor and an input end of the second filtering unit, the second end of the second capacitor is connected with the first end of the second resistor, and the second end of the second resistor is connected with the second end of the fourth inductor and another input end of the second filtering unit.
5. The filter of claim 4, wherein the second filtering unit comprises: the second inductor, the fifth inductor, the third capacitor and the third resistor; wherein,
the first end of the second inductor is connected with the second end of the first inductor, the second end of the second inductor is connected with the first end of the third capacitor and an input end of the third filtering unit, the second end of the third capacitor is connected with the first end of the third resistor, the second end of the third resistor is connected with the second end of the fifth inductor and another input end of the third filtering unit, and the first end of the fifth inductor is connected with the second end of the fourth inductor.
6. The filter of claim 5, wherein the third filtering unit comprises: a third inductor, a sixth inductor, a fourth capacitor and a fourth resistor; wherein,
the first end of the third inductor is connected with the second end of the second inductor, the second end of the third inductor is connected with the first end of the fourth capacitor and an input end of the load, the second end of the fourth capacitor is connected with the first end of the fourth resistor, the second end of the fourth resistor is connected with the second end of the sixth inductor and another input end of the load, and the first end of the sixth inductor is connected with the second end of the fifth inductor.
7. The filter of claim 1, wherein the components of each filter circuit are identical and the connections of the components are identical.
8. The filter of claim 3, wherein capacitances in the first filtering unit, the second filtering unit, and the third filtering unit increase in sequence.
9. The filter of claim 2, wherein the current detector further comprises: a protection switch;
and the protection switch is used for switching off when the power supply voltage is greater than a preset voltage threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023332839.5U CN215378879U (en) | 2020-12-30 | 2020-12-30 | High-power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023332839.5U CN215378879U (en) | 2020-12-30 | 2020-12-30 | High-power filter |
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| Publication Number | Publication Date |
|---|---|
| CN215378879U true CN215378879U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023332839.5U Active CN215378879U (en) | 2020-12-30 | 2020-12-30 | High-power filter |
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