Power supply device, radio frequency power supply, electric equipment and system
By designing the output switching circuit of the power supply device, using multiple switching units to realize the output of multiple power supply signals, the problems of low efficiency and difficulty in realizing multiple outputs of existing coated RF power supplies are solved, and the working efficiency is improved and cost savings are saved.
Patent Information
- Application Number
- CN202420168349.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-01-23
AI Technical Summary
The existing coated RF power supplies have problems such as wasting and difficulty in achieving multiple outputs, especially due to the existence of pulsed applications, which leads to low efficiency.
A power supply device is designed, including a rectifier circuit, an isolation circuit and an output switching circuit. The output switching circuit uses at least one output switching module to realize the output of multiple power supply signals using multiple switching units, and only one isolation circuit is required.
The output of multiple power supply signals is realized, the working efficiency of the power supply device is improved, cost savings, and the demand for additional isolation circuits is avoided.
Smart Images
Figure CN222638394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power supply, in particular to a power supply device, a radio frequency power supply, an electrical equipment and a system. Background Art
[0002] With the unstoppable arrival of the green energy wave, the proportion of photovoltaic energy has been greatly increased in recent years, and the output of photovoltaic panels in my country has increased year by year. One of the key equipment in the photovoltaic panel production line is the coated RF power supply. At present, the existing coated RF power supply mainly adopts a single rectifier stage plus two isolated output stages to achieve dual-channel output. Both output stages are pulse applications, which has certain waste and is difficult to achieve multiple outputs. Utility Model Content
[0003] According to one aspect of the present invention, a power supply device is provided, the device comprising:
[0004] A rectifier circuit, used to rectify the input AC signal and output a DC signal;
[0005] An isolation circuit, connected to the rectifier circuit, for isolating and outputting the DC signal;
[0006] Output switching circuit, comprising:
[0007] At least one output switching module, each of which includes a first switch unit and a second switch unit,
[0008] For any output switching module, the first end of the first switch unit is connected to the positive output end of the isolation circuit, the first end of the second switch unit is connected to the negative output end of the isolation circuit, the second end of the first switch unit is connected to the positive output end of the output switching module, and the second end of the second switch unit is connected to the negative output end of the output switching module. The positive output end of the output switching module and the negative output end of the output switching module are used to output a power supply signal.
[0009] Wherein, the control end of the first switch unit and the control end of the second switch unit are used to receive a first control signal.
[0010] In a possible implementation manner, the output switching circuit further includes:
[0011] a third switch unit, wherein a first end of the third switch unit is connected to a second end of the first switch unit and a positive output end of the output switching module, and a second end of the third switch unit is connected to a second end of the second switch unit and a negative output end of the output switching module,
[0012] The control end of the third switch unit is used to receive a second control signal, the first control signal and the second control signal are in a logical negation relationship, and the first control signal and the second control signal are separated by a first time length.
[0013] In a possible implementation manner, the first switch unit, the second switch unit, and the third switch unit all include a front-stage transistor and a rear-stage transistor.
[0014] The source of the previous transistor serves as the first terminal of the corresponding switch unit.
[0015] The drain of the front-stage transistor is connected to the source of the rear-stage transistor, and the drain of the rear-stage transistor serves as the second end of the corresponding switch unit.
[0016] The gate of the preceding transistor is connected to the gate of the succeeding transistor as control terminals of corresponding switch units.
[0017] In a possible implementation manner, the first switch unit, the second switch unit, and the third switch unit all include a front-stage diode and a rear-stage diode.
[0018] The cathode of the front-stage diode is connected to the source of the front-stage transistor, and the cathode of the rear-stage diode is connected to the drain of the rear-stage transistor.
[0019] The anode of the front-stage diode is connected to the anode of the rear-stage diode, the drain of the front-stage transistor and the source of the rear-stage transistor.
[0020] In a possible implementation, each output switching module includes a positive output switch and a negative output switch, wherein the positive output switch is arranged at the positive output end of the output switching module, and the negative output switch is arranged at the negative output end of the output switching module.
[0021] In a possible implementation, control signals of the output switching modules have different phases, and the control signals include a first control signal and a second control signal.
[0022] In a possible implementation, the control signal includes a first control signal and a second control signal, the phase difference between the first control signals of adjacent output switching modules is 360° / N, and the phase difference between the second control signals of adjacent output switching modules is 360° / N, where N is the total number of the output switching modules.
[0023] In a possible implementation manner, the first control signal and the second control signal are both square waves.
[0024] According to one aspect of the utility model, a radio frequency power supply is provided, and the radio frequency power supply includes the power supply device.
[0025] According to one aspect of the utility model, an electric device is provided, and the electric device includes the radio frequency power supply.
[0026] According to one aspect of the utility model, a power consumption system is provided, and the power consumption system includes the power consumption device.
[0027] The embodiment of the utility model is to set an output switching circuit including at least one output switching module, each output switching module includes a first switch unit and a second switch unit. For any output switching module, the first end of the first switch unit is connected to the positive output end of the isolation circuit, the first end of the second switch unit is connected to the negative output end of the isolation circuit, the second end of the first switch unit is connected to the positive output end of the output switching module, and the second end of the second switch unit is connected to the negative output end of the output switching module. The positive output end of the output switching module and the negative output end of the output switching module are used to output power supply signals, so that the output of multiple power supply signals can be realized, and only one isolation circuit is required, thereby improving the working efficiency of the power supply device and saving costs.
[0028] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present invention. Other features and aspects of the present invention will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present utility model and are used together with the specification to illustrate the technical solution of the present utility model.
[0030] Figure 1 A block diagram of a power supply device according to an embodiment of the utility model is shown.
[0031] Figure 2 A block diagram of a power supply device according to an embodiment of the utility model is shown.
[0032] Figure 3 A schematic diagram of an output switching circuit of a power supply device according to an embodiment of the utility model is shown. DETAILED DESCRIPTION
[0033] Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0034] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0037] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0038] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.
[0039] In addition, in order to better illustrate the utility model, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the utility model can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the utility model.
[0040] See also Figure 1 , Figure 1 A block diagram of a power supply device according to an embodiment of the utility model is shown.
[0041] like Figure 1 As shown, the device comprises:
[0042] The rectifier circuit 10 is used to rectify the input alternating current signal (AC) and output a direct current signal (DC);
[0043] An isolation circuit 20, connected to the rectifier circuit 10, for isolating and outputting the DC signal;
[0044] The output switching circuit 30 comprises:
[0045] At least one output switching module 310, each output switching module 310 includes a first switch unit 3110 and a second switch unit 3120,
[0046] For any output switching module 310, the first end of the first switch unit 3110 is connected to the positive output end (+) of the isolation circuit 20, the first end of the second switch unit 3120 is connected to the negative output end (-) of the isolation circuit 20, the second end of the first switch unit 3110 is connected to the positive output end (CHOUT+) of the output switching module 310, the second end of the second switch unit 3120 is connected to the negative output end (CHOUT-) of the output switching module 310, the positive output end (CHOUT+) of the output switching module 310 and the negative output end (CHOUT-) of the output switching module 310 are used to output a power supply signal.
[0047] The control end of the first switch unit 3110 and the control end of the second switch unit 3120 are used to receive a first control signal S1.
[0048] In the embodiment of the utility model, an output switching circuit 30 is provided to include at least one output switching module 310, and each output switching module 310 includes a first switch unit 3110 and a second switch unit 3120. For any output switching module 310, a first end of the first switch unit 3110 is connected to the positive output end of the isolation circuit 20, a first end of the second switch unit 3120 is connected to the negative output end of the isolation circuit 20, a second end of the first switch unit 3110 is connected to the positive output end (CHOUT+) of the output switching module 310, and a second end of the second switch unit 3120 is connected to the negative output end (CHOUT-) of the output switching module 310. The positive output end (CHOUT+) of the output switching module 310 and the negative output end (CHOUT-) of the output switching module 310 are used to output power supply signals, so that the output of multiple power supply signals can be realized, and only one isolation circuit 20 is required, thereby improving the working efficiency of the power supply device and saving costs.
[0049] The embodiment of the utility model does not limit the specific implementation of the rectifier circuit 10 and the isolation circuit 20. Those skilled in the art can set it according to the actual situation and needs. For example, the rectifier circuit 10 can include a half-bridge rectifier circuit and a full-bridge rectifier circuit, and the isolation circuit 20 can be implemented by isolation methods such as mutual inductor isolation, photoelectric isolation, transformer isolation, and transmission line isolation. Those skilled in the art can refer to the relevant technology for the specific circuit design of the rectifier circuit 10 and the isolation circuit 20. The embodiment of the utility model does not limit the function of the isolation circuit 20. The isolation circuit 20 is not limited to realizing isolated output, and can also adjust the waveform according to the actual situation and needs, such as the adjustment of amplitude and frequency. Those skilled in the art can set it according to the actual situation and needs.
[0050] The embodiment of the utility model does not limit the number of output switching modules 310 in the output switching circuit 30. For example, the number of output switching modules 310 can be 2, 3, or more. The embodiment of the utility model can achieve any expansion of the number of output switching circuits 30 by encapsulating the first switch unit 3110 and the second switch unit 3120 as modules. Those skilled in the art can expand the number of output channels of the output switching circuit 30 according to actual conditions and needs, thereby improving flexibility. In addition, this design does not require the provision of additional isolation circuits 20 and rectification circuits 10, which is conducive to further cost savings.
[0051] See also Figure 2 , Figure 2 A block diagram of a power supply device according to an embodiment of the utility model is shown.
[0052] In a possible implementation, Figure 2As shown, the output switching circuit may further include:
[0053] A third switch unit 3130, wherein a first end of the third switch unit 3130 is connected to a second end of the first switch unit 3110 and a positive output end of the output switching module, and a second end of the third switch unit 3130 is connected to a second end of the second switch unit 3120 and a negative output end of the output switching module.
[0054] The control end of the third switch unit 3130 is used to receive a second control signal S2, the first control signal S1 and the second control signal S2 are in a logical negation relationship, and the first control signal and the second control signal are separated by a first time length.
[0055] Exemplarily, the first time length can be 0, that is, the first control signal and the second control signal act synchronously on the corresponding switch unit; of course, the first time length may not be 0, for example, the first time length may be a dead zone interval. Of course, the embodiment of the utility model does not limit the specific dead zone interval duration, and technical personnel in this field can set it according to actual conditions and needs. The embodiment of the utility model does not limit this, and technical personnel in this field can set it according to actual conditions and needs.
[0056] The embodiment of the utility model does not limit the specific implementation method of the first switch unit 3110, the second switch unit 3120, and the third switch unit 3130. Those skilled in the art can set them according to actual conditions and needs. The preferred implementation methods of the first switch unit 3110, the second switch unit 3120, and the third switch unit 3130 are exemplarily introduced below.
[0057] See also Figure 3 , Figure 3 A schematic diagram of an output switching circuit of a power supply device according to an embodiment of the utility model is shown.
[0058] In a possible implementation, Figure 3 As shown, the first switch unit 3110, the second switch unit 3120, and the third switch unit 3130 may include a front-stage transistor Q1 and a rear-stage transistor Q2.
[0059] The source of the front-stage transistor Q1 serves as the first terminal of the corresponding switch unit.
[0060] The drain of the front-stage transistor Q1 is connected to the source of the rear-stage transistor Q2, and the drain of the rear-stage transistor Q2 serves as the second end of the corresponding switch unit.
[0061] The gate of the front-stage transistor Q1 is connected to the gate of the rear-stage transistor Q2 as control terminals of corresponding switch units.
[0062] The embodiment of the utility model does not limit the specific transistor types of the front-stage transistor Q1 and the rear-stage transistor Q2. Those skilled in the art can use suitable transistors to implement them according to actual conditions and needs. For example, the front-stage transistor Q1 and the rear-stage transistor Q2 can be metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT), etc., wherein the transistors can be implemented based on silicon carbide SiC and gallium nitride GaN to improve performance.
[0063] In a possible implementation, Figure 3 As shown, the first switch unit 3110, the second switch unit 3120, and the third switch unit 3130 may include a front-stage diode D1 and a rear-stage diode D2.
[0064] The cathode of the front-stage diode D1 is connected to the source of the front-stage transistor Q1, and the cathode of the rear-stage diode D2 is connected to the drain of the rear-stage transistor Q2.
[0065] The anode of the front-stage diode D1 is connected to the anode of the rear-stage diode D2 , the drain of the front-stage transistor Q1 , and the source of the rear-stage transistor Q2 .
[0066] The embodiment of the utility model can avoid signal backflow and improve the safety and reliability of the power supply device by setting the front-stage diode D1 and the rear-stage diode D2 in the first switch unit 3110, the second switch unit 3120, and the third switch unit 3130.
[0067] In a possible implementation, Figure 3 As shown, each output switching module 310 may include a positive output switch SPST2 and a negative output switch SPST3, wherein the positive output switch SPST2 is arranged at the positive output end of the output switching module 310 (for example, CH1OUT+ in the output switching module 1), and the negative output switch SPST3 is arranged at the negative output end of the output switching module 310 (for example, CH1OUT- in the output switching module 1).
[0068] The embodiment of the utility model does not limit the specific switch types of the positive output switch SPST2 and the negative output switch SPST3, and those skilled in the art can set them according to actual conditions and needs. Exemplarily, the positive output switch SPST2 and the negative output switch SPST3 may include any one of a relay, a reed switch, a thyristor, a switching diode, a switching transistor, an electronic bidirectional switch, a photocoupler, a transistor, etc. The transistor may be a metal-oxide semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), wherein the transistor may be based on silicon carbide SiC, gallium nitride GaN to improve performance. Preferably, the positive output switch SPST2 and the negative output switch SPST3 may both be relays.
[0069] The embodiment of the utility model can ensure the conduction and disconnection of the output and the load by setting the positive output switch SPST2 and the negative output switch SPST3. When it is necessary to disconnect the output and the load of the power supply device, it can ensure that the output and the load are completely disconnected, thereby improving safety and reliability.
[0070] In a possible implementation, the control signals of each output switching module 310 have different phases, and the control signals include a first control signal S1 and a second control signal S2. By setting the control signals of each output switching module 310 to have different phases, the embodiment of the utility model can realize the independent operation of each output switching module 310 to avoid interference. For example,
[0071] In a possible implementation, the control signal includes a first control signal and a second control signal, the phase difference between the first control signals of adjacent output switching modules is 360° / N, and the phase difference between the second control signals of adjacent output switching modules is 360° / N, where N is the total number of the output switching modules 310. For example, Figure 3 As shown, if N is 2, the phases of the first control signal of the first output switching module 310 and the first control signal of the second output switching module 310 are staggered by 180°, and the phases of the second control signal of the first output switching module 310 and the second control signal of the second output switching module 310 are staggered by 180°. It should be understood that Figure 3 Although an example of two output switching modules 310 is given, the embodiments of the present invention are not limited thereto. The number of the output switching modules 310 is arbitrary, and those skilled in the art can set it according to actual conditions and needs.
[0072] In a possible implementation, the first control signal S1 and the second control signal S2 may both be square waves, or sinusoidal waves, trapezoidal waves, etc. Exemplarily, the first control signal S1 and the second control signal S2 may be separated by a first time (which may be a dead zone interval).
[0073] The embodiment of the utility model does not limit the specific method of obtaining the second control signal S2. For example, the embodiment of the utility model can perform a logic inversion operation on the first control signal S1 to obtain the second control signal S2. The logic inversion operation can be implemented by a logic NOT gate, an inverter, etc. The embodiment of the utility model does not limit the frequency and duty cycle of the control signal of each output switching module 310. The frequency and duty cycle of the control signal of each output switching module 310 can be set according to actual conditions and needs. They can be the same or different.
[0074] The power supply device of the embodiment of the utility model may further include a signal generating module to generate control signals for each output switching module 310. Of course, the embodiment of the utility model does not limit the specific method of generating the control signal, for example, it can be achieved by a square wave generator, a PWM generator, etc.
[0075] Of course, the signal generating module may also include a processing component, illustratively, the processing component includes but is not limited to a separate processor, or a discrete component, or a combination of a processor and a discrete component. The processor may include a controller having an execution instruction function in an electronic device, and the processor may be implemented in any appropriate manner, for example, by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components. Inside the processor, it can be implemented by hardware circuits such as logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers.
[0076] According to one aspect of the utility model, a radio frequency power supply is provided, and the radio frequency power supply includes the power supply device.
[0077] The embodiment of the utility model does not limit the specific type of the RF power supply. For example, the RF current source may be a film-coated RF power supply.
[0078] According to one aspect of the utility model, an electric device is provided, and the electric device includes the radio frequency power supply.
[0079] The embodiments of the present utility model do not limit the specific types of electrical equipment. For example, the electrical equipment may be electrical equipment in a photovoltaic panel production line, or may be electrical equipment in the fields of semiconductors, LEDs, wafers, etc. For example, it may be etching equipment, thin film deposition equipment, etc. Of course, the electrical equipment may also be electrical equipment in the fields of nuclear magnetic resonance, radiofrequency ablation, etc., and the embodiments of the present utility model do not limit this.
[0080] According to one aspect of the utility model, a power consumption system is provided, and the power consumption system includes the power consumption device.
[0081] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A power supply device, characterized in that: The device comprises: A rectifier circuit, used to rectify the input AC signal and output a DC signal; An isolation circuit, connected to the rectifier circuit, for isolating and outputting the DC signal; Output switching circuit, comprising: At least one output switching module, each of which includes a first switch unit and a second switch unit, For any output switching module, the first end of the first switch unit is connected to the positive output end of the isolation circuit, the first end of the second switch unit is connected to the negative output end of the isolation circuit, the second end of the first switch unit is connected to the positive output end of the output switching module, and the second end of the second switch unit is connected to the negative output end of the output switching module. The positive output end of the output switching module and the negative output end of the output switching module are used to output a power supply signal. Wherein, the control end of the first switch unit and the control end of the second switch unit are used to receive a first control signal.
2. The device according to claim 1, characterized in that The output switching circuit further includes: a third switch unit, wherein a first end of the third switch unit is connected to a second end of the first switch unit and a positive output end of the output switching module, and a second end of the third switch unit is connected to a second end of the second switch unit and a negative output end of the output switching module, The control end of the third switch unit is used to receive a second control signal, the first control signal and the second control signal are in a logical negation relationship, and the first control signal and the second control signal are separated by a first time length.
3. The device according to claim 2, characterized in that The first switch unit, the second switch unit, and the third switch unit each include a front-stage transistor and a rear-stage transistor. The source of the previous transistor serves as the first terminal of the corresponding switch unit. The drain of the front-stage transistor is connected to the source of the rear-stage transistor, and the drain of the rear-stage transistor serves as the second end of the corresponding switch unit. The gate of the preceding transistor is connected to the gate of the succeeding transistor as control terminals of corresponding switch units.
4. The device according to claim 3, characterized in that The first switch unit, the second switch unit, and the third switch unit each include a front-stage diode and a rear-stage diode. The cathode of the front-stage diode is connected to the source of the front-stage transistor, and the cathode of the rear-stage diode is connected to the drain of the rear-stage transistor. The anode of the front-stage diode is connected to the anode of the rear-stage diode, the drain of the front-stage transistor and the source of the rear-stage transistor.
5. The device according to any one of claims 1 to 4, characterized in that: Each output switching module includes a positive output switch and a negative output switch. The positive output switch is arranged at the positive output end of the output switching module, and the negative output switch is arranged at the negative output end of the output switching module.
6. The device according to claim 2, characterized in that The control signals of the output switching modules have different phases, and the control signals include a first control signal and a second control signal.
7. The device according to claim 2, characterized in that The control signal includes a first control signal and a second control signal. The phase difference between the first control signals of adjacent output switching modules is 360° / N, and the phase difference between the second control signals of adjacent output switching modules is 360° / N, where N is the total number of the output switching modules.
8. The device according to claim 2, characterized in that The first control signal and the second control signal are both square waves.
9. A radio frequency power supply, characterized in that: The radio frequency power supply comprises the power supply device according to any one of claims 1 to 8.
10. An electrical device, characterized in that: The power-consuming device includes the radio frequency power supply as claimed in claim 9.
11. An electricity system, characterized in that: The power consumption system comprises the power consumption device as claimed in claim 10.