A low voltage electric appliance voltage self-adapting conversion control circuit
Patent Information
- Application Number
- CN202611265434.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-20
- Publication Date
- 2026-10-27
AI Technical Summary
[0002]目前，为满足低压设备的用电需求，一般会采用由分压电阻、比较器、参考电源和场效应管组成的自适应电压控制电路，可通过比较器比较参考电源设定的电压阈值和分压电阻分压后输出的电能的电压大小，调节场效应管的导通状态，继而维持恒压供电，但是该自适应电压控制电路的输入电压宽度较小，在输入电压超过最大输入电压或小于最小输入电压时，都将无法正常供电，且在出现掉电时，无法继续维持供电状态，因此有待改进
[0011]与现有技术相比，本发明的有益效果是：本发明低压电器电压自适应转换控制电路可由微控制模块控制自适应调节模块对电源模块接入的直流电能进行恒压调节处理并为连接的低压设备供电，由电源模块检测直流电能与电压阈值的差值是否大于差值阈值，并在大于差值阈值且直流电能大于电压阈值时，微控制模块将交替控制功率调节模块中的两组储能电容进行交替储能和降压，为自适应调节模块供电，同时由储能控制模块进行交替存储两组储能电容释放的电能，在大于差值阈值且直流电能小于电压阈值时，将控制储能控制模块与电源模块进行电能叠加处理并为自适应调节模块供电，增加低压设备的输入电压宽度，当差值等于电压阈值时，将控制功率调节模块传输储能控制模块释放的电能并为自适应调节模块进行备用供电，提高对低压设备的供电效率。
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Figure CN122993449A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of low-voltage electrical appliance technology, specifically a low-voltage electrical appliance voltage adaptive conversion control circuit. Background Technology
[0002] Currently, to meet the power requirements of low-voltage equipment, an adaptive voltage control circuit consisting of a voltage divider resistor, a comparator, a reference power supply, and a field-effect transistor is generally used. The comparator compares the voltage threshold set by the reference power supply with the voltage output after voltage division by the voltage divider resistor, and adjusts the conduction state of the field-effect transistor to maintain a constant voltage power supply. However, the input voltage width of this adaptive voltage control circuit is small. When the input voltage exceeds the maximum input voltage or is less than the minimum input voltage, it will not be able to supply power normally. In addition, it cannot continue to maintain the power supply state when a power failure occurs. Therefore, it needs to be improved. Summary of the Invention
[0003] This invention provides a low-voltage electrical appliance voltage adaptive conversion control circuit to solve the problems mentioned in the background art.
[0004] According to an embodiment of the present invention, a low-voltage electrical appliance voltage adaptive switching control circuit is provided, comprising: The power module, connected to the adaptive adjustment module, is used to receive and transmit DC power. It performs voltage division sampling on the DC power and subtracts and performs absolute value processing on the sampled signal and the voltage threshold set by the adaptive adjustment module to output a difference signal. When the difference signal is greater than the set difference threshold, the DC power is greater than the voltage threshold, and the DC power is less than the voltage threshold, the first detection signal is output. When the DC power is less than the voltage threshold, the second detection signal is output. The power regulation module, connected to the power supply module, energy storage control module and adaptive regulation module, is used to receive DC power and store it through two sets of energy storage capacitors in an alternating series connection. It also outputs the first power and transmits the backup power released by the energy storage control module to the adaptive regulation module. The energy storage control module is connected to the power supply module. It is used to control the discharge of the energy storage capacitor in the non-energy storage state and store the electrical energy released by the energy storage capacitor. It releases the stored electrical energy and provides backup electrical energy. It performs voltage superposition processing on the backup electrical energy and DC electrical energy and outputs a second electrical energy. An adaptive regulation module is used to transmit backup power from a first power module, a second power module, or a power regulation module, and to perform adaptive voltage regulation on the DC power, the first power module, the second power module, or the backup power from the power regulation module according to a set voltage threshold, and then transmit the processed power to the connected low-voltage equipment. The microcontroller module, connected to the energy storage control module, power supply module, power regulation module, and adaptive regulation module, is used to control the adaptive regulation module to receive DC power. When a first detection signal is received, the adaptive regulation module stops transmitting DC power and alternately controls the two sets of energy storage capacitors in the power regulation module to perform energy storage and controls the energy storage control module to perform energy storage. When a second detection signal is received, the adaptive regulation module stops transmitting DC power and controls the energy storage control module to perform voltage superposition. When the received difference signal equals the voltage threshold, the power regulation module transmits backup power.
[0005] As a further embodiment of the present invention: the power supply module includes a power port, a first capacitor and a first diode; the adaptive adjustment module includes a seventh power transistor, a fourth diode, a first resistor, a second resistor, a first operational amplifier, a first reference power supply, a tenth power transistor, a fifth capacitor and a low-voltage device interface; the microcontroller module includes a first controller; Preferably, the first terminal of the power supply port is connected to the anode of the first diode and the first terminal of the first capacitor; the cathode of the first diode is connected to the drain of the seventh power transistor; the source of the seventh power transistor is connected to the anode of the fourth diode; the cathode of the fourth diode is connected to the drain of the tenth power transistor and connected to the inverting terminal of the first operational amplifier and one end of the second resistor through the first resistor; the non-inverting terminal of the first operational amplifier is connected to the first reference power supply; the output terminal of the first operational amplifier is connected to the gate of the tenth power transistor; the source of the tenth power transistor is connected to the first terminal of the low-voltage device interface and connected to the second terminal of the low-voltage device interface, the other end of the second terminal, the second power supply of the first capacitor, the second terminal of the power supply port, and the ground terminal through the fifth capacitor; and the gate of the seventh power transistor is connected to the IO1 terminal of the first controller.
[0006] As a further embodiment of the present invention: the power regulation module includes a third power transistor, a third diode, a fourth power transistor, a fifth power transistor, a fourth capacitor, a third capacitor, and a ninth power transistor; Preferably, the source of the third power transistor is connected to the drain of the seventh power transistor, the drain of the third power transistor is connected to the drain of the fifth power transistor and the drain of the fourth power transistor, the source of the fifth power transistor is connected to the first terminal of the third capacitor, the source of the fourth power transistor is connected to the first terminal of the fourth capacitor, the second terminal of the third capacitor is connected to the second terminal of the fourth capacitor, the drain of the ninth power transistor and the anode of the third diode, the source of the ninth power transistor is connected to the second terminal of the power supply port, the gate of the third power transistor is connected to the gate of the ninth power transistor and the IO4 terminal of the first controller, the gates of the fourth power transistor and the gates of the fifth power transistor are respectively connected to the IO3 and IO2 terminals of the first controller, and the cathode of the third diode is connected to the cathode of the fourth diode.
[0007] As a further embodiment of the present invention: the energy storage control module includes a sixth power transistor, a second power transistor, and an auxiliary battery; Preferably, the drain of the sixth power transistor and the drain of the second power transistor are respectively connected to the first terminal of the third capacitor and the first terminal of the fourth capacitor, the source of the sixth power transistor is connected to the source of the second power transistor and the first terminal of the auxiliary battery, the second terminal of the auxiliary battery is connected to the second terminal of the fourth capacitor, and the gate of the sixth power transistor is connected to the IO2 terminal and the IO3 terminal of the first controller.
[0008] As a further embodiment of the present invention: the energy storage control module further includes a first power transistor, an eighth power transistor, a second diode, and a second capacitor; Preferably, the drain of the first power transistor is connected to the first terminal of the auxiliary battery, the source of the first power transistor is connected to the anode of the second diode and connected to the first terminal of the first capacitor and the source of the eighth power transistor through the second capacitor, the drain of the eighth power transistor is connected to the second terminal of the auxiliary battery, the cathode of the second diode is connected to the cathode of the first diode, and the gate of the first power transistor is connected to the gate of the eighth power transistor and the IO5 terminal of the first controller.
[0009] As a further embodiment of the present invention: the power module further includes a third resistor, a fourth resistor, and a subtraction processor; Preferably, the first end of the third resistor is connected to the first end of the power supply port, the second end of the third resistor is connected to the first input end of the subtraction processor and is connected to the second end of the power supply port through the fourth resistor, the second input end of the subtraction processor is connected to the first reference power supply, and the output end of the subtraction processor is connected to the IO6 terminal of the first controller.
[0010] As a further embodiment of the present invention: the power module further includes a first comparator, a second reference power supply, a second comparator, a third comparator, a first logic unit, and a second logic unit; Preferably, the non-inverting input of the first comparator is connected to the output of the subtraction processor, the inverting input of the first comparator is connected to the second reference power supply, the output of the first comparator is connected to the A terminal of the first logic device and the A terminal of the second logic device, the non-inverting input of the second comparator is connected to the second terminal of the third resistor and the inverting input of the third comparator, the inverting input of the second comparator is connected to the non-inverting input of the third comparator and the first reference power supply, the outputs of the second comparator and the third comparator are respectively connected to the B terminal of the first logic device and the B terminal of the second logic device, and the Y terminal of the first logic device and the Y terminal of the second logic device are respectively connected to the IO7 and IO8 terminals of the first controller.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: The low-voltage electrical appliance voltage adaptive conversion control circuit of the present invention can be controlled by a microcontroller module to perform constant voltage regulation on the DC power input to the power supply module and supply power to the connected low-voltage equipment. The power supply module detects whether the difference between the DC power and the voltage threshold is greater than the difference threshold. When the difference threshold is greater and the DC power is greater than the voltage threshold, the microcontroller module will alternately control the two sets of energy storage capacitors in the power regulation module to alternately store energy and reduce voltage to supply power to the adaptive regulation module. At the same time, the energy storage control module alternately stores the electrical energy released by the two sets of energy storage capacitors. When the difference threshold is greater than the DC power and the voltage threshold is less than the voltage threshold, the energy storage control module and the power supply module will be controlled to perform electrical energy superposition processing to supply power to the adaptive regulation module, increasing the input voltage width of the low-voltage equipment. When the difference is equal to the voltage threshold, the power regulation module will be controlled to transmit the electrical energy released by the energy storage control module and provide backup power to the adaptive regulation module, thereby improving the power supply efficiency to the low-voltage equipment. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic block diagram of a low-voltage electrical appliance voltage adaptive conversion control circuit provided in an embodiment of the present invention.
[0014] Figure 2 The circuit diagram is provided for a low-voltage electrical appliance voltage adaptive conversion control circuit according to an embodiment of the present invention.
[0015] Figure 3 This is a first circuit diagram of a power module provided in an embodiment of the present invention.
[0016] Figure 4 This is a second circuit diagram of a power module provided in an embodiment of the present invention. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] In one embodiment, see Figure 1A low-voltage electrical appliance voltage adaptive switching control circuit, comprising: Power module 1, connected to adaptive adjustment module 4, is used to receive and transmit DC power. It performs voltage division sampling on the DC power and subtracts the sampled signal from the voltage threshold set by adaptive adjustment module 4 and performs absolute value processing to output a difference signal. When the difference signal is greater than the set difference threshold, if the DC power is greater than the voltage threshold, a first detection signal is output; if the DC power is less than the voltage threshold, a second detection signal is output. The power regulation module 2 is connected to the power supply module 1, the energy storage control module 3 and the adaptive regulation module 4. It is used to receive DC power and store the power through two sets of energy storage capacitors in an alternating series connection, and output the first power. It also transmits the backup power released by the energy storage control module 3 to the adaptive regulation module 4. The energy storage control module 3 is connected to the power supply module 1. It is used to control the discharge of the energy storage capacitor in the non-energy storage state and store the electrical energy released by the energy storage capacitor, release the stored electrical energy and provide backup electrical energy, and perform voltage superposition processing on the backup electrical energy and DC electrical energy to output a second electrical energy. The adaptive adjustment module 4 is used to transmit the first power, the second power, or the backup power transmitted by the power adjustment module 2, and to perform adaptive voltage adjustment processing on the DC power, the first power, the second power, or the backup power transmitted by the power adjustment module 2 according to the set voltage threshold, and then transmit the processed power to the connected low-voltage equipment. The microcontroller module 5 is connected to the energy storage control module 3, the power supply module 1, the power regulation module 2, and the adaptive regulation module 4. It is used to control the adaptive regulation module 4 to receive DC power. When it receives the first detection signal, it controls the adaptive regulation module 4 to stop transmitting DC power and alternately control the two sets of energy storage capacitors in the power regulation module 2 to perform energy storage and control the energy storage control module 3 to perform energy storage. When it receives the second detection signal, it controls the adaptive regulation module 4 to stop transmitting DC power and controls the energy storage control module 3 to perform voltage superposition. When the received difference signal is equal to the voltage threshold, it controls the power regulation module 2 to transmit backup power.
[0019] In a specific embodiment, the power module 1 can be a power circuit composed of a power port, diodes, a subtraction processor, a comparator, etc., which can receive and transmit DC power, perform voltage division sampling on the DC power, subtract and perform absolute value processing with the voltage threshold set by the adaptive adjustment module 4, and compare the processed signal with the difference threshold to determine whether the DC power is greater than the maximum or minimum input voltage of the adaptive adjustment module 4; the power adjustment module 2 can be a power adjustment circuit composed of field-effect transistors, diodes, and capacitors, which can change the power transmission path, and store and output power through two sets of energy storage capacitors in an alternating series connection; the energy storage control module 3 can... The energy storage control circuit, composed of field-effect transistors, auxiliary batteries, and capacitors, can perform energy storage, release the stored electrical energy, and perform superposition processing with the power supply module 1. The aforementioned adaptive adjustment module 4 can be composed of resistors, field-effect transistors, capacitors, operational amplifiers, low-voltage equipment interfaces, etc., and can perform power transmission, voltage division sampling, and constant voltage adjustment according to a set voltage threshold to supply power to the connected low-voltage equipment. The voltage threshold is the operating voltage of the low-voltage equipment. The aforementioned microcontroller module 5 can be composed of a microcontroller circuit, which integrates many components such as an arithmetic unit, a controller, a memory, and input / output devices to realize functions such as signal processing, data storage, module control, and timing control.
[0020] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 The power module 1 includes a power port, a first capacitor C1, and a first diode D1; the adaptive adjustment module 4 includes a seventh power transistor Q7, a fourth diode D4, a first resistor R1, a second resistor R2, a first operational amplifier OP1, a first reference power supply VF1, a tenth power transistor Q10, a fifth capacitor C5, and a low-voltage device interface; the microcontroller module 5 includes a first controller U1. Specifically, the first end of the power supply port is connected to the anode of the first diode D1 and the first end of the first capacitor C1. The cathode of the first diode D1 is connected to the drain of the seventh power transistor Q7. The source of the seventh power transistor Q7 is connected to the anode of the fourth diode D4. The cathode of the fourth diode D4 is connected to the drain of the tenth power transistor Q10 and is connected to the inverting terminal of the first operational amplifier OP1 and one end of the second resistor R2 through the first resistor R1. The non-inverting terminal of the first operational amplifier OP1 is connected to the first reference power supply VF1. The output terminal of the first operational amplifier OP1 is connected to the gate of the tenth power transistor Q10. The source of the tenth power transistor Q10 is connected to the first end of the low-voltage device interface and is connected to the second end of the low-voltage device interface, the other end of the second terminal, the second power supply of the first capacitor C1, the second end of the power supply port, and the ground terminal through the fifth capacitor C5. The gate of the seventh power transistor Q7 is connected to the IO1 terminal of the first controller U1.
[0021] In a specific embodiment, both the seventh power transistor Q7 and the tenth power transistor Q10 can be N-channel field-effect transistors. The seventh power transistor Q7 is used for power transmission, and the tenth power transistor Q10 is used for constant voltage regulation. The first operational amplifier OP1 can be an OP07 operational amplifier. The first reference power supply VF1 provides a voltage threshold. The first controller U1 can be an STM32 microcontroller.
[0022] Furthermore, the power regulation module 2 includes a third power transistor Q3, a third diode D3, a fourth power transistor Q4, a fifth power transistor Q5, a fourth capacitor C4, a third capacitor C3, and a ninth power transistor Q9; Specifically, the source of the third power transistor Q3 is connected to the drain of the seventh power transistor Q7, the drain of the third power transistor Q3 is connected to the drain of the fifth power transistor Q5 and the drain of the fourth power transistor Q4, the source of the fifth power transistor Q5 is connected to the first terminal of the third capacitor C3, the source of the fourth power transistor Q4 is connected to the first terminal of the fourth capacitor C4, the second terminal of the third capacitor C3 is connected to the second terminal of the fourth capacitor C4, the drain of the ninth power transistor Q9 and the anode of the third diode D3, the source of the ninth power transistor Q9 is connected to the second terminal of the power supply port, the gate of the third power transistor Q3 is connected to the gate of the ninth power transistor Q9 and the IO4 terminal of the first controller U1, the gate of the fourth power transistor Q4 and the gate of the fifth power transistor Q5 are respectively connected to the IO3 and IO2 terminals of the first controller U1, and the cathode of the third diode D3 is connected to the cathode of the fourth diode D4.
[0023] In a specific embodiment, the third power transistor Q3, the fourth power transistor Q4, the fifth power transistor Q5, and the ninth power transistor Q9 can all be N-channel field-effect transistors. The third power transistor Q3 and the ninth power transistor Q9 are used for discharge control, and the fourth power transistor Q4 and the fifth power transistor Q5 are used for alternating energy storage control. The third capacitor C3 and the fourth capacitor C4 can be used as energy storage capacitors.
[0024] Furthermore, the energy storage control module 3 includes a sixth power transistor Q6, a second power transistor Q2, and an auxiliary battery; Specifically, the drain of the sixth power transistor Q6 and the drain of the second power transistor Q2 are connected to the first terminal of the third capacitor C3 and the first terminal of the fourth capacitor C4, respectively. The source of the sixth power transistor Q6 is connected to the source of the second power transistor Q2 and the first terminal of the auxiliary battery. The second terminal of the auxiliary battery is connected to the second terminal of the fourth capacitor C4. The gate of the sixth power transistor Q6 and the gate of the second power transistor Q2 are connected to the IO2 terminal and the IO3 terminal of the first controller U1, respectively.
[0025] In a specific embodiment, both the sixth power transistor Q6 and the second power transistor Q2 can be N-channel MOSFETs, which alternately control the auxiliary battery for energy storage; the auxiliary battery can be a lithium battery.
[0026] Furthermore, the energy storage control module 3 also includes a first power transistor Q1, an eighth power transistor Q8, a second diode D2, and a second capacitor C2; Specifically, the drain of the first power transistor Q1 is connected to the first terminal of the auxiliary battery, the source of the first power transistor Q1 is connected to the anode of the second diode D2 and is connected to the first terminal of the first capacitor C1 and the source of the eighth power transistor Q8 through the second capacitor C2, the drain of the eighth power transistor Q8 is connected to the second terminal of the auxiliary battery, the cathode of the second diode D2 is connected to the cathode of the first diode D1, and the gate of the first power transistor Q1 is connected to the gate of the eighth power transistor Q8 and the IO5 terminal of the first controller U1.
[0027] In a specific embodiment, both the first power transistor Q1 and the eighth power transistor Q8 can be N-channel field-effect transistors, which discharge and provide power to the second capacitor C2.
[0028] Furthermore, the power module 1 also includes a third resistor R3, a fourth resistor R4, and a subtraction processor; Specifically, the first end of the third resistor R3 is connected to the first end of the power supply port, the second end of the third resistor R3 is connected to the first input end of the subtraction processor and is connected to the second end of the power supply port through the fourth resistor R4, the second input end of the subtraction processor is connected to the first reference power supply VF1, and the output end of the subtraction processor is connected to the IO6 end of the first controller U1.
[0029] In a specific embodiment, the above-mentioned subtraction processor may consist of a subtractor and an absolute value device to perform subtraction and absolute value processing.
[0030] Furthermore, the power module 1 also includes a first comparator A1, a second reference power supply VF2, a second comparator A2, a third comparator A3, a first logic unit J1, and a second logic unit J2; Specifically, the non-inverting input of the first comparator A1 is connected to the output of the subtraction processor, the inverting input of the first comparator A1 is connected to the second reference power supply VF2, the output of the first comparator A1 is connected to the A terminal of the first logic device J1 and the A terminal of the second logic device J2, the non-inverting input of the second comparator A2 is connected to the second terminal of the third resistor R3 and the inverting input of the third comparator A3, the inverting input of the second comparator A2 is connected to the non-inverting input of the third comparator A3 and the first reference power supply VF1, the outputs of the second comparator A2 and the third comparator A3 are respectively connected to the B terminal of the first logic device J1 and the B terminal of the second logic device J2, and the Y terminal of the first logic device J1 and the Y terminal of the second logic device J2 are respectively connected to the IO7 and IO8 terminals of the first controller U1.
[0031] In a specific embodiment, the first comparator A1, the second comparator A2, and the third comparator A3 can all be LM358 comparators; the second reference power supply VF2 can provide a difference threshold. When the signal output by the subtraction processor is greater than the difference threshold, it indicates that the DC power is greater than the maximum input voltage of the adaptive adjustment module 4 or less than the minimum input voltage; the first logic unit J1 and the second logic unit J2 can both be AND gates.
[0032] The working principle of a low-voltage electrical appliance voltage adaptive conversion control circuit of the present invention is as follows: DC power is input through the power interface. The IO1 terminal of the first controller U1 controls the seventh power transistor Q7 to conduct. The DC power is transmitted through the first diode D1, the seventh power transistor Q7, and the fourth diode D4, so that the first resistor R1 and the second resistor R2 perform voltage division sampling. In conjunction with the first operational amplifier OP1 and the first reference power supply VF1, the voltage is compared to adjust the conduction state of the tenth power transistor Q10, thereby performing constant voltage regulation, and then supplying power to the low-voltage equipment connected to the low-voltage equipment interface. The third resistor R3 and the fourth resistor R4 perform voltage division sampling of the DC power, and the DC power is then... The subtraction processor performs subtraction and absolute value processing on the sampled signal and voltage threshold, and outputs a difference signal, which is received by the IO6 terminal of the first controller U1. Simultaneously, the difference signal is compared with the difference threshold through the first comparator A1 and the second reference power supply VF2. If the DC power is greater than the voltage threshold while the difference signal is greater than the difference threshold, the second comparator A2, in conjunction with the first logic unit J1, outputs a first detection signal, which is received by the IO7 terminal of the first controller U1. At this time, the IO3 and IO2 terminals of the first controller U1 will alternately control the fourth power transistor Q4 and the fifth power transistor Q5 to conduct, causing the fourth capacitor C4 and the third capacitor C3 to... Alternating energy storage and voltage reduction are performed. The third diode D3 supplies power to the adaptive adjustment module 4. Simultaneously, the IO3 and IO2 terminals alternately control the sixth power transistor Q6 and the second power transistor Q2 to conduct, thereby controlling the auxiliary battery to alternately store the energy released by the third capacitor C3 or the second capacitor C2. If the DC energy is less than the voltage threshold, the third comparator A3, in conjunction with the second logic unit J2, outputs a second detection signal, which is received by the IO8 terminal of the first controller U1. The IO5 terminal of the first controller U1 then controls the eighth power transistor Q8 and the first power transistor Q1 to conduct, causing the auxiliary battery to release the stored energy and store it in the second capacitor C2. The DC power stored in the second capacitor C2 and the first capacitor C1 is superimposed on each other, and the second power is output through the second diode D2. The adaptive adjustment module 4 regulates the second power at a constant voltage. If the difference signal received by the IO6 terminal of the first controller U1 is equal to the voltage threshold, it indicates that the power port may have lost power. The IO4 terminal of the first controller U1 will control the third power transistor Q3 and the ninth power transistor Q9 to be turned on, so that the auxiliary battery forms a circuit with the adaptive adjustment module 4 through the second power transistor Q2, the fourth power transistor Q4, the third power transistor Q3 and the ninth power transistor Q9 to supply power to the adaptive adjustment module 4.
[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A low-voltage electrical appliance voltage adaptive conversion control circuit, characterized in that, The circuit includes: The power module, connected to the adaptive adjustment module, is used to receive and transmit DC power. It performs voltage division sampling on the DC power and subtracts and performs absolute value processing on the sampled signal and the voltage threshold set by the adaptive adjustment module to output a difference signal. When the difference signal is greater than the set difference threshold, the DC power is greater than the voltage threshold, and the DC power is less than the voltage threshold, the first detection signal is output. When the DC power is less than the voltage threshold, the second detection signal is output. The power regulation module, connected to the power supply module, energy storage control module and adaptive regulation module, is used to receive DC power and store it through two sets of energy storage capacitors in an alternating series connection. It also outputs the first power and transmits the backup power released by the energy storage control module to the adaptive regulation module. The energy storage control module is connected to the power supply module. It is used to control the discharge of the energy storage capacitor in the non-energy storage state and store the electrical energy released by the energy storage capacitor. It releases the stored electrical energy and provides backup electrical energy. It performs voltage superposition processing on the backup electrical energy and DC electrical energy and outputs a second electrical energy. An adaptive regulation module is used to transmit backup power from a first power module, a second power module, or a power regulation module, and to perform adaptive voltage regulation on the DC power, the first power module, the second power module, or the backup power from the power regulation module according to a set voltage threshold, and then transmit the processed power to the connected low-voltage equipment. The microcontroller module, connected to the energy storage control module, power supply module, power regulation module, and adaptive regulation module, is used to control the adaptive regulation module to receive DC power. When a first detection signal is received, the adaptive regulation module stops transmitting DC power and alternately controls the two sets of energy storage capacitors in the power regulation module to perform energy storage and controls the energy storage control module to perform energy storage. When a second detection signal is received, the adaptive regulation module stops transmitting DC power and controls the energy storage control module to perform voltage superposition. When the received difference signal equals the voltage threshold, the power regulation module transmits backup power.
2. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 1, characterized in that, The power supply module includes a power port, a first capacitor, and a first diode; the adaptive adjustment module includes a seventh power transistor, a fourth diode, a first resistor, a second resistor, a first operational amplifier, a first reference power supply, a tenth power transistor, a fifth capacitor, and a low-voltage device interface; the microcontroller module includes a first controller. The first end of the power supply port is connected to the anode of the first diode and the first end of the first capacitor. The cathode of the first diode is connected to the drain of the seventh power transistor. The source of the seventh power transistor is connected to the anode of the fourth diode. The cathode of the fourth diode is connected to the drain of the tenth power transistor and is connected to the inverting input of the first operational amplifier and one end of the second resistor through the first resistor. The non-inverting input of the first operational amplifier is connected to the first reference power supply. The output end of the first operational amplifier is connected to the gate of the tenth power transistor. The source of the tenth power transistor is connected to the first end of the low-voltage device interface and is connected to the second end of the low-voltage device interface, the other end of the second interface, the second power supply of the first capacitor, the second end of the power supply port, and the ground terminal through the fifth capacitor. The gate of the seventh power transistor is connected to the IO1 terminal of the first controller.
3. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 2, characterized in that, The power regulation module includes a third power transistor, a third diode, a fourth power transistor, a fifth power transistor, a fourth capacitor, a third capacitor, and a ninth power transistor. The source of the third power transistor is connected to the drain of the seventh power transistor. The drain of the third power transistor is connected to the drain of the fifth power transistor and the drain of the fourth power transistor. The source of the fifth power transistor is connected to the first terminal of the third capacitor. The source of the fourth power transistor is connected to the first terminal of the fourth capacitor. The second terminal of the third capacitor is connected to the second terminal of the fourth capacitor, the drain of the ninth power transistor, and the anode of the third diode. The source of the ninth power transistor is connected to the second terminal of the power supply port. The gate of the third power transistor is connected to the gate of the ninth power transistor and the IO4 terminal of the first controller. The gates of the fourth power transistor and the fifth power transistor are respectively connected to the IO3 and IO2 terminals of the first controller. The cathode of the third diode is connected to the cathode of the fourth diode.
4. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 3, characterized in that, The energy storage control module includes a sixth power transistor, a second power transistor, and an auxiliary battery; The drain of the sixth power transistor and the drain of the second power transistor are respectively connected to the first terminal of the third capacitor and the first terminal of the fourth capacitor. The source of the sixth power transistor is connected to the source of the second power transistor and the first terminal of the auxiliary battery. The second terminal of the auxiliary battery is connected to the second terminal of the fourth capacitor. The gate of the sixth power transistor and the gate of the second power transistor are respectively connected to the IO2 terminal and the IO3 terminal of the first controller.
5. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 4, characterized in that, The energy storage control module also includes a first power transistor, an eighth power transistor, a second diode, and a second capacitor; The drain of the first power transistor is connected to the first terminal of the auxiliary battery. The source of the first power transistor is connected to the anode of the second diode and is connected to the first terminal of the first capacitor and the source of the eighth power transistor through the second capacitor. The drain of the eighth power transistor is connected to the second terminal of the auxiliary battery. The cathode of the second diode is connected to the cathode of the first diode. The gate of the first power transistor is connected to the gate of the eighth power transistor and the IO5 terminal of the first controller.
6. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 2, characterized in that, The power module also includes a third resistor, a fourth resistor, and a subtraction processor; The first end of the third resistor is connected to the first end of the power supply port, the second end of the third resistor is connected to the first input end of the subtraction processor and is connected to the second end of the power supply port through the fourth resistor, the second input end of the subtraction processor is connected to the first reference power supply, and the output end of the subtraction processor is connected to the IO6 terminal of the first controller.
7. The low-voltage electrical appliance voltage adaptive conversion control circuit according to claim 6, characterized in that, The power module further includes a first comparator, a second reference power supply, a second comparator, a third comparator, a first logic unit, and a second logic unit; The non-inverting input of the first comparator is connected to the output of the subtraction processor, the inverting input of the first comparator is connected to the second reference power supply, the output of the first comparator is connected to the A terminal of the first logic device and the A terminal of the second logic device, the non-inverting input of the second comparator is connected to the second terminal of the third resistor and the inverting input of the third comparator, the inverting input of the second comparator is connected to the non-inverting input of the third comparator and the first reference power supply, the outputs of the second comparator and the outputs of the third comparator are respectively connected to the B terminal of the first logic device and the B terminal of the second logic device, and the Y terminal of the first logic device and the Y terminal of the second logic device are respectively connected to the IO7 and IO8 terminals of the first controller.