Intelligent power supply control circuit
By using the output detection and timing control module of the intelligent power control circuit, the risk of electric shock during connection status detection of the power control circuit is solved, and safe and efficient power transmission and connection are achieved.
Patent Information
- Application Number
- CN202423017247.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing power control circuits pose a risk of electric shock during connection status detection, resulting in low safety.
An intelligent power control circuit is adopted. The output detection module detects the connection status between the output module and the electronic device under low voltage conditions. When the connection is established, the timing control module is controlled to start timing operation, the power control module stops power transmission, and power is restored after the timing ends. The feedback adjustment module provides a feedback signal to ensure that the voltage adjustment module is powered normally.
It improves the intelligence and safety of the power control circuit, avoids the risk of electric shock to users when connecting electronic devices, and ensures a safe connection process.
Smart Images
Figure CN223797927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power control technology, specifically an intelligent power control circuit. Background Technology
[0002] A power supply is a device that converts other forms of energy into electrical energy and provides power to electronic devices. To improve the intelligence of power supplies, existing power control circuits can automatically supply power when connected to electronic devices. Specifically, a low voltage is provided at the power output terminal of the power control circuit to detect the connection status between the power output port and the electronic device. After connection with the electronic device, the power supply is automatically controlled to supply power normally. Although the electrical energy detected in advance is at a low voltage, there is still a risk of electric shock during connection status detection, resulting in low safety of the power control circuit. Therefore, it needs to be improved. Utility Model Content
[0003] This utility model provides an intelligent power control circuit to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] An intelligent power control circuit includes: a power module, a power control module, a voltage regulation module, an output module, an output detection module, a feedback regulation module, and a timing control module.
[0006] The power module is used to receive AC power and rectify and filter the AC power to output the first electrical energy.
[0007] A power control module, connected to the power module, voltage regulation module and timing control module, is used to transmit the first electrical energy to the voltage regulation module and stop transmitting the first electrical energy when it receives a timing signal output by the timing control module.
[0008] A voltage regulation module, connected to the feedback regulation module, is used to receive a first feedback signal or a second feedback signal output by the feedback regulation module and perform DC-DC regulation on the input first electrical energy to output the second electrical energy.
[0009] An output module, connected to the voltage regulation module, is used to receive second electrical energy and power connected electronic devices;
[0010] An output detection module, connected to the output module and the power module, is used to receive the first electrical energy, detect the connection status between the output module and the electronic device, and output a first control signal when the output module is connected to the electronic device.
[0011] The feedback adjustment module, connected to the output detection module, is used to divide the second electrical energy and output a first feedback signal. When the first control signal is received, the second electrical energy is divided and a second feedback signal is output.
[0012] The timing control module, connected to the output detection module and the power supply module, is used to set the timing time. When the first electrical energy is received and the first control signal is received, the timing control module starts to work and outputs a timing signal in a high-level state.
[0013] As a further embodiment of this utility model: the power module includes a power interface, a first rectifier, and a first capacitor; the power control module includes a first resistor, a first power transistor, and a first switching transistor;
[0014] Preferably, the first and second ends of the power interface are respectively connected to the first and second ends of the first rectifier, the third end of the first rectifier is connected to one end of the first capacitor and the drain of the first power transistor, and is connected to the collector of the first switching transistor and the gate of the first power transistor through the first resistor, the source of the first power transistor is connected to the voltage regulation module, the fourth end of the first rectifier, the other end of the first capacitor and the emitter of the first switching transistor are all grounded, and the base of the first switching transistor is connected to the timing control module.
[0015] As a further embodiment of this utility model: the voltage regulation module includes a second capacitor, a second resistor, a third resistor, a first inductor, a first regulator, a third capacitor, and a first diode;
[0016] Preferably, one end of the second capacitor is connected to the sixth terminal of the first regulator and the source of the first power transistor, and is connected to one end of the third resistor, the seventh terminal of the first regulator and one end of the first inductor through the second resistor. The other end of the first inductor is connected to the anode of the first diode and the first terminal of the first regulator. The third terminal of the first regulator is grounded through the third capacitor. The fourth and second terminals of the first regulator are both grounded. The fifth terminal of the first regulator is connected to the feedback regulation module. The cathode of the first diode is connected to the output module.
[0017] As a further embodiment of this utility model: the output module includes an output port; the output detection module includes a first optocoupler, a ninth resistor, an eighth resistor, and a second diode;
[0018] Preferably, the first end of the output port is connected to the cathode of the first diode, the second end of the output port is connected to the first end of the first optocoupler, the second end of the first optocoupler and the anode of the second diode are both grounded, the third end of the first optocoupler is connected to the cathode of the second diode and connected to the third end of the first rectifier through the eighth resistor, the fourth end of the first optocoupler is connected to the timing control module and the first end of the ninth resistor, and the second end of the ninth resistor is grounded.
[0019] As a further embodiment of this utility model: the feedback adjustment module includes a fourth resistor, a second switch, a fifth resistor, a sixth resistor, a third switch, and a seventh resistor;
[0020] Preferably, the emitter of the second switch is connected to the collector of the third switch and the fifth terminal of the first regulator, and is connected to the cathode of the first diode through a fourth resistor. The collector of the second switch is grounded through a fifth resistor. The base of the second switch is connected to the base of the third switch and the fourth terminal of the first optocoupler, and is grounded through a sixth resistor. The emitter of the third switch is grounded through a seventh resistor.
[0021] As a further embodiment of this utility model: the timing control module includes a tenth resistor, a first logic chip, a third diode, a fourth switching transistor, a fourth diode, an eleventh resistor, a fourth capacitor, a first timer, and a fifth capacitor;
[0022] Preferably, terminal A of the first logic chip is connected to the collector of the fourth switching transistor and the third terminal of the first rectifier through the tenth resistor; terminal F of the first logic chip is connected to the anode of the third diode and the base of the fourth switching transistor; terminal B of the first logic chip is connected to the cathode of the third diode and the first terminal of the ninth resistor; the emitter of the fourth switching transistor is connected to the cathode of the fourth diode, one end of the eleventh resistor, the fourth terminal and the eighth terminal of the first timer; the anode of the fourth diode is connected to the other end of the eleventh resistor, the second terminal and the sixth terminal of the first timer and grounded through the fourth capacitor; the fifth terminal of the first timer is grounded through the fifth capacitor; the first terminal of the first timer is grounded; and the third terminal of the first timer is connected to the base of the first switching transistor.
[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: The intelligent power control circuit of this utility model uses an output detection module to detect whether the output module is connected to the electronic device when the voltage regulation module provides a low voltage. When the output module is connected to the electronic device, the output detection module will control the timing control module to start timing operation. During the timing operation, the power control module stops power transmission, and at this time it is in a power-off state, which allows the user to safely connect the electronic device to the output module. After the timing ends, the power control module resumes power supply and changes the feedback signal provided by the feedback regulation module, so that the voltage regulation module can resume normal power supply operation, thereby improving the intelligence and safety of the power control circuit. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic block diagram of an intelligent power control circuit provided as an example of the present invention.
[0026] Figure 2 A circuit diagram of an intelligent power control circuit provided for this utility model embodiment.
[0027] Figure 3 The connection circuit diagram of the timing control module provided for this utility model embodiment. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In one embodiment, see Figure 1 An intelligent power control circuit includes: a power module 1, a power control module 2, a voltage regulation module 3, an output module 4, an output detection module 5, a feedback regulation module 6, and a timing control module 7.
[0030] Specifically, power module 1 is used to connect to AC power and perform rectification and filtering on the AC power to output the first power.
[0031] The power control module 2 is connected to the power module 1, the voltage regulation module 3 and the timing control module 7, and is used to transmit the first electrical energy to the voltage regulation module 3. When the timing signal output by the timing control module 7 is received, the transmission of the first electrical energy is stopped.
[0032] Voltage regulation module 3 is connected to the feedback regulation module 6 and is used to receive the first feedback signal or the second feedback signal output by the feedback regulation module 6 and perform DC-DC regulation on the input first electrical energy to output the second electrical energy.
[0033] Output module 4, connected to voltage regulation module 3, is used to receive the second electrical energy and power the connected electronic devices;
[0034] The output detection module 5 is connected to the output module 4 and the power module 1. It is used to receive the first electrical energy, detect the connection status between the output module 4 and the electronic device, and output the first control signal when the output module 4 is connected to the electronic device.
[0035] Feedback adjustment module 6, connected to the output detection module 5, is used to divide the second electrical energy and output a first feedback signal. When the first control signal is received, the second electrical energy is divided and a second feedback signal is output.
[0036] The timing control module 7 is connected to the output detection module 5 and the power supply module 1. It is used to set the timing time. When it receives the first electrical energy and the first control signal, it starts timing operation and outputs a timing signal in a high-level state.
[0037] In a specific embodiment, the power module 1 can be a power circuit composed of a power interface, a rectifier, and a capacitor, which can accept AC power and perform rectification and filtering on the AC power; the power control module 2 can be a power control circuit composed of a resistor, a field-effect transistor, and a transistor, which can control the transmission state of the power; the voltage regulation module 3 can be a voltage regulation circuit composed of a resistor, a DC-DC regulating device, an inductor, etc., which performs DC-DC regulation on the input power according to the feedback signal provided by the feedback regulation module 6; the output module 4 can be an output circuit composed of an output port, which is connected to electronic equipment; the output detection module 5 can be an output detection module composed of an optocoupler, a resistor, and a diode. The system can detect the power transmission status of the output port and then determine the connection status between the output module 4 and the electronic device. The feedback adjustment module 6 can be a feedback adjustment circuit composed of transistors and resistors, which can provide a first feedback signal to control the voltage adjustment module 3 to provide the low voltage required when detecting the connection status between the output module 4 and the electronic device. It can also provide a second feedback signal to control the voltage adjustment module 3 to operate normally. The timing control module 7 can be a timing control circuit composed of logic chips, diodes, timers, transistors, etc. It can set the timing time and, when the power module 1 is powered, if the output module 4 is connected to the electronic device, it will start timing operation and control the power control module 2 to cut off power at regular intervals.
[0038] In another embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The power module 1 includes a power interface, a first rectifier T1 and a first capacitor C1; the power control module 2 includes a first resistor R1, a first power transistor Q1 and a first switching transistor V1.
[0039] Specifically, the first and second ends of the power interface are connected to the first and second ends of the first rectifier T1, respectively. The third end of the first rectifier T1 is connected to one end of the first capacitor C1 and the drain of the first power transistor Q1, and is connected to the collector of the first switching transistor V1 and the gate of the first power transistor Q1 through the first resistor R1. The source of the first power transistor Q1 is connected to the voltage regulation module 3. The fourth end of the first rectifier T1, the other end of the first capacitor C1, and the emitter of the first switching transistor V1 are all grounded. The base of the first switching transistor V1 is connected to the timing control module 7.
[0040] In a specific embodiment, the first power transistor Q1 can be an N-channel MOSFET; the first switching transistor V1 can be an NPN transistor.
[0041] Furthermore, the voltage regulation module 3 includes a second capacitor C2, a second resistor R2, a third resistor R3, a first inductor L1, a first regulator IC1, a third capacitor C3, and a first diode D1;
[0042] Specifically, one end of the second capacitor C2 is connected to the sixth terminal of the first regulator IC1 and the source of the first power transistor Q1, and is connected to one end of the third resistor R3, the seventh terminal of the first regulator IC1 and one end of the first inductor L1 through the second resistor R2. The other end of the first inductor L1 is connected to the anode of the first diode D1 and the first terminal of the first regulator IC1. The third terminal of the first regulator IC1 is grounded through the third capacitor C3. The fourth and second terminals of the first regulator IC1 are both grounded. The fifth terminal of the first regulator IC1 is connected to the feedback regulation module 6. The cathode of the first diode D1 is connected to the output module 4.
[0043] In a specific embodiment, the first regulator IC1 mentioned above can be an MC34063 integrated chip.
[0044] Furthermore, the output module 4 includes an output port; the output detection module 5 includes a first optocoupler J1, a ninth resistor R9, an eighth resistor R8, and a second diode D2;
[0045] Specifically, the first end of the output port is connected to the cathode of the first diode D1, the second end of the output port is connected to the first end of the first optocoupler J1, the second end of the first optocoupler J1 and the anode of the second diode D2 are both grounded, the third end of the first optocoupler J1 is connected to the cathode of the second diode D2 and connected to the third end of the first rectifier T1 through the eighth resistor R8, the fourth end of the first optocoupler J1 is connected to the timing control module 7 and the first end of the ninth resistor R9, and the second end of the ninth resistor R9 is grounded.
[0046] In a specific embodiment, the first optocoupler J1 can be a PC817 optocoupler.
[0047] Furthermore, the feedback adjustment module 6 includes a fourth resistor R4, a second switch V2, a fifth resistor R5, a sixth resistor R6, a third switch V3, and a seventh resistor R7;
[0048] Specifically, the emitter of the second switch V2 is connected to the collector of the third switch V3 and the fifth terminal of the first regulator IC1, and is connected to the cathode of the first diode D1 through the fourth resistor R4. The collector of the second switch V2 is grounded through the fifth resistor R5. The base of the second switch V2 is connected to the base of the third switch V3 and the fourth terminal of the first optocoupler J1, and is grounded through the sixth resistor R6. The emitter of the third switch V3 is grounded through the seventh resistor R7.
[0049] In a specific embodiment, the second switch V2 can be a PNP transistor, which, together with the fourth resistor R4 and the fifth resistor R5, provides the first feedback signal; the third switch V3 can be an NPN transistor, which, together with the fourth resistor R4 and the seventh resistor R7, provides the second feedback signal.
[0050] Furthermore, the timing control module 7 includes a tenth resistor R10, a first logic chip J2, a third diode D3, a fourth switch D4, a fourth diode V4, an eleventh resistor R11, a fourth capacitor C4, a first timer IC2, and a fifth capacitor C5.
[0051] Specifically, terminal A of the first logic chip J2 is connected to the collector of the fourth switch D4 and the third terminal of the first rectifier T1 through the tenth resistor R10. Terminal F of the first logic chip J2 is connected to the anode of the third diode D3 and the base of the fourth switch D4. Terminal B of the first logic chip J2 is connected to the cathode of the third diode D3 and the first terminal of the ninth resistor R9. The emitter of the fourth switch D4 is connected to the cathode of the fourth diode V4, one end of the eleventh resistor R11, and the fourth and eighth terminals of the first timer IC2. The anode of the fourth diode V4 is connected to the other end of the eleventh resistor R11, the second and sixth terminals of the first timer IC2, and grounded through the fourth capacitor C4. The fifth terminal of the first timer IC2 is grounded through the fifth capacitor C5. The first terminal of the first timer IC2 is grounded. The third terminal of the first timer IC2 is connected to the base of the first switch V1.
[0052] In a specific embodiment, the first logic chip J2 can be an AND gate chip, which can perform self-locking processing on the high-level signal input to the B terminal of the first logic chip J2 when powered by the power module 1; the fourth switch D4 can be an NPN transistor; the first timer IC2 can be an NE555 chip, which, together with the fourth diode V4, the eleventh resistor R11, the fourth capacitor C4 and the fifth capacitor C5, can output a high-level signal at regular intervals when receiving power, and output a low-level signal after the timing ends.
[0053] In this embodiment of an intelligent power control circuit, AC power is connected through a power interface. The first rectifier T1 and the first capacitor C1 perform rectification and filtering. At this time, because the sixth resistor R6 is grounded, the second switch V2 is turned on. The fourth resistor R4, together with the second switch V2 and the fifth resistor R5, provides a first feedback signal to the fifth terminal of the first regulator IC1. The first power transistor Q1 transmits the processed signal to the first regulator IC1, enabling the first regulator IC1, in conjunction with the second resistor R2, the third resistor R3, the first inductor L1, the third capacitor C3, the first diode D1, and the first feedback signal, to perform DC-DC regulation on the transmitted power, thereby outputting a low voltage. This low voltage is used to detect the connection status between the output port and the electronic device. When the output port is connected to the electronic device, the first optocoupler J1 is turned on, and simultaneously, the B terminal of the first logic chip J2 becomes high. The F terminal of the first logic chip J2 outputs a high level and controls the fourth switch D4 to turn on, energizing the first timer IC2. Transistor V4, eleventh resistor R11, fourth capacitor C4, and fifth capacitor C5 output a high-level signal at the timer, which triggers the first switch V1 to conduct and the first power transistor Q1 to turn off. At this time, the first regulator IC1 stops working. To avoid the risk of electric shock caused by connecting the output port to the user and to facilitate the user to safely connect the output port to the electronic device, after the timing ends, the third terminal of the first timer IC2 outputs a low level, the first power transistor Q1 turns on again, the first regulator IC1 is powered on again, and since the output port is connected to the electronic device, the first optocoupler J1 conducts, which makes the third switch V3 conduct and the second switch V2 turn off. The third switch V3, together with the fourth resistor R4 and the seventh resistor R7, provides the second feedback signal to the first regulator IC1. The first regulator IC1 normally provides regulated power to the output port. After the power interface stops receiving AC power, the F terminal of the first logic chip J2 will output a low level again, so that the first timer IC2 can restart the timing operation.
[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0055] 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. An intelligent power supply control circuit, characterized in that, the intelligent power supply control circuit comprises a power module, a power control module, a voltage regulation module, an output module, an output detection module, a feedback regulation module and a timing control module; the power module is configured to access alternating current power and perform rectification and filtering on the alternating current power to output first power; the power control module is connected with the power module, the voltage regulation module and the timing control module, and configured to transmit the first power to the voltage regulation module, and stop transmitting the first power when receiving a timing signal output by the timing control module; the voltage regulation module is connected with the feedback regulation module, and configured to receive a first feedback signal or a second feedback signal output by the feedback regulation module and perform DC-DC regulation on the input first power to output second power; the output module is connected with the voltage regulation module, and configured to receive the second power and supply power to connected electronic devices; the output detection module is connected with the output module and the power module, and configured to receive the first power, detect a connection state of the output module and the electronic devices, and output a first control signal when the output module is connected with the electronic devices; the feedback regulation module is connected with the output detection module, and configured to divide the second power and output the first feedback signal, and divide the second power and output the second feedback signal when receiving the first control signal; the timing control module is connected with the output detection module and the power module, and configured to set a timing time, start timing work and output a timing signal in a high level state when receiving the first power and receiving the first control signal.
2. The intelligent power control circuit of claim 1, wherein, the power module comprises a power interface, a first rectifier and a first capacitor; the power control module comprises a first resistor, a first power tube and a first switch tube; a first end and a second end of the power interface are connected with a first end and a second end of the first rectifier respectively, a third end of the first rectifier is connected with one end of the first capacitor and a drain of the first power tube, and the first power tube is connected with a collector of the first switch tube and a gate of the first power tube through a first resistor, a source of the first power tube is connected with the voltage regulation module, a fourth end of the first rectifier, the other end of the first capacitor and an emitter of the first switch tube are grounded, and a base of the first switch tube is connected with the timing control module.
3. The intelligent power control circuit of claim 2, wherein, the voltage regulation module comprises a second capacitor, a second resistor, a third resistor, a first inductor, a first regulator, a third capacitor and a first diode; one end of the second capacitor is connected with a sixth end of the first regulator and a source of the first power tube, and connected with one end of the third resistor, a seventh end of the first regulator and one end of the first inductor through a second resistor, the other end of the first inductor is connected with an anode of the first diode and a first end of the first regulator, a third end of the first regulator is grounded through the third capacitor, a fourth end and a second end of the first regulator are grounded, a fifth end of the first regulator is connected with the feedback regulation module, and a cathode of the first diode is connected with the output module.
4. The intelligent power control circuit of claim 3, wherein, the output module comprises an output port; and the output detection module comprises a first optocoupler, a ninth resistor, an eighth resistor and a second diode. The first end of the output port is connected with the cathode of the first diode, the second end of the output port is connected with the first end of the first optocoupler, the second end of the first optocoupler and the anode of the second diode are grounded, the third end of the first optocoupler is connected with the cathode of the second diode and the third end of the first rectifier through the eighth resistor, the fourth end of the first optocoupler is connected with the timing control module and the first end of the ninth resistor, and the second end of the ninth resistor is grounded.
5. The intelligent power control circuit of claim 4, wherein, The feedback adjusting module comprises a fourth resistor, a second switch tube, a fifth resistor, a sixth resistor, a third switch tube and a seventh resistor. The emitter of the second switch tube is connected with the collector of the third switch tube and the fifth end of the first regulator and connected with the cathode of the first diode through the fourth resistor, the collector of the second switch tube is grounded through the fifth resistor, the base of the second switch tube is connected with the base of the third switch tube and the fourth end of the first optocoupler and grounded through the sixth resistor, and the emitter of the third switch tube is grounded through the seventh resistor.
6. The intelligent power control circuit of claim 5, wherein, The timing control module comprises a tenth resistor, a first logic chip, a third diode, a fourth switch tube, a fourth diode, an eleventh resistor, a fourth capacitor, a first timer and a fifth capacitor. The A end of the first logic chip is connected with the collector of the fourth switch tube and the third end of the first rectifier through the tenth resistor, the F end of the first logic chip is connected with the anode of the third diode and the base of the fourth switch tube, the B end of the first logic chip is connected with the cathode of the third diode and the first end of the ninth resistor, the emitter of the fourth switch tube is connected with the cathode of the fourth diode, one end of the eleventh resistor, the fourth end and the eighth end of the first timer, the anode of the fourth diode is connected with the other end of the eleventh resistor, the second end and the sixth end of the first timer and grounded through the fourth capacitor, the fifth end of the first timer is grounded through the fifth capacitor, the first end of the first timer is grounded, and the third end of the first timer is connected with the base of the first switch tube.