Power management circuit and basin faucet

Abstract

The utility model discloses a power management circuit and a wash basin faucet. The power management circuit comprises a switch module; the voltage processing module comprises a battery voltage input end, an enabling end and a voltage output end, the battery voltage input end is electrically connected with the battery voltage output end to receive a battery voltage signal from the battery voltage output end, and the enabling end is electrically connected with the switch module; the voltage processing module is conducted after receiving the enable signal of the switch module, and outputs a battery voltage signal through a voltage output end; the buck-boost module comprises a logic gate unit, the logic gate unit comprises a logic input end and a logic output end, the logic input end is electrically connected with the voltage output end, and the logic gate unit performs boost or buck logic gate control after receiving a battery voltage signal through the logic input end; and a battery voltage signal after voltage boosting or voltage reduction is output through the logic output end. The power supply can output stable voltage.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent flushing technical field especially, relate to a power management circuit and basin faucet. BACKGROUND

[0002] The intelligent flushing equipment is a kind of bathroom equipment using modern science and technology to realize flushing function, such as intelligent shower, basin faucet etc.Intelligent flushing equipment needs power supply to realize intelligent flushing function after stable power supply, that is, whether the stability of power supply affects the performance of intelligent flushing equipment.With the development of technology, the power supply of intelligent flushing equipment is more and more various.

[0003] In related art, in the scene according to battery power supply, battery pack can be single battery, double battery or multi-battery, and the type of battery can be dry battery, lithium battery and other batteries.The difference of these battery parameters will affect the power management circuit, and the power management circuit needs to reasonably design the circuit according to the battery type and configuration actually used to ensure that the load is provided with stable and reliable voltage supply.Intelligent flushing equipment can only be powered according to the mode of constant battery voltage, but the output voltage of battery will be affected when the number of battery is different, so that the circuit cannot output stable voltage, which ultimately affects the performance of intelligent flushing equipment. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a power management circuit and basin faucet, which can output stable voltage.

[0005] The power management circuit according to the first aspect of the utility model comprises: a switch module; a voltage processing module, the voltage processing module comprises a battery voltage input end, an enable end and a voltage output end, the battery voltage input end is electrically connected with the battery voltage output end to receive the battery voltage signal from the battery voltage output end, the enable end is electrically connected with the switch module, wherein the voltage processing module is turned on after receiving the enable signal of the switch module, and outputs the battery voltage signal through the voltage output end; a boost-buck module, the boost-buck module comprises a logic gate unit, the logic gate unit comprises a logic input end and a logic output end, the logic input end is electrically connected with the voltage output end, wherein the logic gate unit is controlled by boost or buck logic gate after receiving the battery voltage signal through the logic input end, and outputs the battery voltage signal after boost or buck through the logic output end.

[0006] In some embodiments, the logic gate unit further comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a logic control unit, a first inductor and a voltage comparator, wherein a first pole of the first switch tube is electrically connected with the logic input terminal, a second pole of the first switch tube is electrically connected with a first end of the first inductor, a third pole of the first switch tube is electrically connected with the logic control unit, a first pole of the second switch tube is electrically connected with the first end of the first inductor, a second pole of the second switch tube is electrically connected with the logic control unit, a third pole of the second switch tube is grounded, a first pole of the third switch tube is electrically connected with a second end of the first inductor, a second pole of the third switch tube is electrically connected with the logic control unit, a third pole of the third switch tube is grounded, a first pole of the fourth switch tube is electrically connected with the second end of the first inductor, a second pole of the fourth switch tube is electrically connected with the logic control unit, a third pole of the fourth switch tube is electrically connected with the logic output terminal, an input terminal of the voltage comparator is electrically connected with the logic output terminal, and an output terminal of the voltage comparator is electrically connected with the logic control unit.

[0007] In some embodiments, the voltage processing module further comprises a fifth switch tube, a sixth switch tube, a seventh switch tube, an eighth switch tube and a ninth switch tube, wherein a first pole of the fifth switch tube is electrically connected with the enable terminal, a second pole of the fifth switch tube is grounded, a third pole of the fifth switch tube is electrically connected with a second pole of the sixth switch tube, a first pole of the sixth switch tube is electrically connected with the battery voltage input terminal, a third pole of the sixth switch tube is electrically connected with a first pole of the eighth switch tube, a first pole of the seventh switch tube is electrically connected with a third pole of the sixth switch tube, a second pole of the seventh switch tube is electrically connected with a second pole of the eighth switch tube or the ninth switch tube, a third pole of the seventh switch tube is grounded, a third pole of the eighth switch tube is electrically connected with a first pole of the ninth switch tube, and a third pole of the ninth switch tube is electrically connected with the voltage output terminal.

[0008] In some embodiments, the power management circuit further comprises a generator voltage module and a diode, wherein an output terminal of the generator voltage module is electrically connected with an input terminal of the diode, and an output terminal of the diode is electrically connected with the voltage output terminal.

[0009] In some embodiments, the generator voltage module comprises a rectification unit and a generator step-down unit, wherein an input terminal of the rectification unit is electrically connected with a generator, an output terminal of the rectification unit is electrically connected with an input terminal of the generator step-down unit, and an output terminal of the generator step-down unit is electrically connected with an input terminal of the diode.

[0010] In some embodiments, the power management circuit further comprises a master control module, the master control module comprising a master buck unit and a first control unit, a first end of the master buck unit being electrically connected with the voltage output end, a second end of the master buck unit being grounded, and a third end of the master buck unit being electrically connected with a first pin end of the first control unit.

[0011] In some embodiments, the power management circuit further comprises a charging module, the charging module comprising a charging switch unit and a second control unit, an input end of the charging switch unit being electrically connected with a second pin end of the first control unit, a first output end of the charging switch unit being electrically connected with a first pin end of the second control unit, a second output end of the charging switch unit being electrically connected with a second pin end of the second control unit, a third pin end of the second control unit being electrically connected with an output end of the generator voltage module, a fourth pin end of the second control unit being electrically connected with the battery voltage input end, the fourth pin end of the second control unit being electrically connected with a first end of a first resistor, a second end of the first resistor being electrically connected with a first end of a second resistor, a second end of the second resistor being grounded, and a third pin end of the first control unit being electrically connected with the first end of the second resistor.

[0012] In some embodiments, the charging switch unit comprises a tenth switch tube and an eleventh switch tube, a first pole of the tenth switch tube being electrically connected with the second pin end of the first control unit, a second pole of the tenth switch tube being grounded, a third pole of the tenth switch tube being electrically connected with a first pole of the eleventh switch tube, a second pole of the eleventh switch tube being electrically connected with the first pin end of the second control unit, and a third pole of the eleventh switch tube being electrically connected with the second pin end of the second control unit.

[0013] In some embodiments, the voltage processing module further comprises a twelfth switch tube and a thirteenth switch tube, a first pole of the twelfth switch tube being electrically connected with the output end of the generator buck unit, a second pole of the twelfth switch tube being grounded, a third pole of the twelfth switch tube being electrically connected with the battery voltage input end, a first pole of the thirteenth switch tube being electrically connected with the output end of the generator buck unit, a second pole of the thirteenth switch tube being grounded, and a third pole of the thirteenth switch tube being electrically connected with the battery voltage input end.

[0014] The face basin faucet according to the second aspect of the present application comprises the power management circuit according to the first aspect of the present application.

[0015] The power management circuit and basin faucet according to the embodiment of the utility model have at least the following beneficial effects: the power management circuit and basin faucet comprise a switch module, a voltage processing module and a voltage-lifting and voltage-lowering module, the voltage processing module comprises a battery voltage input end, an enable end and a voltage output end, the battery voltage input end is electrically connected with the battery voltage output end to receive the battery voltage signal from the battery voltage output end, the enable end is electrically connected with the switch module, the voltage processing module is turned on after receiving the enable signal of the switch module, and outputs the battery voltage signal through the voltage output end, the voltage-lifting and voltage-lowering module comprises a logic gate unit, the logic gate unit comprises a logic input end and a logic output end, the logic input end is electrically connected with the voltage output end, wherein the logic gate unit performs voltage-lifting or voltage-lowering logic gate control after receiving the battery voltage signal through the logic input end, and outputs the voltage-lifted or voltage-lowered battery voltage signal through the logic output end, the switch module controls the opening of the voltage processing module, the voltage processing module provides the battery voltage signal, and the voltage-lifting and voltage-lowering module adjusts the voltage according to the requirement, stabilizes the battery voltage signal at a fixed voltage, and can output stable voltage.

[0016] Additional aspects and advantages of the utility model will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained in connection with the drawings and embodiments, wherein:

[0018] Figure 1 The module diagram of the power management module provided for the embodiment of the utility model is shown in the figure.

[0019] Figure 2 The schematic diagram of the logic gate unit provided for the embodiment of the utility model is shown in the figure.

[0020] Figure 3 The circuit diagram of the voltage processing module provided for the embodiment of the utility model is shown in the figure.

[0021] Figure 4 The circuit diagram of the generator voltage module provided for the embodiment of the utility model is shown in the figure.

[0022] Figure 5 The circuit diagram of the generator voltage module provided for the embodiment of the utility model is shown in the figure.

[0023] Figure 6 The circuit diagram of the main control module provided for the embodiment of the utility model is shown in the figure.

[0024] Figure 7 The circuit diagram of the main control module provided for the embodiment of the utility model is shown in the figure.

[0025] Figure 8 A circuit diagram of the charging module provided by the embodiment of the present application;

[0026] Figure 9 A circuit diagram of the charging switch unit provided by the embodiment of the present application;

[0027] Figure 10 Another circuit diagram of the voltage processing module provided by the embodiment of the present application;

[0028] Figure 11 A flow chart of the power management circuit provided by the embodiment of the present application. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it is understood that, if the orientation description, such as up, down, front, back, left, right and the like, is described, the orientation or position relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and cannot be understood as a limitation of the present application.

[0031] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are included in the number. If the first and the second are described, they are only used for distinguishing the technical features for the purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0033] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The intelligent flushing device is a bathroom device that realizes the flushing function by using modern technology, such as an intelligent shower and an intelligent faucet. The intelligent flushing device needs stable power supply to realize the intelligent flushing function, that is, the stability of the power supply affects the performance of the intelligent flushing device. With the development of technology, the power supply of the intelligent flushing device is becoming more and more diverse.

[0035] In the related art, in the scene of battery power supply, the intelligent flushing device can only be powered according to the constant battery voltage, but the output voltage of the battery will be affected when the number of batteries is different, so that the circuit cannot output stable voltage, which ultimately affects the performance of the intelligent flushing device.

[0036] Therefore, the power management circuit and the basin faucet provided by the embodiments of the present application are described as follows. First, the power management circuit in the embodiments of the present application is described.

[0037] Please refer to Figure 1 The power management circuit provided by the embodiments of the present application includes:

[0038] The switching module 100;

[0039] The voltage processing module 200 includes a battery voltage input end 210, an enable end 220 and a voltage output end 230. The battery voltage input end 210 is electrically connected with the battery voltage output end 240 to receive the battery voltage signal from the battery voltage output end 240. The enable end 220 is electrically connected with the switching module 100. After receiving the enable signal of the switching module 100, the voltage processing module 200 is turned on, and outputs the battery voltage signal through the voltage output end 230.

[0040] The voltage processing module 200 includes a battery voltage input end 210, an enable end 220 and a voltage output end 230. The battery voltage input end 210 is electrically connected with the battery voltage output end 240 to receive the battery voltage signal from the battery voltage output end 240. The enable end 220 is electrically connected with the switching module 100. After receiving the enable signal of the switching module 100, the voltage processing module 200 is turned on, and outputs the battery voltage signal through the voltage output end 230. The voltage processing module 200 includes a battery voltage input end 210, an enable end 220 and a voltage output end 230. The battery voltage input end 210 is electrically connected with the battery voltage output end 240 to receive the battery voltage signal from the battery voltage output end 240. The enable end 220 is electrically connected with the switching module 100. After receiving the enable signal of the switching module 100, the voltage processing module 200 is turned on, and outputs the battery voltage signal through the voltage output end 230.

[0041] It can be understood that the switch module 100 provides an enable signal for the entire circuit, which is used to control whether the voltage processing module 200 is turned on. The switch module 100 can be a simple switch circuit, or a more intelligent microcontroller or other electronic switching device. The enable terminal 220 effectively controls the working state of the voltage processing module 200, improves the energy utilization efficiency of the entire circuit, and when power supply is not needed, the switch module 100 can be turned off to cut off the battery voltage input, avoid consuming battery power, and the load is in a completely disconnected state, and the standby power consumption is reduced under no load, for example, the standby power consumption can be less than 10uA.

[0042] For example, the battery voltage input terminal 210 of the voltage processing module 200 receives the battery voltage signal from the battery voltage output terminal 240, and when receiving the enable signal of the switch module 100, the voltage processing module 200 is turned on and outputs the battery voltage signal through the voltage output terminal 230. The voltage processing module 200 can also be called a voltage switching module, and the battery voltage input terminal 210 is electrically connected with the battery voltage output terminal 240. The electrical connection can be direct connection, or there can be other electronic elements connected between the battery voltage input terminal 210 and the battery voltage output terminal 240 to realize voltage input. The voltage processing module 200 can also include voltage buffering, filtering and other circuits to ensure that the quality of the output battery voltage signal meets the requirements of the subsequent module, and can also integrate some protection circuits such as overvoltage and overcurrent protection to ensure that the circuit is not damaged.

[0043] It can be understood that the battery voltage output terminal 240 outputs the voltage of the battery pack, which can be a single battery, a double battery or a multi-battery. The type of battery can be a dry battery, a lithium battery, etc. The difference in these battery parameters will affect the power management circuit, and the power management circuit needs to be reasonably designed according to the actual battery type and configuration to ensure that the load is provided with stable and reliable voltage power supply.

[0044] For example, the logic gate unit 310 of the voltage boosting and reducing module 300 receives the battery voltage signal output by the voltage processing module 200, performs voltage boosting or reducing adjustment according to the voltage size, and outputs the stable battery voltage signal through the logic output end 312. When the input battery voltage signal is low, the logic gate unit 310 performs voltage boosting logic to raise the input voltage to the required stable output voltage through the switch circuit of the logic gate unit 310 and the like. When the input battery voltage signal is high, the logic gate unit 310 performs voltage reducing logic to lower the input voltage to the required stable output voltage through the switch circuit of the logic gate unit 310 and the like. This adaptive voltage boosting and reducing control mode ensures that the voltage boosting and reducing module 300 can output the required stable voltage regardless of the change of the battery voltage signal, and provides reliable power supply for the load device. The voltage boosting and reducing module 300 can also integrate voltage feedback, current limiting and other protection circuits to improve the reliability and safety of the entire power management circuit.

[0045] The power management circuit provided by the embodiment of the application includes a switch module, a voltage processing module and a voltage boosting and reducing module. The voltage processing module includes a battery voltage input end, an enable end and a voltage output end. The battery voltage input end is electrically connected with the battery voltage output end to receive the battery voltage signal from the battery voltage output end, thereby ensuring to provide stable and reliable battery supply for the circuit. The enable end is electrically connected with the switch module. The voltage processing module is turned on after receiving the enable signal of the switch module, and outputs the battery voltage signal through the voltage output end. The voltage boosting and reducing module includes a logic gate unit, which includes a logic input end and a logic output end. The logic input end is electrically connected with the voltage output end. The logic gate unit performs voltage boosting or reducing logic gate control after receiving the battery voltage signal through the logic input end, and outputs the battery voltage signal after voltage boosting or reducing through the logic output end. The switch module controls the opening of the voltage processing module. The voltage processing module provides the battery voltage signal. The voltage boosting and reducing module adjusts the voltage according to the requirement to stabilize the battery voltage signal at a fixed voltage, and can output stable voltage.

[0046] Please refer to Figure 2 In some embodiments, the logic gate unit 310 further includes a first switch tube 313, a second switch tube 314, a third switch tube 315, a fourth switch tube 316, a logic control unit 317, a first inductor 318 and a voltage comparator 319.

[0047] The first pole of the first switch tube 313 is electrically connected with the logic input end 311, the second pole of the first switch tube 313 is electrically connected with the first end of the first inductor 318, the third pole of the first switch tube 313 is electrically connected with the logic control unit 317, the first pole of the second switch tube 314 is electrically connected with the first end of the first inductor 318, the second pole of the second switch tube 314 is electrically connected with the logic control unit 317, the third pole of the second switch tube 314 is grounded, the first pole of the third switch tube 315 is electrically connected with the second end of the first inductor 318, the second pole of the third switch tube 315 is electrically connected with the logic control unit 317, the third pole of the third switch tube 315 is grounded, the first pole of the fourth switch tube 316 is electrically connected with the second end of the first inductor 318, the second pole of the fourth switch tube 316 is electrically connected with the logic control unit 317, the third pole of the fourth switch tube 316 is electrically connected with the logic output end 312, the input end of the voltage comparator 319 is electrically connected with the logic output end 312, and the output end of the voltage comparator 319 is electrically connected with the logic control unit 317.

[0048] For example, the first switch tube 313, the second switch tube 314, the third switch tube 315 and the fourth switch tube 316 can be semiconductor triodes or field effect transistors. For reference Figure 2 The first switch tube 313 can be an NMOS tube, the first pole of the first switch tube 313 is a drain, the second pole is a source, and the third pole is a gate; the second switch tube 314 can be an NMOS tube, the first pole of the second switch tube 314 is a drain, the second pole is a gate, and the third pole is a source; the third switch tube 315 can be an NMOS tube, the first pole of the third switch tube 315 is a drain, the second pole is a gate, and the third pole is a source; and the fourth switch tube 316 can be an NMOS tube, the first pole of the fourth switch tube 316 is a source, the second pole is a gate, and the third pole is a drain.

[0049] For example, the logic control unit 317 controls the conduction state of the first switch tube 313, the second switch tube 314, the third switch tube 315, and the fourth switch tube 316 to realize the boost and buck control. When the boost operation needs to be performed, the logic control unit 317 makes the first switch tube 313 and the third switch tube 315 conductive. When the first switch tube 313 and the third switch tube 315 are conductive, the current at the input logic input end 311 flows through the first inductor 318, so that the first inductor 318 generates a magnetic field and stores energy. At this time, the second switch tube 314 and the fourth switch tube 316 are in the off state, and the logic output end 312 side (i.e. the load side) is disconnected from the first inductor 318. When the first switch tube 313 and the third switch tube 315 are turned off, the energy stored in the first inductor 318 is rapidly released and flows to the logic output end 312 side through the conductive second switch tube 314 and the fourth switch tube 316. Due to the inductor energy storage and release process, the voltage at the logic output end 312 can be instantaneously raised to a level higher than the input voltage, thereby realizing the boost function. When the buck operation needs to be performed, the logic control unit 317 makes the second switch tube 314 and the fourth switch tube 316 conductive. When the second switch tube 314 and the fourth switch tube 316 are conductive, the voltage is directly transmitted to the logic output end 312 through the first inductor 318. At this time, the voltage at the logic output end 312 is equal to the input voltage. When the second switch tube 314 and the fourth switch tube 316 are turned off, the magnetic field energy in the first inductor 318 is rapidly released and flows back to the logic input end 311 side through the conductive first switch tube 313 and the third switch tube 315. This switching control causes the output voltage to be less than the input voltage, thereby realizing the buck function.

[0050] It can be understood that the voltage comparator 319 monitors the output voltage at the logic output end 312 in real time and sends a feedback signal to the logic control unit 317 to ensure that the output voltage is stabilized at the target value. This closed-loop feedback control mechanism can effectively suppress the fluctuation and deviation of the output voltage, ensuring the high stability of the output voltage of the logic gate unit 310. The logic gate unit 310 can flexibly complete the boost and buck functions by switching the conduction state of different switch tubes, realize adaptive voltage regulation, and realize stable voltage output.

[0051] Please refer to Figure 3 The voltage processing module 200 further includes a fifth switch tube Q5, a sixth switch tube Q6, a seventh switch tube Q7, an eighth switch tube Q8, and a ninth switch tube Q9.

[0052] The first pole of the fifth switch tube Q5 is electrically connected with the enable end 220, the second pole of the fifth switch tube Q5 is grounded, the third pole of the fifth switch tube Q5 is electrically connected with the second pole of the sixth switch tube Q6, the first pole of the sixth switch tube Q6 is electrically connected with the battery voltage input end 210, the third pole of the sixth switch tube Q6 is electrically connected with the first pole of the eighth switch tube Q8, the first pole of the seventh switch tube Q7 is electrically connected with the third pole of the sixth switch tube Q6, the second pole of the seventh switch tube Q7 is electrically connected with the second pole of the eighth switch tube Q8 or the ninth switch tube Q9, the third pole of the seventh switch tube Q7 is grounded, the third pole of the eighth switch tube Q8 is electrically connected with the first pole of the ninth switch tube Q9, and the third pole of the ninth switch tube Q9 is electrically connected with the voltage output end 230.

[0053] For example, the fifth switch tube Q5, the sixth switch tube Q6, the seventh switch tube Q7, the eighth switch tube Q8 and the ninth switch tube Q9 can be semiconductor triodes or field effect transistors, for example, refer to Figure 3 The fifth switch tube Q5 can be an NPN triode, the first pole of the fifth switch tube Q5 can be a base, the base is electrically connected with the enable end 220, the second pole of the fifth switch tube Q5 is an emitter, the emitter is grounded, the third pole is a collector, and the collector is electrically connected with the second pole of the sixth switch tube Q6 through the unidirectional diode D1. The sixth switch tube Q6 can be an NMOS field effect tube, the first pole is a source, the second pole is a gate, and the third pole is a drain, the source is electrically connected with the battery voltage input end 210, and the drain is electrically connected with the first pole of the eighth switch tube Q8. One end of the resistor R1 is connected with the battery voltage input end 210, and the other end of the resistor R1 is connected with the gate of the sixth switch tube Q6.

[0054] For example, the seventh switch tube Q7 can be an NMOS field effect tube, the first pole is a gate, the second pole is a drain, and the third pole is a source, the gate is connected with the resistor R2 and the resistor R3, the other end of the resistor R3 is grounded, the other end of the resistor R2 is connected with the drain of the sixth switch tube Q6, the third pole is grounded, the second pole is connected with the resistor R5, the other end of the resistor R5 is connected with the resistor R4, and the other end of the resistor R4 is electrically connected with the first pole of the eighth switch tube Q8. The eighth switch tube Q8 can be a PMOS field effect tube, the first pole is a source, the second pole is a gate, and the third pole is a drain, the first pole is electrically connected with the third pole of the sixth switch tube Q6, and the drain is electrically connected with the first pole of the ninth switch tube Q9. The ninth switch tube Q9 can be a PMOS field effect tube, the first pole is a source, the second pole is a gate, and the third pole is a drain, the gate is electrically connected with the drain of the seventh switch tube Q7, and the drain is electrically connected with the voltage output end 220.

[0055] It can be understood that after receiving the enable signal of the switch module 100, the voltage processing module 200 enables the fifth switch tube Q5, the sixth switch tube Q6, the seventh switch tube Q7, the eighth switch tube Q8 and the ninth switch tube Q9 through the enable end 220, and the voltage of the battery voltage input end 210 is output to the voltage output end 230 through the sixth switch tube Q6, the eighth switch tube Q8 and the ninth switch tube Q9, and the voltage output end 230 outputs the battery voltage signal.

[0056] Please refer to Figure 4 The power management circuit further comprises a generator voltage module 400 and a diode D2, the output end of the generator voltage module 400 is electrically connected with the input end of the diode D2, and the output end of the diode D2 is electrically connected with the voltage output end 230.

[0057] For example, the generator voltage module 400 is used to provide the voltage of the generator power supply for the power management circuit, and provide support when the battery power supply is insufficient, and the diode D2 is used for isolation to avoid the reverse current of the voltage output end 230, and the generator voltage can enter the circuit through the diode D2 to supply power for the voltage output end 230.

[0058] It can be understood that the generator voltage module 400 can comprise a rectifier circuit composed of diodes or a three-phase full-bridge rectifier circuit, which is used to rectify the alternating voltage output by the generator into direct current voltage; can further comprise a filter circuit composed of capacitors and inductors and the like, which is used to filter the rectified direct current voltage to remove ripple components; can further comprise a voltage stabilizing circuit composed of voltage stabilizing diodes or switching voltage stabilizers and the like, which is used to stabilize the output voltage of the generator to ensure the constancy of the output voltage; and can further comprise an overvoltage, overcurrent, short circuit and the like protection circuit, which is used to protect the generator voltage module 400 from damage caused by abnormal voltage and current.

[0059] Please refer to Figure 5 The generator voltage module 400 comprises a rectifier unit 410 and a generator voltage reduction unit 420, the input end of the rectifier unit 410 is electrically connected with the generator, the output end of the rectifier unit 410 is electrically connected with the input end of the generator voltage reduction unit 420, and the output end of the generator voltage reduction unit 420 is electrically connected with the input end of the diode D2.

[0060] It can be understood that the rectifier unit 410 rectifies the alternating voltage output by the generator into direct current voltage, the input end of the rectifier unit 410 is electrically connected with the generator, and the output end of the rectifier unit 410 is electrically connected with the input end of the generator voltage reduction unit 420. The input end of the generator voltage reduction unit 420 can be a third pin end (VIN end), and the output end of the generator voltage reduction unit 420 can be an eighth pin end (SW end) which is electrically connected with the input end of the diode D2.

[0061] The output end of the rectifying unit 410 passes through a filtering circuit to remove high-frequency ripple components and improve the stability of the voltage. The generator voltage module 400 further includes a capacitor CE1, a positive electrode of the capacitor CE1 being electrically connected to the rectifying unit 410, and the other end being grounded; a capacitor C1, one end of the capacitor C1 being electrically connected to the rectifying unit 410, and the other end being grounded; a resistor R6, one end of the resistor R6 being connected to the rectifying unit 410, and the other end being connected to a resistor R7 and a second pin end (an EN end) of the generator step-down unit 420; and the resistor R7, the other end of the resistor R7 being grounded. A fourth pin end (an RT / SYNC end) of the generator step-down unit 420 is connected to a resistor R8, and the other end of the resistor R8 is grounded; and a first pin end (a GND end) of the generator step-down unit 420 is grounded.

[0062] The eighth pin end (an SW end) of the generator step-down unit 420 is connected to a first end of an inductor L2, a second end of the inductor L2 is connected to a resistor R9, the other end of the resistor R9 is connected to a resistor R10, and the other end of the resistor R10 is grounded. The seventh pin end (a BOOT end) of the generator step-down unit 420 is connected to a capacitor C2, the other end of the capacitor C2 is connected to the first end of the inductor L2; the fifth pin end (an FB end) of the generator step-down unit 420 is connected to the resistor R9 or the resistor R10; and the sixth pin end (a PG end) of the generator step-down unit 420 is left floating. One end of a resistor R11 is connected to the second end of the inductor L2, the other end of the resistor R11 is grounded; one end of an inductor C3 is connected to the second end of the inductor L2, the other end of the inductor C3 is grounded; one end of an inductor C4 is connected to the second end of the inductor L2, the other end of the inductor C4 is grounded; one end of a resistor R12 is connected to the second end of the inductor L2, the other end of the resistor R12 is connected to a resistor R13, the other end of the resistor R13 is grounded; a USB_D interface is connected to the resistor R12 or the resistor R13, one end of an inductor C5 is connected to the USB_D interface, and the other end of the inductor C5 is grounded. The generator step-down unit 420 realizes stable control of the generator output voltage through a feedback circuit (the resistor R9, the resistor R10, and the FB end).

[0063] Please refer to Figure 6 The power management circuit further includes a master control module 500, the master control module 500 including a master control step-down unit 510 and a first control unit 520, a first end of the master control step-down unit 510 being electrically connected to the voltage output end 230, a second end of the master control step-down unit 510 being grounded, and a third end of the master control step-down unit 510 being electrically connected to a first pin end of the first control unit 520.

[0064] It can be understood that the master control step-down unit 510 is used to step down the battery supply voltage output by the voltage output end 230 to a suitable voltage (for example, 3.3V) to supply a voltage for the first control unit 520. The first control unit 520 serves as a master controller of the entire power management circuit and is responsible for monitoring and managing the entire power supply system.

[0065] For example, refer to Figure 7 The first end of the master voltage reduction unit 510 is electrically connected to the voltage output end 230, one end of the capacitor C6 is connected to the voltage output end 230, the other end of the capacitor C6 is grounded, one end of the capacitor C7 is connected to the voltage output end 230, and the other end of the capacitor C7 is grounded. One end of the capacitor C8 is connected to the third end of the master voltage reduction unit 510, and the other end of the capacitor C8 is grounded. The battery voltage signal output by the voltage input end 230 is reduced to 3.3V by the master voltage reduction unit 510 and is electrically connected to the first pin end (VDD end) of the first control unit 520. The twentieth pin end (VSS end) of the first control unit 520 is grounded. One end of the capacitor C9 is connected to the third end of the master voltage reduction unit 510, and the other end is grounded.

[0066] For example, refer to Figure 8 The power management circuit further includes a charging module 600, and the charging module 600 includes a charging switch unit 610 and a second control unit 620. The input end of the charging switch unit 610 is electrically connected to the second pin end of the first control unit 520, the first output end of the charging switch unit 610 is electrically connected to the first pin end of the second control unit 620, the second output end of the charging switch unit 610 is electrically connected to the second pin end of the second control unit 620, the third pin end of the second control unit 620 is electrically connected to the output end of the generator voltage module 400, the fourth pin end of the second control unit 620 is electrically connected to the battery voltage input end 210, the fourth pin end of the second control unit 620 is electrically connected to the first end of the first resistor R14, the second end of the first resistor R14 is electrically connected to the first end of the second resistor R15, the second end of the second resistor R15 is grounded, and the third pin end of the first control unit 520 is electrically connected to the first end of the second resistor R15.

[0067] For example, the charging module 600 includes a charging switch unit 610 and a second control unit 620. The input end of the charging switch unit 610 is electrically connected to the second pin end (PA4 / AN3 end) of the first control unit 520, the first output end of the charging switch unit 610 is electrically connected to the first pin end (CS end) of the second control unit 620, and the second output end of the charging switch unit 610 is electrically connected to the second pin end (VERG end) of the second control unit 620. The third pin end of the second control unit 620 is electrically connected to the output end of the generator voltage module 400, and the output end of the generator voltage module 400 provides power for the charging module 600.

[0068] It can be understood that the fourth pin end (BAT end) of the second control unit 620 is electrically connected with the battery voltage input end 210, for outputting a charging voltage for charging the battery. Meanwhile, the fourth pin end (BAT end) of the second control unit 620 is electrically connected with the first end of the first resistor R14, the second end of the first resistor R14 is electrically connected with the first end of the second resistor R15, the second end of the second resistor R15 is grounded, and the third pin end (PA5 / AN4) of the first control unit 520 is electrically connected with the first end of the second resistor R15. The first resistor R14 and the second resistor R15 divide the voltage of the battery voltage input end according to the resistance value, and feed back the signal to the third pin end (PA5 / AN4) of the first control unit 520. The first control unit 520 identifies whether the battery is a single-battery or a double-battery, controls the second pin end (PA4 / AN3 end) of the first control unit 520 to output a signal to the input end of the charging switch unit 610, controls the conduction and cutoff of the charging switch unit, and thus controls the size of the charging voltage outputted by the fourth pin end (BAT end) of the second control unit 620, so as to match the capacity of the battery for charging management.

[0069] For example, the fourth pin end (PB5 end), the fifth pin end (PB0 / AN0 end), the sixth pin end (PB1 / AN1 end), the seventh pin end (PA6 / AN5 end), the eighth pin end (PA7 / AN6 end), the ninth pin end (PB3 / AN7 end), the tenth pin end (PB4 / AN8), the eleventh pin end (PB6 / SCK), the twelfth pin end (PA3 / SDA), the thirteenth pin end (PA1 / INT0), the fourteenth pin end (PC2), the fifteenth pin end (PC1 / RX / TX), and the sixteenth pin end (PC0 / TX) of the first control unit 520 are left unconnected. The seventeenth pin end (PA2 / INT1 end) is connected with the CLK interface, the eighteenth pin end (PAC end) is connected with the DAT interface, and the nineteenth pin end (PB2 / AN2) is connected with the USB_D interface.

[0070] It can be understood that the third pin end, the fifth pin end, the sixth pin end and the seventh pin end of the second control unit 620 are electrically connected with the generator voltage module 400. The capacitor C10 is connected with the generator voltage module 400 and grounded at the other end. The capacitor C11 is connected with the generator voltage module 400 and grounded at the other end. One end of the photosensitive diode D3 is connected with the generator voltage module 400, the other end is connected with the resistor R17, and the other end of the resistor R17 is connected with the tenth pin end (CHRG end) of the second control unit 620; one end of the photosensitive diode D4 is connected with the generator voltage module 400, the other end is connected with the resistor R16, and the other end of the resistor R16 is connected with the ninth pin end (STDBY end) of the second control unit 620, and the eighth pin end (PWR_ON- end) of the second control unit 620 is suspended. The eleventh pin end (RTRICK end) of the second control unit 620 is connected with the resistor R18, and the other end of the resistor R18 is grounded. The twelfth pin end (GND end), the thirteenth pin end (EP end) and the seventeenth pin end (TS end) of the second control unit 620 are grounded. The fifteenth pin end of the second control unit 620 is connected with the sixteenth pin end, the negative electrode of the diode D5 is connected with the sixteenth pin end, and the positive electrode of the diode D5 is grounded. The fifteenth pin end of the second control unit 620 is connected with the first end of the inductor L3, the second end of the inductor L3 is connected with one end of the resistor R19, and the other end of the resistor R19 is connected with the battery voltage input end 210. The fifteenth pin end of the second control unit 620 is connected with the first end of the inductor L3, the second end of the inductor L3 is connected with the capacitor C12 and the capacitor C13, and the other end is grounded. The capacitor C14 and the capacitor C15 are connected with the battery voltage input end 210 and grounded at the other end. The capacitor C16 is connected with the resistor R15 and grounded at the other end.

[0071] Please refer to Figure 9 The charging switch unit 610 includes the tenth switch tube Q10 and the eleventh switch tube Q11, the first pole of the tenth switch tube Q10 is electrically connected with the second pin end of the first control unit 520, the second pole of the tenth switch tube Q10 is grounded, the third pole of the tenth switch tube Q10 is electrically connected with the first pole of the eleventh switch tube Q11, the second pole of the eleventh switch tube Q11 is electrically connected with the first pin end of the second control unit 620, and the third pole of the eleventh switch tube Q11 is electrically connected with the second pin end of the second control unit 620.

[0072] The tenth switch Q10 and the eleventh switch Q11 can be triodes or field effect transistors. The tenth switch Q10 can be an NPN triode, and the eleventh switch Q11 can be a PNP triode. The first pole of the tenth switch Q10 can be a base, electrically connected to the second pin end (PA4 / AN3 end) of the first control unit 520, the second pole can be an emitter, grounded, and the third pole can be a collector, electrically connected to the first pole of the eleventh switch Q11. The first pole of the eleventh switch Q11 is a base, the second pole is a collector, electrically connected to the first pin end of the second control unit 620, and the third pole is electrically connected to the first pin end of the second control unit 620.

[0073] It can be understood that one end of the resistor R20 is connected to the second pin end of the first control unit 520, and the other end is connected to the first pole of the tenth switch Q10; one end of the resistor R21 is connected to the first pole of the tenth switch Q10, and the other end is grounded. One end of the resistor R22 is connected to the first pin end of the second control unit 620, and the other end is connected to the second pole of the eleventh switch Q11; one end of the resistor R23 is connected to the collector of the tenth switch Q10, and the other end is connected to the emitter of the eleventh switch Q11. One end of the capacitor C17 is connected to the emitter of the eleventh switch Q11, and the other end is grounded.

[0074] It can be understood that when the second pin end (PA4 / AN3 end) of the first control unit 520 inputs a high level, the tenth switch Q10 and the eleventh switch Q11 are turned on, the first pin end of the second control unit 620 is connected to the second pin end of the second control unit 620, and the second control unit 620 is controlled to be in double-battery charging mode; if the tenth switch Q10 is turned off, the first pin end of the second control unit 620 is suspended, and the second control unit 620 is controlled to be in single-battery charging mode.

[0075] Please refer to Figure 10 , the voltage processing module 200 further comprises a twelfth switch Q12 and a thirteenth switch Q13, wherein the first pole of the twelfth switch Q12 is electrically connected to the output end of the generator voltage reduction unit 420, the second pole of the twelfth switch Q12 is grounded, the third pole of the twelfth switch Q12 is electrically connected to the battery voltage input end 210, the first pole of the thirteenth switch Q13 is electrically connected to the output end of the generator voltage reduction unit 420, the second pole of the thirteenth switch Q13 is grounded, and the third pole of the thirteenth switch Q13 is electrically connected to the battery voltage input end 210.

[0076] It can be understood that the twelfth switch tube Q12 and the thirteenth switch tube Q13 can be a triode or a field effect transistor. The twelfth switch tube Q12 can be an NPN type triode, the first pole is a base, electrically connected with the output end of the generator voltage reduction unit 420; the second pole is an emitter grounded, and the third pole is a collector, electrically connected with the battery voltage input end 210. The thirteenth switch tube Q13 can be an NMOS transistor, the first pole is a gate, the second pole is a source, and the third pole is a drain, the first pole is electrically connected with the output end of the generator voltage reduction unit 420, the second pole is grounded, and the third pole is electrically connected with the battery voltage input end 210.

[0077] For example, the anode of the diode D6 is connected with the gate of the sixth switch tube Q6, and the cathode of the diode D6 is connected with the collector of the twelfth switch tube Q12. One end of the resistor R24 is connected with the generator voltage reduction unit 420, and the other end is connected with the base of the twelfth switch tube Q12. One end of the resistor R25 is connected with the base of the twelfth switch tube Q12, and the other end is grounded. One end of the resistor R26 is connected with the generator voltage reduction unit 420, and the other end is connected with the gate of the thirteenth switch tube Q13. One end of the resistor R27 is connected with the gate of the thirteenth switch tube Q13, and the other end is grounded.

[0078] It can be understood that when the battery power supply is insufficient or the enable end does not send an enable signal, the generator can be started to supply power to the power management circuit through the output end of the generator voltage reduction unit, so that the sixth switch tube Q6, the twelfth switch tube Q12 and the thirteenth switch tube Q13 are turned on, the seventh switch tube, the eighth switch tube and the ninth switch tube are turned off, and the battery voltage input end 210 is charged.

[0079] Please refer to Figure 11 , Figure 11 is a circuit flow chart provided by the embodiment of the application. The voltage input by the generator is converted into a direct current voltage through a rectification module, and then output as a stable generator voltage through a voltage reduction module. The battery charging module supplies voltage to a single or double battery, and transmits the signal identified by the battery to the main control MCU. The main control MCU controls the output voltage of the charging mode to be compatible with the mode of a single or double battery. The voltage output by the voltage reduction module is supplied to a voltage switching module, and then output to an LDO voltage stabilizing module to supply power to the main control MCU, and at the same time output to a boost-buck module to output a fixed voltage, for example, a voltage of 6V. When the battery power is sufficient, the voltage switching mode is converted into a battery power supply mode, and the battery voltage signal is output to the boost-buck module to output a voltage signal of 6V.

[0080] The face basin faucet provided by the embodiment of the present application comprises the power management circuit described above, and can be applied to intelligent shower devices, intelligent faucet devices and the like. The specific implementation of the face basin faucet is basically the same as that of the specific embodiment of the power management circuit described above, and will not be repeated here. The face basin faucet can also be provided with other functional modules under the premise of meeting the requirements of the embodiment of the present application.

[0081] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A power management circuit, characterized by, The application relates to a voltage processing module and a voltage processing method. The application relates to a voltage processing module and a voltage processing method. The application relates to a voltage processing module and a voltage processing method. The application relates to a voltage processing module and a voltage processing method.

2. The power management circuit of claim 1, wherein, The application relates to a voltage processing module and a voltage processing method.

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The power management circuit of claim 1, wherein, The power management circuit further comprises a generator voltage module and a diode, an output terminal of the generator voltage module is electrically connected with an input terminal of the diode, and an output terminal of the diode is electrically connected with the voltage output terminal; When the power supply of the battery is insufficient, the generator voltage module is used to provide the power management circuit with a voltage supplied by the generator.

5. The power management circuit of claim 4, wherein, The generator voltage module comprises a rectification unit and a generator voltage reduction unit, an input terminal of the rectification unit is electrically connected with the generator, an output terminal of the rectification unit is electrically connected with an input terminal of the generator voltage reduction unit, and an output terminal of the generator voltage reduction unit is electrically connected with the input terminal of the diode.

6. The power management circuit of claim 4, wherein, The power management circuit further comprises a master control module, the master control module comprises a master control voltage reduction unit and a first control unit, a first terminal of the master control voltage reduction unit is electrically connected with the voltage output terminal, a second terminal of the master control voltage reduction unit is grounded, and a third terminal of the master control voltage reduction unit is electrically connected with a first pin terminal of the first control unit.

7. The power management circuit of claim 6, wherein, The power management circuit further comprises a charging module, the charging module comprises a charging switch unit and a second control unit, an input terminal of the charging switch unit is electrically connected with a second pin terminal of the first control unit, a first output terminal of the charging switch unit is electrically connected with a first pin terminal of the second control unit, a second output terminal of the charging switch unit is electrically connected with a second pin terminal of the second control unit, a third pin terminal of the second control unit is electrically connected with an output terminal of the generator voltage module, a fourth pin terminal of the second control unit is electrically connected with the battery voltage input terminal, the fourth pin terminal of the second control unit is electrically connected with a first terminal of a first resistor, a second terminal of the first resistor is electrically connected with a first terminal of a second resistor, a second terminal of the second resistor is grounded, and a third pin terminal of the first control unit is electrically connected with the first terminal of the second resistor.

8. The power management circuit of claim 7, wherein, The charging switch unit comprises a tenth switch tube and an eleventh switch tube, a first pole of the tenth switch tube is electrically connected with the second pin terminal of the first control unit, a second pole of the tenth switch tube is grounded, a third pole of the tenth switch tube is electrically connected with a first pole of the eleventh switch tube, a second pole of the eleventh switch tube is electrically connected with the first pin terminal of the second control unit, and a third pole of the eleventh switch tube is electrically connected with the second pin terminal of the second control unit.

9. The power management circuit of claim 5, wherein, The voltage processing module further comprises a twelfth switch tube and a thirteenth switch tube, wherein a first pole of the twelfth switch tube is electrically connected with an output terminal of the generator voltage reduction unit, a second pole of the twelfth switch tube is grounded, a third pole of the twelfth switch tube is electrically connected with the battery voltage input terminal, a first pole of the thirteenth switch tube is electrically connected with the output terminal of the generator voltage reduction unit, a second pole of the thirteenth switch tube is grounded, and a third pole of the thirteenth switch tube is electrically connected with the battery voltage input terminal.

10. A lavatory faucet comprising: The basin faucet comprises the power management circuit according to any one of claims 1 to 9, the basin faucet comprises a load device, and the power management circuit is used to provide the load device with reliable power supply.

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