Miniature direct-current hydroelectric generator with voltage protection and rectification device

Abstract

The utility model discloses a miniature direct-current hydroelectric generator with a voltage protection and rectification device, which relates to the technical field of miniature generators and comprises a generator, a protection rectification PCBA (printed circuit board assembly) mounted on the generator and a primary shell, a protection rectification circuit is arranged on the protection rectification PCBA, the miniature direct-current hydroelectric generator further comprises a secondary shell, and the secondary shell is arranged on the primary shell. The secondary shell is fixedly installed at one end of the primary shell, the generator is fixedly arranged in the primary shell, a driving shaft of the generator extends into the secondary shell, and fan blades are fixedly arranged on the driving shaft in the secondary shell. The direct-current voltage output by converting, voltage limiting, rectifying and voltage stabilizing alternating current generated by hydroelectric generation is stable, surge voltage is filtered out, the service life of rear-end accessories of the generator is greatly prolonged, the adaptation range of the rear-end accessories of the generator is expanded, standard direct-current power supply accessories can be directly supported, independent customization is not needed, and the cost is reduced. And the applicability of the rear-end device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro generator technical field, concretely relates to a micro DC hydroelectric generator with voltage protection and rectifier device. BACKGROUND

[0002] At present, the market provides micro hydroelectric generators driven by household water for shower gondolas, which can generate electricity through the flow of household water by connecting the micro hydroelectric generator on the pipeline or faucet of household water. The existing micro hydroelectric generator outputs alternating current, which cannot directly drive the conventional standard direct current power supply circuit board. Special AC power supply circuit boards need to be customized, which will increase the cost and production difficulty. When the existing micro hydroelectric generator is used in different water pressure environments, the output voltage will be transient due to the direct output of the coil voltage, which will cause unstable output voltage. Even in extreme cases, it will cause extremely high transient voltage, which will break through the back-end circuit board. SUMMARY

[0003] The utility model aims to solve the technical problem of providing a micro DC hydroelectric generator with voltage protection and rectifier device, which solves the problem that the existing micro generator cannot directly drive the conventional standard direct current power supply circuit board and causes extremely high transient voltage in extreme cases, which will break through the back-end circuit board.

[0004] TECHNICAL SCHEME

[0005] To solve the above problems, the technical scheme provided by the utility model is:

[0006] A micro DC hydroelectric generator with voltage protection and rectifier device, comprising a generator and a protection and rectification PCBA board installed on the generator, the protection and rectification PCBA board is provided with a protection and rectification circuit, further comprising a primary shell, the primary shell is provided with a secondary shell, the secondary shell is fixedly installed at one end of the primary shell, the generator is fixedly arranged in the primary shell, the drive shaft of the generator extends into the secondary shell, the drive shaft in the secondary shell is fixedly provided with a fan blade, the secondary shell is provided with a filter screen and a secondary shell sealing ring in sequence on the side away from the primary shell, the primary shell is provided with a primary shell sealing ring on the side close to the secondary shell of the generator, the protection and rectification PCBA board is installed at the end of the generator away from the secondary shell, the primary shell is provided with an inner liner, and the generator is installed in the inner liner.

[0007] Further, the micro DC hydroelectric generator comprises a protection and rectification PCBA board, and the generator and the protection and rectification PCBA board connected with the generator are buckled and glued.

[0008] Further, the inner liner of the primary shell is filled with glue for sealing the generator and the protection rectification PCBA board.

[0009] Further, the protection rectification circuit comprises a rectification bridge stack, a bidirectional transient voltage suppression diode connected to the rectification bridge stack, a low dropout linear regulator connected to the bidirectional transient voltage suppression diode, a first capacitor and a second capacitor connected to the low dropout linear regulator respectively, an output ground and an output positive pole, and a LIGHT port.

[0010] Further, the rectification bridge stack comprises four rectification diodes, i.e., a first rectification diode, a second rectification diode, a third rectification diode, and a fourth rectification diode.

[0011] Further, the low dropout linear regulator comprises a voltage stabilization input, a voltage stabilization output, and a voltage stabilization ground, and the first capacitor and the second capacitor are filter capacitors.

[0012] Further, the negative pole of the first rectification diode and the positive pole of the second rectification diode are connected to one end of an alternating current port, the positive pole of the third rectification diode and the negative pole of the fourth rectification diode are connected to the other end of the alternating current port, the positive pole of the first rectification diode is connected to the output ground, the negative pole of the second rectification diode is connected to the voltage stabilization input, the negative pole of the third rectification diode is connected to the voltage stabilization input, and the positive pole of the fourth rectification diode is connected to the output ground.

[0013] Further, the bidirectional transient voltage suppression diode is connected to the voltage stabilization input and the output ground respectively, the first capacitor is connected to the voltage stabilization input and the output ground respectively, one end of the second capacitor is connected to the voltage stabilization output and the output positive pole, and the other end of the second capacitor is connected to the output ground.

[0014] Further, one end of the voltage stabilization input is connected to the LIGHT port, and a current-limiting resistor is arranged between the LIGHT port and the voltage stabilization input.

[0015] Further, the output ground is a zero-point reference point and an output negative pole, and the output positive pole and the output ground are at least one.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical scheme has the following beneficial effects:

[0018] The utility model discloses a voltage is stable and the surge voltage is filtered out to the voltage output of the alternating current of the water power generation through conversion, voltage limiting, rectification and stabilized voltage, greatly improves the service life of the generator rear end accessory, expands the adaptation range of the generator rear end accessory, can directly support the standard DC power supply accessory, need not customizing alone, increases the applicability of rear end device, the whole device is sealed in the motor with the mode of filling glue, can reduce the erosion of the moisture vapor of damp environment to the circuit, removes the DC voltage stabilizing and filtering module that increases in the middle when the traditional generator directly drives the standard DC power supply accessory, greatly reduces the complexity of installation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure explosion map of the utility model embodiment 1;

[0020] Figure 2 It is the structure section view of the utility model embodiment 1;

[0021] Figure 3 It is the circuit structure schematic diagram of the utility model embodiment 1;

[0022] Figure 4 It is the filter screen schematic diagram of the utility model embodiment 1;

[0023] Figure 5 It is the protection rectification PCBA board schematic diagram of the utility model embodiment 1. DETAILED DESCRIPTION

[0024] To make the utility model technical scheme more clearly, the utility model is further detailed below in combination with the drawings and specific embodiment.

[0025] Embodiment 1

[0026] In combination with the drawings Figures 1-5 A miniature DC water turbine generator with voltage protection and rectification device has the function that the current directly generated is converted into DC power for subsequent electrical devices, and the miniature DC water turbine generator includes a primary shell 14 and a secondary shell 12, the secondary shell 12 is fixed on the primary shell 14, the secondary shell 12 is fixedly installed at one end of the primary shell 14, the primary shell 14 and the secondary shell 12 are communicated, the primary shell 14 is provided with a generator 16 fixedly arranged therein, the generator 16 in the primary shell 14 is provided with a protection rectification PCBA board 17 at the end thereof, and the alternating current generated by the generator 16 is transmitted to the protection rectification PCBA board 17.

[0027] The protection rectification PCBA board 17 is provided with a protection rectification circuit, which can convert the alternating current generated by the miniature generator into DC power, and output the DC power in a stable voltage form by removing harmful surges for use by subsequent DC power accessories.

[0028] The protection rectifier circuit is configured to convert AC power into DC power, and rectify, filter and limit the voltage of the converted DC power, so that subsequent DC power accessories can be used stably.

[0029] The protection rectifier circuit includes a rectifier bridge stack for converting AC power into DC power, the rectifier bridge stack is connected to an AC power supply port, and the rectifier bridge stack is connected to a bidirectional transient voltage suppression diode D5, which removes the transient voltage and surge voltage from the AC power supply after conversion into DC power, has the functions of anti-static and surge current, and can protect the subsequent circuit. The output of the bidirectional transient voltage suppression diode D5 is divided into two lines, one output line is directly output from the LIGHT port after passing through a current limiting resistor R1, and is used to drive the subsequent circuit. The current-limited power supply can directly drive some loads that do not require high voltage stability.

[0030] The other output line is further filtered and stabilized before output, and is used to connect various standard DC power accessories that require voltage stability. The filtering is composed of two filter capacitors, and the voltage stabilization is performed by a low-dropout linear voltage regulator U1. The two filter capacitors are a first capacitor C1 and a second capacitor C2. The current flows through the bidirectional transient voltage suppression diode D5, then through the first capacitor C1, then through the low-dropout linear voltage regulator U1, then through the second capacitor C2, and then outputs to the subsequent appliance.

[0031] The rectifier bridge stack is composed of four rectifier diodes A7, which are a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D2, and a fourth rectifier diode D4.

[0032] The low-dropout linear voltage regulator includes a voltage stabilization input, a voltage stabilization output, and a voltage stabilization ground. The first capacitor and the second capacitor are filter capacitors. The first capacitor C1 is connected to the voltage stabilization input, and the second capacitor C2 is connected to the voltage stabilization output.

[0033] The low-dropout linear voltage regulator U1 has three structures, namely a voltage stabilization input U1-IN, a voltage stabilization output U1-OUT, and a voltage stabilization ground U1-GND for connecting to the output ground GND. The package form of the low-dropout linear voltage regulator U1 is preferably SOT89.

[0034] The negative pole of the first rectifier diode D1 and the positive pole of the second rectifier diode D2 are respectively connected to one end of the AC port AC-B, the positive pole of the third rectifier diode D3 and the negative pole of the fourth rectifier diode D4 are respectively connected to the other end of the AC port AC-A, the positive pole of the first rectifier diode D1 is connected to the output ground GND, the negative pole of the second rectifier diode D2 is connected to the voltage stabilizing input U1-IN, the negative pole of the third rectifier diode D3 is connected to the voltage stabilizing input U1-IN, and the positive pole of the fourth rectifier diode D4 is connected to the output ground GND.

[0035] The bidirectional transient voltage suppression diode D5 is connected between the voltage stabilizing input VCC and the output negative pole GND, the first capacitor C1 is connected between the voltage stabilizing input U1-IN and the output ground GND, and one end of the second capacitor C2 is connected to the voltage stabilizing output U1-OUT and the output positive pole VCC, and the other end of the second capacitor C2 is connected to the output ground GND.

[0036] The filtered voltage through the first capacitor C1 enters the low-dropout linear voltage regulator U1, the low-dropout linear voltage regulator U1 outputs the stabilized voltage to the second capacitor C2 for further filtering and energy storage, and finally outputs to the output positive pole VCC and the output ground GND. The output positive pole VCC and the output ground GND here are power supplies with stable voltage and harmful surges filtered out.

[0037] The output ground GND not only serves as a ground line, but also as a zero-point reference point and an output negative pole, and the output direction ports of the output positive pole VCC and the output ground GND can also be connected to multiple output positive poles VCC and output grounds GND.

[0038] The voltage stabilizing input VCC is connected to the LIGHT port, and a current-limiting resistor R1 is arranged between the LIGHT port and the voltage stabilizing input. The current-limiting resistor R1 is preferably 47R / 5%.

[0039] The protection rectification PCBA board 17 can also have an output interface 171 for connecting to a circuit in the rear stage that needs to use direct current. The voltage protection and the AC-DC conversion circuit of the protection rectification PCBA board 17 output a stable voltage direct current and a non-stable but current-limited direct current, and the two outputs share a common output structure.

[0040] The inner liner 18 is arranged in the primary shell 14, the generator 16 is arranged in the inner liner 18, and after the inner liner 18, the generator 16 and the protection rectification PCBA board 17 in the primary shell 14 are installed, the inner liner 18 in the primary shell 14 is filled with glue to seal the generator 16 and the protection rectification PCBA board 17, which is used to stabilize the motor and reduce the erosion of water vapor in a humid environment to the circuit. The glue sealing is only used to prevent the generator 16 from moving and will not block the water flow.

[0041] The protection rectifier PCBA board 17 is preferably fixed on the generator 16 by buckling and pouring glue.

[0042] The driving shaft of the generator 16 extends into the secondary shell 12, and the wind blade 13 is fixed on the driving shaft in the secondary shell 12. After the micro direct-current water power generator is installed on the water pipe joint, the water flow passes through the micro direct-current water power generator to drive the wind blade 13 to rotate, the rotation of the wind blade 13 drives the driving shaft of the generator 16 to rotate, thereby making the generator 16 generate electricity.

[0043] The secondary shell 12 is provided with a filter screen 11 and a secondary shell sealing ring 10 in sequence away from the primary shell 14, and the primary shell 14 is provided with a primary shell sealing ring 15 on the side close to the secondary shell 12. The secondary shell sealing ring 10 and the primary shell sealing ring 15 are used to prevent the water flow from overflowing after the micro direct-current water power generator is installed on the water pipe, which is inconvenient to use. The filter screen 11 prevents impurities in the water pipe from entering the secondary shell 12 and interfering with the wind blade 13, blocking the power generation, or damaging the wind blade 13.

[0044] The output interface 171 can be connected to a direct-current lamp panel, a direct-current temperature display, a direct-current time display, etc.

[0045] The protection rectifier PCBA board 17 has welding points for input and output leads, which are used for welding the input and output leads.

[0046] The high-voltage-resistant (>20V) voltage stabilizing circuit used in the alternating current-direct current conversion circuit with voltage protection and rectifying device enables the circuit board of the alternating current-direct current conversion circuit with voltage protection and rectifying device to withstand high voltage transient caused by sudden change of water pressure. The alternating current-direct current conversion circuit with voltage protection and rectifying device has energy storage and filter capacitors inside, which can buffer voltage fluctuation caused by sudden change of water pressure or load current change.

[0047] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A miniature DC hydroelectric generator with voltage protection and rectification device, characterized in that, The device includes a generator and a protective rectifier PCBA board mounted on the generator. The protective rectifier PCBA board is equipped with a protective rectifier circuit. It also includes a primary housing, on which a secondary housing is mounted. The secondary housing is fixedly mounted at one end of the primary housing. The generator is fixedly mounted inside the primary housing. The drive shaft of the generator extends into the interior of the secondary housing. A fan blade is fixedly mounted on the drive shaft inside the secondary housing. A filter screen and a secondary housing sealing ring are sequentially arranged on the side of the secondary housing away from the primary housing. A primary housing sealing ring is located on the side of the primary housing near the generator and close to the secondary housing. The protective rectifier PCBA board is mounted on the end of the generator away from the secondary housing. An inner liner is provided inside the primary housing, and the generator is mounted inside the inner liner.

2. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 1, characterized in that, The miniature DC hydroelectric generator includes a protective rectifier PCBA board, and the generator and the protective rectifier PCBA board connected to the generator are fixed by clips and potting.

3. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 1, characterized in that, The inner lining of the primary housing is potted and sealed with adhesive for the generator and the protective rectifier PCBA board.

4. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 1, characterized in that, The system includes a protection rectifier circuit, which includes a rectifier bridge rectifier connected to a bidirectional transient voltage suppressor diode. The bidirectional transient voltage suppressor diode is connected to a low dropout linear regulator. A first capacitor and a second capacitor are connected to the two sides of the low dropout linear regulator, respectively. The system also includes an output ground, an output positive terminal, and a LIGHT port.

5. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 4, characterized in that, The rectifier bridge consists of four rectifier diodes: the first rectifier diode, the second rectifier diode, the third rectifier diode, and the fourth rectifier diode.

6. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 5, characterized in that, The low-dropout linear regulator includes a regulated input, a regulated output, and a regulated ground; the first capacitor and the second capacitor are filter capacitors.

7. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 6, characterized in that, The cathode of the first rectifier diode and the anode of the second rectifier diode are respectively connected to one end of the AC power port, the anode of the third rectifier diode and the cathode of the fourth rectifier diode are respectively connected to the other end of the AC power port, the anode of the first rectifier diode is connected to the output ground, the cathode of the second rectifier diode is connected to the regulated input, the cathode of the third rectifier diode is connected to the regulated input, and the anode of the fourth rectifier diode is connected to the output ground.

8. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 7, characterized in that, The two ends of the bidirectional transient voltage suppressor diode are respectively connected to the regulated input and the output ground. The two ends of the first capacitor are respectively connected to the regulated input and the output ground. One end of the second capacitor is connected to the regulated output and the output positive terminal, and the other end of the second capacitor is connected to the output ground.

9. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 8, characterized in that, One end of the regulated input is connected to the LIGHT port, and a current-limiting resistor is provided between the LIGHT port and the regulated input.

10. A miniature DC hydroelectric generator with voltage protection and rectification device according to claim 9, characterized in that, The output ground is the zero-point reference point and the output negative terminal, and the output positive terminal and the output ground are at least one.

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