CN214429306U - Circuit structure capable of adjusting charging voltage in large range - Google Patents

Circuit structure capable of adjusting charging voltage in large range Download PDF

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Publication number
CN214429306U
CN214429306U CN202023304377.6U CN202023304377U CN214429306U CN 214429306 U CN214429306 U CN 214429306U CN 202023304377 U CN202023304377 U CN 202023304377U CN 214429306 U CN214429306 U CN 214429306U
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module
output
voltage
high frequency
control unit
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方洁
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Foshan Huanteng Technology Co Ltd
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Foshan Huanteng Technology Co Ltd
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Abstract

The utility model discloses a can adjust charging voltage's circuit structure on a large scale, including conversion module and through the control module that same multichannel output high frequency transformer is connected respectively with conversion module, output module, feedback module and voltage stabilizing module, control module, feedback module and voltage stabilizing module all adopt the output of the forward secondary winding undercurrent, output module adopts the heavy current output of flyback secondary winding, feedback module is equipped with the high frequency pulse control unit, the secondary winding output of feedback module is connected to the output that the high frequency pulse control unit passes through the optical coupler, high frequency pulse control unit electric connection conversion module, output module is equipped with the voltage adjustment unit, the feedback module is connected to the input that the voltage adjustment unit passes through the optical coupler, control module passes through the output that the display control unit connects the voltage stabilizing module. The utility model discloses can adjust output voltage by a wide margin, and do not influence other circuits and realize the integration power supply, can realize the multi-functional common power supply of machine that charges.

Description

Circuit structure capable of adjusting charging voltage in large range
Technical Field
The utility model relates to a charging circuit's technical field specifically says a can adjust charging voltage's circuit structure on a large scale.
Background
With the advancement of technology, more and more electronic devices enter people's lives, and various chargers come with, each charger having its own charging voltage range, and although some chargers are more capable of adapting to a small range of voltage, they are not capable of adapting to a large range of voltage regulation and can only charge a given type of electronic device.
Meanwhile, most of the existing charging circuits lack other circuit functions, for example, the charging circuits cannot display use information such as charging voltage or current, the charging circuits are easily used in a mess and damage the performance of the battery, even most of the charging devices capable of displaying the current and voltage information are realized by external or independent power supply, and integrated power supply cannot be realized, so that the problems of inconvenient use and the like are caused.
SUMMERY OF THE UTILITY MODEL
Technical defect to existence in the background art, the utility model provides a can adjust charging voltage's circuit structure on a large scale has solved above-mentioned technical problem and has satisfied the actual demand, and concrete technical scheme is as follows:
a circuit structure capable of adjusting charging voltage in a large range comprises a conversion module, and a control module, an output module, a feedback module and a voltage stabilizing module which are respectively connected with the conversion module through the same multi-output high-frequency transformer, the control module, the feedback module and the voltage stabilizing module all adopt forward secondary winding small current output, the output module adopts the large current output of a flyback secondary winding, the feedback module is provided with a high-frequency pulse control unit, the high-frequency pulse control unit is connected with the output end of the secondary winding of the feedback module through the output end of the optical coupler, the high-frequency pulse control unit is electrically connected with the conversion module, the output module is provided with a voltage adjusting unit, the voltage adjusting unit is connected with the feedback module through the input end of the optical coupler, and the control module is connected with the output end of the voltage stabilizing module through the display control unit.
Furthermore, the conversion module comprises a high-frequency filter, a rectifier bridge and a high-frequency spike absorption circuit, the high-frequency filter and the rectifier bridge are connected in parallel to the conversion module, the high-frequency spike absorption circuit and the high-frequency pulse control unit are connected in series to the conversion module, and an input port of the conversion module is connected with an NTC thermistor.
Further, an MOS tube is arranged at the output end of the output module and connected with a positive circuit of the output module in series, a grid electrode of the MOS tube is connected with a collector electrode of a triode of the control module, a positive electrode of the output end of the output module is also connected with a PTC thermistor in series, and the voltage adjusting unit of the output module is connected with the input end of the optical coupler.
Furthermore, a display control unit is arranged on the base electrode of the triode of the control module, a constant current unit is arranged on the display control unit, and the constant current unit is respectively connected with the output end of the output module and the voltage adjusting unit.
Further, the output end of the secondary winding of the forward transformer of the voltage stabilizing module is connected in series with a 7805 voltage stabilizing chip, and the +5V output end of the 7805 voltage stabilizing chip is connected with the +5V input end of the display control unit.
Further, the voltage adjusting unit is electrically connected with the optical coupler through a Schottky diode, and the voltage adjusting unit is provided with an adjustable resistor.
The utility model has the advantages of that: the utility model relates to a can adjust charging voltage's circuit structure main output on a large scale adopts flyback transformer can realize adjusting main voltage by a wide margin, through rectification filtering control circuit, can prevent that the battery state is not good, carries out short circuit, superhigh pressure transposition protection. The control circuit adopts a forward transformer to stably control the voltage and is not influenced by the main output voltage. Meanwhile, a loop controlled by the main output circuit is adjusted and fed back to the high-frequency chip through a potentiometer, and circuit feedback is achieved. And a positive feedback transformer outputs a stable +5V voltage to supply power to the control chip. The charging structure has the advantages that the charging compatibility is greatly improved, the output voltage can be greatly adjusted, meanwhile, the integrated self-power supply of the charging structure is realized, and other functions are realized without an independent or external power supply. This use is novel can also can show the voltage and current information of circuit structure, uses multiple special component to carry out the circuit protection in having the circuit again, and the safety problem in the charging process can be guaranteed to the circuit.
Drawings
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is a schematic diagram of the circuit structure of the present invention.
Wherein: the circuit comprises a conversion module 1, a high-frequency filter 101, a rectifier bridge 102, a high-frequency spike absorption circuit 103, an NTC thermistor 104, a control module 2, a triode 201, a display control unit 202, a constant current unit 203, an output module 3, a voltage adjusting unit 301, an MOS (metal oxide semiconductor) tube 302, a PTC thermistor 303, a Schottky diode 304, an adjustable resistor 305, a feedback module 4, a high-frequency pulse control unit 401, an optical coupler 402, and a voltage stabilizing module 5, a 7805 voltage stabilizing chip 501.
Detailed Description
Embodiments of the present invention will be described with reference to the accompanying drawings and related embodiments, wherein the following embodiments are only preferred embodiments for better illustrating the present invention, and the embodiments of the present invention are not limited to the following embodiments, and the related essential components of the present invention related to the technical field should be considered as known in the art and can be known and mastered by those skilled in the technical field.
Referring to fig. 1 and 2, a circuit structure capable of adjusting charging voltage in a large range includes a conversion module 1, and a control module 2, an output module 3, a feedback module 4 and a voltage stabilizing module 5 respectively connected to the conversion module 1 through a same multi-output high frequency transformer, wherein the control module 2, the feedback module 4 and the voltage stabilizing module 5 all adopt forward secondary winding small current output, the output module 3 adopts flyback secondary winding large current output, the feedback module 4 is provided with a high frequency pulse control unit 401, the high frequency pulse control unit 401 is connected to a secondary winding output end of the feedback module 4 through an output end of an optical coupler 402, the high frequency pulse control unit 401 is electrically connected to the conversion module 1, the output module 3 is provided with a voltage adjusting unit 301, the voltage adjusting unit 301 is connected to the feedback module 4 through an input end of the optical coupler 402, the control module 2 is connected to the output end of the voltage stabilizing module 5 through a display control unit 202.
Output module 3 uses flyback transformer, can realize output circuit's voltage regulation by a wide margin, in order not to influence control module 2 feedback module 4 with voltage stabilizing module 5, control module 2 feedback module 4 with voltage stabilizing module 5 all uses forward transformer, adopts forward and reverse output to mutually support, both can realize output module 2 when adjusting output voltage by a wide margin, also can not influence control module 2 feedback module 4 with voltage stabilizing module 5's normal work has solved charging circuit and can not adjust charging voltage's problem by a wide margin, also provides probably for the power supply of circuit integral type. When the circuit is powered on, the conversion module 1 performs conversion between alternating current and direct current, and the control module 2, the feedback module 4 and the voltage stabilizing module 5 work through a high-frequency transformer, and are respectively controlled by the circuit to perform voltage stabilizing output. The feedback module 4 controls the switches of the three forward transformers through the high-frequency pulse control unit 401, when the control module 2, the feedback module 4 and the voltage stabilizing module 5 are disconnected, the flyback transformer of the output module 3 is equivalent to an inductor to perform the output of the charging circuit, and the control module 2, the feedback module 4 and the voltage stabilizing module 5 cannot be influenced by adjusting the output voltage in a large range. The output module 3 adjusts the voltage through the voltage adjusting unit 301, and controls the feedback module to feed back the voltage, so as to realize integrated self-power supply.
Further, as shown in fig. 2, the conversion module 1 includes a high frequency filter 101, a rectifier bridge 102, and a high frequency spike absorption circuit 103, the high frequency filter 101 and the rectifier bridge 102 are connected to the conversion module 1 in parallel, the high frequency spike absorption circuit 103 and the high frequency pulse control unit 401 are connected to the conversion module 1 in series, and an NTC thermistor 104 is connected to an input port of the conversion module 1.
Conversion module 1 pass through high frequency filter 101 rectifier bridge 102 with high frequency peak absorption circuit 103 passes through the filtering rectification with the alternating current and absorbs the conversion into the direct current with the peak, provides operating voltage for the transformer, NTC thermistor 105 can prevent that the surge current phenomenon from damaging component and battery charging outfit in the higher alternating current of circuit access voltage, can effectual protection circuit structure and battery charging outfit's safety.
Further, as shown in fig. 2, an MOS tube 302 is disposed at an output end of the output module 3, the MOS tube 302 is connected in series to a positive circuit of the output module 3, a gate of the MOS tube 302 is connected to a collector of the triode 201 of the control module 2, a positive electrode of the output end of the output module 3 is also connected in series to a PTC thermistor 303, the voltage adjusting unit 301 of the output module 3 is connected to an input end of the optical coupler 402, and the voltage adjusting unit 301 is connected to an input end of the optical coupler 402.
Output module 3 MOS pipe 302 with components and parts such as triode 201 are in play the effect of charging output control in output module 3, output module 3 controls charging circuit's switch behind the regulated voltage by a wide margin, carries out protection circuit. The PTC thermistor 303 is a polymer restorable material, and can prevent the phenomena of over-high temperature, over-current and the like in a circuit, thereby protecting the safety of the circuit and the safety of charging equipment. The output module 3 is connected to the optical coupler 402 through the voltage adjusting unit 301 for feedback, and controls the operation of the feedback module 4, so as to implement normal operation of the circuit.
Further, as shown in fig. 2, a display control unit 202 is disposed at a base of the triode 201 of the control module 2, the display control unit 202 is disposed with a constant current unit 203, and the constant current unit 203 is respectively connected to an output end of the output module 3 and the voltage adjusting unit 301.
Control module 2 connects MOS pipe 301, MOS pipe can play the effect of switch, combines control module can effectually prevent that battery charging outfit's state is bad and the reversal connects, plays the electric control protect function. The display control unit 202 is used for expanding the functions of the circuit, and can display charging information of the present invention. Meanwhile, the constant current unit 203 compares the current magnitude through a comparison operator, so that the circuit is suitable for various charging devices with different charging current magnitudes, and plays a role in protecting the circuit and the charging devices.
Further, as shown in fig. 2, the output end of the secondary winding of the forward transformer of the voltage stabilizing module 5 is connected in series to a 7805 voltage stabilizing chip 501, and the +5V output end of the 7805 voltage stabilizing chip 501 is connected to the +5V input end of the display control unit 202.
Voltage stabilization module 5 passes through output +5V voltage that 7805 steady voltage chip 402 can be stable makes the chip of display control unit 202 normally works, realizes the utility model discloses can adjust the non-interfering control of circuit structure's of charging voltage's integral type and power supply on a large scale.
Further, referring to fig. 2, the voltage adjustment unit 301 and the photo coupler 402 are electrically connected through a schottky diode 304, and the voltage adjustment unit 301 is provided with an adjustable resistor 305.
Voltage adjustment unit 301 is used for adjusting output charging voltage, through adjustable resistance 305 carries out the adjustment of charging voltage size, does simultaneously optical coupler 402 provides operating voltage, carries out optical feedback, and the current of the module 4 that feeds back is fed back in the noiseless enlargies, and then control circuit's work.
Further, as shown in fig. 2, the display function of the display control unit 202 of the present invention can be changed to a functional circuit such as a heat dissipation circuit to realize other auxiliary functions and further optimize the circuit structure.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a can adjust circuit structure of charging voltage on a large scale, its characterized in that, including conversion module (1) and through control module (2), output module (3), feedback module (4) and steady voltage module (5) that same multiplexed output high frequency transformer is connected respectively with conversion module (1), control module (2), feedback module (4) and steady voltage module (5) all adopt the output of forward secondary winding undercurrent, output module (3) adopt the output of flyback secondary winding heavy current, feedback module (4) are equipped with high frequency pulse control unit (401), high frequency pulse control unit (401) connect through the output of optical coupler (402) the secondary winding output of feedback module (4), high frequency pulse control unit (401) electric connection conversion module (1), the output module (3) is provided with a voltage adjusting unit (301), the voltage adjusting unit (301) is connected with the feedback module (4) through the input end of the optical coupler (402), and the control module (2) is connected with the output end of the voltage stabilizing module (5) through a display control unit (202).
2. The circuit structure capable of widely adjusting charging voltage according to claim 1, wherein the conversion module (1) comprises a high frequency filter (101), a rectifier bridge (102) and a high frequency spike absorption circuit (103), the high frequency filter (101) and the rectifier bridge (102) are connected in parallel to the conversion module (1), the high frequency spike absorption circuit (103) and the high frequency pulse control unit (401) are connected in series to the conversion module (1), and an input port of the conversion module (1) is connected with an NTC thermistor (104).
3. The circuit structure capable of adjusting the charging voltage in a wide range according to claim 1, wherein an MOS transistor (302) is disposed at an output end of the output module (3), the MOS transistor (302) is connected in series with a positive circuit of the output module (3), a gate of the MOS transistor (302) is connected to a collector of the triode (201) of the control module (2), a PTC thermistor (303) is further connected in series with a positive electrode of an output end of the output module (3), the voltage adjusting unit (301) of the output module (3), and the voltage adjusting unit (301) is connected to an input end of the optocoupler (402).
4. The circuit structure capable of adjusting charging voltage in a wide range according to claim 3, wherein a display control unit (202) is disposed at a base of the triode (201) of the control module (2), the display control unit (202) is provided with a constant current unit (203), and the constant current unit (203) is respectively connected with an output end of the output module (3) and the voltage adjusting unit (301).
5. The circuit structure capable of widely adjusting charging voltage according to claim 1, wherein the output terminal of the secondary winding of the forward transformer of the voltage stabilizing module (5) is connected in series with a 7805 voltage stabilizing chip (501), and the +5V output terminal of the 7805 voltage stabilizing chip (501) is connected to the +5V input terminal of the display control unit (202).
6. The circuit structure capable of widely adjusting charging voltage according to claim 1, wherein the voltage adjustment unit (301) and the optocoupler (402) are electrically connected through a schottky diode (304), and the voltage adjustment unit (301) is provided with an adjustable resistor (305).
CN202023304377.6U 2020-12-31 2020-12-31 Circuit structure capable of adjusting charging voltage in large range Active CN214429306U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023304377.6U CN214429306U (en) 2020-12-31 2020-12-31 Circuit structure capable of adjusting charging voltage in large range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023304377.6U CN214429306U (en) 2020-12-31 2020-12-31 Circuit structure capable of adjusting charging voltage in large range

Publications (1)

Publication Number Publication Date
CN214429306U true CN214429306U (en) 2021-10-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023304377.6U Active CN214429306U (en) 2020-12-31 2020-12-31 Circuit structure capable of adjusting charging voltage in large range

Country Status (1)

Country Link
CN (1) CN214429306U (en)

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Address after: 528000, Building 402, No. 4 Guda Road, Zhangcha Street, Chancheng District, Foshan City, Guangdong Province (Residence Declaration)

Patentee after: Foshan Huanteng Technology Co.,Ltd.

Address before: 528000 floor 5, building 1, No.4 Guda Road, Chancheng District, Foshan City, Guangdong Province (self compiled 506) (address declaration)

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