CN218771391U - Charger capable of achieving quick intelligent charging - Google Patents
Charger capable of achieving quick intelligent charging Download PDFInfo
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- CN218771391U CN218771391U CN202222450925.9U CN202222450925U CN218771391U CN 218771391 U CN218771391 U CN 218771391U CN 202222450925 U CN202222450925 U CN 202222450925U CN 218771391 U CN218771391 U CN 218771391U
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Abstract
The utility model discloses a charger for quick intelligent charging, relating to the technical field of chargers, which comprises a constant voltage adjusting module used for constant voltage adjustment and voltage sampling; the first output module is used for detecting, rectifying and filtering the output electric energy; the intelligent control module is used for receiving signals and controlling the module to work; the voltage reduction control module is used for controlling the transmission of electric energy and voltage reduction treatment; the charging control module is used for carrying out secondary voltage reduction regulation; and the current and voltage sampling module is used for sampling the output current and voltage. The utility model discloses quick intelligent charging's charger adopts switching power supply circuit to carry out constant voltage constant current regulation to carry out series connection output through step-down control module and first output module, improve the maximum output power that the charger can provide, carry out step-down regulation to output simultaneously, increase can supply power the interval, make in the interval of supplying power through the electric energy power of intelligent control module intelligent regulation charger output, satisfy the demand of filling soon of equipment then.
Description
Technical Field
The utility model relates to a charger technical field specifically is a quick intelligent charging's charger.
Background
Along with the wide application of new forms of energy lithium cell, electric tool's such as electric automobile and electric bicycle have come into existence by oneself, the charger is as electric tool's the equipment of charging again, provide sufficient electric energy for electric tool, in order to ensure normal demand of charging, current charger is to how short time, quick safety, efficient charge has very high requirement, and the most direct fixed constant voltage constant current electric energy that adopts switching power supply circuit output of present charging charger, can't accomplish quick charge control to different electric tool, lack the self-adaptation ability, the charge time is longer, waste time and energy, work efficiency is low, and the interval scope of the electric energy that provides is less, consequently, remain to improve.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a charger of quick intelligent charging to solve the problem that proposes in the above-mentioned background art.
The basis the embodiment of the utility model provides an in, provide a quick intelligent charging's charger, this quick intelligent charging's charger includes: the intelligent charging system comprises a power supply module, a constant voltage regulation module, a first output module, a voltage reduction control module, a charging control module, a current and voltage sampling module and an intelligent control module;
the power supply module is used for carrying out EMI filtering, voltage reduction and rectification on input electric energy;
the constant voltage regulating module is connected with the power supply module, is used for detecting the voltage output by the first output module, is used for receiving the electric energy output by the power supply module and is matched with the sampling voltage through a constant voltage regulating circuit to carry out constant voltage regulation and output;
the first output module is connected with the constant voltage regulating module and used for receiving the electric energy output by the constant voltage regulating module and carrying out rectification and filtering processing;
the intelligent control module is used for receiving the signal output by the current and voltage sampling module and outputting a pulse signal to control the work of the voltage reduction control module and the charging control module;
the voltage reduction control module is connected with the constant voltage regulation module and the intelligent control module, and is used for receiving the pulse signal and the electric energy output by the constant voltage regulation module, controlling the transmission of the electric energy through a switch control circuit and carrying out voltage reduction treatment on the transmitted electric energy;
the charging control module is connected with the first output module, the voltage reduction control module and the intelligent control module, is used for receiving the electric energy output by the first output module and the voltage reduction control module, and is used for receiving the pulse signal and carrying out voltage reduction regulation and starting and stopping of voltage reduction;
the current and voltage sampling module is connected with the charging control module and the intelligent control module and used for sampling and transmitting the current and voltage output by the charging control module to the intelligent control module.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses quick intelligent charging's charger carries out constant voltage constant current regulation through the electric energy of constant voltage regulation module to the input, so as to provide a stable power supply environment, carry out steady voltage output by first output module and step-down control module, and accessible step-down control module carries out series connection output with first output module, improve the maximum output voltage and the electric current that the charger can provide, step-down control module can carry out step-down regulation simultaneously, then adjust the electric energy of input charge control module, and do further step-down processing by charge control module, so as to increase the power supply interval of charger, when needs carry out quick charging, can suitably adjust the electric energy power of output by intelligent control module, increase the adaptation degree to different electric tools.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a charger for fast and intelligent charging according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a charger for fast and intelligent charging according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of the voltage reduction control module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In embodiment 1, referring to fig. 1, a fast intelligent charging charger includes: the intelligent power supply comprises a power supply module 1, a constant voltage regulation module 2, a first output module 3, a voltage reduction control module 4, a charging control module 5, a current and voltage sampling module 6 and an intelligent control module 7;
specifically, the power module 1 is configured to perform EMI filtering, voltage reduction, and rectification on input electric energy;
the constant voltage adjusting module 2 is connected with the power supply module 1, is used for detecting the voltage output by the first output module 3, and is used for receiving the electric energy output by the power supply module 1 and matching with the sampling voltage through a constant voltage adjusting circuit to perform constant voltage adjustment and output;
the first output module 3 is connected with the constant voltage regulating module 2 and used for receiving the electric energy output by the constant voltage regulating module 2 and performing rectification and filtering processing;
the intelligent control module 7 is used for receiving the signal output by the current and voltage sampling module 6 and outputting a pulse signal to control the work of the voltage reduction control module 4 and the charging control module 5;
the voltage reduction control module 4 is connected with the constant voltage regulation module 2 and the intelligent control module 7, and is used for receiving the pulse signal and the electric energy output by the constant voltage regulation module 2, controlling the transmission of the electric energy through a switch control circuit, and reducing the voltage of the transmitted electric energy;
the charging control module 5 is connected with the first output module 3, the voltage reduction control module 4 and the intelligent control module 7, is used for receiving the electric energy output by the first output module 3 and the voltage reduction control module 4, and is used for receiving the pulse signal, performing voltage reduction regulation and starting and stopping voltage reduction;
and the current and voltage sampling module 6 is connected with the charging control module 5 and the intelligent control module 7 and is used for sampling the current and voltage output by the charging control module 5 and transmitting the current and voltage to the intelligent control module 7.
In a specific embodiment, the power module 1 may use an AC source AC, an EMI filter voltage reducer, a rectifier T1, and a filter capacitor C1 to complete processing of input electric energy; the constant voltage adjusting module 2 can adopt a switching power supply circuit to complete constant voltage and constant current control on input electric energy; the first output module 3 is used as a first output path of the constant voltage regulating module 2, and a diode and a filter capacitor are adopted to finish rectification and filtering processing of output electric energy; the voltage reduction control module 4 can adopt a power tube control circuit and a Buck circuit to realize the output of electric energy and the voltage reduction control of the electric energy; the charging control module 5 can adopt a Buck circuit to complete the control of the total input electric energy; the current and voltage sampling module 6 can adopt a resistance voltage division circuit and a current sampling resistor to respectively finish sampling of output voltage and current; the above-mentioned intelligent control module 7 can adopt a micro control circuit and a driving circuit, wherein the micro control circuit can adopt, but is not limited to microcontrollers such as a single chip microcomputer, a DSP, etc., and the driving circuit can select a driver U1 specific to an MOS transistor for improving the driving capability of the pulse signal, which is not limited herein.
In this embodiment, referring to fig. 2 and fig. 3, the constant voltage adjusting module 2 includes a first resistor R1, a second capacitor C2, a first diode D1, a driver U1, a high frequency transformer W1, a third diode D3, a fifth capacitor C5, a first optocoupler U2, a third resistor R3, a second resistor R2, and a sixth capacitor C6;
specifically, one end of the first resistor R1, one end of the second capacitor C2, and a first end of a primary winding of the high-frequency transformer W1 are connected to the power module 1, the other end of the first resistor R1 is connected to the other end of the second capacitor C2 and a cathode of the first diode D1, an anode of the first diode D1 is connected to a second end of the primary winding of the high-frequency transformer W1 and a first end of the driver U1, a first secondary winding and a second secondary winding of the high-frequency transformer W1 are respectively connected to the first output module 3 and the voltage reduction control module 4, a first end of an auxiliary winding of the high-frequency transformer W1 is connected to an anode of the third diode D3, a cathode of the third diode D3 is connected to a third end of the first optocoupler U2 and is connected to a second end of the auxiliary winding of the high-frequency transformer W1, the other end of the sixth capacitor C6, a second end and a ground end of the driver U1 through the fifth capacitor C5, a first end of the first optocoupler U2 is connected to a second end of the first optocoupler U2, and a first end of the first optocoupler U2 is connected to the second end of the first optocoupler R2 through the first resistor R2.
In a specific embodiment, the driver U1 may be selected from, but not limited to, LNK364PN, TOP221, and other chips; the first resistor R1, the second capacitor C2 and the first diode D1 can form an RCD absorption circuit; the first optocoupler U2 can be a PC817 photoelectric coupler and is matched with a third resistor R3, a second resistor R2, a third diode D3 and a fifth capacitor C5 to form a resistor sampling isolation feedback circuit.
Further, the first output module 3 includes a second diode D2, a third capacitor C3, a first inductor L1, and a fourth capacitor C4;
specifically, an anode of the second diode D2 is connected to a first end of the first secondary winding of the high-frequency transformer W1, one end of the third capacitor C3 and a first end of the fourth capacitor C4 are both connected to a second end of the first secondary winding of the high-frequency transformer W1 and a second end of the second resistor R2, and a cathode of the second diode D2 is connected to the other end of the third capacitor C3 and a first end of the second resistor R2 and is connected to a second end of the fourth capacitor C4 through the first inductor L1.
Further, the step-down control module 4 includes a ninth diode D9, a ninth capacitor C9, a tenth resistor R10, a seventh diode D7, a fifth switching tube D5, an eleventh resistor R11, a third power tube Q3, a twelfth resistor R12, a thirteenth resistor R13, an eleventh capacitor C11, and a fourth switching tube VT4;
specifically, an anode of the ninth diode D9 is connected to the first end of the second secondary winding of the high-frequency transformer W1, one end of a ninth capacitor C9, a cathode of the seventh diode D7, a base of the fifth switching tube D5, and one end of a thirteenth resistor R13 are all connected to the second end of the second secondary winding of the high-frequency transformer W1, a cathode of the ninth diode D9 is connected to the other end of the ninth capacitor C9, one end of a tenth resistor R10, and a source of the third power tube Q3, the other end of the tenth resistor R10 is connected to an anode of the seventh diode D7 and an emitter of the fifth switching tube D5, a collector of the fifth switching tube D5 is connected to one end of a twelfth resistor R12 and a gate of the third power tube through an eleventh resistor R11, the other end of the twelfth resistor R12 is connected to a collector of the fourth switching tube VT4 and a ground, the other end of the thirteenth resistor R13, and an emitter of the fourth switching tube VT4 through the eleventh capacitor C11, and a base of the fourth switching tube VT4 is connected to the intelligent control module 7.
In a specific embodiment, the third power transistor Q3 may be a P-channel enhancement MOS transistor; the fifth switching tube D5 and the fourth switching tube VT4 may both be NPN transistors, and are configured to control a working state of the third power tube Q3.
Further, the buck control module 4 further includes a fourth power tube Q4, a third inductor L3, an eighth diode D8, and a tenth capacitor C10;
specifically, the drain of the fourth power tube Q4 is connected to the drain of the third power tube Q3, the source of the fourth power tube Q4 is connected to the cathode of the eighth diode D8, one end of the tenth capacitor C10 and the first end of the fourth capacitor C4 through the third inductor L3, the anode of the eighth diode D8 and the other end of the tenth capacitor C10 are both grounded, and the gate of the fourth power tube Q4 is connected to the intelligent control module 7.
In a specific embodiment, the fourth power transistor Q4 may be an N-channel enhancement MOS transistor, and a Buck voltage reducing circuit is formed by the third inductor L3, the eighth diode D8, and the tenth capacitor C10.
Further, the charging control module 5 includes a first switch tube VT1, a fourth diode D4, a fourth resistor R4, a first voltage regulator tube VD1, a seventh capacitor C7, a fifth resistor R5, a first power tube Q1, a second power tube Q2, a fifth diode D5, a sixth diode D6, a second inductor L2, an eighth capacitor C8, and an output port;
specifically, the source of the first power tube Q1, the cathode of the first voltage regulator tube VD1, one end of the fourth resistor R4, and the collector of the first switch tube VT1 are all connected to the second end of the fourth capacitor C4, the emitter of the first switch tube VT1 is connected to the anode of the fourth diode D4, the other end of the fourth resistor R4, the anode of the first voltage regulator tube VD1, the gate of the first power tube Q1, and the gate of the second power tube Q2, and is connected to the first end of the seventh capacitor C7 through the fifth resistor R5, the second end of the seventh capacitor C7 is connected to the cathode of the fourth diode D4 and the base of the first switch tube VT1, the drain of the first power tube Q1 is connected to the drain of the second power tube Q2, the source of the second power tube Q2 is connected to the cathode of the fifth diode D5 and the cathode of the sixth diode D6, and is connected to the one end and the output port of the eighth capacitor C8 through the second inductor L2, and the anode of the fifth diode D5, the anode of the sixth diode D6, and the anode of the eighth capacitor C8 are all grounded.
In a specific embodiment, the first switching transistor VT1 may be an NPN transistor; the first power tube Q1 and the second power tube Q2 can be P-channel enhanced MOS tubes; the fifth diode D5 and the sixth diode D6 form a schottky diode group of MBR 1645.
Further, the charging control module 5 further includes a second switching tube VT2, a sixth resistor R6, an eighth resistor R8, a seventh resistor R7, a third switching tube VT3, and a ninth resistor R9;
specifically, a collector of the second switching tube VT2 is connected to a first end of the seventh capacitor C7, a base of the second switching tube VT2 is connected to a collector of the third switching tube VT3 and the intelligent control module 7 through a sixth resistor R6, an emitter of the second switching tube VT2 is connected to one end of a ninth resistor R9 and a ground end through an eighth resistor R8, an emitter of the third switching tube VT3 is connected to the other end of the ninth resistor R9, and a base of the third switching tube VT3 is connected to the intelligent control module 7 through a seventh resistor R7.
In a specific embodiment, the second switching tube VT2 and the third switching tube VT3 may be NPN triodes, where the second switching tube VT2 is used to control the first power tube Q1 and the second power tube Q2, and the third switching tube VT3 is used to control the second switching tube VT 2.
The utility model relates to a charger of quick intelligent charging, provide required electric energy by power module 1, and by driver U1 and the first opto-coupler U2 of constant voltage regulation module 2 cooperation isolation transmission's sampling signal, so as by driver U1 regulation high frequency transformer W1's output electric energy, and for first output module 3 and step-down control module 4 provide steady voltage, handle and export by first output module 3 rectification and filtering, when intelligent control module 7 control step-down control module 4 is out of work, this charger will provide required electric energy by first output module 3, and charge the regulation by charging control module 5, wherein charging control module 5 is controlled by intelligent control module 7, specifically, switch on through intelligent control module 7 output pulse signal control second switch tube VT2, so as to control switching on of first power tube Q1 and second power tube Q2, cooperation second inductance L2, eighth electric capacity C8, fifth diode D5 and sixth diode D6 accomplish step-down control, when needs to accelerate charging rate, the intelligent control module 7 accessible third switch on control module 3 VT and the fourth switch control module 3 of the output power tube VT4, and the output control module VT4 of the output control module 3, and the output control module 4 of the step-down control module 3, and the output control module VT of the output control module 3, and the fourth switch on when the output control module 7 of the step-on, the step-down control module 3, the output control module of the electric energy of the output control module 3, and the fourth switch control module 3, the step-down control module 3, and the fourth switch control module 3, and the output control module 3, and the fourth switch control module of the output control module 3, and the electric energy of the fourth switch control module of the output control module 3, and the electric energy of the fourth switch control module 3, the fourth switch control module of the control module 3 control module of the electric energy of the control module of the step-down, and the fourth switch on, and the fourth switch of the step-down control module 3, the fourth switch are controlled by the fourth switch of the electric energy of the control module, and the control module, the fourth switch of the control module 7, the step-down.
This charger that quick intelligence was charged carries out constant voltage constant current regulation through constant voltage regulation module 2 to the electric energy of input, so as to provide a stable power supply environment, carry out steady voltage output by first output module 3 and step-down control module 4, and accessible step-down control module 4 carries out series output with first output module 3, improve the maximum output voltage and the electric current that the charger can provide, step-down control module 4 can carry out step-down regulation simultaneously, and then adjust the electric energy of input charging control module 5, and do further step-down processing by charging control module 5, so as to increase the power supply interval of charger, when needs carry out quick charge, can suitably adjust the electric energy power of output by intelligent control module 7, increase the adaptation degree to different electric tool.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A charger for quick intelligent charging is characterized in that,
this quick intelligent charging's charger includes: the intelligent charging system comprises a power supply module, a constant voltage regulation module, a first output module, a voltage reduction control module, a charging control module, a current and voltage sampling module and an intelligent control module;
the power supply module is used for carrying out EMI filtering, voltage reduction and rectification on input electric energy;
the constant voltage regulating module is connected with the power supply module, is used for detecting the voltage output by the first output module, is used for receiving the electric energy output by the power supply module and is matched with the sampling voltage through a constant voltage regulating circuit to carry out constant voltage regulation and output;
the first output module is connected with the constant voltage regulating module and used for receiving the electric energy output by the constant voltage regulating module and carrying out rectification and filtering processing;
the intelligent control module is used for receiving the signal output by the current and voltage sampling module and outputting a pulse signal to control the work of the voltage reduction control module and the charging control module;
the voltage reduction control module is connected with the constant voltage regulation module and the intelligent control module, and is used for receiving the pulse signal and the electric energy output by the constant voltage regulation module, controlling the transmission of the electric energy through a switch control circuit and carrying out voltage reduction treatment on the transmitted electric energy;
the charging control module is connected with the first output module, the voltage reduction control module and the intelligent control module, is used for receiving the electric energy output by the first output module and the voltage reduction control module, and is used for receiving the pulse signal and carrying out voltage reduction regulation and starting and stopping of voltage reduction;
the current and voltage sampling module is connected with the charging control module and the intelligent control module and used for sampling and transmitting the current and voltage output by the charging control module to the intelligent control module.
2. The charger according to claim 1, wherein the constant voltage regulating module comprises a first resistor, a second capacitor, a first diode, a driver, a high frequency transformer, a third diode, a fifth capacitor, a first optocoupler, a third resistor, a second resistor, and a sixth capacitor;
one end of the first resistor, one end of the second capacitor and a first end of a primary winding of the high-frequency transformer are connected with the power supply module, the other end of the first resistor is connected with the other end of the second capacitor and a cathode of the first diode, an anode of the first diode is connected with a second end of the primary winding of the high-frequency transformer and a first end of the driver, a first secondary winding and a second secondary winding of the high-frequency transformer are respectively connected with the first output module and the voltage reduction control module, a first end of an auxiliary winding of the high-frequency transformer is connected with an anode of the third diode, a cathode of the third diode is connected with a third end of the first optocoupler, the first secondary winding and the second secondary winding of the high-frequency transformer are connected with a second end of the auxiliary winding of the high-frequency transformer, the other end of the sixth capacitor, a second end of the driver and a ground end of the first optocoupler, a first end of the first optocoupler is connected with a first end of the second resistor through the third resistor, and a second end of the second resistor is connected with a second end of the first optocoupler.
3. The fast intelligent charging charger according to claim 2, wherein the first output module comprises a second diode, a third capacitor, a first inductor, and a fourth capacitor;
the anode of the second diode is connected with the first end of the first secondary winding of the high-frequency transformer, one end of the third capacitor and the first end of the fourth capacitor are both connected with the second end of the first secondary winding of the high-frequency transformer and the second end of the second resistor, and the cathode of the second diode is connected with the other end of the third capacitor and the first end of the second resistor and is connected with the second end of the fourth capacitor through the first inductor.
4. The charger according to claim 3, wherein the step-down control module comprises a ninth diode, a ninth capacitor, a tenth resistor, a seventh diode, a fifth switch tube, an eleventh resistor, a third power tube, a twelfth resistor, a thirteenth resistor, an eleventh capacitor, and a fourth switch tube;
the positive pole of ninth diode is connected the first end of the second secondary winding of high frequency transformer, the one end of ninth electric capacity, the negative pole of seventh diode, the second end of the second secondary winding of high frequency transformer is all connected to the base of fifth switch tube and the one end of thirteenth resistance, the other end of ninth electric capacity is connected to the negative pole of ninth diode, the one end of tenth resistance and the source electrode of third power tube, the positive pole of seventh diode and the projecting pole of fifth switch tube are connected to the other end of tenth resistance, the one end of twelfth resistance is connected to fifth switch tube collecting electrode and the grid of connecting three power tubes through eleventh resistance, the collecting electrode of fourth switch tube is connected to the other end of twelfth resistance and the earth terminal is connected through eleventh electric capacity, the other end of thirteenth resistance and the projecting pole of fourth switch tube, the base of fourth switch tube is connected intelligent control module.
5. The fast intelligent charging charger according to claim 4, wherein the buck control module further comprises a fourth power transistor, a third inductor, an eighth diode, and a tenth capacitor;
the drain electrode of the fourth power tube is connected with the drain electrode of the third power tube, the source electrode of the fourth power tube is connected with the cathode of the eighth diode, one end of the tenth capacitor and the first end of the fourth capacitor through the third inductor, the anode of the eighth diode and the other end of the tenth capacitor are grounded, and the grid electrode of the fourth power tube is connected with the intelligent control module.
6. The charger according to claim 5, wherein the charging control module comprises a first switching tube, a fourth diode, a fourth resistor, a first voltage regulator tube, a seventh capacitor, a fifth resistor, a first power tube, a second power tube, a fifth diode, a sixth diode, a second inductor, an eighth capacitor, and an output port;
the source electrode of the first power tube, the cathode of the first voltage-regulator tube, one end of a fourth resistor and the collector electrode of the first switch tube are all connected with the second end of the fourth capacitor, the emitter electrode of the first switch tube is connected with the anode of a fourth diode, the other end of the fourth resistor, the anode of the first voltage-regulator tube, the grid electrode of the first power tube and the grid electrode of the second power tube and is connected with the first end of a seventh capacitor through a fifth resistor, the second end of the seventh capacitor is connected with the cathode of the fourth diode and the base electrode of the first switch tube, the drain electrode of the first power tube is connected with the drain electrode of the second power tube, the source electrode of the second power tube is connected with the cathode of the fifth diode and the cathode of the sixth diode and is connected with one end of an eighth capacitor and an output port through a second inductor, and the anode of the fifth diode, the anode of the sixth diode and the other end of the eighth capacitor are all grounded.
7. The charger according to claim 6, wherein said charging control module further comprises a second switch, a sixth resistor, an eighth resistor, a seventh resistor, a third switch, and a ninth resistor;
the collector electrode of the second switch tube is connected with the first end of the seventh capacitor, the base electrode of the second switch tube is connected with the collector electrode of the third switch tube and the intelligent control module through a sixth resistor, the emitter electrode of the second switch tube is connected with one end of a ninth resistor and the ground end through an eighth resistor, the emitter electrode of the third switch tube is connected with the other end of the ninth resistor, and the base electrode of the third switch tube is connected with the intelligent control module through a seventh resistor.
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| CN202222450925.9U CN218771391U (en) | 2022-09-16 | 2022-09-16 | Charger capable of achieving quick intelligent charging |
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| CN202222450925.9U CN218771391U (en) | 2022-09-16 | 2022-09-16 | Charger capable of achieving quick intelligent charging |
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