CN113659840A - Triode voltage-stabilizing charging management circuit - Google Patents

Triode voltage-stabilizing charging management circuit Download PDF

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Publication number
CN113659840A
CN113659840A CN202110898481.2A CN202110898481A CN113659840A CN 113659840 A CN113659840 A CN 113659840A CN 202110898481 A CN202110898481 A CN 202110898481A CN 113659840 A CN113659840 A CN 113659840A
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China
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voltage
coupled
circuit module
output
module
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CN202110898481.2A
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Chinese (zh)
Inventor
沈志坚
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Shenzhen Hottech Electronics Co ltd
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Shenzhen Hottech Electronics Co ltd
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Priority to CN202110898481.2A priority Critical patent/CN113659840A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The invention relates to a triode voltage-stabilizing charging management circuit, which comprises a voltage lifting module, an over-temperature protection linear circuit module and a voltage stabilizing circuit module; one end of the voltage lifting module is connected with alternating current, the other end of the voltage lifting module is coupled with the input end of the over-temperature protection linear circuit module, the output end of the over-temperature protection linear circuit module is coupled with the input end of the voltage stabilizing circuit module, and the output end of the voltage stabilizing circuit module is connected with the equipment to be charged; the voltage-boosting module comprises a pulse frequency modulation unit to form single-pulse high-voltage trickle output, the voltage stabilizing circuit module is provided with a high-voltage detection switch, the high-voltage detection switch is used for the output voltage of the pulse frequency modulation unit, and when the output voltage of the pulse frequency modulation unit is greater than a first threshold value, the output end of the voltage stabilizing circuit module is switched to a reference ground; through high efficiency step-up, output monopulse's stable high pressure, then in order to prevent the overheated of bringing of too high voltage, carry out temperature monitoring and high-voltage monitoring, reach the linear charging effect of steady voltage.

Description

Triode voltage-stabilizing charging management circuit
Technical Field
The invention relates to the technical field of charging, in particular to a triode voltage-stabilizing charging management circuit.
Background
At present, the charging process of a battery is generally divided into four stages: a trickle charge phase, a constant current charge phase, a constant voltage charge phase and a charge termination phase. The trickle charge phase generally refers to a phase of restorative charging of a fully discharged battery, i.e., charging the battery with a small current; the constant current charging stage is a stage of realizing the quick charging of the battery by improving the charging current after the trickle charging stage is finished; when the voltage of the battery rises to be close to saturation, starting a constant voltage charging stage, namely, a stage of reducing the charging current to a smaller value to realize the charging of the battery; when the voltage of the battery reaches saturation, a charging termination stage is entered, namely, the battery is stopped being charged. But the charging needs to be more and more frequent at present, and the required voltage is more and more; however, the existing voltage boosting mode is a capacitor boosting mode, but the capacitor boosting is easy to bring high-voltage oscillation pulses, and the high-voltage oscillation pulses are easy to cause overload and pulse oscillation on a subsequent charging switch circuit, so that the charging voltage is unstable, and components are easy to damage; there is a need for a linear regulated charging circuit that can boost voltage better, output high voltage stably, and prevent over-temperature.
Disclosure of Invention
In order to solve the existing problems, the invention adopts a multi-stage module for processing, the boosting adopts a single pulse output current with continuous resonance current, the stability of boosting and the linear stability degree of current are ensured, then the stability and the temperature of boosting are monitored by an over-stable protection circuit, when the temperature threshold is exceeded, the boosting is disconnected, and meanwhile, the voltage stabilization and the output voltage monitoring are subsequently adopted, so that the linear consistency of the charging voltage is met.
In order to achieve the above object, the present invention provides a triode voltage stabilization charging management circuit, which includes a voltage boost module, an over-temperature protection linear circuit module and a voltage stabilizing circuit module; one end of the voltage raising module is connected with alternating current, the other end of the voltage raising module is coupled with the input end of the over-temperature protection linear circuit module, the output end of the over-temperature protection linear circuit module is coupled with the input end of the voltage stabilizing circuit module, and the output end of the voltage stabilizing circuit module is connected with equipment to be charged; the voltage-boosting circuit comprises a voltage-boosting module and a voltage stabilizing circuit module, wherein the voltage-boosting module comprises a pulse frequency modulation unit to form single-pulse high-voltage trickle output, the voltage stabilizing circuit module is provided with a high-voltage detection switch, the high-voltage detection switch is used for the output voltage of the pulse frequency modulation unit, and when the output voltage of the pulse frequency modulation unit is larger than a first threshold value, the output end of the voltage stabilizing circuit module is switched to a reference ground.
Preferably, the voltage boost module further comprises a rectifier, a boost transformer and a capacitor output unit; the rectifier converts alternating current into direct current to be input into the pulse frequency modulation unit, and the voltage between the pulse frequency modulation unit and the capacitor output unit is boosted through the boosting transformer.
Preferably, the pulse frequency modulation unit comprises two groups of PNP type triode circuits connected in parallel, two PNP type triodes are connected in series on each PNP type triode circuit, and high-voltage rectifier diodes are connected in parallel and in reverse on the PNP type triodes.
Preferably, the pulse frequency modulation unit includes a first PNP type triode, a second PNP type triode, a third PNP type triode, and a fourth PNP type triode, wherein a collector of the first PNP type triode is coupled to the positive electrode of the direct current, an emitter of the first PNP type triode is coupled to a collector of the second PNP type triode, an emitter of the second PNP type triode is coupled to the negative electrode of the direct current, a collector of the third PNP type triode is coupled between the positive electrode of the direct current and the collector of the first PNP type triode, an emitter of the third PNP type triode is coupled to a collector of the fourth PNP type triode, and an emitter of the fourth PNP type triode is coupled between the negative electrode of the direct current and the emitter of the second PNP type triode; and high-voltage rectifier diodes are reversely connected in parallel among the collector electrodes and the emitter electrodes of the first PNP type triode, the second PNP type triode, the third PNP type triode and the fourth PNP type triode.
Preferably, the step-up transformer comprises a first capacitor, a first inductor and a second capacitor which are connected in series; the first end of the first capacitor is coupled between the emitter of the first PNP type triode and the collector of the second PNP type triode, the first end of the second capacitor is coupled with the first inductor, and the second end of the second capacitor is coupled between the collector of the third PNP type triode and the collector of the fourth PNP type triode; the two ends of the second capacitor are also connected with the first coil of the booster in parallel, and the two ends of the second coil are coupled with the third capacitor.
Preferably, an input point of the over-temperature protection linear circuit module is coupled to a discharge end of the third capacitor, the other end of the over-temperature protection linear circuit module is coupled to a VSS pin of the first chip, a charging output pin of the first chip is coupled to a base electrode of the first NPN type triode, an emitter electrode of the first NPN type triode is coupled to the voltage regulator circuit module, and a collector electrode of the first NPN type triode is coupled to a discharge end of the third capacitor.
Preferably, the first chip further includes a temperature comparison pin and a constant voltage comparison input pin, the temperature comparison pin is used for detecting the temperature of the third capacitor input point, and the constant voltage comparison input pin is used for detecting the voltage of the third capacitor input point.
Preferably, the first chip further comprises an LED output pin, and the LED output pin is connected with a light emitting diode.
Preferably, the input end of the voltage stabilizing circuit module is connected to a VIN pin of the LTC3780 chip and is also coupled to a collector of a fifth PNP type triode, a base of the fifth PNP type triode is coupled to a HO control pin of the LTC3780 chip, an emitter of the fifth PNP type triode is coupled to one end of the second inductor, the other end of the second inductor is coupled to the output end, and a collector of the sixth PNP type triode is coupled between the second inductor and the output end; the emitter of the sixth PNP transistor is grounded, and the base is coupled to the LO control pin of the LTC3780 chip to form a high voltage detection switch.
Preferably, a voltage stabilizing capacitor bank is connected in parallel between the input end of the voltage stabilizing circuit module and the LTC3780 chip, and a voltage stabilizing capacitor bank is connected in parallel between the second inductor and the output end of the voltage stabilizing circuit module.
The invention has the beneficial effects that: the invention provides a triode voltage-stabilizing charging management circuit, which comprises a voltage lifting module, an over-temperature protection linear circuit module and a voltage stabilizing circuit module; one end of the voltage lifting module is connected with alternating current, the other end of the voltage lifting module is coupled with the input end of the over-temperature protection linear circuit module, the output end of the over-temperature protection linear circuit module is coupled with the input end of the voltage stabilizing circuit module, and the output end of the voltage stabilizing circuit module is connected with the equipment to be charged; the voltage-boosting module comprises a pulse frequency modulation unit to form single-pulse high-voltage trickle output, the voltage stabilizing circuit module is provided with a high-voltage detection switch, the high-voltage detection switch is used for the output voltage of the pulse frequency modulation unit, and when the output voltage of the pulse frequency modulation unit is greater than a first threshold value, the output end of the voltage stabilizing circuit module is switched to a reference ground; through high efficiency step-up, output monopulse's stable high pressure, then in order to prevent the overheated of bringing of too high voltage, carry out temperature monitoring and high-voltage monitoring, reach the linear charging effect of steady voltage.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a circuit diagram of a voltage boost module according to the present invention;
FIG. 3 is a circuit diagram of an over-temperature protection linear circuit module according to the present invention;
FIG. 4 is a circuit diagram of a voltage regulator circuit module according to the present invention.
The main element symbols are as follows:
1. a voltage boost module; 2. an over-temperature protection linear circuit module; 3. and the voltage stabilizing circuit module.
Detailed Description
In order to more clearly describe the present invention, the following description is further made with reference to the accompanying drawings.
In the following description, details of general examples are given to provide a more thorough understanding of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. It should be understood that the specific embodiments are illustrative of the invention and are not to be construed as limiting the invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The invention provides a triode voltage-stabilizing charging management circuit, which comprises a voltage lifting module 1, an over-temperature protection linear circuit module 2 and a voltage stabilizing circuit module 3, wherein the voltage lifting module is used for lifting a triode voltage; one end of the voltage lifting module is connected with alternating current, the other end of the voltage lifting module is coupled with the input end of the over-temperature protection linear circuit module, the output end of the over-temperature protection linear circuit module is coupled with the input end of the voltage stabilizing circuit module, and the output end of the voltage stabilizing circuit module is connected with the equipment to be charged; the voltage raising module comprises a pulse frequency modulation unit to form single-pulse high-voltage trickle output, the voltage stabilizing circuit module is provided with a high-voltage detection switch, the high-voltage detection switch is used for the output voltage of the pulse frequency modulation unit, and when the output voltage of the pulse frequency modulation unit is larger than a first threshold value, the output end of the voltage stabilizing circuit module is switched to a reference ground. The voltage lifting module adopts an LCC series-parallel resonant converter, and can realize zero current turn-off by utilizing a triode anti-parallel diode and a high-voltage rectifier diode, so that the energy transmission efficiency and reliability of the circuit are improved; and outputs a single pulse of high voltage; therefore, the linearity of the output is realized, and the oscillation of the traditional lifting circuit is prevented. And in the linear circuit module of excess temperature protection, the intensification that brings to high voltage can real-time supervision, guarantees the charging stability of whole circuit, can continuously output stable trickle in order to guarantee the stability of whole charging circuit. The voltage stabilizing circuit module monitors the direct output voltage of the voltage lifting module by adopting two switching triodes, so that the voltage connected to the chargeable equipment in the subsequent module is ensured not to be too low or too high, if the voltage is too high, the analog grounding is formed, the charging is not carried out, and the charging is continuously finished after the voltage lifting module is stable.
In this embodiment, please refer to fig. 2, the voltage boost module further includes a rectifier, a boost transformer and a capacitor output unit; the rectifier converts alternating current into direct current to be input into the pulse frequency modulation unit, and the voltage between the pulse frequency modulation unit and the capacitor output unit is boosted through the boosting transformer. The constant-current charging is realized by adopting uniform voltage gain, and the trickle charging is carried out by utilizing pulse frequency modulation, so that the rated working point of the trickle output stage enters a low-frequency region, low-frequency noise is not generated, and high-quality voltage stabilization and system stabilization are realized.
In this embodiment, the pulse frequency modulation unit includes two sets of PNP type triode circuits connected in parallel, two PNP type triodes are connected in series on each PNP type triode circuit, and a high voltage rectifier diode is connected in parallel and in reverse on each PNP type triode.
In this embodiment, the pulse frequency modulation unit includes a first PNP transistor (S1), a second PNP transistor (S2), a third PNP transistor (S3), and a fourth PNP transistor (S4), wherein a collector of the first PNP transistor is coupled to the positive dc electrode, an emitter of the first PNP transistor is coupled to a collector of the second PNP transistor, an emitter of the second PNP transistor is coupled to the negative dc electrode, a collector of the third PNP transistor is coupled between the positive dc electrode and the collector of the first PNP transistor, an emitter of the third PNP transistor is coupled to a collector of the fourth PNP transistor, and an emitter of the fourth PNP transistor is coupled between the negative dc electrode and the emitter of the second PNP transistor; and high-voltage rectifier diodes are reversely connected in parallel among the collector electrodes and the emitter electrodes of the first PNP type triode, the second PNP type triode, the third PNP type triode and the fourth PNP type triode.
In the present embodiment, referring to fig. 3, the step-up transformer includes a first capacitor (C) connected in seriesS) A first inductor (L)r) And a second capacitance (C)p) (ii) a The first end of the first capacitor is coupled between the emitter of the first PNP type triode and the collector of the second PNP type triode, the first end of the second capacitor is coupled with the first inductor, and the second end of the second capacitor is coupled between the collector of the third PNP type triode and the fourth PNP type emitter; the first coil of the booster is connected in parallel with the two ends of the second capacitor, and the two ends of the second coil are coupled with a third capacitor (C)o）。
In this embodiment, an input point of the over-temperature protection linear circuit module is coupled to a discharge end of the third capacitor, and the other end of the over-temperature protection linear circuit module is coupled to a VSS pin of the first chip.
In this embodiment, referring to fig. 4, the first chip further includes a temperature comparison pin and a constant voltage comparison input pin, the temperature comparison pin is used for detecting a temperature of the third capacitor input point, and the constant voltage comparison input pin is used for detecting a voltage of the third capacitor input point. The pins in the first chip are defined as follows, VSS: a battery cathode, a power ground pin; LED: an LED drive output pin; VCC: a power supply positive electrode pin; DRC: the charging tube controls an output pin; VT: a temperature comparison input pin; LV: an undervoltage comparison input pin; BAT: a constant voltage comparison input pin; CS: power supply detection input, power supply negative electrode pin. The output of the reference voltage in the butt joint boosting module is realized, the stable voltage linear charging of trickle charging is achieved, and meanwhile, the over-temperature is prevented.
In this embodiment, the first chip further includes an LED output pin, and the LED output pin is connected to a light emitting diode. The input end of the voltage stabilizing circuit module is connected to the VIN pin of the LTC3780 chip and is coupled to the collector of a fifth PNP type triode (Q11), specifically the type of the fifth PNP type triode can be AOD480, the base of the fifth PNP type triode is coupled to the HO control pin of the LTC3780 chip, and the HO pin is additionally connected with a connecting wire at a third capacitor CoTo form a high level detection, to form an analog ground when a threshold is exceeded; an emitter of the fifth PNP triode is coupled with one end of a second inductor (L3), the other end of the second inductor is coupled with the output end, and a collector of the sixth PNP triode is coupled between the second inductor and the output end; the emitter of the sixth PNP transistor (Q12) is grounded, and the base is coupled to the LO control pin of the LTC3780 chip to form a high voltage detection switch. A voltage stabilizing capacitor bank is connected in parallel between the input end of the voltage stabilizing circuit module and the LTC3780 chip, and a voltage stabilizing capacitor bank is connected in parallel between the second inductor and the output end of the voltage stabilizing circuit module.
The invention has the technical effects that:
through high efficiency step-up, output monopulse's stable high pressure, then in order to prevent the overheated of bringing of too high voltage, carry out temperature monitoring and high-voltage monitoring, reach the linear charging effect of steady voltage.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims (10)

1. A triode voltage stabilization charging management circuit is characterized by comprising a voltage lifting module, an over-temperature protection linear circuit module and a voltage stabilizing circuit module; one end of the voltage raising module is connected with alternating current, the other end of the voltage raising module is coupled with the input end of the over-temperature protection linear circuit module, the output end of the over-temperature protection linear circuit module is coupled with the input end of the voltage stabilizing circuit module, and the output end of the voltage stabilizing circuit module is connected with equipment to be charged; the voltage-boosting circuit comprises a voltage-boosting module and a voltage stabilizing circuit module, wherein the voltage-boosting module comprises a pulse frequency modulation unit to form single-pulse high-voltage trickle output, the voltage stabilizing circuit module is provided with a high-voltage detection switch, the high-voltage detection switch is used for the output voltage of the pulse frequency modulation unit, and when the output voltage of the pulse frequency modulation unit is larger than a first threshold value, the output end of the voltage stabilizing circuit module is switched to a reference ground.
2. The triode regulator charging management circuit of claim 1, wherein the voltage boost module further comprises a rectifier, a boost transformer and a capacitor output unit; the rectifier converts alternating current into direct current to be input into the pulse frequency modulation unit, and the voltage between the pulse frequency modulation unit and the capacitor output unit is boosted through the boosting transformer.
3. The triode voltage-stabilizing charge management circuit according to claim 2, wherein the pulse frequency modulation unit comprises two parallel PNP type triode lines, two PNP type triodes are connected in series on each PNP type triode line, and a high-voltage rectifier diode is connected in anti-parallel on each PNP type triode line.
4. The regulated charging management circuit according to claim 3, wherein the pulse frequency modulation unit comprises a first PNP transistor, a second PNP transistor, a third PNP transistor and a fourth PNP transistor, wherein a collector of the first PNP transistor is coupled to the positive DC electrode, an emitter of the first PNP transistor is coupled to a collector of the second PNP transistor, an emitter of the second PNP transistor is coupled to the negative DC electrode, a collector of the third PNP transistor is coupled between the positive DC electrode and the collector of the first PNP transistor, an emitter of the third PNP transistor is coupled to a collector of the fourth PNP transistor, and an emitter of the fourth PNP transistor is coupled between the negative DC electrode and the emitter of the second PNP transistor; and high-voltage rectifier diodes are reversely connected in parallel among the collector electrodes and the emitter electrodes of the first PNP type triode, the second PNP type triode, the third PNP type triode and the fourth PNP type triode.
5. The triode regulator charging management circuit of claim 4, wherein the step-up transformer comprises a first capacitor, a first inductor and a second capacitor connected in series; the first end of the first capacitor is coupled between the emitter of the first PNP type triode and the collector of the second PNP type triode, the first end of the second capacitor is coupled with the first inductor, and the second end of the second capacitor is coupled between the collector of the third PNP type triode and the collector of the fourth PNP type triode; the two ends of the second capacitor are also connected with the first coil of the booster in parallel, and the two ends of the second coil are coupled with the third capacitor.
6. The triode voltage-stabilizing charge management circuit of claim 5, wherein an input terminal of the over-temperature protection linear circuit module is coupled to a discharge terminal of a third capacitor, the other terminal of the over-temperature protection linear circuit module is coupled to a VSS pin of the first chip, a charge output pin of the first chip is coupled to a base electrode of the first NPN type triode, an emitter electrode of the first NPN type triode is coupled to the voltage stabilizing circuit module, and a collector electrode of the first NPN type triode is coupled to a discharge terminal of the third capacitor.
7. The triode regulator charging management circuit of claim 6, wherein the first chip further comprises a temperature comparison pin and a constant voltage comparison input pin, the temperature comparison pin is used for detecting the temperature of the third capacitor input point, and the constant voltage comparison input pin is used for detecting the voltage of the third capacitor input point.
8. The triode regulator charging management circuit of claim 6, wherein the first chip further comprises an LED output pin, and the LED output pin is connected with a light emitting diode.
9. The regulated charging management circuit according to claim 1, wherein the input terminal of the voltage regulator module is connected to the VIN pin of the LTC3780 chip and is also coupled to the collector of a fifth PNP transistor, the base of the fifth PNP transistor is coupled to the HO control pin of the LTC3780 chip, the emitter of the fifth PNP transistor is coupled to one end of the second inductor, the other end of the second inductor is coupled to the output terminal, and the collector of the sixth PNP transistor is coupled between the second inductor and the output terminal; the emitter of the sixth PNP transistor is grounded, and the base is coupled to the LO control pin of the LTC3780 chip to form a high voltage detection switch.
10. The triode regulator charging management circuit of claim 9, wherein a set of regulator capacitors is connected in parallel between the input of the regulator circuit module and the LTC3780 chip, and a set of regulator capacitors is connected in parallel between the second inductor and the output of the regulator circuit module.
CN202110898481.2A 2021-08-05 2021-08-05 Triode voltage-stabilizing charging management circuit Pending CN113659840A (en)

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