CN107124029A - Charger - Google Patents

Charger Download PDF

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Publication number
CN107124029A
CN107124029A CN201710540893.2A CN201710540893A CN107124029A CN 107124029 A CN107124029 A CN 107124029A CN 201710540893 A CN201710540893 A CN 201710540893A CN 107124029 A CN107124029 A CN 107124029A
Authority
CN
China
Prior art keywords
constant
circuit
voltage
control circuit
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201710540893.2A
Other languages
Chinese (zh)
Inventor
潘少辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Baoli Electronic Co. Ltd.
Original Assignee
BAOLI NEW ENERGY TECHNOLOGY (DONGGUAN) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BAOLI NEW ENERGY TECHNOLOGY (DONGGUAN) Co Ltd filed Critical BAOLI NEW ENERGY TECHNOLOGY (DONGGUAN) Co Ltd
Priority to CN201710540893.2A priority Critical patent/CN107124029A/en
Publication of CN107124029A publication Critical patent/CN107124029A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage

Abstract

The invention provides a kind of charger, including:EMC filter circuit, high-voltage rectifying filter circuit, high-frequency isolation reduction voltage circuit, FET control circuit, PWM controller, feedback circuit, constant-current and constant-voltage control circuit, MCU controllers and charging output end;FET control circuit is used to control whether the charging output end normally exports;PWM controller is used to produce short square ripple, promotes late-class circuit to carry out power output;Constant-current and constant-voltage control circuit is used to control the charging output end to export constant current or constant voltage;MCU controllers are used to realize wrong battery detecting successively, devulcanization, low current precharge, constant-current charge, constant-voltage charge, Analysis Block voltage, floating charging, the charge mode of pulse charge.The charger has a variety of charge modes, and charge efficiency is high, and electric energy loss is low, and battery is long.

Description

Charger
Technical field
The invention belongs to charger technologies field, and in particular to charger.
Background technology
Charged in the market more than the charger of lead-acid battery using single constant voltage and current limiting mode, due to charger Charging modes it is single, the charge efficiency of its charger is relatively low, and electric energy loss is big, and the service life of lead-acid battery also compares Short, it is high to meet charge efficiency how to provide a kind of intelligent charger of multisection type Charge Management, and electric energy loss is low, and battery makes With long lifespan be currently needed for solve a problem.
The content of the invention
To overcome the problems of the prior art, the invention provides a kind of charger, using the teaching of the invention it is possible to provide multisection type Charge Management, Charging in many ways is provided in charging process, the charger charge efficiency is high, electric energy loss is low, and battery is long.
Specifically, the present invention provides a kind of charger, and the charger includes:The charger includes:EMC filtered electricals Road, high-voltage rectifying filter circuit, high-frequency isolation reduction voltage circuit, FET control circuit, PWM controller, feedback circuit, constant current Constant-voltage control circuit, MCU controllers and charging output end;The EMC filter circuit respectively with the high-voltage rectifying filter circuit And the PWM controller is electrically connected with;The high-frequency isolation reduction voltage circuit respectively with the high-voltage rectifying filter circuit, described FET control circuit, the PWM controller and the constant-current and constant-voltage control circuit are electrically connected with;The feedback circuit point It is not electrically connected with the PWM controller and the constant-current and constant-voltage control circuit;The MCU controllers respectively with the constant current Constant-voltage control circuit, FET control circuit and the charging output end are electrically connected with;The FET Circuit is controlled to be electrically connected with the charging output end;The EMC filter circuit is used to eliminate the inductive load during electricity is connected Electromagnetism and the spark interference of generation;The high-voltage rectifying filter circuit and the high-frequency isolation reduction voltage circuit are used for input AC Electricity carries out rectifying and wave-filtering processing and decompression processing successively;FET control circuit is used to controlling the charging output end to be No normal output;The PWM controller is used to produce short square ripple, promotes late-class circuit to carry out power output;The feedback circuit For burning voltage and isolation;The constant-current and constant-voltage control circuit is used to control the charging output end to export constant current or perseverance Determine voltage;The MCU controllers are used to realize wrong battery detecting successively, and devulcanization, low current precharge, constant-current charge is permanent Pressure charging, Analysis Block voltage, floating charging, the charge mode of pulse charge.
As the further improvement of above-mentioned technical proposal, the charger also includes touch control circuit;It is described to touch control Circuit processed is used to select charge mode to be to fill soon or trickle charge.
As the further improvement of above-mentioned technical proposal, the touch chip of the touch control circuit is BS812A.
As the further improvement of above-mentioned technical proposal, the charger also includes thermal-shutdown circuit and reverse connecting protection electricity Road;The thermal-shutdown circuit is used to prevent charging-cell temperature too high, and the reverse-connection protection circuit is used for when external connection battery connects Inverse time protects battery.
As the further improvement of above-mentioned technical proposal, the charger also includes LED indicating circuit;The LED is indicated Circuit is used to indicate charged state.
As the further improvement of above-mentioned technical proposal, the MCU controllers are STMicw Electronics's STM8S003K3 monolithics Machine.
As the further improvement of above-mentioned technical proposal, the operational amplifier of the constant-current and constant-voltage control circuit is 324 fortune Calculate amplifier.
As the further improvement of above-mentioned technical proposal, the photoisolator of the feedback circuit is EL817.
As the further improvement of above-mentioned technical proposal, the PWM controller is LD7750 power management chips.
As the further improvement of above-mentioned technical proposal, the rectification chip of the high-voltage rectifying filter circuit is ABS206.
The technical scheme provided using the present invention, compared with existing known technology, is at least had the advantages that:
(1) wrong battery detecting is provided in battery charging process, devulcanization, low current precharge, constant-current charge, constant pressure is filled Electricity, Analysis Block voltage, floating charging, the charging in many ways such as pulse charge.
(2) charge efficiency is high, and electric energy loss is low, and battery is long.
(3) there is slight vulcanization battery repairing function, can effectively extend the service life of battery
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other related accompanying drawings.
The structural representation for the charger that Fig. 1 provides for one embodiment of the invention.
The structural representation for the charger that Fig. 2 provides for another embodiment of the present invention.
Main element symbol description:
11-EMC filter circuits, 12- high-voltage rectifyings filter circuit, 13- high-frequency isolations reduction voltage circuit, 14- field-effect management and control Circuit processed, 15-PWM controllers, 16- feedback circuits, 17- constant-current and constant-voltage control circuits, 18-MCU controllers, 19- touch controls Circuit, 20- thermal-shutdown circuits, 21- reverse-connection protection circuits, 22-LED indicating circuits.
Embodiment
Hereinafter, the various embodiments of the disclosure will be described more fully.The disclosure can have various embodiments, and It can adjust and change wherein.It should be understood, however, that:It is limited to spy disclosed herein in the absence of by the various embodiments of the disclosure Determine the intention of embodiment, but the disclosure should be interpreted as covering in the spirit and scope for the various embodiments for falling into the disclosure All adjustment, equivalent and/or alternative.
Hereinafter, the term " comprising " that can be used in the various embodiments of the disclosure or " may include " indicate disclosed Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as existing Used in the various embodiments of the disclosure, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number Word, step, operation, element, the combination of component or foregoing item, and be understood not to exclude first one or more other Feature, numeral, step, operation, element, the presence of the combination of component or foregoing item or increase one or more features, numeral, Step, operation, element, the possibility of the combination of component or foregoing item.
In the various embodiments of the disclosure, statement " in A or/and B at least one " includes the word listed file names with Any combinations or all combinations." A or B " or " in A or/and B at least one " may include A, may include B or can for example, statement Including A and B both.
The statement (" first ", " second " etc.) used in the various embodiments of the disclosure can be modified to be implemented various Various element in example, but corresponding element can not be limited.For example, presented above be not intended to limit the suitable of the element Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills Put and indicate different user device with second user device, although the two is all user's set.For example, not departing from each of the disclosure In the case of the scope for planting embodiment, the first element is referred to alternatively as the second element, similarly, and the second element is also referred to as first Element.
It should be noted that:, can be by the first composition member if an element ' attach ' to another element by description Part is directly connected to the second element, and " connection " the 3rd can be constituted between the first element and the second element Element.On the contrary, when an element " being directly connected to " is arrived into another element, it will be appreciated that be in the first element And second the 3rd element is not present between element.
The term " user " used in the various embodiments of the disclosure, which may indicate that, to be used the people of electronic installation or uses electricity The device (for example, artificial intelligence electronic installation) of sub-device.
The term used in the various embodiments of the disclosure is only used for describing the purpose of specific embodiment and not anticipated In the various embodiments of the limitation disclosure.As used herein, singulative is intended to also include plural form, unless context is clear Chu it is indicated otherwise.Unless otherwise defined, all terms (including the technical term and scientific terminology) tool being otherwise used herein There is the implication identical implication that the various embodiment one skilled in the art with the disclosure are generally understood that.The term (term such as limited in the dictionary typically used) is to be interpreted as having and the situational meaning in correlative technology field Identical implication and it will be not construed as with Utopian implication or excessively formal implication, unless in the various of the disclosure It is clearly defined in embodiment.
Embodiment 1
As shown in figure 1, the present invention provides a kind of charger, the charger includes:Ac power input end, EMC filtering Circuit 11, high-voltage rectifying filter circuit 12, high-frequency isolation reduction voltage circuit 13, FET control circuit 14, PWM controller 15, Feedback circuit 16, constant-current and constant-voltage control circuit 17, MCU controllers 18 and charging output end.
EMC filter circuit 11 is electrically connected with high-voltage rectifying filter circuit 12 and PWM controller 15 respectively;High-frequency isolation Reduction voltage circuit 13 controls circuit 14, PWM controller 15 and constant current constant voltage with high-voltage rectifying filter circuit 12, FET respectively Control circuit 17 is electrically connected with;Feedback circuit 16 is electrically connected with PWM controller 15 and constant-current and constant-voltage control circuit 17 respectively; MCU controllers 18 are electrical with constant-current and constant-voltage control circuit 17, FET control circuit 14 and the charging output end respectively Connection;FET controls circuit 14 to be electrically connected with the charging output end.In the present embodiment, the charging output end connects Connect 12V batteries.
EMC filter circuit 11 is used to eliminate the electromagnetism and spark interference that inductive load is produced during electricity is connected;High repoussage Flowing filter circuit 12 and high-frequency isolation reduction voltage circuit 13 is used to carry out at rectifying and wave-filtering processing and decompression input AC electricity successively Reason;FET control circuit 14 is used to control whether the charging output end normally exports;PWM controller 15 is short for producing Square ripple, promotes late-class circuit to carry out power output;Feedback circuit 16 is used for burning voltage and isolation;Constant-current and constant-voltage control circuit 17 For controlling the charging output end to export constant current or constant voltage;MCU controllers 18 are used to realize wrong battery successively Detection, devulcanization, low current precharge, constant-current charge, constant-voltage charge, Analysis Block voltage, floating charging, the charging mould of pulse charge Formula.
MCU controllers 18 are STMicw Electronics's STM8S003K3 single-chip microcomputers.
The operational amplifier of constant-current and constant-voltage control circuit 17 is 324 operational amplifiers.
The photoisolator of feedback circuit 16 is EL817.
PWM controller 15 is LD7750 power management chips.
The rectification chip of high-voltage rectifying filter circuit 12 is ABS206.
Embodiment 2
As shown in Fig. 2 the present invention provides a kind of charger, the charger includes:Ac power input end, EMC filtering Circuit 11, high-voltage rectifying filter circuit 12, high-frequency isolation reduction voltage circuit 13, FET control circuit 14, PWM controller 15, Feedback circuit 16, constant-current and constant-voltage control circuit 17, MCU controllers 18, touch control circuit 19, thermal-shutdown circuit 20, reversal connection Protection circuit 21, LED indicating circuit 22 and charging output end.
EMC filter circuit 11 is electrically connected with high-voltage rectifying filter circuit 12 and PWM controller 15 respectively;High-frequency isolation Reduction voltage circuit 13 controls circuit 14, PWM controller 15 and constant current constant voltage with high-voltage rectifying filter circuit 12, FET respectively Control circuit 17 is electrically connected with;Feedback circuit 16 is electrically connected with PWM controller 15 and constant-current and constant-voltage control circuit 17 respectively; MCU controllers 18 are protected with constant-current and constant-voltage control circuit 17, FET control circuit 14, touch control circuit 19, excess temperature respectively Protection circuit 20, reverse-connection protection circuit 21, LED indicating circuit 22 and the charging output end are electrically connected with;FET is controlled Circuit 14 is electrically connected with the charging output end.In the present embodiment, the charging output end connection 12V batteries.
EMC filter circuit 11 is used to eliminate the electromagnetism and spark interference that inductive load is produced during electricity is connected.
High-voltage rectifying filter circuit 12 and high-frequency isolation reduction voltage circuit 13 are used to carry out rectification filter successively to input AC electricity Ripple processing and decompression processing.
FET control circuit 14 is used to control whether the charging output end normally exports.
PWM controller 15 is used to produce short square ripple, promotes late-class circuit to carry out power output.
Feedback circuit 16 is used for burning voltage and isolation.
Constant-current and constant-voltage control circuit 17 is used to control the charging output end to export constant current or constant voltage.
MCU controllers 18 are used to realize wrong battery detecting successively, devulcanization, low current precharge, constant-current charge, constant pressure Charging, Analysis Block voltage, floating charging, the charge mode of pulse charge.
Touch control circuit 19 is used to select charge mode to be to fill soon or trickle charge.
Thermal-shutdown circuit 20 is used to prevent charging-cell temperature too high.
Reverse-connection protection circuit 21 is used to protect battery when external connection battery is reversed.
LED indicating circuit 22 is used to indicate charged state.
MCU controllers 18 are STMicw Electronics's STM8S003K3 single-chip microcomputers.
The operational amplifier of constant-current and constant-voltage control circuit 17 is 324 operational amplifiers.
The photoisolator of feedback circuit 16 is EL817.
PWM controller 15 is LD7750 power management chips.
The rectification chip of high-voltage rectifying filter circuit 12 is ABS206.
The touch chip of touch control circuit 19 is BS812A.
MCU controllers 18 are used to realize wrong battery detecting successively, devulcanization, low current precharge, constant-current charge, constant pressure Charging, Analysis Block voltage, floating charging, the charge mode of pulse charge.Charging process is added with the charger marked as 12V below With explanation.
Charger carries out following charging operations to rechargeable battery:
1. wrong battery detecting
Quality for detecting battery to be charged.Mistake battery automatic identification simultaneously reports an error, when charger opens charge function The preceding voltage for first recognizing battery to be charged, when the voltage that the charger detects battery to be charged is higher than 15V, is then determined as mistake Battery;Charger can send false alarm by indicator lamp or buzzer, and reminding user's access cell voltage is too high can energy loss Bad charger.
2. devulcanization
Effectively repaired for slightly vulcanizing battery.
The hard crystalline solid of one layer of white of surface attachment of negative plate inside lead-acid accumulator, can not still be peeled off after charging Negative plate surface conversion is the lead sulfate of active material, here it is sulfation, referred to as " vulcanization ".
Devulcanization fills mode using arteries and veins, specially charges 1 second and discharges 0.5 second, if battery in a charge and discharge process Voltage change then terminates devulcanization into low current priming mode less than 2V.When the devulcanization time reach default 4 it is small when after, fill Electrical equipment also can be automatically into low current priming mode.
3. low current preliminary filling
When the voltage of battery is less than 10V, charged using 1A low current.
4. constant-current charge
The rechargeable battery main charging stage, lower in this mode to be charged using maximum current, 70%~85% electricity is at this Stage completes, can quick charge charging.
5. constant-voltage charge
After constant-current charge terminates, cell voltage reaches a constant voltage, and the voltage for keeping this constant fills to battery Electricity, during constant-voltage charge, cell voltage meeting more and more higher, electric current can be less and less, when charging current drops to a certain set During definite value, constant-voltage charge terminates, and is then transferred to next stage charging, and constant voltage charging phase is exactly, to battery boost charge, to terminate When battery be filled substantially with.
6. voltage analysis
Changed by the automatic detection battery voltage of MCU controllers 18, letter is sent if detection voltage change range is more than 2V Breath prompting.
7. floating charge
The floating charge stage is actually also constant-voltage charge, and simply charging voltage is relatively low, electric current is smaller, category maintenance charging, is led to Battery electric quantity can be charged to close to 100% by crossing floating charge.
8. pulse charge
When cell voltage returns to 12.9V, charged with the mode of pulse.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, and the quality of implement scene is not represented.Disclosed above is only the present invention Several specific implementation scenes, still, the present invention is not limited to this, and the changes that any person skilled in the art can think of is all Protection scope of the present invention should be fallen into.

Claims (10)

1. a kind of charger, it is characterised in that the charger includes:EMC filter circuit, high-voltage rectifying filter circuit, high frequency Isolated buck circuit, FET control circuit, PWM controller, feedback circuit, constant-current and constant-voltage control circuit, MCU controllers and Charge output end;The EMC filter circuit electrically connects with the high-voltage rectifying filter circuit and the PWM controller respectively Connect;The high-frequency isolation reduction voltage circuit respectively with the high-voltage rectifying filter circuit, FET control circuit, described PWM controller and the constant-current and constant-voltage control circuit are electrically connected with;The feedback circuit respectively with the PWM controller and The constant-current and constant-voltage control circuit is electrically connected with;The MCU controllers are imitated with the constant-current and constant-voltage control circuit, the field respectively Management and control circuit and the charging output end is answered to be electrically connected with;The FET control circuit is exported with the charging End is electrically connected with;The EMC filter circuit is used to eliminate the electromagnetism and spark interference that inductive load is produced during electricity is connected;Institute Stating high-voltage rectifying filter circuit and the high-frequency isolation reduction voltage circuit is used to carry out rectifying and wave-filtering processing successively to input AC electricity With decompression processing;The FET control circuit is used to control whether the charging output end normally exports;The PWM controls Device is used to produce short square ripple, promotes late-class circuit to carry out power output;The feedback circuit is used for burning voltage and isolation;It is described Constant-current and constant-voltage control circuit is used to control the charging output end to export constant current or constant voltage;The MCU controllers are used In realizing wrong battery detecting successively, devulcanization, low current is pre-charged, constant-current charge, constant-voltage charge, Analysis Block voltage, floating charge Electricity, the charge mode of pulse charge.
2. charger according to claim 1, it is characterised in that the charger also includes touch control circuit;It is described Touch control circuit is used to select charge mode to be to fill soon or trickle charge.
3. charger according to claim 2, it is characterised in that the touch chip of the touch control circuit is BS812A。
4. charger according to claim 1, it is characterised in that the charger also includes thermal-shutdown circuit and reversal connection Protection circuit;The thermal-shutdown circuit is used to prevent charging-cell temperature too high, and the reverse-connection protection circuit is used for when external Battery is protected when battery is reversed.
5. charger according to claim 1, it is characterised in that the charger also includes LED indicating circuit;It is described LED indicating circuit is used to indicate charged state.
6. charger according to claim 1, it is characterised in that the MCU controllers are STMicw Electronics STM8S003K3 single-chip microcomputers.
7. charger according to claim 1, it is characterised in that the operational amplifier of the constant-current and constant-voltage control circuit is 324 operational amplifiers.
8. charger according to claim 1, it is characterised in that the photoisolator of the feedback circuit is EL817.
9. charger according to claim 1, it is characterised in that the PWM controller is LD7750 power management chips.
10. charger according to claim 1, it is characterised in that the rectification chip of the high-voltage rectifying filter circuit is ABS206。
CN201710540893.2A 2017-07-05 2017-07-05 Charger Withdrawn CN107124029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710540893.2A CN107124029A (en) 2017-07-05 2017-07-05 Charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710540893.2A CN107124029A (en) 2017-07-05 2017-07-05 Charger

Publications (1)

Publication Number Publication Date
CN107124029A true CN107124029A (en) 2017-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710540893.2A Withdrawn CN107124029A (en) 2017-07-05 2017-07-05 Charger

Country Status (1)

Country Link
CN (1) CN107124029A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107453461A (en) * 2017-09-06 2017-12-08 合肥伟语信息科技有限公司 Intelligent watch charger and its intelligent watch
CN108494076A (en) * 2018-04-04 2018-09-04 苏州南海道电子科技有限公司 A kind of new energy charger
CN110920427A (en) * 2019-12-06 2020-03-27 株洲大川电子技术有限公司 100W battery charger suitable for unmanned aerial vehicle
WO2021227279A1 (en) * 2020-05-14 2021-11-18 深圳市和惠源电子科技有限公司 Digital fast-charge circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107453461A (en) * 2017-09-06 2017-12-08 合肥伟语信息科技有限公司 Intelligent watch charger and its intelligent watch
CN108494076A (en) * 2018-04-04 2018-09-04 苏州南海道电子科技有限公司 A kind of new energy charger
CN110920427A (en) * 2019-12-06 2020-03-27 株洲大川电子技术有限公司 100W battery charger suitable for unmanned aerial vehicle
WO2021227279A1 (en) * 2020-05-14 2021-11-18 深圳市和惠源电子科技有限公司 Digital fast-charge circuit

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Effective date of registration: 20170912

Address after: 523000 West Industrial Zone, Shek Pai Town, Guangdong, Dongguan

Applicant after: Dongguan Baoli Electronic Co. Ltd.

Address before: 511700 West Industrial Zone, Shek Pai Town, Guangdong, Dongguan

Applicant before: Baoli New Energy Technology (Dongguan) Co., Ltd.

WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20170901