CN206820519U - A kind of charge-discharge circuit and portable power source - Google Patents
A kind of charge-discharge circuit and portable power source Download PDFInfo
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- CN206820519U CN206820519U CN201720710114.4U CN201720710114U CN206820519U CN 206820519 U CN206820519 U CN 206820519U CN 201720710114 U CN201720710114 U CN 201720710114U CN 206820519 U CN206820519 U CN 206820519U
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- 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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
A kind of charge-discharge circuit and portable power source, charge-discharge circuit is connected with battery, input interface and output interface, the charge-discharge circuit includes main control module, charge-discharge modules and detection circuit, detection circuit is connected with input interface and output interface, detects input voltage, the voltage x current of charge-discharge modules input and output of the input interface；Main control module controls the charge-discharge modules that input voltage transformation charges for the battery according to the input voltage, exports the cell output voltage transformation to the output interface always according to the voltage x current of the input and output.Above-mentioned charge-discharge circuit can adjust discharge voltage electric current to match charging equipment by detecting charging/discharging voltage electric current, simple, quick charge requirement can be met, optimal charging scheme is provided, prevent because charge protocol mismatches, charging inlet, which mismatches, causes charging rate to expire, charging damage digital electronic goods, interface are unable to charging phenomenon.
Description
Technical field
The utility model belongs to portable power source technical field, more particularly to a kind of charge-discharge circuit and portable power source.
Background technology
At present, with the development of science and technology, increasing digital electronic goods need to use power source charges, this power supply can be with
It is that the power supply with storage electric energy unit device is charged or had both directly to digital electronic goods.Power supply, which can be named, to be filled
It is electric precious, portable power source, fast charge charging portable power source, back splint power supply, external battery, charging partner etc., they are substantially exactly to number
Code electronic product provides the article of electric energy.
And digital electronic goods charge because brand, function, battery capacity all disunities have charging inlet disunity
Voltage disunity, the skimble-scamble problem of charge protocol.It can so cause different digital electronic goods to need different power supplys, make
Into the significant wastage of resource.Accelerate with the development of network information and rhythm of life, people use the time of digital electronic goods
Increasingly longer, frequency of use is more and more, and it is fast, it is necessary to quick electric energy supplement to thereby result in battery power consumption.
Utility model content
The purpose of this utility model is to provide a kind of charge-discharge circuit, it is intended to solves present in traditional technical scheme
The problem of charging voltage and current mismatches with causing charge efficiency.
A kind of charge-discharge circuit, it is connected with battery, input interface and output interface, the charge-discharge circuit includes master control mould
Block, charge-discharge modules and detection circuit, wherein：
The detection circuit is connected with input interface and output interface, detects the input voltage, described of the input interface
The voltage x current of charge-discharge modules input and output；
The charge-discharge modules are connected with the battery, input interface and output interface, and the main control module connects with input
Mouth, output interface, charge-discharge modules and detection circuit connection；
It by input voltage transformation is the electricity that the main control module controls the charge-discharge modules according to the input voltage
Pond is charged, and the main control module exports the cell output voltage transformation to institute always according to the voltage x current of the input and output
State output interface.
Preferably, the charge-discharge modules include voltage transformation unit, input block and output unit, wherein：
The first end of the voltage transformation unit is connected with the input block and output unit, and the second end connects with the battery
Connect, the voltage transformation unit is carried out voltage transformation by the master control module controls will export the supply voltage inputted；
The input block is connected between the input interface and the voltage transformation unit, by the master control module controls with
The input voltage of the input interface is accessed to the voltage transformation unit；
The output unit is connected between the output interface and the voltage transformation unit, by the master control module controls with
The output voltage that the voltage transformation unit exports is output to the output interface.
Preferably, the voltage transformation unit includes first switch chip, second switch chip, the first diode, the two or two pole
Pipe and the first inductor, wherein：
The control of the first switch chip terminates the first PWM control terminals of the main control module；The first switch core
The input of piece is single as the first termination first diode cathode, the input block and output of the voltage transformation unit
Member, the output of the first switch chip terminates the first end of first inductor and first diode anode, described
Positive pole of second end of the first inductor as the second termination battery of the voltage transformation unit；
The control of the second switch chip terminates the 2nd PWM control terminals of the main control module；The second switch core
The input end grounding of piece, the output of the second switch chip terminate the first end of first inductor and the two or two pole
Tube cathode, the second diode anode ground connection.
Preferably, the input block includes first switch module and first switch control module；The first switch mould
The input of block terminates the input interface, and the output of the first switch module terminates the first end of the voltage transformation unit, described
The control of first switch module terminates the first switch control module；The first switch control module and the input interface
Connected with the second control terminal of the main control module, control the break-make of the first switch module.
Preferably, the first switch module includes the first PMOS, drain electrode, source electrode and the grid point of first PMOS
Zuo Wei not first switch module input, output end and the control terminal.
Preferably, the output unit includes second switch module and second switch control module；The second switch mould
The output of block terminates the output interface, and the input of the second switch module terminates the first end of the voltage transformation unit, described
The control of second switch module terminates the second switch control module；The second switch control module and the main control module
The connection of the 3rd control terminal, control the break-make of the second switch module.
Preferably, the second switch module includes two the second PMOSs in parallel, the drain electrode of second PMOS, source
Pole and grid are respectively as second switch module input, output end and the control terminal.
Preferably, the detection circuit includes input detection unit, current detecting unit and voltage detection unit, wherein：
The input detection unit is connected with the input interface and the main control module, detects the input electricity of input interface
Pressure is input to the main control module, and charge-discharge modules described in the fashionable master control module controls of charging are operated in charged state；
The current detecting unit is connected with the output interface, and detection output current feeds back to the main control module, institute
State the break-make that main control module controls the output unit according to the output current；
The voltage detection unit is connected with the second end of the voltage transformation unit, and detection input and output voltage feeds back to described
Main control module, the main control module according to the input and output voltage control the input block and the output unit break-make or
Adjust output voltage size.
Preferably, the input detection unit, current detecting unit and voltage detection unit are made up of potential-divider network.
In addition, additionally providing a kind of portable power source, there is shell, the battery being contained within the shell and be arranged on described
Input interface and output interface on shell, in addition to above-mentioned charge-discharge circuit.
Above-mentioned charge-discharge circuit can adjust discharge voltage electric current by detecting charging/discharging voltage electric current and wait to fill to match
Electric equipment, simple, quick charge requirement can be met, there is provided optimal charging scheme, prevent because charge protocol mismatches, charging
Interface, which mismatches, causes charging rate to expire, and charging damage digital electronic goods, interface is unable to charging phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model portable power source；
Fig. 2 is the electrical block diagram of the utility model charge-discharge circuit；
Fig. 3 is the exemplary circuit schematic diagram of the charge-discharge circuit shown in Fig. 2.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Referring to Fig. 1, a kind of charge-discharge circuit that can apply to portable power source, portable power source includes shell 1, is contained in
Battery (not shown) within the shell and the input interface 2 and output interface 3 being arranged on shell, output interface 3 include
Micro USB interfaces 31, TYPE-C interfaces 32 and Lightning interfaces 33.Input interface 2 is the charging inlet of battery, is tactile
Point mode, by contact, electric energy is provided to power supply.
Referring to Fig. 2, charge-discharge circuit is connected with battery 4, input interface 2 and output interface 4, including main control module 11,
Charge-discharge modules 13 and detection circuit 14.
Detection circuit 13 is connected with input interface 2 and output interface 3, detects input voltage, the discharge and recharge mould of input interface 2
The voltage x current of the input and output of block 13；Charge-discharge modules 13 are connected with battery 4, input interface 2 and output interface 3, main control module
11 are connected with input interface 2, output interface 3, charge-discharge modules 4 and detection circuit 14；Main control module 11 is according to input voltage control
Input voltage transformation is that battery 4 charges by charge-discharge modules 13 processed, and main control module 11 will always according to the voltage x current of input and output
The output voltage transformation of battery 4 is exported to output interface 3.
Specifically, the portable power source in the utility model has an identification label (such as Quick Response Code), for passing through identification
After label is to pay the fees, server issues a wireless control signal to portable power source, starts mobile electricity with the wireless control signal
Source exports electric energy in output interface 3 and charged to the mobile terminal of user.In addition, main control module 11 is intelligent protocol IC
(Integrated Circuit, integrated circuit), intelligent protocol IC compatibilities FCP (fast charge is thought in sea by Huawei), QC (Quick
Charge) 2.0, QC3.0, BC (Battery Charging Specification, battery Charging Specification) 1.2 scheme IC.Branch
Hold fast charge mode and normal charging mode while export.Multiple protection functions are realized by detecting circuit 14, it is anti-overcharge, prevent
Cross and put, anti-overvoltage, anti-overflow, anti-overpower, anti-short circuit, high temperature, which is closed, to be exported.
Charge-discharge circuit also includes intelligent identifying circuit, and it is arranged on the charging of output interface automatic decision digital electronic goods
Agreement, charged after shaking hands successfully with optimal voltage x current.Fast charge output voltage supports 3.6~12V outputs, and maximum current is supported
3A.Common output voltage is 5V, maximum current 2.4A.Output filter circuit is smooth output voltage current curve, is quickly filled
Electricity and common charging two-way, it is directly connected with multiplex roles output charging wire.
In the present embodiment, charge-discharge circuit, which also includes wireless internet of things circuit, includes WIFI chips, power supply unit and instruction
Unit.Power supply unit is connected with battery 4 and main control module 11, for for WIFI chip power supplies.
WIFI chips have COM1, status port and triggering port, COM1 and trigger port with master control mould
Block 11 connects, and WIFI chips receive valid wireless control signal and export trigger signal to main control module, communication from triggering port
Port is used for Rreceive output voltage x current data and electric quantity data wirelessly to upload, and status port is connected with indicating member, instruction
Unit is by working condition of the Automatic level control of status port to indicate.
User logs in APP by mobile terminal, and APP bottoms call mobile terminal camera identification 2 D code information.Collection two dimension
Code information success, and return and call equipment ID number.APP is established by http protocol and payment system and connected, and is returned after paying successfully
Order data is adjusted to trade company backstage, trade company successfully accepts an order data and establishes connection with platform of internet of things, and sends device id
Number, control time to platform of internet of things.Establish and connect with wireless internet of things circuit after platform of internet of things successful data reception, and turn
Hair start and control duration order.
Barcode scanning Quick Response Code is completed after paying, and wireless internet of things circuit receives payment successfully order (i.e. valid wireless control
Signal processed), WIFI Internet of Things module after main control module 11 receives this high level, is divided to a high level to main control module 11
Not Gei charge-discharge modules, detection circuit output control signal, realize output control.
Fig. 2 and Fig. 3 are referred to, charge-discharge modules 13 include voltage transformation unit 131, input block 132 and output unit 133.
The first end of voltage transformation unit 131 is connected with input block 132 and output unit 133, the second end of voltage transformation unit 131
It is connected with battery 4, voltage transformation unit 131 is controlled by main control module 11 so that the supply voltage for exporting input is carried out into voltage transformation.It is defeated
Enter unit 132 to be connected between input interface 2 and voltage transformation unit 131, controlled by main control module 11 to access the defeated of input interface 2
Enter voltage to voltage transformation unit 131, voltage transformation unit 131 will be that battery 4 charges after input voltage transformation.Output unit 133 is connected to
Between output interface 3 and voltage transformation unit 131, the output voltage for being controlled to export voltage transformation unit 131 by main control module 11 exports
To output interface 3.
Voltage transformation unit 131 includes first switch chip Q2, second switch chip Q70, the first diode D1, the second diode
D2 and the first inductor L1.
First PWM control terminals OUTL of first switch chip Q2 control termination main control module 11；First switch chip Q2
First termination first diode D1 negative electrode, input block 132 and output unit 133 of the input as voltage transformation unit 131, the
One switch chip Q2 the first inductor L1 of output termination first end and the first diode D1 anodes, the of the first inductor L1
Two ends are as the second of voltage transformation unit 131 positive pole for terminating battery 4；
2nd PWM control terminals OUTH of second switch chip Q70 control termination main control module 11；Second switch chip
Q70 input end grounding, second switch chip Q70 the first inductor L1 of output termination first end and the second diode D2 are cloudy
Pole, the second diode D2 plus earths.
Input block 132 includes first switch module 1321 and first switch control module 1322；First switch module
1321 input termination input interface 2, the first end of the output termination voltage transformation unit 131 of first switch module 1321, first opens
Close the control termination first switch control module 1322 of module 1321；First switch control module 1322 and input interface 2 and master
Control the control terminal DC-IN connections of module 11, the break-make of control first switch module 1321.
In the present embodiment, the drain electrode of first switch module 1321 including the first PMOS Q1, the first PMOS Q1, source electrode and
Grid respectively as the input, output end of first switch module 1321 and control terminal in other embodiments, or NMOS
Pipe.
First switch control module 1322 includes an a NPN type triode Q3 and voltage-stabiliser tube Z2, triode Q3 colelctor electrode
The control terminal of first switch module 1321, triode Q3 grounded emitter are connect, triode Q3 base stage passes through a current-limiting resistance
R4 meets the control terminal DC-IN of main control module 11, and connects voltage-stabiliser tube Z2 negative electrode, voltage-stabiliser tube Z2 plus earth.
Output unit 133 includes second switch module 1331 and second switch control module 1332；Second switch module
1331 output termination Micro USB interfaces 31 and TYPE-C interfaces 32, the input termination transformation list of second switch module 1331
The first end of member 131, the control termination second switch control module 1332 of second switch module 1331；Second switch control module
11 are connected with the control terminal OUT-CTL of main control module 11, the break-make of control second switch module 1331.
In the present embodiment, second switch module 1331 includes two PMOSs Q4, Q8 in parallel, the drain electrode of PMOS, source
Pole and grid respectively as the input, output end of second switch module 1331 and control terminal in other embodiments, or
NMOS tube.
Second switch control module 1332 includes a NPN type triode Q6, and triode Q6 colelctor electrode connects second switch mould
The control terminal of block 1331, triode Q6 grounded emitter, triode Q6 base stage connect main control module by a current-limiting resistance R14
11 control terminal OUT-CTL.
Further, charge-discharge modules 13 also include filtering energy-storage units 134, and filtering energy-storage units 134 include three filters
A ripple electric capacity C2, C3, C4 and storage capacitor E1, three filter capacitor C2, C3, C4 one end and storage capacitor E1 mono- terminate transformation list
The first end of member 131, three filter capacitor C2, C3, C4 other ends and storage capacitor E1 other ends ground connection.
Detection circuit 14 includes input detection unit 141, current detecting unit 142 and voltage detection unit 143.
Input detection unit 141 is connected with the second control terminal of input interface 2 and main control module 11, detects input interface 2
Input voltage be input to main control module 11, the fashionable main control module 11 of charging controls charge-discharge modules 13 to be operated in charging shape
State；Current detecting unit 142 is connected with output interface 3, and detection output current feeds back to main control module 11, the basis of main control module 11
The output current controls the break-make of output unit 133；Voltage detection unit 143 is connected with the second end of voltage transformation unit 131, detection
Input and output voltage feeds back to main control module 11, and main control module 11 is according to the input and output voltage control input unit 132 and defeated
Go out the break-make or regulation output voltage size of unit 133.
Specifically, input detection unit 141, current detecting unit 142 and voltage detection unit 143 are by potential-divider network structure
Into.Further, it is single using input detection after input block 132 is using the control terminal DC-IN control conductings of main control module 11
Member 141 provides control signal to first switch control module 1322, while the phase control end DC-IN of input detection unit 141 is provided
The measure voltage ＆ current signal of charging.Similarly, controlled in output unit 133 using the control terminal OUT-CTL of main control module 11
After conducting, control signal is provided using power supply of the input detection unit 141 to the electric discharge output of voltage transformation unit 131.
Above-mentioned charge-discharge circuit can adjust discharge voltage electric current by detecting charging/discharging voltage electric current and wait to fill to match
Electric equipment, simple, quick charge requirement can be met, there is provided optimal charging scheme, prevent because charge protocol mismatches, charging
Interface, which mismatches, causes charging rate to expire, and charging damage digital electronic goods, interface is unable to charging phenomenon.
Only described above is preferred embodiment of the present utility model, all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of charge-discharge circuit, it is connected with battery, input interface and output interface, it is characterised in that the charge-discharge circuit
Including main control module, charge-discharge modules and detection circuit, wherein：
The detection circuit is connected with input interface and output interface, detects the input voltage of the input interface, the charge and discharge
The voltage x current of electric module input and output；
The charge-discharge modules are connected with the battery, input interface and output interface, the main control module and input interface, defeated
Outgoing interface, charge-discharge modules and detection circuit connection；
The main control module controls the charge-discharge modules to fill input voltage transformation for the battery according to the input voltage
Electricity, the main control module export the cell output voltage transformation to described defeated always according to the voltage x current of the input and output
Outgoing interface.
2. charge-discharge circuit as claimed in claim 1, it is single that the charge-discharge modules include voltage transformation unit, input block and output
Member, wherein：
The first end of the voltage transformation unit is connected with the input block and output unit, and the second end is connected with the battery, institute
Voltage transformation unit is stated by the master control module controls so that the supply voltage for exporting input is carried out into voltage transformation；
The input block is connected between the input interface and the voltage transformation unit, by the master control module controls to access
The input voltage of the input interface is to the voltage transformation unit；
The output unit is connected between the output interface and the voltage transformation unit, by the master control module controls with by institute
The output voltage for stating voltage transformation unit output is output to the output interface.
3. charge-discharge circuit as claimed in claim 2, it is characterised in that the voltage transformation unit includes first switch chip, the
Two switch chips, the first diode, the second diode and the first inductor, wherein：
The control of the first switch chip terminates the first PWM control terminals of the main control module；The first switch chip
First termination first diode cathode, the input block and the output unit of the input as the voltage transformation unit, institute
The output for stating first switch chip terminates the first end of first inductor and first diode anode, first electricity
Positive pole of second end of sensor as the second termination battery of the voltage transformation unit；
The control of the second switch chip terminates the 2nd PWM control terminals of the main control module；The second switch chip
Input end grounding, the output of the second switch chip terminate the first end and second diode the moon of first inductor
Pole, the second diode anode ground connection.
4. charge-discharge circuit as claimed in claim 2, it is characterised in that the input block includes first switch module and the
One switch control module；The input of the first switch module terminates the input interface, the output of the first switch module
The first end of the voltage transformation unit is terminated, the control of the first switch module terminates the first switch control module；It is described
First switch control module is connected with the input interface and the main control module, controls the break-make of the first switch module.
5. charge-discharge circuit as claimed in claim 4, it is characterised in that the first switch module includes the first PMOS,
Drain electrode, source electrode and the grid of first PMOS are respectively as first switch module input, output end and the control terminal.
6. charge-discharge circuit as claimed in claim 2, it is characterised in that the output unit includes second switch module and the
Two switch control modules；The output of the second switch module terminates the output interface, the input of the second switch module
The first end of the voltage transformation unit is terminated, the control of the second switch module terminates the second switch control module；It is described
Second switch control module is connected with the 3rd control terminal of the main control module, controls the break-make of the second switch module.
7. charge-discharge circuit as claimed in claim 6, it is characterised in that the second switch module includes two in parallel the
Two PMOSs, drain electrode, source electrode and the grid of second PMOS respectively as the second switch module input, output end and
Control terminal.
8. the charge-discharge circuit as described in any one of claim 2 to 7, it is characterised in that the detection circuit includes input and examined
Unit, current detecting unit and voltage detection unit are surveyed, wherein：
The input detection unit is connected with the input interface and the main control module, and the input voltage for detecting input interface is defeated
Enter to the main control module, charge-discharge modules described in the fashionable master control module controls of charging are operated in charged state；
The current detecting unit is connected with the output interface, and detection output current feeds back to the main control module, the master
Control the break-make that module controls the output unit according to the output current；
The voltage detection unit is connected with the second end of the voltage transformation unit, and detection input and output voltage feeds back to the master control
Module, the main control module control break-make or the regulation of the input block and the output unit according to the input and output voltage
Output voltage size.
9. charge-discharge circuit as claimed in claim 8, it is characterised in that the input detection unit, current detecting unit and
Voltage detection unit is made up of potential-divider network.
10. a kind of portable power source, there is shell, the battery being contained within the shell and set input on the housing to connect
Mouth and output interface, it is characterised in that the charge-discharge circuit described in also including any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710114.4U CN206820519U (en) | 2017-06-16 | 2017-06-16 | A kind of charge-discharge circuit and portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710114.4U CN206820519U (en) | 2017-06-16 | 2017-06-16 | A kind of charge-discharge circuit and portable power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206820519U true CN206820519U (en) | 2017-12-29 |
Family
ID=60760800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720710114.4U Active CN206820519U (en) | 2017-06-16 | 2017-06-16 | A kind of charge-discharge circuit and portable power source |
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| Country | Link |
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| CN (1) | CN206820519U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790871A (en) * | 2018-05-30 | 2018-11-13 | 深圳市鑫悦购网络科技有限公司 | A kind of electric vehicle charging equipment |
| CN111416414A (en) * | 2020-04-22 | 2020-07-14 | 上海移远通信技术股份有限公司 | Charging and discharging control system and charging and discharging control circuit of super capacitor |
-
2017
- 2017-06-16 CN CN201720710114.4U patent/CN206820519U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790871A (en) * | 2018-05-30 | 2018-11-13 | 深圳市鑫悦购网络科技有限公司 | A kind of electric vehicle charging equipment |
| CN108790871B (en) * | 2018-05-30 | 2024-04-12 | 深圳市鑫悦购网络科技有限公司 | Charging equipment for electric vehicle |
| CN111416414A (en) * | 2020-04-22 | 2020-07-14 | 上海移远通信技术股份有限公司 | Charging and discharging control system and charging and discharging control circuit of super capacitor |
| CN111416414B (en) * | 2020-04-22 | 2021-09-21 | 上海移远通信技术股份有限公司 | Charging and discharging control system and charging and discharging control circuit of super capacitor |
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Address after: 518000 707, block B, building 1, Huaide Plaza, Fuyong street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Dudu Sharing Technology Co.,Ltd. Address before: 518000 707, block B, building 1, Huaide Plaza, Fuyong street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN YIBAITE SOFTWARE CO.,LTD. |