CN108551204A - Solar charging electric control circuit, charge control method and its solar communications terminal - Google Patents
Solar charging electric control circuit, charge control method and its solar communications terminal Download PDFInfo
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- CN108551204A CN108551204A CN201810643996.6A CN201810643996A CN108551204A CN 108551204 A CN108551204 A CN 108551204A CN 201810643996 A CN201810643996 A CN 201810643996A CN 108551204 A CN108551204 A CN 108551204A
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- 238000007600 charging Methods 0.000 title claims abstract description 117
- 238000004891 communication Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 230000004224 protection Effects 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 description 1
- 241001274660 Modulus Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 102100021298 b(0,+)-type amino acid transporter 1 Human genes 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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Classifications
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
-
- H02J7/0088—
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of solar charging electric control circuits, including DC/DC conversion modules, temperature humidity sensor module, controller module, temperature adjustment module, charging current adjustment module and charging voltage adjustment module；Solar panels convert the solar into electric energy, carry out charging to accumulator by DC/DC conversion modules, charging current adjustment module or externally provide electric energy；Temperature humidity sensor module detects temperature and humidity information and uploads controller module；Controller module adjusts the output voltage signal of DC/DC conversion modules by charging voltage adjustment module, while controlling the temperature that temperature adjustment module changes battery-operated environment.The invention discloses the charge control methods of the solar charging electric control circuit, and the solar communications terminal including the solar charging electric control circuit and its charge control method.The present invention can adjust the charging voltage and operating ambient temperature of accumulator in real time, ensure the working performance and reliability of accumulator.
Description
Technical field
Present invention relates particularly to a kind of solar charging electric control circuit, charge control method and its solar communications terminals.
Background technology
With the development and the improvement of people's living standards of economic technology, electric energy has become in people's production and life
Essential secondary energy sources bring endless facility to the production and life of people.Electric system is in automatic running, certainly
Dynamicization power failure positioning system is capable of automatic identification and positions the failure on lower road, therefore automatic power fault location system
The important leverage of electric system automated intelligent operation.
Automatic power fault location system includes mainly fault detector, communication terminal and main website, and fault detector is adopted
Fault message simultaneously can be uploaded to communication terminal by collection circuit characteristic signal by Local wireless network, and communication terminal does finishing analysis
Fault message real-time report to main website is carried out by fault identification, positioning by 4G networks after processing.Therefore, communication terminal is certainly
Carry the important function of signal centre in dynamicization power failure positioning system, the reliable and stable operation of communication terminal is automation
One of the important prerequisite of the reliable and stable operation of power failure positioning system.
Currently, the extensive use of solar communications terminal.In solar communications terminal, solar panels receive sunlight simultaneously
Electric energy is converted to, rechargeable electrical energy is then converted to charge the battery by power conversion module.In the situation of solar energy abundance
Under, communication terminal is using solar energy as power supply, and insufficient in solar energy, communication terminal is using accumulator as electricity
Source.
But the solar energy of nature is extremely unstable, cause solar panel output current and voltage signal pole not
Stablize, the voltage and current so as to cause power conversion module output is relatively unstable, and unfavorable shadow is brought to the performance of accumulator
It rings；Simultaneously as the working performance of accumulator and the environment temperature of accumulator are closely bound up, and existing solar communications terminal
Not to the working environment of accumulator make it is any consider, to further affect the working performance of accumulator.
Invention content
One of the objects of the present invention is to provide it is a kind of can be to the charging voltage and battery-operated environment temperature of accumulator
Spend the solar charging electric control circuit adjusted in real time.
The second object of the present invention is to provide a kind of charge control method of the solar charging electric control circuit.
The third object of the present invention is that it includes the solar charging electric control circuit and charge control method to provide a kind of
Solar communications terminal.
This solar charging electric control circuit provided by the invention, including DC/DC conversion modules, further include temperature and humidity sensing
Device module, controller module, temperature adjustment module, charging current adjustment module and charging voltage adjustment module；Solar panels,
DC/DC conversion modules, charging current adjustment module and accumulator are sequentially connected in series；Temperature humidity sensor module, controller module and
Temperature adjustment module is sequentially connected in series；Controller module also connects DC/DC conversion modules by charging voltage adjustment module；Solar energy
Plate converts the solar into electric energy, is converted to stable DC energy by DC/DC conversion modules, then pass through charging current tune
Section module carries out charging or externally providing electric energy to accumulator after charging current is adjusted；Temperature humidity sensor module is for examining
It surveys the temperature and humidity information of battery-operated environment and uploads controller module；Controller module is according to the temperature of upload and wet
Information is spent, the voltage signal that first control signal adjusts the output of DC/DC conversion modules by charging voltage adjustment module is sent out,
It is simultaneously emitted by second control signal control temperature adjustment module work, to change the temperature of battery-operated environment.
The solar charging electric control circuit further includes remote communication module；Remote communication module connects with controller module
It connects, for externally sending the running parameter of the solar charging electric control circuit.
The solar charging electric control circuit further includes input protection module；Input protection module is serially connected in solar panels
Between DC/DC conversion modules, the electric power signal for solar panels to be output to DC/DC conversion modules is protected, to
Ensure the safe and reliable operation of DC/DC conversion modules.
The input protection module is to be protected by the input that thermistor, electrostatic protection diode and filter capacitor are constituted
Module.
The DC/DC conversion modules are the DC/DC moduluss of conversion being made of the DC/DC conversion chips of model MIC4576
Block.
The temperature adjustment module includes heater and exhaust fan；Heater is connect with controller module, in ring
The temperature of environment where border temperature opens when being less than set temperature and heats accumulator；Exhaust fan is connect with controller module, is used
In being opened when environment temperature is higher than set temperature and the heat in environment temperature being discharged, to reduce environment where accumulator
Temperature.
The charging current adjustment module includes charging current regulation resistance, charging current current-limiting resistance and charging current
Adjust triode；Charging signals are exported after the output end concatenation charging current regulation resistance of DC/DC conversion modules to fill to accumulator
Electricity or supplying power for outside；Charging signals connect the base that charging current adjusts triode by the charging current current-limiting resistance of concatenation
Grade, charging current adjust the output end of the emitter connection DC/DC conversion modules of triode, and charging current adjusts the collection of triode
Electrode is then directly connected to the feedback signal terminal of DC/DC conversion modules.
The charging voltage adjustment module includes bleeder circuit and voltage follower, the analog output of controller module
Port output voltage analog signals are simultaneously grounded by the bleeder circuit of concatenation；The output end of bleeder circuit be directly connected to voltage with
With the input terminal of device, the feedback signal terminal of the output end connection DC/DC conversion modules of voltage follower.
The present invention also provides a kind of charge control methods of the solar charging electric control circuit, include the following steps：
S1. solar panels receive solar energy and are converted to electric energy；
S2. the electric energy of solar panels output is storage battery power supply by DC/DC conversion modules and charging current adjustment module
And externally provide electric energy；
S3. temperature humidity sensor module detects the temperature and humidity information of the working environment of accumulator and uploads controller mould
Block；
S4. controller module is according to the temperature and humidity information of upload, the work of control temperature adjustment module adjusting accumulator
Make the temperature of environment；
S5. controller module is according to the temperature and humidity information of upload, control charging voltage adjustment module adjusting accumulator
Charging voltage.
The invention also discloses a kind of solar communications terminal, which includes the solar charging
Electric control circuit and charge control method.
This solar charging electric control circuit and charge control method provided by the invention, are examined by Temperature and Humidity module
Ambient temperature and humidity information is surveyed, accumulator is then adjusted by VRM Voltage Regulator Module, current regulating module and temperature adjustment module
Charging voltage, charging current and operating ambient temperature, therefore the present invention can be to the charging voltage and battery-operated of accumulator
Environment temperature is adjusted in real time, ensures the working performance of accumulator, further to ensure to improve the reliability of accumulator
The working performance of solar communications terminal.
Description of the drawings
Fig. 1 is the functional block diagram of the solar charging electric control circuit of the present invention.
Fig. 2 is input protection module, DC/DC conversion modules, the charging current of the solar charging electric control circuit of the present invention
The circuit theory schematic diagram of adjustment module and charging voltage adjustment module.
Fig. 3 is the method flow diagram of the charge control method of the present invention.
Specific implementation mode
It is as shown in Figure 1 the functional block diagram of the solar charging electric control circuit of the present invention：It is provided by the invention it is this too
It is positive can charging control circuit, including DC/DC conversion modules, temperature humidity sensor module, controller module, temperature adjustment module,
Charging current adjustment module, charging voltage adjustment module, remote communication module and input protection module；Solar panels, input are protected
Shield module, DC/DC conversion modules, charging current adjustment module and accumulator are sequentially connected in series；Temperature humidity sensor module, controller
Module and temperature adjustment module are sequentially connected in series；Controller module also connects DC/DC conversion modules by charging voltage adjustment module；
Remote communication module is connect with controller module；Solar panels convert the solar into electric energy, by input protection module and
DC/DC conversion modules are converted to stable DC energy, then by charging current adjustment module be adjusted after charging current to
Accumulator carries out charging or externally providing electric energy；Temperature humidity sensor module is used to detect the temperature of battery-operated environment and wet
Degree information simultaneously uploads controller module；It is logical to send out first control signal according to the temperature and humidity information of upload for controller module
Overcharge voltage adjustment module adjusts the voltage signal of the output of DC/DC conversion modules, is simultaneously emitted by second control signal control
Temperature adjustment module works, to change the temperature of battery-operated environment；Remote communication module is used for the solar charging
The running parameter of electric control circuit is externally sent；Input protection module to solar panels for being output to DC/DC conversion modules
Electric power signal is protected, to ensure the safe and reliable operation of DC/DC conversion modules.
It is illustrated in figure 2 the input protection module of the solar charging electric control circuit of the present invention, DC/DC conversion modules, fills
The circuit theory schematic diagram of electric current regulating module and charging voltage adjustment module：In figure, VSUN is the electricity of solar panels output
Energy signal, RV1 is thermistor, and V1 is Zener diode, and capacitance C1 and C2 are both used as filter capacitor, and RV1, V1 and C1, C2 are total
It is same to constitute input protection circuit；D1, V2, L1, C3 and R2, R3, R6 together constitute DC/DC conversion modules, and wherein D1 is type
Number be MIC4576 DC/DC conversion chips, V2 is avalanche diode, capacitance C3 is output filter capacitor, and L1 is filter inductance,
Resistance R2, R4 and R6 constitute output sample circuit；Charging current adjustment module includes charging current regulation resistance R1, charging current
After current-limiting resistance R3 and charging current adjust the output end concatenation charging current regulation resistance of triode V3, DC/DC conversion module
Output charging signals charge a battery or supplying power for outside；Charging signals are filled by the charging current current-limiting resistance connection of concatenation
The ground level of electric current regulation triode, charging current adjust the output end of the emitter connection DC/DC conversion modules of triode, fill
The collector of electric current regulation triode is then directly connected to the feedback signal terminal of DC/DC conversion modules；Charging voltage adjustment module
Including bleeder circuit (R5 and R7) and voltage follower (U1), the analog output port Analog output electricity of controller module
It presses analog signals and is grounded by the bleeder circuit of concatenation；The output end of bleeder circuit is directly connected to the input of voltage follower
End, the output end of voltage follower connect the feedback signal terminal of DC/DC conversion modules by exporting sample circuit；Diode V4
For protection diode, F1 is insurance；VBAT is final supplying power for outside signal, while being also battery BAT1 chargings.
The course of work of foregoing circuit is：The electric energy of solar panels output is ESD after RV1 Thermal protections by V1
Protection is input to 1 foot of D1 after then being filtered by capacitance C1 and C2；1 foot of D1 chips is power input pin and directly connects
Connect the electric power signal of solar panels output；5 feet of chip are on/off pin, and are directly grounded；3 feet and 6 feet of chip
It is ground signalling pin, and is all directly grounded；2 feet of chip are output signal pin, DC power output；DC/DC turns
The direct current energy of mold changing block output is protected by avalanche diode V2, at the same by filter inductance L1 filtering after, by adopting
Sample resistance (R2, R4 and R6) exports the sampled signal of output voltage all the way to 4 feet (feedback pin) of chip D1, to stablize
The output voltage of chip D1；It is defeated by resistance R1 and protection circuit (V4 and F1) by the filtered power supply signals of inductance L1
Go out final electric energy VBAT；When the supply current (electric current for flowing through resistance R1) that VBAT is provided rises, the electricity on resistance R1
Pressure will rise, and emitter-base voltage on triode V3 will rise the cut-in voltage up to reaching V3 at this time, at this time V3
It is operated in amplification region, it is in parallel with resistance R1 again after resistance R3 connects with emitter-base resistance of triode at this time, to pass through
Change equiva lent impedance (equiva lent impedance of series resistor on the outlet line of DC/DC conversion modules) to adjust DC/DC conversion modules
Output current value；Meanwhile when the operating ambient temperature where accumulator is too low, the analog output of controller circuitry at this time
Port Analog exports the voltage signal of analog quantity all the way, is arrived by exporting voltage signal all the way after resistance R5 and R7 partial pressure
Voltage follower so that the voltage of 1 foot of output end of voltage follower is raised, what the feedback pin 4 to raise D1 chips was handed over
Voltage signal values, to realize the electrodeless adjustment of charging voltage.
It is illustrated in figure 3 the method flow diagram of the charge control method of the present invention：This sun provided by the invention
The charge control method of energy charging control circuit, includes the following steps：
S1. solar panels receive solar energy and are converted to electric energy；
S2. the electric energy of solar panels output is storage battery power supply by DC/DC conversion modules and charging current adjustment module
And externally provide electric energy；
S3. temperature humidity sensor module detects the temperature and humidity information of the working environment of accumulator and uploads controller mould
Block；
S4. controller module is according to the temperature and humidity information of upload, the work of control temperature adjustment module adjusting accumulator
Make the temperature of environment；
S5. controller module is according to the temperature and humidity information of upload, control charging voltage adjustment module adjusting accumulator
Charging voltage.
This solar charging electric control circuit and charge control method provided by the present application, can be used for other it is any required into
The electronic equipment of row solar charging electric control, including all types of measuring instruments (such as electric energy meter, water meter, gas meter, flow meter, calorimeter
Deng), electric energy management terminal, distribution terminal, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator, number
According to collector, measuring instrument, write by hand device, fault detector etc..
Claims (10)
1. a kind of solar charging electric control circuit, including DC/DC conversion modules, it is characterised in that further include Temperature Humidity Sensor mould
Block, controller module, temperature adjustment module, charging current adjustment module and charging voltage adjustment module；Solar panels, DC/DC
Conversion module, charging current adjustment module and accumulator are sequentially connected in series；Temperature humidity sensor module, controller module and temperature tune
Section module is sequentially connected in series；Controller module also connects DC/DC conversion modules by charging voltage adjustment module；Solar panels will too
Sun can be converted to electric energy, and stable DC energy is converted to by DC/DC conversion modules, then by charging current adjustment module into
Row carries out charging or externally providing electric energy to accumulator after adjusting charging current；Temperature humidity sensor module is for detecting accumulator
The temperature and humidity information of working environment simultaneously uploads controller module；Controller module according to the temperature and humidity information of upload,
The voltage signal that first control signal adjusts the output of DC/DC conversion modules by charging voltage adjustment module is sent out, is sent out simultaneously
Go out second control signal control temperature adjustment module work, to change the temperature of battery-operated environment.
2. solar charging electric control circuit according to claim 1, it is characterised in that further include remote communication module；Remotely
Communication module is connect with controller module, for externally sending the running parameter of the solar charging electric control circuit.
3. solar charging electric control circuit according to claim 1, it is characterised in that the solar charging electric control electricity
Road further includes input protection module；Input protection module is serially connected between solar panels and DC/DC conversion modules, for the sun
The electric power signal that energy plate is output to DC/DC conversion modules is protected, to ensure the safe and reliable fortune of DC/DC conversion modules
Row.
4. solar charging electric control circuit according to claim 1, it is characterised in that the input protection module is served as reasons
The input protection module that thermistor, electrostatic protection diode and filter capacitor are constituted.
5. solar charging electric control circuit according to claim 1, it is characterised in that the DC/DC conversion modules are served as reasons
The DC/DC conversion modules that the DC/DC conversion chips of model MIC4576 are constituted.
6. solar charging electric control circuit according to claim 1, it is characterised in that the temperature adjustment module includes
Heater and exhaust fan；Heater is connect with controller module, for opening and heating when environment temperature is less than set temperature
The temperature of environment where accumulator；Exhaust fan is connect with controller module, for being opened when environment temperature is higher than set temperature
And the heat in environment temperature is discharged, to reduce the temperature of accumulator place environment.
7. the solar charging electric control circuit according to one of claim 1~6, it is characterised in that the charging current tune
Section module includes that charging current regulation resistance, charging current current-limiting resistance and charging current adjust triode；DC/DC conversion modules
Output end concatenation charging current regulation resistance after output charging signals charge a battery or supplying power for outside；Charging signals are logical
The charging current current-limiting resistance connection charging current for crossing concatenation adjusts the ground level of triode, and charging current adjusts the transmitting of triode
Pole connects the output end of DC/DC conversion modules, and the collector that charging current adjusts triode is then directly connected to DC/DC conversion modules
Feedback signal terminal.
8. the solar charging electric control circuit according to one of claim 1~6, it is characterised in that the charging voltage tune
It includes bleeder circuit and voltage follower to save module, and the analog output port output voltage analog signals of controller module are simultaneously
It is grounded by the bleeder circuit of concatenation；The output end of bleeder circuit is directly connected to the input terminal of voltage follower, voltage follower
Output end connection DC/DC conversion modules feedback signal terminal.
9. the charge control method of the solar charging electric control circuit described in a kind of one of claim 1~8, including walk as follows
Suddenly：
S1. solar panels receive solar energy and are converted to electric energy；
S2. the electric energy of solar panels output by DC/DC conversion modules and charging current adjustment module is storage battery power supply and right
Outer offer electric energy；
S3. temperature humidity sensor module detects the temperature and humidity information of the working environment of accumulator and uploads controller module；
S4. controller module is according to the temperature and humidity information of upload, the building ring of control temperature adjustment module adjusting accumulator
The temperature in border；
S5. controller module controls charging voltage adjustment module and adjusts filling for accumulator according to the temperature and humidity information of upload
Piezoelectric voltage.
10. a kind of solar communications terminal, it is characterised in that including the solar charging electric control described in one of claim 1~8
Charge control method described in circuit and claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643996.6A CN108551204A (en) | 2018-06-21 | 2018-06-21 | Solar charging electric control circuit, charge control method and its solar communications terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643996.6A CN108551204A (en) | 2018-06-21 | 2018-06-21 | Solar charging electric control circuit, charge control method and its solar communications terminal |
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| Publication Number | Publication Date |
|---|---|
| CN108551204A true CN108551204A (en) | 2018-09-18 |
Family
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|---|---|---|---|
| CN201810643996.6A Pending CN108551204A (en) | 2018-06-21 | 2018-06-21 | Solar charging electric control circuit, charge control method and its solar communications terminal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698546A (en) * | 2018-12-17 | 2019-04-30 | 漳州市华威电源科技有限公司 | A kind of solar charging electric control circuit |
| CN111224436A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Multi-battery pack pulse equalization charging method, storage medium and charging device thereof |
| CN111469710A (en) * | 2020-04-02 | 2020-07-31 | 雷锡社 | Battery management system and method |
| CN114069776A (en) * | 2021-10-28 | 2022-02-18 | 许继电源有限公司 | Solar charging control device, system and control method |
| CN114132203A (en) * | 2020-09-04 | 2022-03-04 | 南京国电南思科技发展股份有限公司 | Fill electric pile control system based on humiture intelligent regulation |
| CN116872733A (en) * | 2023-06-16 | 2023-10-13 | 深圳市华芯控股有限公司 | Integrated whole vehicle control system of low-speed electric vehicle and control method thereof |
| CN117614084A (en) * | 2024-01-22 | 2024-02-27 | 浙江水文新技术开发经营有限公司 | Solar integrated data acquisition device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224436A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Multi-battery pack pulse equalization charging method, storage medium and charging device thereof |
| CN109698546A (en) * | 2018-12-17 | 2019-04-30 | 漳州市华威电源科技有限公司 | A kind of solar charging electric control circuit |
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| CN114132203A (en) * | 2020-09-04 | 2022-03-04 | 南京国电南思科技发展股份有限公司 | Fill electric pile control system based on humiture intelligent regulation |
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| CN114069776A (en) * | 2021-10-28 | 2022-02-18 | 许继电源有限公司 | Solar charging control device, system and control method |
| CN116872733A (en) * | 2023-06-16 | 2023-10-13 | 深圳市华芯控股有限公司 | Integrated whole vehicle control system of low-speed electric vehicle and control method thereof |
| CN116872733B (en) * | 2023-06-16 | 2024-01-30 | 深圳市华芯控股有限公司 | Integrated whole vehicle control system of low-speed electric vehicle and control method thereof |
| CN117614084A (en) * | 2024-01-22 | 2024-02-27 | 浙江水文新技术开发经营有限公司 | Solar integrated data acquisition device |
| CN117614084B (en) * | 2024-01-22 | 2024-04-09 | 浙江水文新技术开发经营有限公司 | Solar integrated data acquisition device |
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