CN208638087U - Solar charging circuit - Google Patents
Solar charging circuit Download PDFInfo
- Publication number
- CN208638087U CN208638087U CN201821226636.8U CN201821226636U CN208638087U CN 208638087 U CN208638087 U CN 208638087U CN 201821226636 U CN201821226636 U CN 201821226636U CN 208638087 U CN208638087 U CN 208638087U
- Authority
- CN
- China
- Prior art keywords
- switching tube
- connect
- optocoupler
- battery
- solar energy
- 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.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses solar charging circuits, including inductance L1, capacitor C2, switching tube Q1, switching tube Q2, inductance L1 is connected between solar energy positive input terminal S+ and battery positive voltage B+, the both ends of capacitor C2 are connected to the both ends of battery positive voltage B+ and battery terminal negative B-, switching tube Q1 and switching tube Q2 differential concatenation are between solar energy negative input end S- and battery terminal negative B-, the controlled end of the switching tube Q1 and switching tube Q2 is correspondingly connected with the first drive module and the second drive module, first drive module and the second drive module are connect with the respective end of control module respectively.The advantages of utility model is: switching tube Q2 plays the role of anti-reverse charging in the utility model, and switching tube Q1 and switching tube Q2 use the mode of isolation drive to drive, and prevents the high pressure damage control module of driving in this way.
Description
Technical field
The utility model relates to solar charging electrical domains, especially solar charging circuit.
Background technique
Existing solar controller technology mainly uses during solar battery is to battery charge protection
Switching tube, by the on-off of the control circuit control switch pipe in controller.It is high by single chip machine controlling circuit control switch pipe
A possibility that conducting of frequency turns off, and which increase switching tube damages, after switching tube damage, switching tube is constantly in conducting shape
State, and battery electricity fills at this time, and solar controller cannot control solar battery and discharge extra energy, from
And a possibility that increasing battery damage.A possibility that battery capacity is excessive, and there is also reverse charges.
Utility model content
In order to overcome the shortcomings of the prior art described above, for this purpose, the utility model provides solar charging circuit.
To achieve the above object, the utility model uses following technical scheme:
Solar charging circuit, including inductance L1, capacitor C2, switching tube Q1, switching tube Q2, inductance L1 are connected on solar energy
Between positive input terminal S+ and battery positive voltage B+, the both ends of capacitor C2 are connected to battery positive voltage B+ and battery terminal negative B-
Both ends, switching tube Q1 and switching tube Q2 differential concatenation are described to open between solar energy negative input end S- and battery terminal negative B-
The controlled end for closing pipe Q1 and switching tube Q2 is correspondingly connected with the first drive module and the second drive module, first drive module
It is connect respectively with the respective end of control module with the second drive module.
Optimization, switching tube Q1 and switching tube Q2 are field-effect tube, and first drive module includes resistance R1, optocoupler
T1, power supply are connect by resistance R1 with the input terminal of the driving portion of optocoupler T1, the output end NET1 of optocoupler T1 and control module
The connection of one control terminal, solar energy positive input terminal S+ are connect by resistance R2 with the input terminal in the controlled portion optocoupler T1, and optocoupler T1 is controlled
The output end in portion is connect with the grid of switching tube Q1, and is connect by zener diode D3 with solar energy negative input end S-；
Second drive module includes resistance R3, optocoupler T2, and power supply is defeated by resistance R3 and the driving portion of optocoupler T2
Enter end connection, the output end NET2 of optocoupler T2 and another control terminal of control module connect, and solar energy positive input terminal S+ is by electricity
Resistance R4 is connect with the input terminal in the controlled portion optocoupler T2, and the output end in the controlled portion optocoupler T2 is connect with the grid of switching tube Q2, and
It is connected by zener diode D3 and switching tube Q2 drain electrode；
Switching tube Q2 drain electrode is connect with battery terminal negative, and source electrode is connect with the source electrode of switching tube Q1, the drain electrode of switching tube Q1
It is connect with the negative input end of solar energy.
Optimization, the power supply is 5V.
Optimization, circuit further includes diode D1, diode D2, capacitor C1, and the diode D1 connects company with inductance L1
Connect between solar energy positive input terminal S+ and battery positive voltage B+, the output end of diode D1 is connect with inductance L1, capacitor C1 and
It is connected between diode D1 and inductance L1 tie point and the drain electrode of switching tube Q2 after diode D2 is in parallel.
Optimization, circuit further includes fuse F, and fuse F is connected to battery terminal negative B- and solar energy negative input end S-
Major loop on.
Utility model has the advantages that
(1) the utility model is improved BUCK circuit, is charged a battery for solar panel.
(2) switching tube Q2 plays the role of anti-reverse charging in the utility model, and switching tube Q1 and switching tube Q2 are used
The mode of isolation drive drives, and prevents the high pressure damage control module of driving in this way.
(3) switching tube Q1 is nonconducting state when optocoupler T1 is connected, and such optocoupler T1 can be also used for release solar energy
The extra energy of battery.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model solar charging circuit.
Fig. 2 is the circuit diagram of the second drive module of solar charging circuit in the utility model.
Specific embodiment
As shown in Figs. 1-2, solar charging circuit, including inductance L1, capacitor C2, switching tube Q1, switching tube Q2, diode
D1, diode D2, capacitor C1, fuse F, inductance L1 are connected between solar energy positive input terminal S+ and battery positive voltage B+, electricity
The both ends for holding C2 are connected to the both ends of battery positive voltage B+ and battery terminal negative B-, and switching tube Q1 and switching tube Q2 reversely go here and there
It is associated between solar energy negative input end S- and battery terminal negative B-, the controlled end and first of the switching tube Q1 and switching tube Q2 drive
Dynamic model block and the second drive module are correspondingly connected with, first drive module and the second drive module respectively with the phase of control module
Connection should be held.
Switching tube Q1 and switching tube Q2 is field-effect tube, and first drive module includes resistance R1, optocoupler T1, power supply warp
It crosses resistance R1 to connect with the input terminal of the driving portion of optocoupler T1, the output end NET1 of optocoupler T1 and a control terminal of control module connect
It connects, solar energy positive input terminal S+ is connect by resistance R2 with the input terminal in the controlled portion optocoupler T1, the output end in the controlled portion optocoupler T1
It connect with the grid of switching tube Q1, and is connect by zener diode D3 with solar energy negative input end S-；
Second drive module includes resistance R3, optocoupler T2, and power supply is defeated by resistance R3 and the driving portion of optocoupler T2
Enter end connection, the output end NET2 of optocoupler T2 and another control terminal of control module connect, and solar energy positive input terminal S+ is by electricity
Resistance R4 is connect with the input terminal in the controlled portion optocoupler T2, and the output end in the controlled portion optocoupler T2 is connect with the grid of switching tube Q2, and
It is connected by zener diode D3 and switching tube Q2 drain electrode；
Switching tube Q2 drain electrode is connect with battery terminal negative, and source electrode is connect with the source electrode of switching tube Q1, the drain electrode of switching tube Q1
It is connect with the negative input end of solar energy.
The power supply is 5V.
The diode D1 and inductance L1 are connected in series between solar energy positive input terminal S+ and battery positive voltage B+, two poles
The output end of pipe D1 is connect with inductance L1, capacitor C1 and diode D2 it is in parallel after be connected to diode D1 and inductance L1 tie point with
Between the drain electrode of switching tube Q2.
Fuse F is connected on the major loop of battery terminal negative B- and solar energy negative input end S-.
When the voltage of battery is lower than charge protection electrical voltage point, switching tube Q1 is in the conductive state, and optocoupler T1 is to disconnect
State, solar battery electric current is charged a battery by switching tube Q1 and switching tube Q2 at this time, when the voltage of battery reaches
When charge protection electrical voltage point, switching tube Q1 is in high-frequency on-off and exchanges state, that is, carries out the charge protection of PWM formula,
At this point, optocoupler T1 is in an off state.It is constantly on state when switching tube Q1 is damaged for some reason, and battery
Voltage has reached charge protection electrical voltage point again when, the state of control module control switch pipe Q2 is to realize battery charger
Shield.
The above is only the preferred embodiments that the utility model is created, and are not intended to limit the utility model creation, all
Made any modifications, equivalent replacements, and improvements etc., should be included in this within the spirit and principle that the utility model is created
Within the protection scope that utility model is created.
Claims (5)
1. solar charging circuit, which is characterized in that including inductance L1, capacitor C2, switching tube Q1, switching tube Q2, inductance L1 string
It is associated between solar energy positive input terminal S+ and battery positive voltage B+, the both ends of capacitor C2 are connected to battery positive voltage B+ and storage
The both ends of battery cathode B-, switching tube Q1 and switching tube Q2 differential concatenation solar energy negative input end S- and battery terminal negative B- it
Between, controlled end and the first drive module and the second drive module of the switching tube Q1 and switching tube Q2 are correspondingly connected with, and described
One drive module and the second drive module are connect with the respective end of control module respectively.
2. solar charging circuit according to claim 1, which is characterized in that switching tube Q1 and switching tube Q2 is field-effect
Pipe, first drive module include resistance R1, optocoupler T1, and power supply connects by the input terminal of the driving portion of resistance R1 and optocoupler T1
It connects, the output end NET1 of optocoupler T1 and a control terminal of control module connect, and solar energy positive input terminal S+ passes through resistance R2 and light
The input terminal in the controlled portion coupling T1 connects, and the output end in the controlled portion optocoupler T1 is connect with the grid of switching tube Q1, and passes through pressure stabilizing
Diode D3 is connect with solar energy negative input end S-；
Second drive module includes resistance R3, optocoupler T2, and power supply passes through the input terminal of the driving portion of resistance R3 and optocoupler T2
Connection, the output end NET2 of optocoupler T2 and another control terminal of control module connect, and solar energy positive input terminal S+ passes through resistance R4
It is connect with the input terminal in the controlled portion optocoupler T2, the output end in the controlled portion optocoupler T2 is connect with the grid of switching tube Q2, and is passed through
Zener diode D3 and switching tube Q2 drain electrode connects；
Switching tube Q2 drain electrode is connect with battery terminal negative, and source electrode is connect with the source electrode of switching tube Q1, the drain electrode of switching tube Q1 and too
The negative input end connection of positive energy.
3. solar charging circuit according to claim 2, which is characterized in that the power supply is 5V.
4. solar charging circuit according to claim 2, which is characterized in that circuit further includes diode D1, diode
D2, capacitor C1, the diode D1 and inductance L1 are connected in series between solar energy positive input terminal S+ and battery positive voltage B+, and two
The output end of pole pipe D1 is connect with inductance L1, is connected to diode D1 and inductance L1 tie point after capacitor C1 and diode D2 parallel connection
Between drain electrode with switching tube Q2.
5. solar charging circuit according to claim 4, which is characterized in that circuit further includes fuse F, fuse F
It is connected on the major loop of battery terminal negative B- and solar energy negative input end S-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226636.8U CN208638087U (en) | 2018-08-01 | 2018-08-01 | Solar charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226636.8U CN208638087U (en) | 2018-08-01 | 2018-08-01 | Solar charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208638087U true CN208638087U (en) | 2019-03-22 |
Family
ID=65741147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821226636.8U Expired - Fee Related CN208638087U (en) | 2018-08-01 | 2018-08-01 | Solar charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208638087U (en) |
-
2018
- 2018-08-01 CN CN201821226636.8U patent/CN208638087U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 Termination date: 20210801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |