CN201450355U - Core protection circuit of solar battery - Google Patents
Core protection circuit of solar battery Download PDFInfo
- Publication number
- CN201450355U CN201450355U CN2009200591222U CN200920059122U CN201450355U CN 201450355 U CN201450355 U CN 201450355U CN 2009200591222 U CN2009200591222 U CN 2009200591222U CN 200920059122 U CN200920059122 U CN 200920059122U CN 201450355 U CN201450355 U CN 201450355U
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- resistance
- solar cell
- triode
- storage battery
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a core protection circuit of a solar battery, which comprises the solar battery, an accumulator battery connected with the solar battery in parallel, a rectifying diode connected between the positive electrode of the solar battery and the positive electrode of the accumulator battery, a load circuit connected with the accumulator battery in parallel, and a switch connected with the positive electrode of the load circuit in series. An over discharge protection circuit is also connected with the circuit formed by the accumulator battery and the load circuit; the over discharge protection circuit comprises a resistor a, a resistor b, a resistor c and a constant-voltage conversion ICa; an over charge protection circuit is also connected between the accumulator battery and the solar battery in parallel; the over charge protection circuit comprises a resistor g, a resistor h, a constant-voltage conversion ICb and a resistor i. The core protection circuit of the solar battery has high-voltage over charge protection function and low-voltage over discharge protection function.
Description
Technical field
The utility model relates to a kind of protective circuit, particularly a kind of solar cell core protective circuit.
Background technology
Present solar cell; the current/voltage that produces when being subjected to illumination can store the storage battery the inside into; when using discharge; because circuit constantly discharges; so electric current will have been put over time, like this, storage battery just is not effectively protected; when battery tension is put into certain value when following, storage battery just is easy to damage and the lost of life.Equally, when making solar cell be subjected to illumination to be charge in batteries, after cell voltage is full of, when surpassing certain voltage value, will fill storage battery bad as early as possible.Because in the present solar battery product, circuit does not have the defencive function of high-voltage value and low voltage value, therefore, is necessary to make improvements.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provide a kind of simple in structure, had a solar cell core protective circuit of putting with the over-charge protective function.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of solar cell core protective circuit, comprise solar cell, the storage battery in parallel with solar cell, be connected in the rectifier diode between the positive pole of the positive pole of solar cell and storage battery, with storage battery load in parallel circuit and the switch that is series at the load circuit positive pole, in the loop of storage battery and load circuit and switch formation, also be connected with over-discharge protection circuit, between storage battery and solar cell, also be parallel with overcharge protection circuit, described over-discharge protection circuit comprises the resistance a and the resistance b of series connection, be connected with a level pressure conversion IC a between resistance a and the resistance b, described level pressure conversion IC a connects the base stage of resistance c and triode a, the emitter of triode a connects resistance d, the collector electrode of triode a connects resistance e and the base stage of triode b and the negative pole of load circuit, the collector electrode of triode b connects resistance f, the emitter of triode b connects the negative pole of load circuit, the other end of resistance f connects the base stage of triode c, the collector electrode of triode c connects the positive pole of load circuit, resistance a, resistance c, resistance d, the emitter of resistance e and triode c is connected with switch, resistance b, the negative pole of level pressure conversion IC a and load circuit is connected with the negative pole of storage battery; Described overcharge protection circuit comprises the resistance g and the resistance h of series connection; connect a level pressure conversion IC b between resistance g and the resistance h; described level pressure conversion IC b connects resistance i; resistance g connects the positive pole of storage battery; resistance i connects the positive pole of solar cell, and resistance h is connected the negative pole of storage battery and solar cell with level pressure conversion IC b.
Technique scheme can also have following improvement project: the model of described level pressure conversion IC a and level pressure conversion IC b is TL431; The model of described triode a is 9015; The model of described triode b is 8050; The model of described triode c is 8550; The rated voltage of described storage battery is 3.2V; The model of described rectifier diode is 5817; The resistance of described resistance f is 20K Ω; The resistance of described resistance g is 50K Ω, and the resistance of resistance h is 100K Ω, and the resistance of resistance i is 10 Ω.
The beneficial effects of the utility model are: owing to also be connected with over-discharge protection circuit in the loop of storage battery and load circuit and switch formation; between storage battery and solar cell, also be parallel with overcharge protection circuit, so the utility model mistake simple in structure, that have when discharge is put defencive function and the over-charge protective function when charging.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a circuit structure principle schematic of the present utility model.
Embodiment
With reference to Fig. 1, a kind of solar cell core of the utility model protective circuit, comprise solar cell 1, the storage battery 2 in parallel with solar cell 1, be connected in the rectifier diode 3 between the positive pole of the positive pole of solar cell 1 and storage battery 2, with storage battery 2 load in parallel circuit 4 and the switch 5 that is series at load circuit 4 positive poles, in the loop that storage battery 2 and load circuit 4 and switch 5 constitute, also be connected with over-discharge protection circuit 6, between storage battery 2 and solar cell 1, also be parallel with overcharge protection circuit 7, described over-discharge protection circuit 6 comprises the resistance a 61 and the resistance b 62 of series connection, be connected with a level pressure conversion IC a 63 between resistance a and the resistance b, described level pressure conversion IC a connects the base stage of resistance c 64 and triode a 65, the emitter of triode a connects resistance d 66, the collector electrode of triode a connects resistance e 67 and the base stage of triode b 68 and the negative pole of load circuit 4, the collector electrode of triode b connects resistance f69, the emitter of triode b connects the negative pole of load circuit 4, the other end of resistance f connects the base stage of triode c 610, the collector electrode of triode c connects the positive pole of load circuit 4, resistance a, resistance c, resistance d, the emitter of resistance e and triode c is connected with switch 5, resistance b, the negative pole of level pressure conversion IC a and load circuit 4 is connected with the negative pole of storage battery 2; Described overcharge protection circuit 7 comprises the resistance g 71 and the resistance h 72 of series connection; connect a level pressure conversion IC b 73 between resistance g and the resistance h; described level pressure conversion IC b connects resistance i 74; resistance g connects the positive pole of storage battery 2; resistance i connects the positive pole of solar cell 1, and resistance h is connected the negative pole of storage battery 2 and solar cell 1 with level pressure conversion IC b.
Technique scheme can also have following improvement project: the model of described level pressure conversion IC a 63 and level pressure conversion IC b 73 is TL431; The model of described triode a 65 is 9015; The model of described triode b 68 is 8050; The model of described triode c 610 is 8550; The rated voltage of described storage battery 2 is 3.2V; The model of described rectifier diode 3 is 5817; The resistance of described resistance f 69 is 20K Ω; The resistance of described resistance g 71 is 50K Ω, and the resistance of resistance h 72 is 100K Ω, and the resistance of resistance I 74 is 10 Ω.
Operation principle of the present utility model: switch 5 is opened, when electric current flows into resistance a 61, resistance c 64, resistance e 67 respectively, triode a 65, model is 9015, works on power, and makes triode 9015 produce base bias voltage, make resistance f 69 and triode c 610 carry out work synchronously simultaneously, triode c model is 8550, makes triode c 610 be linked to be the conducting loop, makes load circuit 4 enter normal operating conditions.Load shown in Figure 1 is three light-emitting diodes, and in actual applications, load can be other power consumption equipment that is suitable for.When circuit constantly carries out the work discharge; over time; when electric current will have been put; by resistance a 61; resistance b 62; resistance c 64 and level pressure conversion IC a 63 (model is TL431) form over-discharge protection circuit 6; when making storage battery 2 voltages of this 3.2V be put into 2.4V; producing bias voltage between resistance a 61 and the resistance b 62 makes level pressure conversion IC a 63 beginning operate as normal produce high potential; at this moment; the base stage of triode a 65 becomes high potential; under this situation, triode a 65; triode b 68; triode c 610 enters halted state, like this; just the electric current of storage battery 2 can not put, and begin storage of electrical energy when charging for the second time again.After storage battery 2 voltages are full of; when surpassing voltage; by producing bias voltage between resistance g 71 and the resistance h 72; make level pressure conversion IC b 73 (model is TL431) carry out work, simultaneously, the voltage above the resistance i 74 (power is 2W) is added to the two ends of solar cell 1 after by level pressure conversion IC b 73; make the discharge that circulates simultaneously of resistance i 74 and solar cell 1; like this, bad with regard to storage battery 2 not being filled, so having high pressure to overcharge with low pressure, the utility model crosses the defencive function of putting.
Claims (9)
1. solar cell core protective circuit, comprise solar cell (1), the storage battery (2) in parallel with solar cell (1), be connected in the rectifier diode (3) between the positive pole of the positive pole of solar cell (1) and storage battery (2), with storage battery (2) load in parallel circuit (4) and be series at the anodal switch (5) of load circuit (4), it is characterized in that: in the loop that storage battery (2) and load circuit (4) and switch (5) constitute, also be connected with over-discharge protection circuit (6), between storage battery (2) and solar cell (1), also be parallel with overcharge protection circuit (7), described over-discharge protection circuit (6) comprises the resistance a (61) and the resistance b (62) of series connection, be connected with a level pressure conversion IC a (63) between resistance a and the resistance b, described level pressure conversion IC a connects the base stage of resistance c (64) and triode a (65), the emitter of triode a connects resistance d (66), the collector electrode of triode a connects resistance e (67) and the base stage of triode b (68) and the negative pole of load circuit (4), the collector electrode of triode b connects resistance f (69), the emitter of triode b connects the negative pole of load circuit (4), the other end of resistance f connects the base stage of triode c (610), the collector electrode of triode c connects the positive pole of load circuit (4), resistance a, resistance c, resistance d, the emitter of resistance e and triode c is connected resistance b with switch (5), the negative pole of level pressure conversion IC a and load circuit (4) is connected with the negative pole of storage battery (2); Described overcharge protection circuit (7) comprises the resistance g (71) and the resistance h (72) of series connection; connect a level pressure conversion IC b (73) between resistance g and the resistance h; described level pressure conversion IC b connects resistance i (74); resistance g connects the positive pole of storage battery (2); resistance i connects the positive pole of solar cell (1), and resistance h is connected the negative pole of storage battery (2) and solar cell (1) with level pressure conversion IC b.
2. solar cell core protective circuit according to claim 1 is characterized in that: the model of described level pressure conversion IC a (63) and level pressure conversion IC b (73) is TL431.
3. solar cell core protective circuit according to claim 1 is characterized in that: the model of described triode a (65) is 9015.
4. solar cell core protective circuit according to claim 1 is characterized in that: the model of described triode b (68) is 8050.
5. solar cell core protective circuit according to claim 1 is characterized in that: the model of described triode c (610) is 8550.
6. solar cell core protective circuit according to claim 1 is characterized in that: the rated voltage of described storage battery (2) is 3.2V.
7. solar cell core protective circuit according to claim 1 is characterized in that: the model of described rectifier diode (3) is 5817.
8. solar cell core protective circuit according to claim 1 is characterized in that: the resistance of described resistance f (69) is 20K Ω.
9. solar cell core protective circuit according to claim 1 is characterized in that: the resistance of described resistance g (71) is 50K Ω, and the resistance of resistance h (72) is 100K Ω, and the resistance of resistance i (74) is 10 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200591222U CN201450355U (en) | 2009-06-23 | 2009-06-23 | Core protection circuit of solar battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200591222U CN201450355U (en) | 2009-06-23 | 2009-06-23 | Core protection circuit of solar battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450355U true CN201450355U (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200591222U Expired - Fee Related CN201450355U (en) | 2009-06-23 | 2009-06-23 | Core protection circuit of solar battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868193A (en) * | 2012-09-12 | 2013-01-09 | 江苏大学 | Solar energy power supply circuit for wireless sensor network node |
-
2009
- 2009-06-23 CN CN2009200591222U patent/CN201450355U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868193A (en) * | 2012-09-12 | 2013-01-09 | 江苏大学 | Solar energy power supply circuit for wireless sensor network node |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20100623 |