CN204732857U - A kind of have the anti-overcharge circuit being full of instruction - Google Patents
A kind of have the anti-overcharge circuit being full of instruction Download PDFInfo
- Publication number
- CN204732857U CN204732857U CN201520340126.3U CN201520340126U CN204732857U CN 204732857 U CN204732857 U CN 204732857U CN 201520340126 U CN201520340126 U CN 201520340126U CN 204732857 U CN204732857 U CN 204732857U
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- China
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- circuit
- output
- relay
- full
- optocoupler
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Abstract
The utility model provides a kind of and has the anti-overcharge circuit being full of instruction, comprise transforming circuit, charging circuit, comparison circuit and reference voltage, the cathode output end of transforming circuit is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the electrode input end of charging circuit, the output Chang Kaiduan of relay is connected with an input of relay and optocoupler output negative pole, the cathode output end of charging circuit and the positive pole of storage battery, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler.The utility model by relay, disconnects transforming circuit and charging circuit, charging circuit is disconnected completely after battery is full of, and avoids the charging be full of to battery after electricity, avoids situation about overcharging, can indicate again situation about being full of.
Description
Technical field
The utility model relates to electronic circuit field, particularly relates to a kind ofly to have the anti-overcharge circuit being full of instruction.
Background technology
Existing storage battery has the circuit preventing from overcharging, but existing circuit is all when being full of, charging circuit does not export, after having spent a period of time, cell voltage declines a little a little, then charging circuit can charge again, and this has just occurred the situation of floating charge, is easy to cause the life-span of battery to reduce.
Summary of the invention
The technical problems to be solved in the utility model, is that providing a kind of has the anti-overcharge circuit being full of instruction, solves the problem of over-charging of battery.
The utility model is achieved in that a kind ofly have the anti-overcharge circuit being full of instruction, comprise transforming circuit, charging circuit, comparison circuit and reference voltage, the cathode output end of transforming circuit is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the electrode input end of charging circuit, the output Chang Kaiduan of relay is connected with an input of relay and optocoupler output negative pole, the cathode output end of charging circuit and the positive pole of storage battery, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transforming circuit, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of storage battery and the negative input ground connection of optocoupler, the minus earth of light-emitting diode, the positive pole of light-emitting diode is connected with an input of relay.
The utility model tool has the following advantages: by relay, disconnects transforming circuit and charging circuit after battery is full of, and charging circuit is disconnected completely, avoid the charging be full of to battery after electricity, avoid situation about overcharging, after being full of electricity, light-emitting diode can be lit, and realizes being full of prompting.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model circuit.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1, the utility model provides a kind of and has the anti-overcharge circuit being full of instruction, comprise transforming circuit, charging circuit, comparison circuit and reference voltage, the cathode output end of transforming circuit is connected with the output cathode of the output common port of relay LS1 and optocoupler U1, the output normal-closed end of relay is connected with the electrode input end of charging circuit, the output Chang Kaiduan of relay is connected with an input of relay and optocoupler output negative pole, the cathode output end of charging circuit and the positive pole of storage battery BT1, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transforming circuit, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of storage battery and the negative input ground connection of optocoupler, the minus earth of light-emitting diode D1, the positive pole of light-emitting diode is connected with an input of relay.
Wherein, relay is five pin relays, and under input no power state, the output common port of relay is connected with output normal-closed end, and under the state of input energising, the output common port of relay can be connected with output Chang Kaiduan.According to the voltage of different input, common model has varied, as the JQC-3F etc. of the SRD-12VDC-SL-C of 12V, 5V.Optocoupler is when input is energized, and inner light-emitting diode can be luminous, makes the triode ON of output.Common model has PC817, TLP351 etc.Transforming circuit for realizing the transformation of voltage, thus produces direct voltage, and as changed to output voltage from high direct voltage, DC low-voltage changes to output voltage or alternating voltage changes to direct voltage.Common transforming circuit form comprises LDO, DC-DC and AC-DC etc.If namely common charger for mobile phone is AC-DC transforming circuit.Charging circuit is used for the voltage of potential circuit to be charged in storage battery, and charging circuit can realize voltage detecting, electric current and voltage control etc., can ensure the safety of storage battery.Comparison circuit is for realizing the comparison of reference voltage and battery tension, and when storage battery is full of, the voltage of storage battery can higher than reference voltage, now comparison circuit exports high level, if storage battery is not full of, then battery tension is lower than reference voltage, now comparison circuit output low level.Reference voltage is exactly a stable voltage, simply can carry out electric resistance partial pressure realization to the voltage of transforming circuit, requires that the high reference voltage chip that can adopt realizes stable reference voltage accurately.
In use, transforming circuit connects output dc voltage after external voltage to the utility model, now relay output common port with export Chang Kaiduan and be interconnected, transforming circuit is connected with charging circuit, and charging circuit charges a battery.Now storage battery is not also full of electricity, and voltage is lower, comparison circuit output low level, and optocoupler does not work, and relay does not also work.Simultaneously light-emitting diode not electricly not work.After storage battery is full of electricity, battery tension raises, battery tension is greater than reference voltage, now optocoupler luminescence work, optocoupler triode ON, the cathode voltage of transforming circuit is made to be added to the input of relay, relay input is made to obtain electric and start adhesive, after adhesive, the output common port of relay is connected with output Chang Kaiduan, the cathode output end of transforming circuit is made directly to receive the input of relay, the energising of latching relay, relay can be remained on always and export common port and the state that is connected of output Chang Kaiduan, thus be disconnected the physical connection of transforming circuit and charging circuit, storage battery is not recharged.Light-emitting diode obtains electric lighting simultaneously, instruction electricity full condition.Even if now battery tension declines to some extent, also can not affect the work of relay, namely relay still can keep the state that the connection of transforming circuit and charging circuit disconnects.And when needs charge again to storage battery, only need the power supply disconnecting transforming circuit, then once charge on the power supply connecting transforming circuit can carry out.Thus avoiding when power supply connects, battery tension declines the problem will carrying out charging a little.The utility model has completely cut off transforming circuit and charging circuit physically, it also avoid transforming circuit to problems such as the electromagnetic interference of charging voltage.
The foregoing is only embodiment of the present utility model; not thereby scope of patent protection of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. one kind has the anti-overcharge circuit being full of instruction, it is characterized in that: comprise transforming circuit, charging circuit, comparison circuit and reference voltage, the cathode output end of transforming circuit is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the electrode input end of charging circuit, the output Chang Kaiduan of relay is connected with an input of relay and optocoupler output negative pole, the cathode output end of charging circuit and the positive pole of storage battery, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transforming circuit, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of storage battery and the negative input ground connection of optocoupler, the minus earth of light-emitting diode, the positive pole of light-emitting diode is connected with an input of relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340126.3U CN204732857U (en) | 2015-05-25 | 2015-05-25 | A kind of have the anti-overcharge circuit being full of instruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340126.3U CN204732857U (en) | 2015-05-25 | 2015-05-25 | A kind of have the anti-overcharge circuit being full of instruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732857U true CN204732857U (en) | 2015-10-28 |
Family
ID=54391182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520340126.3U Expired - Fee Related CN204732857U (en) | 2015-05-25 | 2015-05-25 | A kind of have the anti-overcharge circuit being full of instruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204732857U (en) |
-
2015
- 2015-05-25 CN CN201520340126.3U patent/CN204732857U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |