CN103414165A - Storage battery discharge protection device - Google Patents
Storage battery discharge protection device Download PDFInfo
- Publication number
- CN103414165A CN103414165A CN201310260965XA CN201310260965A CN103414165A CN 103414165 A CN103414165 A CN 103414165A CN 201310260965X A CN201310260965X A CN 201310260965XA CN 201310260965 A CN201310260965 A CN 201310260965A CN 103414165 A CN103414165 A CN 103414165A
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- China
- Prior art keywords
- relay
- triode
- potentiometer
- voltage
- button switch
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- 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.)
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Abstract
The invention relates to a storage battery discharge protection device. The storage battery discharge protection device comprises a button switch, a potentiometer, a voltage-stabilizing tube, a triode, a relay and a load, wherein one end of the button switch is connected with one end of the potentiometer, the other end of the potentiometer is connected with a cathode end of the voltage-stabilizing tube, an anode end of the voltage-stabilizing tube is connected with a base of the triode, an emitter of the triode is grounded, a collector of the triode is connected with one end of a coil of the relay, the other end of the coil of the relay is parallelly connected with the potentiometer, a first normally open contact of the relay is connected in parallel with both ends of the button switch, one end of a second normally open contact of the relay is connected with the other end of the button switch, the other end of the second normally open contact of the relay is connected with one end of the load, and the other end of the load is grounded. The storage battery discharge protection device has the advantages of simple structure and low cost.
Description
Technical field
The present invention relates to a kind of battery discharging protective device.
Background technology
For guaranteeing that unattended equipment (such as attendance recorder etc.) still can move after outage, will add storage battery power supply in support usually.After grid cut-off, backup battery starts equipment is powered.At this moment, battery over-discharge protection circuit must be set.So, must a kind of automatic protection circuit with the hysteresis function of design.Have in the market some ready-made battery protection chips to apply, but these chips are applied to the protection of lithium battery more, electric pressure focuses mostly in the 5V left and right.In the higher battery applications of some electric pressures, for example, the electric power system of 10V to 50V may just can't be applied.
Summary of the invention
For above-mentioned technical problem, main purpose of the present invention is that a kind of battery discharging protective device is provided.That the present invention has advantages of is simple in structure, cost is low.
The technical scheme solved the problems of the technologies described above is as follows:
The battery discharging protective device, comprise push-button switch, potentiometer, voltage-stabiliser tube, triode, relay and load, one end of push-button switch is connected with an end of potentiometer, the other end of potentiometer is connected with the cathode terminal of voltage-stabiliser tube, the anode tap of voltage-stabiliser tube is connected with the base stage of triode, the grounded emitter of triode, the collector electrode of triode is connected with an end of the coil of relay, the other end of the coil of relay forms in parallel with potentiometer, the first normally opened contact of relay is connected in parallel on the two ends of push-button switch, one end of the second normally opened contact of relay is connected with the other end of push-button switch, the other end of the second normally opened contact of relay is connected with an end of load, the other end ground connection of load.
Also comprise a diode, the two ends of this diode are connected in parallel on the two ends of the coil of relay.
Also comprise a voltmeter be used to the storage battery two ends that are connected in parallel on electric discharge, an end ground connection of this voltmeter, the other end of voltmeter is connected with the first normally opened contact of relay.
Adopted such scheme, when storage battery is discharged, the two ends of storage battery are connected in parallel on to the two ends of voltmeter, the push button switch, the voltage of storage battery output punctures voltage-stabiliser tube, and transistor base has enough electric currents and leads to, and the coil of relay obtains electric, make relay the first normally opened contact and and two normally opened contact closures, thereby storage battery is to the load continued power.Along with power-on time extends; voltage on storage battery also descends thereupon; when the voltage on being carried in voltage-stabiliser tube was less than the puncture voltage of voltage-stabiliser tube, voltage-stabiliser tube can't be breakdown, and no current is transported to the base stage of triode; thereby triode cut-off; the coil losing electricity of relay, the first normally opened contact of relay and the second normal contact disconnect, and cut off load circuit; storage battery stops electric discharge, thereby realizes automatic over.
The accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present invention;
Embodiment
With reference to Fig. 1, a kind of battery discharging protective device of the present invention, comprise push-button switch SB, potentiometer R1, voltage-stabiliser tube D1, triode Q1, relay and load R0.The end of push-button switch SB is connected with the end of potentiometer R1, and the other end of potentiometer R1 is connected with the cathode terminal of voltage-stabiliser tube D1, between potentiometer and voltage-stabiliser tube, also is connected with a resistance R 2.The anode tap of voltage-stabiliser tube D1 is connected with the base stage of triode Q1, and the anode tap of voltage-stabiliser tube D1 is also by resistance R 3 ground connection.The grounded emitter of triode Q1, the collector electrode of triode Q1 is connected with the end of the coil KM of relay, and the other end of the coil KM of relay forms in parallel with potentiometer R1.The first normally opened contact KM1 of relay is connected in parallel on the two ends of push-button switch SB, the end of the second normally opened contact KM2 of relay is connected with the other end of push-button switch SB, the other end of the second normally opened contact KM2 of relay is connected with the end of load R0, the other end ground connection of load R0.Also comprise a diode D2, the two ends of this diode D2 are connected in parallel on the two ends of the coil KM of relay, and diode D2 forms discharge loop to the coil of relay.Also comprise a voltmeter V be used to the storage battery X two ends that are connected in parallel on electric discharge, the end ground connection of this voltmeter V, the other end of voltmeter V is connected with the first normally opened contact KM1 of relay.
Claims (3)
1. battery discharging protective device, it is characterized in that, comprise push-button switch, potentiometer, voltage-stabiliser tube, triode, relay and load, one end of push-button switch is connected with an end of potentiometer, the other end of potentiometer is connected with the cathode terminal of voltage-stabiliser tube, the anode tap of voltage-stabiliser tube is connected with the base stage of triode, the grounded emitter of triode, the collector electrode of triode is connected with an end of the coil of relay, the other end of the coil of relay forms in parallel with potentiometer, the first normally opened contact of relay is connected in parallel on the two ends of push-button switch, one end of the second normally opened contact of relay is connected with the other end of push-button switch, the other end of the second normally opened contact of relay is connected with an end of load, the other end ground connection of load.
2. battery discharging protective device according to claim 1, it is characterized in that: also comprise a diode, the two ends of this diode are connected in parallel on the two ends of the coil of relay.
3. battery discharging protective device according to claim 1 is characterized in that: also comprise a voltmeter be used to the storage battery two ends that are connected in parallel on electric discharge, and an end ground connection of this voltmeter, the other end of voltmeter is connected with the first normally opened contact of relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260965XA CN103414165A (en) | 2013-06-25 | 2013-06-25 | Storage battery discharge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260965XA CN103414165A (en) | 2013-06-25 | 2013-06-25 | Storage battery discharge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103414165A true CN103414165A (en) | 2013-11-27 |
Family
ID=49607157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310260965XA Pending CN103414165A (en) | 2013-06-25 | 2013-06-25 | Storage battery discharge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103414165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701103A (en) * | 2014-01-06 | 2014-04-02 | 黄宇嵩 | Protective device capable of preventing over-discharge of lead-acid storage battery |
| CN103986126A (en) * | 2014-06-06 | 2014-08-13 | 郭婵 | Low-voltage control protection device for storage batteries |
| CN107834691A (en) * | 2017-10-24 | 2018-03-23 | 常熟市通用电器厂有限公司 | A kind of microcomputer system power supply is met an urgent need change-over circuit |
-
2013
- 2013-06-25 CN CN201310260965XA patent/CN103414165A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701103A (en) * | 2014-01-06 | 2014-04-02 | 黄宇嵩 | Protective device capable of preventing over-discharge of lead-acid storage battery |
| CN103986126A (en) * | 2014-06-06 | 2014-08-13 | 郭婵 | Low-voltage control protection device for storage batteries |
| CN107834691A (en) * | 2017-10-24 | 2018-03-23 | 常熟市通用电器厂有限公司 | A kind of microcomputer system power supply is met an urgent need change-over circuit |
| CN107834691B (en) * | 2017-10-24 | 2023-10-24 | 常熟市通用电器厂有限公司 | Emergent converting circuit of microcomputer system power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131127 |