CN104600763A - Under-voltage protection circuit and lamp - Google Patents
Under-voltage protection circuit and lamp Download PDFInfo
- Publication number
- CN104600763A CN104600763A CN201310529199.2A CN201310529199A CN104600763A CN 104600763 A CN104600763 A CN 104600763A CN 201310529199 A CN201310529199 A CN 201310529199A CN 104600763 A CN104600763 A CN 104600763A
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Classifications
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- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses an under-voltage protection circuit and a lamp. The under-voltage protection circuit comprises a reset unit, a detection unit, a control unit and a switch unit, wherein the control unit is connected with the detection unit; the detection unit is connected with a battery, a charge circuit, the reset unit, a subordinate circuit and the detection unit; the under-voltage protection circuit is started by the reset unit; when the detection unit detects that the electric quantity of the battery is smaller than a set value, the control unit is used for controlling that a first end of the switch unit is connected with a second end and the battery is connected with the charge circuit and is kept in a charge state; when the electric quantity of the battery is restored to be normal, the under-voltage protection circuit is newly started by the reset unit, and the control unit is used for controlling that the first end of the control switch is connected with a third end and the battery is connected with the subordinate circuit. Under-voltage protection can be performed on the battery, the life of the battery is prolonged, a self-locking function is realized, and economic loss and major accidents are prevented.
Description
Technical field
The present invention relates to protective circuit, particularly relate to under-voltage protecting circuit and light fixture.
Background technology
In prior art, when cell voltage is too low, under-voltage protection is not had to cause battery over-discharge; affect battery, when cell voltage is too low, automatically can not start charge function, cause battery to be in starvation for a long time; make battery performance reduce or scrap, cause unnecessary economic loss.In addition in specific occasion, some appliance requires maintenance operating state, if having people's misoperation device shutdown, just likely cause economic loss, even cause a serious accident invention.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming the existence of above-mentioned prior art; and a kind of under-voltage protecting circuit and light fixture are proposed; it can solve does not have under-voltage protection to cause battery over-discharge; affect battery, and because misoperation brings the problem such as economic loss and security incident.
For solving the problems of the technologies described above, the present invention proposes a kind of under-voltage protecting circuit, and it comprises: reset unit, and it is for starting under-voltage protecting circuit, and keeps under-voltage protecting circuit work or disconnect with subordinate circuit, and it comprises input and output; Detecting unit, whether it is for detecting the electricity of battery lower than set point, and it comprises input, the first output and the second output; Control unit, it comprises first input end, the second input and output, and the first input end of control unit connects the first output of detecting unit, and the second input of control unit connects the second output of detecting unit; Switch element, its for control under-voltage protecting circuit in under-voltage charging and normal time power, it comprises relay, relay comprises hot-wire coil and is controlled by the switch of hot-wire coil, switch comprises first end, the second end and the 3rd end, the first end of switch connects the positive pole of battery, second end of switch connects the output of charging circuit and reset unit, the three-terminal link subordinate circuit of switch, one end of hot-wire coil connects the negative pole of battery, and the other end of hot-wire coil connects the input of reset unit; Wherein, reset unit starts under-voltage protecting circuit, and when detecting unit detects the electricity of battery lower than set point, the first end of control unit control switch unit is connected with the second end, and battery is connected with charging circuit, and battery is in charged state; When the electricity of battery recovers normal, user restarts under-voltage protecting circuit by reset unit and could work, the first end of control unit control switch unit and three-terminal link, and battery is connected with subordinate circuit; When under-voltage protecting circuit is in running order, user only has could stop under-voltage protecting circuit work by reset unit.
Preferably, reset unit comprises touch-switch, and one end of touch-switch connects the input of reset unit, and the other end of touch-switch connects the output of reset unit.
Preferably, detecting unit comprises the first resistance and the second resistance, one end of first resistance connects input and first output of detecting unit, and the other end of the first resistance connects one end of the second resistance and the second output of detecting unit, the other end ground connection of the second resistance.
Preferably, control unit comprises the 3rd resistance, the first switching tube and second switch pipe; First switching tube comprises control end, input and output, and second switch pipe comprises control end, input and output; The first input end of the input connection control unit of the first switching tube, the control end of the first switching tube connects the input of second switch pipe, the output of the output connection control unit of the first switching tube, second input of the control end connection control unit of second switch pipe, the output head grounding of second switch pipe, between the control end that the first resistance is connected to the first switching tube and input.
Preferably, the first switching tube is triode, and the base stage of triode is the control end of the first switching tube, the input of the transmitting of triode very the first switching tube, the output of the current collection of triode very the first switching tube.
Preferably, second switch pipe is triode, and the base stage of triode is the control end of second switch pipe, the input of the current collection of triode very second switch pipe, the output of the transmitting of triode very second switch pipe.
Preferably, switch element also comprises diode, the second end of the negative electrode connecting valve of diode, and the anode of diode connects charging circuit.
Preferably, under-voltage protecting circuit also comprises indicating member, and whether it is under-voltage for showing under-voltage protecting circuit, and it comprises indicator light and the 4th resistance, and indicator light and the 4th resistance are connected between the output of switch element and ground successively.
The present invention also proposes a kind of light fixture, and it comprises described under-voltage protecting circuit.
Compared with prior art; the present invention has following beneficial effect: under-voltage protecting circuit of the present invention and light fixture; protect when battery undervoltage; and charge; the useful life of battery can be extended like this; and there is auto-lock function, prevent from causing serious accident and economic loss because of misoperation closing device.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of under-voltage protecting circuit of the present invention.
Wherein, description of reference numerals is as follows: reset unit 1 touch-switch S1 detecting unit 2 first resistance R1 second resistance R2 control unit 3 the 3rd resistance R3 triode Q1 triode Q2 switch element 4 relay K 1 diode D1 indicating member 5 indicator light LED1 the 4th resistance R4 battery BT1.
Embodiment
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
under-voltage protecting circuit embodiment: refer to Fig. 1, the present invention proposes a kind of under-voltage protecting circuit, and it comprises: reset unit 1, detecting unit 2, control unit 3, switch element 4 and indicating member 5.
Reset unit 1 comprises input and output, and detecting unit 2 comprises input, the first output and the second output, and control unit 3 comprises first input end, the second input and output.Switch element comprises relay K 1, and relay K 1 comprises hot-wire coil and is controlled by the switch of hot-wire coil, and switch comprises first end, the second end and the 3rd end.
The first input end of control unit 3 connects the first output of detecting unit 2, second input of control unit 3 connects the second output of detecting unit 2, the first end of switch connects the positive pole of battery, second end of switch connects the output of charging circuit and reset unit, the three-terminal link subordinate circuit of switch, one end of hot-wire coil connects the negative pole of battery, and the other end of hot-wire coil connects the input of reset unit.
Reset unit 1 is for starting under-voltage protecting circuit; detecting unit 2 for the voltage of testing circuit whether lower than the set point of setting; control unit 3 control switch unit 4; switch element 4 for control circuit in under-voltage charging and normal time power, whether indicating member 5 under-voltage for showing under-voltage protecting circuit.
Wherein, reset unit 1 starts under-voltage protecting circuit, and when detecting unit 2 detects the electricity of battery BT1 lower than set point, the first end of control unit 3 control switch is connected with the second end, and battery BT1 is connected with charging circuit, and battery BT1 is in charged state; When the electricity of battery BT1 recovers normal, reset unit 1 restarts under-voltage protecting circuit, the first end of control unit 3 control switch and three-terminal link, and battery BT1 is connected with subordinate circuit; When described under-voltage protecting circuit is in running order, user only has could stop described under-voltage protecting circuit work by described reset unit.
Reset unit 1 comprises touch-switch S1.One end of touch-switch S1 connects the input of reset unit 1, and the other end of touch-switch S1 connects the output of reset unit 1.
Detecting unit 2 comprises the first resistance R1 and the second resistance R2.One end of first resistance R1 connects input and first output of detecting unit 2, and the other end of the first resistance R1 connects one end of the second resistance R2 and the second output of detecting unit 2, the other end ground connection of the second resistance R2.
Control unit 3 comprises the 3rd resistance R3, the first switching tube and second switch pipe.First switching tube comprises control end, input and output, and second switch pipe comprises control end, input and output.The first input end of the input connection control unit 3 of the first switching tube, the control end of the first switching tube connects the input of second switch pipe, the output of the output connection control unit 3 of the first switching tube, second input of the control end connection control unit 3 of second switch pipe, the output head grounding of second switch pipe, between the control end that the first resistance R1 is connected to the first switching tube and input.
In the present embodiment, the first switching tube is triode Q1, and the base stage of triode Q1 is the control end of the first switching tube, the input of the transmitting of triode Q1 very the first switching tube, the output of the current collection of triode Q1 very the first switching tube.In other embodiments, triode Q1 also can replace with metal-oxide-semiconductor.
In the present embodiment, second switch pipe is triode Q2, and the base stage of triode Q2 is the control end of second switch pipe, the input of the current collection of triode Q2 very second switch pipe, the output of the transmitting of triode Q2 very second switch pipe.In other embodiments, triode Q2 also can replace with metal-oxide-semiconductor.
Switch element 4 also comprises diode D1.Second end of the negative electrode connecting valve of diode D1, the anode of diode D1 connects charging circuit.In the present embodiment, switch is single-pole double-throw switch (SPDT).
Indicating member 5 comprises indicator light LED1 and the 4th resistance R4.Between the output that indicator light LED1 and the 4th resistance R4 is connected on switch element 4 successively and ground.
light fixture embodiment: the present invention also proposes a kind of light fixture, and it comprises under-voltage protecting circuit as above.
Operation principle of the present invention is described in detail below in conjunction with Fig. 1.
Press touch-switch S1, relay K 1 coil obtains electric adhesive, and relay K 1 contact connects as normally opened contact b point, and the positive pole of battery BT1 is switched to output end vo end, and export high level, output indicator LED1 lights.After the first resistance R1 and the second resistance R2 dividing potential drop, the base stage of triode Q2 is high level, triode Q2 conducting, then triode Q1 conducting, electric current, through triode Q1, relay K 1 coil, now unclamps touch-switch S1, exporting is also high level, and circuit is in the lock state.
Along with the carrying out that battery BT1 discharges, the voltage of battery BT1 reduces and slowly reduces, when the voltage of battery BT1 is lower than the set point set, after the first resistance R1 and the second resistance R2 dividing potential drop, the base stage of triode Q2 is low level, triode Q2 becomes shutoff from conducting, then triode Q1 turns off, and relay K 1 coil no current flows through, and relay K 1 contact connects as normally-closed contact a point, battery BT1 positive pole is switched to charging circuit port and charges, output low level.Now press touch-switch S1, relay K 1 coil obtains electric adhesive, and relay K 1 contact is normally opened contact b point, and battery BT1 positive pole is switched to output end vo end, output low level, base stage because of triode Q2 is low level, and triode Q2 is in off state, and triode Q1 also turns off, be in unlock state, unclamp touch-switch S1, relay K 1 dead electricity is in non-pull state, and contact changes a point into and continues charging.
Compared with prior art; the present invention has following beneficial effect: under-voltage protecting circuit of the present invention and light fixture; protect when battery undervoltage; and charge; the useful life of battery can be extended like this; and there is auto-lock function, prevent from causing serious accident and economic loss because of misoperation closing device.
These are only better possible embodiments of the present invention, not limit the scope of the invention, all utilizations specification of the present invention and the change of the equivalent structure done by accompanying drawing content, be all included in protection scope of the present invention.
Claims (9)
1. a under-voltage protecting circuit, is characterized in that, it comprises:
Reset unit, it is for starting described under-voltage protecting circuit, and keeps described under-voltage protecting circuit work or disconnect with subordinate circuit, and it comprises input and output;
Detecting unit, whether it is for detecting the electricity of battery lower than set point, and it comprises input, the first output and the second output;
Control unit, it comprises first input end, the second input and output, and the first input end of described control unit connects the first output of described detecting unit, and the second input of described control unit connects the second output of described detecting unit;
Switch element, its for control described under-voltage protecting circuit in under-voltage charging and normal time power, it comprises relay, described relay comprises hot-wire coil and is controlled by the switch of described hot-wire coil, described switch comprises first end, second end and the 3rd end, the first end of described switch connects the positive pole of described battery, second end of described switch connects the output of charging circuit and described reset unit, subordinate's circuit described in the three-terminal link of described switch, one end of described hot-wire coil connects the negative pole of described battery, the other end of described hot-wire coil connects the input of described reset unit,
Wherein, described reset unit starts described under-voltage protecting circuit, when described detecting unit detects the electricity of described battery lower than described set point, the first end that described control unit controls described switch is connected with the second end, described battery is connected with described charging circuit, and described battery is in charged state; When the electricity of described battery recovers normal, user restarts described under-voltage protecting circuit by described reset unit and could work, and described control unit controls first end and the three-terminal link of described switch element, and described battery is connected with described subordinate circuit; When described under-voltage protecting circuit is in running order, user only has could stop described under-voltage protecting circuit work by described reset unit.
2. under-voltage protecting circuit as claimed in claim 1, it is characterized in that, described reset unit comprises touch-switch, and one end of described touch-switch connects the input of described reset unit, and the other end of described touch-switch connects the output of described reset unit.
3. under-voltage protecting circuit as claimed in claim 1; it is characterized in that; described detecting unit comprises the first resistance and the second resistance; one end of described first resistance connects input and first output of described detecting unit; the other end of described first resistance connects one end of described second resistance and the second output of detecting unit, the other end ground connection of described second resistance.
4. under-voltage protecting circuit as claimed in claim 1, it is characterized in that, described control unit comprises the 3rd resistance, the first switching tube and second switch pipe; Described first switching tube comprises control end, input and output, and described second switch pipe comprises control end, input and output; The input of described first switching tube connects the first input end of described control unit, the control end of described first switching tube connects the input of described second switch pipe, the output of described first switching tube connects the output of described control unit, the control end of described second switch pipe connects the second input of described control unit, the output head grounding of described second switch pipe, between the control end that described first resistance is connected to described first switching tube and input.
5. under-voltage protecting circuit as claimed in claim 4; it is characterized in that; described first switching tube is triode; the base stage of described triode is the control end of described first switching tube; the input of very described first switching tube of transmitting of described triode, the output of very described first switching tube of current collection of described triode.
6. under-voltage protecting circuit as claimed in claim 4; it is characterized in that; described second switch pipe is triode; the base stage of described triode is the control end of described second switch pipe; the input of the very described second switch pipe of current collection of described triode, the output of the very described second switch pipe of transmitting of described triode.
7. under-voltage protecting circuit as claimed in claim 1, it is characterized in that, described switch element also comprises diode, and the negative electrode of described diode connects the second end of described switch, and the anode of described diode connects described charging circuit.
8. under-voltage protecting circuit as claimed in claim 1; it is characterized in that; described under-voltage protecting circuit also comprises indicating member; whether it is under-voltage for showing described under-voltage protecting circuit; it comprises indicator light and the 4th resistance, between the output that described indicator light and the 4th resistance are connected on described switch element successively and ground.
9. a light fixture, is characterized in that, it comprises the under-voltage protecting circuit as described in claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529199.2A CN104600763B (en) | 2013-10-30 | 2013-10-30 | Under-voltage protecting circuit and lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529199.2A CN104600763B (en) | 2013-10-30 | 2013-10-30 | Under-voltage protecting circuit and lamps and lanterns |
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| Publication Number | Publication Date |
|---|---|
| CN104600763A true CN104600763A (en) | 2015-05-06 |
| CN104600763B CN104600763B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310529199.2A Active CN104600763B (en) | 2013-10-30 | 2013-10-30 | Under-voltage protecting circuit and lamps and lanterns |
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| Country | Link |
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| CN (1) | CN104600763B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947273A (en) * | 2017-12-04 | 2018-04-20 | 郑州天舜电子技术有限公司 | A kind of energy storage battery intelligent control circuit |
| CN107968455A (en) * | 2017-12-04 | 2018-04-27 | 郑州天舜电子技术有限公司 | A kind of storage battery charging-discharging intelligent control circuit |
| CN109474034A (en) * | 2018-11-09 | 2019-03-15 | 浙江国自机器人技术有限公司 | A kind of equipment of autonomous charging of robots, the system of robot and its recharging |
| CN109980609A (en) * | 2019-03-29 | 2019-07-05 | 江苏原容新能源科技有限公司 | Battery under-voltage protection method and system based on BMS |
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| CN102300351A (en) * | 2010-06-28 | 2011-12-28 | 昆山正国能源科技有限公司 | Solar energy light emitting diode (LED) illuminating lamp |
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| US5617010A (en) * | 1994-07-06 | 1997-04-01 | Mitsumi Electric Co., Ltd. | Overcharge and overdischarge protection for a chargeable electric cell operable with a reduced current consumption |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947273A (en) * | 2017-12-04 | 2018-04-20 | 郑州天舜电子技术有限公司 | A kind of energy storage battery intelligent control circuit |
| CN107968455A (en) * | 2017-12-04 | 2018-04-27 | 郑州天舜电子技术有限公司 | A kind of storage battery charging-discharging intelligent control circuit |
| CN109474034A (en) * | 2018-11-09 | 2019-03-15 | 浙江国自机器人技术有限公司 | A kind of equipment of autonomous charging of robots, the system of robot and its recharging |
| CN109980609A (en) * | 2019-03-29 | 2019-07-05 | 江苏原容新能源科技有限公司 | Battery under-voltage protection method and system based on BMS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104600763B (en) | 2018-09-07 |
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