CN104184129B - Low battery battery protecting method and circuit and its light fixture - Google Patents
Low battery battery protecting method and circuit and its light fixture Download PDFInfo
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- CN104184129B CN104184129B CN201310198800.4A CN201310198800A CN104184129B CN 104184129 B CN104184129 B CN 104184129B CN 201310198800 A CN201310198800 A CN 201310198800A CN 104184129 B CN104184129 B CN 104184129B
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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
Low battery battery protecting method of the present invention and circuit and light fixture, prevent the rechargeable battery with shut-off chip from being used under low battery.Electric discharge current-limiting resistance is connected with discharge diode, discharge diode, is connected across the two ends of battery；Electric discharge biasing resistor is connected with monitoring triode, is connected across the two ends of battery, and the colelctor electrode for monitoring triode is also connected with the base stage of discharge diode, controls the on or off of discharge diode；After voltage attenuation resistance is connected with monitoring biasing resistor, the two ends of battery are connected across, base stage of its series connection node also with monitoring triode is connected, the on or off of control monitoring triode.When the electricity of battery is close exhausts terminal, monitoring triode cut-off, discharge diode conducting, is battery repid discharge.The dump energy of battery is discharged, into the state that can not put electricity, reminds user to charge with this.Circuit structure is simple, and power consumption is small, low cost of manufacture.
Description
Technical field
The invention belongs to cell art, be related to the administrative skill of battery electric quantity, more particularly to battery protection circuit.
Background technology
In the light fixture without capacity prompt, battery in use, due to without power prompt function, causing user not
Know battery dump energy, influence user charges in time.
A kind of LED lamp control circuit of prior art, including control module, drive module and lowering and stabilizing blood pressure module, electricity
The DC voltage that pond provides produces a DC low-voltage after lowering and stabilizing blood pressure module, and the DC low-voltage is powered for control module,
The battery is also directly for drive module provides operating voltage.Control module sample obtaining one to the DC voltage that battery is provided
Supply voltage sampled value, if small the first predetermined voltage threshold for setting in the inner of the battery voltage sampling value, produces a low electricity
Amount warning control signal；When low battery warning control signal is received, control LED light source is dodged drive module with the first state
Sparkle to produce low battery to warn.
The circuit of existing battery protection technology is more complicated, is more expensive to manufacture, and failure is more.
The content of the invention
The technical problem to be solved in the present invention is：For the deficiency that above-mentioned existing battery protection technology is present, there is provided a kind of
When electricity is approached and exhausts terminal, discharge current is reached the obvious discharge prevention of battery and close breakpoint technique.
The technical scheme that is proposed to solve the above problems of the present invention is：A kind of low battery battery protecting circuit, anti-stop-band
The rechargeable battery for having shut-off chip is used under low battery；The protection circuit contains repid discharge loop and electric discharge monitoring loop；
The repid discharge loop is connected to the two ends of the rechargeable battery, can provide discharge channel for the rechargeable battery；It is described to put
Electric monitoring loop is connected with the repid discharge loop, controls being switched on or switched off for the discharge channel；When the rechargeable battery
Operating voltage when keeping stabilization, it is in high impedance status that the electric discharge monitoring loop controls the repid discharge loop, and electric discharge is logical
Road is disconnected, and the rechargeable battery is the load supplying of back-end circuit；When the electricity of the rechargeable battery is close exhausts terminal,
It is in low impedance state that the electric discharge monitoring loop controls the repid discharge loop, and discharge channel is switched on, and reaches discharge current
To the obvious discharge prevention shut-off point of battery.
Wherein, the repid discharge loop includes discharge diode, discharge diode, electric discharge current-limiting resistance and electric discharge biasing
Resistance；After the electric discharge current-limiting resistance is connected with the discharge diode, then colelctor electrode, emitter stage with the discharge diode
Series connection, is connected across the two ends of the rechargeable battery, and the electric discharge biasing resistor is connected to the non-series connection of the electric discharge current-limiting resistance
Between end and the base stage of the discharge diode, the repid discharge loop is constituted；It is described quick when discharge diode cut-off
Discharge loop is in high impedance；When discharge diode conducting, the repid discharge loop is in Low ESR.
Wherein, the electric discharge monitoring loop includes monitoring triode, voltage attenuation resistance and monitoring biasing resistor；The prison
The colelctor electrode for controlling triode is connected with the base stage of the discharge diode, emitter stage and the electric discharge three of the monitoring triode
The emitter stage of pole pipe is connected, and the voltage attenuation resistance is connected across the rechargeable battery after being connected with the monitoring biasing resistor
Two ends, base stage of the series connection node also with the monitoring triode is connected, and constitutes electric discharge monitoring loop；The voltage attenuation resistance with
The series connection node of the monitoring biasing resistor, is the base voltage sampled point of the monitoring triode；When the rechargeable battery
When operating voltage keeps stabilization, the monitoring triode ON；It is described when the electricity of the rechargeable battery is close exhausts terminal
Monitoring triode cut-off.
Another technical scheme of the invention is：A kind of low battery battery protecting method, prevents the charging with shut-off chip
Battery is used under low battery；A repid discharge loop is used for the rechargeable battery provides discharge channel；Supervised using an electric discharge
Discharge channel is switched on or switched off described in control circuit controls；According to the operating voltage of the rechargeable battery, the electric discharge is monitored back
Road output control signal；When the operating voltage of the rechargeable battery keeps stabilization, the electric discharge monitoring loop control is described fast
Fast discharge loop is in high impedance, and discharge channel is cut off, and battery is the load supplying of back-end circuit；When the electricity of the rechargeable battery
Measure when terminal is exhausted, it is in Low ESR that the electric discharge monitoring loop controls the repid discharge loop, and discharge channel is switched on,
Discharge current is set to reach the obvious discharge prevention shut-off point of battery.
Further, the discharge channel is switched on or switched off, and is realized by discharge diode on or off；It is described to put
Electric monitoring loop controls the discharge channel by monitoring triode ON or cut-off；Work electricity according to the rechargeable battery
Pressure, determines the on or off of the monitoring triode.
The present invention also have a technical scheme be：A kind of light fixture, can prevent battery from being used under low battery；The light fixture is used
Above-mentioned low battery battery protecting circuit.
Low battery battery protecting method of the present invention and protection circuit, using voltage monitoring, compared with prior art, using this
The technical scheme of invention mainly has the following advantages that.
1st, when battery electric quantity is approached and exhausted, discharge its dump energy, battery enters the state that can not put electricity, is carried with this
The user that wakes up charges.
2nd, in the light fixture without capacity prompt, user can be reduced when battery electric quantity is approached and consumed, is continuing with light fixture
When made troubles to work.
3rd, circuit structure is simple, and power consumption is small, and low cost of manufacture, failure is few.
Brief description of the drawings
The content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described below：
Fig. 1 is the schematic diagram of the preferred embodiment of low battery battery protecting method of the present invention and circuit.
Figure includes：Repid discharge loop 1, electric discharge monitoring loop 2, power switch SW, rechargeable battery BATTERY, electric discharge
Current-limiting resistance R3, discharge diode VD1, discharge diode TR2, electric discharge biasing resistor R2, monitoring triode TR1, voltage attenuation
Resistance R1, monitoring biasing resistor RP.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
The present invention is described in further detail to apply example.
Low battery battery protecting method of the present invention and low battery battery protecting circuit, prevent the charging electricity with shut-off chip
Pond uses under low battery.
Low battery battery protecting method is：A repid discharge loop is used for rechargeable battery provides discharge channel；Using one
Electric discharge monitoring loop controls being switched on or switched off for the discharge channel in repid discharge loop；According to the operating voltage of rechargeable battery, put
The signal in electric monitoring loop output control repid discharge loop.
Low battery battery protecting circuit contains repid discharge loop 1 and electric discharge monitoring loop 2.Repid discharge loop 1 connects
At the two ends of rechargeable battery, discharge channel can be provided for the rechargeable battery.Electric discharge monitoring loop 2 connects with repid discharge loop 1
Connect, control being switched on or switched off for discharge channel.
When the operating voltage of rechargeable battery keeps stabilization, the electric discharge control repid discharge of monitoring loop 2 loop 1 is in high impedance
State, discharge channel is disconnected, and rechargeable battery is the load supplying of back-end circuit；Terminal is exhausted when the electricity of rechargeable battery is close
When, the electric discharge control repid discharge of monitoring loop 2 loop 1 is in low impedance state, and discharge channel is switched on, and discharge current is reached electricity
The obvious discharge prevention shut-off point in pond.
Principle such as Fig. 1 institutes of the preferred embodiment of low battery battery protecting method of the present invention and low battery battery protecting circuit
Show.Being switched on or switched off for the discharge channel in repid discharge loop 1, is realized by discharge diode TR2 on or off；Electric discharge prison
The output control signal in loop 2 is controlled, is provided by monitoring triode TR1 on or off；According to the work of rechargeable battery BATTERY
Make voltage, determine the on or off of monitoring triode TR1.
Repid discharge loop 1 includes discharge diode TR2, discharge diode VD1, electric discharge current-limiting resistance R3 and electric discharge biasing
Resistance R2.Wherein, discharge diode TR2 is NPN type switch triode, and the load of back-end circuit is illuminating lamp.
After electric discharge current-limiting resistance R3 connects with discharge diode VD1, then colelctor electrode, emitter stage with discharge diode TR2
Series connection, is connected across the two ends of rechargeable battery BATTERY, and electric discharge biasing resistor R2 is connected to the non-series connection end of electric discharge current-limiting resistance R3
And the base stage of discharge diode TR2 between, the repid discharge loop 1 is constituted.The emitter stage of discharge diode TR2 is connected to charging
The negative pole of battery BATTERY, the colelctor electrode of discharge diode TR2 is connected with the negative pole of discharge diode VD1, discharge diode
The positive pole of VD1 is connected with electric discharge current-limiting resistance R3.If discharge diode TR2 ends, repid discharge loop 1 is in high impedance, electric discharge
Passage is disconnected；If discharge diode TR2 is turned on, repid discharge loop 1 is in Low ESR, electric discharge current-limiting resistance R3 and two poles of electric discharge
Pipe VD1, the colelctor electrode of discharge diode TR2, the discharge channel of emitter stage series connection are switched on.
Electric discharge monitoring loop 2 includes monitoring triode TR1, voltage attenuation resistance R1 and monitoring biasing resistor RP.Wherein, supervise
Control triode TR1 is NPN type switch triode, and monitoring biasing resistor RP is variable resistor.
The colelctor electrode of monitoring triode TR1 is connected with the base stage of discharge diode TR2, the emitter stage of monitoring triode TR1
Emitter stage with discharge diode TR2 is connected, and voltage attenuation resistance R1 is connected across charging electricity after being connected with monitoring biasing resistor R1
The two ends of pond BATTERY, base stage of the series connection node also with monitoring triode TR1 is connected, and constitutes electric discharge monitoring loop 2.Control is put
The on or off of electric triode TR2.The non-series connection end of monitoring biasing resistor RP is connected to the negative pole of rechargeable battery BATTERY.
Voltage attenuation resistance and the series connection node for monitoring biasing resistor, are the base voltage sampled point of monitoring triode TR1.
The size of the magnitude of voltage of series connection node, the on or off of control monitoring triode TR1.When the operating voltage of rechargeable battery keeps
During stabilization, the TR1 conductings of monitoring triode；When the electricity of rechargeable battery is close exhausts terminal, the TR1 cut-offs of monitoring triode.
The non-series connection end of voltage attenuation resistance R1, electric discharge biasing resistor R2 and electric discharge current-limiting resistance R3, by power switch
SW is connected to the positive pole of rechargeable battery BATTERY.
When the operating voltage of rechargeable battery BATTERY keeps stabilization, the TR1 conductings of monitoring triode, discharge diode TR2
Cut-off, rechargeable battery BATTERY powers for the illuminating lamp of back-end circuit.End is exhausted when the electricity of rechargeable battery BATTERY is close
During point, the TR1 cut-offs of monitoring triode, discharge diode TR2 conductings, repid discharge loop 1 is quickly put for rechargeable battery BATTERY
Electricity.
A kind of preferred embodiment of light fixture of the present invention, using the preferable implementation of the low battery battery protecting circuit shown in Fig. 1
The schematic diagram of example, can prevent battery from being used under low battery.
After power switch SW closures, during use, the circuit continuously monitors the work electricity of rechargeable battery BATTERY
Pressure.To rechargeable battery BATTERY electricity exhaust before, the illuminating lamp of rechargeable battery BATTERY terminal circuits backward is powered.
Voltage attenuation resistance R1 selects larger resistance, makes the electric current in its loop close to 250uA.Choose monitoring biasing resistor
The resistance of RP, makes its partial pressure when the operating voltage of rechargeable battery BATTERY keeps stabilization, can turn on monitoring triode TR1.
The drift of base stage operating voltage during to prevent from monitoring the conducting of triode TR1, monitoring biasing resistor RP can be selected can power transformation
Resistance, it is convenient to adjust its resistance in time.
When the electricity of rechargeable battery BATTERY is reduced, the voltage of rechargeable battery BATTERY also reduces.Work as rechargeable battery
BATTERY close to electricity exhaust terminal when, monitor electric conduction of the partial pressure less than monitoring triode TR1 base stages on biasing resistor RP
Pressure, the TR1 cut-offs of monitoring triode, the current potential for monitoring transistor collector is improved rapidly, so that discharge diode TR2 is turned on.
Discharge diode VD1 is turned on, further the consumption of increase electric current, reaches the obvious discharge prevention shut-offs of rechargeable battery BATTERY
Point, the illuminating lamp for stopping terminal circuit backward is powered, and prevents rechargeable battery BATTERY from being used under low battery.
Low battery battery protecting circuit of the present invention, can make rechargeable battery BATTERY's using the method for gathering cell voltage
Electricity is approached when exhausting, and discharges its dump energy, the chip shut-off in rechargeable battery BATTERY, into the shape that can not put electricity
State, reminds user to charge with this.The simple structure of the circuit, power consumption is small, and low cost of manufacture, failure is few.
In the light fixture without capacity prompt, can reduce user rechargeable battery BATTERY electricity close to consumed when, after
Made troubles to work when continuing using light fixture.
The above, only presently preferred embodiments of the present invention, are not intended to limit embodiment of the present invention, and this area is general
Logical technical staff's central scope of the invention and spirit, can very easily carry out corresponding flexible or modification, therefore originally
The protection domain of invention should be defined by the protection domain required by claims.
Claims (7)
1. a kind of low battery battery protecting circuit, prevents the rechargeable battery with shut-off chip from being used under low battery；Its feature
It is：
The protection circuit contains repid discharge loop and electric discharge monitoring loop；
The repid discharge loop is connected to the two ends of the rechargeable battery, can provide discharge channel for the rechargeable battery；
The electric discharge monitoring loop is connected with the repid discharge loop, controls being switched on or switched off for the discharge channel；
When the operating voltage of the rechargeable battery keeps stabilization, the electric discharge monitoring loop control repid discharge loop is in
High impedance status, discharge channel is disconnected, and the rechargeable battery is the load supplying of back-end circuit；
When the electricity of the rechargeable battery is close exhausts terminal, the electric discharge monitoring loop control repid discharge loop is in
Low impedance state, discharge channel is switched on, and discharge current is reached the obvious discharge prevention shut-off point of battery；
The repid discharge loop includes discharge diode, discharge diode, electric discharge current-limiting resistance and electric discharge biasing resistor；
After the electric discharge current-limiting resistance is connected with the discharge diode, then colelctor electrode, emitter stage with the discharge diode
Series connection, is connected across the two ends of the rechargeable battery, and the electric discharge biasing resistor is connected to the non-series connection of the electric discharge current-limiting resistance
Between end and the base stage of the discharge diode, the repid discharge loop is constituted；
When discharge diode cut-off, the repid discharge loop is in high impedance；It is described fast when discharge diode conducting
Fast discharge loop is in Low ESR；
The electric discharge monitoring loop includes monitoring triode, voltage attenuation resistance and monitoring biasing resistor；
It is described monitoring triode colelctor electrode be connected with the base stage of the discharge diode, it is described monitoring triode emitter stage and
The emitter stage of the discharge diode is connected, and the voltage attenuation resistance is connected across described after being connected with the monitoring biasing resistor
The two ends of rechargeable battery, base stage of the series connection node also with the monitoring triode is connected, and constitutes electric discharge monitoring loop；
The voltage attenuation resistance and the series connection node for monitoring biasing resistor, are that the base voltage of the monitoring triode is adopted
Sampling point；When the operating voltage of the rechargeable battery keeps stabilization, the monitoring triode ON；When the electricity of the rechargeable battery
Measure when terminal is exhausted, the monitoring triode cut-off.
2. according to the low battery battery protecting circuit described in claim 1, it is characterised in that：
The monitoring triode and the discharge diode are NPN type switch triode；
The emitter stage at the non-series connection end, the emitter stage of the monitoring triode and the discharge diode of the monitoring biasing resistor
It is both connected to the negative pole of the rechargeable battery；
The colelctor electrode of the discharge diode is connected with the negative pole of the discharge diode, the positive pole of the discharge diode and institute
State electric discharge current-limiting resistance connection；
The non-series connection end of the voltage attenuation resistance, the electric discharge biasing resistor and the electric discharge current-limiting resistance, by the electricity
Source switch is connected to the positive pole of the rechargeable battery.
3. according to the low battery battery protecting circuit described in claim 2, it is characterised in that：The monitoring biasing resistor is variable
Resistance.
4. according to the low battery battery protecting circuit described in claim 2, it is characterised in that：What the voltage attenuation resistance flowed through
Electric current is close to 250 μ A.
5. a kind of low battery battery protecting method, prevents the rechargeable battery with shut-off chip from being used under low battery；Its feature
It is：
A repid discharge loop is used for the rechargeable battery provides discharge channel；
Being switched on or switched off for the discharge channel is controlled using an electric discharge monitoring loop；
According to the operating voltage of the rechargeable battery, the electric discharge monitoring loop output control signal；
When the operating voltage of the rechargeable battery keeps stabilization, the electric discharge monitoring loop control repid discharge loop is in
High impedance, discharge channel is cut off, and battery is the load supplying of back-end circuit；
When the electricity of the rechargeable battery is close exhausts terminal, the electric discharge monitoring loop control repid discharge loop is in
Low ESR, discharge channel is switched on, and discharge current is reached the obvious discharge prevention shut-off point of battery.
6. according to the low battery battery protecting method described in claim 5, it is characterised in that：
Being switched on or switched off for the discharge channel, is realized by discharge diode on or off；
The electric discharge monitoring loop controls the discharge channel by monitoring triode ON or cut-off；
According to the operating voltage of the rechargeable battery, the on or off of the monitoring triode is determined.
7. a kind of light fixture, can prevent battery from being used under low battery；It is characterized in that：The light fixture band is arrived just like claim 1
Low battery battery protecting circuit described in claim 4 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310198800.4A CN104184129B (en) | 2013-05-24 | 2013-05-24 | Low battery battery protecting method and circuit and its light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310198800.4A CN104184129B (en) | 2013-05-24 | 2013-05-24 | Low battery battery protecting method and circuit and its light fixture |
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| Publication Number | Publication Date |
|---|---|
| CN104184129A CN104184129A (en) | 2014-12-03 |
| CN104184129B true CN104184129B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310198800.4A Active CN104184129B (en) | 2013-05-24 | 2013-05-24 | Low battery battery protecting method and circuit and its light fixture |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337392B (en) * | 2015-10-28 | 2018-03-20 | 邹小辉 | A kind of photovoltaic charged treasured of lithium battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031301A (en) * | 1987-07-07 | 1989-02-22 | 菲利浦光灯制造公司 | Battery-powered equipment |
| CN1937303A (en) * | 2006-09-22 | 2007-03-28 | 北京清大华美环保节能技术研究院 | Lead-acid battery detecting-repairing method and system |
| CN101183739A (en) * | 2007-10-23 | 2008-05-21 | 郑州德朗能电池有限公司 | Method for making alkaline cell chargeable and chargeable alkaline cell or battery |
| CN101710721A (en) * | 2009-10-19 | 2010-05-19 | 海洋王照明科技股份有限公司 | Power supply circuit with battery under-voltage protection function and lamp control circuit |
-
2013
- 2013-05-24 CN CN201310198800.4A patent/CN104184129B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031301A (en) * | 1987-07-07 | 1989-02-22 | 菲利浦光灯制造公司 | Battery-powered equipment |
| CN1937303A (en) * | 2006-09-22 | 2007-03-28 | 北京清大华美环保节能技术研究院 | Lead-acid battery detecting-repairing method and system |
| CN101183739A (en) * | 2007-10-23 | 2008-05-21 | 郑州德朗能电池有限公司 | Method for making alkaline cell chargeable and chargeable alkaline cell or battery |
| CN101710721A (en) * | 2009-10-19 | 2010-05-19 | 海洋王照明科技股份有限公司 | Power supply circuit with battery under-voltage protection function and lamp control circuit |
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| Publication number | Publication date |
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| CN104184129A (en) | 2014-12-03 |
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