CN103354351B - A kind of voltage protection method for single lead-acid battery - Google Patents
A kind of voltage protection method for single lead-acid battery Download PDFInfo
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- CN103354351B CN103354351B CN201310277986.2A CN201310277986A CN103354351B CN 103354351 B CN103354351 B CN 103354351B CN 201310277986 A CN201310277986 A CN 201310277986A CN 103354351 B CN103354351 B CN 103354351B
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- optocoupler components
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- detection circuit
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- 239000002253 acid Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000003381 stabilizer Substances 0.000 claims description 8
- 230000001012 protector Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Abstract
The invention discloses a kind of voltage protection method for single lead-acid battery, relate to battery protection technical field.The method adopts the protective circuit be made up of four optocoupler components and overvoltage detection circuit and Undervoltage detection circuit.During battery charging, supply voltage makes the first optocoupler components conducting, opens overvoltage detection circuit, and when battery charging voltage arrives greatly set point, the current drives second optocoupler components conducting linkage circuit in circuit disconnects charge power supply; When battery uses, voltage in load makes the 3rd optocoupler components conducting, open Undervoltage detection circuit, when cell voltage is reduced to set point, the electric current in circuit be reduced to can not maintain the 4th optocoupler components conducting linkage circuit provide warning or switching off load electric current.Advantage: only just drop into when battery charges and when using, do not participate in work in battery stand-by period, do not supply observation circuit electric current, do not produce power consumption.
Description
Technical field
The present invention relates to battery protection technical field, specifically a kind of voltage protection method for single lead-acid battery, the monomer lead acid storage battery voltage protection circuit especially only just dropped into when charging and use.
Background technology
Common battery pack does not arrange monomer battery voltage protective circuit.Even if there is the protection of this respect also mostly to adopt the method for fixing access.No matter namely battery is all working in what state (charging, stand-by, use) protection.Although it is little that protective circuit consumes electric energy, if the battery long period is in dormant state, then power consumption then should not be ignored the damage of battery.Particularly some power tool batteries, the circuit negative interaction of this long-term participation follow-up work clearly.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the invention provides a kind of voltage protection method for single lead-acid battery, just only drop into when battery charges and when using, do not participate in work in battery stand-by period, do not supply observation circuit electric current, do not produce power consumption.
The present invention realizes with following technical scheme: a kind of voltage protection method for single lead-acid battery, is parallel with charge protector and load protection circuit respectively at the two ends of lead acid accumulator; Described charge protector comprises the first optocoupler components, the second optocoupler components and the overvoltage detection circuit for detecting lead acid storage battery cell voltage; The two ends of battery are connected in parallel on the output of the first optocoupler components connects the input of the second optocoupler components by overvoltage detection circuit after, charging voltage makes the first optocoupler components open-minded, and the output of the second optocoupler components is for driving shutoff charging current;
Described load protection circuit comprises the 3rd optocoupler components, the 4th optocoupler components and the Undervoltage detection circuit for detecting lead acid storage battery cell voltage; The output of the 3rd optocoupler components is connected in parallel on the two ends of battery after connecting the input of the 4th optocoupler components by Undervoltage detection circuit, voltage in load makes the 3rd optocoupler components open-minded, and the output of the 4th optocoupler components is for driving switching off load electric current;
During battery charging, supply voltage makes the first optocoupler components conducting, opens overvoltage detection circuit, and when battery charging voltage arrives greatly set point, the current drives second optocoupler components conducting linkage circuit in circuit disconnects charge power supply;
When battery uses, voltage in load makes the 3rd optocoupler components conducting, open Undervoltage detection circuit, when cell voltage is reduced to set point, the electric current in circuit be reduced to can not maintain the 4th optocoupler components conducting linkage circuit provide warning or switching off load electric current.
The invention has the beneficial effects as follows: circuit only when battery charge, automatically follow voltage when using and drop into, have battery stand-by period not consume the beneficial effect of electric energy, avoid battery to be in long-time low discharging current dormant state, the useful life of prolongation battery.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described
Fig. 1 is principle of the invention structured flowchart;
Fig. 2 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, a kind of voltage protection method for single lead-acid battery is parallel with charge protector and load protection circuit respectively at the two ends of lead acid accumulator; Described charge protector comprises the first optocoupler components, the second optocoupler components and the overvoltage detection circuit for detecting lead acid storage battery cell voltage; The two ends of battery are connected in parallel on the output of the first optocoupler components connects the input of the second optocoupler components by overvoltage detection circuit after, charging voltage makes the first optocoupler components open-minded, and the output of the second optocoupler components is for driving shutoff charging current;
Described load protection circuit comprises the 3rd optocoupler components, the 4th optocoupler components and the Undervoltage detection circuit for detecting lead acid storage battery cell voltage; The output of the 3rd optocoupler components is connected in parallel on the two ends of battery after connecting the input of the 4th optocoupler components by Undervoltage detection circuit, voltage in load makes the 3rd optocoupler components open-minded, and the output of the 4th optocoupler components is for driving switching off load electric current;
Follow charging voltage during battery charging, drop into overvoltage detection circuit; Follow load voltage when battery uses and drop into Undervoltage detection circuit.
During battery charging, supply voltage makes the first optocoupler components conducting, opens overvoltage detection circuit, and when battery charging voltage arrives greatly set point, the current drives second optocoupler components conducting linkage circuit in circuit disconnects charge power supply.
When battery uses, voltage in load makes the 3rd optocoupler components conducting, open Undervoltage detection circuit, when cell voltage is reduced to set point, the electric current in circuit be reduced to can not maintain the 4th optocoupler components conducting linkage circuit provide warning or switching off load electric current.
As shown in Figure 2, overvoltage detection circuit and Undervoltage detection circuit all adopt reference voltage adjustable voltage stabilizer, be parallel with resistance, be parallel with adjustable resistance between anode and reference pole between the negative electrode of reference voltage adjustable voltage stabilizer and reference pole; The negative electrode of reference voltage adjustable voltage stabilizer is connected with the output of the first optocoupler components, and anode is connected with the input of the second optocoupler components.
Wherein, four optocoupler components all adopt PC817 photoelectrical coupler, and reference voltage adjustable voltage stabilizer adopts TL431 reference voltage adjustable voltage stabilizer, and adjustable resistance PR1 is 0.5 watt of 470 kilohms of multiturn potentiometer, or 0.5 watt of 430 kilohms of metal film resistor.Resistance R1 is 0.5 watt of 100 ohmic resistor.Resistance R2 is 0.5 watt of 470 ohmic resistor.Resistance R3 is 0.5 watt of 100 kilohms of metal film resistor.Adjustable resistance PR2 is 0.5 watt of 470 kilohms of multiturn potentiometer or available 0.5 watt of 240 kilohms of metal film resistor.Resistance R4 is 0.5 watt of 82 kilohms of metal film resistor.Battery E is 12 volts of maintenance-free lead accumulators.
Claims (1)
1. a voltage protection method for single lead-acid battery, is characterized in that: be parallel with charge protector and load protection circuit respectively at the two ends of lead acid accumulator; Described charge protector comprises the first optocoupler components, the second optocoupler components and the overvoltage detection circuit for detecting lead acid storage battery cell voltage; The two ends of battery are connected in parallel on the output of the first optocoupler components connects the input of the second optocoupler components by overvoltage detection circuit after, charging voltage makes the first optocoupler components open-minded, and the output of the second optocoupler components is for driving shutoff charging current;
Described load protection circuit comprises the 3rd optocoupler components, the 4th optocoupler components and the Undervoltage detection circuit for detecting lead acid storage battery cell voltage; The output of the 3rd optocoupler components is connected in parallel on the two ends of battery after connecting the input of the 4th optocoupler components by Undervoltage detection circuit, voltage in load makes the 3rd optocoupler components open-minded, and the output of the 4th optocoupler components is for driving switching off load electric current;
During battery charging, supply voltage makes the first optocoupler components conducting, opens overvoltage detection circuit, and when battery charging voltage arrives greatly set point, the current drives second optocoupler components conducting linkage circuit in circuit disconnects charge power supply;
When battery uses, voltage in load makes the 3rd optocoupler components conducting, open Undervoltage detection circuit, when cell voltage is reduced to set point, the electric current in circuit be reduced to can not maintain the 4th optocoupler components conducting linkage circuit provide warning or switching off load electric current;
Described overvoltage detection circuit and Undervoltage detection circuit all adopt reference voltage adjustable voltage stabilizer, be parallel with resistance, be parallel with adjustable resistance between anode and reference pole between the negative electrode of reference voltage adjustable voltage stabilizer and reference pole; The negative electrode of reference voltage adjustable voltage stabilizer is connected with the output of the first optocoupler components, and anode is connected with the input of the second optocoupler components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277986.2A CN103354351B (en) | 2013-07-04 | 2013-07-04 | A kind of voltage protection method for single lead-acid battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277986.2A CN103354351B (en) | 2013-07-04 | 2013-07-04 | A kind of voltage protection method for single lead-acid battery |
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| Publication Number | Publication Date |
|---|---|
| CN103354351A CN103354351A (en) | 2013-10-16 |
| CN103354351B true CN103354351B (en) | 2015-12-02 |
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| CN201310277986.2A Active CN103354351B (en) | 2013-07-04 | 2013-07-04 | A kind of voltage protection method for single lead-acid battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105743188B (en) * | 2016-05-13 | 2018-03-20 | 信阳师范学院 | Lead-acid battery group protects system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075667A (en) * | 2006-05-16 | 2007-11-21 | 有量科技股份有限公司 | Lithium-cell protector and its protection |
| CN101414749A (en) * | 2008-12-09 | 2009-04-22 | 李鹏 | Protection device for rechargeable battery set |
| CN101795010A (en) * | 2009-12-31 | 2010-08-04 | 惠州市亿能电子有限公司 | Lithium battery protection circuit and protection method thereof |
| CN202930922U (en) * | 2012-11-30 | 2013-05-08 | 深圳Tcl新技术有限公司 | Lithium battery protective circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5488877B2 (en) * | 2009-09-17 | 2014-05-14 | 日立工機株式会社 | Electric tool |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075667A (en) * | 2006-05-16 | 2007-11-21 | 有量科技股份有限公司 | Lithium-cell protector and its protection |
| CN101414749A (en) * | 2008-12-09 | 2009-04-22 | 李鹏 | Protection device for rechargeable battery set |
| CN101795010A (en) * | 2009-12-31 | 2010-08-04 | 惠州市亿能电子有限公司 | Lithium battery protection circuit and protection method thereof |
| CN202930922U (en) * | 2012-11-30 | 2013-05-08 | 深圳Tcl新技术有限公司 | Lithium battery protective circuit |
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| CN103354351A (en) | 2013-10-16 |
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