CN103354349A - Novel lithium-battery low voltage start charging method and charging protection circuit - Google Patents
Novel lithium-battery low voltage start charging method and charging protection circuit Download PDFInfo
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- CN103354349A CN103354349A CN2013102406782A CN201310240678A CN103354349A CN 103354349 A CN103354349 A CN 103354349A CN 2013102406782 A CN2013102406782 A CN 2013102406782A CN 201310240678 A CN201310240678 A CN 201310240678A CN 103354349 A CN103354349 A CN 103354349A
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Abstract
The invention aims at providing a novel lithium-battery low voltage start charging method. The method comprises the following steps that 1) a critical point of a charging voltage is set for a lithium battery monomer; 2) during a discharging process, a protection plate detects an output signal of the lithium battery monomer; 3) based on whether the signal is output, whether to charge a charger is determined. A novel lithium battery charging protection circuit comprises a battery pack formed by the plurality of lithium battery monomers. Each lithium battery monomer is connected with an electronic switch. A voltage value between an anode and a cathode of each lithium battery monomer is used to control whether the lithium battery monomer outputs. The method and the circuit of the invention has the advantages that by using the above technology scheme, when the voltage of the lithium battery is greater than or equal to the critical point of a charging voltage, the charging is performed so that a problem can be solved; performance can be recovered and a hidden trouble of safety does not generated.
Description
Technical field
The present invention relates to the lithium battery charge and discharge protective technical field, relate in particular to a kind of novel lithium battery low-voltage and rise and fill method and charge protector.
Background technology
Lithium battery is in normal use procedure, and it is inner, and the chemical positive reaction that electric energy and chemical energy transform mutually occurs.When under certain conditions, if to its overcharge, overdischarge or overcurrent will cause inside battery generation chemical side reactions, after this side reaction occurs, can have a strong impact on performance and the useful life of battery, and may produce a large amount of gases, make cell internal pressure increase after-explosion rapidly and cause safety problem.Therefore, all lithium batteries all are equipped with a protective circuit, are used for the charge and discharge of battery are effectively monitored, and turn-off under certain conditions the charge and discharge loop and damage to prevent battery.
In the prior art; even so; in the middle of actual use procedure; when baffle is judged discharge loop; still (such as the performance reason of itself and the reason of protective circuit) causes the lithium battery discharge capacity to increase to understand some battery because the reason of each side, to such an extent as to the voltage of lithium battery is close to 0V.Existing two kinds of processing methods have: 1, battery protecting plate can think that this battery cancels, and makes it can not charge and discharge circulation again; 2, the charger of leaving charges to it, and in this case, because the special construction of lithium battery, when the 0V such as cell voltage, the inside battery copper sheet can melt, and as continuing its charging, can cause potential safety hazard.
Summary of the invention
For the problems referred to above, the problem to be solved in the present invention provides a kind of novel lithium battery low-voltage and rises and fill method and protective circuit.
Technical scheme of the present invention is as follows:
A kind of novel lithium battery low-voltage rises fills method, comprises the steps:
1) faces Jie's point for what the lithium battery monomer was set charging voltage;
2) in the discharge process, baffle detects the output signal of lithium battery monomer;
3) according to output signal whether, whether charger is charged judge.
In the described step 2, when the voltage of lithium battery monomer was put less than being situated between facing of charging voltage, the lithium battery monomer stopped output signal.
Whether a kind of novel lithium battery charge protector comprises the battery pack by a plurality of lithium battery monomer compositions, connects an electronic switch on each described lithium battery monomer, exported by the control of the magnitude of voltage between lithium battery monomer both positive and negative polarity lithium battery monomer.
Further, described electronic switch is triode, and the base stage of triode connects the negative pole of lithium battery monomer, and the emitter of triode connects the positive pole of lithium battery monomer, and the collector electrode of triode connects output unit.
Further, described electronic switch is metal-oxide-semiconductor, and the grid of metal-oxide-semiconductor connects the negative pole of lithium battery monomer, and the source electrode of metal-oxide-semiconductor connects the positive pole of lithium battery monomer, and the drain electrode of metal-oxide-semiconductor connects output unit.
Beneficial effect of the present invention is: owing to adopt technique scheme, guarantee when lithium battery voltage is situated between point more than or equal to facing of charging voltage it to be charged, just can well address the above problem, make it can restorability, potential safety hazard can not occur again.
Description of drawings,
Fig. 1 is the schematic diagram of novel lithium battery charge protector of the present invention.
Embodiment
Below in conjunction with accompanying drawing a kind of preferred embodiment of the present invention is made brief description.
As shown in Figure 1:
A kind of novel lithium battery low-voltage rises fills method, comprises the steps:
1) faces Jie's point for what the lithium battery monomer was set charging voltage;
2) in the discharge process, baffle detects the output signal of lithium battery monomer;
3) according to output signal whether, whether charger is charged judge.
In the described step 2, when the voltage of lithium battery monomer was put less than being situated between facing of charging voltage, the lithium battery monomer stopped output signal.
As shown in Figure 1; a kind of novel lithium battery charge protector; comprise the battery pack by a plurality of lithium battery monomer compositions; connect an electronic switch on each described lithium battery monomer; described electronic switch is triode Q1; the base stage of triode Q1 connects the negative pole of lithium battery monomer, and the emitter of triode Q1 connects the positive pole of lithium battery monomer, and the collector electrode of triode Q1 connects output unit.
When the voltage between the both positive and negative polarity of lithium battery monomer during less than the conducting voltage of triode Q1, the collector electrode output signal 0 of triode Q1.
Wherein, the another kind of execution mode of electronic switch is for being metal-oxide-semiconductor, and the grid of metal-oxide-semiconductor connects the negative pole of lithium battery monomer, and the source electrode of metal-oxide-semiconductor connects the positive pole of lithium battery monomer, and the drain electrode of metal-oxide-semiconductor connects output unit.
When the voltage between the both positive and negative polarity of lithium battery monomer during less than the conducting voltage between metal-oxide-semiconductor grid and the source electrode, the source electrode of metal-oxide-semiconductor and drain electrode disconnect output signal 0.
More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (4)
1. a novel lithium battery low-voltage rises and fills method, it is characterized in that: comprise the steps:
1) faces Jie's point for what the lithium battery monomer was set charging voltage;
2) in the discharge process, baffle detects the output signal of lithium battery monomer;
3) according to output signal whether, whether charger is charged judge;
In the described step 2, when the voltage of lithium battery monomer was put less than being situated between facing of charging voltage, the lithium battery monomer stopped output signal.
2. novel lithium battery charge protector; comprise the battery pack by a plurality of lithium battery monomer compositions; it is characterized in that: connect an electronic switch on each described lithium battery monomer, whether exported by the control of the magnitude of voltage between lithium battery monomer both positive and negative polarity lithium battery monomer.
3. novel lithium battery charge protector according to claim 2; it is characterized in that: described electronic switch is triode; the base stage of triode connects the negative pole of lithium battery monomer, and the emitter of triode connects the positive pole of lithium battery monomer, and the collector electrode of triode connects output unit.
4. novel lithium battery charge protector according to claim 2, it is characterized in that: described electronic switch is metal-oxide-semiconductor, and the grid of metal-oxide-semiconductor connects the negative pole of lithium battery monomer, and the source electrode of metal-oxide-semiconductor connects the positive pole of lithium battery monomer, and the drain electrode of metal-oxide-semiconductor connects output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102406782A CN103354349A (en) | 2013-06-17 | 2013-06-17 | Novel lithium-battery low voltage start charging method and charging protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102406782A CN103354349A (en) | 2013-06-17 | 2013-06-17 | Novel lithium-battery low voltage start charging method and charging protection circuit |
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| CN103354349A true CN103354349A (en) | 2013-10-16 |
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| CN2013102406782A Pending CN103354349A (en) | 2013-06-17 | 2013-06-17 | Novel lithium-battery low voltage start charging method and charging protection circuit |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996021954A1 (en) * | 1995-01-09 | 1996-07-18 | Motorola Inc. | Apparatus for simulating high battery temperature used in recharging lithium ion cells |
| CN201038807Y (en) * | 2007-01-26 | 2008-03-19 | 东莞市迈科科技有限公司 | Column type lithium ion battery charger |
| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
-
2013
- 2013-06-17 CN CN2013102406782A patent/CN103354349A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996021954A1 (en) * | 1995-01-09 | 1996-07-18 | Motorola Inc. | Apparatus for simulating high battery temperature used in recharging lithium ion cells |
| CN201038807Y (en) * | 2007-01-26 | 2008-03-19 | 东莞市迈科科技有限公司 | Column type lithium ion battery charger |
| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
Non-Patent Citations (1)
| Title |
|---|
| 陈超等: "电动汽车车载锂电池分段充电策略研究", 《机电工程》, vol. 28, no. 7, 31 July 2011 (2011-07-31) * |
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Application publication date: 20131016 |