CN100550571C - A kind of method of battery charge - Google Patents
A kind of method of battery charge Download PDFInfo
- Publication number
- CN100550571C CN100550571C CNB200610115452XA CN200610115452A CN100550571C CN 100550571 C CN100550571 C CN 100550571C CN B200610115452X A CNB200610115452X A CN B200610115452XA CN 200610115452 A CN200610115452 A CN 200610115452A CN 100550571 C CN100550571 C CN 100550571C
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- CN
- China
- Prior art keywords
- battery
- power supply
- microcontroller
- battery pack
- supply unit
- Prior art date
- 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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- 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
Abstract
The invention provides a kind of method of battery charge, the size that it cooperates microcontroller and series connection divider resistance control charge power supply makes each battery can both reach the optimal charge effect.The present invention utilizes microcontroller to detect total terminal voltage of battery pack by the series connection divider resistance, and after each battery is finished first round charging in battery pack, utilize microcontroller order power supply unit to reduce the charging current of output, again batteries in battery set is done second and take turns charging, a preset times so circulates.Whereby, each battery all can be charged to optimum state in the series-connected cell that is recharged.
Description
Technical field
The invention relates to a kind of method of battery charge, refer to a kind ofly when power supply unit charges to a multi-section serial battery especially, cooperate microcontroller and series connection divider resistance, make each battery can both reach the method for optimal charge effect.
Background technology
Along with digital camera, PDA, MP3 ... wait the demand of portable type electronic product to increase day by day, also bigger for the requirement of chargeable battery capacity, also shorter for the requirement in charging interval, in addition, also require more frivolous for the volume of charger.Therefore, a kind of volume is little again can quick charge and long charger of cheap life-span, seemingly developing tendency in future.
Present existing battery charger uses the CC/CV mode to charge mostly.Wherein, CC is meant with constant current battery charge; CV is meant with constant voltage battery charge.And the CC/CV mode is charged and is the method that adopts constant current and constant voltage to combine, to a kind of charging modes of battery or battery pack.
Also there is small part to adopt so-called pulse current charge mode now, promptly use constant current to battery charge, and the charging voltage state of inspection battery-end, increase or reduce a pulse wave width modulation signal according to this charging voltage state again, the output valve of adjusting the charging interval with control at any time reaches the charging average current that can dynamically adjust this battery to battery.
Yet, many with the CC/CV mode required test point that charges, and require detector to have high precision, cause cost significantly to improve.And pulse mode is charged when the later stage enters the pulse mode charging, and is very high to battery cell protection I C requirement, and circuit constitutes comparatively complicated, quite not convenient.
Therefore, how inventing out a kind of method of battery charge, so that charging circuit is simplified, reduce cost, and improve the precision of battery charge, will be that the present invention desires actively to inquire into part.
Summary of the invention
The inventor is because the shortcoming of aforementioned prior art, be manufacturing experience and the technology accumulation of being engaged in various chargers according to it, method at the various solutions of the concentrated research of above-mentioned disappearance, after through constantly research, experiment and improvement, finally development and Design goes out the method for a kind of battery charge of the present invention, in the hope of the disappearance that prior art produced of forgoing.
Main purpose of the present invention is that a kind of method of battery charge is being provided, and it is by using microcontroller and series connection divider resistance, and then reaches and significantly simplify circuit, reduces cost, and improves the purpose of battery charge precision.
According to above-mentioned purpose, the method for a kind of battery charge of the present invention comprises:
(1) a plurality of batteries is composed in series a battery pack, and this battery pack is connected with a power supply unit;
(2) one first divider resistance is connected with one second divider resistance form a series connection divider resistance, and make this series connection divider resistance in parallel with this battery pack;
(3) microcontroller is connected with this power supply unit, and this microcontroller is in parallel with this second divider resistance;
(4) make this microcontroller send one first and control signal to this power supply unit, make this power supply unit provide a constant charge current to this battery pack;
(5) when arbitrary battery of these batteries in this battery pack is charged to one first predeterminated voltage value, this battery pack is cut off a charge circuit that should battery;
(6) make this microcontroller detect total terminal voltage value of this battery pack by this series connection divider resistance, when this magnitude of voltage less than one second predeterminated voltage value or when receiving from the output signal of this battery pack full for filling (FULL), make this microcontroller export extremely respectively this charge circuit of a reset signal, making respectively, this charge circuit recloses; And
(7) whether the output number of times of judging this reset signal has reached a default value, in this way, make this microcontroller cut off the power supply of this power supply unit, stop charging, as denying, make this microcontroller export one second and control signal to this power supply unit, make this power supply unit reduce this constant charge current, and get back to step (4).
Whereby, charging circuit is simplified, reduced cost, and improve the precision of battery charge.
Description of drawings
Fig. 1 is a preferred embodiment schematic diagram of the method according to this invention.
Fig. 2 is a method flow schematic diagram of the present invention.
Symbol description:
1, battery pack
2, power supply unit
3, start/shutdown circuit
4, microcontroller
5, reset signal
R1, first divider resistance
R2, second divider resistance
P+, P-, magnitude of voltage
Embodiment
For making purpose of the present invention, method feature and effect thereof, do further understanding and understand, cooperate graphicly now for embodiment, be described in detail as follows:
Fig. 1 is a preferred embodiment schematic diagram of the method according to this invention, as shown in the figure, at first a plurality of batteries are composed in series a battery pack 1, and (for example: a stepped charge-variable device or a linear variable charger with this battery pack 1 and a power supply unit 2, but be not limited thereto) series connection, wherein, each battery can be a high capacity capacitor or a lithium battery.In addition, one first divider resistance R1 connects with one second divider resistance R2 and forms a series connection divider resistance, and makes this series connection divider resistance in parallel with battery pack 1.One microcontroller 4 that then will comprise analog/digital converter (figure does not show) is connected with power supply unit 2, and the microcontroller 4 that will contain analog/digital converter (figure does not show) is in parallel with this second divider resistance R2, and microcontroller 4 can be learnt total terminal voltage value of battery pack 1 by the second divider resistance R2.Microcontroller 4 (for example: a logical value sends one first control signal then, but be not limited thereto) to power supply unit 2, make power supply unit 2 that a constant charge current is provided, charge power supply does not flow into this battery, changes by the bypass in parallel with this battery to flow into next battery.Microcontroller 4 is by a magnitude of voltage P+, the P-of series connection divider resistance detecting battery pack 1, as magnitude of voltage P+, P-during less than one second predeterminated voltage value or when to receive Full output signal from this battery pack 1 be effective, (for example: a logical value make microcontroller 4 outputs one reset signal 5, but be not limited thereto) to each charge circuit (figure does not show), each charge circuit (figure does not show) is reclosed.Whether the output number of times of judging reset signal 5 has then reached a default value, in this way, make microcontroller 4 see through the cut off the electricity supply power supply of supply 2 of start/shutdown circuit 3, stop charging,, (for example: a logical value make microcontroller 4 outputs one second control signal as not, but be not limited thereto) to power supply unit 2, make power supply unit 2 reduce the constant current source output valve, again to the battery charge in the battery pack 1, so cycle charging makes battery be charged to optimum state.
Fig. 2 is a method flow schematic diagram of the present invention, cooperates shown in Figure 1ly, and wherein this method may further comprise the steps:
(1) a plurality of batteries are composed in series a battery pack 1, and with this battery pack 1 and a power supply unit 2 (for example: a stepped charge-variable device or a linear variable charger, but be not limited thereto) series connection;
(2) one first divider resistance R1 is connected with one second divider resistance R2 form a series connection divider resistance, and make this series connection divider resistance in parallel with battery pack 1;
(3) microcontroller 4 that will contain digital/analog converter (figure do not show) is connected with power supply unit 2, and microcontroller 4 is in parallel with this second divider resistance R2, and microcontroller 4 can be learnt total terminal voltage value of this battery pack by the second divider resistance R2;
(4) making microcontroller 4 send one first control signal (for example: a logical value, but be not limited thereto) to power supply unit 2, makes power supply unit 2 that a constant charge current is provided;
(5) when arbitrary battery of these batteries in the battery pack is charged to one first predeterminated voltage value, battery pack is cut off a charge circuit (figure does not show) of corresponding this battery, total terminal voltage value will reduce the voltage of a batteries this moment, charge power supply does not flow into this battery, changes by the bypass in parallel with this battery to flow into next battery;
(6) make total terminal voltage value P+, the P-of microcontroller 4 by series connection divider resistance detecting battery pack 1, when magnitude of voltage P+, P-less than one second predeterminated voltage value or when receiving from the output signal of this battery pack 1 full for filling (FULL), (for example: a logical value make microcontroller 4 outputs one reset signal 5, but be not limited thereto) to each charge circuit (figure does not show), each charge circuit (figure does not show) is reclosed; And
(7) whether the output number of times of judging reset signal 5 has reached a default value, in this way, make microcontroller 4 see through the cut off the electricity supply power supply of supply 2 of start/shutdown circuit 3, stop charging, as not, make microcontroller 4 outputs one second control signal (for example: a logical value, but be not limited thereto) to power supply unit 1, make power supply unit 1 reduce constant charge current, and get back to step (4).
The above only be the best specific embodiment of the present invention, but structural feature of the present invention is not limited thereto, and anyly is familiar with this skill person in field of the present invention, can think easily and variation or modification, all can be encompassed in the claim of this case.
Claims (8)
1, a kind of method of battery charge, this method comprises:
(1) a plurality of batteries is composed in series a battery pack, and this battery pack is connected with a power supply unit;
(2) one first divider resistance is connected with one second divider resistance form a series connection divider resistance, and make this series connection divider resistance in parallel with this battery pack;
(3) output connecting pin with a microcontroller is connected with the control pin of this power supply unit, and this microcontroller is in parallel with this second divider resistance;
(4) make this microcontroller send one first and control signal to this power supply unit, make this power supply unit provide a constant charge current to this battery pack;
(5) when arbitrary battery of described battery in this battery pack is charged to one first predeterminated voltage value, this battery pack is cut off a charge circuit that should battery;
(6) make this microcontroller detect a magnitude of voltage of this battery pack by this series connection divider resistance, when this magnitude of voltage less than one second predeterminated voltage value or receive when satisfying for filling from the output signal of this battery pack, make this microcontroller export extremely respectively this charge circuit of a reset signal, make respectively this charge circuit connection; And
(7) whether the output number of times of judging this reset signal has reached a default value, in this way, make this microcontroller cut off the power supply of this power supply unit, stop charging, as denying, make this microcontroller export one second and control signal to this power supply unit, make this power supply unit reduce this constant charge current, and get back to step (4).
2, method according to claim 1, wherein, respectively this battery is a capacitor or a lithium battery.
3, method according to claim 1, wherein, this power supply unit is the variable output current of a stepped source charger or a linear variable output current source charger.
4, method according to claim 1, wherein, this reset signal is a logical value.
5, method according to claim 1, wherein, this first control signal is a logical value.
6, method according to claim 1, wherein, this second control signal is a logical value.
7, method according to claim 1, wherein, this microcontroller comprises an analog/digital converter.
8, method according to claim 1, wherein, this constant charge current is provided by the constant current power supply that can set electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610115452XA CN100550571C (en) | 2006-08-10 | 2006-08-10 | A kind of method of battery charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610115452XA CN100550571C (en) | 2006-08-10 | 2006-08-10 | A kind of method of battery charge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101123362A CN101123362A (en) | 2008-02-13 |
| CN100550571C true CN100550571C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610115452XA Expired - Fee Related CN100550571C (en) | 2006-08-10 | 2006-08-10 | A kind of method of battery charge |
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| CN (1) | CN100550571C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102652265A (en) | 2010-12-06 | 2012-08-29 | 科达汽车公司 | Measuring isolated high voltage and detecting isolation breakdown with measures for self-detection of circuit faults |
| CN103515658B (en) * | 2012-06-29 | 2016-10-05 | 联想(北京)有限公司 | Rechargeable battery cell and charging management method |
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2006
- 2006-08-10 CN CNB200610115452XA patent/CN100550571C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101123362A (en) | 2008-02-13 |
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