CN201178325Y - Quick charging controller for battery - Google Patents
Quick charging controller for battery Download PDFInfo
- Publication number
- CN201178325Y CN201178325Y CN 200820031952 CN200820031952U CN201178325Y CN 201178325 Y CN201178325 Y CN 201178325Y CN 200820031952 CN200820031952 CN 200820031952 CN 200820031952 U CN200820031952 U CN 200820031952U CN 201178325 Y CN201178325 Y CN 201178325Y
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- Prior art keywords
- battery
- charging
- charging current
- current
- circuit
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Abstract
The utility model discloses a battery quick-charging controller based on the principle of the DC charging measurement. A controllable charging current circuit provides a charging current to a battery or a battery pack to be charged. A current detection circuit, a voltage detection circuit and a temperature detection circuit are connected with a monolithic computer. The monolithic computer calculates the internal resistance of the battery at the moment according to the voltage variation at the instant of the charging current variation, outputs the controlled quantity of the charging current according to the range of the internal resistance and the established regulation strategy, and also determines whether the quick-charging process is finished according to whether the measured temperature of the battery surface is beyond a set value or the battery charging voltage continuously appears minus Delta U. The controller has the advantages of safety, rapidness and high-efficiency charging, and can effectively prolong the service life of a secondary battery, and improve the utilization ratio of the secondary battery.
Description
Technical field
The utility model relates to the internal resistance variable condition that a kind of employing " DC charging mensuration " detected and judged secondary cell, realizes the secondary cell quick charge controller of safety, quick charge.Specifically a kind of quickly charging battery controller based on " DC charging mensuration " principle.
Background technology
Along with a large amount of of portable type electronic product and electric vehicle popularize, change to " key " parts from " supporting role " in past as the role of the secondary cell that electric power energy is provided to them.Simultaneously, because the continuity that these products and instrument use needs, the safety of secondary cell, quick charge The Application of Technology then seem important all the more.Yet present employed fast charge mode has certain limitation.Particularly when part service time long secondary cell when internal resistance is bigger than normal, in case adopt big electric current quick charge, then can produce bigger overshoot current, cause the charging failure and can not use, cause unnecessary waste.Therefore, designing quick charge device a kind of simple possible, regulate charge parameter according to the internal state of battery seems with the charging demand that satisfies various state batteries and is even more important.Also there is not this simple and effective charge controller at present on the market.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of quickly charging battery controller based on " DC charging mensuration " principle.This charge controller adopts " DC charging mensuration " detection and judges the internal resistance variable condition of secondary cell, and regulates charging current according to the size reasonable of the internal resistance of cell, realizes safety, quick charge.
The purpose of this utility model is achieved through the following technical solutions:
A kind of quickly charging battery controller, comprise controlled charging current circuit, current detection circuit, voltage detecting circuit, temperature sensing circuit, monolithic computer and battery or battery pack, controlled charging current circuit under the control of single-chip microcomputer to being recharged battery or battery pack provides charging current; Current detection circuit is used to measure and the charging current value of being regulated is provided to monolithic computer; Voltage detecting circuit is used to detect the instantaneous voltage at battery or battery pack two ends and send monolithic computer to; Temperature sensing circuit then is used to measure the surface temperature of battery or battery pack and sends monolithic computer to; Monolithic computer then changes caused battery terminal voltage situation of change of moment according to charging current, calculates the increment of charging current correction and according to the value of the feedback signal regulating cell charging current of current detection circuit; Surpass the situation of charging voltage certain time appearances-Δ U's or battery pack the temperature of higher limit or battery or battery pack when the temperature of battery or battery pack simultaneously above the charging voltage certain time appearance-Δ U of higher limit or battery or battery pack, then finish quick charge, and make charging current I
n=I
Small, change trickle charge into.
The utility model adopts monolithic computer as core control part, when changing charging current, measure, calculate and analyze the charged state of secondary cell, obtain the size of the internal resistance of cell this moment by the variation that detects secondary cell voltage, and realize the Optimal Control of quick charge according to the internal state of battery.
The course of work of the present utility model is as follows:
1) battery or battery pack with a certain electric current I charging process in, the moment charging current Δ I that superposes, be that charging current becomes I+ Δ I, the electric current of this stack produces a voltage increment Δ U=U2-U1 in the internal resistance of battery, measure the voltage U 1 and the U2 at charging current stack front and back battery or battery pack two ends;
2) calculate voltage increment Δ U=U2-U1 according to measured voltage U 1 and U2, obtain internal resistance of cell R this moment by Δ I and Δ U
iValue: R
i=(U2-U1)/(I+ Δ I-I)=Δ U/ Δ I.
3) according to the internal resistance of cell currency of measuring and calculating, determining to increase still is the value that keeps charging current, and determines charging current I the n time according to following fuzzy control rule
nThe adjusting strategy:
If the internal resistance R that measures for the n-1 time
N-1For greatly, promptly 30% of the measured value value of being above standard, I then
n=I
N-1
If the internal resistance R that measures for the n-1 time
N-1For bigger, promptly the measured value value of being above standard between 1%～30%, I then
n=I
N-1+ I
d, I wherein
dBe the current unit increment;
If the internal resistance R that measures for the n-1 time
N-1For not quite, promptly measured value in standard value allows fluctuation range, I then
n=I
N-1+ kI
d, (k=2,3,4);
If continuous three measured internal resistance R
N-3, R
N-2And R
N-1All little, I then
n=I
Max, I wherein
MaxBe maximum charging current;
4) by realize the optimum Working of quick charge with the adjusted strategy.
The utility model adopts monolithic computer as controller, measures, calculates and analyze the charged state of secondary cell, the charging current of control and regulating cell; If battery or battery surface temperature surpass the voltage of set point or battery or batteries charging and occur continuously-Δ U, then make I
n=I
Small, finish quick charge, change trickle charge into, wherein I
SmallBe 0.05C.
The utility model has the advantages that: 1, can calculate the variable quantity of internal resistance of rechargeable battery fast, to determine suitable charging current, easy, the safety of method; 2, can effectively charge to internal resistance secondary cell bigger than normal, can prolong the useful life of secondary cell.
The utility model safety, economic, practical and realization easily.
Description of drawings
Fig. 1 is a circuit structure block diagram of the present utility model;
Transient voltage when Fig. 2 is DC charging and electric current change waveform.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Controlled charging current circuit 1 under the control of single-chip microcomputer 5 to being recharged battery or battery pack 6 provides charging current; Current detection circuit 2 is used to measure and provides the charging current value of being regulated to monolithic computer 5; Voltage detecting circuit 3 is used to detect the instantaneous voltage at battery or battery pack 6 two ends and send monolithic computer 5 to; 4 of temperature sensing circuits are used to measure the surface temperature of battery or battery pack 6 and send monolithic computer 5 to; 5 of monolithic computers change caused battery terminal voltage situation of change of moment according to charging current, calculate the increment of charging current correction and according to the value of the feedback signal regulating cell charging current of current detection circuit; Surpass the situation of the charging voltage certain time appearance-Δ U of higher limit or battery or battery pack simultaneously when the temperature of battery or battery pack 6, then finish quick charge, and make charging current I
n=I
Small, change trickle charge into.
The quickly charging battery controller adopts monolithic computer as core control part, measure, calculate and analyze the charged state of secondary cell, control is also regulated the charging current of secondary cell and is determined whether to finish quick charge, thereby realizes safe, fast, efficient charging.
Transient voltage when accompanying drawing 2 is DC charging and electric current change waveform.During beginning, monolithic computer is controlled controlled charging current circuit and with a certain electric current I secondary cell is charged, then, and every interval certain hour charging current increment Delta I that superposes, the electric current of this stack will produce a voltage increment Δ U=U2-U1 in the internal resistance of battery, as Fig. 2.
Can approximate calculation go out the current DC internal resistance Ri of battery by formula: R ≈ (U2-U1)/(I+ Δ I-I)=Δ U/ Δ I.According to the size of the internal resistance of cell of being obtained, determine the adjusting strategy of charging current In next time then:
If the internal resistance R that measures for the n-1 time
N-1For greatly, I then
n=I
N-1
If the internal resistance R that measures for the n-1 time
N-1For bigger, I then
n=I
N-1+ I
d, I wherein
dBe the current unit increment;
If the internal resistance R that measures for the n-1 time
N-1For not quite, I then
n=I
N-1+ kI
d, (k=2,3,4);
If continuous three measured internal resistance R
N-3, R
N-2And R
N-1All little, I then
n=I
Max, I wherein
MaxBe maximum charging current.
The utility model adopts monolithic computer as controller, measures, calculates and analyze the charged state of secondary cell, the charging current of control and regulating cell; If battery or battery surface temperature surpass the voltage of set point or battery or batteries charging and occur continuously-Δ U, then make In=I
SmallFinish quick charge, change trickle charge into, wherein I
SmallBe 0.05C.
Prove that by experiment the utility model not only can be realized internal resistance battery bigger than normal is carried out quick charge control, can also in time find the storage battery of deterioration (internal resistance is excessive), the potential hidden danger of eliminating storage battery (or batteries).The utility model test is simple, convenience of calculation, be easy to realize, can improve the availability factor of battery effectively, is applicable to that commercialization uses and promote.
Claims (2)
1, a kind of quickly charging battery controller is characterized in that: it comprises controlled charging current circuit (1), current detection circuit (2), voltage detecting circuit (3), temperature sensing circuit (4), monolithic computer (5) and battery or battery pack (6); One end of controlled charging current circuit (1) is connected with battery or battery pack (6), and the other end is connected with monolithic computer (5); One end of current detection circuit (2), voltage detecting circuit (3) and temperature sensing circuit (4) all is connected with monolithic computer (5), and the other end all is connected with battery or battery pack (6).
2, quickly charging battery controller according to claim 1, it is characterized in that: monolithic computer (5) finishes quick charge under the situation of temperature above the charging voltage certain time appearance-Δ U of capping value or battery or battery pack of battery or battery pack (6); And make charging current In=I
Small, change trickle charge into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820031952 CN201178325Y (en) | 2008-03-05 | 2008-03-05 | Quick charging controller for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820031952 CN201178325Y (en) | 2008-03-05 | 2008-03-05 | Quick charging controller for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178325Y true CN201178325Y (en) | 2009-01-07 |
Family
ID=40218347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820031952 Expired - Fee Related CN201178325Y (en) | 2008-03-05 | 2008-03-05 | Quick charging controller for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201178325Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617344A (en) * | 2015-01-15 | 2015-05-13 | 广东小天才科技有限公司 | Method and equipment for shortening charging time |
| CN105429258A (en) * | 2015-12-30 | 2016-03-23 | 上海广为美线电源电器有限公司 | Charger capable of automatically adjusting charging current and charging method |
| CN107104477A (en) * | 2017-03-27 | 2017-08-29 | 深圳市鑫彩翼科技有限公司 | A kind of battery charge intelligence control system and method |
| CN112104030A (en) * | 2020-09-10 | 2020-12-18 | 江西省倍特力新能源有限责任公司 | Power management system and control method |
| CN112636408A (en) * | 2020-12-09 | 2021-04-09 | 佛山市顺德区冠宇达电源有限公司 | Battery charging circuit and charger |
-
2008
- 2008-03-05 CN CN 200820031952 patent/CN201178325Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617344A (en) * | 2015-01-15 | 2015-05-13 | 广东小天才科技有限公司 | Method and equipment for shortening charging time |
| CN105429258A (en) * | 2015-12-30 | 2016-03-23 | 上海广为美线电源电器有限公司 | Charger capable of automatically adjusting charging current and charging method |
| CN107104477A (en) * | 2017-03-27 | 2017-08-29 | 深圳市鑫彩翼科技有限公司 | A kind of battery charge intelligence control system and method |
| CN112104030A (en) * | 2020-09-10 | 2020-12-18 | 江西省倍特力新能源有限责任公司 | Power management system and control method |
| CN112636408A (en) * | 2020-12-09 | 2021-04-09 | 佛山市顺德区冠宇达电源有限公司 | Battery charging circuit and charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20120305 |