CN101420054A - Battery charging method and device thereof - Google Patents
Battery charging method and device thereof Download PDFInfo
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- CN101420054A CN101420054A CNA2008100809576A CN200810080957A CN101420054A CN 101420054 A CN101420054 A CN 101420054A CN A2008100809576 A CNA2008100809576 A CN A2008100809576A CN 200810080957 A CN200810080957 A CN 200810080957A CN 101420054 A CN101420054 A CN 101420054A
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- 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 discloses a battery charging method and a device thereof; the method comprises the following steps: a charge current is input into a battery module which is provided with more than one battery cell for charging; the voltage values of the two ends of the battery cell are checked; when any voltage value is higher than a preset first threshold value, the charging process is kept for a first preset time; whether either of the voltage values of the two ends of the battery cell is higher than a second threshold value has to be judged; if so, over-voltage protection should be protected; if not, the charge current is reduced and the charging process is kept for a second preset time; whether the battery cell is fully charged is judged; if so, the charging process is stopped; if the result is not, the charging process is continued.
Description
[technical field under the invention]
The invention relates to a kind of method for charging batteries and device thereof, particularly relevant for a kind of method for charging batteries and device thereof that slows down cell degradation.
[prior art]
Along with development of science and technology, battery has become indispensable power source, for example MP3 walkman, mobile phone, notebook and motor vehicle etc., all using battery is main power source, for this reason, multiple charging strategy is suggested successively, as decides trickle charge (Constant Trickle Current Charge), constant-current charge (Constant CurrentCharge), constant-current constant-voltage charging (Constant Current Constant Voltage Charg) and the charging of two stages etc.
Cell degradation is epochmaking problem in the battery technology.Cell degradation is except causing charge volume decline and the reduction of battery service efficiency, the easier danger that the battery overvoltage takes place in charging process, because when charging, the voltage difference at aging battery two ends often is higher than the voltage difference at normal battery core two ends.See also Figure 1A and Figure 1B, it shows the battery module with an above normal battery core respectively and has the voltage distribution situation of the battery module of aging battery.In Figure 1A because three battery 101～103 are the normal battery core, so charging voltage 12.6V be mean allocation in three battery 101～103, so the magnitude of voltage at battery 101～103 two ends is 4.2V.
In Figure 1B, in the battery that battery module 1 is comprised, arbitrary one for example aging phenomena take place in battery 102 when aging phenomenon is arranged, and then during battery module 1 charging, the magnitude of voltage at battery 102 two ends can be higher than other normal battery core 101 and 103.Shown in Figure 1B, the magnitude of voltage at aging battery 102 two ends is 4.3V, and the magnitude of voltage at normal battery core 101 and battery 103 two ends is 4.15V.Therefore, aging if battery 102 continues, the magnitude of voltage at aging battery 102 two ends can be more and more higher when then charging, and produce the risk that battery 102 may be exploded.
The conventional batteries charging modes can be full of electricity in order to ensure battery module, often gives battery module is surpassed the charging voltage of its safe load, gets off to cause the aging phenomenon of battery for a long time.In addition, though present battery module has overvoltage protection mechanism and over current protection protection mechanism, above-mentioned mechanism all is designed at the entire cell module, so can't take precautions against the aging danger that is caused of single battery.
For solving above-mentioned shortcoming, to satisfy the demand of user to rechargeable battery, the inventor is based on going in for the study for many years and many practical experience, through research and design and special topic are inquired in many ways, a kind of method for charging batteries and device thereof are proposed, with a kind of implementation and foundation as aforementioned expectation.
Because every problem of the prior art, in order to take into account solution, the inventor proposes a kind of method for charging batteries and device thereof based on research and development and many practical experience for many years, with implementation and the foundation as the above-mentioned shortcoming of improvement.
[summary of the invention]
For overcoming above-mentioned defective, the purpose of this invention is to provide a kind of method for charging batteries and device thereof that can solve the aging problem of reduction battery.
According to purpose of the present invention, a kind of method for charging batteries is proposed, it is as follows that the method comprises step: at first, a battery module with above battery (cell block) is imported charging current, detect the magnitude of voltage at these battery two ends then; If when having one to surpass a preset first threshold in these magnitudes of voltage, then continue charging one first Preset Time, and then judge these battery whether the magnitude of voltage at any one two ends all be higher than second threshold value; if; then carry out overvoltage protection (over voltage protection is called for short OVP), if not; then reduce charging current and continue charging one second Preset Time; judge whether these battery are full of electricity, if then stop charging; if not, then continue charging.
In addition, the invention allows for a kind of battery charger, it comprises: charging module, in order to an above battery input charging current is charged; Over-voltage protection module is in order to provide over-voltage protection function; Control module; in order to detect the magnitude of voltage at above-mentioned battery two ends; when having one to surpass first threshold value in the above-mentioned magnitude of voltage; then control module allows charging module to continue charging; and whether above-mentioned the magnitude of voltage that detects arbitrary battery two ends behind one first Preset Time all be higher than second threshold value; if; then control module starts over-voltage protection module so that over-voltage protection function to be provided; if not; then control module control charging module continues charging one second Preset Time to reduce charging current and to continue to above-mentioned battery; control module detects above-mentioned battery and whether is full of electricity, if then control module stops charging module above-mentioned battery is charged.
The invention allows for a kind of method for charging batteries, it is as follows that the method comprises step: at first, a battery module with above battery (cell block) is imported charging current; Detect the magnitude of voltage at these battery two ends then; If when having one to surpass a preset first threshold in these magnitudes of voltage, then continue charging one first Preset Time; And then judge these battery whether the magnitude of voltage at any one two ends all be higher than second threshold value, if then carry out overvoltage protection (over voltage protection is called for short OVP); If not, one second Preset Time that then stops to charge judges whether these battery are full of electricity, if, then stop charging, if not, then continue charging.
For the ease of the auditor technical scheme of the present invention and the technique effect that reached thereof are further understood and understanding, the invention will be further described below in conjunction with accompanying drawing and preferred embodiment.
[embodiment]
Hereinafter with reference to relevant drawings, the method for charging batteries and the device thereof of preferred embodiment of the present invention is described, for ease of understanding, the same components among the following embodiment all is illustrated with identical Reference numeral.
Fig. 2 shows the calcspar of battery charger embodiment of the present invention.Among Fig. 2, battery charger 20 is applicable to the battery module 26 with an above battery 261, and it comprises a charging module 21, an over-voltage protection module 22 and a control module 23.Charging module 21 in order to above-mentioned battery 261 inputs one charging current charging, and over-voltage protection module 22 usefulness think that the battery module 26 with an above battery 261 provides over-voltage protection function.Wherein, battery charger 20 comprises built-in internal memory 24, in order to store first threshold value 241, second threshold value 242, first Preset Time 243 and second Preset Time 245.
Control module 23 detects the magnitude of voltage at above-mentioned battery 261 two ends; when having one to surpass first threshold value 241 in the above-mentioned magnitude of voltage; then control module 23 allows charging module 21 to continue above-mentioned battery 261 is charged; whether and detect the magnitude of voltage at arbitrary battery 261 two ends all is higher than second threshold value 242 in one first Preset Time 243 back; if; expression has at least one battery 261 to be improper battery; then control module 23 starts over-voltage protection module 22 so that over-voltage protection function to be provided; if not, then control module 23 control charging modules 21 reduce charging current and continue above-mentioned battery 261 chargings second Preset Time 245.
In this embodiment, control module 23 more can comprise a timer 25, and timer 25 is in order to gate time.Control module 23 is carried out Charge Management program 244 and is carried out above-mentioned charging procedure.In addition, built-in internal memory 24 can be ROM or RAM, is used for storing first threshold value 241, second threshold value 242, first Preset Time 243, Charge Management program 244 and second Preset Time 245.Timer 25 can also be realized by hardware mode.
Control module 23 control charging modules 21 are with the magnitude of current that reduces charging current and continue second Preset Time, for example: the charging current system that at every turn imports battery module 26 is reduced to half of charging current last time, and the time of the charging current that each input reduces by half is made as second Preset Time 245.
Please continue to consult Fig. 3, it is charging method of the present invention and the charging voltage of device and the waveform schematic diagram of charging current, it is corresponding with Fig. 2, the waveform when showing battery 21 and being recharged and the waveform that successively decreases of charging current, wherein, the specified full current potential of the battery 261 of battery module 26 is 4.2V.Among the figure, the waveform when line 1 shows battery 261 and just begun to be recharged.Even seeming, the terminal voltage of battery 261 reaches 4.2V, that is full current potential, yet, because the virtual voltage phenomenon, even battery 261 is not when being used, also can occur shown in line 2, the situation that the terminal voltage of battery 261 descends is not charged to this battery if do not continue, then battery 261 may be after using a bit of time, just drop to below the 3.6V, that is do not use the charging capacity of battery completely, thereby cause the shortening of service time.Therefore, existing charging method often gives the charging voltage that battery 261 surpasses its safe load, is to be utilized fully with the charging capacity that guarantees battery 261.,, and take the existing gimmick that overcharges without exception, the battery 261 of specified 4.2V is charged to 4.3V without exception, will damage the useful life of battery module 26 and cause battery 261 accelerated ageings if do not judge the state of battery 261 really.
Based on above-mentioned consideration, when detecting battery 261, control module 23 is charged to first threshold value 241 (being made as 4.18V in the present embodiment), then control module 23 allows charging module 21 continue battery 261 chargings one first Preset Time 243 (t1), and behind first Preset Time 243 (t1), the magnitude of voltage of confirming battery 271 two ends is not higher than second threshold value 242 (being made as 4.22V in the present embodiment), if magnitude of voltage is higher than 4.22V, then represent battery 261 improper battery, the phenomenon that wears out may appear, because general aging battery, the speed that can occur the magnitude of voltage rising at two ends when being recharged is higher than the situation of normal battery core, therefore just can occur being higher than the situation of second threshold value 242 at short notice.When finding battery 21 improper battery, then start overvoltage protection mechanism, to avoid allowing this improper battery continue the issuable danger of charging.If after continuing charging first Preset Time 243 (t1), the terminal voltage of battery is lower than 4.22V, represent that then battery 261 is the normal battery core, then control module 23 is that control charging module 21 is to reduce charging current and to continue battery 261 chargings one second Preset Time 245 (t2).
In this embodiment, control module 23 control charging modules 21 are to reduce charging current and to continue the process of battery 261 chargings second Preset Time 245 (t2) as follows: the charging current that reduces to import battery module 27 when control module 23, each input second Preset Time 245 (t2), then the input power of charging module 21 descends, the terminal voltage at battery two ends is descended, this action also can make the voltage at battery 261 two ends stable, can eliminate virtual voltage and make the chemical reaction of battery 261 inside stable.Behind second Preset Time 245 (t2), whether the magnitude of voltage of judging these battery 261 two ends is lower than the 3rd threshold value (being made as 4.15V in the present embodiment), if, then represent battery 261 underfill electricity still, control module 23 allows charging module 21 to continue battery 21 input charging currents.
When control module 23 detects battery module and does not have abnormal battery, when control module 23 allows charging module 21 to import charging current once more in second Preset Time 245 (t2), 23 of control modules reduce the electric weight of the charging current of charging module 21 input battery 271, for example: among Fig. 3, line 3 is the wave form varies curve of the size of charging current, charging module 21 reduces the electric weight of input charging current, checks once more at last whether battery module 26 is full of electricity, step cycle according to this.
If the magnitude of voltage at battery 261 two ends is higher than the 3rd threshold value, represent that then battery 21 has been filled really, control module 23 just stops 261 chargings of 21 pairs of battery of charging module.Wherein, when setting the length of first Preset Time 253 (t1), must consideration can not make the terminal voltage of battery 261 fill De Taigao and detract its useful life.When setting the length of second Preset Time 245 (t2), also must consider that battery module 26 can stablize the voltage swing of carrying after each charging finishes, and the number of times that will as far as possible avoid changeover module to use.
Above-mentioned is that control module 23 judges whether battery 21 has been full of a kind of embodiment of electricity, and in addition, control module 23 also can judge whether battery 261 is full of by the current value of confirming input battery 21.Note that to judge whether battery 261 has been full of electricity and the voltage protection circuit is all the known technology of those skilled in the art, thereby do not repeat them here.And above-mentionedly judge explanation that whether battery 261 be full of electricity only for for example, but not as limit, anyly judge whether battery 261 has been full of the technological means of electricity all in protection scope of the present invention.
See also Fig. 4, it is the flow chart of steps of the embodiment of method for charging batteries of the present invention.Among the figure, the method comprises the following step:
Step 41: the battery module of above battery of tool (cell block) is imported charging current with the action of charging;
Step 42: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than first threshold value, if then execution in step 43, if not, then execution in step 41;
Step 43: continue charging one first Preset Time;
Step 44: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than second threshold value, if then execution in step 45, if not, then carry out step 46;
Step 45: the execution overvoltage protection (over voltage protection, OVP).Judged improper battery in the above-mentioned battery, so carry out overvoltage protection to avoid dangerous;
Step 46: one second Preset Time stops to charge; And
Step 47: whether the voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if then execution in step 41, if not, then finishes this flow process.
Wherein, whether step 41 is aging in order to differentiate battery module, step 46 and step 47 are in order to judge whether above-mentioned battery all is full of, but do not exceed with these two steps, if there is other technological means can judge the charged state of battery, also can adds this battery charging management method and do not influence the effect of method.
For example, judge in step 47 whether the magnitude of voltage at above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if not, judge then that then battery module has been full of electricity, if, represent that above-mentioned battery is still uncharged, then execution in step 41, if then finish this flow process.
Note that in the above description the magnitude of voltage that detects the battery two ends comprises the voltage difference that detects the battery two ends, or detects the magnitude of voltage at battery two ends respectively, calculates its voltage difference by an additional circuit again.These two kinds of detection modes are all in protection scope of the present invention.
See also Fig. 5, it is another flow chart of steps of the embodiment of method for charging batteries of the present invention.Among the figure, the method comprises the following step:
Step 51: the battery module of above battery of tool (cell block) is imported charging current with the action of charging;
Step 52: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than first threshold value, if then execution in step 43, if not, then execution in step 41;
Step 53: continue charging one first Preset Time;
Step 54: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than second threshold value, if then execution in step 55, if not, then execution in step 56;
Step 56: one second Preset Time stops to charge;
Step 57: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if not, then stops charging, if then carry out step 58; And
Step 58: after continuing charging one the 3rd Preset Time, get back to step 54.
Wherein, step 51 is in order to distinguish whether have aging battery in the above-mentioned battery, step 56 and step 57 are in order to judge whether above-mentioned battery all is full of, but not as limit, if there is other technological means can judge the charged state of battery, also can adds this battery charging management method and do not influence the effect of method.
See also Fig. 6, it is the another flow chart of steps of the embodiment of method for charging batteries of the present invention.Among the figure, the method comprises the following step:
Step 61: have the battery module input charging current of an above battery (cell block) with the action of charging to one;
Step 62: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than first threshold value, if then execution in step 63, if not, then execution in step 61;
Step 63: continue charging one first Preset Time;
Step 64: whether the magnitude of voltage of judging the battery two ends is higher than second threshold value, if then execution in step 65, if not, then execution in step 66.This step is in order to judge whether improper battery is arranged in the above-mentioned battery;
Step 65: judging when control module has improper battery in the above-mentioned battery, and (over voltage protection is OVP) to avoid dangerous so carry out overvoltage protection;
Step 66: reduce charging current and continue charging one second Preset Time; And
Step 67: whether the voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then get back to step 61, if not, then finish this flow process.
Whether step 61 is aging in order to differentiate above-mentioned battery, and step 64 is in order to have judged whether improper battery, if being higher than second threshold value represents that then this battery module has improper battery, so start over-voltage protection function.Step 66 reduces the magnitude of current of charging current; input power is descended; the recruitment of the terminal voltage at battery two ends is descended; so can avoid overtension to cause battery module to damage; reach the effect of protection battery module; and can make the voltage at battery two ends stable, can eliminate virtual voltage and make the chemical reaction of battery inside stable.Step 67 item if the voltage at battery two ends is lower than the 3rd threshold value, is then represented the underfill electricity in order to judge that battery module is to be full of electricity, so import charging current once again, represents then that as if being higher than the 3rd threshold value battery module is full of.
Wherein, step 66 and step 67 are in order to judge whether above-mentioned battery all is full of, but do not exceed, if there is other technological means can judge the charged state of battery, also can adds this method for charging batteries and do not influence the effect of method with these two steps.
Note that in the above description the magnitude of voltage that detects the battery two ends comprises the voltage difference that detects the battery two ends, or detects the magnitude of voltage at battery two ends respectively, calculates its voltage difference by an additional circuit again.These two kinds of detection modes are all in protection scope of the present invention.The method system that regulates charging current can utilize control module control charging module regulating charging current, if the electric weight size that other technological means can the modulation charging current is arranged, also can add this method for charging batteries and does not influence the effect of method.
Note that in the explanation of above-mentioned battery charger, is magnitude of voltage to be carried out at each independent battery core two ends detect, but not as limit.Can a plurality of battery be one group, and the control module of battery charger inside detects the magnitude of voltage at these battery core pack two ends, if this magnitude of voltage is higher than second threshold value, then the battery that this battery core pack comprised all be regarded as improper battery.
See also Fig. 7, it is the flow chart of steps again of the embodiment of method for charging batteries of the present invention.Among the figure, the method comprises the following step:
Step 71: have the battery module input charging current of an above battery (cell block) with the action of charging to one;
Step 72: whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is higher than first threshold value, if then execution in step 73, if not, then execution in step 71;
Step 73: continue charging one first Preset Time;
Step 74: whether the magnitude of voltage of judging the battery two ends is higher than second threshold value, if then execution in step 75, if not, then execution in step 76.This step is in order to judge whether improper battery is arranged in the above-mentioned battery;
Step 75: (over voltage protection is OVP) to avoid because of there being improper battery to cause danger in the above-mentioned battery to carry out overvoltage protection;
Step 76: reduce charging current and continue charging one second Preset Time;
Step 77: whether the voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if then execution in step 78, if not, then finishes this flow process; And
Step 78: continue charging one the 3rd Preset Time, get back to step 74.
Whether step 71 is aging in order to differentiate above-mentioned battery, and step 74 is in order to have judged whether improper battery, if being higher than second threshold value represents that then this battery module cording has improper battery, so start over-voltage protection function.Step 76 is by reducing charging current with the chemical reaction of stable cell in-core portion or the virtual voltage of elimination battery, step 77 item is in order to judge that battery module is to be full of, if the voltage at battery two ends is to be lower than the 3rd threshold value, then represent underfill, the 3rd Preset Time so charge once again represents that then battery module is full of if be higher than the 3rd threshold value.
Wherein, step 76 and step 77 are in order to judge whether above-mentioned battery all is full of, but do not exceed, if there is other technological means can judge the charged state of battery, also can adds this method for charging batteries and do not influence the effect of method with these two steps.
The above only is for example, but not is to its restriction.Anyly do not break away from spirit of the present invention and category, and, all should be contained in protection scope of the present invention its equivalent modifications of carrying out or change.
[brief description of drawingsfig]
Figure 1A is the voltage distribution schematic diagram with battery module of an above normal battery core;
Figure 1B is the voltage distribution schematic diagram with battery module of aging battery;
Fig. 2 is the embodiment calcspar of the battery charger of the embodiment of the invention;
Fig. 3 is charging method and the charging voltage of device and the waveform schematic diagram of charging current in the embodiment of the invention;
Fig. 4 is the flow chart of steps of the embodiment of method for charging batteries of the present invention;
Fig. 5 is another flow chart of steps of the embodiment of method for charging batteries of the present invention;
Fig. 6 is the another flow chart of steps of the embodiment of method for charging batteries of the present invention;
Fig. 7 is the flow chart of steps again of the embodiment of method for charging batteries of the present invention.
[primary clustering symbol description]
1: battery module;
101～103: battery;
20: battery charger;
21: charging module;
22: over-voltage protection module;
23: control module;
24: built-in internal memory;
241: the first threshold values;
242: the second threshold values;
243: the first Preset Times;
244: the Charge Management program
245: the second Preset Times;
25: timer;
26: battery module;
261: battery;
41～47: steps flow chart;
51～58: steps flow chart;
61～67: steps flow chart; And
71～78: steps flow chart.
Claims (26)
1. a method for charging batteries is characterized in that, comprises following steps:
A) battery module with an above battery is imported charging current to charge;
B) magnitude of voltage at the above-mentioned battery of detection two ends;
C) when surpassing first threshold value for one in the above-mentioned magnitude of voltage, then continue charging, and judge behind one first Preset Time whether the magnitude of voltage at above-mentioned arbitrary battery two ends is higher than second threshold value, if, execution in step d then), if not, execution in step e then);
D) carry out overvoltage protection; And
E) judge whether above-mentioned battery is full of electricity, if, then stop charging, if not, then execution in step is a).
2. a kind of method for charging batteries as claimed in claim 1 is characterized in that, described judge above-mentioned battery whether be full of the electricity step e) comprise:
Stop this charging battery module one second Preset Time; And
Whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then judge above-mentioned battery underfill electricity still, if not, judge that then above-mentioned battery is full of.
3. a kind of method for charging batteries as claimed in claim 1 is characterized in that, described first threshold value is to be lower than the magnitude of voltage that this battery is full of electricity.
4. a kind of method for charging batteries as claimed in claim 1 is characterized in that, described second threshold value is to be higher than the magnitude of voltage that this battery is full of electricity.
5. a method for charging batteries is characterized in that, comprises following steps:
A) battery module with an above battery is imported charging current to charge;
B) magnitude of voltage at the above-mentioned battery of detection two ends;
C) when surpassing first threshold value for one in the above-mentioned magnitude of voltage, then continue charging, and judge behind one first Preset Time whether the magnitude of voltage at arbitrary above-mentioned battery two ends is higher than second threshold value, if, execution in step d then), if not, execution in step e then);
D) carry out overvoltage protection; And
E) judge whether above-mentioned battery is full of electricity, if, then stop charging, if not, then get back to step c).
6. a kind of method for charging batteries as claimed in claim 5 is characterized in that, described judge above-mentioned battery whether be full of the electricity step e) comprise:
Stop this charging battery module one second Preset Time; And
Whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then judge above-mentioned battery underfill electricity still, if not, judge that then above-mentioned battery is full of.
7. a kind of method for charging batteries as claimed in claim 6 is characterized in that, if judge above-mentioned battery underfill electricity, then continues charging one the 3rd Preset Time.
8. a kind of method for charging batteries as claimed in claim 5 is characterized in that, described first threshold value is to be lower than the magnitude of voltage that this battery is full of electricity.
9. a kind of method for charging batteries as claimed in claim 5 is characterized in that, described second threshold value is to be higher than the magnitude of voltage that this battery is full of electricity.
10. a method for charging batteries is characterized in that, comprises following steps:
A) battery module with an above battery is imported charging current to charge;
B) magnitude of voltage at the above-mentioned battery of detection two ends;
C) when surpassing first threshold value for one in the above-mentioned magnitude of voltage, then continue charging, and judge behind one first Preset Time whether the magnitude of voltage at arbitrary above-mentioned battery two ends is higher than second threshold value, if, execution in step d then), if not, then carry out step e);
D) carry out overvoltage protection; And
E) reduce this charging current and continuation input one second Preset Time; And
F) judge whether above-mentioned battery is full of electricity, if, then stop charging, if not, then get back to step a).
11. a kind of method for charging batteries as claimed in claim 10 is characterized in that, described judge above-mentioned battery whether be full of the electricity step f) comprise:
Whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then judge above-mentioned battery underfill electricity still, if not, judge that then above-mentioned battery is full of.
12. a kind of method for charging batteries as claimed in claim 10 is characterized in that, described first threshold value is to be lower than the magnitude of voltage that this battery is full of electricity.
13. a kind of method for charging batteries as claimed in claim 10 is characterized in that, described second threshold value is to be higher than the magnitude of voltage that this battery is full of electricity.
14. a method for charging batteries is characterized in that, comprises following steps:
A) battery module with an above battery is imported charging current to charge;
B) magnitude of voltage at the above-mentioned battery of detection two ends;
C) when surpassing first threshold value for one in the above-mentioned magnitude of voltage, then continue charging, and judge behind one first Preset Time whether the magnitude of voltage at arbitrary above-mentioned battery two ends is higher than second threshold value, if, execution in step d then), if not, then carry out step e);
D) carry out overvoltage protection;
E) reduce this charging current and continuation input one second Preset Time; And
F) judge whether above-mentioned battery is full of electricity, if, then stop charging, if not, then get back to step c).
15. a kind of method for charging batteries as claimed in claim 14 is characterized in that, described judge above-mentioned battery whether be full of the electricity step f) comprise:
Whether the magnitude of voltage of judging above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then judge above-mentioned battery underfill electricity still, if not, judge that then above-mentioned battery is full of.
16. a kind of method for charging batteries as claimed in claim 15 is characterized in that, if judge above-mentioned battery underfill electricity, then continues charging one the 3rd Preset Time.
17. a kind of method for charging batteries as claimed in claim 14 is characterized in that, described first threshold value is to be lower than the magnitude of voltage that this battery is full of electricity.
18. a kind of method for charging batteries as claimed in claim 14 is characterized in that, described second threshold value is to be higher than the magnitude of voltage that this battery is full of electricity.
19. a battery charger is applicable to the battery module with an above battery, described battery charger comprises:
Charging module is in order to import charging current to charge to above-mentioned battery;
Over-voltage protection module is with thinking that above-mentioned battery provides over-voltage protection function; And
Control module, be used to detect the magnitude of voltage at above-mentioned battery two ends, when surpassing first threshold value for one in the above-mentioned magnitude of voltage, then this control module allows this charging module to continue above-mentioned battery is charged, and whether above-mentioned the magnitude of voltage that detects arbitrary battery two ends behind one first Preset Time be higher than second threshold value.
20. a kind of battery charger as claimed in claim 19; it is characterized in that; be higher than this second threshold value if described control module detects the magnitude of voltage at above-mentioned arbitrary battery two ends behind this first Preset Time, then this control module starts this over-voltage protection module so that this over-voltage protection function to be provided.
21. a kind of battery charger as claimed in claim 19, it is characterized in that, if detecting the magnitude of voltage at above-mentioned arbitrary battery two ends behind this first Preset Time, described control module is lower than this second threshold value, then the magnitude of current and continuation charging one second Preset Time of this control module system this charging module of control to reduce this charging current.
22. a kind of battery charger as claimed in claim 21, it is characterized in that, described charging module to this second Preset Time of this charging battery module after, whether the magnitude of voltage that then detects above-mentioned arbitrary battery two ends is lower than the 3rd threshold value, if, then this control module is judged above-mentioned battery underfill electricity still, and if not, then this control module judges that above-mentioned battery is full of.
23. a kind of battery charger as claimed in claim 19 is characterized in that described battery charger also comprises built-in internal memory, to store this first threshold value, this second threshold value, this first Preset Time and this second Preset Time.
24. a kind of battery charger as claimed in claim 19 is characterized in that, described control module comprises counter with the counting Preset Time.
25. a kind of battery charger as claimed in claim 19 is characterized in that, described first threshold value is to be lower than the magnitude of voltage that this battery is full of electricity.
26. a kind of battery charger as claimed in claim 19 is characterized in that, described second threshold value is to be higher than the magnitude of voltage that this battery is full of electricity.
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| CN2008100809576A CN101420054B (en) | 2007-10-25 | 2008-02-25 | Battery charging method and device thereof |
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| CN200710167345 | 2007-10-25 | ||
| CN200710167345.6 | 2007-10-25 | ||
| CN2008100809576A CN101420054B (en) | 2007-10-25 | 2008-02-25 | Battery charging method and device thereof |
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| CN101420054B CN101420054B (en) | 2010-07-28 |
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| CN (1) | CN101420054B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545893A (en) * | 2013-10-30 | 2014-01-29 | 上海斐讯数据通信技术有限公司 | Mobile terminal charging safety control method and system |
| CN105379057A (en) * | 2013-07-19 | 2016-03-02 | 株式会社丰田自动织机 | Secondary battery charging system and charging method |
| CN106130094A (en) * | 2016-06-29 | 2016-11-16 | 努比亚技术有限公司 | A kind of USB port charge protection device and method |
| CN109450013A (en) * | 2018-10-22 | 2019-03-08 | 中国联合网络通信集团有限公司 | A kind of management method and device of base station battery |
| CN112098870A (en) * | 2020-09-15 | 2020-12-18 | 国网辽宁省电力有限公司阜新供电公司 | Online testing method for internal resistance of storage battery of parallel power supply equipment |
| CN113078711A (en) * | 2021-04-01 | 2021-07-06 | 安徽华菱汽车有限公司 | Charging control method, system and device for power battery |
| CN115149180A (en) * | 2021-03-30 | 2022-10-04 | 宏碁股份有限公司 | Electronic device and method for inhibiting battery expansion |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5994878A (en) * | 1997-09-30 | 1999-11-30 | Chartec Laboratories A/S | Method and apparatus for charging a rechargeable battery |
| CN1252857C (en) * | 2001-09-26 | 2006-04-19 | 中兴通讯股份有限公司 | Charging method for accumulator |
| CN1725598A (en) * | 2005-04-07 | 2006-01-25 | 崧顺电子（深圳）有限公司 | Battery charging method and device |
-
2008
- 2008-02-25 CN CN2008100809576A patent/CN101420054B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105379057A (en) * | 2013-07-19 | 2016-03-02 | 株式会社丰田自动织机 | Secondary battery charging system and charging method |
| CN103545893A (en) * | 2013-10-30 | 2014-01-29 | 上海斐讯数据通信技术有限公司 | Mobile terminal charging safety control method and system |
| CN106130094A (en) * | 2016-06-29 | 2016-11-16 | 努比亚技术有限公司 | A kind of USB port charge protection device and method |
| CN106130094B (en) * | 2016-06-29 | 2019-05-24 | 努比亚技术有限公司 | A kind of USB port charge protection device and method |
| CN109450013A (en) * | 2018-10-22 | 2019-03-08 | 中国联合网络通信集团有限公司 | A kind of management method and device of base station battery |
| CN112098870A (en) * | 2020-09-15 | 2020-12-18 | 国网辽宁省电力有限公司阜新供电公司 | Online testing method for internal resistance of storage battery of parallel power supply equipment |
| CN115149180A (en) * | 2021-03-30 | 2022-10-04 | 宏碁股份有限公司 | Electronic device and method for inhibiting battery expansion |
| CN115149180B (en) * | 2021-03-30 | 2023-05-09 | 宏碁股份有限公司 | Electronic device and method for inhibiting expansion of battery |
| CN113078711A (en) * | 2021-04-01 | 2021-07-06 | 安徽华菱汽车有限公司 | Charging control method, system and device for power battery |
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|---|---|
| CN101420054B (en) | 2010-07-28 |
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