CN105811481A - Charging method and charging device suitable for the same - Google Patents
Charging method and charging device suitable for the same Download PDFInfo
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- CN105811481A CN105811481A CN201410843139.2A CN201410843139A CN105811481A CN 105811481 A CN105811481 A CN 105811481A CN 201410843139 A CN201410843139 A CN 201410843139A CN 105811481 A CN105811481 A CN 105811481A
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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
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- 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
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Abstract
The invention relates to a charging method, comprising steps of setting preset electric current quantity, setting default time according to characteristics of a battery unit, (b) providing charging current in order to charge the battery unit with fixed current, (c) detecting whether parameters of the battery unit reach a preset condition, if yes, executing a next step, (d) providing charging voltage by a charging device to charge the battery unit with fixed voltage, reducing the charging current received by the battery unit by the preset current quantity, (e) adding one to the counting value, (f) accumulating elapsed time after the step (e) is executed for first time, (g) determining whether the accumulated elapsed time is smaller than the preset time, (h) determining whether the accumulated counting value is smaller than the preset counting value when the determination result of the step (g) is negative, and executing the step (f) when the determination result of the step (h) is positive.
Description
Technical field
The present invention, about a kind of charging method, espespecially a kind of utilizes the time to control to reach the charging method of stage decline charging current and applicable charging device thereof in charging process.
Background technology
Portable electronic devices, such as mobile phone etc., it is widely used in daily life, those portable electronic devices generally utilize and rechargeable battery that unit is as power supply, finite capacity due to the volume of portable electronic devices and battery unit, it is therefore desirable to be often charged for battery unit.
Traditional charging method or charging device mainly charge with hybrid charging modes for battery unit, that is in the initial stage of battery unit charging, it is charged with fixed current, and when the voltage of battery unit rises to a threshold value via fixed current charging, change and be charged with fixed voltage, and the disposable charging current that significantly downgrades is to reduce charging rate, the problem avoiding battery unit generation safety whereby, and promote the life-span of battery unit.But, above-mentioned tradition charging method or charging device, owing to significantly downgrading charging current to reduce charging rate, cause that the overall charging interval of battery unit is elongated.
And in order to solve above-mentioned problem, the charging method or the charging device that separately have parts of traditional then change into when battery unit makes in the process that the voltage of battery unit rises via fixed voltage charging, constantly detect the voltage of battery unit, decline the acquiescence magnitude of current by a small margin by charging current when reaching each acquiescence test point with the voltage when battery unit, charging current is actually declined in stage (step) mode, but not disposable significantly downgrade, therefore the overall charging interval of battery unit can be shortened.
Although the charging method that preceding sections is traditional or charging device shorten the overall charging interval of battery unit really, yet with battery unit in charging process, charging current is declined by a small margin, voltage variety for battery unit is minimum, therefore battery cell voltage changes and not easily detects, cause that charging device must have comparatively accurate voltage detection unit, and then make the cost of charging device relatively improve.In addition, the charging method traditional due to preceding sections or charging device must control the charging current decline in stage mode in the way of detecting the voltage of battery unit, so detect the impact being easily subject to some special circumstances in the process of voltage, such as it is subject to noise jamming produced by other circuit within charging device etc., cause that testing result cannot the minor variations situation of real voltage of correct response battery unit, thus, it would be possible to the usefulness of battery unit, life-span and safety are reduced.
Therefore, how to develop a kind of charging method improving above-mentioned prior art defect and applicable charging device thereof, actually correlative technology field person current problem in the urgent need to address.
Summary of the invention
It is an object of the invention to provide a kind of charging method and applicable charging device thereof, wherein charging method and applicable charging device thereof utilize the time to control to reach stage decline charging current in hybrid charging process, by solve tradition charging method or charging device must the voltage to detect battery unit whether arrive each acquiescence test point in the way of control the decline that charging current is stage, cause the defects such as relatively costly, the usefulness of battery unit of conventional charging arrangements, life-span and safety minimizing.
For reaching above-mentioned purpose, the one wider embodiment of the present invention is for providing a kind of charging method, it is applied to charging device, wherein battery unit is charged by charging device, charging method comprises the steps of (a) and sets predetermined current amount the property settings default time according to battery unit；B () charging device comes into operation and provides charging current that battery unit is charged, and the current value of fixing charging current；Whether c parameter that () detects battery unit current arrives pre-conditioned, and performs next step when testing result is for being；D () charging device provides the charging voltage of fixed voltage value that battery unit is charged, and the charging current decline predetermined current amount received by current battery unit；E count value is added one by ()；F () starts the elapsed time after accumulative first time execution of step (e)；G () judges that whether the accumulative elapsed time is less than Preset Time；H () is when the judged result of step (g) is no, it is judged that whether accumulative count value is less than predetermined count value；I (), when the judged result of step (h) is for being, performs step (f) again；And (j) is when the differentiation result of step (h) is no, maintains the charging current that current battery unit receives, and again perform step (c).
For reaching above-mentioned purpose, another wider embodiment of the present invention is for providing a kind of charging device performing foregoing charging method, comprise: electric energy regulon, electrically connect with power-supply unit, input electric energy in order to be provided by power-supply unit is changed, optionally to export adjustable charging voltage and charging current；Detection unit, electrically connects with battery unit, in order to detect whether the current parameter of battery unit arrives pre-conditioned, and according to testing result correspondence output detections signal；And control unit, electrically connect with detection unit and electric energy regulon, in order to receive detection signal and to control the running of electric energy regulon, wherein control unit stores predetermined count value in advance, and store Preset Time in advance according to the characteristic of battery unit, and there is enumerator, in order to carry out the accumulative of count value.
For reaching above-mentioned purpose, the another wider embodiment of the present invention is for providing a kind of charging method, it is applied to charging device, wherein battery unit is charged by charging device, charging method comprises the steps of (a) and sets predetermined current amount the property settings default time according to battery unit；B () charging device comes into operation and provides charging current that battery unit is charged, and the current value of fixing charging current；Whether c parameter that () detects battery unit current arrives pre-conditioned, and performs next step when testing result is for being；D () this charging device provides a charging voltage of fixed voltage value that battery unit is charged, and the charging current that received by current battery unit declines current predetermined current amount；E count value is added one by ()；F () starts the elapsed time after accumulative first time execution of step (e)；G () judges that whether the accumulative elapsed time is less than current Preset Time；H () is when the judged result of step (g) is no, it is judged that whether accumulative count value is less than predetermined count value；I (), when the judged result of step (h) is for being, performs step (f) again；J (), when the differentiation result of step (h) is no, maintains the charging current that current battery unit receives；And (K) adjusts current predetermined current amount and the Preset Time that corresponding adjustment is current, and again perform step (c).
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the charging device of present pre-ferred embodiments.
Fig. 2 is the operation workflow figure of the first preferred embodiment of the charging method being applied to the charging device shown in Fig. 1.
Fig. 3 is the sequential chart of the electricity of charging voltage when being applied to the charging method shown in Fig. 2 and battery unit is charged of the charging device shown in Fig. 1, charging current, the voltage of battery unit and battery unit.
Fig. 4 is the operation workflow figure of the second preferred embodiment of the charging method being applied to the charging device shown in Fig. 1.
Fig. 5 is the sequential chart of the electricity of charging voltage when being applied to the charging method shown in Fig. 4 and battery unit is charged of the charging device shown in Fig. 1, charging current, the voltage of battery unit and battery unit.
[symbol description]
1: charging device
8: power-supply unit
9: battery unit
10: electric energy regulon
11: control unit
110: enumerator
12: detection unit
P: input electric energy
V: charging voltage
I: charging current
S: detection signal
Tv, Tv1: elapsed time
Ir, Ir1: predetermined current amount
I ': saturation current value
Io: charging current value
T1, T2, T3, T1 ', T2 ', T3', T4 ', T5 ': time
S1～S11, S1 '～S12 ': be applied to the step of the charging method of charging device
Detailed description of the invention
Some exemplary embodiments embodying feature of present invention and advantage will describe in detail in the explanation of back segment.Iting should be understood that the present invention can have various changes in different modes, it neither departs from the scope of the present invention, and explanation therein and the graphic use being illustrated as in itself, not for the restriction present invention.
Referring to Fig. 1, it is the electrical block diagram of charging device of present pre-ferred embodiments.As shown in Figure 1, the charging device 1 of the present embodiment electrically connects with a power-supply unit 8 and battery unit 9, in order to receive the input electric energy P that power-supply unit 8 provides, and this input electric energy P is changed, one battery unit 9 is charged optionally exporting an adjustable charging voltage V and/or a charging current I.
In above-described embodiment, charging device 1 can be but be not limited to hybrid charging modes, battery unit 9 is charged, that is when charging device 1 comes into operation, first with constant current mode (also fixing by the current value of charging current I), battery unit 9 is charged, and when the current parameter of battery unit 9 arrive because constant current mode charging one pre-conditioned time, then change and battery unit 9 is charged determining voltage system (also fixing by the magnitude of voltage of charging voltage V), and judge that battery unit 9 stops charging as filling full state when the current value of the charging current I that battery unit 9 receives is less than a setting saturation current value.It addition, battery unit 9 can be made up of lithium battery, but being not limited, the various batteries being charged all may make up battery unit 9 such as.
Charging device 1 comprises electric energy regulon 10, control unit 11 and a detection unit 12.Electric energy regulon 10 electrically connects with power-supply unit 8 and battery unit 9, changes in order to the input electric energy P provided by power-supply unit 8, to export adjustable charging voltage V and charging current I, battery unit 9 is charged.
Detection unit 12 electrically connects with battery unit 9, in order to detect whether the current parameter of battery unit 9 arrives pre-conditioned, and according to testing result correspondence output one detection signal S.
In some embodiments, the current parameter of battery unit 9 can be but be not limited to the current temperature of the current voltage of the current capacitance percentage ratio of battery unit 9, battery unit 9, battery unit 9 and/or battery unit 9 current charging interval etc., the implied terms parameter that then corresponding battery unit 9 is current and can be but be not limited to default capacitance amount percentage ratio, default voltage, default temperature and/or acquiescence charging interval etc..Additionally, the circuit framework of detection unit 12 actually has different embodiments according to the kind difference of the parameter of the battery unit 9 detected, such as when detecting unit 12 and being used for detecting the current voltage of battery unit 9, then the circuit framework detecting unit 12 can be made up of the functional circuit with detection voltage or electronic building brick.
Control unit 11 electrically connects with detection unit 12 and electric energy regulon 10, and receive detection signal S, additionally, control unit 11 stores a modifiable predetermined count value in advance, and store a modifiable Preset Time in advance according to the characteristic of battery unit 9, additionally, control unit 11 has more an enumerator 110, to carry out the accumulative of a count value.nullControl unit 11 is when charging device 1 comes into operation，Control electric energy regulon 10 to export charging current I and battery unit 9 is charged，And the current value of charging current I is fixed，With constant current mode, battery unit 9 is charged whereby，And when according to detection signal S, control unit 11 learns that the current parameter of battery unit 9 arrives implied terms，Control unit 11 just controls electric energy regulon 10 except output charging current I，More battery unit 9 is charged by output charging voltage V，And the magnitude of voltage of charging voltage V is fixed，Battery unit 9 is charged determining voltage system whereby，In addition，When according to detection signal S, control unit 11 learns that the current parameter of battery unit 9 arrives implied terms，Control unit 11 more controls electric energy regulon 10 and is declined by current for battery unit 9 received charging current I a predetermined current amount according to internal stored setting，The such as predetermined current amount Ir shown in Fig. 3，And start counting up value accumulative and by accumulative for count value once，And add up an elapsed time Tv (as shown in Figure 3)，And when accumulative elapsed time Tv more than or equal to (not less than) Preset Time and accumulative after count value less than predetermined count value time，Control unit 11 just again controls electric energy regulon 10 and is declined by current for battery unit 9 received charging current I a predetermined current amount，And it is accumulative to repeat above-mentioned count value、Accumulative elapsed time Tv and follow-up all starts.
As from the foregoing, in charging device 1 to determine in the stage that battery unit 9 is charged by voltage system, charging current I is actually stage decline, and decline after predetermined current amount when current because of battery unit 9 for charging current I parameter arrives pre-conditioned and first time, charging current I according to predetermined count value in through each Preset Time i.e. decline predetermined current again amount.
In above-described embodiment, no matter battery unit 9 which kind of battery is made up of, the characteristic of battery unit 9 all has internal resistance, receive in the charging process of charging current I at battery unit 9, if the current value of charging current I declines, then the voltage of battery unit 9 will rise another a period of time after falling before a period of time again, therefore battery unit 9 has a current versus time descending slope and a current versus time rate of rise in response to the decline of charging current I, wherein current versus time descending slope has different changes from the different of the predetermined current amount that the actually corresponding charging current I of the slope value of the current versus time rate of rise declines.As from the foregoing, from charging current I first time decline predetermined current amount to starting the second time decline acquiescence magnitude of current, the voltage of battery unit 9 by drop to rising terminate elapsed time it is contemplated that, therefore utilize this characteristic, predetermined current amount (namely giving tacit consent to magnitude of current Ir in the present embodiment), current versus time descending slope and the current versus time rate of rise that the control unit 11 of the charging device 1 of the present invention actually just declines according to the internal resistance of battery unit 9, charging current I and store this Preset Time in advance, the calculation of this Preset Time is:
T=R* △ I (1/r1+1/r2)；
Wherein T is default time, R is the internal resistance of battery unit 9, △ I is the charging current I predetermined current amount (being predetermined current amount Ir in the present embodiment) declined, and r1 is the current versus time descending slope of battery unit 9, and r2 is the current versus time rate of rise of battery unit 9.
Refer to Fig. 2, and coordinate Fig. 1, wherein Fig. 2 is the operation workflow figure of the first preferred embodiment of the charging method being applied to the charging device shown in Fig. 1, as shown in figures 1-2, first, performing step S1, charging device 1 must set the acquiescence magnitude of current, and the control unit 11 according to the property settings default time of battery unit 9 to charging device 1.Then, performing step S2, charging device 1 comes into operation and exports charging current I and battery unit 9 is charged, and wherein control unit 11 controls electric energy regulon 10 and fixes the current value of charging current I.Then, performing step S3, control unit 11 is according to whether the detection signal S parameter detecting battery unit 9 current arrives pre-conditioned.
When the parameter that testing result is battery unit 9 of step S3 arrives pre-conditioned, then perform step S4, control unit 11 controls electric energy regulon 10 and is more output as the charging voltage V of fixed value battery unit 9 is charged, and control unit 11 controls electric energy regulon 10 and declined by the charging current I that current battery unit 9 receives a predetermined current amount.Then, perform step S5, start counting up value and add up and count value current for the enumerator 110 of control unit 11 is added one.Then, performing step S6, control unit 11 starts the elapsed time after accumulative first time execution of step S5.Then, performing step S7, control unit 11 judges that whether this accumulative elapsed time is less than Preset Time.
When the judged result of step S7 be accumulative this elapsed time less than Preset Time time, then again perform step S6.Otherwise, when the judged result of step S7 be accumulative this elapsed time not less than Preset Time time, then perform step S8, it is judged that whether accumulative count value is less than predetermined count value.
When the judged result of step S8 be accumulative count value less than predetermined count value time, then again perform step S4.Otherwise, when the judged result of step S8 be accumulative count value not less than predetermined count value time, then perform step S9, control unit 11 maintains the current value of the charging current I that current battery unit 9 receives, and again performs step S3.
It addition, when the parameter that testing result is battery unit 9 of step S3 does not arrive pre-conditioned, then performing step S10, control unit 11 judges that whether the current value of the charging current I that current battery unit 9 receives sets saturation current value more than one.When the current value that judged result is the charging current I that current battery unit 9 receives of step S10 is not more than setting saturation current value, then perform step S11, complete charge.Otherwise, when the current value that judged result is the charging current I that current battery unit 9 receives of step S10 is more than setting saturation current value, then again perform step S3.
In some embodiments, in step S9, the counting value returns of control unit 11 more control counter 110.It addition, the predetermined count value that control unit 11 stores in advance can be but be not limited to more than twice.Furthermore, the initial value of the count value of enumerator 110 can be but be not limited to zero.Below by the charging voltage V illustrated with Fig. 3 when battery unit 9 is charged by charging device 1, charging current I, battery unit 9 the corresponding change of voltage, and in Fig. 3, illustrate with predetermined count value for twice.Referring to Fig. 3, and coordinate the 1st and 2 figure, wherein Fig. 3 is the sequential chart of the voltage of charging voltage when being applied to the charging method shown in Fig. 2 and battery unit is charged of the charging device shown in Fig. 1, charging current, battery unit.As shown in Figure 3, charging device 1 comes into operation when time 0, now the electric energy regulon 10 of charging device 1 exports charging current I battery unit 9 is charged, and control unit 11 controls electric energy regulon 10 and the current value of charging current I is maintained at the fixing charging current value Io of setting.When in time T1, according to detection signal S, control unit 11 detects that the parameter of battery unit 9 arrives implied terms, control unit 11 controls rechargeable electrical energy regulon 10 and is output as the charging voltage V of fixed value battery unit 9 is charged, and control unit 11 controls electric energy regulon 10 and current battery unit 9 is received as the charging current I decline predetermined current amount Ir of fixing charging current value Io, and make the current value of charging current I be become charging current value Io-predetermined current amount Ir by original charging current value Io, the count value that enumerator 110 is zero is also added one by control unit 11, also accumulative elapsed time Tv is started.Once to time T2, control unit 11 judges the elapsed time Tv added up, that is time T1 to the time T2 passed time is more than or equal to Preset Time, and at present for accumulative count value once less than when being set as the predetermined count value of twice, control unit 11 just controls the charging current I decline predetermined current amount Ir that current battery unit 9 is received by electric energy regulon 10 again, the value making charging current I is become the predetermined current amount Ir of charging current value Io-2 times by charging current value Io-predetermined current amount Ir, control unit 11 also will add one for accumulative count value once at present again.And after time T2, judge to be that the accumulative count value of twice is not less than the predetermined count value being set as twice at present due to control unit 11, therefore control electric energy regulon 10 is maintained the current value (i.e. the predetermined current amount Ir of charging current value Io-2 times) of the charging current I that current battery unit 9 receives by control unit 11, and with the charging voltage V of fixed value, battery unit 9 is charged.When the actual voltage value of battery unit 9 is close to charging voltage value, charging current I walks unhurriedly minimizing, until when control unit 11 judges that the current value of charging current I is more than setting saturation current value, for instance when time T3 shown in Fig. 3, then control charging device 1 and terminate battery unit 9 is charged.Certainly, control unit 11 is not limited to control charging current I and all declines with identical predetermined current amount when the parameter that battery unit 9 each time is current arrives pre-conditioned, in other embodiments, control unit 11 also can control charging current I when the parameter that battery unit 9 each time is current arrives pre-conditioned, stage decline is carried out with different predetermined current amounts, and above-mentioned embodiment can charging current I adjusts predetermined current amount reach with the setting value stored by control unit 11 after completing stage decline according to predetermined count value the parameter arrival that battery unit 9 is current is pre-conditioned.In addition, in response to charging current I when the parameter that battery unit 9 each time is current arrives pre-conditioned, predetermined current amount that can be different carries out stage decline, therefore formula according to T=R* △ I (1/r1+1/r2) mentioned above is known, when predetermined current amount changes, Preset Time i.e. correspondence change, thus, when the parameter that battery unit 9 each time is current arrives pre-conditioned, charging current I declines after corresponding predetermined current amount, charging current I actually according to predetermined count value and in again decline after different Preset Times correspondence predetermined current amount.
Refer to Fig. 4, and coordinate Fig. 1, wherein Fig. 4 is the operation workflow figure of the second preferred embodiment of the charging method being applied to the charging device shown in Fig. 1, as shown in 1-4 figure, first, performing step S1 ', charging device 1 must set the acquiescence magnitude of current, and the control unit 11 according to the property settings default time of battery unit 9 to charging device 1.Then, performing step S2 ', charging device 1 comes into operation and exports charging current I and battery unit 9 is charged, and wherein control unit 11 controls electric energy regulon 10 and fixes the current value of charging current I.Then, performing step S3 ', control unit 11 is according to whether the detection signal S parameter detecting battery unit 9 current arrives pre-conditioned.
When the parameter that testing result is battery unit 9 of step S3 ' arrives pre-conditioned, then perform step S4 ', control unit 11 controls electric energy regulon 10 and is more output as the charging voltage V of fixed value battery unit 9 is charged, and control unit 11 controls the charging current I that current battery unit 9 receives by electric energy regulon 10 and declines current predetermined current amount.Then, perform step S5 ', start counting up value and add up and count value current for the enumerator 110 of control unit 11 is added one.Then, performing step S6 ', control unit 11 starts the elapsed time after accumulative first time execution of step S5 '.Then, performing step S7 ', control unit 11 judges that whether this accumulative elapsed time is less than current Preset Time.
When the judged result of step S7 ' is accumulative this elapsed time less than current Preset Time, then again perform step S6 '.Otherwise, when the judged result of step S7 ' be accumulative this elapsed time not less than current Preset Time time, then perform step S8 ', it is judged that whether accumulative count value is less than predetermined count value.
When the judged result of step S8 ' be accumulative count value less than predetermined count value time, then again perform step S4 '.Otherwise, when the judged result of step S8 ' be accumulative count value not less than predetermined count value time, then perform step S9 ', control unit 11 maintains the current value of the charging current I that current battery unit 9 receives.And after step S9 ', then perform S12 ', adjust current predetermined current amount, and adjust current Preset Time accordingly, and then perform step S3 '.
It addition, when the parameter that testing result is battery unit 9 of step S3 ' does not arrive pre-conditioned, then performing step S10 ', control unit 11 judges that whether the current value of the charging current I that current battery unit 9 receives sets saturation current value more than one.When the current value that judged result is the charging current I that current battery unit 9 receives of step S10 ' is not more than setting saturation current value, then perform step S11 ', complete charge.Otherwise, when the current value that judged result is the charging current I that current battery unit 9 receives of step S10 ' is more than setting saturation current value, then again perform step S3 '.
In some embodiments, in step S9 ', the counting value returns of control unit 11 more control counter 110.It addition, in step 12 ' in, control unit 11 can be made to adjust predetermined current amount according to the setting value stored by control unit 11.It addition, the predetermined count value that control unit 11 stores in advance can be but be not limited to more than twice.Furthermore, the initial value of the count value of enumerator 110 can be but be not limited to zero.
Below by the charging voltage V illustrated with Fig. 5 when battery unit 9 is charged by charging device 1, charging current I, battery unit 9 the corresponding change of voltage, and in Fig. 5, with predetermined count value for twice, the parameter of battery unit 9 illustrates when arriving pre-conditioned twice.Referring to Fig. 5, and coordinate Fig. 1 and Fig. 4, wherein Fig. 5 is the sequential chart that the charging device shown in Fig. 1 is applied to the voltage of charging voltage when battery unit is charged by the charging method two shown in Fig. 4, charging current, battery unit.As shown in Figure 5, charging device 1 comes into operation when time 0, now the electric energy regulon 10 of charging device 1 exports charging current I battery unit 9 is charged, and control unit 11 controls electric energy regulon 10 and the current value of charging current I is maintained at the fixing charging current value Io of setting.When in time T1 ', according to detection signal S, control unit 11 detects that the parameter first time of battery unit 9 arrives implied terms, control unit 11 controls rechargeable electrical energy regulon 10 and is output as the charging voltage V of fixed value battery unit 9 is charged, and control unit 11 controls electric energy regulon 10 and current battery unit 9 is received as the charging current I decline predetermined current amount Ir of fixing charging current value Io, and make the current value of charging current I be become charging current value Io-predetermined current amount Ir by original charging current value Io, the count value that enumerator 110 is zero is also added one by control unit 11, also accumulative elapsed time Tv is started.Once to time T2 ', control unit 11 judges the elapsed time Tv added up, that is time T1 ' to time T2 ' the passed time is more than or equal to Preset Time, and at present for accumulative count value once less than when being set as the predetermined count value of twice, control unit 11 just controls the charging current I decline predetermined current amount Ir that current battery unit 9 is received by electric energy regulon 10 again, the value making charging current I is become the predetermined current amount Ir of charging current value Io-2 times by charging current value Io-predetermined current amount Ir, control unit 11 also will add one for accumulative count value once at present again.And after time T2 ', judge to be that the accumulative count value of twice is not less than the predetermined count value being set as twice at present due to control unit 11, therefore control electric energy regulon 10 is maintained the current value (i.e. the predetermined current amount Ir of charging current value Io-2 times) of the charging current I that current battery unit 9 receives by control unit 11, in addition, it is predetermined current amount Ir1 that control unit 11 more adjusts predetermined current amount Ir1 according to inner setting, and it being changed to predetermined current amount Ir1 in response to predetermined current amount Ir1 originally, Preset Time is also corresponding to be changed.And when in time T3 ', according to detection signal S, control unit 11 detects that the parameter second time of battery unit 9 arrives implied terms, control unit 11 just controls the charging current I decline predetermined current amount Ir1 that current battery unit 9 is received by electric energy regulon 10, the value making charging current I becomes the predetermined current amount Ir-predetermined current amount Ir1 of charging current value Io-2 times, the count value that enumerator 110 is zero is also added one by control unit 11, also start accumulative elapsed time Tv1 (owing to changing in Preset Time, thus the elapsed time change be labeled as Tv1).Once to time T4 ', control unit 11 judges the elapsed time Tv1 added up, that is time T3 ' to time T4 ' the passed time is more than or equal to being different from the script time T1 ' Preset Time to time T2 ' the passed time, and at present for accumulative count value once less than when being set as the predetermined count value of twice, control unit 11 just controls the charging current I decline predetermined current amount Ir1 that current battery unit 9 is received by electric energy regulon 10 again, the value making charging current I becomes the predetermined current amount Ir1 of predetermined current amount Ir-2 times of charging current value Io-2 times, control unit 11 also will add one for accumulative count value once at present again.And after time T4 ', judge to be that the accumulative count value of twice is not less than the predetermined count value being set as twice at present due to control unit 11, therefore control electric energy regulon 10 is maintained the current value (i.e. the predetermined current amount Ir1 of the predetermined current of charging current value Io-2 times amount Ir-2 times) of the charging current I that current battery unit 9 receives by control unit 11, and with the charging voltage V of fixed value, battery unit 9 is charged.When the actual voltage value of battery unit 9 is close to charging voltage value, charging current I walks unhurriedly minimizing, until when control unit 11 judges that the current value of charging current I is more than setting saturation current value I ', for instance in the time T5 ' shown in Fig. 5, then control charging device 1 and terminate battery unit 9 is charged.
In sum, the present invention provides a kind of charging method and applicable charging device thereof, wherein the charging method of the present invention arrives pre-conditioned and first time in the charging current parameter current because of battery unit and declines after predetermined current amount, namely according to predetermined count value in through each Preset Time decline predetermined current again amount, that is utilize the time to control to reach stage decline charging current, therefore compared to tradition charging method or charging device need to the voltage to detect battery unit whether arrive each acquiescence test point in the way of control the decline that charging current is stage, the charging device of the present invention can save production cost because of the comparatively accurate voltage detection unit of need not have, and accurately reach stage decline charging current because utilizing the Preset Time that can be previously obtained, therefore the usefulness of battery unit can be promoted, life-span and safety.
Being the charging method with the present invention and the value of the great industry of applicable charging device thereof, files an application in whence in accordance with the law.
The present invention must be appointed by those skilled in the art execute craftsman think and be all as modify, so neither de-scope as claimed in attached claim.
Claims (15)
1. a charging method, is applied to a charging device, and wherein a battery unit is charged by this charging device, and this charging method comprises the steps of
A () sets a predetermined current amount property settings one default time according to this battery unit；
B () this charging device comes into operation and provides a charging current that this battery unit is charged, and fix the current value of this charging current；
C () detects whether the current parameter of this battery unit arrives one pre-conditioned, and perform next step when testing result is for being；
D () this charging device provides a charging voltage of fixed voltage value that this battery unit is charged, and the predetermined current amount that this charging current that this battery unit receives at present declined；
E one count value is added one by ()；
F () starts the elapsed time after accumulative first time execution of step (e)；
G () judges that whether this accumulative elapsed time is less than this Preset Time；
H () is when the judged result of step (g) is no, it is judged that whether this accumulative count value is less than a predetermined count value；
I (), when the judged result of step (h) is for being, performs step (f) again；And
J (), when the differentiation result of step (h) is no, maintains this charging current that this battery unit receives at present, and again performs step (c).
2. charging method as claimed in claim 1, wherein performs step (K) when the testing result of step (c) is no: judge that whether the current value of this charging current that this battery unit receives sets saturation current value more than one.
3. charging method as claimed in claim 2, wherein when the judged result of step (K) is for being, again performs step (c), when the judged result of step (K) is no, terminates this charging method.
4. charging method as claimed in claim 1, wherein in step (j), by this counting value returns.
5. charging method as claimed in claim 1, wherein when the judged result of step (g) is for being, performs step (f) again.
6. charging method as claimed in claim 1, wherein this Preset Time=R* △ I (1/r1+1/r2), wherein R is the internal resistance of this battery unit, △ I is predetermined current amount, r1 is a current versus time descending slope of this battery unit, and r2 is a current versus time rate of rise of this battery unit.
7. charging method as claimed in claim 1, wherein this preset count is more than twice.
8. charging method as claimed in claim 1, the parameter that wherein this battery unit is current is the current temperature of the current voltage of the current capacitance percentage ratio of this battery unit, this battery unit, this battery unit and/or this battery unit current charging interval.
9. charging method as claimed in claim 8, wherein this is pre-conditioned is a default capacitance amount percentage ratio, a default voltage, a default temperature and/or an acquiescence charging interval.
10. perform a charging device for charging method described in claim 1, comprise:
One electric energy regulon, electrically connects with a power-supply unit, changes in order to the input electric energy provided by this power-supply unit, optionally to export this charging voltage adjustable and this charging current；
One detection unit, electrically connects with this battery unit, whether arrives that this is pre-conditioned in order to detect the current parameter of this battery unit, and exports a detection signal according to this testing result correspondence；And
One control unit, electrically connect with this detection unit and this electric energy regulon, in order to receive this detection signal and to control the running of this electric energy regulon, wherein this control unit stores this predetermined count value in advance, and store this Preset Time in advance according to the characteristic of this battery unit, and there is an enumerator, in order to carry out the accumulative of this count value.
11. a charging method, being applied to a charging device, wherein a battery unit is charged by this charging device, and this charging method comprises the steps of
A () sets a predetermined current amount property settings one default time according to this battery unit；
B () this charging device comes into operation and provides a charging current that this battery unit is charged, and fix the current value of this charging current；
C () detects whether the current parameter of this battery unit arrives one pre-conditioned, and perform next step when testing result is for being；
D () this charging device provides a charging voltage of fixed voltage value that this battery unit is charged, and this current predetermined current amount that this charging current that this battery unit receives at present declined；
E one count value is added one by ()；
F () starts the elapsed time after accumulative first time execution of step (e)；
G () judges that whether this accumulative elapsed time is less than this current Preset Time；
H () is when the judged result of step (g) is no, it is judged that whether this accumulative count value is less than a predetermined count value；
I (), when the judged result of step (h) is for being, performs step (f) again；
J (), when the differentiation result of step (h) is no, maintains this charging current that this battery unit receives at present；And
(K) this current predetermined current amount is adjusted, and this Preset Time that corresponding adjustment is current, and again perform step (c).
12. charging method as claimed in claim 11, wherein perform step (K) when the testing result of step (c) is no: judge that whether the current value of this charging current that this battery unit receives sets saturation current value more than one.
13. charging method as claimed in claim 12, wherein when the judged result of step (K) is for being, again perform step (c), when the judged result of step (K) is no, terminate this charging method.
14. charging method as claimed in claim 11, wherein when the judged result of step (g) is for being, again perform step (f).
15. charging method as claimed in claim 11, wherein in step (K), adjust this predetermined current amount according to a setting value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410843139.2A CN105811481A (en) | 2014-12-30 | 2014-12-30 | Charging method and charging device suitable for the same |
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| CN201410843139.2A CN105811481A (en) | 2014-12-30 | 2014-12-30 | Charging method and charging device suitable for the same |
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| CN105811481A true CN105811481A (en) | 2016-07-27 |
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| CN201410843139.2A Pending CN105811481A (en) | 2014-12-30 | 2014-12-30 | Charging method and charging device suitable for the same |
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Application publication date: 20160727 |