CN103033751B - Battery detecting method, battery and electronic device - Google Patents
Battery detecting method, battery and electronic device Download PDFInfo
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- CN103033751B CN103033751B CN201110294867.9A CN201110294867A CN103033751B CN 103033751 B CN103033751 B CN 103033751B CN 201110294867 A CN201110294867 A CN 201110294867A CN 103033751 B CN103033751 B CN 103033751B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention aims at providing a battery detecting method, a battery and an electronic device and improving the battery safety. The battery comprises multiple parallelly-connected battery cells. The battery detecting method comprises the steps of charging the battery; obtaining a current value for judging diameters of the battery; obtaining a standard value for judging the diameters; obtaining a comparison value of the current value judging the diameters and the standard value for judging the diameters; and confirming that disconnected battery cells exist in the battery when the comparison value meets a predetermined condition. The safety of the battery in use is improved.
Description
Technical field
The invention belongs to electronic applications, particularly a kind of battery detection method, battery and electronic equipment.
Background technology
Along with the continuous progress of electronic technology, increasing electronic equipment is all towards portable future development, and as mobile phone, notebook computer, panel computer etc., it all belongs to portable electric appts.
And portable electric appts all has the rechargeable battery powered mode of use.
Current rechargeable battery is divided into various ways, and wherein, in order to improve the flying power of battery, the many modes also of single string have become the basic structure of the battery of a lot of electronic equipment.
And prior art do not provide how many to single string and the battery operated situation of battery detect, the trouble free service of battery cannot be ensured.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of battery detection method, battery and electronic equipment, to the battery monitoring that there is the battery core be connected in parallel, improves the security of battery.
To achieve these goals, embodiments provide a kind of battery detection method, the multiple battery core be connected in parallel of described battery, described battery control method comprises:
Charge to described battery;
Obtain the currency that one of described battery judges parameter;
Obtain a standard value of described judgement parameter;
Obtain the currency of described judgement parameter and the fiducial value of described standard value;
When described fiducial value meets predetermined condition, determine the battery core having open circuit in described battery.
Above-mentioned battery control method, wherein, also comprises after determining to have in described battery the battery core of open circuit:
Carry out control operation for battery core open circuit, ensure the safe handling of described battery.
Above-mentioned battery control method, wherein, described open circuit judges that parameter is the internal resistance of described battery and/or completely fills capacity.
Above-mentioned battery control method, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, first fiducial value corresponding to described internal resistance exceedes the first change thresholding corresponding to internal resistance, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
Above-mentioned battery control method, wherein, described fiducial value is difference or the quotient of described currency and described standard value.
Above-mentioned battery control method, wherein, the currency of the internal resistance of described battery is (open-circuit voltage that described in the closed circuit voltage one that described battery is current, battery is current)/current charging current.
Above-mentioned battery control method, wherein, described open circuit judges that the standard value of parameter is that described battery judges the value of parameter in the open circuit that last time records in charging process.
Above-mentioned battery control method, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, describedly carries out control operation for battery core open circuit and specifically comprises:
Judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
Indicate described difference to be more than or equal to described first in described first judged result completely to fill capacity threshold, close the charging/discharging function of described rechargeable battery.
Above-mentioned battery control method, wherein, describedly carries out control operation for battery core open circuit and also comprises:
Described first judged result indicate described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Indicate described difference to be more than or equal to described second in described second judged result completely to fill capacity threshold, reduce the charging current of described rechargeable battery according to described difference, otherwise it is constant to maintain current charging current.
To achieve these goals, embodiments provide a kind of battery, the multiple battery core be connected in parallel of described battery, described battery also comprises:
Charging module, for giving the charging of described battery core;
Battery chip;
First acquisition module, and for obtaining from described battery chip the currency that one of described battery judges parameter;
Second acquisition module, for obtaining a standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
Above-mentioned battery, wherein, also comprises:
Control module, for after determining to have in described battery the battery core of open circuit, carries out control operation for battery core open circuit, ensures the safe handling of described battery.
Above-mentioned battery, wherein, described open circuit judges that parameter is the internal resistance of described battery and/or completely fills capacity.
Above-mentioned battery, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
Above-mentioned battery, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
First control module, completely filling capacity threshold for indicating described difference to be more than or equal to described first in described first judged result, closing the charging/discharging function of described rechargeable battery.
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Second control module, completely filling capacity threshold for indicating described difference to be more than or equal to described second in described second judged result, reduce the charging current of described rechargeable battery, otherwise it is constant to maintain current charging current according to described difference.
To achieve these goals, embodiments provide a kind of electronic equipment, comprise a battery, the multiple battery core be connected in parallel of described battery, described electronic equipment also comprises:
Charging module, for giving the charging of described battery core;
Battery chip;
First acquisition module, and for obtaining from described battery chip the currency that one of described battery judges parameter;
Second acquisition module, for obtaining a standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
Above-mentioned electronic equipment, wherein, also comprises:
Control module, for after determining to have in described battery the battery core of open circuit, carries out control operation for battery core open circuit, ensures the safe handling of described battery.
Above-mentioned electronic equipment, wherein, described open circuit judges that parameter is the internal resistance of described battery and/or completely fills capacity.
Above-mentioned electronic equipment, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
Above-mentioned electronic equipment, wherein, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
First control module, completely filling capacity threshold for indicating described difference to be more than or equal to described first in described first judged result, closing the charging/discharging function of described rechargeable battery.
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Second control module, completely filling capacity threshold for indicating described difference to be more than or equal to described second in described second judged result, reduce the charging current of described rechargeable battery, otherwise it is constant to maintain current charging current according to described difference.
The embodiment of the present invention has following beneficial effect:
In the battery detection method of the embodiment of the present invention, in the process of battery charging, meeting Real-time Obtaining one judges the currency of parameter, and itself and standard value are compared, to judge according to comparative result the battery core whether having open circuit in described battery in time, thus make there has been a clear and definite result to the safety assurance of battery operation, improve the security of battery.
In the battery detection method of the embodiment of the present invention, when judging the battery core having open circuit in described battery, taking such as to notify user, close battery charging and discharging function, reducing the modes such as total charging current, improve the security of battery.
In the battery detection method of the embodiment of the present invention, judging the battery core having open circuit in described battery, but when battery capacity is larger, is then taking to reduce the modes such as total charging current, both ensure that the safe handling of battery, turn improve battery utilization rate.
Accompanying drawing explanation
Figure 1 shows that the schematic flow sheet of the battery detection method of the embodiment of the present invention;
Figure 2 shows that the schematic flow sheet of a kind of embody rule of the battery detection method of the embodiment of the present invention
Figure 3 shows that the structural representation of the battery of the embodiment of the present invention.
Embodiment
In the battery detection method of the embodiment of the present invention, in charging process, Real-time Obtaining one judges the value of parameter, and relatively judges whether according to the currency of this judgement parameter and standard value the situation that there is battery core open circuit, improves the security of battery.
At this, first the potential safety hazard that battery core open circuit brings is described as follows.
For a string many battery structures also, wherein there is the battery core of multiple parallel connection, and the part battery core open circuit in the battery core of multiple parallel connection, can't cause the open circuit of whole battery, whole battery still can complete power supply and electric discharge.
But for the charging of battery, it has the Secure Threshold of a charging current, if the charging current of single battery core is too high, not only can causes the reduction of battery life, and rechargeable battery when more serious, can be made to explode, jeopardize user's personal safety.
And the charge control module of prior art can not consider the open circuit conditions of battery core, understand to the fixing charging current of one, whole battery, be assumed to a, assuming that when battery is 4 battery core parallel connections, when there is no battery core open circuit, the charging current of each battery core is a/4, but when one of them battery core generation open circuit, the charging current of normal battery core is just increased to a/3, and when wherein and individual battery core generation open circuit time, the charging current of normal battery core is just increased to a/2, now will exceed the maximum charging current of battery core, occur potential safety hazard.
The battery detection method of the embodiment of the present invention, the multiple battery core be connected in parallel of described battery, as shown in Figure 1, described battery control method comprises:
Step 11, charges to described battery;
Step 12, obtains the currency that one of described battery judges parameter;
Step 13, obtains a standard value of described judgement parameter;
Step 14, obtains the currency of described judgement parameter and the fiducial value of described standard value;
Step 15, when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
In the battery detection method of the embodiment of the present invention, in the process of battery charging, meeting Real-time Obtaining one judges the currency of parameter, and itself and standard value are compared, to judge according to comparative result the battery core whether having open circuit in described battery in time, thus make there has been a clear and definite result to the safety assurance of battery operation, improve the security of battery.
In the battery control method of the embodiment of the present invention, also comprise after determining to have in described battery the battery core of open circuit:
Carry out control operation for battery core open circuit, ensure the safe handling of described battery.
At this, should carry out control operation for battery core open circuit can be output one information, and as outputting alarm sound notifies user, also can be other the control operation carried out battery, this will be described in detail later.
When determining the battery core having open circuit in described battery, then can take safety measures according to the concrete condition of open circuit and ensure the safe handling of battery, improve the security performance of battery further.
Only judge that parameter is the internal resistance of described battery and/or completely fills capacity and be described for open circuit in a particular embodiment of the present invention, but should be understood that, in a particular embodiment of the present invention, judge whether that there is battery core can be judged by other parameter, as long as the parameter that battery core open circuit can cause the parameter value of whole battery to change.
First to and/or completely filling capacity and judge that the ultimate principle of battery core open circuit is described as follows based on the internal resistance of battery.
For a string many battery structures also, wherein there is the battery core of multiple parallel connection, the internal resistance of each battery core is depended in the internal resistance of whole battery.
Assuming that the electrical property of the battery core of N number of parallel connection is identical, the internal resistance of all battery cores is R, and now, when not having battery core open circuit, the internal resistance of battery is R/N, and when M battery core generation open circuit, then R/ (N-M) is changed in the internal resistance of battery.
Can find according to above description, when there is the battery core of open circuit, the internal resistance of battery can increase, and therefore can judge whether according to this principle the situation that there is battery core open circuit.
Two basic statement parameters of battery completely fill capacity and rated voltage, and after the series connection of the battery core of same nominal voltage and rated capacity, capacity is constant, and voltage superposition, and capacity overlay after battery core parallel connection, voltage is constant.
Assuming that the electrical property of the battery core of N number of parallel connection is identical, the capacity of all battery cores is A, and now, when not having battery core open circuit, the capacity of battery is NA, and when M battery core generation open circuit, then the capacity of battery can change into (N-M) A.
Can find according to above description, when there is the battery core of open circuit, the capacity of battery can reduce, and therefore can judge whether according to this principle the situation that there is battery core open circuit.
Certainly, internal resistance and completely fill capacity can separately for judging battery core whether open circuit, and the two also can combine to judge battery core whether open circuit, certainly combine both more accurate, in this case, described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, first fiducial value corresponding to described internal resistance exceedes the first change thresholding corresponding to internal resistance, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
In a particular embodiment of the present invention, judge whether the currency of parameter and the fiducial value of described standard value meet the pre-conditioned battery core judging whether to exist open circuit according to described, at this, this fiducial value can be difference, also can be quotient (ratio), judge that parameter is respectively described below as internal resistance with open circuit.
Internal resistance as battery is under normal circumstances R/N, if current internal resistance is R/2N, then show that current internal resistance is R/2N with the difference of the internal resistance of battery under normal circumstances, it is greater than a thresholding, as R/6N, then shows the battery core having open circuit in battery.
Internal resistance as battery is under normal circumstances R/N, if current internal resistance is R/2N, then show that current internal resistance is 1/2 with the ratio of the internal resistance of battery under normal circumstances, it is less than a thresholding, as 7/8, then shows the battery core having open circuit in battery.
Can find, different manner of comparison, corresponding thresholding is also different, and differing at this one illustrates.
Mode all with the first difference in follow-up embodiment is described, but the fiducial value that quotient or other modes calculate (rate of change that the difference as currency and standard value obtains divided by standard value) also may be used for the embodiment of the present invention.
In embodiments of the present invention, need obtain the internal resistance of battery and/or completely fill the currency of capacity, can be obtained by the corresponding record read in the BMU chip of rechargeable battery after charging for the currency completely filling capacity, not elaborate at this.
And the current internal resistance of battery can obtain in the following way.
Charging current is recorded in charging process;
The closed circuit voltage that battery is current is recorded in charging process;
Disconnect the charging path of battery, the open-circuit voltage that record battery is current;
The currency of internal resistance calculating battery is: (open-circuit voltage that the current closed circuit voltage-described battery of described battery is current)/current charging current.
In embodiments of the present invention, also need the internal resistance of the battery of acquisition and/or completely fill the currency of capacity and a standard value compares, in a particular embodiment of the present invention, this open circuit judges that the standard value of parameter can by following value:
Test in advance when battery dispatches from the factory and the value recorded; Or
The value that battery records after charging complete last time.
In a particular embodiment of the present invention, also comprise after determining to have in described battery the battery core of open circuit: carry out control operation for battery core open circuit, ensure the step of the safe handling of described battery, and to carry out control operation for battery core open circuit can be the control operation directly carried out for battery, it can be accomplished in several ways, and is respectively described below.
< mode one >
The charging/discharging function of the described rechargeable battery of direct closedown, namely directly make this battery to use, this mode is the most direct.
< mode two >
For a string many batteries also, during part battery core open circuit wherein, from for electrical angle, its change be only that battery completely fills capacity, it affects cruising time, and its supply voltage is constant, that is, during part battery core open circuit wherein, battery still can give electronic equipment normal power supply, only shorten cruising time, if according to mode one directly this battery discarded, then great waste can be caused.
, mention before meanwhile, when total charging current of battery is constant, during part battery core open circuit wherein, do not have the charged electrical of the battery core of open circuit to fail to be convened for lack of a quorum increasing, can potential safety hazard be brought.
Consider above situation, in the mode two of the embodiment of the present invention, carry out control operation for battery core open circuit and comprise:
The quantity of the battery core that open circuit occurs is determined according to described fiducial value;
Reduce total charging current of battery according to the quantity of the battery core that open circuit occurs, make to flow through the charging current of the battery core not having open circuit lower than Secure Threshold.
Illustrate as follows completely to fill capacity.
Assuming that it is B that the complete battery of battery last time charging of 4 battery core parallel connections completely fills capacity, and last time, charging current was C;
After this charging terminates, what find battery expires that to fill volume change be 0.73B;
Now, a battery core generation open circuit can be judged, then by total charging current of battery from being reduced to 3C/4.
Certainly, according to described fiducial value, above-mentioned determines that the quantity of the battery core that open circuit occurs also can be judged by the internal resistance of battery, be described as follows.
Assuming that the complete internal resistance of cell of battery last time charging of 4 battery core parallel connections is R/4, and last time, charging current was E;
After this charging terminates, find that the internal resistance of battery is changed to R/2.9;
Now, also can judge a battery core generation open circuit, then by total charging current of battery from being reduced to 3C/4.
After reducing total charging current by above-mentioned mode, flow through and do not have the charging current of the battery core of open circuit still to remain on C/4, lower than Secure Threshold, battery can safe charging, and simultaneously, the battery of this generation battery core open circuit still can use, while guarantee safety, decrease waste.
< mode three >
Above-mentioned mode two can maintain the use of battery always, but consider from user perspective, battery completely fill capacity too low time, if battery also in use, will cause user to need frequent charge, bring great inconvenience to user, therefore, in mode three, considering the advantage of above two kinds of modes, deciding Subsequent secure means according to completely filling capacity.
This security means is divided into two aspects:
1, judge described completely fill capacity standard value and described difference of completely filling the currency of capacity when being more than or equal to a certain thresholding, when namely the capacity attenuation of battery is larger, directly close the charging/discharging function of described rechargeable battery;
2, judge described completely fill capacity standard value and described difference of completely filling the currency of capacity when being less than a certain thresholding, when namely the capacity attenuation of battery is not too large, now determine the adjustment of charging current according to attenuation.
Above-mentioned first aspect can be used alone, and also can combine use with second aspect.When the two combines use, describedly carry out control operation for battery core open circuit and specifically comprise:
Judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
Indicate described difference to be more than or equal to described first in described first judged result completely to fill capacity threshold, close the charging/discharging function of described rechargeable battery.
Described first judged result indicate described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Indicate described difference to be more than or equal to described second in described second judged result completely to fill capacity threshold, reduce the charging current of described rechargeable battery according to described difference, otherwise it is constant to maintain current charging current.
Figure 2 shows that the schematic flow sheet of a kind of embody rule of the battery detection method of the embodiment of the present invention, comprising:
Charging starts;
Battery management unit BMU measures charging current CC and closed circuit voltage CCV;
Battery management unit BMU charge closing switch (field effect transistor FET can be utilized to realize), measures battery open circuit voltage OCV;
Battery management unit BMU calculates the current internal resistance IR:(CCV-OCV of battery)/CC;
Judge whether the difference of IR and internal resistance standard value IR0 is greater than default IR thresholding, if not, show the battery core not having open circuit in battery, now, open charging FET, continue to charge.
If the difference of IR and internal resistance standard value IR0 is greater than default IR thresholding, the battery core of open circuit in battery, may be had as shown, now continuing to utilize and completely filling capacity to judge;
Battery management unit BMU measurement is current completely fills capacity FCC;
Judge whether FCC and the difference of completely to fill volumetric standards value FCC are greater than default first and completely fill capacity threshold, if so, then show the battery core having open circuit in battery, and capacity attenuation are comparatively large, now directly forever close discharge and recharge FET by BMU;
If FCC and the difference of completely to fill volumetric standards value FCC are less than default first completely fill capacity threshold, show that capacity attenuation is not large especially, therefore need further judgement;
Judge whether FCC and the difference of completely to fill volumetric standards value FCC are greater than default second and completely fill capacity threshold (it is less than first and completely fills capacity threshold), if, then show the battery core having open circuit in battery, but capacity attenuation is little, now can continue to use, then fill capacity FCC according to current expiring and upgrade total charging current, and open charging FET in the updated, continue to charge.
If FCC and the difference of completely to fill volumetric standards value FCC are less than or equal to default second completely fill capacity threshold, then show the battery core not having open circuit in battery, now directly open charging FET, continue to charge.
The embodiment of the present invention also comprises a kind of battery, the multiple battery core be connected in parallel of described battery, and as shown in Figure 3, described battery also comprises:
Charging module (not shown), for giving the charging of described battery core;
Battery chip (not shown);
First acquisition module, and for obtaining from described battery chip the currency that one of described battery judges parameter;
Second acquisition module, for obtaining a standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
The battery of the embodiment of the present invention, after determining to have in described battery the battery core of open circuit, also carries out control operation by control module for battery core open circuit, ensures the safe handling of described battery.
Described open circuit judges that parameter is the internal resistance of described battery and/or completely fills capacity.
Described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
Described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
First control module, completely filling capacity threshold for indicating described difference to be more than or equal to described first in described first judged result, closing the charging/discharging function of described rechargeable battery.
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Second control module, completely filling capacity threshold for indicating described difference to be more than or equal to described second in described second judged result, reduce the charging current of described rechargeable battery, otherwise it is constant to maintain current charging current according to described difference.
The function of above-mentioned modules/unit can be realized by the battery management unit BMU of battery, but also can realize separately.
The embodiment of the present invention also provides a kind of electronic equipment, comprises a battery, the multiple battery core be connected in parallel of described battery, and described electronic equipment also comprises:
Charging module, for giving the charging of described battery core;
Battery chip;
First acquisition module, and for obtaining from described battery chip the currency that one of described battery judges parameter;
Second acquisition module, for obtaining a standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
The electronic equipment of the embodiment of the present invention, after determining to have in described battery the battery core of open circuit, also carries out control operation by control module for battery core open circuit, ensures the safe handling of described battery.
Described open circuit judges that parameter is the internal resistance of described battery and/or completely fills capacity.
Described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
Described open circuit judges that parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
First control module, completely filling capacity threshold for indicating described difference to be more than or equal to described first in described first judged result, closing the charging/discharging function of described rechargeable battery.
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge described difference whether be more than or equal to one preset second completely fill capacity threshold, obtain one second judged result;
Second control module, completely filling capacity threshold for indicating described difference to be more than or equal to described second in described second judged result, reduce the charging current of described rechargeable battery, otherwise it is constant to maintain current charging current according to described difference.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. a battery detection method, the multiple battery core be connected in parallel of described battery, it is characterized in that, described battery detection method comprises:
Charge to described battery;
Obtain the currency of the judgement parameter of described battery, the parameter that when described judgement parameter is battery core open circuit, value can change;
Obtain the standard value of described judgement parameter;
Obtain the currency of described judgement parameter and the fiducial value of described standard value;
When described fiducial value meets predetermined condition, determine the battery core having open circuit in described battery.
2. battery detection method according to claim 1, is characterized in that, also comprises after determining to have in described battery the battery core of open circuit:
Carry out control operation for battery core open circuit, ensure the safe handling of described battery.
3. battery detection method according to claim 1 and 2, is characterized in that, described judgement parameter is the internal resistance of described battery and/or completely fills capacity.
4. battery detection method according to claim 3, it is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, first fiducial value corresponding to described internal resistance exceedes the first change thresholding corresponding to internal resistance, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
5. battery detection method according to claim 4, it is characterized in that, described first fiducial value is difference or the quotient of the currency of described internal resistance and the standard value of described internal resistance, and described second fiducial value is describedly completely fill the currency of capacity and described difference or the quotient completely filling the standard value of capacity.
6. battery detection method according to claim 1 and 2, it is characterized in that, described judgement parameter is the internal resistance of described battery or the internal resistance of described battery and completely fills capacity, and the currency of the internal resistance of described battery is: (open-circuit voltage that the current closed circuit voltage-described battery of described battery is current)/current charging current.
7. battery detection method according to claim 1, is characterized in that, the standard value of described judgement parameter is:
Test in advance when described battery dispatches from the factory and the value recorded; Or
The value of the judgement parameter that described battery recorded in charging process in last time.
8. battery detection method according to claim 2, is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, describedly carries out control operation for battery core open circuit and specifically comprises:
Judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to one preset first completely fill capacity threshold, obtain the first judged result;
Described first judged result indicate described difference be more than or equal to described first completely fill capacity threshold time, close the charging/discharging function of described battery.
9. battery detection method according to claim 8, is characterized in that, describedly carries out control operation for battery core open circuit and also comprises:
Described first judged result indicate described difference be less than described first completely fill capacity threshold time, judge whether described difference is more than or equal to default second and completely fills capacity threshold, obtains the second judged result;
Described second judged result indicate described difference be more than or equal to described second completely fill capacity threshold time, reduce the charging current of described battery according to described difference, otherwise it is constant to maintain current charging current.
10. a battery, the multiple battery core be connected in parallel of described battery, it is characterized in that, described battery also comprises:
Charging module, for giving the charging of described battery core;
Battery chip;
First acquisition module, with the currency of the judgement parameter for obtaining described battery from described battery chip; The parameter that when described judgement parameter is battery core open circuit, value can change;
Second acquisition module, for obtaining the standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
11. batteries according to claim 10, is characterized in that, also comprise:
Control module, for after determining to have in described battery the battery core of open circuit, carries out control operation for battery core open circuit, ensures the safe handling of described battery.
12. batteries according to claim 10 or 11, it is characterized in that, described judgement parameter is the internal resistance of described battery and/or completely fills capacity.
13. batteries according to claim 12, it is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
14. batteries according to claim 11, is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to default first and completely fill capacity threshold, obtain the first judged result;
First control module, for indicate in described first judged result described difference be more than or equal to described first completely fill capacity threshold time, close the charging/discharging function of described battery;
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge whether described difference is more than or equal to default second and completely fills capacity threshold, obtains the second judged result;
Second control module, for indicate in described second judged result described difference be more than or equal to described second completely fill capacity threshold time, reduce the charging current of described battery according to described difference, otherwise it is constant to maintain current charging current.
15. 1 kinds of electronic equipments, comprise battery, the multiple battery core be connected in parallel of described battery, and it is characterized in that, described electronic equipment also comprises:
Charging module, for giving the charging of described battery core;
Battery chip;
First acquisition module, with the currency of the judgement parameter for obtaining described battery from described battery chip; The parameter that when described judgement parameter is battery core open circuit, value can change;
Second acquisition module, for obtaining the standard value of described judgement parameter;
Comparison module, for the fiducial value of the currency and described standard value that obtain described judgement parameter;
Determination module, for when described fiducial value meets predetermined condition, determines the battery core having open circuit in described battery.
16. electronic equipments according to claim 15, is characterized in that, also comprise:
Control module, for after determining to have in described battery the battery core of open circuit, carries out control operation for battery core open circuit, ensures the safe handling of described battery.
17. electronic equipments according to claim 15 or 16, it is characterized in that, described judgement parameter is the internal resistance of described battery and/or completely fills capacity.
18. electronic equipments according to claim 17, it is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, described determination module is used for exceeding the first change thresholding corresponding to internal resistance at the first fiducial value that described internal resistance is corresponding, and described the second fiducial value corresponding to capacity that completely fill exceedes when completely filling the second change thresholding corresponding to capacity, determines to exist in described multiple battery core be connected in parallel the battery core of open circuit occurs.
19. electronic equipments according to claim 16, is characterized in that, described judgement parameter is the internal resistance of described battery and completely fills capacity, and described control module specifically comprises:
First judging unit, for judge described completely fill capacity standard value and described difference of completely filling the currency of capacity whether be more than or equal to default first and completely fill capacity threshold, obtain the first judged result;
First control module, for indicate in described first judged result described difference be more than or equal to described first completely fill capacity threshold time, close the charging/discharging function of described battery;
Second judging unit, for indicate in described first judged result described difference be less than described first completely fill capacity threshold time, judge whether described difference is more than or equal to default second and completely fills capacity threshold, obtains one second judged result;
Second control module, for indicate in described second judged result described difference be more than or equal to described second completely fill capacity threshold time, reduce the charging current of described battery according to described difference, otherwise it is constant to maintain current charging current.
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| CN104753126B (en) * | 2013-12-31 | 2017-08-29 | 南京德朔实业有限公司 | Battery bag, charging combination and electric tool |
| CN104062599A (en) * | 2014-07-10 | 2014-09-24 | 海芝通电子(深圳)有限公司 | Mobile phone battery detection method |
| CN106100012A (en) * | 2016-06-08 | 2016-11-09 | 深圳市金立通信设备有限公司 | Battery, terminal and charging method |
| CN106329636A (en) * | 2016-09-06 | 2017-01-11 | 深圳市金立通信设备有限公司 | Battery, terminal and charging method |
| CN108872860A (en) * | 2018-03-27 | 2018-11-23 | 维沃移动通信有限公司 | The battery cell monitoring method and mobile terminal of mobile terminal |
| CN108987828A (en) * | 2018-07-18 | 2018-12-11 | 北汽福田汽车股份有限公司 | Battery management system, vehicle and its welding battery method for detecting abnormality, device |
| CN110749829B (en) * | 2019-10-22 | 2022-02-11 | 东软睿驰汽车技术（沈阳）有限公司 | Power supply equipment abnormality detection method and device |
| CN112655129A (en) * | 2020-05-06 | 2021-04-13 | 深圳市大疆创新科技有限公司 | Method and device for determining battery power supply condition, battery and movable platform |
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