CN106324525A - Detecting method and device for battery - Google Patents
Detecting method and device for battery Download PDFInfo
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- CN106324525A CN106324525A CN201610888891.8A CN201610888891A CN106324525A CN 106324525 A CN106324525 A CN 106324525A CN 201610888891 A CN201610888891 A CN 201610888891A CN 106324525 A CN106324525 A CN 106324525A
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- battery
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- status information
- charging current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
Abstract
The embodiment of the invention provides a detecting method and device for battery. The detecting method for battery provided in the embodiment of the invention comprises collecting the charging duration of the battery charging current reaching the cut-off charging current during the Mth constant voltage charge and Nth constant voltage charge. M and N are integers exceeding 1 or equaling to 1, and N is larger than M; the status of battery is determined based on the charging duration and charging times. The device determines whether the battery is safe according to data information of battery detected immediately in the course of battery charging for many times with high detection efficiency, so as to further improve the safety of battery.
Description
Technical field
The present invention relates to cell art, particularly relate to detection method and the device of a kind of battery.
Background technology
Along with development and the enhancing of people's environmental consciousness of modern society, increasing new forms of energy are developed and profit
With, the energy, after exploitation, utilizes the battery as storage medium more and stores.Such as, use battery as the automobile of power,
Use lithium ion battery as the terminal etc. of power.Owing to user is more and more higher to the performance requirement of battery so that how to improve
The stability of battery and safety, become the problem needing research in producing cell process.
In prior art, owing to being limited by technological level, battery in use there will be the phenomenon of short circuit, logical
In the case of Chang, the main cause of battery short circuit is caused to have pole piece analysis lithium, inside battery assembly to have substandard products etc..Battery is being short-circuited
After, the voltage of battery can decline, and causes the temperature of battery to raise, has the danger of blast time serious.
Therefore, in realizing process of the present invention, inventor finds the method detecting battery security in prior art, not
Can the most effectively reflect battery whether safety, therefore, lack a kind of method that can detect battery whether safety accurately.
Summary of the invention
The present invention provides detection method and the device of a kind of battery, by battery charging process, detecting battery
Data message determines battery whether safety, improves detection efficiency, and then improves the safety of battery.
The present invention provides the detection method of a kind of battery, it is characterised in that including:
Collection battery is during the M time constant-voltage charge process and n-th constant-voltage charge, and the charging current of described battery reaches
To charging duration during cut-off charging current, M Yu N is the integer more than or equal to 1, and N is more than M；
According to described charging duration and charging times, determine the status information of described battery.
Further, in said method, according to described charging duration and charging times, determine the status information of described battery
Before, described method also includes:
Calculate first difference of described N and described M；
Calculating described battery during n-th constant-voltage charge, the charging current of described battery reaches to end charging current
Time charging duration, with described battery during the M time constant-voltage charge, the charging current of described battery reach end charged electrical
Second difference of charging duration during stream；
Described determine the status information of described battery according to described charging duration and charging times, including:
According to the ratio of described second difference Yu described first difference, determine the status information of described battery.
Further, in said method, according to the ratio of described second difference Yu described first difference, determine described battery
Status information, including:
When described ratio is less than threshold value, obtaining the first status information, described first status information is used for representing described electricity
Pond safety；
When described ratio is more than or equal to threshold value, obtaining the second status information, described second status information is used for table
Show that described battery is dangerous.
Further, in said method, described method also includes:
If obtaining the second status information, the described battery main body to described battery place sends alarm signal.
Further, in said method, it is characterised in that described battery is lithium ion battery, described threshold value in the range of
0.3～0.4.The present invention also provides for the detection device of a kind of battery, including:
Acquisition module, is used for gathering battery during the M time constant-voltage charge process with n-th constant-voltage charge, described electricity
The charging current in pond reaches to end charging duration during charging current, M Yu N is the integer more than or equal to 1, and N is more than
M；
Determine module, for according to described charging duration and charging times, determine the status information of described battery.
Further, in said apparatus, described device also includes:
First computing module, for calculating first difference of described N and described M；
Second computing module, is used for calculating described battery during n-th constant-voltage charge, the charging current of described battery
Reach to end charging duration during charging current, with described battery during the M time constant-voltage charge, the charged electrical of described battery
Second difference of the duration that charges when stream reaches to end charging current；
Described determine module, specifically for:
According to the ratio of described second difference Yu described first difference, determine the status information of described battery.
Further, in said apparatus, described determine module, specifically for:
When described ratio is less than threshold value, obtaining the first status information, described first status information is used for representing described electricity
Pond safety；
When described ratio is more than or equal to threshold value, obtaining the second status information, described second status information is used for table
Show that described battery is dangerous.
Further, in said apparatus, described device also includes:
Alarm module, if for obtaining the second status information, the described battery main body to described battery place sends warning
Signal.
Further, in said apparatus, it is characterised in that described battery is lithium ion battery, described threshold value in the range of
0.3～0.4.
The detection method of battery of the present invention and device, by collection battery during the M time constant-voltage charge, filling of battery
Electricity electric current reaches to end charging duration TM during charging current, and collection battery is during n-th constant-voltage charge, battery
Charging current reaches to end charging duration TN during charging current, then by calculating charging duration TM, charging duration TN and filling
Electricity quantitative relation between number of times M, charging times N, determines the status information of battery, in order to determine that battery is in charging process
No safety, the technical scheme that the present invention provides, during repeatedly charging for battery, according to the number of the battery immediately detected
It is believed that breath to determine battery whether safety, the detection cycle is shorter, and detection efficiency is high, and then improves the safety of battery.Therefore,
Solve and prior art lacks a kind of problem that can detect the safest method of battery accurately.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The flow chart of the detection method embodiment one of the battery that Fig. 1 provides for the embodiment of the present invention；
In the battery charging process that Fig. 2 provides for the embodiment of the present invention, charging current-charging voltage-charging interval relation
Figure；
In the battery charging process that Fig. 3 provides for the embodiment of the present invention, charging interval and charging current graph of a relation；
The flow chart of the detection method embodiment two of the battery that Fig. 4 provides for the embodiment of the present invention；
The flow chart of the detection method embodiment three of the battery that Fig. 5 provides for the embodiment of the present invention；
The structural representation of the detection device embodiment one of the battery that Fig. 6 provides for the embodiment of the present invention；
The structural representation of the detection device embodiment two of the battery that Fig. 7 provides for the embodiment of the present invention；
The structural representation of the detection device embodiment three of the battery that Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Embodiment one
The flow chart of the detection method embodiment one of the battery that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, this
The detection method of the battery that bright embodiment provides, specifically may include steps of:
101, collection battery is during the M time constant-voltage charge process and n-th constant-voltage charge, and the charging current of battery reaches
To charging duration during cut-off charging current, M Yu N is the integer more than or equal to 1, and N is more than M.
Battery, after generation completes, needs to load the main body being powered, and user i.e. represents the when of using main body
Battery begins to use, and battery in use, is divided into charging process and discharge process.One charging process and one discharged
Journey is expressed as a circulation, and battery, can be because changing between electrolyte and the pole piece of its internal battery core after being recycled for multiple times
Learn reaction and break down, such as short circuit.After failure, the danger of blast will be there is in battery, accordingly, it would be desirable to the moment
Safety to battery detects.
Under normal circumstances, in discharge process, can there is the situation that dump energy is not enough in battery, needs to use external charging
Equipment is that battery is charged.In the battery charging process that Fig. 2 provides for the embodiment of the present invention, charging current-charging voltage-fill
Electricity time chart, as in figure 2 it is shown, battery can include two stages in charging process, first stage is constant-current charge,
Along with the carrying out of charging, the voltage of battery gradually rises, and after the voltage of battery reaches blanking voltage, entering second stage is
Constant-voltage charge.Battery is during constant-voltage charge, and charging current can be gradually reduced, until cut-off charging current.
It should be noted that cut-off charging current mentioned in the embodiment of the present invention, by user according to different structures,
The battery of different model is set respectively, does not do concrete restriction at this.
In order to the status information of battery can be differentiated accurately, in embodiments of the present invention, employing contrasts not homogeneous circulation
The mode of battery data information.Therefore, when charging for battery every time, all collection batteries during constant-voltage charge, battery
Charging current reach end charging current charging duration.Illustrating for convenience, take the M time and n-th, M with N is
Integer more than or equal to 1, and N is more than M, i.e. battery, during the M time constant-voltage charge, gathers the charging current of battery
Reaching to end charging duration TM during charging current, battery is during n-th constant-voltage charge, and the charging current gathering battery reaches
To charging duration TN during cut-off charging current.
It is understood that in embodiments of the present invention, the data message collected can record battery in the battery
In management system, it is also possible to record is in miscellaneous part, such as in memorizer.
102, according to charging duration and charging times, the status information of battery is determined.
Battery under unfaulty conditions it can be understood as in the secure state, along with battery is at the M time constant-voltage charge and
During n times constant-voltage charge, the difference of TN Yu TM can be zero, it is also possible to for negative value, it is also possible to on the occasion of.Therefore, at one
During concrete implementation, a reference value can be preset as threshold value, then according to charging duration and charging times, really
Determine the status information of battery.
In embodiments of the present invention, the status information of battery can include that cell safety, battery are dangerous, or battery event
Barrier, battery are normal.
Such as, battery during the 3rd constant-voltage charge, the T3=300 second, battery during the 5th constant-voltage charge, T5
=300 seconds, T3=T5, it is determined that the status information battery of battery is in a safe condition.
It is understood that the detection method of the battery in the embodiment of the present invention, can be in battery second time cyclic process
In, it is possible to the status information of battery is determined.In the battery charging process that Fig. 3 provides for the embodiment of the present invention, charging
Time and charging current graph of a relation, as it is shown on figure 3, during the recycling of same battery, three perseverances that be recorded
Data in pressure charging process, respectively, the 322nd constant-voltage charge process, the 347th constant-voltage charge process, the 372nd constant voltage
Charging process.From figure, it can be seen that along with the increase of cycle-index, battery during constant-voltage charge, the charged electrical of battery
Stream reaches to end the charging duration of charging current and gradually lengthens, and therefore, the status information of battery is changing, therefore can be true
Determine the status information of battery.
The detection method of battery of the present invention, by collection battery during the M time constant-voltage charge, the charging current of battery
Reach to end charging duration TM during charging current, and collection battery is during n-th constant-voltage charge, the charged electrical of battery
Stream reaches to end charging duration TN during charging current, then by calculating charging duration TM, charging duration TN and charging times
Quantitative relation between M, charging times N, determines the status information of battery, in order to determine whether battery pacifies in charging process
Entirely, the technical scheme that the present invention provides, during repeatedly charging for battery, believe according to the data of the battery immediately detected
Breath determines battery whether safety, and the detection cycle is shorter, and detection efficiency is high, and then improves the safety of battery.Therefore, solve
The problem lacking a kind of method that can detect battery whether safety accurately in prior art.
Embodiment two
The flow chart of the detection method embodiment two of the battery that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, this
The detection method of the battery that bright embodiment provides, specifically may include steps of:
201, collection battery is during the M time constant-voltage charge process and n-th constant-voltage charge, and the charging current of battery reaches
To charging duration during cut-off charging current, M Yu N is the integer more than or equal to 1, and N is more than M.
202, first difference of N Yu M is calculated.
In embodiments of the present invention, in order to improve the accuracy of testing result, M with N can differ 1, it is also possible to phase
Difference Q, Q are the integer more than 1.Because N is more than M, so, the first difference=N-M.
203, calculate battery during n-th constant-voltage charge, the charging current of battery reach end charging current time
Charging duration, with battery during the M time constant-voltage charge, the charging current of battery reach cut-off charging current time charging time
The second long difference.
Battery is during the M time constant-voltage charge, and the charging current of collection battery reaches to end charging during charging current
Duration TM, battery during n-th constant-voltage charge, gather battery charging current reach end charging current time charging time
Long TN, the second difference=TN-TM.Accordingly, the second difference is charged during can being adjacent twice constant-voltage charge the difference of duration
Value, it is also possible to be the difference of duration of charging during twice constant voltage of not jingle bell is filled.
204, according to the ratio of the second difference Yu the first difference, the status information of battery is determined.
Integrating step 202 and the result of calculation in step 203, in step 204, ratio=(TN-TM)/(N-M), one
During individual concrete implementation, the threshold value reference value as the status information determining battery can be preset, then can root
According to the relation between ratio and default threshold value, determine the status information of battery.
Such as, battery during the 3rd constant-voltage charge, the T3=300 second, battery during the 5th constant-voltage charge, T5
=300 seconds, the first difference=N-M=5-3=2, the second difference=TN-TM=300-300=0, ratio=(TN-TM)/(N-M)
=0.
The most such as, battery is during the 10th constant-voltage charge, and the T3=310 second, battery is in the 5th constant-voltage charge process
In, the T5=300 second, the first difference=N-M=10-5=5, the second difference=TN-TM=310-300=10, ratio=(TN-
TM)/(N-M)=2.
The detection method of battery of the present invention, by the ratio of the second difference Yu the first difference, determines the state letter of battery
Breath, in order to determine battery whether safety in charging process, the technical scheme that the present invention provides, in the mistake repeatedly charged for battery
Cheng Zhong, determines battery whether safety according to the data message of the battery immediately detected, the detection cycle is shorter, detection efficiency
Height, and then improve the safety of battery.
Embodiment three
The flow chart of the detection method embodiment three of the battery that Fig. 5 provides for the embodiment of the present invention, as it is shown in figure 5, this
The detection method of the battery that bright embodiment provides, specifically may include steps of:
301, collection battery is during the M time constant-voltage charge process and n-th constant-voltage charge, and the charging current of battery reaches
To charging duration during cut-off charging current, M Yu N is the integer more than or equal to 1, and N is more than M.
302, first difference of N Yu M is calculated.
303, calculate battery during n-th constant-voltage charge, the charging current of battery reach end charging current time
Charging duration, with battery during the M time constant-voltage charge, the charging current of battery reach cut-off charging current time charging time
The second long difference.
304, calculate the ratio of the second difference and the first difference, when ratio is less than threshold value, perform step 305；Work as ratio
During more than or equal to threshold value, perform step 306.
During a concrete implementation, threshold value can be the numerical value that user draws according to substantial amounts of experimental data, also
Can be that user is according to the numerical value of the character setting of battery core in different model battery.
It should be noted that due in battery the model of battery core and character different, its corresponding threshold value is also different,
In embodiments of the present invention, when battery is lithium ion battery, threshold value is in the range of 0.3～0.4.
305, obtaining the first status information, the first status information is used for representing cell safety.
In embodiments of the present invention, the status information of battery includes the first status information and the second status information, wherein,
One status information is used for representing cell safety, therefore, when ratio is less than threshold value, after obtaining the first status information, it is possible to understand that
For cell safety.
306, obtaining the second status information, the second status information is used for representing that battery is dangerous, performs step 307.
In embodiments of the present invention, the status information of battery includes the first status information and the second status information, wherein,
And status information is used for representing that battery is dangerous, therefore, when ratio is more than or equal to threshold value, the second status information is obtained
It is rear it can be understood as battery is dangerous.
307, battery sends alarm signal to the main body at battery place.
After determining that battery is dangerous, battery the main body to battery place can send alarm signal, notifies corresponding main body
Battery failure, needs to be replaced in time, or notifies corresponding main body, and battery exists the danger of blast, please in time away from
Main body.
During a concrete implementation, alarm signal can be signal lights prompting, voice message, warning tones prompting,
Text prompt etc..
Such as, user, in the process charged for mobile terminal, detects that battery is dangerous, and then battery can be to battery place
Mobile terminal send alarm signal, there is explosion danger in prompting battery, please user in time away from this mobile terminal.
The most such as, user, for using battery as the process of the charging electric vehicle of power resources, detects that battery goes out
Existing fault, battery can send alarm signal to the vehicle at battery place, and prompting user changes battery in time.
In embodiments of the present invention, the setting to threshold value can be illustrated.
Example one
Selecting from untapped 10 lithium ion batteries, the anode active material of each battery is graphite, cathode activity thing
Matter is cobalt acid lithium, and each lithium ion battery is used in mobile terminal.It is numbered for each lithium ion battery, respectively 1
Number～No. 10, wherein, in the battery core of No. 7 batteries and No. 8 batteries add easily cause battery core short circuit composition.Use lithium ion battery
Circulation test device does the test of simulating mobile terminal recharge-discharge for each battery simultaneously, and records each battery respectively and exist
Current value, magnitude of voltage and time value during loop test.Experimental data is as shown in table 1, and wherein, blanking voltage is that constant voltage is filled
The magnitude of voltage of electricity, cut-off charging current is battery minima of electric current during constant-voltage charge, and CV1 is that the 101st constant voltage is filled
In electric process, charging current reaches to end charging duration during charging current, during CV2 is the 126th constant-voltage charge, and charging
Electric current reaches to end charging duration during charging current, and during CV3 is the 151st constant-voltage charge, charging current reaches cut-off
Charging duration during charging current.
Table 1
During experiment, 7,8 two battery cores all occur overheated, on fire dangerous in the 151st test process
State, and the ratio of ratio all significantly greater than other battery cores.
In this experimentation, threshold value can choose the minima of the data value of the unsafe condition of generation, i.e. threshold value
It is 0.6.
Example two
Selecting from untapped 5 lithium ion batteries, the anode active material of each battery is graphite, cathode active material
For cobalt acid lithium, and each lithium ion battery is used in mobile terminal.It is numbered for each lithium ion battery, respectively No. 1
～No. 5, wherein, the battery core of No. 1 and No. 4 battery is added the composition easily causing battery core short circuit.Lithium ion battery circulation is used to survey
Electricity testing device does the test of simulating mobile terminal recharge-discharge for each battery simultaneously, and records each battery respectively in circulation survey
Current value, magnitude of voltage and time value during examination.Experimental data is as shown in table 2, and wherein, CV1 is the 100th constant-voltage charge mistake
Cheng Zhong, charging current reaches to end charging duration during charging current, during CV2 is the 110th constant-voltage charge, charging current
Reaching to end charging duration during charging current, during CV3 is the 120th constant-voltage charge, charging current reaches cut-off charging
Charging duration during electric current, by that analogy.
Table 2
During experiment, there is uneasiness overheated, on fire in No. 1 and No. 4 two battery cores in the 180th test process
Total state, and the ratio of ratio all significantly greater than other battery cores.
In this experimentation, threshold value can choose the minima of the data value of the unsafe condition of generation, i.e. threshold value
It is 0.375.
The detection method of battery of the present invention, by the ratio of the second difference Yu the first difference, determines the state letter of battery
Breath, in order to determine battery whether safety in charging process, then under determining that battery is in non-secure states, battery is to battery
The main body at place sends alarm signal, the technical scheme that the present invention provides, during repeatedly charging for battery, according to immediately
The data message of the battery detected is to determine battery whether safety, and the detection cycle is shorter, and detection efficiency is high, improves battery
Safety.
Embodiment four
The structural representation of the detection device embodiment one of the battery that Fig. 6 provides for the embodiment of the present invention, as shown in Figure 6,
The detection device of the battery that the embodiment of the present invention provides, may include that acquisition module 11 and determines module 12.
Acquisition module 11, is used for gathering battery during the M time constant-voltage charge process with n-th constant-voltage charge, battery
Charging current charging duration when reaching to end charging current, M Yu N is the integer more than or equal to 1, and N is more than M；
Determine module 12, for the charging duration gathered according to acquisition module 11 and charging times, determine the state of battery
Information.
The device of the present embodiment, may be used for performing the technical scheme of embodiment of the method shown in Fig. 1, and it realizes principle and skill
Art effect is similar to, and here is omitted.
Embodiment five
The structural representation of the detection device embodiment two of the battery that Fig. 7 provides for the embodiment of the present invention, as it is shown in fig. 7,
The detection device of the battery that the embodiment of the present invention provides is on the basis of embodiment four, it is also possible to including: the first computing module 13
With the second computing module 14.
First computing module 13, for calculating first difference of N Yu M；
Second computing module 14, is used for calculating battery during n-th constant-voltage charge, and the charging current of battery reaches to cut
Only charging duration during charging current, with battery during the M time constant-voltage charge, the charging current of battery reaches cut-off charging
Second difference of charging duration during electric current；
Determine module 12, specifically for:
The ratio of the first difference that the second difference calculated according to the second computing module 14 calculates with the first computing module 13,
Determine the status information of battery.
The device of the present embodiment, may be used for performing the technical scheme of embodiment of the method shown in Fig. 3, and it realizes principle and skill
Art effect is similar to, and here is omitted.
Embodiment six
The structural representation of the detection device embodiment three of the battery that Fig. 8 provides for the embodiment of the present invention, as shown in Figure 8,
The detection device of the battery that the embodiment of the present invention provides is on the basis of embodiment five, it is also possible to including: alarm module 15.
Determine module 12, specifically for:
When ratio is less than threshold value, obtaining the first status information, the first status information is used for representing cell safety；
When ratio is more than or equal to threshold value, obtaining the second status information, the second status information is used for representing that battery is not
Safety.
Alarm module 15, for if it is determined that module 12 obtains the second status information, the battery main body to battery place sends
Alarm signal.
It should be noted that in the present invention is embodiment, described battery is lithium ion battery, the scope of described threshold value
It is 0.3～0.4.The device of the present embodiment, may be used for performing the technical scheme of embodiment of the method shown in Fig. 4, and it realizes principle
Similar with technique effect, here is omitted.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. the detection method of a battery, it is characterised in that including:
Collection battery is during the M time constant-voltage charge process and n-th constant-voltage charge, and the charging current of described battery reaches to cut
Only charging duration during charging current, M Yu N is the integer more than or equal to 1, and N is more than M；
According to described charging duration and charging times, determine the status information of described battery.
Method the most according to claim 1, it is characterised in that according to described charging duration and charging times, determines described
Before the status information of battery, described method also includes:
Calculate first difference of described N and described M；
Calculate described battery during n-th constant-voltage charge, when the charging current of described battery reaches to end charging current
Charging duration, with described battery during the M time constant-voltage charge, when the charging current of described battery reaches to end charging current
Charging duration the second difference；
Described determine the status information of described battery according to described charging duration and charging times, including:
According to the ratio of described second difference Yu described first difference, determine the status information of described battery.
Method the most according to claim 2, it is characterised in that according to the ratio of described second difference with described first difference
Value, determines the status information of described battery, including:
When described ratio is less than threshold value, obtaining the first status information, described first status information is used for representing that described battery is pacified
Entirely；
When described ratio is more than or equal to threshold value, obtaining the second status information, described second status information is used for representing institute
State battery dangerous.
Method the most according to claim 3, it is characterised in that described method also includes:
If obtaining the second status information, the described battery main body to described battery place sends alarm signal.
5. according to the method described in claim 3 or 4, it is characterised in that described battery is lithium ion battery, the model of described threshold value
Enclose is 0.3～0.4.
6. the detection device of a battery, it is characterised in that including:
Acquisition module, is used for gathering battery during the M time constant-voltage charge process with n-th constant-voltage charge, described battery
Charging current reaches to end charging duration during charging current, M Yu N is the integer more than or equal to 1, and N is more than M；
Determine module, for according to described charging duration and charging times, determine the status information of described battery.
Device the most according to claim 6, it is characterised in that described device also includes:
First computing module, for calculating first difference of described N and described M；
Second computing module, is used for calculating described battery during n-th constant-voltage charge, and the charging current of described battery reaches
Charging duration during cut-off charging current, with described battery during the M time constant-voltage charge, the charging current of described battery reaches
The second difference to charging duration during cut-off charging current；
Described determine module, specifically for:
According to the ratio of described second difference Yu described first difference, determine the status information of described battery.
Device the most according to claim 7, it is characterised in that described determine module, specifically for:
When described ratio is less than threshold value, obtaining the first status information, described first status information is used for representing that described battery is pacified
Entirely；
When described ratio is more than or equal to threshold value, obtaining the second status information, described second status information is used for representing institute
State battery dangerous.
Device the most according to claim 8, it is characterised in that described device also includes:
Alarm module, if for obtaining the second status information, the described battery main body to described battery place sends alarm signal.
10. according to the device described in claim 7 or 8, it is characterised in that described battery is lithium ion battery, described threshold value
Scope is 0.3～0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888891.8A CN106324525B (en) | 2016-10-12 | 2016-10-12 | The detection method and device of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888891.8A CN106324525B (en) | 2016-10-12 | 2016-10-12 | The detection method and device of battery |
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| WO2021063273A1 (en) * | 2019-09-30 | 2021-04-08 | Oppo广东移动通信有限公司 | Method and apparatus for detecting short circuit in battery, and electronic device |
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| CN112345944A (en) * | 2020-10-23 | 2021-02-09 | Oppo广东移动通信有限公司 | Battery abnormality detection method, apparatus, electronic device, and computer-readable storage medium |
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