CN108196189A - A kind of method and apparatus for detecting double cell product battery exception - Google Patents
A kind of method and apparatus for detecting double cell product battery exception Download PDFInfo
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- CN108196189A CN108196189A CN201711123976.8A CN201711123976A CN108196189A CN 108196189 A CN108196189 A CN 108196189A CN 201711123976 A CN201711123976 A CN 201711123976A CN 108196189 A CN108196189 A CN 108196189A
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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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The invention discloses a kind of method and apparatus for detecting double cell product battery exception.This method includes：The current voltage of double cell product is detected, when the current voltage detected is in predeterminated voltage section, detection duration is determined, and start charging detection to double cell product according to current voltage；In determining detection duration, repeated detection is carried out to the voltage of the double cell product in charging, records the voltage value detected every time and corresponding charging duration；One linearity curve is fitted according to multigroup record of voltage value and charging duration, it is abnormal with the presence or absence of monocell according to the slope detection double cell product of the linearity curve fitted.Compared with the prior art, the present invention can be realized without additional cell voltage management and control chip and carry out intelligent measurement extremely to the battery of double cell product, effectively eliminate security risk caused by due to not finding monocell exception in time, and save the arrangement space of circuit control panel, production cost is reduced, promotes user experience.
Description
Technical field
The present invention relates to battery detecting fields, and in particular to a kind of method and dress for detecting double cell product battery exception
It puts.
Background technology
Bluetooth headset is carried out data transmission using wireless transmission method, eliminates the constraint of wire rod, ease of use is significantly
It is promoted.By development for many years, bluetooth headset has become the fashion elements in earphone products, receives praises from customers.It is blue at present
In tooth earphone class product, most popular trend is kinetic characteristic, i.e., light, comfortable wearing anti-dropout, the anti-sweat of waterproof, preferably while
Have the multiple sensors such as heart rate detection to monitor the physical function of user.
Slim and graceful in order to achieve the purpose that wear, sports type bluetooth headset is mostly using thin wire connection wired control box and ears ear
Plug, if using wired control box mode, the size and weight of wired control box are required for strictly controlling.In this bluetooth sports earphones
The set-up mode of battery is that monoblock battery is set in wired control box, and then thin wire connection wired control box is used to be supplied for bluetooth headset
Electricity.In the safety for detecting battery charging function, can only need to detect the monoblock battery charge normal.This battery is set
The shortcomings that putting mode is that monoblock battery occupied space is larger, leads to that wired control box is oversized, weight is excessively high, influences bluetooth headset
Wearing effect and beauty, reduce user experience.
A kind of double cell bluetooth sports earphones are proposed at present, battery is divided into two, and are separately positioned in the earplug of left and right,
It is connected using parallel way, has both reduced the size and weight of wired control box, in turn ensure earphone wearing effect and symmetry.But
Monocell bluetooth sports earphones battery security still is rested on for the detection of double cell bluetooth sports earphones battery security
Detection on, can only detect whether two batteries can charge normal simultaneously, and have ignored monocell and the place of abnormal conditions occur
Reason.When two pieces of batteries charge normal, every piece of battery can bear filling for 1C (such as battery capacity being 50mA, then 1C represents 50mA)
Electric current；When one of cell damage, then unspoiled battery is equivalent to the charging current for affording 2C, such case hair
When raw, gently then battery life is caused to decline rapidly, it is heavy then cause excessive heating or even the consequence of damage earphone.Therefore, detection is double
Whether the battery of battery earphone is abnormal very necessary.
In order to detect the battery of double cell product exception, the way of generally use is to increase additional cell voltage management and control core
Piece carries out intelligent monitoring to each battery.The drawbacks of this way, is：Hardware design is increased, expands circuit control
The arrangement space of plate, and then small product size is increased, increase production cost, reduce user experience.
Invention content
The prior art is solved to solve the prior art or part, the present invention provides a kind of detection double cell product batteries
Abnormal method and apparatus.
According to an aspect of the invention, there is provided a kind of method for detecting double cell product battery exception, double electricity
Pond is connected in parallel, the method includes：
The current voltage of the double cell product is detected, when the current voltage detected is in predeterminated voltage section, according to
The current voltage determines detection duration, and starts charging detection to the double cell product；
In determining detection duration, repeated detection is carried out to the voltage of the double cell product in charging, record is every
The secondary voltage value detected and corresponding charging duration；
One linearity curve is fitted according to multigroup record of voltage value and charging duration, according to the linearity curve fitted
Slope detection described in double cell product it is abnormal with the presence or absence of monocell.
According to another aspect of the present invention, a kind of device for detecting double cell product battery exception is provided, it is described double
Cell parallel connects, and described device includes memory and processor, and the memory, which is stored with, to be performed by the processor
Computer program, above-mentioned method and step can be realized when the computer program is performed by the processor.
The beneficial effects of the invention are as follows：Technical scheme of the present invention by detecting the current voltage of the double cell product,
When the current voltage detected is in predeterminated voltage section, detection duration is determined, and to double electricity according to the current voltage
Pond product starts charging detection；In determining detection duration, the voltage of the double cell product in charging is carried out multiple
Detection records the voltage value detected every time and corresponding charging duration；Intended according to multigroup record of voltage value and charging duration
A linearity curve is closed out, it is different with the presence or absence of monocell according to double cell product described in the slope detection of the linearity curve fitted
Often, compared with the prior art, the present invention can be realized without additional cell voltage management and control chip and double cell carried out extremely
Intelligent measurement effectively eliminates security risk caused by due to not finding monocell exception in time, and saves circuit control
The arrangement space of plate reduces production cost, promotes user experience.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for detection double cell product battery exception of one embodiment of the invention；
Fig. 2 is a kind of original charging curve schematic diagram of monocell sample of one embodiment of the invention；
Fig. 3 is a kind of original charging curve schematic diagram of double cell sample of one embodiment of the invention；
Fig. 4 is the monocell of one embodiment of the invention and double cell sample charges under different starting voltages 5 minutes electricity
Press the schematic diagram of increment；
Fig. 5 is that the charging initial voltage of one embodiment of the invention changes not linear schematic diagram；
Fig. 6 is a kind of particular flow sheet of the method for detection double cell product battery exception of one embodiment of the invention；
Fig. 7 is a kind of structure diagram of the device of detection double cell product battery exception of one embodiment of the invention.
Specific embodiment
The present invention design concept be：For in the prior art can only be by increasing additional cell voltage management and control chip pair
The battery charging function of double cell electronic product is detected the arrangement space for leading to expand circuit control panel, increases product body
Product increases production cost, reduces user experience problem, inventor expects, when the current voltage detected is in predeterminated voltage section
When, detection duration is determined, and double cell product is started and is charged according to current voltage；In determining detection duration, to charging
In the voltage of double cell product carry out repeated detection, record the voltage value that detects every time and corresponding charging duration；According to
Multigroup record of voltage value and charging duration fits a linearity curve, double according to the slope detection of the linearity curve fitted
Battery product is abnormal with the presence or absence of monocell.
Embodiment one
Fig. 1 is a kind of flow chart of the method for detection double cell product battery exception of one embodiment of the invention, such as Fig. 1
It is shown,
In step s 110, the current voltage of double cell product is detected, when the current voltage detected is in predeterminated voltage area
Between when, according to current voltage determine detection duration, and to double cell product start charging detection.
In the step s 120, in determining detection duration, the voltage of the double cell product in charging is repeatedly examined
It surveys, records the voltage value detected every time and corresponding charging duration.
In step s 130, a linearity curve is fitted according to multigroup record of voltage value and charging duration, according to plan
The slope detection double cell product of the linearity curve closed out is abnormal with the presence or absence of monocell.
Pass through method shown in FIG. 1, it is known that, technical scheme of the present invention by detecting the current voltage of double cell product,
When the current voltage detected is in predeterminated voltage section, detection duration is determined, and double cell product is opened according to current voltage
Dynamic charging；In determining detection duration, repeated detection is carried out to the voltage of the double cell product in charging, records detection every time
The voltage value and corresponding charging duration arrived；One linearity curve is fitted according to multigroup record of voltage value and charging duration,
It is abnormal with the presence or absence of monocell according to the slope detection double cell product of the linearity curve fitted, compared with the prior art, this
Invention without additional cell voltage management and control chip can be realized to double cell extremely carry out intelligent measurement, effectively eliminate by
The security risk caused by monocell exception is not found in time, and the arrangement space of circuit control panel is saved, reduce production
Cost promotes user experience.
In order to enable technical scheme of the present invention is clearer, it is explained for a specific example below.
(1) battery voltage detection section is determined.
First, the charging curve and detailed data of monocell and double cell under rated current are obtained, including original
It (was not used) under state and charging curve when charge and discharge are multiple.Fig. 2 and Fig. 3 is monocell and double cell in initial shape
Original charging curve under state.Battery charging curve is the basis of technical solution of the present invention design, needs to use multigroup battery sample
The charging curve of product as reference, to exclude the otherness of Individual cells sample, so that the charging curve got is more
Accurately.
By Fig. 2 and Fig. 3 it is found that either monocell or double cell, when voltage is less than 3.6V, charging process voltage
Increase too fast；And after voltage is more than 4.1V, cell voltage tends towards stability.The voltage that ought detect belong to (3.6V,
4.1V) during section, voltage value is linear relationship with the time.
In order to enable battery voltage detection section is more accurate, we are existed respectively using monocell sample and double cell sample
Charging measurement is carried out on the basis of different starting voltages, the charging time is fixed as 5 minutes.Different starting voltage bases are recorded respectively
The voltage increment of upper charging after five minutes, as shown in Figure 4.By Fig. 4 analyses it is found that when initiation of charge voltage is more than 4V or so,
Monocell and the difference of double cell voltage increment are very small.Therefore, the upper limit of cell voltage monitoring is not above 4V.So far,
Battery voltage detection section is determined as (3.6V, 4V).It should be noted that only it is with the monocell in earphone in the present embodiment
For the original charging curve of double cell, the determining method in description battery voltage detection section.In practical applications, for not
For same double cell electronic product, battery voltage detection section is determined by product self-characteristic, and the present invention examines battery capacity
The specific section surveyed does not limit.According to the linear change of the charging curve of monocell and double cell in different double cell products
Region can determine different battery voltage detection sections.
(2) influence of the unstable state at initial stage in charging process is excluded.
Assuming that double cell product is charged by USB interface, measure analysis by practical and find, when USB interface just
At the time of insertion, at the initial stage in charging process, charging voltage growth rate is too fast, shows nonlinear performance, such as Fig. 5 institutes
Show.About after 1 minute, charged state tends towards stability situation, and above-mentioned selected battery voltage detection section (3.6V,
In the range of 4V), the charging performance of near-linear is presented, as shown in Figure 5.Therefore, in detection double cell product battery security
In the process, data in 1 minute of the charging process beginning should be abandoned.It is to be understood that in charging process, voltage data is steady
Before fixed, do not start voltage detecting.It should be noted that it is the first issue of analysis earphone charging by taking earphone as an example in the present embodiment
According to the unstable time.In practical applications, the charging initial stage data of the no electronic product unstable time may be identical,
Also may be different, concrete condition concrete analysis, the application does not limit the specific time unstable to charging initial stage data.
(3) it during cell voltage is detected, is filtered.
Since battery voltage value has fluctuation in charging process, and sampled typically by analog to digital conversion circuit A/D
Battery voltage value, analog to digital conversion circuit A/D during sampling there is also certain error, therefore, in voltage acquisition process
In, it is necessary to suitable filtering process is added in during voltage acquisition.
In one embodiment of the invention, with reference to limit filtration method and middle position value filtering method to collected battery
Voltage is filtered, hereinafter referred to as amplitude limit middle position value filtering method, and the realization step of amplitude limit middle position value filtering method is as follows：
For example, detection battery voltage value detection time between be divided into 1s, when detecting first voltage value, when detecting between
The preceding 10ms of 1s is spaced, samples 10 voltage values (for example, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10), then is examined for the first time
The voltage value of survey is A1=(a1+a2+a3+a4+a5+a6+a7+a8+a9+a10)/10.
When detecting second voltage value, when detecting between be spaced the preceding 10ms of 1s, sample 10 voltage values (for example, b1,
B2, b3, b4, b5, b6, b7, b8, b9, b10), then Δ 1=b1-A1, Δ 2=b2-A1, Δ 3=b3-A1, Δ 4=are calculated respectively
B4-A1, Δ 5=b5-A1, Δ 6=b6-A1, Δ 7=b7-A1, Δ 8=b8-A1, Δ 9=b9-A1, Δ 10=b10-A1；Point
Not by Δ 1, Δ 2, Δ 3, Δ 4, Δ 5, Δ 6, Δ 7, Δ 8, Δ 9, Δ 10 and voltage difference threshold value (for example, 0.02mV), pass through
It analyzes Δ 4 and is more than voltage difference threshold value with Δ 5, then delete b4 and b5；Using bubble sort method find out remaining b1, b2, b3,
Maximum value and minimum value in b6, b7, b8, b9, b10, it is assumed that maximum value and minimum value are b1 and b8, then delete b1 and b8,
Then the voltage value of second of detection is A2, A2=(b2+b3+b6+b7+b9+b10)/2.In the process of repeated detection cell voltage
In, sample voltage value is filtered by above-mentioned filtering method, the final voltage value detected every time, by above-mentioned
The method of sampling and filtering method determine the voltage value detected every time, improve the accuracy of the voltage value detected.Actually should
In, the number sampled in detection voltage time interval can be selected according to the needs of measuring accuracy.
(4) matched curve.
By above-mentioned analysis it is found that due in charging process, in certain battery voltage detection section, detection time and
It is in a linear relationship to detect voltage value curve, so, least square method can be selected to carry out the fitting of charging curve.For 3.6V extremely
In the charging section of 4.0V, uniformly choose 10 test points (it should be noted that in practical applications, can be according to practical need
Determine test point quantity or it is uneven choose several test points also can), using least square fitting and fitting is obtained
The slope of straight line.
Assuming that 10 point coordinates in charging process are [ti,vi], i=0,1,2 ..., 9, wherein, t is detection time, v
For the voltage value detected；
Then the mean value of detection time is
Detection voltage mean value be
In practical applications, the fitting of curve, the song being fitted according to above-mentioned data can be carried out by tools such as Matlab
Line is v=kt+b (formula three)
WhereinB is constant.
In practical applications, it is that can determine whether the charged state of this battery by final k values.It should be noted that this
When the k values that determine be original k values.
(5) battery voltage detection process.
Fig. 6 is a kind of particular flow sheet of the method for detection double cell product battery exception of one embodiment of the invention,
As shown in fig. 6,
S601, detection current voltage, it is assumed that current voltage 3.7V.
Whether the cell voltage that S602, judgement detect is between (3.6V, 4V), if so, performing step S603；If
It is no, then perform step S613.
S603, as can be seen from FIG. 3, when the current voltage value detected is 3.7V, the time at this time is 8min；It is in addition, electric
The upper limit value 4V corresponding times of detection interval are pressed as 45min, then the upper limit value 4V of current voltage value to voltage detecting section
A length of 37min during detection.
S604, in charging process, the hardness of unstable data is excluded using the method in above-mentioned (four), i.e.,：In voltage
After data stabilization, start voltage detecting.
S605,37min detection duration in 3.7min (10 points are uniformly taken in 37min) for detection time interval it is uniform
Choose 10 test points.In one embodiment of the invention, determine that following method also can be used in 10 test points：Detection is current
Voltage, it is assumed that current voltage 3.7V, current voltage is between (3.6V, 4V), it is determined that interval voltage changing value (for example,
0.02V), that is, the voltage detected often changes 0.02V, then record is each respectively changes the voltage value corresponding time, obtains accordingly
10 groups of voltage values and each voltage value corresponding time.
S606, the voltage value that each test point is obtained using the method in above-mentioned (four), record 10 test points pair respectively
The 10 groups of voltage values answered and each voltage value corresponding time.
It is S607, linear according to 10 groups of voltage values and the corresponding time match of each voltage value using the method in above-mentioned (four)
Curve, and calculate the k values of linearity curve.
S608, the difference of current k values and original k values is judged whether in slope difference threshold range, for example, calculating current
The absolute value of k values and the difference of original k values | kCurrently-kIt is original|, and judge | kCurrently-kIt is original| whether no more than slope difference threshold (example
Such as, 10%k), if so, performing step S609；If it is not, then perform step S611；
S609, judge in charging process, detection duration is (i.e.：Current detection voltage corresponding time and predeterminated voltage section
The difference of upper limit value corresponding time) whether not less than detection duration threshold value (for example, 30min), in the present embodiment (45min-
8min)>30min then utilizes current slope kCurrentlyInstead of original slope kIt is original.In another embodiment of the presently claimed invention, it is assumed that
Currently detected voltage value is 3.9V, and as shown in Figure 3, the 3.9V corresponding times are 36min, and 3.9V rises to 4V, institute
(45min-36min) a length of during detection cannot then utilize current slope k at this time less than 30minCurrentlyInstead of original slope
kIt is original.It should be noted that due to battery self character, after multiple charge and discharge, the actual capacity of battery in itself can be continuous
Attenuation, k values are also constantly changing.Therefore, it is necessary to enabled charging matched curve memory function, just can guarantee that user subsequently used
Charging detection criterion in journey is correct.So-called memory function exactly deposits the k values calculated in normal charging process
In the memory Flash of processor MCU, i.e.,：Update k values.
S611, when the difference of current k values and original k values is not when in slope difference threshold range, judge what is fitted
Whether the slope of linearity curve is more than safe slope threshold value (for example, 50%k), if so, performing step S612；If it is not, then sentence
Disconnected double cell product battery is normal, and stops detecting；
S612, judge to dodge by word, voice, image, video or indicator light there are monocell exception in double cell product
Bright or its mode be combineding with each other prompts user.
Whether the voltage value that S613, judgement detect is more than the upper limit value (for example, 4V) in voltage detecting section, if detecting
Voltage value be more than the upper limit value in voltage detecting section, then stop detecting, because when the voltage value that detect is more than voltage detecting
The upper limit value in section, battery charging curve are not linear relationships, can not calculate k values；If the voltage value detected is examined less than voltage
The upper limit value in section is surveyed, then continues to detect cell voltage.
It should be noted that the voltage threshold (3.6V, 4.0V) and Fig. 2-5 involved in the present embodiment are example battery sample
This, can have differences between the battery of different vendor's production.
In one embodiment of the invention, thermistor or temperature sensing are set on the circuit board of double cell product
Device.Pass through thermistor or temperature sensing in the detection process that either charges before charging detection is started to double cell product
Device detects the temperature of double cell product circuit plate, when temperature is less than temperature minimum threshold value higher than maximum temperature threshold value or temperature
When, then stop charging detection, prevent from still charging in mal-conditions such as high/low temperatures, extend the service life of battery.
Embodiment two
Fig. 7 is a kind of structure diagram of the device of detection double cell product battery exception of one embodiment of the invention,
As shown in fig. 7, device 700 includes memory 720 and processor 710, memory 720, which is stored with, to be performed by processor 710
Computer program, method and step as shown in Figure 1 can be realized when computer program is performed by processor 710.
It is communicated and connected by internal bus 730 between memory 720 and processor 710, in one embodiment of the present of invention
In, what memory 720 stored is the computer program 721 for detecting double cell product battery exception.
In various embodiments, memory 720 can be memory or nonvolatile memory.It is wherein non-volatile to deposit
Reservoir can be：Memory driver (such as hard disk drive), solid state disk, any kind of storage dish (such as CD, DVD),
Either similar storage medium or combination thereof.Memory can be：RAM (RadomAccess Memory, arbitrary access
Memory), volatile memory, nonvolatile memory, flash memory.Further, nonvolatile memory and memory can as machine
Storage medium is read, the computer program 721 of detection double cell product battery exception performed by processor 710 can be stored thereon.
It should be noted that in the present embodiment it is claimed detection double cell product battery exception device 700 work
It is corresponding identical with the realization step of each embodiment of method shown in FIG. 1 to make process, identical part repeats no more.
To sum up, technical scheme of the present invention is by detecting the current voltage of double cell product, when the current voltage detected
At predeterminated voltage section, detection duration is determined, and start charging detection to double cell product according to current voltage；What is determined
It detects in duration, repeated detection is carried out to the voltage of the double cell product in charging, record the voltage value that detects every time and right
The charging duration answered；One linearity curve is fitted according to multigroup record of voltage value and charging duration, according to the line fitted
The slope detection double cell product of linearity curve is abnormal with the presence or absence of monocell, and compared with the prior art, the present invention is without additionally increasing
If cell voltage management and control chip can be realized carries out intelligent measurement extremely to double cell, effectively eliminate due to not finding list in time
Security risk caused by battery exception, and the arrangement space of circuit control panel is saved, production cost is reduced, promotes user's body
It tests.
The above description is merely a specific embodiment, under the above-mentioned introduction of the present invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of above-described embodiment.It will be understood by those skilled in the art that above-mentioned tool
The purpose of the present invention is only preferably explained in body description, and protection scope of the present invention is subject to the protection scope in claims.
Claims (9)
1. a kind of method for detecting double cell product battery exception, the double cell are connected in parallel, which is characterized in that the method
Including：
The current voltage of the double cell product is detected, when the current voltage detected is in predeterminated voltage section, according to described
Current voltage determines detection duration, and starts charging detection to the double cell product；
In determining detection duration, repeated detection is carried out to the voltage of the double cell product in charging, records inspection every time
The voltage value and corresponding charging duration measured；
One linearity curve is fitted according to multigroup record of voltage value and charging duration, according to the oblique of the linearity curve fitted
It is abnormal with the presence or absence of monocell that rate detects the double cell product.
2. the method as described in claim 1, which is characterized in that the method further includes：
The original charging curve of the double cell product is obtained, is determined according in the original charging curve close to linear section
The predeterminated voltage section, and determine the corresponding total charging duration in the predeterminated voltage section；
According to the ratio of the voltage difference in the predeterminated voltage section and total charging duration, the predeterminated voltage section is determined
The initial slope of corresponding linearity curve；
It is described to determine that detection duration includes according to the current voltage：During using the voltage in the predeterminated voltage section and charging
Long linear relationship determines detection duration according to the current voltage and total charging duration.
3. the method as described in claim 1, which is characterized in that it is described in determining detection duration, described in charging
The voltage of double cell product carries out repeated detection, records the voltage value detected every time and includes：
When being detected every time to the voltage of the double cell product in charging, multiple voltage values are sampled, to the multiple electricity
Pressure sampled value is filtered, the voltage value that the voltage sample value after filtering process is detected as this.
4. method as claimed in claim 3, which is characterized in that it is described that the multiple voltage sample value is filtered,
Include the voltage sample value after filtering process as this voltage value detected：
When first time detecting voltage value, multiple voltage values are sampled, calculate the mean value of the multiple voltage sample value, it will be described equal
It is worth the voltage value as first time detection；
In follow-up repeated detection voltage value, multiple voltage values are sampled, the multiple voltage sample value is examined respectively with the last time
The voltage value measured makes the difference, and the difference and voltage difference threshold value are compared, if the difference is more than the difference threshold,
Then corresponding voltage sample value is deleted, removes the maximum value and minimum value in remaining voltage sample value, it is maximum to calculate removal
The mean value of residual voltage sampled value after value and minimum value, the voltage value that the mean value is detected as this.
5. the method as described in claim 1, which is characterized in that multigroup record according to voltage value and charging duration is fitted
Go out a linearity curve to include：
One linearity curve, the line fitted are fitted according to multigroup record of voltage value and charging duration using least square method
The slope k of linearity curve is：
Wherein, t is detection time,For the average detected time, v is the voltage value of detection,To detect the average value of voltage value, N
To detect voltage value number.
6. method as claimed in claim 2, which is characterized in that described in the slope detection for the linearity curve that the basis fits
Double cell product includes extremely with the presence or absence of monocell：
The initial slope of the slope of the linearity curve fitted linearity curve corresponding with the predeterminated voltage section is made the difference, it will be poor
The absolute value of value is compared with slope difference threshold, if the absolute value of difference is not more than the slope difference threshold and the inspection
Duration is surveyed not less than detection duration threshold value, then updates the initial slope using the slope of the linearity curve fitted；
If the absolute value of difference is more than the slope difference threshold, the slope of linearity curve further fitted described in judgement
Whether safe slope threshold value is more than, if so, judging that there are monocell exceptions in the double cell product；If it is not, then judge institute
It is normal to state double cell product battery.
7. the method as described in claim 1, which is characterized in that there are during monocell exception in the double cell product, institute
The method of stating further includes：
It is prompted in a manner that word, voice, image, video or indicator light flicker or it be combined with each other.
8. the method as described in claim 1, which is characterized in that the method further includes：
Pass through thermistor or temperature in the detection process that either charges before charging detection is started to the double cell product
Sensor detects the temperature of the double cell product circuit plate, when the temperature is low higher than maximum temperature threshold value or the temperature
When temperature minimum threshold value, then stop charging detection.
9. a kind of device for detecting double cell product battery exception, the double cell are connected in parallel, which is characterized in that described device
Including memory and processor, the memory is stored with the computer program that can be performed by the processor, the calculating
Machine program can realize claim 1-8 any one of them method and steps when being performed by the processor.
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| CN109696635A (en) * | 2018-12-20 | 2019-04-30 | 合肥协力仪表控制技术股份有限公司 | A kind of battery charging state judgment method and management system based on car networking application |
| CN109856552A (en) * | 2019-01-28 | 2019-06-07 | 蜂巢能源科技有限公司 | Vehicle and its battery method for detecting abnormality and device based on current value |
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