CN106932726A - A kind of battery core method for detecting health status - Google Patents
A kind of battery core method for detecting health status Download PDFInfo
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- CN106932726A CN106932726A CN201710113042.XA CN201710113042A CN106932726A CN 106932726 A CN106932726 A CN 106932726A CN 201710113042 A CN201710113042 A CN 201710113042A CN 106932726 A CN106932726 A CN 106932726A
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- battery core
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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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of battery core method for detecting health status, comprise the following steps：S0：Battery core fully charged process in the T of preset temperature interval corresponding standard charging time t is obtained by testing；S1：In practical application, current battery core temperature T0 is detected, the actual charging interval t' needed for the fully charged process of battery core is fully charged and recorded to battery core；S2：Calculated with the standard charging time t0 at identical temperature according to the corresponding actual charging interval t0' of current battery core temperature T0 and deviate percentage, deviate percentage=(actual charging interval t' standard charging times t)/100, if the absolute value for deviateing percentage is more than predetermined threshold value K, then judge battery core exception, otherwise judge that battery core is normal.
Description
Technical field
The present invention relates to battery core field, more particularly to a kind of battery core method for detecting health status.
Background technology
With the fast development of new-energy automobile, new-energy automobile is more and more to the demand that battery core is managed, wherein to electricity
The attention rate more and more higher of the health degree of core.In electric automobile, battery core is the power resources of vehicle, is that vehicle most critical is obtained
One of part, detections of the BMS to battery core health status is not only demand of the electric automobile to functional safety, is also to improve user's body
The means tested (let the user know that the health degree of battery core, the battery core of capacity attenuation is changed in time).At present, BMS is to battery core
There is problems with the estimation of health status：1. appraising model is excessively complicated, and amount of calculation is huge, causes estimating for battery core health status
Calculation is difficult to realize.2. calculating parameter is difficult to catch in actual applications.Such as, the method that battery core health status is estimated with internal resistance,
More accurately to estimate that internal resistance is not easy in actual use in vehicle, and battery core internal resistance very little, very little
Error can all have a strong impact on the estimation accuracy of battery core health status.
The content of the invention
The purpose of the present invention is to overcome weak point of the prior art, there is provided a kind of battery core method for detecting health status.
The purpose of the present invention is achieved through the following technical solutions：
A kind of battery core method for detecting health status, comprises the following steps：
S0：Battery core fully charged process in the T of preset temperature interval corresponding standard charging time t is obtained by testing；
S1：In practical application, detecting current battery core temperature T0, battery core is fully charged and recorded to battery core and is filled completely
Actual charging interval t' needed for electric process；
S2：According to the corresponding actual charging interval t' of the current battery core temperature T0 and standard charging time t at identical temperature
Calculate and deviate percentage, deviate percentage=(actual charging interval t'- standard charging times t)/100, if deviateing percentage
Absolute value is more than predetermined threshold value K, then judge battery core exception, otherwise judges that battery core is normal.
Wherein in one embodiment, the step S0 is filled completely by testing acquisition battery core in the T of preset temperature interval
Charging process is charged using pre-set constant current I0 in electric process corresponding standard charging time t.
Wherein in one embodiment, fully charged process is with battery core discharge cut-off voltage to charge in the step S0
Point, with battery core charge cutoff voltage as charge termination.
Wherein in one embodiment, the step S0 is specially：
S01：Preset temperature interval T is divided into some sub- temperature range T1, T2 ... ..., Tn；
S02：Repeat complete charge and discharge cycles to battery core in each sub- temperature range respectively, and record complete every time
It is complete to charge the required time；
S03：Time needed for fully charged in same sub- temperature range is averaging, the sub- temperature range correspondence is obtained
Standard charging time tn.
Wherein in one embodiment, the process being fully charged to battery core in the step S1 is using pre-set constant electricity
Stream I0 is charged.
Wherein in one embodiment, fully charged process is with battery core discharge cut-off voltage to charge in the step S1
Point, with battery core charging charge cutoff voltage as charge termination.
Wherein in one embodiment, in the step S1 by needed for the fully charged process of timer record battery core when
Between charging interval t'.
Wherein in one embodiment, the setting of the pre-set constant current I0 and predetermined threshold value K is inversely.
Wherein in one embodiment, the predetermined threshold value K is 5%~10%.
Wherein in one embodiment, the predetermined threshold value K is 8%.
This technical scheme has following beneficial effect compared to prior art：
1. detection battery core health status method flow simply easily realizes that cost is relatively low, it is not necessary to collection and a large amount of numbers of calculating
According to the health status for going detection battery core.
2. the health status of battery core, battery core full charge of time are judged by the battery core full charge of time as factor
Data acquisition is simple, and amount of calculation is small, and error calculated is small, and battery core health condition judging result precision is high.
Brief description of the drawings
Fig. 1 is the battery core method for detecting health status flow chart of the present embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give better embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described implementation method.On the contrary, the purpose for providing these implementation methods is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique implementation method to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all of combination of related Listed Items.
It is as shown in Figure 1 battery core method for detecting health status, comprises the following steps：
S0：Battery core fully charged process in the T of preset temperature interval corresponding standard charging time t is obtained by testing；
S1：In practical application, detecting current battery core temperature T0, battery core is fully charged and recorded to battery core and is filled completely
Actual charging interval t' needed for electric process；
S2：According to the corresponding actual charging interval t' of the current battery core temperature T0 and standard charging time t at identical temperature
Calculate and deviate percentage, deviate percentage=(actual charging interval t'- standard charging times t)/100, if deviateing percentage
Absolute value is more than predetermined threshold value K, then judge battery core exception, otherwise judges that battery core is normal.
Specifically, the step S0 is corresponding by testing acquisition battery core fully charged process in the T of preset temperature interval
Charging process is charged using pre-set constant current I0 in standard charging time t.
Specifically, fully charged process is charging starting point with battery core discharge cut-off voltage in the step S0, is filled with battery core
Electric blanking voltage is charge termination.
Specifically, the step S0 is specially：
S01：Preset temperature interval T is divided into some sub- temperature range T1, T2 ... ..., Tn；
S02：Repeat complete charge and discharge cycles to battery core in each sub- temperature range respectively, and record complete every time
It is complete to charge the required time；
S03：Time needed for fully charged in same sub- temperature range is averaging, the sub- temperature range correspondence is obtained
Standard charging time tn.
Specifically, the process being fully charged to battery core in the step S1 is filled using pre-set constant current I0
Electricity.
Specifically, fully charged process is charging starting point with battery core discharge cut-off voltage in the step S1, is filled with battery core
Electric charge cutoff voltage is charge termination.
Specifically, by charging interval time needed for the fully charged process of timer record battery core in the step S1
t'。
Specifically, the setting of the pre-set constant current I0 and predetermined threshold value K is inversely.
Further, the predetermined threshold value K is 5%~10%.
Further, the predetermined threshold value K is 8%.
This technical scheme is described in detail with reference to a specific embodiment.
Embodiment one：
It is assumed that the minimum operating temperature T of battery coreLWith maximum operating temperature THRespectively 0 DEG C and 50 DEG C, in this embodiment
In, with temperature interval, 10 DEG C are divided into 5 temperature ranges, are divided into T1=[1 DEG C, 10 DEG C], T2=[11 DEG C, 20 DEG C], T3=[21
DEG C, 30 DEG C], T4=[31 DEG C, 40 DEG C], T5=[41 DEG C, 50 DEG C], in 5 temperature ranges with pre-set constant current I0 to battery core
It is circulated charge-discharge test, it is emphasized that, the value of pre-set constant current I0 is the charging current of imitating charger, according to
The charger charging current of national standard.
It should be noted that temperature interval can the actual conditions of basis make corresponding change, if consider to need compared with
Vehicle safety coefficient high, what the value of temperature interval just should be appropriate turns down, divides more careful temperature range, improves detection
Precision, reduces error.
5 temperature ranges of statistics are completed the fully charged time, and the corresponding temperature interval corresponding fully charged time is determined
Justice is the standard charging time.That is, the standard charging time in temperature range [1 DEG C, 10 DEG C] is t1, temperature range [11 DEG C, 20
DEG C] in the standard charging time be t2, the standard charging time in temperature range [21 DEG C, 30 DEG C] be t3, temperature range [31
DEG C, 40 DEG C] in the standard charging time be t4, the standard charging time in temperature range [41 DEG C, 50 DEG C] be t5.By what is counted
Data input to battery management system (BMS) is preserved.Record is recorded during the charging interval using counter, the counting
Device uses software counter.
It should be noted that in the present embodiment, first standard charging of temperature range is determined in 5 temperature ranges
The detailed process of time t1 is：First temperature range is designated as T1, T1=[1 DEG C, 10 DEG C], right in T1 this temperature range
Battery core is circulated the certain number of times of discharge and recharge, and in the present embodiment, cycle-index is 10 times, by the 10 of T1 temperature ranges times
The mean value definition of fully charged time is the standard charging time t1 of T1 temperature ranges.Cycle-index can be according to specific feelings
Condition sets, and should not set very little, and what should not also be set is too many, and precision is not high very little for cycle-index, and cycle-index is caused too much
The extraneous expense of manpower and materials, cost.
It should be noted that being charging starting point with battery core discharge cut-off voltage, with battery core in cycle charge-discharge experiment
Charge cutoff voltage is charge termination.
In vehicle real work, when the battery core of vehicle is in charged state, battery management system (BMS) can be detected works as
The temperature of preceding battery core, in this embodiment it is assumed that the temperature of current battery core is 15 DEG C, now battery management system (BMS) meeting
With the test data for pre-entering, 15 DEG C just matching temperature range [11 DEG C, 20 DEG C], recall this temperature range [11 DEG C,
20 DEG C] the standard charging time be t2, battery management system (BMS) records the current battery core actual charging interval, is designated as t2', and
Calculated according to standard charging time t2 and actual charging interval t2' and deviate percentage=(actual charging interval t2'- standard chargings
Time t2)/100.If battery management system (BMS) judge the charging interval deviate percentage absolute value more than predetermined threshold value K (
In the present embodiment, predetermined threshold value K values are for 8%), then battery management system (BMS) judges current battery core exception, sends alarm.
In vehicle real work, the temperature data of collection and the charging interval data input of record to battery management system (BMS) enter
The corresponding computing of row.Record is recorded during the charging interval using counter, and the counter uses software counter.
It should be noted that the value of predetermined threshold value K can be adjusted accordingly with reference to actual conditions, predetermined threshold value K's
Value is related to pre-set constant current I0, and inversely, when pre-set constant current I0 is bigger, the value of predetermined threshold value K is just
Should value it is smaller, this is to ensure that the time required for charging is just when battery core is charged with larger pre-set constant current I0
It is shorter, if easily causing error in judgement if predetermined threshold value K values are larger, in order to ensure accuracy, as pre-set constant current I0
When value is larger, patient deviation percentage is just smaller.
Also, it should be noted that battery management system (BMS) is when judging, as long as occurring once deviateing the absolute of percentage
When value is bigger than predetermined threshold value K, it is assumed that the battery core of current detection is in abnormality.
The invention discloses a kind of battery core method for detecting health status, the battery core that will be actually applied to vehicle is entered into rower
Quasi- test, some sub- temperature range T1, T2 ..., Tn, note are divided with reference to actual situation by battery core in preset temperature interval T
The some fully charged times of sub- temperature range of record are simultaneously defined as standard charging time t, and experimental data is preserved to cell tube
Reason system (BMS), in practical application, battery management system (BMS) detects current battery core temperature, matches current battery core temperature
Under temperature range, recall the temperature range corresponding standard charging time t.Additionally, the software control of battery management system (BMS)
End processed records the actual charging interval t' of current battery core by software timer, calculates and deviates percentage, according to deviation percentage
Judge the health status of current battery core.The method flow simply easily realizes that cost is relatively low, it is not necessary to collection and calculating mass data
Go the health status of detection battery core.And, the method judges the health of battery core by the battery core full charge of time as factor
State, the full charge of time data of battery core obtains simple, and amount of calculation is small, and error calculated is small, and battery core health status is sentenced
Determine result precision high.
The above implementation method only expresses several embodiments of the invention, and its description is more specific and detailed, but
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for the ordinary skill people of this area
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection domain.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of battery core method for detecting health status, it is characterised in that comprise the following steps：
S0：Battery core fully charged process in the T of preset temperature interval corresponding standard charging time t is obtained by testing；
S1：In practical application, detecting current battery core temperature T0, the fully charged mistake of battery core is fully charged and recorded to battery core
The actual charging interval t' of Cheng Suoxu；
S2：According to the corresponding actual charging interval t0' of current battery core temperature T0 and the standard charging time t0 meter at identical temperature
Calculate and deviate percentage, deviate percentage=(actual charging interval t'- standard charging times t)/100, if deviateing the exhausted of percentage
Predetermined threshold value K is more than to value, then judges battery core exception, otherwise judge that battery core is normal.
2. battery core method for detecting health status according to claim 1, it is characterised in that the step S0 is obtained by experiment
Charging process uses pre-set constant in the corresponding standard charging time t0 of power taking core fully charged process in the T of preset temperature interval
Electric current I0 is charged.
3. battery core method for detecting health status according to claim 1, it is characterised in that fully charged in the step S0
Process with battery core discharge cut-off voltage be charging starting point, with battery core charge cutoff voltage as charge termination.
4. battery core method for detecting health status according to claim 1, it is characterised in that the step S0 is specially：
S01：Preset temperature interval T is divided into some sub- temperature range T1, T2 ... ..., Tn；
S02：Repeat complete charge and discharge cycles to battery core in each sub- temperature range respectively, and record fills completely every time
Time needed for electricity；
S03：Time needed for fully charged in same sub- temperature range is averaging, the corresponding mark of the sub- temperature range is obtained
Quasi- charging interval tn.
5. battery core method for detecting health status according to claim 1, it is characterised in that enter to battery core in the step S1
The full charge of process of row is charged using pre-set constant current I0.
6. battery core method for detecting health status according to claim 5, it is characterised in that fully charged in the step S1
Process with battery core discharge cut-off voltage be charging starting point, with battery core charging charge cutoff voltage as charge termination.
7. battery core method for detecting health status according to claim 6, it is characterised in that pass through timing in the step S1
Charging interval time t0' needed for the device record fully charged process of battery core.
8. the battery core method for detecting health status according to claim 3 or 5, it is characterised in that the pre-set constant current
The setting of I0 and predetermined threshold value K is inversely.
9. battery core method for detecting health status according to claim 8, it is characterised in that the predetermined threshold value K is 5%~
10%.
10. battery core method for detecting health status according to claim 9, it is characterised in that the predetermined threshold value K is 8%.
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Cited By (11)
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| CN110261786A (en) * | 2019-07-02 | 2019-09-20 | 江西安驰新能源科技有限公司 | A kind of capacity test method of rectangular aluminum hull battery core |
| CN110542722A (en) * | 2019-08-27 | 2019-12-06 | 北京索瑞特医学技术有限公司 | Fault detection method and device for ultrasonic probe |
| CN110574219A (en) * | 2018-10-12 | 2019-12-13 | Oppo广东移动通信有限公司 | Charging method, terminal and computer storage medium |
| CN110673050A (en) * | 2018-07-03 | 2020-01-10 | 法国电力公司 | Method for evaluating state of health of battery |
| CN111225574A (en) * | 2017-10-18 | 2020-06-02 | 日本烟草产业株式会社 | Battery unit, fragrance inhaler, method of controlling battery unit, and program |
| CN112798963A (en) * | 2021-04-14 | 2021-05-14 | 杭州宇谷科技有限公司 | Method, apparatus and medium for detecting battery charging characteristic abnormality based on time series |
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| CN115308607A (en) * | 2022-07-26 | 2022-11-08 | 力高(山东)新能源技术有限公司 | Method for judging cell voltage deviation reason based on image recognition technology |
| US11705744B2 (en) | 2017-10-18 | 2023-07-18 | Japan Tobacco Inc. | Battery unit, flavor inhaler, method for controlling battery unit, and program for detecting degradation of a chargeable and dischargeable power supply of a battery unit of a vaporizor |
| CN117578664A (en) * | 2023-11-28 | 2024-02-20 | 浙江智格科技有限公司 | Intelligent Internet of things-based battery-changing cabinet safety control method and system |
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| CN110542722A (en) * | 2019-08-27 | 2019-12-06 | 北京索瑞特医学技术有限公司 | Fault detection method and device for ultrasonic probe |
| CN113125984A (en) * | 2021-03-09 | 2021-07-16 | 深圳拓邦股份有限公司 | Floor washing machine battery life calculation method and device and floor washing machine |
| CN112798963A (en) * | 2021-04-14 | 2021-05-14 | 杭州宇谷科技有限公司 | Method, apparatus and medium for detecting battery charging characteristic abnormality based on time series |
| CN115308607A (en) * | 2022-07-26 | 2022-11-08 | 力高(山东)新能源技术有限公司 | Method for judging cell voltage deviation reason based on image recognition technology |
| CN117578664A (en) * | 2023-11-28 | 2024-02-20 | 浙江智格科技有限公司 | Intelligent Internet of things-based battery-changing cabinet safety control method and system |
| CN117578664B (en) * | 2023-11-28 | 2024-06-11 | 浙江智格科技有限公司 | Intelligent Internet of things-based battery-changing cabinet safety control method and system |
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