CN114217239A - AGM battery separator damage detection method and detection terminal - Google Patents
AGM battery separator damage detection method and detection terminal Download PDFInfo
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- CN114217239A CN114217239A CN202111451494.1A CN202111451494A CN114217239A CN 114217239 A CN114217239 A CN 114217239A CN 202111451494 A CN202111451494 A CN 202111451494A CN 114217239 A CN114217239 A CN 114217239A
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Abstract
The invention is suitable for the technical field of batteries, and provides an AGM battery separator damage detection method and a detection terminal, wherein the method comprises the following steps: acquiring a target saturation of a target battery; respectively acquiring actual measurement battery parameters of a target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full; and determining whether the AGM separator of the target battery is damaged or not according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging. After the AGM separator is damaged, the battery parameters can change, so that the invention can carry out constant current charging on the target battery which is fully charged for many times, and can effectively detect whether the AGM separator is damaged or not according to the change of the battery parameters after constant current charging for many times.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to an AGM battery separator damage detection method and a detection terminal.
Background
An AGM battery is a valve-regulated sealed lead-acid storage battery using an ultrafine Glass fiber separator (AGM), and is widely used in automobile start-stop systems due to its excellent characteristics such as safety, maintenance-free property, and long life. Because the AGM battery adopts the superfine glass fiber separator, the separator can be damaged due to the pole plate or the separator and other reasons in the assembling process, the damage of the separator can cause the self-discharge of the battery to be too fast, the starting performance to be reduced, the service life to be shortened and the like, and even the safety problem is caused, thereby seriously affecting the product performance.
In the prior art, the damage of the AGM separator can be detected by adopting large-current discharge or long-time standing, but the detection effect is not ideal.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and a terminal for detecting damage to an AGM battery separator, so as to solve the problem in the prior art that the effect of detecting damage to the AGM battery separator is not ideal when the AGM battery separator is discharged with a large current or left for a long time.
The first aspect of the embodiments of the present invention provides an AGM battery separator damage detection method, including:
acquiring a target saturation of a target battery;
respectively acquiring actual measurement battery parameters of a target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full;
and determining whether the AGM separator of the target battery is damaged or not according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging.
A second aspect of an embodiment of the present invention provides a detection terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method for detecting damage to an AGM battery separator according to the first aspect of the embodiment of the present invention.
A third aspect of an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps of the AGM battery separator damage detection method according to the first aspect of an embodiment of the present invention.
The embodiment of the invention provides an AGM battery separator damage detection method and a detection terminal, wherein the method comprises the following steps: acquiring a target saturation of a target battery; respectively acquiring actual measurement battery parameters of a target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full; and determining whether the AGM separator of the target battery is damaged or not according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging. After the AGM separator is damaged, the battery parameters can change, so that the embodiment of the invention can carry out constant current charging on the fully charged target battery for multiple times, and can effectively detect whether the AGM separator is damaged or not according to the change of the battery parameters after the constant current charging for multiple times.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow chart illustrating an implementation of a method for detecting damage to an AGM battery separator according to an embodiment of the present invention;
FIG. 2 is a schematic view of an AGM battery separator damage detection apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a detection terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, an embodiment of the present invention provides an AGM battery separator damage detection method, including:
s101: acquiring a target saturation of a target battery;
s102: respectively acquiring actual measurement battery parameters of a target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full;
s103: and determining whether the AGM separator of the target battery is damaged or not according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging.
When the separator of an AGM battery is damaged, the battery parameters (voltage and internal resistance) will vary to varying degrees. Based on the above, in the embodiment of the invention, the target battery is subjected to constant current charging for multiple times, whether the AGM separator of the battery is damaged or not is determined according to the change of the parameters of the battery subjected to constant current charging for each time, and the state of the AGM separator of the battery can be effectively detected. Since battery parameters vary differently for different saturation batteries, a determination should also be made in conjunction with the saturation of the battery when determining the state of the AGM separator. Furthermore, in order to guarantee the consistency of detection, a uniform standard is set, the target battery is tested when being fully charged, the standard is unified, and the accuracy of detection is improved.
For example, (1) a target saturation of 91% is obtained;
(2) applying a current I to the target battery1Charging for 1h at constant current, and recording the voltage at the moment as V1Internal resistance is IR1；
(3) Applying a current I to the target battery2Charging for 1h at constant current, and recording the voltage at the moment as V2Internal resistance is IR2；
(4) Applying a current I to the target battery3Charging for 1h at constant current, and recording the voltage at the moment as V3Internal resistance is IR3；
And acquiring voltage and internal resistance according to the target saturation and the three tests, mining the change of the battery parameters of the target battery, and determining whether the AGM separator of the target battery is damaged.
In some embodiments, S103 may include:
s1031: obtaining standard battery parameters corresponding to the measured battery parameters of each group according to the target saturation and the standard battery parameter table; the standard battery parameters include: standard voltage and standard internal resistance;
s1032: and determining whether the AGM separator of the target battery is damaged or not according to the measured battery parameters of each group and the standard battery parameters corresponding to the measured battery parameters of each group.
In the embodiment of the invention, the battery parameters of different saturation batteries are different in change, so that the embodiment of the invention can obtain the standard battery parameter corresponding to the target saturation through table lookup, compare the difference between the actual measurement battery parameter of the target battery and the standard battery parameter, and determine whether the AGM separator of the target battery is damaged.
Wherein, the saturation is a conventional parameter of the battery and can be generally and directly obtained. In the embodiment of the invention, the two-dimensional code of the target battery can be scanned to obtain the target saturation of the target battery.
In some embodiments, S1032 may comprise:
1. for each set of actually-measured battery parameters, determining a voltage difference value between an actually-measured voltage in the set of actually-measured battery parameters and a standard voltage in a standard battery parameter corresponding to the set of actually-measured battery parameters, and determining whether the voltage difference value is greater than a preset voltage difference value; if the voltage difference value is larger than the preset voltage difference value, determining that the AGM separator of the target battery is damaged;
2. aiming at each set of actually-measured battery parameters, determining an internal resistance difference value between the actually-measured internal resistance in the set of actually-measured battery parameters and the standard internal resistance in the standard battery parameters corresponding to the set of actually-measured battery parameters, and determining whether the internal resistance difference value is greater than a preset internal resistance difference value; and if the internal resistance difference value is larger than the preset internal resistance difference value, determining that the AGM separator of the target battery is damaged.
In the embodiment of the invention, if the AGM separator of the battery is not damaged, each set of measured battery parameters is within a preset range compared with the standard battery parameters of the normal battery, and if the measured battery parameters exceed the preset range, the separator of the target battery is possibly damaged.
For example, the target battery is subjected to constant current charging three times, and the three groups of measured battery parameters are (V)1，IR1)、(V2，IR2)、(V3，IR3) The corresponding standard voltage parameters are respectively (V)11，IR11)、(V12，IR12)、(V13，IR13). Calculating V1-V11、V2-V12、V3-V13And judging whether the three voltage difference values are larger than a preset voltage difference value or not, if one voltage difference value is larger than the preset voltage difference value, indicating that the charging voltage variation of the target battery is overlarge, and determining that the AGM partition plate of the target battery is damaged. Similarly, calculate IR1-IR11、IR2-IR12、IR3-IR13And judging whether the three internal resistance difference values are larger than a preset internal resistance difference value or not, and if the internal resistance difference value variation is overlarge, determining that the AGM separator of the battery is damaged.
In some embodiments, the predetermined internal resistance difference value may be 5% of the standard internal resistance value.
Wherein the standard internal resistance value is a standard internal resistance value of a normal AGM battery. Specifically, the preset internal resistance difference value can also be set according to the actual application requirement.
In some embodiments, the predetermined voltage difference may be 2% of the standard voltage value.
Wherein the standard voltage value is a standard open circuit voltage value of a normal AGM battery. Specifically, the preset voltage difference value can also be set according to the actual application requirement.
In some embodiments, S1032 may further include:
1. sequencing each set of actually measured battery parameters according to the charging sequence to obtain a first sequence;
2. setting an initial value of i, wherein i is 1;
3. subtracting the actual measurement voltage in the ith group of actual measurement battery parameters in the first sequence from the actual measurement voltage in the (i + 1) th group of actual measurement battery parameters in the first sequence to be used as the ith numerical value in the second sequence;
4. i is i + 1; if i is less than M, skipping to the step of subtracting the actual measurement voltage in the ith group of actual measurement battery parameters in the first sequence from the actual measurement voltage in the (i + 1) th group of actual measurement battery parameters in the first sequence as the ith numerical value in the second sequence to continue execution;
5. subtracting the actual measurement voltage in the 1 st group of actual measurement battery parameters in the first sequence from the actual measurement voltage in the Mth group of actual measurement battery parameters in the first sequence to be used as the Mth numerical value in the second sequence; wherein M is the number of constant current charging times;
6. determining a third sequence according to each group of standard battery parameters; wherein the third sequence comprises M numbers;
7. sequentially and respectively subtracting each corresponding numerical value in the third sequence from each numerical value in the second sequence to obtain a fourth sequence;
8. and determining whether a value outside the first preset error range exists in the fourth sequence, and if so, determining that the AGM separator of the target battery is damaged.
In some embodiments, the determining the third sequence according to each set of standard battery parameters may include:
(1) sorting standard battery parameters corresponding to each set of actually-measured battery parameters respectively according to the sequence of each set of actually-measured battery parameters in the first sequence to obtain a third standard sequence;
(2) setting an initial value of j, wherein j is 1;
(3) subtracting the standard voltage in the jth group of standard battery parameters in the third standard sequence from the standard voltage in the jth group of standard battery parameters in the third standard sequence to obtain a jth numerical value in the third sequence;
(4) j is j + 1; if j is less than M, skipping to the step of subtracting the standard voltage in the j group of standard battery parameters in the third standard sequence from the standard voltage in the j +1 group of standard battery parameters in the third standard sequence as the j group of standard battery parameters in the third standard sequence and continuing to execute the step;
(5) and subtracting the standard voltage in the 1 st group of standard battery parameters in the third standard sequence from the standard voltage in the M group of standard battery parameters in the third standard sequence to obtain the M number value in the third sequence.
In the embodiment of the invention, if the separator of the battery is not damaged, not only the difference between the measured battery parameters of each group and the standard battery parameters is almost the same, but also the variation of the parameters of each rechargeable battery is basically consistent with that of the normal battery, otherwise, the AGM separator is judged to be damaged.
For example, the target battery is subjected to constant current charging three times, and the three groups of measured battery parameters are (V)1，IR1)、(V2，IR2)、(V3，IR3) The corresponding standard voltage parameters are respectively (V)11，IR11)、(V12，IR12)、(V13，IR13). Calculating a second sequence: v2-V1、V3-V2、V3-V1And, simultaneously calculating a third sequence: v12-V11、V13-V12、V13-V11. And (3) subtracting each numerical value in the second sequence from the corresponding numerical value in the third sequence one by one to obtain a fourth sequence: v2-V1-(V12-V11)、V3-V2-(V13-V12)、V3-V1-(V13-V11) And determining whether each value in the fourth sequence is within a first preset error range, and if there is data exceeding the first preset error range, determining that the AGM separator of the target battery is damaged.
In the above embodiment, the voltage variation in the parameter of the rechargeable battery at each time is compared with the voltage variation in the parameter of the standard battery, so as to determine the damage condition of the AGM separator. Furthermore, the variable quantity of the internal resistance in the parameters of the rechargeable battery at each time can be compared with the variable quantity of the internal resistance in the parameters of the standard battery, so that the damage condition of the AGM separator can be determined. In some embodiments, S1032 may further include:
1. setting an initial value of k, wherein k is 1;
2. subtracting the actual measured internal resistance in the kth group of actual measured battery parameters in the first sequence from the actual measured internal resistance in the kth group of actual measured battery parameters in the first sequence to obtain the kth numerical value in the fifth sequence;
3. k is k + 1; if k is less than M, skipping to the step of subtracting the actual measured internal resistance in the kth group of actual measured battery parameters in the first sequence from the actual measured internal resistance in the (k + 1) th group of actual measured battery parameters in the first sequence as the kth numerical value in the fifth sequence to continue execution;
4. subtracting the actual measured internal resistance in the 1 st group of actual measured battery parameters in the first sequence from the actual measured internal resistance in the Mth group of actual measured battery parameters in the first sequence to be used as an Mth numerical value in a fifth sequence; wherein M is the number of constant current charging times;
5. determining a sixth sequence according to each group of standard battery parameters; wherein the sixth sequence comprises M numbers;
7. sequentially and respectively subtracting each corresponding numerical value in the sixth sequence from each numerical value in the fifth sequence to obtain a seventh sequence;
8. and determining whether a value outside a second preset error range exists in the seventh sequence, and if so, determining that the AGM separator of the target battery is damaged.
As above, in some embodiments, the determining the sixth sequence according to each set of standard battery parameters includes:
(1) setting an initial value of l, wherein l is 1;
(3) subtracting the standard internal resistance in the first group of standard battery parameters in the third standard sequence from the standard internal resistance in the first +1 group of standard battery parameters in the third standard sequence to obtain a first numerical value in a sixth sequence;
(4) l + 1; if l is less than M, skipping to the step of subtracting the standard internal resistance in the l group of standard battery parameters in the third standard sequence from the standard internal resistance in the l +1 group of standard battery parameters in the third standard sequence as the l group of standard battery parameters in the sixth sequence and continuing to execute the step;
(5) and subtracting the standard internal resistance in the 1 st group of standard battery parameters in the third standard sequence from the standard internal resistance in the Mth group of standard battery parameters in the third standard sequence to obtain the Mth numerical value in the sixth sequence.
For example, the target battery is subjected to constant current charging three times, and the three groups of measured battery parameters are (V)1，IR1)、(V2，IR2)、(V3，IR3) The corresponding standard voltage parameters are respectively (V)11，IR11)、(V12，IR12)、(V13，IR13). Calculating a fifth sequence: IR2-IR1、IR3-IR2、IR3-IR1And, simultaneously calculating a sixth sequence: IR12-IR11、IR13-IR12、IR13-IR11. And (3) subtracting each numerical value in the fifth sequence from the corresponding numerical value in the sixth sequence one by one to obtain a seventh sequence: IR2-IR1-(IR12-IR11)、IR3-IR2-(IR13-IR12)、IR3-IR1-(IR13-IR11) And determining whether each value in the seventh sequence is within a second preset error range, and if there is data exceeding the second preset error range, determining that the AGM separator of the target battery is damaged.
Furthermore, the difference value between each constant current charging can be calculated respectively, and the detection accuracy is improved. For example, the target battery is subjected to constant current charging four times, and the four measured battery parameters are respectively (V)1，IR1)、(V2，IR2)、(V3，IR3)、(V3，IR4) Not only calculate V2-V1、V3-V2、V4-V3、V4-V1Can also increase V4-V2And the detection accuracy is improved.
In some embodiments, the first predetermined tolerance range may be 1.5% of the positive standard internal resistance value and 1.5% of the negative standard internal resistance value.
In some embodiments, the second predetermined tolerance range may be 3% of the positive standard internal resistance value and 3% of the negative standard internal resistance value.
In some embodiments, the target saturation is one of a plurality of preset saturations; the above method may further comprise:
s104: acquiring a standard battery parameter of the sample battery with the preset saturation when each constant current charging is finished for each preset saturation; wherein the initial state of the sample battery with the preset saturation is fully charged, and the AGM separator of the sample battery with the preset saturation is not damaged;
s105: forming a standard battery parameter table by the standard battery parameters of each sample battery with preset saturation respectively at the end of each constant current charging; the number of constant current charging times of the sample battery is the same as that of the target battery; the current and the charging time of each constant current charging of the sample battery are the same as those of each constant current charging of the target battery.
In the embodiment of the invention, the normal sample batteries with different preset saturation degrees can be subjected to constant current charging for multiple times in the same charging mode to obtain the voltage and the internal resistance of the sample batteries with different preset saturation degrees, so as to form the standard battery parameter table. Comparing the data in the standard battery parameter table with the actually measured battery parameters of the target battery to determine whether the voltage and the internal resistance of the target battery and the variation of the voltage and the internal resistance are basically consistent with those of a normal battery with the same saturation; if the battery voltage is consistent with the target battery voltage, the target battery is a normal battery. If the difference is large, it indicates that the AGM separator of the objective battery may be damaged. For example, the standard battery parameter table refers to table 1. For a fully charged cell, the typical saturation range is between 91% and 99%, and thus, the plurality of preset saturations may include: 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%.
It should be noted that the current and charging time for charging the sample battery multiple times must be consistent with the charging condition of the target battery. For example, for sample cells, I1Charging for 1h, I2Charging for 1h, I3Charging for 1 h. Similarly, for the target cell, I should be given in sequence1Charging for 1h, I2Charging for 1h, I3Charging for 1 h.
TABLE 1 Standard Battery parameter Table
In some embodiments, the target battery may have the same duration of each constant current charge.
In some embodiments, the charging duration may be 1 h. Specifically, the charging time period may also be set according to the actual application requirement.
In some embodiments, the current of each constant current charge of the target battery may be different.
The abnormal characteristics of the battery are more easily shown by adopting different current charging, so that the embodiment of the invention adopts different current constant current charging, for example, I1、I2And I3All are different. The detection method is beneficial to finding out the abnormity of the battery, and improves the damage detection accuracy of the AGM separator.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In correspondence to the above embodiments, referring to fig. 2, an embodiment of the present invention further provides an AGM battery separator damage detection apparatus, including:
a first parameter obtaining module 21, configured to obtain a target saturation of the target battery;
the second parameter obtaining module 22 is configured to obtain actually measured battery parameters of the target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full;
and the result output module 23 is configured to determine whether the AGM separator of the target battery is damaged according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging.
In some embodiments, the result output module 23 may include:
the table look-up unit 231 is used for obtaining standard battery parameters corresponding to the measured battery parameters of each group according to the target saturation and the standard battery parameter table; the standard battery parameters include: standard voltage and standard internal resistance;
and a state determining unit 232, configured to determine whether the AGM separator of the target battery is damaged according to the measured battery parameters of each group and the standard battery parameters corresponding to the measured battery parameters of each group.
In some embodiments, the state determination unit 232 may include:
a first error determination subunit 2321, configured to determine, for each set of actually measured battery parameters, a voltage difference between an actually measured voltage in the set of actually measured battery parameters and a standard voltage in a standard battery parameter corresponding to the set of actually measured battery parameters, and determine whether the voltage difference is greater than a preset voltage difference; if the voltage difference value is larger than the preset voltage difference value, determining that the AGM separator of the target battery is damaged;
a second error determination subunit 2322, configured to determine, for each set of actually-measured battery parameters, an internal resistance difference between the actually-measured internal resistance in the set of actually-measured battery parameters and the standard internal resistance in the standard battery parameters corresponding to the set of actually-measured battery parameters, and determine whether the internal resistance difference is greater than a preset internal resistance difference; and if the internal resistance difference value is larger than the preset internal resistance difference value, determining that the AGM separator of the target battery is damaged.
In some embodiments, the state determination unit 232 may further include:
a sorting subunit 2323, configured to sort the sets of actually measured battery parameters according to the charging sequence to obtain a first sequence;
an initial value setting subunit 2324 configured to set an initial value of i, where i is 1;
a first sequence generation subunit 2325, configured to subtract the actual measured voltage in the i +1 th set of actual measured battery parameters in the first sequence from the actual measured voltage in the i th set of actual measured battery parameters in the first sequence, and use the subtracted voltage as the i-th numerical value in the second sequence;
a loop subunit 2326 for i ═ i + 1; if i is less than M, skipping to the step of subtracting the actual measurement voltage in the ith group of actual measurement battery parameters in the first sequence from the actual measurement voltage in the (i + 1) th group of actual measurement battery parameters in the first sequence as the ith numerical value in the second sequence to continue execution;
a second sequence generating subunit 2327, configured to subtract the actually measured voltage in the mth group of actually measured battery parameters in the first sequence from the actually measured voltage in the 1 st group of actually measured battery parameters in the first sequence, and use the subtracted voltage as an mth numerical value in the second sequence; wherein M is the number of constant current charging times;
a standard sequence generating subunit 2328, configured to determine a third sequence according to each set of standard battery parameters; wherein the third sequence comprises M numbers;
an error value determining subunit 2329, configured to sequentially and respectively subtract each value in the third sequence from each value in the second sequence to obtain a fourth sequence;
a third error determination subunit 23210, configured to determine whether a value outside the first preset error range exists in the fourth sequence, and if so, determine that the AGM separator of the target battery is damaged.
In some embodiments, the standard sequence generation subunit 2328 may be specifically configured to:
1. sorting standard battery parameters corresponding to each set of actually-measured battery parameters respectively according to the sequence of each set of actually-measured battery parameters in the first sequence to obtain a third standard sequence;
2. setting an initial value of j, wherein j is 1;
3. subtracting the standard voltage in the jth group of standard battery parameters in the third standard sequence from the standard voltage in the jth group of standard battery parameters in the third standard sequence to obtain a jth numerical value in the third sequence;
4. j is j + 1; if j is less than M, skipping to the step of subtracting the standard voltage in the j group of standard battery parameters in the third standard sequence from the standard voltage in the j +1 group of standard battery parameters in the third standard sequence as the j group of standard battery parameters in the third standard sequence and continuing to execute the step;
5. and subtracting the standard voltage in the 1 st group of standard battery parameters in the third standard sequence from the standard voltage in the M group of standard battery parameters in the third standard sequence to obtain the M number value in the third sequence.
In some embodiments, the target saturation is one of a plurality of preset saturations; the above apparatus may further include:
a standard battery parameter obtaining module 24, configured to obtain, for each preset saturation, a standard battery parameter of the sample battery at the preset saturation when each constant current charging is completed; wherein the initial state of the sample battery with the preset saturation is fully charged, and the AGM separator of the sample battery with the preset saturation is not damaged;
a standard battery parameter table forming module 25, configured to form a standard battery parameter table with the standard battery parameters of each sample battery with the preset saturation when each constant current charging is finished;
the number of constant current charging times of the sample battery is the same as that of the target battery; the current and the charging time of each constant current charging of the sample battery are the same as those of each constant current charging of the target battery.
In some embodiments, the target battery may have the same duration of each constant current charge.
In some embodiments, the current of each constant current charge of the target battery may be different.
It should be clearly understood by those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is merely used as an example, and in practical applications, the foregoing function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the detection terminal is divided into different functional units or modules to perform all or part of the above-described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the above-mentioned apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 3 is a schematic block diagram of a detection terminal according to an embodiment of the present invention. As shown in fig. 3, the detection terminal 4 of this embodiment includes: one or more processors 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processors 40. The processor 40, when executing the computer program 42, implements the steps in the various AGM battery separator damage detection method embodiments described above, such as steps S101-S103 shown in fig. 1. Alternatively, the processor 40, when executing the computer program 42, implements the functionality of each module/unit in the above described embodiment of the AGM battery separator damage detection apparatus, such as the modules 21 to 23 shown in FIG. 2.
Illustratively, the computer program 42 may be divided into one or more modules/units, which are stored in the memory 41 and executed by the processor 40 to accomplish the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 42 in the detection terminal 4. For example, the computer program 42 may be divided into the first parameter acquisition module 21, the second parameter acquisition module 22, and the result output module 23.
A first parameter obtaining module 21, configured to obtain a target saturation of the target battery;
the second parameter obtaining module 22 is configured to obtain actually measured battery parameters of the target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the actually measured battery parameters comprise: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full;
and the result output module 23 is configured to determine whether the AGM separator of the target battery is damaged according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging.
Other modules or units are not described in detail herein.
The detection terminal 4 includes, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that fig. 3 is only one example of a detection terminal and does not constitute a limitation of the detection terminal 4, and may include more or less components than those shown, or combine some components, or different components, for example, the detection terminal 4 may further include an input device, an output device, a network access device, a bus, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the test terminal, such as a hard disk or a memory of the test terminal. The memory 41 may also be an external storage device of the detection terminal, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the detection terminal. Further, the memory 41 may also include both an internal storage unit of the detection terminal and an external storage device. The memory 41 is used for storing computer programs 42 and other programs and data needed for detecting the terminal. The memory 41 may also be used to temporarily store data that has been output or is to be output.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed detection terminal and method may be implemented in other ways. For example, the above-described embodiments of the detection terminal are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments described above may be implemented by a computer program, which is stored in a computer readable storage medium and used by a processor to implement the steps of the embodiments of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may include any suitable increase or decrease as required by legislation and patent practice in the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. An AGM battery separator damage detection method, comprising:
acquiring a target saturation of a target battery;
respectively acquiring actual measurement battery parameters of the target battery at the end of each constant current charging; wherein the number of constant current charging is at least three; the measured battery parameters include: actually measuring voltage and actually measuring internal resistance; the initial state of the target battery is full;
and determining whether the AGM separator of the target battery is damaged or not according to the target saturation and the actual measurement battery parameters of the target battery at the end of each constant current charging.
2. The AGM battery separator damage detection method according to claim 1, wherein said determining based on said target saturation and said target battery's measured battery parameters at the end of each constant current charge comprises:
obtaining standard battery parameters corresponding to each set of actually measured battery parameters according to the target saturation and the standard battery parameter table; the standard battery parameters include: standard voltage and standard internal resistance;
and determining whether the AGM separator of the target battery is damaged or not according to the measured battery parameters of each group and the standard battery parameters corresponding to the measured battery parameters of each group.
3. The method for detecting damage to an AGM battery separator according to claim 1, wherein said determining whether the AGM separator of the target battery is damaged according to the measured battery parameters and the standard battery parameters corresponding to the measured battery parameters comprises:
for each set of actually-measured battery parameters, determining a voltage difference value between an actually-measured voltage in the set of actually-measured battery parameters and a standard voltage in a standard battery parameter corresponding to the set of actually-measured battery parameters, and determining whether the voltage difference value is greater than a preset voltage difference value; if the voltage difference value is larger than the preset voltage difference value, determining that the AGM separator of the target battery is damaged;
aiming at each set of actually-measured battery parameters, determining an internal resistance difference value between the actually-measured internal resistance in the set of actually-measured battery parameters and the standard internal resistance in the standard battery parameters corresponding to the set of actually-measured battery parameters, and determining whether the internal resistance difference value is larger than a preset internal resistance difference value; and if the internal resistance difference value is larger than the preset internal resistance difference value, determining that the AGM separator of the target battery is damaged.
4. The method for detecting damage to an AGM battery separator according to claim 1, wherein said determining whether the AGM separator of the target battery is damaged according to the measured battery parameters and the standard battery parameters corresponding to the measured battery parameters, further comprises:
sequencing each set of actually measured battery parameters according to the charging sequence to obtain a first sequence;
setting an initial value of i, wherein i is 1;
subtracting the actual measurement voltage in the ith group of actual measurement battery parameters in the first sequence from the actual measurement voltage in the (i + 1) th group of actual measurement battery parameters in the first sequence to be used as the ith numerical value in the second sequence;
i is i + 1; if i < M, skipping to the step of subtracting the measured voltage in the ith group of measured battery parameters in the first sequence from the measured voltage in the (i + 1) th group of measured battery parameters in the first sequence as the ith numerical value in the second sequence for continuous execution;
subtracting the measured voltage in the 1 st group of measured battery parameters in the first sequence from the measured voltage in the Mth group of measured battery parameters in the first sequence to be used as the Mth numerical value in the second sequence; wherein M is the number of times of the constant current charging;
determining a third sequence according to each group of standard battery parameters; wherein the third sequence comprises M numbers;
sequentially and respectively subtracting each corresponding numerical value in the third sequence from each numerical value in the second sequence to obtain a fourth sequence;
and determining whether a value outside a first preset error range exists in the fourth sequence, and if so, determining that the AGM separator of the target battery is damaged.
5. The AGM battery separator damage detection method according to claim 4 wherein said determining a third sequence based on each set of standard battery parameters comprises:
sorting standard battery parameters respectively corresponding to each group of actually measured battery parameters according to the sequence of each group of actually measured battery parameters in the first sequence to obtain a third standard sequence;
setting an initial value of j, wherein j is 1;
subtracting the standard voltage in the jth group of standard battery parameters in the third standard sequence from the standard voltage in the jth +1 group of standard battery parameters in the third standard sequence to obtain a jth numerical value in the third sequence;
j is j + 1; if j is less than M, skipping to the step of subtracting the standard voltage in the j group of standard battery parameters in the third standard sequence from the standard voltage in the j +1 group of standard battery parameters in the third standard sequence to be used as the j number value in the third sequence and continuing to execute the step;
and subtracting the standard voltage in the 1 st group of standard battery parameters in the third standard sequence from the standard voltage in the M group of standard battery parameters in the third standard sequence to obtain the M-th numerical value in the third sequence.
6. The AGM battery separator damage detection method according to claim 2 wherein the target saturation is one of a plurality of preset saturations; the method further comprises the following steps:
acquiring standard battery parameters of the sample battery with the preset saturation when each constant current charging is finished aiming at each preset saturation; wherein the initial state of the sample battery with the preset saturation is fully charged, and the AGM separator of the sample battery with the preset saturation is not damaged;
forming standard battery parameters of each sample battery with preset saturation at the end of each constant current charging into the standard battery parameter table;
the number of times of constant current charging of the sample battery is the same as that of the target battery; the current and the charging time of each constant current charging of the sample battery are the same as those of each constant current charging of the target battery.
7. The AGM battery separator damage detection method according to any one of claims 1 to 6 wherein the target battery is each constant current charged for the same period of time.
8. The AGM battery separator damage detection method according to any one of claims 1 to 6, wherein the target battery has different current for each constant current charge.
9. A detection terminal comprising a memory, a processor and a computer program stored in said memory and executable on said processor, wherein said processor when executing said computer program performs the steps of the AGM battery separator damage detection method according to any one of the claims 1 to 8.
10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the AGM battery separator damage detection method according to any one of the claims 1 to 8.
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| CN202111451494.1A CN114217239A (en) | 2021-11-30 | 2021-11-30 | AGM battery separator damage detection method and detection terminal |
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| CN202111451494.1A CN114217239A (en) | 2021-11-30 | 2021-11-30 | AGM battery separator damage detection method and detection terminal |
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| CN114217239A true CN114217239A (en) | 2022-03-22 |
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