CN108387847B - Charging and discharging test method for rechargeable battery, computer equipment and storage medium - Google Patents
Charging and discharging test method for rechargeable battery, computer equipment and storage medium Download PDFInfo
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- CN108387847B CN108387847B CN201810167819.5A CN201810167819A CN108387847B CN 108387847 B CN108387847 B CN 108387847B CN 201810167819 A CN201810167819 A CN 201810167819A CN 108387847 B CN108387847 B CN 108387847B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The application relates to a charging and discharging test method for a rechargeable battery, computer equipment and a storage medium. The method comprises the following steps: acquiring current working parameters of the rechargeable battery; if the current working parameters meet a first preset condition, performing a first type of test on the rechargeable battery until the first type of test is completed; acquiring working parameters of the rechargeable battery after the first-class test is finished; if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished; the first type of test is a discharge test/charge test, and the second type of test is a charge test/discharge test. By adopting the method, the service life of the rechargeable battery can be prevented from being reduced, and meanwhile, the safety of the charge and discharge test is ensured.
Description
Technical Field
The present disclosure relates to the field of battery testing technologies, and in particular, to a charging and discharging testing method for a rechargeable battery, a computer device, and a storage medium.
Background
The rechargeable battery can activate the active substance to be continuously used in a charging mode after the battery is discharged, has the advantages of economy and environmental protection, and is more and more widely used. In order to detect the performance such as the capacity and the service life of the rechargeable battery, a charging and discharging test is usually performed on the rechargeable battery.
In a conventional method for performing a charge and discharge test on a rechargeable battery, the rechargeable battery is mostly charged and discharged according to a set charge and discharge mode, for example, constant current charging and then constant voltage charging are performed to make a voltage reach a set value, then discharging is performed, and data in a charging process and a discharging process are collected to perform performance analysis. Such charging and discharging is likely to cause a decrease in the life of the rechargeable battery due to continuous charging and overcharge when the rechargeable battery has a large capacity or continuous discharging and overdischarge when the capacity is too low.
Disclosure of Invention
In view of the above, it is desirable to provide a charging and discharging test method for a rechargeable battery, a computer device, and a storage medium, which can avoid the reduction of the life of the rechargeable battery.
A method for testing charging and discharging of a rechargeable battery, the method comprising:
acquiring current working parameters of the rechargeable battery;
if the current working parameters meet a first preset condition, performing a first type test on the rechargeable battery until the first type test is finished;
acquiring working parameters of the rechargeable battery after the first-class test is finished;
if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished; the first type of test is a discharge test/charge test, and the second type of test is a charge test/discharge test.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring current working parameters of the rechargeable battery;
if the current working parameters meet a first preset condition, performing a first type test on the rechargeable battery until the first type test is finished;
acquiring working parameters of the rechargeable battery after the first-class test is finished;
if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished; the first type of test is a discharge test/charge test, and the second type of test is a charge test/discharge test.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring current working parameters of the rechargeable battery;
if the current working parameters meet a first preset condition, performing a first type test on the rechargeable battery until the first type test is finished;
acquiring working parameters of the rechargeable battery after the first-class test is finished;
if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished; the first type of test is a discharge test/charge test, and the second type of test is a charge test/discharge test.
According to the charging and discharging test method of the rechargeable battery, the computer equipment and the storage medium, before the first type of test is carried out on the rechargeable battery, the current working parameters of the rechargeable battery are obtained, and the first type of test is carried out and completed if the current working parameters meet the first preset condition, so that the problem that the performance of the rechargeable battery is reduced due to the fact that the first type of test is carried out when the rechargeable battery is not suitable for the first type of test can be avoided; before the secondary test is carried out on the rechargeable battery, the working parameters of the rechargeable battery after the primary test is finished are obtained, if the working parameters after the primary test are finished meet the second preset condition, the secondary test is carried out and finished, and the problem that the performance of the rechargeable battery is reduced due to the fact that the secondary test is carried out when the rechargeable battery is not suitable for the secondary test can be avoided. Therefore, the over-discharge and over-charge of the rechargeable battery can be avoided by the first type of test as the discharge test/charge test and the second type of test as the charge test/discharge test, the service life of the rechargeable battery is prevented from being reduced, and meanwhile, the safety of the charge and discharge test is ensured.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of a method for testing charging and discharging of a rechargeable battery;
FIG. 2 is a schematic flow chart illustrating a method for testing charging and discharging of a rechargeable battery according to an embodiment;
FIG. 3 is a flow chart illustrating a first type of test performed on a rechargeable battery until the first type of test is completed according to an embodiment;
FIG. 4 is a flow diagram illustrating a process of performing a second type of test on a rechargeable battery until the second type of test is completed, according to one embodiment;
FIG. 5 is a schematic flow chart of a charging and discharging test method for a rechargeable battery in an application example;
FIG. 6 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The charging and discharging test method for the rechargeable battery can be applied to the application environment shown in fig. 1. The terminal 102 is connected to a charging/discharging circuit 104, and the charging/discharging circuit 104 is connected to a rechargeable battery 106. The terminal 102 acquires the current working parameters of the rechargeable battery 106, and if the current working parameters meet a first preset condition, the terminal 102 can control the charging and discharging circuit 104 to realize a first type of test on the rechargeable battery 106 until the first type of test is completed; the terminal 102 obtains the working parameters of the rechargeable battery 106 after the first type of test is completed, and if the working parameters after the first type of test is completed meet a second preset condition, the terminal 102 performs a second type of test on the rechargeable battery 106 by controlling the charging and discharging circuit 104 until the second type of test is completed. The rechargeable battery 106 may be a battery pack formed by a plurality of single battery cells, or may be a battery of one single battery cell. The terminal 102 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, as shown in fig. 2, a method for testing charging and discharging of a rechargeable battery is provided, which is exemplified by the application of the method to the terminal in fig. 1, and includes the following steps:
s220: and acquiring the current working parameters of the rechargeable battery.
The operating parameters of the rechargeable battery may be various and may include, for example, voltage, current, etc. Specifically, the current working parameters can be read from the data acquisition device, and the data can be read from the data acquisition device, and the required working parameters can be calculated according to the read data.
S240: and if the current working parameters meet the first preset condition, performing a first type of test on the rechargeable battery until the first type of test is finished.
The first type of test is a discharge test/charge test. That is, the first type of test is one of a discharge test and a charge test. The first preset condition is a condition which needs to be met by the first type of test, and can be specifically set according to actual needs. Specifically, the current operating parameter may be compared with a corresponding setting range, and whether the current operating parameter meets the first preset condition may be detected according to a comparison result.
S260: and acquiring the working parameters of the rechargeable battery after the first-type test is finished.
The operating parameters of the rechargeable battery may change due to charging/discharging. The working parameters of the rechargeable battery after the first type of test is finished can reflect the current new state of the rechargeable battery.
S280: and if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished.
The second type of test corresponds to the first type of test, which is a charge/discharge test. That is, the second type of test is one of a charge test and a discharge test, and the second type of test is different from the first type of test. For example, if the first type of test is a discharge test, the second type of test is a charge test; if the first type of test is a charge test, the second type of test is a discharge test.
The second preset condition is a condition which needs to be met by the second type of test and can be specifically set according to actual needs. Specifically, the working parameters after the first type of test is completed may be compared with the corresponding setting range, and whether the working parameters after the first type of test meet the second preset condition is detected according to the comparison result.
In the charging and discharging test method for the rechargeable battery, the current working parameters of the rechargeable battery are obtained before the first type of test is carried out on the rechargeable battery, and the first type of test is carried out and completed if the current working parameters meet the first preset condition, so that the problem that the performance of the rechargeable battery is reduced because the first type of test is carried out when the rechargeable battery is not suitable for the first type of test can be avoided; before the secondary test is carried out on the rechargeable battery, the working parameters of the rechargeable battery after the primary test is finished are obtained, if the working parameters after the primary test are finished meet the second preset condition, the secondary test is carried out and finished, and the problem that the performance of the rechargeable battery is reduced due to the fact that the secondary test is carried out when the rechargeable battery is not suitable for the secondary test can be avoided. Therefore, the over-discharge and over-charge of the rechargeable battery can be avoided by the first type of test as the discharge test/charge test and the second type of test as the charge test/discharge test, the service life of the rechargeable battery is prevented from being reduced, and meanwhile, the safety of the charge and discharge test is ensured.
Specifically, the method for testing charging and discharging of the rechargeable battery further comprises the following steps: if the current working parameters do not meet the first preset condition, sending corresponding error information, and finishing the charge and discharge test; and if the working parameters after the first type of test is finished do not meet the second preset condition, sending corresponding error information and finishing the charge and discharge test.
The error information is used for prompting that the working parameters do not meet the requirements of the charge and discharge test. For example, the error information sent when the current working parameter does not satisfy the first preset condition may be "the first type of test cannot be performed", and the error information sent when the working parameter after the first type of test does not satisfy the second preset condition may be "the second type of test cannot be performed". By sending the error prompt information, the staff can know the situation in time. Specifically, the error information may be sent to a display device for displaying, so that the worker can conveniently check the error information.
In one embodiment, the rechargeable battery to be subjected to the charge and discharge test is a battery pack composed of a plurality of single battery cells. The operating parameters include adjusting the total capacity, the voltage of each cell in the rechargeable battery, and the temperature of the plurality of cells. Wherein the adjusted total capacity is a total charge capacity or a total discharge capacity of the rechargeable battery; specifically, if the rechargeable battery is charged, the total capacity is adjusted to the total charging capacity, and if the rechargeable battery is discharged, the total capacity is adjusted to the total discharging capacity. Step S220 includes: acquiring the current voltage of each single battery cell, the current temperature of the plurality of single battery cells and the current total current of the rechargeable battery at preset intervals; and calculating the current adjustment total capacity according to the current total current, the previous total current and the previous adjustment total capacity.
The preset interval can be set according to actual needs. For example, in the present embodiment, the preset interval may be 5 seconds. Specifically, the current voltage of each single battery cell can be acquired by a multi-channel voltage collector connected with each single battery cell, the current temperature of a plurality of single battery cells can be acquired by a multi-channel temperature collector connected with the plurality of single battery cells, and the total current of the rechargeable battery can be measured by a current measuring device.
The current adjustment total capacity of the rechargeable battery is obtained by collecting the current voltage of each single battery cell and the current temperature of a plurality of single battery cells and calculating according to the collected total current, on one hand, the working parameters comprise various and comprehensive data; on the other hand, the voltage of each single battery cell and the temperature of a plurality of single battery cells are collected instead of the total voltage and the single-point temperature, so that the data detection is more detailed.
In one embodiment, calculating the current adjusted total capacity according to the current total current, the previous total current and the previous adjusted total capacity includes: calculating the sum of the current total current and the previous total current; calculating to obtain a capacity increase value according to the sum value and a preset interval; and calculating the sum value of the previous adjusted total capacity and the capacity increasing value to obtain the current adjusted total capacity.
And calculating the sum of the current total current and the previous total current, namely num 1-Val (cc) + Val (curr), wherein Val (cc) is the previous total current, Val (curr) is the current total current, and num1 is the sum. The total current and the adjusted total capacity of the previous time are the total current and the corresponding adjusted total capacity of the previous time for acquiring the total current at present. Specifically, if the current acquisition is the first time, the preset current is obtained as the total current of the previous time, and the preset capacity is obtained as the adjusted total capacity of the previous time.
The current adjustment total capacity is obtained by calculating according to the previous total current, the adjustment total capacity and the current total current, so that the calculation method is unified and is simple and feasible.
In one embodiment, calculating the capacity increase value according to the sum and the preset interval includes:
capt＝(num1/2)*T/3600；
where num1 is a sum, T is a preset interval, T is in seconds, and divided by 3600 to convert to hours, captFor a capacity increase value. It will be appreciated that if T is in units of hours, then:
capt＝(num1/2)*T；
correspondingly, the sum of the previous adjusted total capacity and the capacity increase value is calculated to obtain the current adjusted total capacity as follows: the current total capacity of adjustment cap ═ cap0+capt(ii) a Wherein, cap0The total capacity was adjusted for the previous time. The final adjusted total capacity can be obtained by accumulating the capacity of each preset interval during the charging or discharging process.
In one embodiment, the first preset condition includes: the difference value of the current voltage between any two monomer battery cores in the rechargeable battery is smaller than or equal to the preset pressure difference, the collected current temperatures of the plurality of monomer battery cores are smaller than or equal to the preset temperature, and the current adjusted total capacity of the rechargeable battery is smaller than the preset low capacity. The second preset condition includes: the difference value of the current voltage between any two monomer battery cores in the rechargeable battery is smaller than or equal to the preset pressure difference, the collected current temperatures of the plurality of monomer battery cores are smaller than or equal to the preset temperature, and the current adjusted total capacity of the rechargeable battery is smaller than the preset high capacity. Correspondingly, the first type of test is a discharge test, and the second type of test is a charge test.
The preset pressure difference, the preset temperature, the preset low capacity and the preset high capacity can be specifically set according to actual needs, the preset low capacity represents the maximum capacity allowed to be discharged, and the preset high capacity represents the maximum capacity allowed to be charged. The first condition is that: the difference value of the current voltage between any two monomer battery cores in the rechargeable battery is smaller than or equal to a preset voltage difference; if the first condition is met, it indicates that there is no large pressure difference between the individual battery cells, and no single individual battery cell is overcharged or overdischarged. The second condition is that: the current temperature of each of the plurality of single battery cells is less than or equal to a preset temperature; if the second condition is met, the local temperature of the rechargeable battery is not increased sharply; the third condition is that: the current adjustment total capacity of the rechargeable battery is smaller than the preset low capacity; if the third condition is satisfied, the rechargeable battery can still be discharged, and the rechargeable battery cannot be overdischarged. The fourth condition is that: the current adjustment total capacity of the rechargeable battery is smaller than the preset high capacity; if the fourth condition is met, the rechargeable battery can be charged, and overcharging is avoided. If the first preset condition is met, the first condition, the second condition and the third condition need to be met simultaneously, and if the second preset condition is met, the first condition, the second condition and the fourth condition need to be met simultaneously; therefore, a plurality of conditions are limited, overcharge, overdischarge, overhigh temperature and overlarge pressure difference can be avoided, and the reliability and safety of charge and discharge tests are improved. It is understood that in other embodiments, the first preset condition and the second preset condition may be other.
In one embodiment, referring to fig. 3, the first type test is performed on the rechargeable battery in step S240 until the first type test is completed, including steps S241 to S244.
S241: and sending a starting instruction of the first type of test to the charging and discharging circuit.
The starting instruction of the first type of test is used for controlling the charging/discharging circuit to discharge/charge the rechargeable battery. Specifically, if the first type of test is a discharge test, the start instruction of the first type of test is used for controlling the charge and discharge circuit to discharge the rechargeable battery; and if the first type of test is a charging test, the starting instruction of the first type of test is used for controlling the charging and discharging circuit to charge the rechargeable battery.
S242: and acquiring the working parameters of the rechargeable battery in the discharging/charging process.
The terminal can read the working parameters of the rechargeable battery in the discharging/charging process from the data acquisition device. Specifically, the specific implementation manner of acquiring the working parameters of the rechargeable battery in the discharging/charging process is the same as that of acquiring the current working parameters of the rechargeable battery in step S220, and details are not repeated here.
S243: and judging whether the working parameters in the discharging/charging process meet a first preset condition or not.
If the working parameters in the discharging/charging process meet the first preset condition, returning to the step S241; otherwise, step S244 is executed.
S244: and sending a stopping instruction of the first type test to the charging and discharging circuit.
And sending a stop instruction of the first type test, so as to finish the first type test. The stop instruction of the first type of test is used for controlling the charging and discharging circuit to stop discharging/charging the rechargeable battery. Specifically, if the first type of test is a discharge test, the stop instruction of the first type of test is used for controlling the charge and discharge circuit to stop discharging the rechargeable battery; if the first type of test is a charging test, the stop instruction of the first type of test is used for controlling the charging and discharging circuit to stop charging the rechargeable battery.
In the discharging/charging process, if the working parameters of the rechargeable battery in the discharging/charging process meet first preset conditions, the starting instruction is repeatedly sent to circularly discharge/charge the rechargeable battery until the working parameters of the rechargeable battery in the discharging/charging process do not meet the first preset conditions, the first type of test is completed, user participation is not needed, and the automation degree is high.
In one embodiment, after step S242 and before step S243, the method further includes the steps of: and storing and displaying the operating parameters of the rechargeable battery during the discharging/charging process. The obtained working parameters are stored so as to be convenient for a user to view; the acquired working parameters are displayed, so that data are visualized and the use is convenient.
Specifically, after the operating parameters of the rechargeable battery during the discharging/charging process are stored and displayed, step S243 is executed again at a set interval. For example, in this embodiment, the set time may be 5 seconds.
In one embodiment, the first type of test is a discharge test and the second type of test is a charge test. After step S240 and before step S260, the method further includes the steps of: judging whether a preset circulating condition is met or not according to working parameters in the discharging process; if yes, go to step S260. Specifically, if the preset cycle condition is not satisfied, the charge and discharge test is ended. Correspondingly, in step S280, the performing a second type of test on the rechargeable battery until after the second type of test is completed further includes: and waiting for the preset standing time, and returning to the step S220.
By judging the cycle conditions after the first type of test is completed and before the second type of test is started, the step S220 is returned to repeat the first type of test after the second type of test is completed, so that the charge and discharge test can be automatically circulated for multiple times, and the rechargeable battery is kept static before the step S220 is returned, so that the charge and discharge are more stable.
In one embodiment, the operating parameter includes adjusting the total capacity. For example, the operating parameters include the voltage of each cell in the rechargeable battery, the temperature of the plurality of cells, and the adjusted total capacity. In this embodiment, the determining whether the preset cycle condition is satisfied according to the working parameter in the discharging process includes: recording the cycle times, and calculating the health degree of the rechargeable battery according to the total adjustment capacity and the preset rated capacity in the discharging process; if the health degree is greater than or equal to a preset value, judging whether the cycle number reaches a preset number; and if the cycle times do not reach the preset times, the working parameters in the discharging process meet the cycle conditions. Specifically, if the health degree is less than the preset value, the cycle condition is not satisfied, and the charge and discharge test is ended. If the cycle times reach the preset times, the cycle conditions are not met, and the charge and discharge test is finished.
The preset rated capacity, the preset value and the preset times can be specifically set according to actual needs. The health degree is a numerical value indicating the state of health of the rechargeable battery. The health degree is greater than or equal to a preset value, which indicates that the rechargeable battery is in a good health state and can continue to charge and discharge; and if the health degree is less than the preset value, the rechargeable battery needs to be replaced. In this embodiment, the preset value is 80%. Specifically, the number of cycles may be recorded as 1 when the first type of test is completed for the first time, and then 1 is added to the recorded number of cycles after each first type of test is completed.
Whether the circulation condition is met or not is judged by detecting the health degree and the circulation frequency of the rechargeable battery, and the circulation charging and discharging under the condition that the health state of the rechargeable battery is not good can be avoided, so that the service life of the rechargeable battery is further prevented from being reduced, and the test safety is improved.
In one embodiment, calculating the health of the rechargeable battery according to the adjusted total capacity and the preset rated capacity during the discharging process comprises:
SOH＝Qnow/Qnew*100％；
wherein Q isnowFor adjusting the total capacity, Q, during dischargenewTo preset rated capacity, SOH is the health of the rechargeable battery. In this embodiment, QnowI.e. the current adjusted total capacity cap during the discharging process, is equal to the maximum capacity that can be released by the rechargeable battery.
In one embodiment, the step S260 may be to obtain the operating parameters of the rechargeable battery after the first type of test is completed after waiting for the preset standing time. The battery is charged and discharged by standing, so that the charging and discharging are more stable. Specifically, the obtaining of the working parameters after the first-type test is completed is the same as the specific implementation manner of step S220, and is not described herein again.
In one embodiment, referring to fig. 4, in step S280, the second type of test is performed on the rechargeable battery until the second type of test is completed, including steps S281 to S284.
S281: and sending a starting instruction of the second type of test to the charging and discharging circuit.
The starting instruction of the second type of test is used for controlling the charging/discharging circuit to charge/discharge the rechargeable battery. Specifically, if the second type of test is a charging test, the starting instruction of the second type of test is used for controlling the charging and discharging circuit to charge the rechargeable battery; and if the second type of test is a discharge test, the starting instruction of the second type of test is used for controlling the charge and discharge circuit to discharge the rechargeable battery.
S282: and acquiring the working parameters of the rechargeable battery in the charging/discharging process.
Specifically, the specific implementation manner of acquiring the working parameters of the rechargeable battery during the charging/discharging process is the same as that of acquiring the current working parameters of the rechargeable battery in step S220, and is not described herein again.
S283: and judging whether the working parameters in the charging/discharging process meet a second preset condition or not.
If the working parameters in the charging/discharging process satisfy the second preset condition, returning to step S281; otherwise, step S284 is executed.
S284: and sending a stopping instruction of the second type of test to the charging and discharging circuit.
And sending a stop instruction of the second test to finish the second type of test. The stop instruction of the second type of test is used for controlling the charging and discharging circuit to stop charging/discharging the rechargeable battery.
In the charging/discharging process, if the working parameters of the rechargeable battery in the charging/discharging process meet second preset conditions, the starting instruction is repeatedly sent to circularly discharge/charge the rechargeable battery until the working parameters of the rechargeable battery in the charging/discharging process do not meet the second preset conditions, the second type of test is completed, user participation is not needed, and the automation degree is high.
In one embodiment, after step S282 and before step S283, the method further includes the steps of: and storing and displaying the operating parameters of the rechargeable battery during the charging/discharging process. The obtained working parameters are stored so as to be convenient for a user to view; the acquired working parameters are displayed, so that data are visualized and the use is convenient.
Specifically, after the operating parameters of the rechargeable battery during the charging/discharging process are stored and displayed, step S283 is executed again at a set interval.
It should be understood that although the various steps in the flow charts of fig. 2-4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
To better explain the present application, an application example of applying the above-mentioned charging/discharging test method for a rechargeable battery to a battery pack is described, as shown in fig. 5. The first type of test is a discharge test and the second type of test is a charge test. The preset parameters comprise a preset interval, a preset pressure difference, a preset temperature, a preset low capacity, a preset high capacity, a preset rated capacity, a preset number of times and a preset standing time; the data operation is specifically to calculate and obtain the current total adjustment capacity; SOH is the health of the rechargeable battery.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 6. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program realizes a charging and discharging test method of the rechargeable battery when being executed by the processor. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring current working parameters of the rechargeable battery; if the current working parameters meet a first preset condition, performing a first type of test on the rechargeable battery until the first type of test is completed; acquiring working parameters of the rechargeable battery after the first-class test is finished; and if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished.
According to the computer equipment, due to the fact that the charging and discharging test method of the rechargeable battery is achieved, the service life of the rechargeable battery can be prevented from being reduced, and the test safety is improved.
In one embodiment, the operating parameters include adjusting the total capacity, the voltage of each cell in the rechargeable battery, and the temperature of the plurality of cells. The processor, when executing the computer program, further performs the steps of: acquiring the current voltage of each single battery cell, the current temperature of the plurality of single battery cells and the current total current of the rechargeable battery at preset intervals; and calculating the current adjustment total capacity according to the current total current, the previous total current and the previous adjustment total capacity.
In one embodiment, the processor, when executing the computer program, further performs the steps of: calculating the sum of the current total current and the previous total current; calculating to obtain a capacity increase value according to the sum value and a preset interval; and calculating the sum value of the previous adjusted total capacity and the capacity increasing value to obtain the current adjusted total capacity.
In one embodiment, the processor, when executing the computer program, further performs the steps of: sending a starting instruction of the first type of test to a charging and discharging circuit; acquiring working parameters of the rechargeable battery in the discharging/charging process; judging whether the working parameters in the discharging/charging process meet a first preset condition or not; and if so, re-sending a starting instruction of the first type of test to the charging and discharging circuit, otherwise, sending a stopping instruction of the first type of test to the charging and discharging circuit.
In one embodiment, the first type of test is a discharge test and the second type of test is a charge test. The processor, when executing the computer program, further performs the steps of: carrying out a first type test on the rechargeable battery until the first type test is finished, and judging whether a preset circulation condition is met or not according to working parameters in the discharging process; if so, acquiring working parameters of the rechargeable battery after the first-class test is finished; and carrying out a second type of test on the rechargeable battery until the second type of test is completed, waiting for a preset standing time, and reacquiring the current working parameters of the rechargeable battery.
In one embodiment, the operating parameter includes adjusting the total capacity. The processor, when executing the computer program, further performs the steps of: recording the cycle times, and calculating the health degree of the rechargeable battery according to the total adjustment capacity and the preset rated capacity in the discharging process; if the health degree is greater than or equal to a preset value, judging whether the cycle number reaches a preset number; and if the cycle times do not reach the preset times, the working parameters in the discharging process meet the cycle conditions.
In one embodiment, the processor, when executing the computer program, further performs the steps of: sending a starting instruction of the second type of test to the charging and discharging circuit; acquiring working parameters of the rechargeable battery in the charging/discharging process; judging whether the working parameters in the charging/discharging process meet a second preset condition or not; if so, returning to resend the starting instruction of the second type of test to the charging and discharging circuit, otherwise, sending the stopping instruction of the second type of test to the charging and discharging circuit.
The specific limitations of the steps implemented when the processor executes the computer program may be referred to the limitations of the charging and discharging test method for the rechargeable battery, and are not described herein again.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring current working parameters of the rechargeable battery; if the current working parameters meet a first preset condition, performing a first type of test on the rechargeable battery until the first type of test is completed; acquiring working parameters of the rechargeable battery after the first-class test is finished; and if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished.
The computer readable storage medium realizes the charging and discharging test method of the rechargeable battery, and similarly, the service life of the rechargeable battery can be prevented from being reduced, and the test safety can be improved.
In one embodiment, the operating parameters include adjusting the total capacity, the voltage of each cell in the rechargeable battery, and the temperature of the plurality of cells. The computer program when executed by the processor further realizes the steps of: acquiring the current voltage of each single battery cell, the current temperature of the plurality of single battery cells and the current total current of the rechargeable battery at preset intervals; and calculating the current adjustment total capacity according to the current total current, the previous total current and the previous adjustment total capacity.
In one embodiment, the computer program when executed by the processor further performs the steps of: calculating the sum of the current total current and the previous total current; calculating to obtain a capacity increase value according to the sum value and a preset interval; and calculating the sum value of the previous adjusted total capacity and the capacity increasing value to obtain the current adjusted total capacity.
In one embodiment, the computer program when executed by the processor further performs the steps of: sending a starting instruction of the first type of test to a charging and discharging circuit; acquiring working parameters of the rechargeable battery in the discharging/charging process; judging whether the working parameters in the discharging/charging process meet a first preset condition or not; and if so, re-sending a starting instruction of the first type of test to the charging and discharging circuit, otherwise, sending a stopping instruction of the first type of test to the charging and discharging circuit.
In one embodiment, the first type of test is a discharge test and the second type of test is a charge test. The computer program when executed by the processor further realizes the steps of: carrying out a first type test on the rechargeable battery until the first type test is finished, and judging whether a preset circulation condition is met or not according to working parameters in the discharging process; if so, acquiring working parameters of the rechargeable battery after the first-class test is finished; and carrying out a second type of test on the rechargeable battery until the second type of test is completed, waiting for a preset standing time, and reacquiring the current working parameters of the rechargeable battery.
In one embodiment, the operating parameter includes adjusting the total capacity. The computer program when executed by the processor further realizes the steps of: recording the cycle times, and calculating the health degree of the rechargeable battery according to the total adjustment capacity and the preset rated capacity in the discharging process; if the health degree is greater than or equal to a preset value, judging whether the cycle number reaches a preset number; and if the cycle times do not reach the preset times, the working parameters in the discharging process meet the cycle conditions.
In one embodiment, the computer program when executed by the processor further performs the steps of: sending a starting instruction of the second type of test to the charging and discharging circuit; acquiring working parameters of the rechargeable battery in the charging/discharging process; judging whether the working parameters in the charging/discharging process meet a second preset condition or not; if so, returning to resend the starting instruction of the second type of test to the charging and discharging circuit, otherwise, sending the stopping instruction of the second type of test to the charging and discharging circuit.
The specific limitations of the steps implemented by the computer program can be referred to the limitations of the above-mentioned charging and discharging test method for the rechargeable battery, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for testing charging and discharging of a rechargeable battery, the method comprising:
acquiring the current voltage of each single battery cell, the current temperature of a plurality of single battery cells and the current total current of the rechargeable battery at preset intervals;
calculating to obtain the current total adjustment capacity according to the current total current, the previous total current and the previous total adjustment capacity;
acquiring the adjusted total capacity, the voltage of each single battery cell in the rechargeable battery and the temperature of a plurality of single battery cells as current working parameters of the rechargeable battery;
if the current working parameters meet a first preset condition, performing a first type test on the rechargeable battery until the first type test is finished;
acquiring working parameters of the rechargeable battery after the first-class test is finished;
if the working parameters after the first type of test is finished meet a second preset condition, performing a second type of test on the rechargeable battery until the second type of test is finished; the first type of test is a discharge test/charge test, and the second type of test is a charge test/discharge test;
when the first type of test is a discharge test, the first preset condition includes: the difference value of the current voltage between any two monomer battery cells in the rechargeable battery is less than or equal to a preset voltage difference, the collected current temperatures of the plurality of monomer battery cells are less than or equal to a preset temperature, and the current adjusted total capacity of the rechargeable battery is less than a preset low capacity;
when the second type of test is a charging test, the second preset condition includes: the difference value of the current voltage between any two monomer battery cores in the rechargeable battery is smaller than or equal to the preset pressure difference, the collected current temperatures of the plurality of monomer battery cores are smaller than or equal to the preset temperature, and the current adjusted total capacity of the rechargeable battery is smaller than the preset high capacity.
2. The method of claim 1, wherein the adjusted total capacity is a total charged or discharged capacity of the rechargeable battery.
3. The method of claim 2, wherein calculating the current adjusted total capacity based on the current total current, the previous total current, and the previous adjusted total capacity comprises:
calculating the sum of the current total current and the previous total current;
calculating to obtain a capacity increase value according to the sum value and the preset interval;
calculating the sum of the previous adjusted total capacity and the capacity increase value to obtain the current adjusted total capacity.
4. The method of claim 1, wherein the preset low capacity represents a maximum capacity allowed for discharging, and the preset high capacity represents a maximum capacity allowed for charging.
5. The method of claim 1, wherein performing the first type of test on the rechargeable battery until the first type of test is completed comprises:
sending a starting instruction of a first type test to a charging and discharging circuit, wherein the starting instruction of the first type test is used for controlling the charging and discharging circuit to discharge/charge the rechargeable battery;
acquiring working parameters of the rechargeable battery in a discharging/charging process;
if the working parameters in the discharging/charging process meet the first preset condition, returning to the step of sending a starting instruction of the first type test to the charging and discharging circuit;
if the working parameters in the discharging/charging process do not meet the first preset condition, sending a stopping instruction of the first type test to the charging and discharging circuit to complete the first type test; and the stop instruction of the first type of test is used for controlling the charging and discharging circuit to stop discharging/charging the rechargeable battery.
6. The method of claim 5, wherein the first type of test is a discharging test, the second type of test is a charging test, and the performing the first type of test on the rechargeable battery until after the first type of test is completed, and the obtaining the operating parameters of the rechargeable battery before the first type of test is completed further comprises:
judging whether a preset circulating condition is met or not according to working parameters in the discharging process;
if yes, executing the step of obtaining the working parameters of the rechargeable battery after the first type of test is finished;
the second type of test is performed on the rechargeable battery until the second type of test is completed, and the method further includes:
and waiting for a preset standing time, and returning to the step of acquiring the current working parameters of the rechargeable battery.
7. The method of claim 6, wherein the operating parameter comprises adjusting a total capacity, and the determining whether a preset cycling condition is satisfied according to the operating parameter during the discharging process comprises:
recording the cycle times, and calculating the health degree of the rechargeable battery according to the total adjustment capacity and the preset rated capacity in the discharging process;
if the health degree is greater than or equal to a preset value, judging whether the cycle times reach preset times or not;
if not, the working parameters in the discharging process meet the cycle conditions.
8. The method of claim 1, wherein performing the second type of test on the rechargeable battery until the second type of test is completed comprises:
sending a starting instruction of a second type of test to a charging and discharging circuit, wherein the starting instruction of the second type of test is used for controlling the charging and discharging circuit to charge/discharge the rechargeable battery;
acquiring working parameters of the rechargeable battery in the charging/discharging process;
if the working parameters in the charging/discharging process meet the second preset condition, returning to the step of sending a starting instruction of the second type of test to the charging/discharging circuit;
if the working parameters in the charging/discharging process do not meet the second preset condition, sending a stopping instruction of a second type of test to the charging/discharging circuit to complete the second type of test; and the stop instruction of the second type of test is used for controlling the charging and discharging circuit to stop charging/discharging the rechargeable battery.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 8 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.
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| CN111834677B (en) * | 2019-04-18 | 2022-02-22 | 东莞新能德科技有限公司 | Battery management method, battery management device, battery management system and terminal equipment |
| CN110716835B (en) * | 2019-10-14 | 2024-04-02 | 深圳忆联信息***有限公司 | Mobile mark automatic test method, device and computer equipment |
| CN111999652A (en) * | 2020-07-22 | 2020-11-27 | 济南浪潮高新科技投资发展有限公司 | Method, device, equipment and medium for testing and recording charge and discharge of battery |
| CN115097308B (en) * | 2022-05-11 | 2024-06-11 | 阿尔特汽车技术股份有限公司 | Method and device for analyzing SOH state of battery cell, electronic equipment and storage medium |
| CN117706378B (en) * | 2024-02-05 | 2024-05-31 | 常州拜特测控技术有限公司 | Method, system and storage medium for testing charge and discharge performance of flow battery |
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