CN114062954A - Battery pack service life detection charging and discharging system and method - Google Patents
Battery pack service life detection charging and discharging system and method Download PDFInfo
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- CN114062954A CN114062954A CN202111321221.5A CN202111321221A CN114062954A CN 114062954 A CN114062954 A CN 114062954A CN 202111321221 A CN202111321221 A CN 202111321221A CN 114062954 A CN114062954 A CN 114062954A
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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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application relates to the technical field of battery charging and discharging, and discloses a battery pack service life detection charging and discharging system and a method, wherein the system comprises: the battery pack use requirement investigation module is used for acquiring an investigation report about the use requirement of the battery pack; the charging and discharging detection module is used for detecting the actual charging and discharging tolerance temperature and the actual discharging duration of the battery pack; the control module is used for acquiring a first matching degree of actual charge-discharge tolerant temperature and charge-discharge temperature requirements; the device is also used for acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement; and the judging module is used for judging that the result of the battery pack detection is qualified grade if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value based on the first matching degree and the second matching degree. The method and the device have the effect of judging whether the requirements of the users in special environments on the service life of the battery pack are met or not according to the detection result.
Description
Technical Field
The invention relates to the technical field of battery charging and discharging, in particular to a battery pack service life detection charging and discharging system and method.
Background
The battery PACK generally refers to an assembled battery, for example, a lithium battery, generally mainly refers to the processing and assembly of a lithium battery PACK, and is a product which is combined and processed into a product required by a customer through a battery PACK process, such as a battery core, a battery protection board, a battery connecting sheet, label paper, and the like. For the battery, the power source is continuously provided for the electronic product through a charging and discharging mode, the service life of the battery is limited, and the service life of a common lithium battery is about 2-3 years; however, before each type of battery pack is put into use, the charge and discharge performance of the battery pack is detected, and the charge and discharge parameters of the battery pack are known.
At present, when a battery pack is charged and discharged, generally, cycle detection is performed on the service life of a battery, for example, in a normal temperature environment, the number of times of charging the battery is obtained by detecting the number of times of full charge and full discharge each time, and then the service life of the battery is obtained according to the number of times of charging the battery, however, the service environments of each battery are different, and the dependence of different users on the service life of the battery is also different.
In view of the above-mentioned related technologies, the inventor believes that the requirement for the battery is high for some users in special environments, and the performance of the ordinary battery may not meet the use requirement of the users in special environments.
Disclosure of Invention
In order to meet the requirement of a user in a special environment on the service life of a battery pack, the application provides a battery pack service life detection charging and discharging system and method.
In a first aspect, the present application provides a battery pack life detection charging and discharging system, which adopts the following technical scheme:
a battery pack service life detection charging and discharging system comprises a battery pack use demand investigation module, a charging and discharging detection module, a control module and a judgment module; the battery pack use demand investigation module, the charge and discharge detection module and the judgment module are all in communication connection with the control module;
the battery pack use requirement investigation module is used for acquiring an investigation report about the battery pack use requirement, and the investigation report comprises a charge and discharge temperature requirement and a discharge time requirement;
the charge and discharge detection module is used for detecting the actual charge and discharge tolerance temperature and the actual discharge duration of the battery pack;
the control module is used for acquiring a first matching degree of the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement; the charging and discharging time length matching device is also used for acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement;
and the judging module is used for judging that the detection result of the battery pack is qualified grade if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value based on the first matching degree and the second matching degree.
By adopting the technical scheme, before the battery pack is detected, market research needs to be carried out firstly, a research object is a use object in a special environment, for example, the battery pack is in a severe cold environment or a high-temperature environment, the charging and discharging temperature requirement and the discharging time requirement of the battery pack are obtained by obtaining a research report of the research object, then the charging temperature and the discharging time of the battery pack are detected, whether the research requirement of the research object is met or not is judged according to a detection result, whether the battery pack is suitable for use crowds in the special environment or not can be summarized, if the detection result is qualified, the requirement is met, and therefore the requirement of a user in the special environment on the service life of the battery pack can be met.
Optionally, the system further comprises a calculation module,
the calculation module is in communication connection with the battery pack use requirement investigation module,
the charge and discharge temperature distribution range is used for acquiring the charge and discharge temperature demand through a normal distribution function based on the charge and discharge temperature demand;
the device is also used for acquiring the distribution range of the discharge duration demand through a normal distribution function based on the discharge duration demand;
the control module acquires a first matching degree with the discharge temperature distribution range based on the actual charge-discharge tolerance temperature; and the method is also used for acquiring a second matching degree with the distribution range of the discharge duration based on the actual discharge duration of the charge and discharge.
By adopting the technical scheme, after the investigation report is obtained, the investigation report comprises a large amount of data, a calculation module is required to calculate a temperature demand distribution range and a discharge duration distribution range which occupy a large area, a normal distribution function is adopted for calculation, a value range close to a peak position in a normal distribution curve can be used as the temperature demand distribution range and the discharge duration distribution range, and then the detection result of the battery pack is matched with the distribution ranges, so that a first matching degree and a second matching degree are respectively obtained; the temperature demand distribution range and the charging time distribution range are obtained by utilizing the normal distribution function, and the accuracy can be improved.
Optionally, the investigation report further includes a charging duration requirement,
the charge and discharge detection module is also used for detecting the actual charging time of the battery pack;
the control module is further used for acquiring a third matching degree between the actual charging time and the charging time requirement;
the judging module is further configured to determine that the result of the battery pack detection is an excellent grade if the third matching degree reaches a third matching degree preset value based on the third matching degree.
By adopting the technical scheme, after the discharge time and the tolerance value of the charge-discharge temperature are detected, the standby time of the electric energy of the battery pack for one time and the tolerance high-temperature value and the tolerance low-temperature value of the battery pack can be roughly determined, then the charge time can be detected, how long time is spent when the battery pack is completely fully charged is detected, and then the charge time is matched with the charge time required by a research object to analyze whether the charge time can meet the charge requirement of the research object, if so, the detection grade of the battery pack is excellent grade, and the use requirement of the research object can be completely met; the detection process of the battery pack is detected in a grading mode, so that the battery pack detection method is suitable for investigation objects with different use requirements.
Optionally, the charge and discharge detection module is further configured to detect a complete charge and discharge frequency of the battery pack;
the judging module is also used for judging whether the complete charging and discharging times reach a preset time threshold value; if the complete charging and discharging times reach the preset time threshold, the detection result of the battery pack is in a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in an unqualified grade.
By adopting the technical scheme, when the battery pack is subjected to charge and discharge detection, the number of times of complete charge and discharge through detection of the battery pack is an important standard for detecting the service life of the battery pack, and when the number of times of complete charge and discharge does not reach a preset number threshold, the service life of the battery pack is short, the battery pack does not meet the requirement of the service life, belongs to an unqualified grade and needs to be eliminated. The service life of the battery pack is detected from the aspect of the charging and discharging times, and the versatility of service life detection of the battery pack can be enhanced.
Optionally, the system further comprises a terminal device,
the control module is also used for generating a detection result playing instruction to the terminal equipment based on the detection result of the battery pack;
and the terminal equipment is in communication connection with the control module and is used for receiving the detection result playing instruction and playing the detection result information on an interface.
Through adopting above-mentioned technical scheme, through terminal equipment, can show the testing result of battery package, then according to the testing result, make things convenient for the staff to observe and record.
Optionally, the terminal device is further configured to play a battery pack improvement suggestion on the interface when the result of the battery pack detection is an unqualified level, where the battery pack improvement suggestion respectively aims at suggestion contents that the charging duration is unqualified, the discharging duration is unqualified, the tolerant temperature is unqualified, and the number of charging and discharging times is unqualified.
By adopting the technical scheme, when the detection result of the battery pack is unqualified, the reason of the unqualified battery pack and the corresponding improvement suggestion are displayed on the terminal equipment immediately, so that the battery pack unqualified products can be conveniently repaired and improved according to the improvement suggestion when the battery pack unqualified products are processed in the later period, and the efficiency of processing the battery pack unqualified products in the later period can be effectively improved.
In a second aspect, the present application provides a method for detecting charging and discharging of a battery pack, which adopts the following technical scheme:
a battery pack life detection charging and discharging method is applied to the battery pack life detection charging and discharging system and comprises the following steps:
acquiring a research report about the use requirement of the battery pack, wherein the research report comprises a charge and discharge temperature requirement, a discharge time requirement and a charge time requirement;
acquiring actual charging and discharging tolerance temperature and actual discharging time of the battery pack;
based on the actual charging and discharging tolerance temperature and the actual discharging time of the battery pack;
acquiring a first matching degree of the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement; acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement;
if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value, the result of the battery pack detection is a qualified grade; otherwise, the detection result of the battery pack is in a non-qualified grade.
By adopting the technical scheme, before the battery pack is detected, market research needs to be carried out firstly, a research object is a use object in a special environment, for example, the battery pack is in a severe cold environment or a high-temperature environment, the charging and discharging temperature requirement and the discharging time requirement of the battery pack are obtained by obtaining a research report of the research object, then the charging temperature and the discharging time of the battery pack are detected, whether the research requirement of the research object is met or not is judged according to a detection result, whether the battery pack is suitable for use crowds in the special environment or not can be summarized, if the detection result is qualified, the requirement is met, and therefore the requirement of a user in the special environment on the service life of the battery pack can be met.
Optionally, the first matching degree between the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement is obtained; the step of obtaining a second matching degree of the actual charging and discharging time length and the discharging time length requirement comprises the following steps:
based on the charge-discharge temperature requirement and the discharge time period requirement;
respectively acquiring a charging and discharging temperature distribution range of the charging and discharging temperature requirement and a discharging time distribution range of the discharging time requirement through a normal distribution function;
acquiring a first matching degree with the discharge temperature distribution range based on the actual charge-discharge tolerance temperature; and acquiring a second matching degree with the distribution range of the discharge duration based on the actual discharge duration of the charge and discharge.
By adopting the technical scheme, after the investigation report is obtained, the investigation report comprises a large amount of data, a calculation module is required to calculate a temperature demand distribution range and a discharge duration distribution range which occupy a large area, a normal distribution function is adopted for calculation, a value range close to a peak position in a normal distribution curve can be used as the temperature demand distribution range and the discharge duration distribution range, and then the detection result of the battery pack is matched with the distribution ranges, so that a first matching degree and a second matching degree are respectively obtained; the temperature demand distribution range and the charging time distribution range are obtained by utilizing the normal distribution function, and the accuracy can be improved.
Optionally, after the step of detecting that the result of the battery pack is a qualified level, the method includes:
acquiring the actual charging time of the battery pack;
acquiring a third matching degree of the actual charging time length and the charging time length demand based on the actual charging time length;
based on the third matching degree, if the third matching degree reaches a third matching degree preset value, the result of the battery pack detection is an excellent grade;
and if the third matching degree does not reach the third matching degree preset value, the result of the battery pack detection is still in a qualified grade.
By adopting the technical scheme, after the discharge time and the tolerance value of the charge-discharge temperature are detected, the standby time of the electric energy of the battery pack for one time and the tolerance high-temperature value and the tolerance low-temperature value of the battery pack can be roughly determined, then the charge time can be detected, how long time is spent when the battery pack is completely fully charged is detected, and then the charge time is matched with the charge time required by a research object to analyze whether the charge time can meet the charge requirement of the research object, if so, the detection grade of the battery pack is excellent grade, and the use requirement of the research object can be completely met; the detection process of the battery pack is detected in a grading mode, so that the battery pack detection method is suitable for investigation objects with different use requirements.
Optionally, acquiring the complete charging and discharging times of the battery pack;
judging whether the complete charging and discharging times reach a preset time threshold value or not;
if the complete charging and discharging times reach the preset time threshold, the detection result of the battery pack is in a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in an unqualified grade.
By adopting the technical scheme, when the battery pack is subjected to charge and discharge detection, the number of times of complete charge and discharge through detection of the battery pack is an important standard for detecting the service life of the battery pack, and when the number of times of complete charge and discharge does not reach a preset number threshold, the service life of the battery pack is short, the battery pack does not meet the requirement of the service life, belongs to an unqualified grade and needs to be eliminated. The service life of the battery pack is detected from the aspect of the charging and discharging times, and the versatility of service life detection of the battery pack can be enhanced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. before detecting the battery pack, market investigation needs to be carried out firstly, the investigation object is a use object in a special environment, for example, in a severe cold environment or a high-temperature environment, the investigation report of the investigation object is obtained to obtain the charge-discharge temperature requirement and the discharge duration requirement of the battery pack, then the charge-discharge temperature and the discharge duration of the battery pack are detected, whether the investigation requirement of the investigation object is met or not is judged according to the detection result, whether the battery pack is suitable for a use crowd in the special environment or not can be summarized, and if the detection result is qualified, the requirement is met, so that the requirement of a user in the special environment on the service life of the battery pack can be met;
2. when the battery pack is subjected to charge and discharge detection, the number of times of complete charge and discharge of the battery pack is detected, which is an important standard for detecting the service life of the battery pack, and when the number of times of complete charge and discharge does not reach a preset number threshold, the service life of the battery pack is short, the battery pack does not meet the requirement of the service life, and the battery pack belongs to an unqualified grade and needs to be removed. The service life of the battery pack is detected from the aspect of the charging and discharging times, and the versatility of service life detection of the battery pack can be enhanced.
Drawings
Fig. 1 is a schematic diagram of a hardware architecture of a battery pack life detection charging and discharging system according to an embodiment of the present disclosure.
Fig. 2 is a flowchart of a method for detecting charging and discharging of a battery pack according to an embodiment of the present application.
Description of reference numerals:
1. a battery pack use requirement investigation module; 2. a calculation module; 3. a charge and discharge detection module; 4. a control module; 5. a judgment module; 6. and (4) terminal equipment.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
Referring to fig. 1, the embodiment of the application discloses a battery pack life detection charging and discharging system.
The device comprises a battery pack use demand investigation module 1, a calculation module 2, a charge and discharge detection module 3, a control module 4, a judgment module 5 and a terminal device 6.
The battery pack use demand investigation module 1 is in communication connection with the control module 4, can be set as a questionnaire investigation module, is sent to a user by virtue of some online questionnaire websites to carry out self-filling questionnaire investigation, and can be divided into journal questionnaire investigation, post questionnaire investigation, questionnaire transmission investigation and other types according to different questionnaire transmission modes; the content of the investigation comprises the charging and discharging temperature requirement, the charging duration requirement and the discharging duration requirement on the service life of the battery pack. When the survey data is sent to the survey object, the survey object acquires at least two hundred parts of survey data by filling in a charging and discharging temperature requirement (for example, if the environment temperature of the environment where the user uses is-20 ℃, then-20 ℃ is filled as the charging and discharging temperature requirement), a charging time requirement (for example, if the environment where the user is located belongs to an area where power supply is inconvenient or the charging time is limited, the charging time requirement is only limited to be full of electric quantity within 1h, then the charging time requirement is 1 h), a discharging time requirement (for example, if the user is in an inconvenient charging condition, the standby time requirement is high, for example, if the battery pack is used for field use for 48h, then the discharging time requirement is 48 h).
The calculation module 2 is internally provided with an algorithm and is in communication connection with the battery pack use demand investigation module 1, and the investigation data is calculated through the investigation report collected by the battery pack use demand investigation module 1 and the algorithm of the normal distribution function to form the investigation report. The formula of the normal distribution function is that the density curve of the normal distribution function can be expressed as: let X follow a normal distribution and be noted as X-N (m, s2), where μ is the mean, s is the standard deviation, and X ∈ (— ∞, + ∞).
For example, according to a large amount of data, for the charging and discharging temperature requirements, the distribution of the charging and discharging temperature requirements of users is concentrated at-10 ℃ to 40 ℃, and then the charging and discharging temperature distribution range is-10 ℃ to 40 ℃; for the charging time length requirement, the distribution of the charging time length requirement of the user is concentrated in 1-1.5 h, and the distribution range of the charging time length is 1-1.5 h; for the discharge time period requirement, the distribution of the discharge time period requirement of the user is concentrated in 40-60 h, and the distribution range of the discharge time period is 40-60 h.
The charging and discharging detection module 3 comprises a charging and discharging tester for checking charging and discharging parameters of the battery, is in communication connection with the control module 4, can be used for detecting actual charging and discharging tolerance temperature, actual discharging duration, actual charging duration and complete charging and discharging times, and sends the information of the actual charging and discharging tolerance temperature, the actual discharging duration, the actual charging duration and the complete charging and discharging times to the control module 4.
The control module 4 can be control hardware such as a CPU, a chip and the like, is internally provided with a related program algorithm and can be used for calculating the matching degrees corresponding to the actual charging and discharging tolerance temperature, the actual discharging time, the actual charging time and the complete charging and discharging times.
For the actual charging and discharging tolerance temperature, if the tested actual tolerance temperature is 0-40 ℃, the first matching degree is 80% according to the charging and discharging temperature distribution range of-10-40 ℃; for the actual discharge time, if the tested actual discharge time is 50 hours, and the distribution range is 40-60 hours according to the discharge time, the second matching degree is 100%; for the actual charging time, if the tested actual charging time is 2 hours, and the distribution range is 1-1.5 hours according to the charging time, the third matching degree is 0.
The judging module 5 is in communication connection with the control module 4; and the battery pack detection module is used for judging whether the battery pack detection result is qualified grade or not if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value based on the first matching degree and the second matching degree. And the battery pack detection module is also used for detecting whether the battery pack detection result is an excellent grade or not based on the third matching degree if the third matching degree reaches a third matching degree preset value.
If the first preset matching degree value is 79%, the second preset matching degree value is 100% and the third preset matching degree value is 100%, according to the test result, the actual tolerance temperature and the actual discharging time of the battery pack both meet the requirements, and the actual charging time does not meet the requirements, so that the battery pack belongs to the qualified grade detection result; and if the detected actual charging time is within the charging time distribution range, the third matching degree of the actual charging time is 100%, the requirement is met, and the battery pack belongs to the excellent-grade detection result.
The device is also used for judging whether the complete charging and discharging times reach a preset time threshold value or not; if the complete charging and discharging times reach a preset time threshold value, the detection result of the battery pack is a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in a unqualified grade.
The complete charge and discharge is called complete cycle charge, which means that the battery is charged to less than 10%, then the power supply is plugged, and the battery is charged to more than 90%, and is regarded as complete cycle charge once. If the preset time threshold is 400 times, the detection result of the battery pack is qualified if the detected complete charging and discharging times reach 400 times, otherwise, the battery pack is unqualified.
The terminal device 6, which may be a display with a display function, such as a liquid crystal display, is in communication connection with the control module 4, and is configured to receive a detection result playing instruction sent by the control module 4 and play the detection result information on an interface.
When the battery pack is detected each time, the detection result of the battery pack is played in real time, wherein the detection result comprises the detection level, various detection parameters and the like of the battery pack corresponding to each number; when the battery pack detection result is an unqualified level, a battery pack improvement suggestion is played on an interface, and the battery pack improvement suggestion respectively aims at suggestion contents that the charging time length is unqualified, the discharging time length is unqualified, the tolerant temperature is unqualified and the charging and discharging times are unqualified.
For example, for the case that the charging duration is not qualified, if the charging duration is not qualified, whether the battery pack supports the fast charging mode is considered; if the discharge duration does not meet the requirement, the interior of the battery is recommended to be checked, which is caused by the reasons that the self-discharge is too fast due to serious pole plate vulcanization, serious water loss, short circuit of a single cell and more impurities in the single cell of the battery; if the withstand temperature is not satisfactory, it is recommended to replace the battery pack with a material having a good heat dissipation property.
The implementation principle of the battery pack service life detection charge-discharge system in the embodiment of the application is as follows: before detecting the battery pack, market research needs to be carried out firstly, a research object is a use object in a special environment, for example, the use object is in a severe cold environment or a high-temperature environment, the charging and discharging temperature requirement, the charging duration requirement and the discharging duration requirement of the battery pack are obtained by obtaining a research report of the research object, then the charging temperature, the discharging duration and the charging duration of the battery pack are detected, whether the research requirement of the research object is met or not is judged according to a detection result, whether the battery pack is suitable for use crowds in the special environment or not can be summarized, and if the detection result is qualified, the requirement is met or not represented, so that the requirement of a user in the special environment on the service life of the battery pack can be met. In addition, if the detection result of the charging time length requirement meets the requirement, the detection result is an excellent grade; in addition, the complete charging and discharging times of the battery pack need to be detected, and if the complete charging and discharging times do not reach a time threshold value, the detection result of the battery pack is unqualified; the detection result of the battery pack can be observed by the terminal device 6.
Based on the hardware architecture, the embodiment of the application further discloses a battery pack service life detection charging and discharging method, which comprises the following steps of S100-S400:
step S100: obtaining a research report about the use requirement of the battery pack, wherein the research report comprises a charge and discharge temperature requirement, a discharge time requirement and a charge time requirement.
The battery pack use demand investigation module 1 acquires a large amount of investigation data about the charge and discharge temperature demand, the discharge duration demand and the charge duration demand in a questionnaire investigation manner, and then sends the acquired charge and discharge temperature demand, discharge duration demand and charge duration demand to the control module 4.
After the battery pack use requirement investigation module 1 acquires the charge and discharge temperature requirement, the discharge time requirement and the charge time requirement, the investigation data needs to be expanded in a normal distribution function mode, and then the charge and discharge temperature distribution range, the charge time range and the discharge time range are acquired respectively.
Step S200: and acquiring the actual charging and discharging tolerance temperature, the actual discharging time and the actual charging time of the battery pack.
The charging and discharging detection module 3 is used for detecting the actual charging and discharging tolerance temperature, the actual discharging time length and the actual charging time length of each battery pack, and then sending the information to the control module 4.
Step S300: based on the actual charging and discharging tolerance temperature, the actual discharging time length and the actual charging time length of the battery pack;
acquiring a first matching degree of the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement; acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement; and acquiring a third matching degree of the actual charging time length and the charging time length demand.
The control module 4 obtains a first matching degree, a second matching degree, and a third matching degree by using an algorithm, for example, the first matching degree is 80%, the second matching degree is 100%, and the third matching degree is 0.
Step S400: if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value, the result of the battery pack detection is a qualified grade; otherwise, the detection result of the battery pack is in an unqualified grade;
if the third matching degree reaches a third matching degree preset value, the battery pack detection result is an excellent grade; and if the third matching degree does not reach the third matching degree preset value, the result of the battery pack detection is still in a qualified grade.
In addition, in addition to acquiring the actual charging and discharging tolerance temperature, the actual discharging time and the actual charging time of the battery pack, the battery pack use requirement investigation module 1 also detects the complete charging and discharging times of the battery pack, and comprises the following steps:
acquiring the complete charging and discharging times of the battery pack;
judging whether the complete charging and discharging times reach a preset time threshold value or not;
if the complete charging and discharging times reach the preset time threshold, the detection result of the battery pack is in a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in an unqualified grade.
It should be noted that the number of times of complete charging and discharging is the last relation of the charging and discharging detection of the battery pack, and when the number of times of complete charging and discharging does not reach the threshold number of times (for example, 400 times), it means that the service life of the battery pack does not reach the requirement, and the battery pack is an unqualified battery pack.
Unqualified battery packs are collected in a unified mode, the improvement suggestions of the unqualified battery packs are displayed by the terminal equipment 6, the unqualified battery packs are improved conveniently according to the improvement suggestions, and the processing efficiency of the unqualified battery packs in the later period can be greatly improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a battery package life-span detects charge-discharge system which characterized in that: the device comprises a battery pack use demand investigation module (1), a charge and discharge detection module (3), a control module (4) and a judgment module (5); the battery pack use demand investigation module (1), the charge-discharge detection module (3) and the judgment module (5) are in communication connection with the control module (4);
the battery pack use requirement investigation module (1) is used for acquiring a research report about the battery pack use requirement, and the research report comprises a charge and discharge temperature requirement and a discharge time requirement;
the charge and discharge detection module (3) is used for detecting the actual charge and discharge tolerance temperature and the actual discharge duration of the battery pack;
the control module (4) is used for acquiring a first matching degree of the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement; the charging and discharging time length matching device is also used for acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement;
the judging module (5) is used for judging that the result of the battery pack detection is qualified grade if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value based on the first matching degree and the second matching degree.
2. The battery pack life detection charging and discharging system according to claim 1, wherein: the system further comprises a calculation module (2),
the calculation module (2) is in communication connection with the battery pack use requirement investigation module (1),
the charge and discharge temperature distribution range is used for acquiring the charge and discharge temperature demand through a normal distribution function based on the charge and discharge temperature demand;
the device is also used for acquiring the distribution range of the discharge duration demand through a normal distribution function based on the discharge duration demand;
the control module (4) acquires a first matching degree with the discharge temperature distribution range based on the actual charge-discharge tolerance temperature; and the method is also used for acquiring a second matching degree with the distribution range of the discharge duration based on the actual discharge duration of the charge and discharge.
3. The battery pack life detection charging and discharging system according to claim 1, wherein: the survey report also includes the charge duration requirements,
the charge and discharge detection module (3) is also used for detecting the actual charging time of the battery pack;
the control module (4) is further configured to obtain a third matching degree between the actual charging duration and the charging duration requirement;
the judging module (5) is further configured to determine that the result of the battery pack detection is an excellent grade if the third matching degree reaches a third matching degree preset value based on the third matching degree.
4. The battery pack life detection charging and discharging system according to claim 1, wherein: the charge and discharge detection module (3) is also used for detecting the complete charge and discharge times of the battery pack;
the judging module (5) is further used for judging whether the complete charging and discharging times reach a preset time threshold value; if the complete charging and discharging times reach the preset time threshold, the detection result of the battery pack is in a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in an unqualified grade.
5. The battery pack life detection charging and discharging system according to claim 4, wherein: the system further comprises a terminal device (6),
the control module (4) is further configured to generate a detection result playing instruction to the terminal device (6) based on a battery pack detection result;
and the terminal equipment (6) is in communication connection with the control module (4) and is used for receiving the detection result playing instruction and playing the detection result information on an interface.
6. The battery pack life detection charging and discharging system according to claim 5, wherein: the terminal device (6) is further used for playing a battery pack improvement suggestion on the interface when the battery pack detection result is in an unqualified grade, wherein the battery pack improvement suggestion respectively aims at suggestion contents that the charging time length is unqualified, the discharging time length is unqualified, the tolerant temperature is unqualified and the charging and discharging times are unqualified.
7. A battery pack service life detection charging and discharging method is characterized in that: the battery pack life detection charging and discharging system applied to the battery pack of claims 1-6 comprises:
acquiring a research report about the use requirement of the battery pack, wherein the research report comprises a charge and discharge temperature requirement, a discharge time requirement and a charge time requirement;
acquiring actual charging and discharging tolerance temperature and actual discharging time of the battery pack;
acquiring a first matching degree of the actual charge-discharge tolerance temperature and the charge-discharge temperature requirement based on the actual charge-discharge tolerance temperature and the actual discharge duration of the battery pack; acquiring a second matching degree of the actual charging and discharging time length and the discharging time length requirement;
if the first matching degree reaches a first matching degree preset value and the second matching degree reaches a second matching degree preset value, the result of the battery pack detection is a qualified grade; otherwise, the detection result of the battery pack is in a non-qualified grade.
8. The battery pack life detection charging and discharging method according to claim 7, wherein: acquiring a first matching degree of the actual charge-discharge tolerant temperature and the charge-discharge temperature requirement; the step of obtaining a second matching degree of the actual charging and discharging time length and the discharging time length requirement comprises the following steps:
based on the charge-discharge temperature requirement and the discharge time period requirement;
respectively acquiring a charging and discharging temperature distribution range of the charging and discharging temperature requirement and a discharging time distribution range of the discharging time requirement through a normal distribution function;
acquiring a first matching degree with the discharge temperature distribution range based on the actual charge-discharge tolerance temperature; and acquiring a second matching degree with the distribution range of the discharge duration based on the actual discharge duration of the charge and discharge.
9. The battery pack life detection charging and discharging method according to claim 7, wherein: the method comprises the following steps after the step of detecting that the battery pack is qualified:
acquiring the actual charging time of the battery pack;
acquiring a third matching degree of the actual charging time length and the charging time length demand based on the actual charging time length;
based on the third matching degree, if the third matching degree reaches a third matching degree preset value, the result of the battery pack detection is an excellent grade;
and if the third matching degree does not reach the third matching degree preset value, the result of the battery pack detection is still in a qualified grade.
10. The method for detecting charging and discharging of battery pack life according to any one of claims 7-9, characterized in that:
acquiring the complete charging and discharging times of the battery pack;
judging whether the complete charging and discharging times reach a preset time threshold value or not;
if the complete charging and discharging times reach the preset time threshold, the detection result of the battery pack is in a qualified grade; and if the complete charging and discharging times do not reach the preset time threshold value, the detection result of the battery pack is in an unqualified grade.
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