CN115815151A - New energy automobile battery echelon utilization performance evaluation system - Google Patents
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Abstract
The invention relates to the technical field of new energy automobile battery performance evaluation, and discloses a new energy automobile battery echelon utilization performance evaluation system which comprises a central processing unit, a battery data acquisition unit and a test unit, wherein a signal end of the central processing unit is respectively in network signal connection with a signal end of the battery data acquisition unit and a signal end of the test unit, a signal end of the test unit is in network signal connection with the data interaction unit, a signal end of the data interaction unit is in network signal connection with a battery data storage unit, and a signal end of the battery data storage unit is in network signal connection with the battery evaluation unit; according to the invention, the battery information data of the full life cycle of various batteries is stored and recorded, so that the system can realize quick sorting of batteries used in a gradient manner based on the stored and recorded battery data of the full life cycle, and the sorting efficiency and the sorting effect are improved.
Description
Technical Field
The invention relates to the technical field of new energy automobile battery performance evaluation, in particular to a new energy automobile battery echelon utilization performance evaluation system.
Background
The lithium ion battery is mainly used as a power source of the current new energy electric automobile, and the lithium ion battery used for the new energy electric automobile is generally not suitable for being continuously used after the capacity of the lithium ion battery is reduced to 80% of the rated capacity, which means that the vehicle-mounted mission of the power battery is ended.
With the rapid development of the automobile industry, the development prospect of recycling power batteries is increasingly prominent, and extensive research on the use of waste lithium batteries is developed worldwide. At present, most of waste lithium batteries cover the energy storage field, and lithium batteries are used in the small and medium energy storage fields, such as the fields of household energy storage, micro-grids, distributed power generation and the like, and have huge development potential. Therefore, if the power battery is directly scrapped, the waste of resources is caused, the power battery still has higher use value for the utilization of stored energy with low energy requirement, and the power battery can be utilized in a gradient manner in order to fully utilize the value of the power battery. In order to realize the echelon utilization of the power battery, the performance of the power battery needs to be evaluated and the battery needs to be sorted.
However, the types, models and manufacturers of the power batteries in the existing market are different, so that the management and safety control of the power batteries are inconvenient, the performance of the power batteries is difficult to accurately and effectively evaluate, and the sorting efficiency of the power batteries is low.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a new energy automobile battery echelon utilization performance evaluation system.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a new energy automobile battery echelon utilization performance evaluation system, includes central processing unit, battery data acquisition unit and test unit, central processing unit's signal end respectively with battery data acquisition unit's signal end and test unit's signal end network signal connection, test unit's signal end network signal connection has the data interaction unit, the signal end network signal connection of data interaction unit has battery data storage unit, battery data storage unit's signal end network signal connection has battery evaluation unit, battery evaluation unit's signal end network signal connection has the screening unit.
Preferably, the test unit comprises a battery internal resistance test module and a battery capacity test module.
Preferably, the battery data acquisition unit is used for acquiring battery information in the whole life cycle of the battery and transmitting the acquired information to the central processing unit, and the central processing unit transmits the information to the test unit to test the battery.
Preferably, the data interaction unit is configured to transmit the tested battery information to the battery data storage unit, the battery evaluation unit is configured to analyze the battery state according to the battery information in the battery data storage unit, and the screening unit sorts the batteries according to the evaluation information in the battery evaluation unit.
Preferably, the battery information includes battery factory information, battery actual use information, and battery retirement information.
Preferably, the battery data acquisition unit is further configured to identify each acquired battery, acquire a battery number, and correspond the acquired battery information to the battery numbers one to one, and the battery data storage unit is further configured to establish a battery information database of each battery in the entire life cycle of the battery according to the number and the battery information of each battery.
Preferably, the number includes a character string, a two-dimensional code, or a barcode.
Preferably, the screening unit can screen out single batteries with rated capacity lower than 50%, reject single batteries with capacity lower than 10% of average capacity, reject single batteries with internal resistance higher than 50% of average internal resistance, and reject single batteries with self-discharge rate higher than a threshold value; screening out single batteries with rated capacity lower than 50%: for the cycle life of the single battery, when the rated capacity of the retired battery is less than 50%, the requirement of continuous use on a power battery automobile is not met, and the battery needs to be screened out; rejecting the single batteries with the capacity lower than 10% of the average capacity: for the batteries, the batteries with the battery capacity lower than 10% of the average capacity are rejected based on the statistical distribution rule of the battery capacity and according to the characteristic of normal distribution in the using process; removing the single batteries with internal resistance more than 50% of average internal resistance: in the working process of the battery, the internal resistance threshold is set to a certain extent according to the temperature condition and the power supply requirement, so that the single batteries with the internal resistance greater than 50% of the average internal resistance need to be removed, and the internal resistance threshold is set according to the heating condition of the battery and the specific power supply requirement for the batteries meeting the capacity requirement, except the batteries with the internal resistance greater than 50% of the average internal resistance; and (3) removing the single battery with the self-discharge rate larger than a threshold value: because the battery needs to satisfy a certain self-discharge threshold in addition to the capacity and the internal resistance of the battery, the single batteries with the self-discharge rate larger than the threshold need to be rejected. After the screening of the single batteries with the rated capacity lower than 50 percent is completed, the batteries with the capacity lower than the average capacity by 10 percent, the internal resistance higher than the average internal resistance by 50 percent and the self-discharge rate higher than a threshold value are rejected, the recombined batteries which meet the conditions and are used in a cascade mode can be obtained.
Preferably, the battery capacity testing module can estimate the residual capacity of the retired power battery according to the voltage change of the retired power battery in the charging and discharging process within 6-12 min; the battery internal resistance testing module can evaluate the alternating current internal resistance and the direct current internal resistance of the retired power battery and judge whether the retired power battery can be used in a gradient manner according to an evaluation result.
Preferably, the battery factory information includes factory information and battery factory parameters, the actual use information includes actual operation parameters and battery position information of the battery, and the decommissioning information includes performance parameters, performance evaluation information and battery fault maintenance records when the battery is decommissioned.
(III) advantageous effects
Compared with the prior art, the invention provides a new energy automobile battery echelon utilization performance evaluation system, which has the following beneficial effects:
1. this new energy automobile battery echelon utilization performance evaluation system stores the record through the battery information data to the full life cycle of various batteries to make the system can realize the quick sorting of echelon utilization battery based on the full life cycle's of storage record battery data, improve sorting efficiency and sorting effect.
2. According to the new energy automobile battery echelon utilization performance evaluation system, the capacity, internal resistance, safety and other performances of the retired power battery are evaluated, and the retired power battery can be judged to be utilized in echelon according to an evaluation result.
3. According to the new energy automobile battery echelon utilization performance evaluation system, evaluation of the retired power battery is mastered in a short time, evaluation cost of the retired power battery is saved, the process cost of retired power battery echelon utilization is reduced, and meanwhile data support can be provided for sorting, recombination, system integration, operation and maintenance and the like of the retired power battery.
4. According to the new energy automobile battery echelon utilization performance evaluation system, the battery matching can be completed according to different grades of battery capacity values by arranging the screening unit, and finally the recombined battery for cascade utilization is formed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a system block diagram of a new energy automobile battery echelon utilization performance evaluation system according to the invention;
fig. 2 is a block diagram of a test unit structure of a new energy automobile battery echelon utilization performance evaluation system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, the present invention provides a technical solution: a new energy automobile battery echelon utilization performance evaluation system comprises a central processing unit, a battery data acquisition unit and a test unit, wherein a signal end of the central processing unit is respectively in network signal connection with a signal end of the battery data acquisition unit and a signal end of the test unit, the test unit comprises a battery internal resistance test module and a battery capacity test module, and the battery capacity test module can estimate the residual capacity of a retired power battery according to the voltage change of the retired power battery in the charging and discharging process within 6-12 min; the battery internal resistance testing module can evaluate the alternating current internal resistance and the direct current internal resistance of the retired power battery and judge whether the retired power battery can be utilized in a gradient manner according to an evaluation result, a signal end network signal of the testing unit is connected with a data interaction unit, a signal end network signal of the data interaction unit is connected with a battery data storage unit, a signal end network signal of the battery data storage unit is connected with a battery evaluation unit, a signal end network signal of the battery evaluation unit is connected with a screening unit, and the screening unit can screen out single batteries with rated capacity lower than 50%, single batteries with capacity lower than 10% of the average capacity, single batteries with internal resistance higher than 50% of the average internal resistance and single batteries with self-discharge performance rate higher than a threshold value; screening out single batteries with rated capacity lower than 50%: for the cycle life of the single battery, when the rated capacity of the retired battery is less than 50%, the requirement of continuous use on a power battery automobile is not met, and the battery needs to be screened out; rejecting the single batteries with the capacity lower than 10% of the average capacity: for the batteries, the batteries with the battery capacity lower than 10% of the average capacity are rejected based on the statistical distribution rule of the battery capacity and according to the characteristic of normal distribution in the using process; removing the single batteries with internal resistance more than 50% of average internal resistance: in the working process of the battery, the temperature condition and the power supply requirement set certain internal resistance threshold values, so that the single batteries with internal resistance greater than 50% of the average internal resistance need to be rejected, and for the batteries meeting the capacity requirement, the internal resistance threshold values are set according to the heating condition of the batteries and the specific power supply requirement, except for the batteries with internal resistance greater than 50% of the average internal resistance; and (3) removing the single battery with the self-discharge rate larger than a threshold value: because the battery needs to satisfy a certain self-discharge threshold in addition to the capacity and the internal resistance of the battery, the single batteries with the self-discharge rate larger than the threshold need to be rejected. After screening out single batteries with rated capacity lower than 50%, eliminating batteries with capacity lower than average capacity 10%, internal resistance higher than average internal resistance 50% and self-discharge rate higher than threshold value, obtaining cascade-utilized recombined batteries meeting the conditions, a battery data acquisition unit for acquiring battery information in the whole life cycle of the batteries and transmitting the acquired information to a central processing unit, the central processing unit transmitting the information to a test unit to test the batteries, a data interaction unit for transmitting the tested battery information to a battery data storage unit, a battery evaluation unit for analyzing the battery state according to the battery information in the battery data storage unit, a screening unit for sorting the batteries according to the evaluation information in the battery evaluation unit, wherein the battery information comprises battery delivery information, actual battery use information and battery decommissioning information, the battery delivery information comprises manufacturer information and battery delivery parameters, the actual battery use information comprises actual battery operation parameters and battery position information, the battery decommissioning information comprises performance parameters, performance evaluation information and battery fault maintenance records when the batteries are retired, the battery data acquisition unit is further used for identifying each acquired battery, and acquiring the battery serial number corresponding to the battery serial number of each battery, and the serial number of each battery in the battery, and the serial number of each battery, and the corresponding battery in the battery database, and the serial number of each battery, and the corresponding battery.
When the battery sorting system is used, the battery information data of the full life cycle of various batteries are stored and recorded, so that the system can realize quick sorting of batteries used in a gradient manner based on the stored and recorded battery data of the full life cycle, and the sorting efficiency and the sorting effect are improved; evaluating the capacity, internal resistance, safety and other performances of the retired power battery, and judging which retired power batteries can be used in a gradient manner according to an evaluation result; by finishing the mastery of the performance evaluation of the retired power battery in a short time, the evaluation cost of the retired power battery is saved, the process cost of echelon utilization of the retired power battery is reduced, and meanwhile, data support can be provided for sorting, recombination, system integration, operation and maintenance and the like of the retired power battery; the screening unit is arranged, so that battery grouping can be completed according to different grades of battery capacity values, and finally a recombined battery with cascade utilization is formed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. The utility model provides a new energy automobile battery echelon utilization performance evaluation system, includes central processing unit, battery data acquisition unit and test unit, its characterized in that: the signal end of the central processing unit is respectively connected with the signal end of the battery data acquisition unit and the signal end of the test unit through network signals, the signal end of the test unit is connected with the data interaction unit through network signals, the signal end of the data interaction unit is connected with the battery data storage unit through network signals, the signal end of the battery data storage unit is connected with the battery evaluation unit through network signals, and the signal end of the battery evaluation unit is connected with the screening unit through network signals.
2. The new energy automobile battery echelon utilization performance evaluation system according to claim 1, characterized in that: the testing unit comprises a battery internal resistance testing module and a battery capacity testing module.
3. The new energy automobile battery echelon utilization performance evaluation system according to claim 1, characterized in that: the battery data acquisition unit is used for acquiring battery information in the whole life cycle of the battery and transmitting the acquired information to the central processing unit, and the central processing unit transmits the information to the test unit to test the battery.
4. The new energy automobile battery echelon utilization performance evaluation system according to claim 1, characterized in that: the data interaction unit is used for transmitting the tested battery information to the battery data storage unit, the battery evaluation unit is used for analyzing the battery state according to the battery information in the battery data storage unit, and the screening unit sorts the batteries according to the evaluation information in the battery evaluation unit.
5. The new energy automobile battery echelon utilization performance evaluation system as claimed in claim 3, characterized in that: the battery information comprises battery factory information, battery actual use information and battery retirement information.
6. The new energy automobile battery echelon utilization performance evaluation system as claimed in claim 3, characterized in that: the battery data acquisition unit is further used for identifying each acquired battery, acquiring a battery number, and corresponding the acquired battery information to the battery number one by one, and the battery data storage unit is further used for establishing a battery information database of each battery in the whole life cycle of the battery according to the number and the battery information of each battery.
7. The new energy automobile battery echelon utilization performance evaluation system according to claim 6, characterized in that: the number includes a character string, a two-dimensional code, or a barcode.
8. The new energy automobile battery echelon utilization performance evaluation system according to claim 1, characterized in that: the screening unit can screen out single batteries with rated capacity lower than 50%, reject single batteries with capacity lower than 10% of average capacity, reject single batteries with internal resistance higher than 50% of average internal resistance, and reject single batteries with self-discharge rate higher than a threshold value.
9. The new energy automobile battery echelon utilization performance evaluation system as claimed in claim 2, characterized in that: the battery capacity testing module can estimate the residual capacity of the retired power battery according to the voltage change of the retired power battery in the charging and discharging process within 6-12 min; the battery internal resistance testing module can evaluate the alternating current internal resistance and the direct current internal resistance of the retired power battery and judge whether the retired power battery can be used in a gradient manner or not according to an evaluation result.
10. The new energy automobile battery echelon utilization performance evaluation system as claimed in claim 5, characterized in that: the battery delivery information comprises delivery manufacturer information and battery delivery parameters, the battery actual use information comprises battery actual operation parameters and battery position information, and the battery decommissioning information comprises performance parameters, performance evaluation information and battery fault maintenance records when the battery is decommissioned.
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| CN116295449A (en) * | 2023-05-25 | 2023-06-23 | 吉林大学 | Method and device for indicating path of autonomous underwater vehicle |
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