CN109001633A - Battery pack hierarchical detection method - Google Patents
Battery pack hierarchical detection method Download PDFInfo
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- CN109001633A CN109001633A CN201810539158.4A CN201810539158A CN109001633A CN 109001633 A CN109001633 A CN 109001633A CN 201810539158 A CN201810539158 A CN 201810539158A CN 109001633 A CN109001633 A CN 109001633A
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Abstract
The embodiment of the invention discloses a kind of battery pack hierarchical detection methods, comprising the following steps: S1: detection battery pack performance；S2: being that underproof battery pack is disassembled into multiple battery modules by grade；S3: dismantling obtains the performance of battery modules in detection S2；S4: being that underproof battery modules are disassembled into multiple battery cores by grade；S5: dismantling obtains the performance of battery core in detection S4；S6: dismantling grade is underproof battery core, recycles raw material.Battery pack hierarchical detection method of the invention, not only detect battery pack, the performance of battery modules and battery core is also detected during dismantling, it will wherein qualification or recoverable battery modules and battery core pick out, so that in the process of dismantling process final step dismantling battery core, the battery core performance being disassembled be it is unqualified, avoid qualified and recoverable battery core and also accidentally torn open, alleviate the workload of last dismantling battery core recycling raw material.
Description
Technical field
The present invention relates to battery disassembling method technical field more particularly to a kind of battery pack hierarchical detection methods.
Background technique
With the fast development of new-energy automobile, more and more environmental issues gradually appear, wherein more outstanding be
Power battery in automobile how to handle the problem of, the main method taken now is for power battery recycling and reusing.
The mode of common recycling and reusing is the power battery dismantling for having declined performance, recycles one of the various originals
Material.It is general in existing recovery process that a performance detection is only carried out before disassembling battery pack, it according to testing result will be electric
That Chi Bao is divided into is qualified, can repair and unqualified three grades.The battery pack of qualified grade is directly recycled；For that can repair
The battery pack of grade is repaired to performance and reaches criterion of acceptability recycling；The battery pack of unqualified grade is directly disassembled
Recycle wherein all kinds of raw material.
It include multiple battery modules in battery pack, each battery modules include multiple battery cores.For the electricity of unqualified grade
Chi Bao, although its overall performance, which has descended to, does not conform to ruling hereinafter, being not meant to each battery mould in the battery pack
Group, the performance of each battery core, which has descended to, does not conform to ruling or less.In fact, also containing in the battery pack of unqualified registration
There are a large amount of grades for qualified or recoverable battery modules and battery core.In present production technology, these unqualified batteries
Qualified or recoverable battery modules or battery core in packet, which are all directly split, to be taken off, and is increased in finishing operation, dismantling electricity
The workload of core recycling raw material.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of battery pack hierarchical detection method is proposed, solve existing
The performance of the battery modules and battery core in unqualified battery packet is not detected in technology, but is directly all disassembled, causes wherein to close
Lattice or recoverable battery modules and battery core, which are also split, to be taken off, and is increased in finishing operation, the work of dismantling battery core recycling raw material
The technical issues of measuring.
In order to reach above-mentioned technical purpose, the embodiment of the invention provides a kind of battery pack hierarchical detection method, the batteries
Packet hierarchical detection method the following steps are included:
S1: detection battery pack performance, according to testing result by battery pack be divided into it is qualified, can repair and unqualified three etc.
Grade；
S2: directly recycling grade is qualified battery pack, and restorability class is recoverable battery pack until its battery capacity
Reach qualified grade, is that underproof battery pack is disassembled into multiple battery modules by grade；
S3: dismantling obtains the performance of battery modules in detection S2, and battery modules are divided into qualification according to testing result, can be repaired
Multiple and unqualified three grades；
S4: directly recycling grade is qualified battery modules, and restorability class is recoverable battery modules until its battery
Capacity reaches qualified grade, is that underproof battery modules are disassembled into multiple battery cores by grade；
S5: dismantling obtains the performance of battery core in detection S4, according to testing result by battery core be divided into it is qualified, can repair and not
Qualified three grades；
S6: directly recycling grade is qualified battery core, and restorability class is recoverable battery core until its battery capacity reaches
Qualified grade, dismantling grade are underproof battery core, recycle raw material.
Compared with prior art, the invention has the following beneficial effects: battery pack hierarchical detection methods of the invention, not only
Battery pack is detected, the performance of battery modules and battery core is also detected during dismantling, it will wherein qualified or recoverable electricity
Chi Mo group and battery core are picked out, so that the battery core performance being disassembled is equal in the process of dismantling process final step dismantling battery core
Be it is unqualified, avoid qualified and recoverable battery core and also accidentally torn open, alleviate the work of last dismantling battery core recycling raw material
Amount.
Detailed description of the invention
Fig. 1 is the flow chart of battery pack hierarchical detection method provided by the invention；
Fig. 2 is the flow diagram of battery pack dismantling detection provided by the invention；
Fig. 3 is the flow chart of battery performance detection method in Fig. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Referring to Figure 1 and Fig. 2, Fig. 1 be battery pack hierarchical detection method provided by the invention flow chart；Fig. 2 is this hair
The flow diagram of the battery pack dismantling detection of bright offer.
Battery pack includes multiple battery modules, and each battery modules include multiple battery cores.
Battery pack hierarchical detection method the following steps are included:
S1: before disassembling battery pack 1, first detecting the performance of battery pack 1, according to testing result divides battery pack 1 to close
Lattice grade battery pack 11, can restorability class battery pack 12 and unqualified 13 three classes of grade battery pack.
S2: being that qualified battery pack 11 is directly recycled for grade；It is that recoverable battery pack 12 is first for grade
It repairs, until its battery capacity reaches qualified grade, recycling processing；It is that underproof battery pack 13 is disassembled at more for grade
A battery modules.
S3: dismantling obtains the performance of battery modules in detection S2, and battery modules are divided into qualified grade according to testing result
Battery modules 21, can restorability class battery modules 22 and unqualified 23 three classes of grade battery modules.
S4: being that qualified battery modules 21 are directly recycled for grade；It is recoverable battery modules for grade
22 first repair, until its battery capacity reaches qualified grade, recycling processing；It is that underproof battery modules 23 are torn open for grade
Solution is at multiple battery cores.
S5: dismantling obtains the performance of battery core in detection S4, battery core is divided into qualified grade battery core 31 according to testing result, can
Restorability class battery core 32 and unqualified 33 three classes of grade battery core.
S6: being that qualified battery core 31 is directly recycled for grade；It is that recoverable battery core 32 is first repaired for grade,
Until its battery capacity reaches qualified grade, recycling processing；It is the dismantling of underproof battery core 33 for grade, recycles raw material
4。
In step S1, S3 and S5, it can take and measure the method that is averaged repeatedly to reduce accidental error, improve and survey
The accuracy rate of amount.Simultaneously when disassembling some battery pack, battery pack, battery modules should be detected only with a kind of detection method
And the performance of battery core, it avoids because the difference of detection mode causes the difference of testing result.
In step S1, S3 and S5, detection battery pack, battery modules and there are many ways to battery core, in the present invention
In the embodiment of offer, following steps are taken to detect battery pack, battery modules and the performance of battery core.If Fig. 3, Fig. 3 are Fig. 1
The flow chart of middle battery performance detection method.
Q1: in the i-th sampling instant, the voltage U of battery pack is obtainedi, electric current IiAnd temperature Ti, calculate the charged of battery pack
State SOCi, there are many calculation methods of state-of-charge SOC, such as: current integration method, open circuit voltage method or Kalman filtering
Method etc..In the process for disassembling some battery pack, same calculation method should be used.Then according to SOCiWith TiPass through inquiry
SOC-T-OCV relation table obtains the open-circuit voltage OCV of battery packi。
Q2: in i+1 sampling instant, the voltage U of battery pack is obtainedi+1, electric current Ii+1And temperature Ti+1, and using logical kind
The state-of-charge SOC of method calculating battery packi+1, then according to SOCi+1With Ti+1Inquiry SOC-T-OCV relation table obtains battery pack
Open-circuit voltage OCVi+1.And the time interval between i+1 sampling instant and the i-th sampling instant 5 milliseconds to 20 milliseconds it
Between.
Q3: the ohmic internal resistance R of battery pack, calculation formula are calculated are as follows:
R=[(Ui+1-OCVi+1)-(Ui-OCVi)]/(Ii+1-Ii)。
Q4: resulting ohmic internal resistance R is calculated according to Q3, judges the performance of battery pack.
Specifically, the ohmic internal resistance R being calculated is compared with the ohmic internal resistance that power battery manufacturer provides, root
According to numerical difference between the two away from size come judge its performance belong to it is qualified, can repair or unqualified three grades in which etc.
Grade.
The implementation of the embodiments of the present invention has the following beneficial effects: battery pack hierarchical detection method of the invention, is not only detected
Battery pack also detects the performance of battery modules and battery core during dismantling, will wherein qualified or recoverable battery mould
Group and battery core are picked out, so that the battery core performance being disassembled is not in the process of dismantling process final step dismantling battery core
Qualification avoids qualified and recoverable battery core and is also accidentally torn open, alleviates the workload of last dismantling battery core recycling raw material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of battery pack hierarchical detection method, which is characterized in that the battery pack includes multiple battery modules, the battery mould
Group include multiple battery cores, the battery pack hierarchical detection method the following steps are included:
S1: detecting the battery pack performance, according to testing result by the battery pack be divided into it is qualified, can repair and unqualified three
A grade；
S2: directly recycling grade is the qualified battery pack, and restorability class is the recoverable battery pack until its battery
Capacity reaches qualified grade, is the underproof battery pack dismantling into multiple battery modules by grade；
S3: dismantling obtains the performance of the battery modules in detection S2, according to testing result by the battery modules be divided into it is qualified,
It can repair and unqualified three grades；
S4: directly recycling grade is the qualified battery modules, and restorability class is the recoverable battery modules up to it
Battery capacity reaches qualified grade, is the underproof battery modules dismantling into multiple battery cores by grade；
S5: dismantling obtains the performance of the battery core in detection S4, according to testing result by the battery core be divided into it is qualified, can repair with
And unqualified three grades；
S6: directly recycling grade is the qualified battery core, and restorability class is the recoverable battery core until its battery capacity
Reach qualified grade, dismantling grade is the underproof battery core, recycles raw material.
2. battery pack hierarchical detection method according to claim 1, which is characterized in that detect the side of the battery inclusion quantity
The method of method, the method for the detection battery modules and the detection battery core is identical.
3. battery pack hierarchical detection method according to claim 2, which is characterized in that detect the side of the battery inclusion quantity
Method the following steps are included:
Q1: in the i-th sampling instant, the voltage U of the battery pack is obtainedi, electric current IiAnd temperature Ti, calculate the battery pack
State-of-charge SOCi, then according to the SOCiWith the TiObtain the open-circuit voltage OCV of the battery packi；
Q2: in i+1 sampling instant, the voltage U of the battery pack is obtainedi+1, electric current Ii+1And temperature Ti+1, calculate the electricity
The state-of-charge SOC of Chi Baoi+1, then according to the SOCi+1With the Ti+1Obtain the open-circuit voltage OCV of the battery packi+1；
Q3: ohmic internal resistance R, the R=[(U of the battery pack are calculatedi+1-OCVi+1)-(Ui-OCVi)]/(Ii+1-Ii)；
Q4: the resulting ohmic internal resistance R is calculated according to Q3, judges the performance of the battery pack.
4. battery pack hierarchical detection method according to claim 3, which is characterized in that the i+1 sampling instant and institute
The time interval between the i-th sampling instant is stated between 5 milliseconds to 20 milliseconds.
5. battery pack hierarchical detection method according to claim 4, which is characterized in that the state-of-charge SOC is using peace
When integration method, open circuit voltage method or Kalman filtering method be calculated.
6. battery pack hierarchical detection method according to claim 5, which is characterized in that the open-circuit voltage OCV is by looking into
SOC-T-OCV relation table is ask to obtain.
7. battery pack hierarchical detection method according to claim 1, which is characterized in that repeat step S1, S3 and
S5 obtains multiple measurement results, is averaged and judges its performance.
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Cited By (1)
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| CN109856540A (en) * | 2019-02-14 | 2019-06-07 | 江苏慧智能源工程技术创新研究院有限公司 | A kind of recoverying and utilizing method and stage division of retired battery pack |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210531 Address after: 431400 No.9, Bipu village, cangbu street, Xinzhou District, Wuhan City, Hubei Province Applicant after: Green beauty (Wuhan) Power Battery Recycling Co.,Ltd. Applicant after: Green beauty (Wuxi) New Energy Service Co.,Ltd. Applicant after: Grammy Corp. Applicant after: Green beauty (Tianjin) Power Battery Recycling Co.,Ltd. Applicant after: Green beauty (Zhejiang) Power Battery Recycling Co.,Ltd. Applicant after: GEM (TIANJIN) URBAN MINING RECYCLING INDUSTRY DEVELOPMENT Co.,Ltd. Applicant after: Green beauty (Shenzhen) Recycling Technology Co.,Ltd. Address before: 431400 Bi Pu Cun, Ma'an Cun, cangbu Jie, Xinzhou District, Wuhan City, Hubei Province Applicant before: Greenland (Wuhan) city mineral recycling Industrial Park Development Co.,Ltd. Applicant before: GEM (WUXI) ENERGY MATERIAL Co.,Ltd. Applicant before: GEM (TIANJIN) URBAN MINING RECYCLING INDUSTRY DEVELOPMENT Co.,Ltd. Applicant before: JIANGXI GREEN ECO-MANUFACTURE RESOURCE CYCLE Co.,Ltd. Applicant before: Grammy Corp. |
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Application publication date: 20181214 |
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