CN115356645B - Compression roller detection method and device, electronic equipment and storage medium - Google Patents
Compression roller detection method and device, electronic equipment and storage medium Download PDFInfo
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- CN115356645B CN115356645B CN202211283626.9A CN202211283626A CN115356645B CN 115356645 B CN115356645 B CN 115356645B CN 202211283626 A CN202211283626 A CN 202211283626A CN 115356645 B CN115356645 B CN 115356645B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/3865—Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
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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 invention discloses a method and a device for detecting a compression roller, electronic equipment and a storage medium, wherein the method comprises the following steps: performing preset charge and discharge tests on at least one battery to be detected; the battery to be detected is obtained by performing a rolling procedure on a pressing roller to be detected; when the test end condition is met, determining the condition of the convex points on the outer surface of the battery to be detected; and determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface. Through the technical scheme of the embodiment of the invention, the correlation between the battery abnormality and the roller abnormality is accurately distinguished, and the effect of determining the roller abnormality in the rolling process is achieved.
Description
Technical Field
The invention relates to the technical field of battery preparation, in particular to a compression roller detection method and device, electronic equipment and a storage medium.
Background
Lithium ion batteries have been widely used in production and life because of their advantages of high energy density, long cycle life, wide temperature range, no memory effect, etc.
Safety problems of the lithium ion battery may be related to manufacturing processes, such as short circuit in the lithium ion battery caused by non-standard manufacturing and production processes, uneven dressing of a pole piece caused in the manufacturing process, uneven compaction, introduction of impurity particles and the like, which all cause failure and safety problems of the lithium ion battery to different degrees.
Because the aluminum-plastic film layer of the lithium ion battery is thin, the common problem is the abnormal point of the surface bulge of the aluminum-plastic film. The raised points not only affect the appearance, but also have obvious potential safety hazards. In the production process of the lithium ion battery, the cells of the lithium ion battery should be screened, and the phenomenon is preferably avoided as much as possible in the manufacturing process.
Disclosure of Invention
The invention provides a method and a device for detecting a press roller, electronic equipment and a storage medium, which are used for accurately distinguishing the relevance between battery abnormality and press roller abnormality and determining the effect of abnormal condition of the press roller in a rolling process.
According to an aspect of the present invention, there is provided a roll inspection method including:
performing preset charge and discharge tests on at least one battery to be detected; the battery to be detected is obtained by performing a rolling procedure on a pressing roller to be detected;
when the test end condition is met, determining the condition of the convex points on the outer surface of the battery to be detected;
and determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface.
According to another aspect of the present invention, there is provided a roll detecting apparatus including:
the testing module is used for carrying out preset charging and discharging tests on at least one battery to be detected; the battery to be detected is obtained by performing a rolling procedure through a pressing roller to be detected;
the protruding point determining module is used for determining the protruding point condition of the outer surface of the battery to be detected when the test ending condition is met;
and the result determining module is used for determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the nip roll detection method according to any of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the roll detection method according to any one of the embodiments of the present invention when executed.
According to the technical scheme of the embodiment of the invention, at least one battery to be detected is subjected to the preset charge and discharge test, when the test ending condition is met, the condition of the convex point on the outer surface of the battery to be detected is determined, and the detection result of the compression roller to be detected is determined according to the condition of the convex point on the outer surface, so that the problem of abnormal convex of the battery caused by the abnormal compression roller in the battery manufacturing process is solved, the relevance between the battery abnormality and the abnormal compression roller is accurately distinguished, and the effect of determining the abnormal compression roller condition in the rolling process is achieved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for inspecting a platen according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for inspecting a platen according to a second embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for inspecting a platen according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a pressing roller detection device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be appreciated that the data involved in the subject technology, including but not limited to the data itself, the acquisition or use of the data, should comply with the requirements of the corresponding laws and regulations and related regulations.
Example one
Fig. 1 is a schematic flow chart of a method for detecting a pressing roller according to an embodiment of the present invention, where the embodiment is applicable to detecting an influence on a battery due to an abnormal pressing roller in a battery manufacturing process, and the method may be implemented by a pressing roller detecting device, where the pressing roller detecting device may be implemented in a form of hardware and/or software, and the pressing roller detecting device may be configured in an electronic device.
As shown in fig. 1, the method includes:
and S110, performing preset charge and discharge tests on at least one battery to be detected.
The battery to be detected is obtained by performing a rolling procedure on the pressing roller to be detected and is used for testing the pressing roller to be detected. The press roll to be detected may be a press roll used in a rolling process. The charge and discharge test may include performing a charge test and a discharge test on the battery to be tested.
Specifically, at least one battery to be detected is obtained by performing a rolling process on a pressing roller to be detected. And performing multi-round preset charging and discharging tests on the batteries to be detected so as to simulate the use functions of the batteries to be detected, and facilitating observation of abnormal conditions of each battery to be detected in the cyclic charging and discharging test process.
And S120, when the test ending condition is met, determining the condition of the convex points on the outer surface of the battery to be detected.
The test end condition may be a condition for stopping performing the charge and discharge test on the battery to be detected, for example: the number of tests can reach a preset number or the outer surface of the battery to be detected has abnormal conditions. The outer surface projection point condition can be used for describing abnormal projections generated in the charge and discharge test of the battery to be detected. The outer surface convex point condition may include whether or not there is a convex point, and if there is a convex point, the outer surface convex point condition may further include the number and position of the convex points.
Specifically, in the process of performing a charge and discharge test on the battery to be detected, whether a test end condition is met is judged. If so, stopping performing a preset charge-discharge test on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected. If not, the preset charge and discharge test is continuously carried out on the battery to be detected.
Optionally, whether the test ending condition is met may be judged by the following two judgment ways, specifically:
and judging whether the outer surface of the battery to be detected has the convex points, if so, stopping performing a preset charge-discharge test on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected, otherwise, continuing to perform the preset charge-discharge test on the battery to be detected.
The convex points can be independent convex points on the aluminum plastic film on the outer surface of the battery to be detected.
Specifically, whether the convex points exist on the outer surface of the battery to be detected is judged. If the battery to be detected exists, the battery to be detected is abnormal, under the condition, the preset charging and discharging test of the battery to be detected can be stopped, and the condition of the convex points on the outer surface of the battery to be detected is determined, so that the compression roller to be detected can be analyzed according to the condition of the convex points on the outer surface. If the battery to be detected does not exist, the battery to be detected is not abnormal, and under the condition, the battery to be detected can be continuously and circularly subjected to preset charge and discharge tests.
And judging whether the test frequency of the preset charge and discharge test on the battery to be detected reaches the preset frequency, if so, stopping the preset charge and discharge test on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected, otherwise, continuing to perform the preset charge and discharge test on the battery to be detected.
The number of tests may be the total number of charge and discharge tests currently performed. The preset number may be a preset maximum number of tests.
Specifically, whether the test frequency of the preset charge and discharge test on the battery to be detected reaches the preset frequency is judged. If the number of the test times is matched with the normal use requirement of the battery to be detected, namely the number of the test times is enough, under the condition, the preset charge-discharge test of the battery to be detected can be stopped, and the condition of the convex points on the outer surface of the battery to be detected is determined, so that the compression roller to be detected can be analyzed according to the condition of the convex points on the outer surface. If not, the charging and discharging test is continued until the test times reach the preset times or the convex points exist on the outer surface of the battery to be detected.
S130, determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface.
Wherein, the detection result can be the result of whether the press roller to be detected is normal.
Specifically, whether the compression roller to be detected is abnormal or not can be determined according to the conditions of the convex points on the outer surface, and further, the abnormal position distribution condition of the compression roller to be detected can be determined according to the position distribution condition of the convex points.
Optionally, the detection result of the to-be-detected press roller may be determined according to the condition of the convex point on the outer surface in the following manner:
if the convex point condition of the outer surface is that no convex point exists, the detection result of the compression roller to be detected is normal; and if the convex point condition of the outer surface is that the convex point exists, determining that the detection result of the compression roller to be detected is abnormal, and determining the position of the abnormal point of the compression roller to be detected according to the position of the convex point.
Wherein the abnormal point can be a particle point on the press roller to be detected.
Specifically, if the protruding point on the outer surface is not present, it indicates that the battery abnormality to be detected caused by the pressing roller to be detected does not exist, and the detection result of the pressing roller to be detected is normal. If the convex points on the outer surface are convex points, the battery abnormity to be detected caused by the compression roller to be detected is indicated, and the detection result of the compression roller to be detected is abnormal. Furthermore, the positions of the convex points in the case of the convex points on the outer surface can be corresponding to the positions of the abnormal points on the compression roller to be detected.
According to the technical scheme of the embodiment of the invention, at least one battery to be detected is subjected to the preset charge and discharge test, when the test ending condition is met, the condition of the convex point on the outer surface of the battery to be detected is determined, and the detection result of the compression roller to be detected is determined according to the condition of the convex point on the outer surface, so that the problem of abnormal convex of the battery caused by the abnormal compression roller in the battery manufacturing process is solved, the relevance between the battery abnormality and the abnormal compression roller is accurately distinguished, and the effect of determining the abnormal compression roller condition in the rolling process is achieved.
Example two
Fig. 2 is a schematic flow chart of a method for detecting a pressing roller according to a second embodiment of the present invention, and on the basis of the second embodiment, for specific contents of a preset charge and discharge test, reference may be made to detailed descriptions of the present technical solution. The same or corresponding terms as those in the above embodiments are not explained in detail herein.
As shown in fig. 2, the method includes:
s210, for each battery to be detected, when the initial voltage of the battery to be detected is greater than a first target voltage, constant current discharging is conducted on the battery to be detected through a first preset current.
The first target voltage may be a preset starting voltage of a charge and discharge test. The first preset current may be a discharge current value during constant current discharge before a preset charge and discharge test is performed.
Specifically, before the preset charge and discharge test is performed, constant current discharge can be performed on each battery to be detected through a first preset current, so that the voltage of each battery to be detected is kept at a first target voltage, and the subsequent charge and discharge test process is facilitated.
S220, acquiring the real-time voltage of the battery to be detected in the constant-current discharging process, and stopping constant-current discharging of the battery to be detected when the real-time voltage reaches a first target voltage.
Specifically, the real-time voltage of the battery to be detected in the constant-current discharging process can be obtained through the voltage detection device. And when the real-time voltage does not reach the first target voltage, the constant current discharge can be continuously carried out through the first preset current, and when the real-time voltage reaches the first target voltage, the constant current discharge process can be ended.
And S230, standing the battery to be detected according to the first preset time length.
The first preset time period may be a preset standing time period after the real-time voltage reaches the first target voltage.
Specifically, in order to ensure the stability of the interior of the battery to be detected, the battery to be detected may be allowed to stand for a first preset time.
And S240, for each battery to be detected, performing constant current charging on the battery to be detected to a second target voltage through a second preset current, and performing constant voltage charging on the battery to be detected to a first target current.
The second target voltage may be a voltage to be finally reached in the constant current charging process. The second preset current may be a charging current value in a constant current charging process in the process of performing a preset charging and discharging test. The first target current may be a current to be finally reached in the constant voltage charging process.
Specifically, for each battery to be detected, constant current charging may be performed through a second preset current, so that the real-time voltage of the battery to be detected reaches a second target voltage. Furthermore, the battery to be detected can be charged with constant voltage, so that the real-time current of the battery to be detected reaches the first target current.
And S250, standing the battery to be detected according to the second preset time length.
The second preset time period may be a preset standing time period after the charging is finished.
Specifically, in order to ensure the stability of the interior of the battery to be detected, the battery to be detected may be allowed to stand for a second preset time period.
And S260, performing constant current discharging on the battery to be detected to the first target voltage through a third preset current.
The third preset current may be a discharge current value in a constant current discharge process in the preset charge and discharge test process.
Specifically, constant current discharge can be performed through the third preset current, so that the real-time voltage of the battery to be detected returns to the first target voltage.
And S270, standing the battery to be detected according to the third preset time length.
The third preset time period may be a preset standing time period after the discharge is ended.
Specifically, in order to ensure the stability of the interior of the battery to be detected, the battery to be detected may be allowed to stand for a third preset time.
It should be noted that the first preset time length, the second preset time length, and the third preset time length may be the same or different, the specific time length is set according to the actual requirement, the three are not necessarily linked, and no specific limitation is made in this embodiment. The first preset current, the second preset current and the third preset current may be the same or different, the specific duration is set according to the actual requirement, the three are not necessarily linked, and no specific limitation is made in this embodiment. The second target voltage is greater than the first target voltage so as to complete a preset charge and discharge test.
It should be further noted that S240-S270 are a preset charge and discharge test, and in the detection process, the preset charge and discharge test may be performed for multiple times, that is, S240-S270 are repeatedly executed to simulate the use of the battery to be tested.
And S280, determining the condition of the convex points on the outer surface of the battery to be detected when the test ending condition is met.
And S290, determining the detection result of the press roller to be detected according to the convex point condition of the outer surface.
According to the technical scheme of the embodiment of the invention, when the initial voltage of the battery to be detected is greater than the first target voltage, the battery to be detected is subjected to constant current discharge through the first preset current, the real-time voltage of the battery to be detected in the constant current discharge process is obtained, when the real-time voltage reaches the first target voltage, the constant current discharge of the battery to be detected is stopped, the battery to be detected is placed statically according to the first preset time length, for each battery to be detected, the battery to be detected is subjected to constant current charge to the second target voltage through the second preset current, the battery to be detected is subjected to constant voltage charge to the first target current, the battery to be detected is subjected to constant current charge to the first target voltage according to the second preset time length, the problem that the abnormity in the rolling procedure cannot be judged according to the prepared battery to be detected is solved according to the third preset time length, the test of the battery to be detected is realized, and the effect of the association between the abnormity of the charging and the discharging of the battery is further determined.
EXAMPLE III
Fig. 3 is a schematic flow chart of a method for detecting a press roller according to a third embodiment of the present invention. The battery to be detected used in the method is a ternary 55Ah energy type battery as an example. Specifically, the mixing and coating process flow of the ternary 55Ah energy type battery is completed according to a normal manufacturing flow. And then, carrying out normal slitting, die cutting, sheet checking, drying, laminating, tab welding, aluminum plastic film entering, front/side sealing, baking, liquid injection, pre-sealing, forming, edge sealing and capacity grading on a pole roll of the battery to be detected under the rolling process.
As shown in fig. 3, the method includes:
1. for the battery to be detected, the battery is discharged to 2.5V (first target voltage) by a constant current of 0.3C (first preset current).
2. Standing for 10min (first preset time).
3. The voltage is charged to 4.25V (second target voltage) by 0.5C (second preset current) constant current, and to 0.05C (first target current) constant voltage.
4. And standing for 10min (second preset time).
5. And discharging to 2.5V (first target voltage) by constant current of 0.5C (third preset current).
6. Standing for 10min (third preset time).
7. Repeating the steps 3-6 for a plurality of times (preset times), or generating convex points on the surface of the battery (the case of convex points on the outer surface).
It should be noted that in the rolling process, adhesive particles exist on the surface of the press roll and exist all the time, so that the compaction density of each pole piece of the battery to be detected at the point corresponding to the point is higher than that of other points on the pole piece, and therefore, lithium is more easily separated in the subsequent charging process, and a safety problem is caused. Experiments prove that the battery core of the battery to be detected has no obvious change on the outer surface of the aluminum-plastic film, and the pole piece in the battery core is also free from abnormality after the battery core is disassembled. There is an independent salient point on the electric core plastic-aluminum membrane surface near central part off-set edge, disassembles the back with electric core, and many inside negative pole pieces of electric core have a granule point near central off-set edge (the independent salient point that corresponds the plastic-aluminum membrane surface), and there is unusual seal of a government organization in old china corresponding to position point on the positive pole piece. The battery cell is provided with an independent convex point at the outer surface of the aluminum plastic film close to the central part and the eccentric positive part respectively, wherein the convex point close to the central part is obvious, after the battery cell is disassembled, a plurality of negative pole pieces inside the battery cell are provided with two particle points close to the central part and the eccentric positive part (corresponding to the two independent convex points on the outer surface of the aluminum plastic film), and the corresponding position points on the positive pole piece are provided with abnormal marks.
Therefore, the spot/particle spot on the compression roller in the manufacturing process of the pole piece of the battery to be detected is one of the reasons of the convex spot formed on the surface of the battery. In this way, production management and control personnel can strengthen the 5S management and control in the production process through the detection of the compression roller, and the problem is avoided.
According to the technical scheme of the embodiment of the invention, through carrying out the preset charging and discharging test on at least one battery to be detected, when the test ending condition is met, the condition of the convex point on the outer surface of the battery to be detected is determined, and the detection result of the compression roller to be detected is determined according to the condition of the convex point on the outer surface, so that the problem of abnormal convex of the battery caused by abnormal compression roller in the battery manufacturing process is solved, the relevance between the battery abnormality and the compression roller abnormality is accurately distinguished, and the effect of determining the abnormal compression roller condition in the rolling process is realized.
Example four
Fig. 4 is a schematic structural diagram of a press roller detection apparatus according to a fourth embodiment of the present invention. As shown in fig. 4, the apparatus includes: a test module 410, a bump point determination module 420, and a result determination module 430.
The testing module 410 is used for performing preset charging and discharging tests on at least one battery to be tested; the battery to be detected is obtained by performing a rolling procedure on a pressing roller to be detected; the protruding point determining module 420 is configured to determine a protruding point condition of the outer surface of the battery to be tested when the test end condition is met; and the result determining module 430 is configured to determine a detection result of the to-be-detected pressing roller according to the situation of the outer surface convex point.
Optionally, before performing the preset charge-discharge test on the at least one battery to be detected, the apparatus further includes: the pre-discharging module is used for performing constant current discharging on each battery to be detected through first preset current when the initial voltage of the battery to be detected is greater than a first target voltage; and acquiring the real-time voltage of the battery to be detected in the constant-current discharging process, and stopping the constant-current discharging of the battery to be detected when the real-time voltage reaches the first target voltage.
Optionally, after the stopping of the constant-current discharge to the battery to be detected, the apparatus further includes: and the first standing module is used for standing the battery to be detected according to a first preset time length.
Optionally, the testing module 410 is further configured to, for each battery to be detected, perform constant current charging on the battery to be detected to a second target voltage through a second preset current, and perform constant voltage charging on the battery to be detected to a first target current; and carrying out constant current discharge on the battery to be detected to the first target voltage through a third preset current.
Optionally, after the constant-voltage charging of the battery to be detected to the first target current is performed, and before the constant-current discharging of the battery to be detected to the first target voltage is performed through the third preset current, the apparatus further includes: the second standing module is used for standing the battery to be detected according to a second preset time length; after the constant current discharging is performed on the battery to be detected through the third preset current to the first target voltage, the device further comprises: and the third standing module is used for standing the battery to be detected according to a third preset time length.
Optionally, the protrusion point determining module 420 is further configured to determine whether a protrusion point exists on the outer surface of the battery to be detected, if yes, stop performing the preset charge and discharge test on the battery to be detected, and determine the protrusion point condition on the outer surface of the battery to be detected, otherwise, continue performing the preset charge and discharge test on the battery to be detected; judging whether the testing times of the preset charging and discharging tests on the battery to be detected reach the preset times or not, if so, stopping the preset charging and discharging tests on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected, otherwise, continuing the preset charging and discharging tests on the battery to be detected.
Optionally, the result determining module 430 is further configured to determine that the detection result of the to-be-detected pressing roller is normal if the outer surface convex point condition is that there is no convex point; and if the outer surface convex point condition is that a convex point exists, determining that the detection result of the to-be-detected press roller is abnormal, and determining the position of the abnormal point of the to-be-detected press roller according to the position of the convex point.
According to the technical scheme of the embodiment of the invention, at least one battery to be detected is subjected to the preset charge and discharge test, when the test ending condition is met, the condition of the convex point on the outer surface of the battery to be detected is determined, and the detection result of the compression roller to be detected is determined according to the condition of the convex point on the outer surface, so that the problem of abnormal convex of the battery caused by the abnormal compression roller in the battery manufacturing process is solved, the relevance between the battery abnormality and the abnormal compression roller is accurately distinguished, and the effect of determining the abnormal compression roller condition in the rolling process is achieved.
The compression roller detection device provided by the embodiment of the invention can execute the compression roller detection method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
EXAMPLE five
FIG. 5 illustrates a schematic diagram of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from a storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A number of components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, or the like; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.
In some embodiments, the nip roller detection method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the above-described pinch roller detection method may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the nip roller detection method by any other suitable means (e.g., by way of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.
It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired result of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method of inspecting a press roll, comprising:
performing preset charge and discharge tests on at least one battery to be detected; the battery to be detected is obtained by performing a rolling procedure on a pressing roller to be detected;
when the test end condition is met, determining the condition of the convex points on the outer surface of the battery to be detected;
when the test end condition is met, determining the condition of the convex points on the outer surface of the battery to be detected comprises the following steps:
judging whether the outer surface of the battery to be detected has a convex point, if so, stopping performing a preset charge-discharge test on the battery to be detected, and determining the condition of the convex point on the outer surface of the battery to be detected, otherwise, continuing performing the preset charge-discharge test on the battery to be detected;
judging whether the testing times of the preset charging and discharging tests on the battery to be detected reach preset times or not, if so, stopping the preset charging and discharging tests on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected, otherwise, continuing the preset charging and discharging tests on the battery to be detected;
determining a detection result of the compression roller to be detected according to the condition of the convex points on the outer surface;
the determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface comprises the following steps:
if the convex points on the outer surface do not exist, the detection result of the to-be-detected press roller is normal;
and if the outer surface convex point condition is that a convex point exists, determining that the detection result of the to-be-detected press roller is abnormal, and determining the position of the abnormal point of the to-be-detected press roller according to the position of the convex point.
2. The method according to claim 1, further comprising, before the performing the preset charge-discharge test on the at least one battery to be tested:
for each battery to be detected, when the initial voltage of the battery to be detected is greater than a first target voltage, constant current discharge is carried out on the battery to be detected through a first preset current;
and acquiring the real-time voltage of the battery to be detected in the constant-current discharging process, and stopping the constant-current discharging of the battery to be detected when the real-time voltage reaches the first target voltage.
3. The method according to claim 2, further comprising, after the stopping of the constant current discharge to the battery to be tested:
and standing the battery to be detected according to a first preset time length.
4. The method according to claim 2, wherein the performing of the predetermined charge-discharge test on the at least one battery to be tested comprises:
for each battery to be detected, carrying out constant current charging on the battery to be detected to a second target voltage through a second preset current, and carrying out constant voltage charging on the battery to be detected to a first target current;
and carrying out constant current discharge on the battery to be detected to the first target voltage through a third preset current.
5. The method according to claim 4, wherein after the constant voltage charging of the battery to be detected to a first target current and before the constant current discharging of the battery to be detected to the first target voltage by a third preset current, further comprising:
standing the battery to be detected according to a second preset time length;
after the constant current discharge is performed on the battery to be detected through the third preset current to the first target voltage, the method further comprises the following steps:
and standing the battery to be detected according to a third preset time length.
6. A detection device for a press roller, comprising:
the testing module is used for carrying out preset charging and discharging tests on at least one battery to be detected; the battery to be detected is obtained by performing a rolling procedure through a pressing roller to be detected;
the protruding point determining module is used for determining the protruding point condition of the outer surface of the battery to be detected when the test ending condition is met;
the convex point determining module is further configured to determine whether a convex point exists on the outer surface of the battery to be detected, if so, stop performing a preset charge and discharge test on the battery to be detected, and determine the convex point condition on the outer surface of the battery to be detected, otherwise, continue performing the preset charge and discharge test on the battery to be detected; judging whether the testing times of the preset charging and discharging tests on the battery to be detected reach preset times or not, if so, stopping the preset charging and discharging tests on the battery to be detected, and determining the condition of the convex points on the outer surface of the battery to be detected, otherwise, continuing the preset charging and discharging tests on the battery to be detected;
the result determining module is used for determining the detection result of the compression roller to be detected according to the condition of the convex points on the outer surface;
the result determining module is further configured to determine that the detection result of the to-be-detected compression roller is normal if the outer surface convex point condition is that no convex point exists; and if the outer surface convex point condition is that a convex point exists, determining that the detection result of the to-be-detected press roller is abnormal, and determining the position of the abnormal point of the to-be-detected press roller according to the position of the convex point.
7. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the roll detection method of any one of claims 1-5.
8. A computer-readable storage medium storing computer instructions for causing a processor to perform the roll detection method of any one of claims 1-5 when executed.
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| JP6025621B2 (en) * | 2013-03-08 | 2016-11-16 | 株式会社日立パワーソリューションズ | Roll shape measuring method and roll shape measuring apparatus for roll press equipment used in roll press equipment |
| JP2015089556A (en) * | 2013-11-05 | 2015-05-11 | トヨタ自動車株式会社 | Press roll device |
| CN208014804U (en) * | 2018-03-19 | 2018-10-26 | 合肥国轩高科动力能源有限公司 | Power battery negative pole compression roller belt cleaning device |
| CN209310770U (en) * | 2018-11-12 | 2019-08-27 | 优科能源(漳州)有限公司 | A kind of pole piece roll unit with automatic detection function |
| KR20210031172A (en) * | 2019-09-11 | 2021-03-19 | 삼성전자주식회사 | Method for diagnosing status of battery, the electronic device and storage medium therefor |
| CN110649675B (en) * | 2019-09-26 | 2021-10-01 | Oppo（重庆）智能科技有限公司 | Charging control method and device, electronic equipment and computer readable storage medium |
| CN211262162U (en) * | 2019-12-27 | 2020-08-14 | 河南力驰新能源科技有限公司 | Automatic change lithium cell quality detection equipment |
| CN111640991A (en) * | 2020-06-12 | 2020-09-08 | 梅州市量能新能源科技有限公司 | Lithium ion battery preparation method and lithium ion battery |
| CN112526365A (en) * | 2020-11-26 | 2021-03-19 | 武汉飞恩微电子有限公司 | Method, device, storage medium and apparatus for detecting battery state |
| CN113793916B (en) * | 2021-08-13 | 2023-05-02 | 永州时代新能源科技有限公司 | Continuous rolling device for lithium ion battery electrode |
| CN114544056A (en) * | 2021-08-23 | 2022-05-27 | 万向一二三股份公司 | Improved testing device and method for monitoring expansion force of lithium ion soft package battery |
| CN217222550U (en) * | 2021-12-28 | 2022-08-19 | 广西中科普慧能源有限公司 | Lithium battery roller press |
| CN114779094A (en) * | 2022-03-29 | 2022-07-22 | 梅赛德斯-奔驰集团股份公司 | Method and apparatus for swelling test of battery module |
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