WO2024000491A1 - 用于电池生产的检测方法和系统、电池的生产方法和系统 - Google Patents

用于电池生产的检测方法和系统、电池的生产方法和系统 Download PDF

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Publication number
WO2024000491A1
WO2024000491A1 PCT/CN2022/103069 CN2022103069W WO2024000491A1 WO 2024000491 A1 WO2024000491 A1 WO 2024000491A1 CN 2022103069 W CN2022103069 W CN 2022103069W WO 2024000491 A1 WO2024000491 A1 WO 2024000491A1
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Prior art keywords
end cap
film
gap value
edge
detection
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PCT/CN2022/103069
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English (en)
French (fr)
Inventor
屠银行
崔坤鹏
刘义
Original Assignee
宁德时代新能源科技股份有限公司
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Priority to CN202280048819.8A priority Critical patent/CN117642621A/zh
Priority to PCT/CN2022/103069 priority patent/WO2024000491A1/zh
Publication of WO2024000491A1 publication Critical patent/WO2024000491A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general

Definitions

  • the present application relates to the field of battery technology, and in particular to a detection method and detection system for battery production, a battery production method and production system, electronic equipment, non-transient computer-readable storage media and computer program products.
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. . As the application fields of power batteries continue to expand, their market demand is also constantly expanding.
  • the battery cells are manufactured and before they are assembled into the case, they are usually covered with a film with good flexibility to electrically insulate the cells from the case. And prevent the battery core from being damaged by the hard shell.
  • the quality of the membrane coating will directly affect the quality of the battery produced.
  • one purpose of the present application is to propose a detection method and detection system for battery production, a battery production method and production system, electronic equipment, non-transient computer-readable storage media and computer program products to improve the performance of batteries. quality.
  • An embodiment of the first aspect of the present application provides a detection method for battery production.
  • the battery includes a battery core and an end cover.
  • the detection method includes: acquiring a detection image including a battery core and an end cover covered with a film, wherein the battery includes: The membrane-covered cell and the end cap are fixedly connected; based on the detection image, the gap value between the membrane edge and the end cap is obtained; and it is determined whether the gap value between the membrane edge and the end cap meets the preset standard.
  • the detection method by detecting the gap value between the edge of the membrane and the edge of the end cap, the problem of battery quality degradation caused by membrane misalignment can be avoided, and the detection method has high accuracy and efficiency, which is beneficial to the Automation in production processes.
  • the detection method further includes: in response to the gap value not meeting the preset standard, adjusting the gap between the membrane edge and the end cap; and detecting whether the adjusted gap value between the membrane edge and the end cap is adjusted. Meet preset standards.
  • the probability of converting defective film-coated products into good products can be increased, thereby improving the overall product yield rate of the battery and avoiding unnecessary waste.
  • the battery core includes a top surface, a bottom surface, and first and second sides.
  • the top surface is adjacent to and opposite to the end cap.
  • the first and second sides are adjacent and located between the top surface and the bottom surface.
  • the detection image includes a first detection image and a second detection image.
  • the first detection image includes the first side of the battery core
  • the second detection image includes the second side of the battery core. Based on the detection image, the film edge and the end cap are determined.
  • Whether the gap value between the film edge and the end cap meets the preset standard includes: responding to determining based on the first detection image that the gap value between the film edge and the end cap meets the preset standard, and determining based on the second detection image that the gap value between the film edge and the end cap meets the preset standard.
  • the gap value meets the preset standard, and it is determined that the gap value between the membrane edge and the end cap meets the preset standard.
  • the film coating quality of the battery core can be determined more accurately and the product yield can be guaranteed.
  • determining whether the gap value between the film edge and the end cap meets a preset standard includes: detecting the first edge line of the end cap and the first edge line of the film close to the first edge line from the detection image. two edge lines; and in response to not detecting the second edge line from the detection image, determining that the gap value between the film edge and the end cap does not meet the preset standard.
  • determining whether the gap value between the film edge and the end cap meets the preset standard further includes: in response to identifying the first edge line of the end cap and the third edge line of the film close to the first edge line. Two edge lines, obtain the distance from at least one point on the first edge line to the second edge line in the preset direction, and use the distance as the gap value, and the preset direction is perpendicular to the surface of the end cover close to the battery core; and based on At least one gap value corresponding to at least one point determines whether the gap value between the membrane edge and the end cap meets the preset standard.
  • the coating quality of the film can be determined more accurately and the product yield can be guaranteed.
  • determining whether the gap value between the membrane edge and the end cap meets a preset standard includes: in response to at least one gap value corresponding to at least one point being within the preset value. Within the range, it is determined that the gap value between the membrane edge and the end cap meets the preset standard.
  • the at least one point includes at least one bisecting point on the first edge line.
  • the bisecting point on the first edge line usually corresponds to the hot melting point of the film and the end cap. Detecting the gap value at the bisecting point can avoid the formation of hot melting points during the subsequent hot melting treatment of the film and the end cap. And cause the battery to be scrapped.
  • adjusting the gap between the film edge and the end cap includes: adjusting the coating position of the film on the battery core according to the gap value and the standard gap value between the film edge and the end cap.
  • the film is beneficial for the film to be in a position where good hot melt can be formed, thereby improving product yield.
  • the embodiment of the second aspect of the present application provides a detection system for battery production.
  • the battery includes a battery core and an end cover.
  • the detection system includes a detection device.
  • the detection device includes a camera unit for photographing batteries including batteries covered with a film. Detection images of the core and the end cover, wherein the battery core covered with the film and the end cover are fixedly connected; an acquisition unit is used to obtain the gap value between the film edge and the end cover based on the detection image; and a processing unit is used to Determine whether the gap value between the membrane edge and the end cap meets the preset standards.
  • the detection system further includes: an adjustment device, communicatively connected to the detection device, and used to adjust the gap between the film edge and the end cap in response to the gap value not meeting the preset standard, wherein , the detection device is also used to detect whether the adjusted gap value between the adjusted membrane edge and the end cap meets the preset standard.
  • the battery core includes a top surface, a bottom surface, and first and second sides.
  • the top surface is adjacent to and opposite to the end cap.
  • the first and second sides are adjacent and located between the top surface and the bottom surface.
  • the detection image includes a first detection image and a second detection image
  • the first detection image includes the first side of the battery core
  • the second detection image includes the second side of the battery core
  • the processing unit is also configured to: respond to the The first detection image determines that the gap value between the membrane edge and the end cap meets the preset standard, and determines based on the second detection image that the gap value between the membrane edge and the end cap meets the preset standard, determining the gap between the membrane edge and the end cap.
  • the gap value meets the preset standard.
  • the detection system further includes: a detection unit configured to detect the first edge line of the end cap and the second edge line of the film close to the first edge line from the detection image; and in response to not detecting the first edge line from the detection image.
  • the second edge line is detected and it is determined that the gap value between the membrane edge and the end cap does not meet the preset standard.
  • the processing unit is further configured to: in response to identifying the first edge line of the end cap and the second edge line of the film close to the first edge line, obtain at least one point on the first edge line at a preset direction to the second edge line, and use the distance as the gap value.
  • the preset direction is perpendicular to the surface of the end cap close to the battery core; and based on at least one gap value corresponding to at least one point, determine the distance between the membrane edge and the end cap. Whether the gap value between them meets the preset standard.
  • the processing unit is further configured to: in response to at least one gap value corresponding to at least one point being within a preset range, determine that the gap value between the film edge and the end cap meets the preset standard.
  • the detection device includes multiple camera units.
  • the camera unit is a CCD camera.
  • the adjustment device is also used to adjust the coating position of the film on the battery core according to the gap value and the standard gap value between the film edge and the end cover.
  • a third embodiment of the present application provides a method for producing a battery.
  • the production method includes: using the detection method of any embodiment of the present application to determine whether the gap value between the edge of the film covering the battery core and the end cap meets the predetermined value. setting a standard; and in response to determining that the gap value between the edge of the film and the end cap meets the preset standard, performing a heat-melting process on the film and the end cap.
  • the production method when the gap between the film edge and the end cap is adjusted in response to the gap value not meeting the preset standard, the production method further includes: responding to the adjusted gap between the film edge and the end cap. Adjust the gap value to meet the preset standards, and perform hot melt treatment on the adjusted membrane and end cap.
  • Adjusting unqualified film-coated products can increase the probability of converting defective film-coated products into good products, thereby improving the overall product yield rate of the battery and avoiding unnecessary waste.
  • the production method further includes: in response to the adjusted gap value not meeting the preset standard, discharging the film-coated battery core and end cap from the production line.
  • Product yield and production efficiency can be improved by removing film-coated products that do not meet standards from the production line in a timely manner without subsequent processing such as hot melt treatment.
  • a fourth embodiment of the present application provides a battery production system.
  • the production system includes: the detection system of any embodiment of the present application, used to determine whether the gap value between the edge of the film covering the battery core and the end cap is Complying with the preset standard; and a hot melting device, communicatively connected with the detection device, and used to perform heat melting treatment on the film and the end cap in response to determining that the gap value between the film edge and the end cap meets the preset standard.
  • the hot melt device is also used to: in response to the adjustment gap value between the adjusted film edge and the end cap meeting the preset standard, adjust the adjusted film and the end cap. The end caps are heat-melted.
  • the production system further includes: a conveying device, communicatively connected to the detection device, for ejecting the film-covered battery core and end cap from the production line in response to the adjusted gap value not meeting the preset standard.
  • An embodiment of the fifth aspect of the present application provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program, and when the computer program is executed by the at least one processor Implement the detection method and production method of the above embodiments.
  • An embodiment of the sixth aspect of the present application provides a battery system, including the electronic device of the above embodiment.
  • An embodiment of the seventh aspect of the present application provides a non-transitory computer-readable storage medium storing a computer program, wherein the computer program implements the detection method and production method of the above embodiment when executed by a processor.
  • An embodiment of the eighth aspect of the present application provides a computer program product, including a computer program, wherein the computer program implements the detection method and production method of the above embodiment when executed by a processor.
  • Figure 1 is a schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application.
  • Figure 2 is a flow chart of a detection method for battery production according to some embodiments of the present application.
  • Figure 3 is a schematic structural diagram of a battery core and an end cap according to some embodiments of the present application.
  • Figure 4 is a flow chart of a detection method for battery production according to some embodiments of the present application.
  • Figure 5 is an enlarged view of area A in Figure 3;
  • Figure 6 is a schematic block diagram of a detection system for battery production according to some embodiments of the present application.
  • Figure 7 is a schematic structural diagram of an adjustment device according to some embodiments of the present application.
  • Figure 8 is a schematic structural diagram of a camera unit according to some embodiments of the present application.
  • Figure 9 is a schematic block diagram of a battery production system according to some embodiments of the present application.
  • Figure 10 is a flow chart of a detection method for battery production according to some embodiments of the present application.
  • Figure 11 is a flow chart of a battery production method according to some embodiments of the present application.
  • Battery cell 100 end cover 110, case 120, battery core 130, membrane 140;
  • Electrode terminal 111 opening 121, tab 131, top surface 130A, bottom surface 130B, first side 130C, second side 130D, area A, first edge line 110A, second edge line 140A;
  • Detection system 600 detection device 610, adjustment device 620, camera unit 611, acquisition unit 612, processing unit 613, detection unit 614;
  • Production system 900 hot melt device 910, conveyor device 920.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. . As the application fields of power batteries continue to expand, their market demand is also constantly expanding.
  • the film covering the battery core is lightweight, soft and easily charged with static electricity, it is not easy to position and is easily damaged during the covering process. Therefore, position deviation, partial or complete loss of the covering film, etc. often occur. Phenomenon.
  • the quality of the membrane coating will directly affect the quality of the battery produced. For example, in some cases, after the battery core is coated, the film and the end cover of the battery case are directly heat-fused. However, for example, when the coating position of the film is deviated, it may easily lead to problems such as poor hot melting, damage to the film caused by the hot melt head of the hot melt equipment coming into contact with the coating film, and the formation of hot melt explosion points.
  • the battery cell production methods and production systems disclosed in the embodiments of the present application can be, but are not limited to, used to produce secondary batteries, primary batteries, lithium-sulfur batteries, sodium-ion batteries or magnesium-ion batteries.
  • the battery may include a case and battery cells, and one or more battery cells may be accommodated in the case.
  • FIG. 1 is an exploded structural diagram of a battery cell 100 provided in some embodiments of the present application.
  • the battery cell 100 refers to the smallest unit that constitutes a battery.
  • the battery cell 100 includes an end cover 110 , a case 120 , a battery core 130 and other functional components.
  • the end cap 110 refers to a component that covers the opening 121 of the housing 120 to isolate the internal environment of the battery cell 100 from the external environment.
  • the shape of the end cap 110 may be adapted to the shape of the housing 120 to fit the housing 120 .
  • the end cap 110 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 110 is less likely to deform when subjected to extrusion and collision, so that the battery cell 100 can have higher durability. Structural strength and safety performance can also be improved.
  • Functional components such as electrode terminals 111 may be provided on the end cap 110 .
  • the electrode terminal 111 may be used to electrically connect with the battery core 130 for outputting or inputting electric energy of the battery cell 100 .
  • the end cap 110 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 100 reaches a threshold.
  • the end cap 110 can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not particularly limited in the embodiment of the present application.
  • an insulating member may be provided inside the end cover 110 , and the insulating member may be used to isolate the electrical connection components in the housing 120 from the end cover 110 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber, etc.
  • the housing 120 is a component used to cooperate with the end cover 110 to form an internal environment of the battery cell 100 , wherein the formed internal environment can be used to accommodate the battery core 130 , the electrolyte, and other components.
  • the housing 120 and the end cover 110 may be independent components, and an opening 121 may be provided on the housing 120.
  • the end cover 110 covers the opening 121 at the opening 121 to form the internal environment of the battery cell 100.
  • the end cover 110 and the housing 120 can also be integrated.
  • the end cover 110 and the housing 120 can form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the inside of the housing 120 , the end cover 110 is then closed with the housing 120 .
  • the housing 120 may be of various shapes and sizes, such as rectangular parallelepiped, cylinder, hexagonal prism, etc. Specifically, the shape of the housing 120 can be determined according to the specific shape and size of the battery core 130 .
  • the housing 120 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not particularly limited in the embodiments of the present application.
  • the battery cell 130 is a component in the battery cell 100 that undergoes electrochemical reactions.
  • One or more battery cells 130 may be included in the housing 120 .
  • the battery core 130 is mainly formed by winding or stacking positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.
  • the portions of the positive electrode sheet and the negative electrode sheet that contain active material constitute the main body of the battery core, and the portions of the positive electrode sheet and the negative electrode sheet that do not contain active material constitute the tabs 131 respectively.
  • the positive electrode tab and the negative electrode tab can be located together at one end of the main body or respectively located at both ends of the main body.
  • the positive active material and the negative active material react with the electrolyte, and the tabs 131 are connected to the electrode terminals to form a current loop.
  • Figure 2 is a flow chart of a detection method for battery production provided by some embodiments of the present application.
  • Figure 3 is a schematic structural diagram of the battery core 130 and end cap 110 provided by some embodiments of the present application. Please refer to Figures 1 to 3.
  • Some embodiments of the present application provide a detection method for battery production.
  • the battery includes a battery core 130 and an end cover 110.
  • the detection method includes: step S210, obtaining a battery including a battery coated with a film 140.
  • Detection images of the core 130 and the end cap 110 in which the film-coated battery core 130 and the end cap 110 are fixedly connected; step S220, based on the detection image, obtain the gap value between the edge of the film 140 and the end cap 110; and steps S230, determine whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard.
  • the end cap 110 and the battery core 130 are fixedly connected through connecting pieces.
  • the battery core 130 includes an opposing top surface 130A and a bottom surface 130B, and a plurality of side surfaces 130C located between the top surface 130A and the bottom surface 130B.
  • One of top surface 130A and top surface 130B (eg, 130A) is adjacent to and opposite end cap 110 .
  • the film 140 covers at least the plurality of side surfaces 130C of the battery core 130 and the bottom surface 130B away from the end cover 110 .
  • the film 140 protrudes from the top surface 130A in a direction close to the end cap 110 for thermal fusion with the end cap 110; in actual circumstances, because the film 140 is light, soft and easily charged with static electricity, the film 140 It may fail to protrude from the top surface 130A in a direction close to the end cap 110 .
  • Detecting whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard refers to detecting the gap value between the edge of the film 140 close to the end cap 110 and the end cap 110 , where the preset standard can be based on different models. This application does not limit the production requirements of the battery.
  • the end cap 110 may include a lower plastic, and the thermal fusion of the film 140 and the end cap 110 may refer to the thermal fusion of the film 140 and the lower plastic of the end cap 110 .
  • the detection image may be an image taken facing one of the plurality of side surfaces 130C of the cell 130 so as to include the gap between the edge of the film 140 and the end cap 110 in the detection image.
  • Figure 4 is a flow chart of a detection method for battery production provided by some embodiments of the present application. Please refer to Figures 3 and 4.
  • the detection method further includes: step S410, in response to the gap value not meeting the preset standard, adjusting the gap between the edge of the film 140 and the end cap 110; and Step S420: Check whether the adjusted gap value between the adjusted edge of the film 140 and the end cap 110 meets the preset standard.
  • adjusting the film 140 means adjusting the covering position of the film 140 on the battery core 130 , thereby adjusting the gap between the edge of the mold 140 and the end cover 110 .
  • the adjustment method may include removing the entire film 140 and then covering it again or directly adjusting the local position of the film 140, which is not limited in this application.
  • the detection of the gap value and the adjustment of the membrane 140 can be performed in situ at the wrapping station.
  • Adjusting the products that are unqualified for the first coating film 140 can increase the probability of converting defective products into good products, thereby improving the overall product yield rate of the battery and reducing the waste of the film 140 .
  • the battery core 130 includes a top surface 130A, a bottom surface 130B, and first and second side surfaces 130C and 130D.
  • the top surface 130A is close to the end cap 110 and opposite to the end cap 110 , and the first and second side surfaces 130C and 130D are The side 130D is adjacent and located between the top surface 130A and the bottom surface 130B, wherein the detection image includes a first detection image and a second detection image, the first detection image includes the first side 130C of the battery core 130, and the second detection image includes the battery core 130.
  • the second side 130D of the core 130 determines whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard including: in response to determining the gap value between the edge of the film 140 and the end cap 110 based on the first detection image.
  • the gap value meets the preset standard, and it is determined based on the second detection image that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard, and it is determined that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard.
  • the steps of determining that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard based on the first detection image and determining that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard based on the second detection image can be performed simultaneously. , can also be done in sequence.
  • the coating quality of the film 140 can be determined more accurately to ensure product yield.
  • determining whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard includes: detecting the first edge line 110A of the end cap 110 and the first edge line 110A of the end cap 110 and the film 140 from the detection image. a second edge line 140A close to the first edge line 110A; and in response to not detecting the second edge line 140A from the detection image, it is determined that the gap value between the edge of the film 140 and the end cap 110 does not meet the preset standard.
  • failure to detect second edge line 140A may correspond to a situation such as missing or damaged film 140 .
  • the second edge line 140A is not detected, it may be determined that the coating of the film 140 is unqualified.
  • the cells in response to not detecting the second edge line 140A from the detection image, the cells may be discharged from the production line.
  • the battery cores 130 with damaged or missing membranes 140 can be eliminated in time to ensure product yield.
  • the distance dn is used as the gap value, and the preset direction is perpendicular to the surface 130B of the end cap 110 close to the battery core 130; and based on at least one gap value corresponding to at least one point, it is determined whether the gap value between the edge of the film 140 and the end cap 110 meets Default standards.
  • FIG. 3 shows the distances d1 and d2 from two points on the first edge line 110A to the second edge line 140A. It should be understood that the greater the number of detection sites, the more accurate the detection.
  • the coating quality of the film 140 can be determined more accurately to ensure product yield.
  • determining whether the gap value between the edge of the membrane 140 and the end cap 110 meets a preset standard based on at least one gap value corresponding to at least one point includes: responding to at least one gap value corresponding to at least one point All are within the preset range, and it is determined that the gap value between the edge of the membrane 140 and the end cap 110 meets the preset standard.
  • the preset range may be, for example, 0.1 centimeters (cm) to 0.5cm.
  • the at least one gap value corresponding to at least one point may be within the preset range, which may be at least one point on the first edge line 110A to the first edge line 110A.
  • the preset range can be set according to the production requirements of different types of batteries, and this application does not limit this.
  • the at least one point includes at least one bisecting point on the first edge line 110A.
  • FIG. 3 shows four equal points on the first edge line 110A (the first edge line 110A is evenly divided into three equal points). At least one point may include four equal points. At least one of the equal points.
  • the bisecting point on the first edge line 110A usually corresponds to the hot melting point of the film 140 and the end cover 110.
  • the gap value at the bisecting point has a greater impact on the hot melt quality. Detecting the gap value at this position can avoid During the subsequent heat-melting process of the film 140 and the end cap 110, for example, heat-melting explosion points are formed, resulting in the battery being scrapped.
  • adjusting the gap value between the edge of the membrane 140 and the end cap 110 includes: adjusting the position of the membrane 140 in the battery core 130 according to the gap value and the standard gap value between the edge of the membrane 140 and the end cap 110 covering position.
  • adjusting the coating position of the film 140 on the battery core 130 includes adjusting at each detection position according to the difference between the gap value at the position and the standard gap value. For example, referring to FIG. 5 , when the gap value at the detection site is less than the standard gap value, the film 140 is adjusted so that the edge of the film 140 is further away from the first edge line 110A of the end cap 110 at this position by a distance of The difference between the gap value and the standard gap value; when the gap value at the detection site is greater than the standard gap value, the film 140 is adjusted so that the edge of the film 140 is closer to the first edge line 110A of the end cap 110 at this position, and the closer The distance is the difference between the gap value and the standard gap value.
  • the film 140 is beneficial for the film 140 to be in a position where good hot melt can be formed, thereby improving product yield.
  • FIG. 6 is a schematic block diagram of a detection system 600 for battery production according to some embodiments of the present application.
  • the battery includes a battery core 130 and an end cap 110.
  • the detection system 600 includes a detection device 610.
  • the detection device 610 includes a camera unit 611 for taking pictures.
  • the acquisition unit 612 is used to acquire the edge of the film 140 based on the detection image the gap value between the edge of the film 140 and the end cap 110; and the processing unit 613 for determining whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard.
  • the detection system 600 further includes: an adjustment device 620, communicatively connected with the detection device 610, and configured to adjust the gap between the edge of the membrane 140 and the end cap 110 in response to the gap value not meeting the preset standard. Adjustment is performed, wherein the detection device 610 is also used to detect whether the adjusted gap value between the edge of the adjusted membrane 140 and the end cap 110 meets the preset standard.
  • FIG. 7 is a schematic structural diagram of an adjustment device 620 provided by some embodiments of the present application.
  • the adjustment device 620 may include a set of clamps that may hold the membrane 140 .
  • the adjustment device 620 can control the clamp to adjust the covering position of the film 140 on the battery core 130 according to the detection result of the detection device 610 .
  • FIG. 8 is a schematic structural diagram of the camera unit 611 provided by some embodiments of the present application.
  • the detection device 610 may include multiple camera units 611, and the same detection image may be captured by a single camera unit 611, or may be captured by multiple camera units 611 in collaboration.
  • Two camera units 611 are exemplarily shown in FIG. 8 , where the shooting range of each camera unit 611 is shown by a dotted line.
  • the top surface 130A is close to the end cap 110 and opposite to the end cap 110
  • the first side surface 130C and the second side 130D are adjacent and located between the top surface 130A and the bottom surface 130B
  • the detection image includes a first detection image and a second detection image
  • the first detection image includes the first side 130C of the battery core 130
  • the second detection image 130C is adjacent to the second side 130D.
  • the detection image includes the second side 130D of the cell 130, and the processing unit 613 is further configured to: in response to determining based on the first detection image that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard, and based on the second detection The image determines that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard, and it is determined that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard.
  • the detection system 600 further includes: a detection unit 614 for detecting the first edge line 110A of the end cap 110 and the second edge line 140A of the film 140 close to the first edge line 110A from the detection image. ; and in response to not identifying the second edge line 140A from the detection image, it is determined that the gap value between the edge of the film 140 and the end cap 110 does not meet the preset standard.
  • the preset direction is close to the cell of the end cap 110
  • the surface 130B of 130 is vertical; and based on at least one gap value corresponding to at least one point, it is determined whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard.
  • the processing unit 613 is further configured to: in response to at least one gap value corresponding to at least one point being within a preset range, determine that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard. .
  • the detection device 610 includes multiple camera units 611, and the relative positions between the multiple camera units 611 can be freely adjusted.
  • the relative positions between the plurality of camera units 611 can be freely adjusted, so that the detection of gap values can be applied to batteries of different types.
  • the camera unit 611 is a CCD camera.
  • the adjustment device 620 is also used to adjust the coating position of the film 140 on the battery core 130 according to the gap value and the standard gap value between the edge of the film 140 and the end cover 110 .
  • Some embodiments of the present application provide a battery production method, including: using the detection method of any embodiment of the present application to determine whether the gap value between the edge of the film 140 covering the battery core 130 and the end cover 110 meets the predetermined value. setting a standard; and in response to determining that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard, performing a heat melting process on the film 140 and the end cap 110 .
  • the production method further includes: responding to the adjusted edge of the membrane 140 and the end cap.
  • the adjusted gap value between 110 meets the preset standard, and the adjusted membrane 140 and end cap 110 are heat-fused.
  • Adjusting products that are unqualified for coating with the membrane 140 can increase the probability of converting defective membrane-coated products into good products, thereby improving the overall product yield rate of the battery and avoiding unnecessary waste.
  • the production method further includes: in response to the adjusted gap value not meeting the preset standard, discharging the battery core 130 and the end cap 110 covered with the film 140 from the production line.
  • the coating quality of the film 140 can be further determined through manual inspection, and the quality of the coating of the film 140 can be further determined through manual adjustment before entering the production line again.
  • discharging products that do not meet the standards covered by the film 140 out of the production line in a timely manner without performing subsequent processes such as hot melt processing can not only improve product yield, but also improve production efficiency.
  • FIG. 9 is a schematic block diagram of a production system 900 provided by some embodiments of the present application.
  • Some embodiments of the present application provide a battery production system 900, including: the detection system 600 of any embodiment of the present application, used to determine the gap between the edge of the film 140 covering the battery core 130 and the end cover 110 Whether the value meets the preset standard; and the hot melt device 910 is communicatively connected with the detection device 610, and is used to perform a test on the film 140 and the end cap 110 in response to determining that the gap value between the edge of the film 140 and the end cap 110 meets the preset standard. Hot melt treatment.
  • the hot melt device 910 is also used to: in response to the adjusted gap value between the edge of the adjusted film 140 and the end cap 110 meeting the preset standard, adjust the The adjusted film 140 and the end cap 110 are heat-fused.
  • the production system 900 further includes: a transmission device 920 communicatively connected with the detection device 610, for transferring the battery core 130 and the end cap 110 covered with the film 140 in response to the adjusted gap value not meeting the preset standard. Discharge the production line.
  • the conveying device 920 is also used to discharge the battery core 130 and the end cap 110 covered with the film 140 from the production line in response to no edge line of the film 140 being detected from the detection image.
  • Some embodiments of the present application provide an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program, and the computer program is implemented when executed by the at least one processor.
  • Some embodiments of the present application provide a battery system, including the electronic device of the embodiment of the present application.
  • Some embodiments of the present application provide a non-transitory computer-readable storage medium storing a computer program, wherein the computer program implements the detection method and production method of the embodiments of the present application when executed by a processor.
  • Some embodiments of the present application provide a computer program product, including a computer program, wherein the computer program implements the detection method and the production method of the embodiments of the present application when executed by a processor.
  • the detection method may include the following steps: Step S1010, obtaining the first side 130C1 and end cap of the battery core 130 covered with the film 140 The first detection image of 110 and the second detection image of the second side 130C2 of the battery core 130 covered with the film 140; step S1020, identify the first edge line of the end cap 110 from the first detection image and the second detection image.
  • step S1030 in response to identifying the first edge line 110A and the second edge line 140A, obtain at least one point on the first edge line 110A to the first edge line 110A.
  • the distance dn between the two edge lines 140A, and the distance dn is used as the gap value, based on at least one gap value corresponding to at least one point, determine whether the gap value between the edge of the film 140 and the end cap 110 meets the preset standard; step S1040, response When at least one gap value does not meet the preset standard, adjust the covering position of the film 140 on the battery core 130; step S1050, detect whether the adjusted gap value between the edge of the adjusted film 140 and the end cap 110 meets the preset standard.
  • the detection device 610 includes four camera units 611 .
  • the four camera units 611 are all CCD cameras. Two of the CCD cameras are used to capture the first detection image of the first side 130C and the end cover 110 of the battery core 130 covered with the film 140 .
  • the other two CCD cameras are A second detection image including the second side 130D of the battery core 130 covered with the film 140 and the end cover 110 is captured, and four CCD cameras are configured to acquire the detection images simultaneously.
  • the adjustment device 620 is a pair of clamping claws (refer to FIG. 7 ), which can clamp the edges of the film 140 and are used to adjust the position of the film according to the gap value obtained by the acquisition unit and the standard gap value between the film edge and the end cap. The coating position on the battery core.
  • the battery production method may include: step 1110, obtaining a first detection image of the first side 130C and the end cover 110 of the battery core 130 covered with the film 140 and the first detection image of the battery core 130 covered with the film 140.
  • step S1130 in response to the second edge line 140A not being identified, it is determined that the gap value between the edge of the film 140 and the end cover 110 does not meet the preset standard, and the battery core 130 and the end cover covered with the film 140 are
  • the cover 110 is discharged from the production line; step S1140, in response to identifying the first edge line 110A and the second edge line 140A, obtain the distance dn from at least one point on the first edge line 110A to the second edge line 140A, and use the distance dn as The gap value, based on at least one gap value corresponding to at least one point, determines whether the gap value between the edge of the membrane 140 and the end cap 110 meets the preset standard; step S1150, in response to at least one gap value meeting the preset standard, the membrane 140 Perform hot melt processing with the end cap 110; Step S1160, in response to at least one gap value not meeting the preset standard, adjust the covering position of the film 140 on the battery core 130; Step S1170, detect the edge of the

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Abstract

本申请提供一种用于电池生产的检测方法和检测系统、电池的生产方法和生产系统、电子设备、非瞬时计算机可读存储介质和计算机程序产品，其中，电池包括电芯和端盖，检测方法包括：获取包括包覆有膜的电芯和端盖的检测图像；基于检测图像，获取膜边缘与端盖之间的间隙值；和确定膜边缘与端盖之间的间隙值是否符合预设标准。

Description

用于电池生产的检测方法和系统、电池的生产方法和系统 技术领域
本申请涉及电池技术领域，尤其涉及一种用于电池生产的检测方法和检测系统、电池的生产方法和生产系统、电子设备、非瞬时计算机可读存储介质和计算机程序产品。
背景技术
随着清洁能源的迅速发展，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
目前，在动力电池的生产过程中，电池的电芯在制造完成后、在被组装进壳体之前，通常使用具有较好柔韧性的膜进行包覆，以使电芯与壳体电绝缘，并防止电芯被硬质壳体损伤。然而，膜的包覆质量会直接影响所生产的电池的品质。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请的一个目的在于提出一种用于电池生产的检测方法和检测系统、电池的生产方法和生产系统、电子设备、非瞬时计算机可读存储介质和计算机程序产品，以改善电池的品质。
本申请第一方面的实施例提供一种用于电池生产的检测方法，电池包括电芯和端盖，检测方法包括：获取包括包覆有膜的电芯和端盖的检测图像，其中，包覆有膜的电芯和端盖固定连接；基于检测图像，获取膜边缘与端盖之间的间隙值；和确定膜边缘与端盖之间的间隙值是否符合预设标准。
本申请实施例的技术方案中，通过对膜边缘与端盖边缘之间的间隙值进行检测，可以避免由于膜错位而导致的电池品质劣化问题，并且检测方法的精度高、效率高，利于在生产流程中自动化。
在一些实施例中，检测方法还包括：响应于间隙值不符合预设标准，对膜边缘与端盖之间的间隙进行调整；检测经调整后膜边缘与端盖之间的调整间隙值是否符合预设标准。
通过对膜包覆不合格的产品进行调整，可以增加膜包覆不良品转变为良品的几率，从而提高电池的总产品良率，避免不必要的浪费。
在一些实施例中，电芯包括顶面、底面以及第一侧面和第二侧面，顶面靠近端盖并且与端盖相对，第一侧面和第二侧面相邻并且位于顶面和底面之间，其中，检测图像包括第一检测图像和第二检测图像，第一检测图像包括电芯的第一侧面，第二检测图像包括电芯的第二侧面，基于检测图像，确定膜边缘与端盖之间的间隙值是否符合预设标准包括：响应于基于第一检测图像确定膜边缘与端盖之间的间隙值符合预设标准，以及基于第二检测图像确定膜边缘与端盖之间的间隙值符合预设标准，确定膜边缘与端盖之间的间隙值符合预设标准。
通过从多个方向检测膜边缘与顶盖边缘之间的间隙值，可以更准确地确定电芯的膜的包覆质量，保证产品良率。
在一些实施例中，基于检测图像，确定膜边缘与端盖之间的间隙值是否符合预设标准包括：从检测图像中检测端盖的第一边缘线和膜的靠近第一边缘线的第二边缘线；和响应于从检测图像中未检测到第二边缘线，确定膜边缘与端盖之间的间隙值不符合预设标准。
通过将未检测到膜的边缘线确定为间隙值不符合标准，可以将膜破损或遗漏的电芯及时排除，保证产品良率。
在一些实施例中，基于检测图像，确定膜边缘与端盖之间的间隙值是否符合预设标准还包括：响应于识别出端盖的第一边缘线和膜的靠近第一边缘线的第二边缘线，获取第一边缘线上的至少一个点在预设方向上到第二边缘线的距离，并将距离作为间隙值，预设方向与端盖的靠近电芯的表面垂直；和基于至少一个点相应的至少一个间隙值，确定膜边缘与端盖之间的间隙值是否符合预设标准。
通过在多个检测位点检测间隙值是否合格，可以更准确地确定膜的包覆质量，保证产品良率。
在一些实施例中，基于至少一个点相应的至少一个间隙值，确定膜边缘与端盖之间的间隙值是否符合预设标准包括：响应于至少一个点相应的至少一个间隙值均在预设范围内，确定膜边缘与端盖之间的间隙值符合预设标准。
检测间隙值时设置严格的检测标准，有助于把控膜的包覆质量，提高产品良率。
在一些实施例中，至少一个点包括第一边缘线上的至少一个等分点。
第一边缘线上的等分点通常与膜和端盖的热熔位点对应，检测等分点处的间隙值，可以避免在后续膜与端盖的热熔处理中例如形成热熔炸点而导致电池报废。
在一些实施例中，对膜边缘与端盖之间的间隙进行调整包括：根据间隙值以及膜边缘和端盖之间的标准间隙值，调整膜在电芯上的包覆位置。
通过上述调整，有利于膜处于可以形成良好热熔的位置，从而提高产品良率。
本申请第二方面的实施例提供一种用于电池生产的检测系统，电池包括电芯和端盖，检测系统包括检测装置，检测装置包括：摄像单元，用于拍摄包括包覆有膜的电芯和端盖的检测图像，其中，包覆有膜的电芯和端盖固定连接；获取单元，用于基于检测图像，获取膜边缘与端盖之间的间隙值；和处理单元，用于确定膜边缘与端盖之间的间隙值是否符合预设标准。
在一些实施例中，检测系统还包括：还包括：调整装置，与检测装置通信连接，并且用于响应于间隙值不符合预设标准，对膜边缘与端盖之间的间隙进行调整，其中，检测装置还用于检测经调整后的膜边缘与端盖之间的调整间隙值是否符合预设标准。
在一些实施例中，电芯包括顶面、底面以及第一侧面和第二侧面，顶面靠近端盖并且与端盖相对，第一侧面和第二侧面相邻并且位于顶面和底面之间，其中，检测图像包括第一检测图像和第二检测图像，第一检测图像包括电芯的第一侧面，第二检测图像包括电芯的第二侧面，并且处理单元还用于：响应于基于第一检测图像确定膜边缘与端盖之间的间隙值符合预设标准，以及基于第二检测图像确定膜边缘与端盖之间的间隙值符合预设标准，确定膜边缘与端盖之间的间隙值符合预设标准。
在一些实施例中，检测系统还包括：检测单元，用于从检测图像中检测端盖的第一边缘线和膜的靠近第一边缘线的第二边缘线；和响应于从检测图像中未检测到第二边缘线，确定膜边缘与端盖之间的间隙值不符合预设标准。
在一些实施例中，处理单元还用于：响应于识别出端盖的第一边缘线和膜的靠近第一边缘线的第二边缘线，获取第一边缘线上的至少一个点在预设方向上到第二边缘线的距离，并将距离作为间隙值，预设方向与端盖的靠近电芯的表面垂直；和基于至少一个点相应的至少一个间隙值，确定膜边缘与端盖之间的间隙值是否符合预设标准。
在一些实施例中，处理单元还用于：响应于至少一个点相应的至少一个间隙值均在预设范围内，确定膜边缘与端盖之间的间隙值符合预设标准。
在一些实施例中，检测装置包括多个摄像单元。
在一些实施例中，摄像单元为CCD相机。
在一些实施例中，调整装置还用于根据间隙值以及膜边缘和端盖之间的标准间隙值，调整膜在电芯上的包覆位置。
本申请第三方面的实施例提供一种电池的生产方法，生产方法包括：利用本申请任一实施例的检测方法确定包覆于电芯的膜边缘与端盖之间的间隙值是否符合预设标准；和响应于确定膜边缘与端盖之间的间隙值符合预设标准，对膜与端盖进行热熔处理。
本申请实施例的技术方案中，通过在热熔处理前对膜边缘与端盖边缘之间的间隙值进行检测，可以避免由于膜错位而导致的电池品质劣化问题，并且由于不对膜包覆不良品进行热熔处理，因此可以提高电池生产效率，节约成本。
在一些实施例中，当响应于间隙值不符合预设标准，对膜边缘与端盖之间的间隙进行调整时，生产方法还包括：响应于经调整后的膜边缘与端盖之间的调整间隙值符合预设标准，对经调整后的膜与端盖进行热熔处理。
对膜包覆不合格的产品进行调整，可以增加膜包覆不良品转变为良品的几率，从而提高电池的总产品良率，避免不必要的浪费。
在一些实施例中，生产方法还包括：响应于调整间隙值不符合预设标准，将包覆有膜的电芯和端盖排出生产线。
将不符合标准的膜包覆产品及时排出生产线，而不进行后续例如热熔处理，可以提高产品良率和生产效率。
本申请第四方面的实施例提供一种电池的生产系统，生产系统包括：本申请任一实施例的检测系统，用于确定包覆于电芯的膜边缘与端盖之间的间隙值是否符合预设标准；和热熔装置，与检测装置通信连接，用于响应于确定膜边缘与端盖之间的间隙值符合预设标准，对膜与端盖进行热熔处理。
在一些实施例中，当检测系统包括调整装置时，热熔装置还用于：响应于经调整后的膜边缘与端盖之间的调整间隙值符合预设标准，对经调整后的膜与端盖进行热熔处理。
在一些实施例中，生产系统，还包括：传送装置，与检测装置通信连接，用于响应于调整间隙值不符合预设标准，将包覆有膜的电芯和端盖排出生产线。
本申请第五方面的实施例提供一种电子设备，包括：至少一个处理器；和与至少一个处理器通信连接的存储器，其中，存储器存储有计算机程序，计算机程序在被至少一个处理器执行时实现上述实施例的检测方法和生产方法。
本申请第六方面的实施例提供一种电池的系统，包括上述实施例的电子设备。
本申请第七方面的实施例提供一种存储有计算机程序的非瞬时计算机可读存储介质，其中，计算机程序在被处理器执行时实现上述实施例的检测方法和生产方法。
本申请第八方面的实施例提供一种计算机程序产品，包括计算机程序，其中，计算机程序在被处理器执行时实现上述实施例的检测方法和生产方法。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
在附图中，除非另外规定，否则贯穿多个附图相同的附图标记表示相同或相似的部件或元素。这些附图不一定是按照比例绘制的。应该理解，这些附图仅描绘了根据本申请公开的一些实施方式，而不应将其视为是对本申请范围的限制。
图1为本申请一些实施例的电池单体的分解结构示意图；
图2为本申请一些实施例的用于电池生产的检测方法的流程图；
图3为本申请一些实施例的电芯与端盖的结构示意图；
图4为本申请一些实施例的用于电池生产的检测方法的流程图；
图5为图3中区域A的放大图；
图6为本申请一些实施例的用于电池生产的检测系统的示意性框图；
图7为本申请一些实施例的调整装置的结构示意图；
图8为本申请一些实施例的摄像单元的结构示意图；
图9为本申请一些实施例的电池的生产系统的示意性框图；
图10为本申请一些实施例的用于电池生产的检测方法的流程图；
图11为本申请一些实施例的电池的生产方法的流程图。
附图标记说明：
电池单体100，端盖110，壳体120，电芯130，膜140；
电极端子111，开口121，极耳131，顶面130A，底面130B，第一侧面130C，第二侧面130D，区域A，第一边缘线110A，第二边缘线140A；
检测系统600，检测装置610，调整装置620，摄像单元611，获取单元612，处理单元613，检测单元614；
生产系统900，热熔装置910，传送装置920。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例和附图仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。附图中只示意性地表示出了与本申请技术方案相关的部分，它们并不代表其作为产品的实际结构。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”、“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或 成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
随着清洁能源的迅速发展，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
目前，在动力电池的生产过程中，电池的电芯在制造完成后、在被组装进壳体之前，通常使用具有较好柔韧性的膜进行包覆，以使电芯与壳体电绝缘，并防止电芯被硬质壳体损伤。
本申请人注意到，由于包覆电芯的膜轻量质、柔软且易带静电等，在包覆过程中不容易定位且易破损，因此经常出现包覆膜位置偏差、部分或全部缺失等现象。然而，膜的包覆质量会直接影响所生产的电池的品质。例如，在一些情形下，对电芯进行包膜操作后，会直接将膜与电池壳体的端盖进行热熔处理。然而，例如当膜的包覆位置出现偏差时，容易导致热熔不良、热熔设备的热熔头接触包覆膜而造成膜损坏、以及形成热熔炸点等问题。
为了缓解由膜包覆不良而导致的电池品质劣化问题，申请人研究发现，可以在生产环节上增加对膜包覆位置的检测步骤，并仅对通过检测的产品进行例如膜与端盖的热熔处理。
通过这样的方法，可以避免由于包覆膜错位而导致的电池劣化，并且由于不对膜包覆不良品进行热熔处理，因此还可以提高电池生产效率，节约成本。
本申请实施例公开的电池单体的生产方法和生产系统可以但不限用于生产二次电池、一次电池、锂硫电池、钠离子电池或镁离子电池。电池可以包括箱体和电池单体，一个或多个电池单体可以容纳于箱体内。
请参照图1，图1为本申请一些实施例提供的电池单体100的分解结构示意图。电池单体100是指组成电池的最小单元。如图1所示，电池单体100包括有端盖110、壳体120、电芯130以及其它的功能性部件。
端盖110是指盖合于壳体120的开口121处以将电池单体100的内部环境隔绝于外部环境的部件。不限地，端盖110的形状可以与壳体120的形状相适应以配合壳体120。可选地，端盖110可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖110 在受挤压碰撞时就不易发生形变，使电池单体100能够具备更高的结构强度，安全性能也可以有所提高。端盖110上可以设置有如电极端子111等的功能性部件。电极端子111可以用于与电芯130电连接，以用于输出或输入电池单体100的电能。在一些实施例中，端盖110上还可以设置有用于在电池单体100的内部压力或温度达到阈值时泄放内部压力的泄压机构。端盖110的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖110的内侧还可以设置有绝缘件，绝缘件可以用于隔离壳体120内的电连接部件与端盖110，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
壳体120是用于配合端盖110以形成电池单体100的内部环境的组件，其中，形成的内部环境可以用于容纳电芯130、电解液以及其它部件。壳体120和端盖110可以是独立的部件，可以于壳体120上设置开口121，通过在开口121处使端盖110盖合开口121以形成电池单体100的内部环境。不限地，也可以使端盖110和壳体120一体化，具体地，端盖110和壳体120可以在其它部件入壳前先形成一个共同的连接面，当需要封装壳体120的内部时，再使端盖110盖合壳体120。壳体120可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。具体地，壳体120的形状可以根据电芯130的具体形状和尺寸大小来确定。壳体120的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电芯130是电池单体100中发生电化学反应的部件。壳体120内可以包含一个或多个电芯130。电芯130主要由正极片和负极片卷绕或层叠放置形成，并且通常在正极片与负极片之间设有隔膜。正极片和负极片具有活性物质的部分构成电芯的主体部，正极片和负极片不具有活性物质的部分各自构成极耳131。正极极耳和负极极耳可以共同位于主体部的一端或是分别位于主体部的两端。在电池的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳131连接电极端子以形成电流回路。
图2为本申请一些实施例提供的用于电池生产的检测方法的流程图，图3为本申请一些实施例提供的电芯130与端盖110的结构示意图。请参考图1至图3，本申请一些实施例提供一种用于电池生产的检测方法，电池包括电芯130和端盖110，检测方法包括：步骤S210，获取包括包覆有膜140的电芯130和端盖110的检测图像，其中，包覆有膜的电芯130和端盖110固定连接；步骤S220，基于检测图像，获取膜140边缘与端盖110之间的间隙值；和步骤S230，确定膜140边缘与端盖110之间的间隙值是否符合预设标准。
在一些实施例中，端盖110与电芯130通过连接片固定连接。电芯130包括相对的顶面130A和底面130B、以及位于顶面130A和底面130B之间的多个侧面130C。顶面130A和顶面130B中的其中之一(例如，130A)靠近端盖110并且与端盖110相对。膜140至少包覆在电芯130的多个侧表面130C和远离端盖110的底面130B上。理想情况下，膜140沿着靠近端盖110的方向凸出于顶面130A，用于与端盖110热熔；实际情况下，由于膜140质量轻、柔软且易带静电等原因，膜140可能未能沿着靠近端盖110的方向凸出于顶面130A。检测膜140边缘与端盖110之间的间隙值是否符合预设标准是指检测膜140的靠近端盖110的边缘与端盖110之间的间隙值，其中，预设标准可以根据不同型号的电池的生产需求设置，本申请对此不作限制。端盖110可以包括下塑胶，膜140与端盖110进行热熔可以指膜140与端盖110的下塑胶进行热熔。检测图像可以为面对电芯130的多个侧面130C之一拍摄的图像，以在检测图像中包括膜140边缘与端盖110之间的间隙。
在本申请的实施例中，通过对膜140边缘与端盖110边缘之间的间隙值进行检测，可以避免由膜140的错位而导致的电池劣化，并且检测方法的精确度高、效率高，利于在生产流程中自动化。
图4为本申请一些实施例提供的用于电池生产的检测方法的流程图。请参考图3和图4，根据本申请的一些实施例，检测方法还包括：步骤S410，响应于间隙值不符合预设标准，对膜140边缘与端盖110之间的间隙进行调整；和步骤S420，检测经调整后的膜140边缘与端盖110之间的调整间隙值是否符合预设标准。
在一些实施例中，对膜140进行调整是指对膜140在电芯130上的包覆位置进行调整，进而调整模140边缘与端盖110之间的间隙。其中，调整方法可以包括将膜140整体拆下后重新包覆或者直接对膜140的局部位置进行调整，本申请对此不作限制。在一些实施例中，间隙值的检测和膜140的调整可以在包膜工位处原位进行。
对首次包覆膜140不合格的产品进行调整，可以增加包覆不良品转变为良品的几率，从而提高电池的总产品良率，减少膜140的浪费。
根据本申请的一些实施例，电芯130包括顶面130A、底面130B以及第一侧面130C和第二侧面130D，顶面130A靠近端盖110并且与端盖110相对，第一侧面130C和第二侧面130D相邻并且位于顶面130A和底面130B之间，其中，检测图像包括第一检测图像和第二检测图像，第一检测图像包括电芯130的第一侧面130C，第二检测图像包括电芯130的第二侧面130D，基于检测图像，确定膜140边缘与端盖110之间的间隙值是 否符合预设标准包括：响应于基于第一检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准，以及基于第二检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准，确定膜140边缘与端盖110之间的间隙值符合预设标准。
基于第一检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准和基于第二检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准的步骤可以同时进行，也可以按顺序进行。
通过从多个方向检测膜140边缘与顶盖110边缘之间的间隙值，可以更准确地确定膜140的包覆质量，保证产品良率。
请参考图5，图5为图3中区域A的放大图。根据本申请的一些实施例，基于检测图像，确定膜140边缘与端盖110之间的间隙值是否符合预设标准包括：从检测图像中检测端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A；和响应于从检测图像中未检测到第二边缘线140A，确定膜140边缘与端盖110之间的间隙值不符合预设标准。
在一些情形下，未检测到第二边缘线140A可以对应于膜140缺失或破损等情况。当未检测到第二边缘线140A时，可以判定膜140的包覆不合格。在一些实施例中，响应于从检测图像中未检测到第二边缘线140A，可以将电芯排出生产线。
通过该设置，可以将膜140破损或缺失的电芯130及时排除，保证产品良率。
根据本申请的一些实施例，基于检测图像，确定膜140边缘与端盖110之间的间隙值是否符合预设标准包括：响应于识别出端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A，获取第一边缘线110A上的至少一个点在预设方向上到第二边缘线140A的距离dn(n＝1，2，…)，并将该距离dn作为间隙值，预设方向与端盖110的靠近电芯130的表面130B垂直；和基于至少一个点相应的至少一个间隙值，确定膜140边缘与端盖110之间的间隙值是否符合预设标准。
示例性地，图3中示出第一边缘线110A上的两个点到第二边缘线140A的距离d1和d2，应理解，检测位点数量越多，检测越准确。
通过在多个检测位点处检测间隙值是否合格，可以更准确地确定膜140的包覆质量，保证产品良率。
根据本申请的一些实施例，基于至少一个点相应的至少一个间隙值，确定膜140边缘与端盖110之间的间隙值是否符合预设标准包括：响应于至少一个点相应的至少一个间隙值均在预设范围内，确定膜140边缘与端盖110之间的间隙值符合预设标准。
在具体实施例中，预设范围例如可以为0.1厘米(cm)至0.5cm，至少一个点相应的至少一个间隙值均在预设范围内可以为第一边缘线110A上的至少一个点到第二边缘线140A的距离dn(n＝1，2，…)全部大于等于0.1cm且小于等于0.5cm。预设范围可以根据不同型号的电池的生产需求设置，本申请对此不作限制。
检测间隙值时设置严格的检测标准，有助于更好地把控膜140的包覆质量，提高产品良率。
根据本申请的一些实施例，至少一个点包括第一边缘线110A上的至少一个等分点。
请参考图3，示例性地，图3中示出了第一边缘线110A上的四等分点(把第一边缘线110A平均分成四等分的三个点)，至少一个点可以包括四等分点中的至少一个。
第一边缘线110A上的等分点通常与膜140与端盖110的热熔位点对应，等分点处的间隙值对热熔质量影响更大，检测该位置处的间隙值可以避免在后续膜140与端盖110的热熔处理中例如形成热熔炸点而导致电池报废。
根据本申请的一些实施例，对膜140边缘与端盖110之间的间隙值进行调整包括：根据间隙值以及膜140边缘和端盖110之间的标准间隙值，调整膜140在电芯130上的包覆位置。
在一些实施例中，调整膜140在电芯130上的包覆位置包括在各个检测位点处根据该位置处间隙值与标准间隙值的差值进行调整。举例来说，参考图5，当检测位点处间隙值小于标准间隙值时，则调整膜140使得膜140的边缘在该位置处更远离端盖110的第一边缘线110A，远离的距离为间隙值与标准间隙值的差值；当检测位点处间隙值大于标准间隙值时，则调整膜140使得膜140的边缘在该位置处更靠近端盖110的第一边缘线110A，靠近的距离为间隙值与标准间隙值的差值。
通过上述调整，有利于膜140处于可以形成良好热熔的位置，从而提高产品良率。
请参考图6，图6为本申请一些实施例的用于电池生产的检测系统600的示意性框图。本申请的一些实施例提供了一种用于电池生产的检测系统600，电池包括电芯130和端盖110，检测系统600包括：检测装置610，检测装置610包括：摄像单元611，用于拍摄包括包覆有膜140的电芯130和端盖110的检测图像，其中，包覆有膜140的电芯130和端盖110固定连接；获取单元612，用于基于检测图像，获取膜140边缘与端盖110之间的间隙值；和处理单元613，用于确定膜140边缘与端盖110之间的间隙值是否符合预设标准。
根据本申请的一些实施例，检测系统600还包括：调整装置620，与检测装置610通信连接，并且用于响应于间隙值不符合预设标准，对膜140边缘与端盖110之间的间隙进行调整，其中，检测装置610还用于检测经调整后膜140边缘与端盖110之间的调整间隙值是否符合预设标准。
请参考图7，图7为本申请一些实施例提供的调整装置620的结构示意图。在一些实施例中，调整装置620可以包括一组夹具，夹具可以夹持膜140。调整装置620可以根据检测装置610的检测结果来控制夹具调整膜140在电芯130上的包覆位置。
请参考图8，图8为本申请一些实施例提供的摄像单元611的结构示意图。在一些实施例中，检测装置610可以包括多个摄像单元611，相同的检测图像可以通过单个摄像单元611拍摄获得，或者可以通过多个摄像单元611协同拍摄获得。图8中示例性地示出了两个摄像单元611，其中，每个摄像单元611的拍摄范围由虚线示出。
根据本申请的一些实施例，参考图3和图5，包括顶面130A、底面130B以及第一侧面130C和第二侧面130D，顶面130A靠近端盖110并且与端盖110相对，第一侧面130C和第二侧面130D相邻并且位于顶面130A和底面130B之间，其中，检测图像包括第一检测图像和第二检测图像，第一检测图像包括电芯130的第一侧面130C，第二检测图像包括电芯130的第二侧面130D，并且处理单元613还用于：响应于基于第一检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准，以及基于第二检测图像确定膜140边缘与端盖110之间的间隙值符合预设标准，确定膜140边缘与端盖110之间的间隙值符合预设标准。
根据本申请的一些实施例，检测系统600还包括：检测单元614，用于从检测图像中检测端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A；和响应于从检测图像中未识别到第二边缘线140A，确定膜140边缘与端盖110之间的间隙值不符合预设标准。
根据本申请的一些实施例，处理单元613还用于：响应于识别出端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A，获取第一边缘线110A上的至少一个点在预设方向上到第二边缘线140A的距离dn(n＝1，2，…)，并将该距离dn作为间隙值，预设方向与端盖110的靠近电芯130的表面130B垂直；和基于至少一个点相应的至少一个间隙值，确定膜140边缘与端盖110之间的间隙值是否符合预设标准。
根据本申请的一些实施例，处理单元613还用于：响应于至少一个点相应的至少一个间隙值均在预设范围内，确定膜140边缘与端盖110之间的间隙值符合预设标准。
根据本申请的一些实施例，检测装置610包括多个摄像单元611，多个摄像单元611之间的相对位置能够自由调节。多个摄像单元611之间的相对位置能够自由调节，可以使间隙值的检测适用于不同型号的电池。
根据本申请的一些实施例，摄像单元611为CCD相机。
根据本申请的一些实施例，调整装置620还用于根据间隙值以及膜140边缘和端盖110之间的标准间隙值，调整膜140在电芯130上的包覆位置。
本申请的一些实施例提供了一种电池的生产方法，包括：利用本申请任一实施例的检测方法确定包覆于电芯130的膜140边缘与端盖110之间的间隙值是否符合预设标准；和响应于确定膜140边缘与端盖110之间的间隙值符合预设标准，对膜140与端盖110进行热熔处理。
通过在热熔处理前对膜140边缘与端盖110边缘之间的间隙值进行检测，可以避免由膜140的错位而导致的电池劣化，并且由于只对膜140包覆合格的产品进行热熔处理，因此还可以提高电池的生产效率，节约成本。
在一些实施例中，当响应于间隙值不符合预设标准，对膜140边缘与端盖110之间的间隙进行调整时，生产方法还包括：响应于经调整后的膜140边缘与端盖110之间的调整间隙值符合预设标准，对经调整后的膜140与端盖110进行热熔处理。
对膜140包覆不合格的产品进行调整，可以增加膜包覆不良品转变为良品的几率，从而提高电池的总产品良率，避免不必要的浪费。
在一些实施例中，生产方法还包括：响应于调整间隙值不符合预设标准，将包覆有膜140的电芯130和端盖110排出生产线。
包覆有膜140的电芯130和端盖110被排出生产线后，可以经由人工检测进一步确定膜140的包覆质量，并且可以通过人工调整合格后，再次进入生产线。
可以理解，将膜140包覆不符合标准的产品及时排出生产线，而不进行后续例如热熔处理，不仅可以提高产品良率，还可以提高生产效率。
请参考图9，图9为本申请一些实施例提供的生产系统900的示意性框图。本申请的一些实施例提供了一种电池的生产系统900，包括：本申请任一实施例的检测系统600，用于确定包覆于电芯130的膜140边缘与端盖110之间的间隙值是否符合预设标准；和 热熔装置910，与检测装置610通信连接，用于响应于确定膜140边缘与端盖110之间的间隙值符合预设标准，对膜140与端盖110进行热熔处理。
在一些实施例中，当检测系统900包括调整装置620时，热熔装置910还用于：响应于经调整后的膜140边缘与端盖110之间的调整间隙值符合预设标准，对经调整后的膜140与端盖110进行热熔处理。
在一些实施例中，生产系统900还包括：传送装置920，与检测装置610通信连接，用于响应于调整间隙值不符合预设标准，将包覆有膜140的电芯130和端盖110排出生产线。
在一些实施例中，传送装置920还用于响应于从检测图像中未检测到膜140的边缘线，将包覆有膜140的电芯130和端盖110排出生产线。
本申请的一些实施例提供了一种电子设备，包括：至少一个处理器；和与至少一个处理器通信连接的存储器，其中，存储器存储有计算机程序，计算机程序在被至少一个处理器执行时实现本申请实施例的检测方法和生产方法。
本申请的一些实施例提供了一种电池的系统，包括本申请实施例的电子设备。
本申请的一些实施例提供了一种存储有计算机程序的非瞬时计算机可读存储介质，其中，计算机程序在被处理器执行时实现本申请实施例的检测方法和生产方法。
本申请的一些实施例提供了一种计算机程序产品，包括计算机程序，其中，计算机程序在被处理器执行时实现本申请实施例的检测方法和生产方法。
请参考图10，图10为本申请一些实施例提供的用于电池生产的检测方法的流程图。在一些具体的实施例中，参考图1、图3、图5和图10，检测方法可以包括如下步骤：步骤S1010，获取包括包覆有膜140的电芯130的第一侧面130C1和端盖110的第一检测图像和包覆有膜140的电芯130的第二侧面130C2的第二检测图；步骤S1020，从第一检测图像和第二检测图像中识别端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A；步骤S1030，响应于识别出第一边缘线110A和第二边缘线140A，获取第一边缘线110A上的至少一个点到第二边缘线140A的距离dn，并将距离dn作为间隙值，基于至少一个点相应的至少一个间隙值，确定膜140边缘与端盖110之间的间隙值是否符合预设标准；步骤S1040，响应于至少一个间隙值不符合预设标准，调整膜140在电芯130上的包覆位置；步骤S1050，检测经调整后膜140边缘与端盖110之间的调整间隙值是否符合预设标准。
在一些具体的实施例中，检测装置610包括四个摄像单元611。该四个摄像单元611均为CCD相机，其中两个CCD相机用于拍摄包括包覆有膜140的电芯130的第一侧面130C和端盖110的第一检测图像，另外两个CCD相机用于拍摄包括包覆有膜140的电芯130的第二侧面130D和端盖110的第二检测图像，并且四个CCD相机被配置为同时获取检测图像。调整装置620为一对夹爪(参考图7)，夹爪可以夹持膜140的边缘，并且用于根据获取单元获取的间隙值以及膜边缘和端盖之间的标准间隙值，调整膜在电芯上的包覆位置。
请参考图11，图11为本申请一些实施例提供的生产方法的流程图。在一些具体的实施例中，电池的生产方法可以包括：步骤1110，获取包括包覆有膜140的电芯130的第一侧面130C和端盖110的第一检测图像和包覆有膜140的电芯130的第二侧面130D的第二检测图；步骤S1120，从第一检测图像和第二检测图像中识别端盖110的第一边缘线110A和膜140的靠近第一边缘线110A的第二边缘线140A；步骤S1130，响应于未识别出第二边缘线140A，确定膜140边缘与端盖110之间的间隙值不符合预设标准，将包覆有膜140的电芯130和端盖110排出生产线；步骤S1140，响应于识别出第一边缘线110A和第二边缘线140A，获取第一边缘线110A上的至少一个点到第二边缘线140A的距离dn，并将距离dn作为间隙值，基于至少一个点相应的至少一个间隙值，确定膜140边缘与端盖110之间的间隙值是否符合预设标准；步骤S1150，响应于至少一个间隙值符合预设标准，对膜140与端盖110进行热熔处理；步骤S1160，响应于至少一个间隙值不符合预设标准，调整膜140在电芯130上的包覆位置；步骤S1170，检测经调整后膜140边缘与端盖110之间的调整间隙值是否符合预设标准；步骤S1180，响应于调整间隙值符合预设标准，对经调整后膜140与端盖110进行热熔处理；和步骤S1190，响应于调整间隙值不符合预设标准，将包覆有膜140的电芯130和端盖110排出生产线。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (27)

  1. 一种用于电池生产的检测方法，所述电池包括电芯和端盖，所述检测方法包括：
    获取包括包覆有膜的所述电芯和所述端盖的检测图像，其中，包覆有膜的所述电芯和所述端盖固定连接；
    基于所述检测图像，获取所述膜边缘与所述端盖之间的间隙值；和
    确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准。
  2. 根据权利要求1所述的检测方法，还包括：
    响应于所述间隙值不符合所述预设标准，对所述膜边缘与所述端盖之间的间隙进行调整；和
    检测经所述调整后膜边缘与所述端盖之间的调整间隙值是否符合所述预设标准。
  3. 根据权利要求1所述的检测方法，其中，所述电芯包括顶面、底面以及第一侧面和第二侧面，所述顶面靠近所述端盖并且与所述端盖相对，所述第一侧面和所述第二侧面相邻并且位于所述顶面和所述底面之间，
    其中，所述检测图像包括第一检测图像和第二检测图像，所述第一检测图像包括所述电芯的第一侧面，所述第二检测图像包括所述电芯的第二侧面，并且基于所述检测图像，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准包括：
    响应于基于所述第一检测图像确定所述膜边缘与所述端盖之间的间隙值符合预设标准，以及基于所述第二检测图像确定所述膜边缘与所述端盖之间的间隙值符合预设标准，确定所述膜边缘与所述端盖之间的间隙值符合预设标准。
  4. 根据权利要求1所述的检测方法，其中，基于所述检测图像，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准包括：
    从所述检测图像中识别所述端盖的第一边缘线和所述膜的靠近所述第一边缘线的第二边缘线；和
    响应于从所述检测图像中未检测到所述第二边缘线，确定所述膜边缘与所述端盖之间的间隙值不符合预设标准。
  5. 根据权利要求4所述的检测方法，其中，基于所述检测图像，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准还包括：
    响应于识别出所述端盖的第一边缘线和所述膜的靠近所述第一边缘线的第二边缘线，获取所述第一边缘线上的至少一个点在预设方向上到所述第二边缘线的距离，并将所述距离作为所述间隙值，所述预设方向与所述端盖的靠近所述电芯的表面垂直；和
    基于所述至少一个点相应的至少一个间隙值，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准。
  6. 根据权利要求5所述的检测方法，其中，基于所述至少一个点相应的至少一个间隙值，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准包括：
    响应于所述至少一个点相应的至少一个间隙值均在预设范围内，确定所述膜边缘与所述端盖之间的间隙值符合预设标准。
  7. 根据权利要求5或6所述的检测方法，其中，所述至少一个点包括所述第一边缘线上的至少一个等分点。
  8. 根据权利要求2所述的检测方法，其中，对所述膜边缘与所述端盖之间的间隙进行调整包括：
    根据所述间隙值以及所述膜边缘和所述端盖之间的标准间隙值，调整所述膜在所述电芯上的包覆位置。
  9. 一种用于电池生产的检测系统，所述电池包括电芯和端盖，所述检测系统包括检测装置，所述检测装置包括：
    摄像单元，用于拍摄包括包覆有膜的所述电芯和所述端盖的检测图像，其中，包覆有膜的所述电芯和所述端盖固定连接；
    获取单元，用于基于所述检测图像，获取所述膜边缘与所述端盖之间的间隙值；和
    处理单元，用于确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准。
  10. 根据权利要求9所述的检测系统，还包括：
    调整装置，与所述检测装置通信连接，并且用于响应于所述间隙值不符合所述预设标准，对所述膜边缘与所述端盖之间的间隙进行调整，
    其中，所述检测装置还用于检测经所述调整后的膜边缘与所述端盖之间的调整间隙值是否符合所述预设标准。
  11. 根据权利要求9所述的检测系统，其中，所述电芯包括顶面、底面以及第一侧面和第二侧面，所述顶面靠近所述端盖并且与所述端盖相对，所述第一侧面和所述第二侧面相邻并且位于所述顶面和所述底面之间，
    其中，所述检测图像包括第一检测图像和第二检测图像，所述第一检测图像包括所述电芯的第一侧面，所述第二检测图像包括所述电芯的第二侧面，并且所述处理单元还用于：
    响应于基于所述第一检测图像确定所述膜边缘与所述端盖之间的间隙值符合预设标准，以及基于所述第二检测图像确定所述膜边缘与所述端盖之间的间隙值符合预设标准，确定所述膜边缘与所述端盖之间的间隙值符合预设标准。
  12. 根据权利要求9所述的检测系统，还包括：
    检测单元，用于从所述检测图像中检测所述端盖的第一边缘线和所述膜的靠近所述第一边缘线的第二边缘线；和
    响应于从所述检测图像中未检测到所述第二边缘线，确定所述膜边缘与所述端盖之间的间隙值不符合预设标准。
  13. 根据权利要求12所述的检测系统，其中，所述处理单元还用于：
    响应于识别出所述端盖的第一边缘线和所述膜的靠近所述第一边缘线的第二边缘线，获取所述第一边缘线上的至少一个点在预设方向上到所述第二边缘线的距离，并将所述距离作为所述间隙值，所述预设方向与所述端盖的靠近所述电芯的表面垂直；和
    基于所述至少一个点相应的至少一个间隙值，确定所述膜边缘与所述端盖之间的间隙值是否符合预设标准。
  14. 根据权利要求13所述的检测系统，其中，所述处理单元还用于：
    响应于所述至少一个点相应的至少一个间隙值均在预设范围内，确定所述膜边缘与所述端盖之间的间隙值符合预设标准。
  15. 根据权利要求9-14中任一项所述的检测系统，其中，所述检测装置包括多个所述摄像单元。
  16. 根据权利要求9-14中任一项所述的检测系统，其中，所述摄像单元为CCD相机。
  17. 根据权利要求10-16中任一项所述的检测系统，其中，所述调整装置还用于根据所述间隙值以及所述膜边缘和所述端盖之间的标准间隙值，调整所述膜在所述电芯上的包覆位置。
  18. 一种电池的生产方法，所述生产方法包括：
    利用如权利要求1-8中任一项所述的检测方法确定包覆于电芯的膜边缘与端盖之间的间隙值是否符合预设标准；和
    响应于确定所述膜边缘与所述端盖之间的间隙值符合预设标准，对所述膜与所述端盖进行热熔处理。
  19. 根据权利要求18所述的生产方法，其中，当响应于所述间隙值不符合所述预设标准，对所述膜边缘与所述端盖之间的间隙进行调整时，所述生产方法还包括：
    响应于经调整后的膜边缘与所述端盖之间的调整间隙值符合所述预设标准，对经所述调整后的膜与所述端盖进行热熔处理。
  20. 根据权利要求19所述的生产方法，所述生产方法还包括：
    响应于所述调整间隙值不符合所述预设标准，将包覆有所述膜的电芯和所述端盖排出生产线。
  21. 一种电池的生产系统，所述生产系统包括：
    如权利要求9-17中任一项所述的检测系统，用于确定包覆于电芯的膜边缘与端盖之间的间隙值是否符合预设标准；和
    热熔装置，与检测装置通信连接，用于响应于确定膜边缘与端盖之间的间隙值符合预设标准，对所述膜与所述端盖进行热熔处理。
  22. 根据权利要求21所述的生产系统，其中，当所述检测系统包括调整装置时，所述热熔装置还用于：
    响应于经调整后的膜边缘与所述端盖之间的调整间隙值符合所述预设标准，对经所述调整后的膜与所述端盖进行热熔处理。
  23. 根据权利要求22所述的生产系统，还包括：
    传送装置，与所述检测装置通信连接，用于响应于所述调整间隙值不符合所述预设标准，将包覆有所述膜的电芯和所述端盖排出生产线。
  24. 一种电子设备，包括：
    至少一个处理器；和
    与所述至少一个处理器通信连接的存储器，其中，
    所述存储器存储有计算机程序，所述计算机程序在被所述至少一个处理器执行时实现根据权利要求1-8中任一项所述的检测方法或者根据权利要求18-20中任一项所述的生产方法。
  25. 一种电池的系统，包括权利要求24所述的电子设备。
  26. 一种存储有计算机程序的非瞬时计算机可读存储介质，其中，所述计算机程序在被处理器执行时实现根据权利要求1-8中任一项所述的检测方法或者根据权利要求18-20中任一项所述的生产方法。
  27. 一种计算机程序产品，包括计算机程序，其中，所述计算机程序在被处理器执行时实现根据权利要求1-8中任一项所述的检测方法或者根据权利要求18-20中任一项所述的生产方法。
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