WO2021258576A1 - 电池串、电池组件、电池串的制造装置及制造方法 - Google Patents

电池串、电池组件、电池串的制造装置及制造方法 Download PDF

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Publication number
WO2021258576A1
WO2021258576A1 PCT/CN2020/119135 CN2020119135W WO2021258576A1 WO 2021258576 A1 WO2021258576 A1 WO 2021258576A1 CN 2020119135 W CN2020119135 W CN 2020119135W WO 2021258576 A1 WO2021258576 A1 WO 2021258576A1
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WO
WIPO (PCT)
Prior art keywords
battery
sheet
overlapping area
gasket
slice
Prior art date
Application number
PCT/CN2020/119135
Other languages
English (en)
French (fr)
Inventor
陈道远
卢林
叶玉秋
周艳方
Original Assignee
晶澳太阳能有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202021198743.1U external-priority patent/CN213383436U/zh
Priority claimed from CN202010591389.7A external-priority patent/CN111755549B/zh
Priority claimed from CN202010680470.2A external-priority patent/CN111864012B/zh
Application filed by 晶澳太阳能有限公司 filed Critical 晶澳太阳能有限公司
Priority to US17/778,817 priority Critical patent/US20220406951A1/en
Priority to CN202080102426.1A priority patent/CN115917762A/zh
Priority to EP20941807.8A priority patent/EP4047670A4/en
Publication of WO2021258576A1 publication Critical patent/WO2021258576A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876—Particular processes or apparatus for batch treatment of the devices
    • H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the embodiments of the present disclosure relate to a battery string, a battery assembly, a manufacturing device and a manufacturing method of the battery string, and a manufacturing device and manufacturing method of the battery assembly.
  • MBB stitch welding technology is based on the current welding technology, the battery slices are overlapped and welded to each other, so that the battery slices form a battery string.
  • the edges of the two battery slices are overlapped and welded together by a welding tape, and the two battery slices are overlapped and welded together.
  • the solder ribbons in the overlap area of the cells are flattened. Although this reduces the stress in the overlap area to a certain extent, there is still point support for the cells by the solder ribbon, which will still cause obvious cracks in the overlap area of the battery.
  • the embodiments of the present disclosure relate to a battery string, a battery assembly, a manufacturing device and a manufacturing method of the battery string, and a manufacturing device and manufacturing method of the battery assembly.
  • an embodiment of the present disclosure provides a battery string, including: at least two battery slices, the at least two battery slices include adjacent first battery slices and second battery slices, wherein the at least two battery slices
  • Each of the solar cells is provided with grid lines on the front and back sides, and the grid lines on the front side of the first battery plate of the first battery plate and the grid lines on the back side of the second battery plate are connected by soldering tape.
  • the first battery sheet and the second battery sheet have an overlapping area, and the overlapping area is provided with a cushioning pad covering at least one side surface of the solder ribbon in the overlapping area, and the cushioning pad is preset
  • the gasket is formed in the overlapping area and melted at a high temperature.
  • the spacer is in the shape of a strip or a belt.
  • the gasket includes an ethylene-vinyl acetate copolymer, a polyolefin elastomer, a composite material including an ethylene-vinyl acetate copolymer and a polyolefin elastomer, or polyethylene.
  • embodiments of the present disclosure provide a battery assembly according to any of the battery strings described in the first aspect.
  • an embodiment of the present disclosure provides a battery string manufacturing device configured to provide a buffer pad to the battery string to be processed, wherein the battery string to be processed includes at least two battery pieces, and the at least two battery pieces It includes adjacent first and second battery slices, each of the at least two adjacent battery slices is provided with grid lines on the front and back sides, and the grid lines on the front side of the first battery slice and the first battery slice The grid lines on the reverse side of the two battery pieces are connected by soldering tape, the first battery piece and the second battery piece have overlapping areas, wherein the manufacturing device includes: a battery piece separation mechanism configured to make the to-be-processed The adjacent first cell and second cell of the battery string move relative to each other, so that the first cell and the second cell in the overlapping area are perpendicular to the first cell. Separate in the direction of the main surface in order to lay the gasket into the overlapping area.
  • the relative movement of the first battery piece and the second battery piece includes relative rotation, relative translation, or a combination of relative rotation and relative translation.
  • the battery sheet separation mechanism includes: a battery sheet conveying device including at least two adjacently arranged first and second conveying parts, and There is an included angle greater than 90 degrees and less than 180 degrees between a conveying part and the conveying surface of the second conveying part for conveying the battery slices, so that the battery string to be processed runs along the at least two conveying parts
  • the conveying surface travels from the second conveying part to the first conveying part, and most of the first battery slice is located in the first conveying part while the second battery slice is not located in the first conveying part
  • the first battery piece and the second battery piece in the overlapping area are relatively rotated and separated in a direction perpendicular to the main surface of the first battery piece, so as to lay the gasket on all the In the overlapping area.
  • the included angle between the conveying surfaces of the first conveying part and the second conveying part is greater than or equal to 135 degrees and less than 180 degrees.
  • the angle between the conveying surfaces of the first conveying part and the second conveying part is equal to 135 degrees.
  • the battery sheet separation mechanism includes: a battery sheet moving device configured to transport the battery string to be processed for gasket laying; and a battery sheet picking device, It includes at least two pick-up groups, each of the pick-up groups includes one or more pick-ups, each of the pick-up groups is configured to pick up a battery slice, and the at least two pick-up groups are configured to drive adjacent
  • the movement of the battery slice causes the first battery slice and the second battery slice in the overlapping area to move away in a third predetermined direction, so that the first battery slice and the second battery slice are in Separate in a direction perpendicular to the main surface of the first battery sheet so as to lay the gasket into the overlapping area, and the third preset direction is perpendicular to the main surface of the first battery sheet or is
  • the vertical direction of the main surface has an included angle greater than 0 degrees and less than 90 degrees.
  • the pick-up member is a suction member, and the battery sheet pick-up device and the battery string to be processed are relatively movable.
  • the third predetermined direction and the vertical direction of the main surface have an included angle greater than 0 degree and less than 45 degrees.
  • each of the at least two picking component groups picks up a battery slice and drives the battery slice to move along the third preset direction.
  • the moving distance of the battery sheet on the upper side is greater than the moving distance of the battery sheet on the lower side.
  • the battery sheet separation mechanism includes: a displacement mechanism, a first transmission mechanism, and a second transmission mechanism, and the displacement mechanism is used to drive the first transmission mechanism and/ Or the second conveying mechanism is displaced; when laying, the battery string is conveyed from the second conveying mechanism to the first conveying mechanism, and the battery string includes adjacent first and second battery slices, the Grid lines are provided on the front and back sides of the first cell and the second cell, and the grid lines on the front side of the first cell and the grid lines on the back of the second cell are connected by welding ribbons.
  • the first battery slice and the second battery slice have an overlapping area; when the first battery slice is located on the first conveying mechanism, at least a part of the second battery slice is located on the second
  • the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so that the first battery slice and the second battery slice in the overlapping area are perpendicular to The main surface of the first cell sheet is separated in the direction of the main surface so as to lay the gasket into the overlapping area.
  • the manufacturing apparatus of the battery string according to the embodiment of the present disclosure further includes: a heating mechanism configured to heat at least a part of the gasket to melt the gasket after the gasket is laid in the overlapping area And connect the first battery slice and/or the second battery slice.
  • the first conveying mechanism and the second conveying mechanism include a conveyor belt, the battery is arranged in series on the conveyor belt, and the conveyor belt drives the battery The string is displaced to transfer the battery string.
  • the displacement mechanism is used to drive the displacement of the first transmission mechanism, and the first transmission mechanism and the second transmission mechanism are rotatably connected;
  • the first transfer mechanism and the second transfer mechanism have a first preset angle with the horizontal plane;
  • the displacement mechanism converts the angle between the first transfer mechanism and the horizontal plane into a second preset An angle is set to separate the first cell and the second cell in the overlapping area.
  • the value range of the first preset angle is 5 degrees to 45 degrees.
  • the displacement mechanism is used to drive the displacement of the first conveying mechanism and the second conveying mechanism, and when the first cell is located in the first conveying mechanism
  • the displacement mechanism causes the first transfer mechanism and the second transfer mechanism to move away from each other in a first preset direction, so that The first battery slice and the second battery slice in the overlapping area are separated.
  • the first preset direction is perpendicular to the main surface of the first battery sheet or has a direction perpendicular to the main surface of greater than 0 degrees and less than 90 degrees. Angle of degrees.
  • the manufacturing apparatus of the battery string further includes: a gasket laying mechanism configured to separate the gasket when the first battery sheet and the second battery sheet in the overlapping area are separated Sheet is laid into the overlapping area; wherein the gasket laying mechanism includes: a feeding mechanism configured to transport the gasket in a second preset direction; When the length of the gasket meets a preset requirement, the gasket is cut; a traction mechanism is used to lay the cut gasket to the overlapping area.
  • the first conveying mechanism and the second conveying mechanism include a suction structure for fixing the battery string to the The first transmission mechanism and the second transmission mechanism.
  • the manufacturing apparatus of the battery string further includes: a laminating device configured to laminate the battery string so that the gasket is melted and formed to cover the welding area located in the overlapped area.
  • the cushioning pad on at least one side of the belt wherein the laminating device comprises: a laminate plate, the laminate plate is provided with a slot, when laminating, the laminate plate is provided on the first battery sheet and the Above the second battery sheet, the slot is provided above the overlapping area.
  • the width of the slot is greater than the width of the overlapping area
  • the slot includes a first end and a second end that are arranged oppositely, and the second The battery sheet is stacked above the first battery sheet; when laminated, the first end is located above the second battery sheet, and the second end is located above the first battery sheet, so The distance between the first end and the overlapping area is greater than the distance between the second end and the overlapping area.
  • the slot penetrates the laminate plate.
  • the number of the slots is at least two, and the slots are arranged in at least two rows along the first direction, and the rows include adjacent rows in the second direction.
  • the position of the slot in the first row and the position of the slot in the second row are asymmetrical, and the first direction is perpendicular to the second row. direction.
  • the width of the slot is 2 cm ⁇ 1 cm.
  • the distance between the second end and the overlapping area is 8mm ⁇ 7mm.
  • the depth of the groove is not less than 0.25 mm.
  • the laminate is made of a soft material.
  • the laminate is made of a high temperature resistant material.
  • the laminating apparatus further includes: a laminated back plate for laminating, the laminated plate is connected to the laminated back plate, and the laminated plate Are provided on the first battery sheet and the second battery sheet, the slot of the laminate plate is located above the overlap area; when laminating, the laminating pressure is transmitted from the laminate back plate to the The laminating tool is transferred to the first cell sheet and the second cell sheet by the laminating tool.
  • the second predetermined direction is perpendicular to the extension direction of the solder ribbon.
  • an embodiment of the present disclosure provides a method for manufacturing a battery string as described in any of the first aspect, including: arranging a gasket and a welding tape on the front surface of the first battery sheet; stacking the second battery sheet Place on the top of the first battery piece, so that the reverse side of the second battery piece faces the front side of the first battery piece, so that the grid line on the reverse side of the second battery piece is connected to the solder Belt, and the gasket is located in the overlapping area of the first battery sheet and the second battery sheet; when the first battery sheet and the second battery sheet are laminated, the gasket melts and Forming a cushioning pad covering at least one side surface of the solder ribbon in the overlapping area, wherein arranging a gasket and the solder ribbon on the front surface of the first battery piece includes: placing on the front surface of the first battery piece Gasket; connect the grid line on the front side of the first battery piece to a solder ribbon; or connect the grid line on the front side of the first battery piece to a solder ribbon
  • the laminating the first battery sheet and the second battery sheet includes: A laminating device is arranged above the sheet, so that the laminating pressure is transmitted to the first battery sheet and the second battery sheet via the laminating device.
  • the laminating device includes a laminated board, and the laminated board is provided with Slotting, and the slotting is located above the overlapping area.
  • an embodiment of the present disclosure provides a method for manufacturing a battery string as described in any of the first aspect, including: obtaining or preparing a battery string to be processed, wherein the battery string to be processed includes at least two battery pieces, The at least two battery slices include adjacent first battery slices and second battery slices. Each of the at least two adjacent battery slices is provided with grid lines on the front and back sides.
  • the grid line and the grid line on the reverse side of the second battery piece are connected by a solder ribbon, and the first battery piece and the second battery piece have an overlapping area; the first battery in the overlapping area
  • the sheet and the second battery sheet are separated; the gasket is laid into the overlap area; the gasket is melted to form a cushion pad covering at least one side surface of the welding tape located in the overlap area.
  • the melting the gasket includes: laminating the first battery sheet and the second battery sheet, including: A laminating device is provided above the battery sheet and the second battery sheet, so that the lamination pressure is transmitted to the first battery sheet and the second battery sheet via the laminating device, and the laminating device includes a laminate board A slot is provided on the laminate board, and the slot is located above the overlapping area.
  • an embodiment of the present disclosure provides a manufacturing apparatus of a battery assembly, including: the manufacturing apparatus of any battery string according to the third aspect.
  • an embodiment of the present disclosure provides a method for manufacturing a battery assembly, including: obtaining the battery assembly by using the battery assembly manufacturing apparatus according to the sixth aspect, wherein the battery assembly includes a battery string, and The battery string includes at least two battery slices, the at least two battery slices include adjacent first battery slices and second battery slices, wherein a grid is provided on the front and back of each battery slice in the at least two battery slices Wire, the grid line on the front side of the first battery piece of the first battery piece and the grid line on the back side of the second battery piece are connected by soldering tape, the first battery piece and the second battery piece have Overlapping area, the overlapping area is provided with a cushioning pad covering at least one side surface of the welding ribbon located in the overlapping area, and the cushioning pad is composed of a gasket that is pre-arranged in the overlapping area and melted at a high temperature form.
  • Figure 1 is a schematic diagram of the structure of a battery string
  • FIG. 2 is a schematic diagram of the structure of a battery string provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a battery string when laying gaskets according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a battery string provided with a gasket provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of loading materials of an embodiment of a manufacturing device provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of laying a gasket of an embodiment of a manufacturing device provided by an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of resetting after the gasket is laid in an embodiment of the manufacturing device provided by the embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of laying a gasket of another embodiment of the manufacturing device provided by the embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of an exemplary battery sheet separation mechanism provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of another exemplary battery sheet separation mechanism provided by an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of an exemplary gasket laying process provided by an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of preheating a gasket provided by an embodiment of the present disclosure.
  • Figure 13 is a schematic structural diagram of a gasket laying mechanism provided by an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a laminate provided by an embodiment of the present disclosure.
  • 15 is a front view of the laminate provided by an embodiment of the present disclosure when the laminate is arranged above the battery string;
  • 16 is a structural schematic diagram of a laminated board provided with a through slot and a component to be laminated according to an embodiment of the present disclosure
  • FIG. 17 is a schematic structural diagram of a laminate provided by an embodiment of the present disclosure.
  • FIG. 18 is a top view of the laminate shown in FIG. 17 provided by an embodiment of the present disclosure when the laminate is provided above the battery sheet;
  • FIG. 19 is a partial enlarged view of the laminate and battery sheet shown in FIG. 18 provided by an embodiment of the present disclosure.
  • 20 is a schematic diagram of the structure of a laminate provided by an embodiment of the present disclosure.
  • FIG. 21 is a top view of the laminated board shown in FIG. 20 provided by an embodiment of the present disclosure when the laminate is provided above the battery sheet;
  • FIG. 22 is a partial enlarged view of the laminate and battery sheet shown in FIG. 21 provided by an embodiment of the present disclosure
  • FIG. 23 is a schematic diagram of a manufacturing process of a photovoltaic cell string provided by an embodiment of the present disclosure.
  • FIG. 24 is another schematic diagram of the manufacturing process of the battery string provided by the embodiment of the present disclosure.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between the two components.
  • installation should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between the two components.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between the two components.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or integrally
  • An embodiment of the present disclosure provides a battery string, the battery string includes at least two battery slices, the at least two battery slices include adjacent first battery slices and second battery slices, wherein the at least two batteries Grid lines are provided on the front and back of each cell in the sheet, and the grid lines on the front side of the first cell sheet of the first cell sheet and the grid lines on the back side of the second cell sheet are connected by soldering tape.
  • the first battery sheet and the second battery sheet have an overlapping area, and the overlapping area is provided with a cushioning pad covering at least one side surface of the solder ribbon in the overlapping area, and the cushioning pad is pre-arranged on The gasket is formed in the overlapping area and melted at a high temperature.
  • the cushioning pad By providing a cushioning pad that covers the welding tape located in the overlapping area in the overlapping area of adjacent battery pieces, and the cushioning pad is formed by a pad that is pre-arranged in the overlapping area and melted at a high temperature, so that the battery pieces are separated from each other.
  • the contact is changed from the point contact through the solder ribbon to the surface contact through the buffer pad, which avoids the contact stress caused by the point contact between the solder ribbon and the two battery pieces causing the battery piece to crack, and the structure is simple and easy to process.
  • the cushioning pad is formed of a cushion that is preliminarily disposed in the overlapping area and melted through lamination before lamination, which improves the production efficiency of the cushioning pad and does not require additional Heating process is convenient for processing.
  • an exemplary stringing device it is difficult for an exemplary stringing device to add gaskets in the two cell pieces during the processing of the stringing laminations, and it is difficult to modify the equipment, and even if it is possible to add laying pads on the exemplary stringing device
  • the chip process may also affect the manufacturing accuracy of the battery string of the string welding equipment, and it is prone to false welding and welding deviation.
  • the embodiment of the present disclosure also provides a manufacturing device for a battery string.
  • the device includes a displacement mechanism, a first transmission mechanism, and a second transmission mechanism.
  • the displacement mechanism is used to drive the first transmission mechanism and/or the second transmission mechanism.
  • the second conveying mechanism is displaced; when laying, the battery string is conveyed from the second conveying mechanism to the first conveying mechanism, and the battery string includes adjacent first and second battery slices, the first battery slice Connected with the second battery piece by a welding tape, the first battery piece and the second battery piece have an overlapping area; when the first battery piece is located on the first conveying mechanism, the second battery When at least a part of the sheet is located on the second conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so that the first battery sheet and the The second cell is separated so as to lay the gasket in the overlapping area, so that the gasket is added to the two cell during the processing of the tandem lamination, so as to prevent the cell from being damaged during the
  • a photovoltaic battery string includes at least two battery pieces, and grid lines are provided on the front and back of each of the at least two battery pieces.
  • the at least two battery slices include adjacent first battery slices 11 and second battery slices 12, and the grid lines on the front side of the adjacent battery slices 11 and the grid lines on the reverse side of the battery slice 12 are connected by a plurality of solder ribbons 20.
  • the cell 11 and the cell 12 have an overlapping area 30.
  • a buffer pad 40 is provided in the overlapping area 30.
  • the buffer pad 40 covers the solder ribbon 20 located in the overlapping area 30.
  • the gasket is formed in the overlapping area and melted at a high temperature.
  • the cushion pad 40 covers at least one side surface of the solder ribbon in the overlapping area, the solder ribbon 20 and at least one of the front surface of the cell 11 and the back face of the cell 12 are not directly exposed in the overlap area 30.
  • the cell 11 and the cell 12 are in surface contact through the buffer pad 40, which avoids the risk of the cell cracking caused by the contact stress of the point contact of the cell in the overlap area 30 with the solder ribbon 20.
  • the structure of the battery string is described by taking the first battery slice 11 and the second battery slice 12 as an example. It should be clear to those skilled in the art that for any two adjacent battery slices in the battery string, the above The structure is also applicable and will not be repeated here.
  • the cushion pad 40 is formed of a gasket 61 that is melted after being laminated.
  • the material of the gasket 61 is a non-conductive soft material, including ethylene-vinyl acetate copolymer, polyolefin elastomer, composite material containing ethylene-vinyl acetate copolymer and polyolefin elastomer, or elastomer materials such as polyethylene.
  • the width of the spacer 61 and the cushion pad 40 is not less than the width of the overlapping area 30.
  • the width of the cushion 40 is 5 mm ⁇ 3 mm.
  • the number of welding ribbons 20 is not less than two, and the length of the spacer 61 and the buffer pad 40 is not less than the distance between the two welding ribbons 20 furthest apart in the welding ribbon 20, so that the buffer pad can cover all the overlapping areas 30. Inside the welding ribbon.
  • the gasket 61 After being laminated by a laminator, due to the high temperature of the lamination process, the gasket 61 will melt and deform. The melted gasket 61 will wrap the welding ribbon 20 in the overlapping area 30, so that the welding ribbon in the overlapping area 30 20 does not make direct contact with both the cell 11 and the cell 12, and the cell 11 and the cell 12 change from the original point contact to the elastic surface contact formed by the gasket, which reduces the risk of cracking of the cell.
  • the length of the overlapping area 30 is similar to the length of the first cell 11 and the second cell 12, and the width is 0.7 mm ⁇ 0.5 mm.
  • the embodiments of the present disclosure also provide a battery assembly, including any of the battery strings described above, and the battery assembly further includes other connectors for electrically connecting the battery strings, etc.
  • the embodiments of the present disclosure will not limit this.
  • the embodiment of the present disclosure also provides a battery string manufacturing device as described in any of the above embodiments, through which the battery string manufacturing device can be located at the overlapping area 30 between the battery slices.
  • the gasket 61 is laid, and the state when the gasket 61 is laid can be seen in Fig. 3, and the battery string reset after the gasket is laid can be shown in Fig. 4.
  • the manufacturing device of the battery string is configured to provide a buffer pad to the battery string to be processed, wherein the battery string to be processed includes at least two battery slices, and the at least two battery slices include adjacent first battery slices and The second battery slice, each of the at least two adjacent battery slices is provided with grid lines on the front and back sides, the grid lines on the front side of the first battery slice and the grid lines on the back side of the second battery slice Connected by soldering tape, the first cell and the second cell have overlapping areas,
  • the manufacturing device includes:
  • the battery slice separation mechanism is configured to make the adjacent first battery slice and the second battery slice of the battery string to be processed relatively move, so that the first battery slice and the second battery slice in the overlapping area
  • the cell sheets are separated in a direction perpendicular to the main surface of the first cell sheet, so as to lay the gasket into the overlapping area.
  • the relative movement of the first battery slice and the second battery slice includes relative rotation, relative translation, or a combination of relative rotation and relative translation, as long as the two battery slices in the overlapping area can be separated to leave enough space for laying.
  • the space of the gasket will not adversely affect the soldering tape to pull the solder joints of the battery chip, for example, relative movement such as the solder joint falling off or the battery chip cracking is all right.
  • the battery string to be processed means that the battery slices have been connected by soldering tape and adjacent battery slices are connected by soldering tape. Next, it is necessary to lay a gasket on the overlapping area of two adjacent battery slices, and melt the gasket to form Battery strings for cushioning pads.
  • the cell separation mechanism includes a first transfer mechanism 50, a second transfer mechanism 60, and a displacement mechanism.
  • the displacement mechanism is used to drive the first transmission mechanism 50 and/or the second transmission mechanism 60 to move, and can drive the first transmission mechanism 50 and/or the second transmission mechanism 60 to rotate or move the first transmission mechanism 50 and/or the second transmission mechanism 50 and/or the second transmission mechanism 60.
  • the location of the transfer mechanism 60 is used to drive the first transmission mechanism 50 and/or the second transmission mechanism 60 to move, and can drive the first transmission mechanism 50 and/or the second transmission mechanism 60 to rotate or move the first transmission mechanism 50 and/or the second transmission mechanism 50 and/or the second transmission mechanism 60.
  • the displacement mechanism may include any mechanical structure or circuit that can realize the above-mentioned functions, and the present disclosure does not limit this.
  • the structures of the first transfer mechanism 50 and the second transfer mechanism 60 may be the same or different.
  • the displacement mechanism can rotate the first transfer mechanism 50 to lay the shim 61 in the overlap area 30.
  • the first transmission mechanism 50 and the second transmission mechanism 60 may include a complete conveyor belt 71 and a transmission wheel 81, a transmission wheel 82 and a transmission wheel 83.
  • the first conveying mechanism 50 includes a conveying wheel 83 and the part of the conveying belt on the right side of the conveying wheel 82 in FIG. 5
  • the second conveying mechanism 60 includes a conveying wheel 81 and the part of the conveying belt on the left side of the conveying wheel 82 in FIG. 5.
  • the angle between the first conveying mechanism 50 and the second conveying mechanism 60 and the horizontal plane is the first preset angle.
  • the first cell piece 11 and the second cell piece 12 are fed from above the transfer wheel 81 to the second transfer mechanism 60.
  • the displacement mechanism makes the angle between the first transfer mechanism 50 and the horizontal plane
  • the first cell 11 and the second cell 12 in the overlapping area 30 are separated, and the gasket laying mechanism 90 lays the gasket 61 into the overlapping area 30.
  • the first cell piece 11 and the second cell piece 12 in the overlap area 30 are separated in a direction perpendicular to the main surface of the first cell piece 11, and the main surface of the first cell piece is the surface on which the solder ribbon is provided. .
  • a support structure 87 can be provided under the transfer wheel 82, which can be used as a rotation fulcrum when the first transfer mechanism 50 rotates to a second preset angle to the horizontal plane, or it can be rotated to a second predetermined angle to the horizontal plane when the first transfer mechanism 50 rotates. Support the conveyor belt at a preset angle to prevent the conveyor belt from sagging.
  • the area range of the first predetermined angle is 5 degrees to 45 degrees, and the second predetermined angle is 0 degrees.
  • the first transfer mechanism 50 can be reset to the initial position, so as to continue to lay the gasket at the overlapping area of the second cell 12 and the subsequent cell.
  • the battery string can be laminated.
  • the displacement mechanism can translate the first transfer mechanism 50 up and down to lay the gasket 61 in the overlap area 30.
  • the first conveying mechanism 50 includes a conveying belt 73, a conveying wheel 86 and a conveying wheel 87.
  • the second conveying mechanism 60 includes a conveying belt 72, a conveying wheel 84, and a conveying wheel 85.
  • the displacement mechanism can drive the first transmission mechanism and/or the second transmission mechanism to translate up and down in the vertical direction of FIG. 8, that is, the direction perpendicular to the main surface of the battery sheet.
  • the first conveying mechanism 50 and the second conveying mechanism 60 are parallel to the horizontal plane, the first conveying mechanism 50 is in communication with the second conveying mechanism 60, and the first cell 11 and the second cell 12 are moved from the direction of the conveying wheel 84 The material is transferred to the second conveying mechanism 60, and then conveyed in the direction of the first conveying mechanism 50.
  • the displacement mechanism translates the first transfer mechanism 50 downward by preset The distance separates the first cell piece 11 and the second cell piece 12 in the overlap area, and the gasket laying mechanism 90 lays the gasket 61 into the overlap area 30.
  • the displacement mechanism translates the second transfer mechanism 60 upward by a preset distance, so that The first cell piece 11 and the second cell piece 12 in the overlap area are separated, and the gasket laying mechanism 90 lays the gasket 61 into the overlap area 30.
  • the displacement mechanism translates the second transfer mechanism 60 upward by a preset distance and shifts the first
  • the conveying mechanism 50 translates downward for a preset distance to separate the first cell piece 11 and the second cell piece 12 in the overlapping area, and the gasket laying mechanism 90 lays the gasket 61 into the overlapping area 30.
  • the displacement mechanism can also translate the second transmission mechanism 60 upward by a predetermined distance, so as to separate the first cell 11 and the second cell 12 in the overlapping area.
  • the value range of the preset distance is 1-5 mm.
  • the first transfer mechanism 50 can be reset to the initial position, so as to continue to lay the gasket at the overlapping area of the first cell 11 and the subsequent cell.
  • the battery string can be laminated.
  • first conveying mechanism and the second conveying mechanism may further include a suction structure for fixing the battery string to the first conveying mechanism and the second conveying mechanism by suction. Institutionally.
  • the battery slice separation mechanism may include: a battery slice conveying device 200, including at least two adjacently arranged first conveying parts 201 and second conveying parts 202, the first conveying There is an included angle A greater than 90 degrees and less than 180 degrees between the conveying surface 2011 of the part 201 for conveying the battery slices and the conveying surface 2021 of the second conveying part 202 for conveying the battery slices.
  • the processed battery string 300 travels from the second conveying section 202 to the first conveying section 201 along the conveying surfaces of the at least two conveying sections, and most of the first battery sheet 11 is located in the first conveying section.
  • Transfer portion 201 and most of the second battery sheet 12 is located on the second transfer portion 202 and the second battery sheet 12 is not located on the first transfer portion 201, the overlap area
  • the first cell 11 and the second cell 12 rotate relative to each other due to the included angle between the two conveying surfaces, so as to separate in a direction perpendicular to the main surface of the second cell 12 to separate
  • the gasket is laid into the overlapping area.
  • the included angle between the conveying surfaces of the first conveying portion and the second conveying portion is greater than or equal to 135 degrees and less than 180 degrees.
  • the angle between the conveying surfaces of the first conveying part and the second conveying part is equal to 135 degrees.
  • the first conveying part 201 is arranged in the downstream direction of the second conveying part 202, the second conveying part 202 may be arranged horizontally, and the first conveying part 201 may have a clamping angle of less than or equal to 90 degrees and greater than 0 degrees with respect to the horizontal direction.
  • the angle for example, is less than or equal to 45 degrees and greater than 0 degrees.
  • the conveying surface 2021 of the second conveying portion 202 is arranged horizontally, and the conveying surface 2011 of the first conveying portion 201 has an included angle greater than or equal to 90 degrees and less than 0 degrees with respect to the horizontal direction, for example, less than or equal to 45 degrees and greater than 0 degrees.
  • a conveyor belt may be supported on the conveying surfaces of the two conveying parts, and the conveyor belt may be driven by a driving device to drive the battery string to move, and the conveying belt may be provided with an adsorption device to fix the battery string on the transmission belt.
  • the transmission belt brings the first battery piece to the junction of the first transmission part and the second transmission part, because the first transmission part is inclined, the conveyor belt is also inclined downward, and the front end of the first battery piece may be It is suspended without the support of the conveyor belt.
  • the first battery sheet will fall on the first conveyor part that is inclinedly arranged downstream, that is, on the transmission belt on it.
  • the transmission belt can be stopped, and the battery slices can also stop moving, and then the gasket laying operation can be carried out by manipulators, manuals, etc.
  • the gasket is laid, the transmission belt continues to drive the batteries in series.
  • the second battery piece also falls on the first conveying part, the second battery piece and the adjacent battery piece on the rear side can be exchanged. Laying of gaskets between.
  • the transmission belt may not stop.
  • the cell conveying device 200 shown in FIG. 9 also includes several transmission wheels, which does not constitute a limitation to the present application. Those skilled in the art can make changes as needed, as long as the first conveying part 201 can be realized. It is only necessary to have an angle with the conveying surface of the second conveying part 202 and to be able to drive the battery string to move.
  • the cell conveying device provided here does not need to be provided with a mechanism to make the two conveying parts move relatively
  • the two adjacent battery slices can be separated in the overlapping area, so that the structure is simple, no additional moving structure and time are needed, and the work efficiency can be further improved and the cost can be saved.
  • the battery sheet separation mechanism may further include: a battery sheet moving device 400 configured to transport the battery string 300 to be processed for gasket laying;
  • the pick-up device 500 includes at least two pick-up groups, each of the pick-up groups includes one or more pick-ups 501, each of the pick-up groups is configured to pick up a battery slice, and the at least two pick-up groups It is configured to drive the adjacent battery slices to move, so that the first battery slice and the second battery slice in the overlapping area move away from each other in a third predetermined direction, so that the first battery slice and the second battery slice
  • the second battery sheet is separated in a direction perpendicular to the main surface of the first battery sheet so as to lay the gasket into the overlapping area, wherein the third predetermined direction is perpendicular to the first battery sheet.
  • the main surface or the perpendicular direction to the main surface has an included angle greater than 0 degrees and less than 90 degrees.
  • the arrow B shows the arrow B shows the arrow B.
  • Figure 10(a) shows the state when the battery chip picking device does not pick up the battery chip.
  • the battery chip shown in the figure does not seem to be placed flat on the battery chip moving device, but the actual During the process, the cells are very thin, and due to the overlapping area between adjacent cells, except for the cell in the bottom layer, the other cells are slightly inclined because they are cushioned by the bottom cell.
  • the inclination of the battery slices is very thin and can be ignored. In this case, it can be approximately considered that the battery slices are laid flat on the battery slice moving device, while the battery slices in Figure 10 (a) and (b) are shown as relatively small. Therefore, this inclination is exaggerated. In practice, this inclination is negligible.
  • FIG. 10 is used as an example for description, and other embodiments will not be specifically described.
  • the arrow B shows the vertical direction of the main surface
  • the arrow C shows the extension direction of the main surface.
  • Fig. 10(b) shows the state where the battery slices are picked up by the battery slice pickup device. As shown in the figure, by the pickup device, adjacent battery slices are separated in the overlapping area, so that the gasket laying operation can be performed.
  • the pickup member is a suction member 501, and the battery sheet pickup device 500 and the battery string 300 to be processed are relatively movable.
  • FIG. 11 shows an exemplary operation flow chart, showing the laying process of the gasket from top to bottom along the arrow.
  • the first picture is the initial state of the battery string to be processed. There is an overlapping area between the battery slices.
  • the adjacent battery slices are far away in the third preset direction, so as to provide space for laying gaskets.
  • the third picture The gasket laying mechanism uses tools such as a manipulator to lay the gasket 61 on the overlapping area of adjacent battery slices.
  • the battery slice with the gasket laid is driven by the battery slice pickup device to reset to the starting position. Then, you can lay the gaskets of the four battery slices below. At this time, the battery slice moving device can drive the batteries to the operating position of the battery slice picking device, or the battery slices can be moved. The picking device makes it possible to pick up and lay the pads on the following four battery sheets.
  • the cell picking device can also include a picking set equal to the number of cells in the battery string to be processed, so that all the cells can be picked up at one time, so that the entire gasket can be completed without moving the battery string or the cell picking device
  • the laying work saves time and improves efficiency.
  • the third preset direction may have an included angle greater than 0 degrees and less than 90 degrees with the vertical direction B of the main surface.
  • the confrontation between two adjacent cells occurs
  • the movement can be a combination of rotation and translation, so as to prevent defects such as falling off of the solder joints of the battery sheet and chipping of the battery sheet.
  • each of the at least two picking component groups picks up a battery slice and drives the battery slice to move in the third predetermined direction, in a direction away from the manufacturing device along the third predetermined direction
  • the moving distance of the battery piece on the upper side is greater than the moving distance of the battery piece on the lower side, so that adjacent battery pieces are separated.
  • the battery slice on the lower side may not move, while the battery slice on the upper side moves, etc.
  • This application does not limit this, as long as It suffices that adjacent cells can be separated in the overlapping area.
  • At least two cell picking groups included in the cell picking device can be set together in the same structure, but controlled by different control devices, and move independently of each other; or they can be set in different structures independently of each other. Controlled and independent movement.
  • the manufacturing device may further include: a heating mechanism configured to heat at least a part of the gasket after the gasket is laid in the overlapping area to melt the gasket and connect the first battery Sheet and/or the second battery sheet.
  • a heating mechanism configured to heat at least a part of the gasket after the gasket is laid in the overlapping area to melt the gasket and connect the first battery Sheet and/or the second battery sheet.
  • Figure 12 shows a heating mechanism 110.
  • the heating mechanism 110 can be used to partially perform the gasket. Heating causes the gasket to partially melt and bond with the battery sheet, that is, the gasket is pre-fixed to the battery sheet.
  • the heating mechanism 110 can preheat the two ends and the center of the gasket to partially melt and connect with the first cell 11 and/or the second cell 12 to prevent the gasket from being Displacement occurs during subsequent processing or movement.
  • the heating mechanism may include a heating device such as a soldering iron tip, infrared laser or hot air.
  • the manufacturing apparatus may further include: a gasket laying mechanism configured to lay the gasket to the overlap area when the first cell sheet and the second cell sheet in the overlap area are separated In; wherein the gasket laying mechanism includes: a feeding mechanism configured to transfer the gasket to a second preset direction; a cutting mechanism, the cutting mechanism is used when the length of the transferred gasket meets the preset When required, cut the gasket; a traction mechanism, which is used to lay the cut gasket to the overlap area.
  • a gasket laying mechanism configured to lay the gasket to the overlap area when the first cell sheet and the second cell sheet in the overlap area are separated In; wherein the gasket laying mechanism includes: a feeding mechanism configured to transfer the gasket to a second preset direction; a cutting mechanism, the cutting mechanism is used when the length of the transferred gasket meets the preset When required, cut the gasket; a traction mechanism, which is used to lay the cut gasket to the overlap area.
  • the gasket laying mechanism 90 may include a feeding tray 91, a feeding roller 92, a cutting knife 93 and a traction jaw 94.
  • Figure 13 shows the process of using the equipment to lay the gasket after the solder tape is pre-laid on the cell. The process includes:
  • the feed roller 92 drives the gasket 61 to move in the direction of the battery sheet 95;
  • the cutting knife 93 cuts the gasket 61, and the pulling jaw 94 drags the cut gasket 61 to the preset position on the battery sheet 95.
  • the device can also be used to first lay the mat 61 on the battery sheet 11, and then lay the welding tape 20 above the mat 61, which is not limited in this embodiment.
  • gasket laying can also be used to implement gasket laying, such as using a robotic arm with a suction nozzle to suck up the gasket and then place it in a preset position on the battery slice, which is not limited in this application.
  • the second predetermined direction which is the feeding direction of the gasket 61, is perpendicular to the extending direction of the welding ribbon 20, that is, perpendicular to the feeding direction of the welding ribbon 20.
  • the manufacturing apparatus may further include: a laminating device configured to laminate the battery string so that the gasket melts and forms a buffer covering at least one side surface of the solder tape located in the overlapping area A pad, wherein the laminating device comprises: a laminate board, the laminate board is provided with a slot, when laminating, the laminate board is provided above the first battery sheet and the second battery sheet, so The slot is provided above the overlapping area.
  • a laminating device configured to laminate the battery string so that the gasket melts and forms a buffer covering at least one side surface of the solder tape located in the overlapping area A pad
  • the laminating device comprises: a laminate board, the laminate board is provided with a slot, when laminating, the laminate board is provided above the first battery sheet and the second battery sheet, so The slot is provided above the overlapping area.
  • the battery string can be put into a laminating device for laminating.
  • the gasket 61 will melt due to the temperature and pressure of the lamination.
  • the gasket 61 may flow in the direction of the battery sheet located below of the two overlapping battery sheets with the help of the laminate 100 as shown in FIG. 14 to form a cushion pad covering the welding tape located in the overlapping area .
  • the laminating device proposed in the present application includes a laminate board 100, and the laminate board 100 is provided with a slot 101, and the laminating device is used to transmit the laminating pressure generated by the laminator to the first cell 11 And the second battery slice 12, the battery slices have an overlapping area 30 therebetween.
  • the laminate is provided on the first cell 11 and the second cell 12, and the slot 101 is located above the overlapping area 30.
  • the slot 101 may be closer to the second battery sheet 12 located above, so as to oppose the second battery sheet located above.
  • the sheet 12 plays a supporting role.
  • the laminated board 100 is a front view when the first cell 11 and the second cell 12 are arranged.
  • the slot 101 includes a first end 102 and a second end 103 that are arranged oppositely.
  • the second cell 12 is stacked on top of the first cell 11, the first end 102 of the slot 101 is located above the second cell 12, and the second end 103 is located on the top of the first cell 11. Above, the distance between the first end 102 and the overlapping area 30 is greater than the distance between the second end 103 and the overlapping area 30.
  • arranging the slot 101 closer to the second cell piece 12 can help the lamination
  • the mat strips melted by the heat and pressure cover the overlapping area 30 and flow in the direction of the second cell 12 to further reduce the risk of cracking or chipping during the process of cell lamination.
  • the length of the slot 101 should not be less than the length of the battery 11 and the battery 12, and the width of the slot 101 should not be less than the width of the overlapping area 30 to ensure that the slot can cover the overlapping area.
  • the width of the slot 101 is 2cm ⁇ 1cm.
  • the thickness of the laminate 100 can be set to 0.5 mm ⁇ 0.3 mm, as shown in Figure 16. As shown, a slot 101 penetrating through the laminate 100 is provided on the laminate, so that the depth of the slot 101 is the same as the thickness of the laminate.
  • the distance between the second end and the overlapping area is 8mm ⁇ 7mm.
  • the depth of the groove 101 is not less than the thickness of the overlapping area 30 of the battery sheet 11 and the battery sheet 12.
  • the depth of the groove is not less than 0.25 mm.
  • the laminate 100 may be a flexible material.
  • the soft material includes silicone, rubber, nylon, polyester resin, and polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the laminate 100 may also be made of light metal materials including aluminum.
  • the laminate 100 can also be made of a combination of metal and soft materials, such as connecting a rubber plate to an aluminum plate, opening a slot 101 on the rubber plate, and fixing the aluminum plate to a laminator.
  • the laminate board 100 may be made of a high temperature resistant material.
  • a plurality of slots 101 may be provided on the laminate to laminate multiple cells at the same time.
  • the battery sheet can be placed under the laminate in the structure shown in FIG. 18.
  • the two adjacent battery slices in the vertical direction of FIG. 18 have overlapping areas.
  • the slot 101 is symmetrical, that is, as shown in FIG. 19, when laminated, the opposite ends of the slot 101 are respectively located above the two overlapping battery sheets, and the two ends are in the overlap area. The distances are equal.
  • the slot 101 covers the upper part of each overlapping area, so as to buffer the pressure applied to the battery slices and avoid the battery slices from cracking or chipping due to the pressure applied by the laminator.
  • a plurality of asymmetrical grooves 101 may be provided on the laminate plate. As shown in FIG. 20, a plurality of asymmetrical slots 101 are formed on the laminate, and each slot 101 has a first end and a second end opposite to each other.
  • the battery pieces When laminated, the battery pieces are arranged so that there is an overlap area between two adjacent battery pieces in the vertical direction as shown in FIG. 101, and are arranged in multiple columns along the vertical direction in FIG. 21 and FIG. 22 , And set up a laminating device as shown in Figure 20 above the battery sheet.
  • the plurality of columns include first and second columns that are adjacent in the lateral direction of FIGS. 21 and 22.
  • the battery slices located above in the vertical direction of FIGS. 21 and 22 are stacked on top of the battery slices located below, and in the second column, in the vertical direction of FIGS. 21 and 22
  • the battery slices located below are stacked on top of the battery slices located above.
  • slots 101 corresponding to each overlapping area are provided on the laminate.
  • the slots 101 are arranged in at least two rows along the first direction, and the rows are included in the second row.
  • the first row and the second row adjacent in the direction, the position of the slot 101 in the first row is asymmetrical to the position of the slot 101 in the second row, the first direction Perpendicular to the second direction.
  • the laminated board 100 is provided with a slot having a width not less than the width of the overlapping area 30.
  • the laminated board 100 is placed on the battery string and the slot is aligned with the overlapping area 30 of the battery string.
  • the pressure exerted by the laminating device is transmitted to the battery string through the laminate.
  • the laminate buffers the pressure exerted by the laminating device, avoiding that the part of the two battery sheets located in the overlapping area is directly subjected to the application of the laminator. Cracking or chipping occurs due to pressure.
  • the laminating device may also include a laminated back sheet for laminating, the laminated sheet is connected to the laminated back sheet, and the laminated sheet is provided on the first battery sheet and the second battery sheet , The slot of the laminate is located above the overlap area; when laminating, the lamination pressure is transferred from the laminate back sheet to the laminate, and from the laminate to the first The battery slice and the second battery slice.
  • the embodiments of the present disclosure also provide a battery assembly manufacturing device, which is used to manufacture the battery assembly described in any of the above embodiments, including the battery string manufacturing device described in any of the above.
  • the embodiment of the present disclosure also provides a method for manufacturing a battery string as described above, including:
  • the wire is connected to the welding ribbon, and the gasket is located in the overlapping area of the first battery piece and the second battery piece;
  • the gasket melts and forms a buffer pad covering at least one side surface of the solder ribbon in the overlapping area
  • arranging a gasket and a welding ribbon on the front surface of the first cell includes:
  • a spacer is placed on the ribbon.
  • the laminating the first battery sheet and the second battery sheet includes: arranging a laminating device above the first battery sheet and the second battery sheet so that the laminating pressure passes through the The laminating device is transferred to the first cell sheet and the second cell sheet, the laminating device includes a laminate plate, the laminate plate is provided with a slot, and the slot is located above the overlapping area .
  • the solder ribbon 20 can be connected to the upper surface of the battery sheet 11 in advance, and then the spacer 61 is placed at the preset position, and finally the battery sheet 12 is placed on the spacer. 61, and make the cell 11 and the cell 12 parallel and the width of the overlapping area is a preset width.
  • the battery string can be placed in a laminator for laminating.
  • the gasket 61 will melt due to the temperature and pressure of the lamination.
  • the gasket 61 may flow in the direction of the battery sheet located below of the two overlapping battery sheets with the help of the laminate 100 as shown in FIG.
  • the length of the overlapping area 30 is approximately the length of the battery slice 11 and the battery slice 12, and the width is 0.7 mm ⁇ 0.5 mm.
  • a spacer 61 can also be pre-set at a preset position on the upper surface of the battery sheet 11, and then a welding tape 20 is set on the spacer 61, and finally the battery
  • the sheet 12 is placed above the battery sheet 11 so that the edges of the battery sheet 11 and the battery sheet 12 have an overlapping area 30.
  • the battery string can be placed in a laminator for lamination.
  • the gasket 61 will melt due to the temperature and pressure of the lamination, forming a covering The cushion pad 40 of the solder ribbon 20 in the overlap area 30.
  • the embodiments of the present disclosure also provide an exemplary manufacturing method of the battery string as described above, including:
  • the battery string to be processed includes at least two battery slices, the at least two battery slices include adjacent first battery slices and second battery slices, and the at least two adjacent battery slices
  • Each of the solar cells is provided with grid lines on the front and back sides.
  • the grid lines on the front side of the first battery plate and the grid lines on the back side of the second battery plate are connected by soldering tape.
  • the first battery plate and The second battery sheet has an overlapping area;
  • the melting of the gasket includes: laminating the first battery sheet and the second battery sheet, including: setting a laminate on the first battery sheet and the second battery sheet.
  • melting the gasket can also adopt any of the methods described above, for example, using a soldering iron tip, infrared laser or hot air heating method, etc.
  • the embodiments of the present disclosure are not limited to this, and different gasket materials can be used. Method of melting.
  • the adjacent battery pieces in the overlapping area are separated, the gasket is laid, and the gasket is melted so that the gasket is formed to cover at least one side surface of the welding ribbon located in the overlapping area
  • the cushion pad can further save process time, further improve efficiency, and improve product quality.
  • the embodiment of the present disclosure also provides a method for manufacturing a battery assembly, including: obtaining the battery assembly by using the battery assembly manufacturing apparatus according to any of the above, wherein the battery assembly includes a battery string, and the battery string includes At least two battery slices, the at least two battery slices include adjacent first battery slices and second battery slices, wherein grid lines are provided on the front and back of each battery slice in the at least two battery slices, the The grid lines on the front side of the first battery sheet and the grid lines on the back side of the second battery sheet are connected by soldering tape, the first battery sheet and the second battery sheet have overlapping areas, so The overlapping area is provided with a cushioning pad covering at least one side surface of the welding tape located in the overlapping area, and the cushioning pad is formed of a pad that is pre-arranged in the overlapping area and melted at a high temperature.
  • the embodiment of the present disclosure provides a battery string, by providing a buffer pad covering at least one side surface of the solder ribbon in the overlapping area in the overlapping area of adjacent battery pieces, and the buffer pad is pre-arranged in the overlapping area
  • the inner and high-temperature melted gaskets are formed so that the solder ribbon will not directly contact the first cell and the second cell in the overlapping area, and the contact between the cells is changed from the point contact through the solder ribbon to the buffer
  • the surface contact of the pad avoids the contact stress caused by the point contact of the solder ribbon and the two battery pieces from causing the battery piece to crack, and the structure is simple and easy to process.
  • the cushioning pad is formed of a cushion that is preliminarily disposed in the overlapping area and melted through lamination before lamination, which improves the production efficiency of the cushioning pad and does not require additional Heating process is convenient for processing.
  • the embodiments of the present disclosure also provide a photovoltaic module, including the photovoltaic battery string as described in the above embodiments.
  • a photovoltaic module including the photovoltaic battery string as described in the above embodiments.
  • the embodiment of the present disclosure also provides a manufacturing device for a battery string.
  • the device includes a displacement mechanism, a first transmission mechanism, and a second transmission mechanism.
  • the displacement mechanism is used to drive the first transmission mechanism and/or the second transmission mechanism.
  • the second conveying mechanism is displaced; when laying, the battery string is conveyed from the second conveying mechanism to the first conveying mechanism, and the battery string includes adjacent first and second battery slices, the first battery slice Connected with the second battery piece by a welding tape, the first battery piece and the second battery piece have an overlapping area; when the first battery piece is located on the first conveying mechanism, the second battery When at least a part of the sheet is located on the second conveying mechanism, the displacement mechanism drives the first conveying mechanism and/or the second conveying mechanism to displace so that the first battery sheet and the The second cell is separated so as to lay the gasket in the overlapping area, so that the gasket is added to the two cell during the processing of the tandem lamination, so as to prevent the cell from being damaged during the
  • the manufacturing device of the present disclosure further includes a heating mechanism for heating at least a part of the gasket after the gasket is laid in the overlapping area to melt the gasket and connect the first cell and /Or the second battery sheet is partially melted by pre-heating the gasket, which can prevent the gasket from falling off during the subsequent processing and improve the yield of production.
  • the manufacturing device of the present disclosure also includes a laminating device, including a laminated board, the laminated board is provided with a slot, and the laminating tool is used to transmit the laminating pressure generated by the laminator to the first cell and the second cell.
  • a laminating device including a laminated board, the laminated board is provided with a slot, and the laminating tool is used to transmit the laminating pressure generated by the laminator to the first cell and the second cell.
  • the battery slice has an overlapping area between the battery slices; when laminated, the laminate is provided on the first battery slice and the second battery slice, the slot is located above the overlapping area, the The laminating tooling buffers the pressure exerted by the laminator, and prevents the parts of the two battery sheets located in the overlapping area from being cracked or chipped due to the pressure exerted by the laminator directly; the present disclosure also proposes
  • the width of the slot is greater than the width of the overlap area, the slot includes a first end and a second end that are opposed to each other, the at least two battery slices include a first battery slice and a second battery slice, and the first battery slice includes a first battery slice and a second battery slice.
  • Two battery sheets are stacked above the first battery sheet; when laminated, the second end is located above the first battery sheet, and the first end is located above the second battery sheet, The distance between the first end and the overlapping area is greater than the distance between the second end and the overlapping area.

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Abstract

本公开的实施例提供一种电池串、电池组件、电池串的制造装置及制造方法以及电池组件的制造装置及制造方法。该电池串包括：至少两个电池片(11,12)，所述至少两个电池片(11,12)包括相邻的第一电池片(11)及第二电池片(12)，所述至少两个电池片(11,12)中每个电池片的正反面设有栅线，所述第一电池片(11)正面的所述栅线与所述第二电池片(12)反面的所述栅线通过焊带(20)连接，所述第一电池片(11)及所述第二电池片(12)具有重叠区域(30)，所述重叠区域(30)设有覆盖了位于所述重叠区域(30)内的所述焊带(20)的至少一个侧面的缓冲垫(40)，所述缓冲垫(40)由预先设置在所述重叠区域(30)内并经高温融化的垫片(61)形成。该电池串中，通过设置缓冲垫(40)，将电池片(11,12)间的接触变为通过缓冲垫(40)的面接触，避免了由焊带(20)与两个电池片(11,12)的点接触产生的接触应力造成电池片隐裂，且结构简单易于加工。

Description

电池串、电池组件、电池串的制造装置及制造方法
本申请要求于2020年6月24日递交的中国专利申请第202010591389.7号、2020年6月24日递交的中国专利申请第202021198743.1号以及2020年7月15日的递交的中国专利申请第202010680470.2号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及一种电池串、电池组件、电池串的制造装置及制造方法以及电池组件的制造装置及制造方法。
背景技术
随着光伏行业的迅速发展，光伏组件的高功率化是行业追求的目标，而在MBB串焊技术上延伸产生的叠焊技术被越来越多公司重视。MBB叠焊技术是基于当前的焊接技术，将电池片相互搭接焊接的技术，使得电池片形成电池串，例如，通过焊带，将两片电池片边缘重叠地焊接到一起，并将处于两片电池片的重叠区域的焊带压扁，虽然这样一定程度减少重叠区应力，但该依旧存在焊带对电池片的点支撑，仍会导致电池的重叠区域出现明显隐裂。
发明内容
本公开的实施例涉及一种电池串、电池组件、电池串的制造装置及制造方法以及电池组件的制造装置及制造方法。
第一方面，本公开的实施例提供一种电池串，包括：至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。
例如，在根据本公开实施例的电池串中，所述垫片为条状或带状。
例如，在根据本公开实施例的电池串中，所述垫片包括乙烯-醋酸乙烯共聚物、聚烯烃弹性体、包含乙烯-醋酸乙烯共聚物与聚烯烃弹性体的复合材料或聚乙烯。
第二方面，本公开的实施例提供一种电池组件，该电池组件根据第一方面任意所述的电池串。
第三方面，本公开的实施例提供一种电池串的制造装置，构造为向待加工电池串设置缓冲垫，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，其中所述制造装置包括：电池片分离机构，构造为使得所述待加工电池串的相邻的第一电池片及第二电池片发生相对运动，以使所述重叠区域内的所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
例如，在根据本公开实施例的电池串的制造装置中，所述第一电池片与所述第二电池片的相对运动包括相对转动、相对平移或者相对转动、相对平移的组合。
例如，在根据本公开实施例的电池串的制造装置中，所述电池片分离机构包括：电池片传送装置，包括至少两个相邻设置的第一传送部分和第二传送部分，所述第一传送部分和所述第二传送部分的传送所述电池片的传送表面之间具有大于90度且小于180度的夹角，使得在所述待加工电池串沿着所述至少两个传送部分的传送表面从所述第二传送部分向所述第一传送部分行进，且所述第一电池片的大部分位于所述第一传送部分而所述第二电池片未位于所述第一传送部分上时，所述重叠区域内的所述第一电池片及所述第二电池片相对旋转而在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
例如，在根据本公开实施例的电池串的制造装置中，所述第一传送部分和所述第二传送部分的传送表面之间的夹角大于或等于135度且小于180度。
例如，在根据本公开实施例的电池串的制造装置中，所述第一传送部分和所述第二传送部分的传送表面之间的夹角等于135度。
例如，在根据本公开实施例的电池串的制造装置中，所述电池片分离机 构包括：电池片移动装置，构造为传送所述待加工电池串，以进行垫片铺设；电池片拾取装置，包括至少两个拾取件组，所述每个拾取件组包括一个或者更多拾取件，每个所述拾取件组构造为拾取一片电池片，所述至少两个拾取件组构造为带动相邻的所述电池片运动，使得所述重叠区域内的所述第一电池片及所述第二电池片沿第三预设方向远离，从而所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内，所述第三预设方向垂直于所述第一电池片的所述主表面或者与所述主表面的垂直方向具有大于0度且小于90度的夹角。
例如，在根据本公开实施例的电池串的制造装置中，所述拾取件为吸附件，所述电池片拾取装置与所述待加工电池串可相对移动。
例如，在根据本公开实施例的电池串的制造装置中，所述第三预设方向与所述主表面的垂直方向具有大于0度且小于45度的夹角。
例如，在根据本公开实施例的电池串的制造装置中，所述至少两个拾取件组的每个拾取一片电池片而带动所述电池片沿所述第三预设方向移动，在沿着所述第三预设方向远离所述制造装置方向上，位于上侧的所述电池片的移动距离大于位于下侧的电池片的移动距离。
例如，在根据本公开实施例的电池串的制造装置中，所述电池片分离机构包括：位移机构、第一传送机构、第二传送机构，所述位移机构用于带动第一传送机构和/或所述第二传送机构位移；铺设时，电池串从所述第二传送机构传送至所述第一传送机构，所述电池串包括相邻的第一电池片及第二电池片，所述第一电池片与所述第二电池片的正反面设有栅线且所述第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构带动所述第一传送机构和/或所述第二传送机构位移以使所述重叠区域内的所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
例如，根据本公开实施例的电池串的制造装置还包括：加热机构，构造为当所述垫片铺设至所述重叠区域内后对所述垫片的至少一部分加热以使所述垫片融化并连接所述第一电池片和/或所述第二电池片。
例如，在根据本公开实施例的电池串的制造装置中，所述第一传送机构 及所述第二传送机构包括传送带，所述电池串设于所述传送带上，所述传送带带动所述电池串位移以传送所述电池串。
例如，在根据本公开实施例的电池串的制造装置中，所述位移机构用于带动所述第一传送机构位移，所述第一传送机构与所述第二传送机构可转动连接；所述电池串从所述第二传送机构传送至所述第一传送机构时，所述第一传送机构及所述第二传送机构与水平面有第一预设角度的夹角；当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构使所述第一传送机构与水平面的夹角转换为第二预设角度，以使所述重叠区域内的所述第一电池片及所述第二电池片分离。
例如，在根据本公开实施例的电池串的制造装置中，所述第一预设角度的取值范围为5度至45度。
例如，在根据本公开实施例的电池串的制造装置中，所述位移机构用于带动第一传送机构和所述第二传送机构位移，当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构使所述第一传送机构与所述第二传送机构沿第一预设方向互相远离，以使所述重叠区域内的所述第一电池片及所述第二电池片分离。
例如，在根据本公开实施例的电池串的制造装置中，所述第一预设方向垂直于所述第一电池片的主表面或者与所述主表面的垂直方向具有大于0度且小于90度的夹角。
例如，根据本公开实施例的电池串的制造装置还包括：垫片铺设机构，构造为当所述重叠区域内的所述第一电池片及所述第二电池片分离时，将所述垫片铺设至所述重叠区域内；其中所述垫片铺设机构包括：送料机构，构造为于将垫片向第二预设方向传送；裁切机构，所述裁切机构用于当传送的所述垫片的长度满足预设要求时，裁断所述垫片；牵引机构，所述牵引机构用于将被裁断的所述垫片铺设至所述重叠区域。
例如，在根据本公开实施例的电池串的制造装置中，所述第一传送机构及所述第二传送机构包括吸附结构，所述吸附结构用于通过吸附将所述电池串固定在所述第一传送机构及所述第二传送机构上。
例如，根据本公开实施例的电池串的制造装置还包括：层压装置，构造为对所述电池串进行层压，使得所述垫片融化并形成覆盖位于所述重叠区域 内的所述焊带的至少一个侧面的缓冲垫，其中所述层压装置包括：层压板，所述层压板上设有开槽，当层压时，所述层压板设于所述第一电池片及所述第二电池片上方，所述开槽设于所述重叠区域的上方。
例如，在根据本公开实施例的电池串的制造装置中，所述开槽的宽度大于所述重叠区域的宽度，所述开槽包括相对设置的第一端及第二端，所述第二电池片叠放于所述第一电池片的上方；当层压时，所述第一端位于所述第二电池片的上方，所述第二端位于所述第一电池片的上方，所述第一端与所述重叠区域的距离大于所述第二端与所述重叠区域的距离。
例如，在根据本公开实施例的电池串的制造装置中，所述开槽贯通所述层压板。
例如，在根据本公开实施例的电池串的制造装置中，所述开槽至少为两个，所述开槽沿第一方向布置成至少两列，所述列包括在第二方向上相邻的第一列及第二列，所述第一列内的所述开槽的位置与所述第二列内的所述开槽的位置不对称，所述第一方向垂直于所述第二方向。
例如，在根据本公开实施例的电池串的制造装置中，所述开槽的宽度为2cm±1cm。
例如，在根据本公开实施例的电池串的制造装置中，所述第二端与所述重叠区域的距离为8mm±7mm。
例如，在根据本公开实施例的电池串的制造装置中，所述开槽的深度不小于0.25mm。
例如，在根据本公开实施例的电池串的制造装置中，所述层压板由软性材料制成。
例如，在根据本公开实施例的电池串的制造装置中，所述层压板由耐高温材料制成。
例如，在根据本公开实施例的电池串的制造装置中，所述层压装置还包括：层压背板，用于层压，所述层压板连接所述层压背板，所述层压板设于所述第一电池片和所述第二电池片上，所述层压板的开槽位于所述重叠区域的上方；当层压时，层压压力从所述层压背板传递至所述层压工装，并由所述层压工装传递至所述第一电池片和所述第二电池片。
例如，在根据本公开实施例的电池串的制造装置中，所述第二预设方向与所述焊带的延伸方向垂直。
第四方面，本公开的实施例提供一种如第一方面任意所述的电池串的制造方法，包括：在所述第一电池片的正面设置垫片以及焊带；将第二电池片叠放在所述第一电池片的上方，使所述第二电池片的反面面对所述第一电池片的正面，使得所述第二电池片的反面的所述栅线连接至所述焊带，且所述垫片位于所述第一电池片与所述第二电池片的重叠区域内；对所述第一电池片及所述第二电池片进行层压，所述垫片融化并形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，其中在所述第一电池片的正面设置垫片以及焊带包括：在所述第一电池片的正面放置垫片；将所述第一电池片的正面的栅线连接至焊带；或者将第一电池片的正面的栅线连接至焊带；在所述焊带上放置垫片。
例如，在根据本公开实施例的电池串的制造方法中，所述对所述第一电池片及所述第二电池片进行层压包括：在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
第五方面，本公开的实施例提供一种如第一方面任意所述的电池串的制造方法，包括：获得或制备待加工电池串，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；将所述重叠区域中的所述第一电池片和所述第二电池片分离；将垫片铺设至所述重叠区域内；融化所述垫片，以形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫。
例如，在根据本公开实施例的电池串的制造方法中，所述融化所述垫片包括：对所述第一电池片及所述第二电池片进行层压，包括：在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
第六方面，本公开的实施例提供一种电池组件的制造装置，包括：根据如第三方面任意所述的电池串的制造装置。
第七方面，本公开的实施例提供一种电池组件的制造方法，包括：采用 如第六方面所述的电池组件的制造装置获得所述电池组件，其中，所述电池组件包括电池串，所述电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是一种电池串的结构示意图；
图2是本公开实施例提供的电池串的结构示意图；
图3是本公开实施例提供的铺设垫片时的电池串的结构示意图；
图4是本公开实施例提供的铺设了垫片后的电池串的结构示意图；
图5是本公开实施例提供的制造装置的一种实施例的上料示意图；
图6是本公开实施例提供的制造装置的一种实施例的垫片铺设示意图；
图7是本公开实施例提供的制造装置的一种实施例的垫片铺设后复位示意图；
图8是本公开实施例提供的制造装置的另一种实施例的垫片铺设示意图；
图9是本公开实施例提供的示例性电池片分离机构的示意图；
图10是本公开实施例提供的另一示例性电池片分离机构的示意图；
图11是本公开实施例提供的示例性垫片铺设过程示意图；
图12是本公开实施例提供的垫片预加热示意图；
图13是本公开实施例提供的垫片铺设机构的结构示意图；
图14是本公开实施例提供的一种层压板的结构示意图；
图15是本公开实施例提供的层压板设于电池串上方时的正视图；
图16是本公开实施例提供的开有贯通的开槽的层压板及待层压组件的结构示意图；
图17是本公开实施例提供的一种层压板的结构示意图；
图18是本公开实施例提供的图17所示的层压板设于电池片上方时的俯视图；
图19是本公开实施例提供的图18所示的层压板与电池片的局部放大图；
图20是本公开实施例提供的一种层压板的结构示意图；
图21是本公开实施例提供的图20所示的层压板设于电池片上方时的俯视图；
图22是本公开实施例提供的图21所示的层压板与电池片的局部放大图；
图23是本公开实施例提供的光伏电池串制造过程示意图；以及
图24是本公开实施例提供的电池串制造过程另一示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在本公开中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；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。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
用于生产光伏组件的叠焊技术中，如图1所示，通过将处于两片电池片的重叠区域的焊带压扁，能够减少在重叠区域焊带对电池的点支撑应力，降低电池隐裂的风险，但是，这种方案中仍然会存在焊带对电池片的点支撑，可能会导致电池的重叠区域出现明显隐裂。
本公开的实施例提供一种电池串，所述电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。通过在相邻电池片的重叠区域设置覆盖了位于重叠区域内的焊带的缓冲垫，且该缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成，使得将电池片间的接触从通过焊带的点接触变为通过缓冲垫的面接触，避免了由焊带与两个电池片的点接触产生的接触应力造成电池片隐裂，且结构简单易于加工。而且，在本公开的实施例中，所述缓冲垫由在层压前预先设置在所述重叠区域内并经层压融化的垫片形成，提高了缓冲垫的生成效率，且不需要额外的加热工序，便于加工。
进一步地，一种示例性串焊设备难以在串焊叠片的加工过程中在两个电池片中增加垫片，设备改造难度大，而且，即使能够在该示例性串焊设备上增加铺设垫片的过程，也可能会影响串焊设备的电池串制造精度，且容易发生虚焊、焊偏等情况。
本公开的实施例还提供一种电池串的制造装置，所述装置包括：位移机构、第一传送机构、第二传送机构，所述位移机构用于带动第一传送机构和/或所述第二传送机构位移；铺设时，电池串从所述第二传送机构传送至所述第一传送机构，所述电池串包括相邻的第一电池片及第二电池片，所述第一电池片与所述第二电池片通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构带动所述第一传送机构和/或所述第二传送机构位移以使所述重叠区域内的所述第一电池片及所述第二电池片分离，以便将垫片铺设至所述重叠区域内，实现在串焊叠片的加工过程中在两个电池片中增加垫片，以避免电池片在层压过程中因与 焊带与两个电池片的点接触产生的接触应力造成的隐裂，且该装置结构简单，易于制造。
下面结合附图具体描述根据本公开的实施例的电池串、电池组件、电池串的制造装置及制造方法以及电池组件的制造装置及制造方法。
如图2所示，本公开的实施例提出的电池串，例如，光伏电池串包括至少两个电池片，所述至少两个电池片中每个电池片的正反面设有栅线，所述至少两个电池片包括相邻的第一电池片11及第二电池片12，相邻的电池片11的正面的栅线与电池片12的反面的栅线通过多个焊带20连接。电池片11与电池片12间具有重叠区域30，在该重叠区域30内设有缓冲垫40，该缓冲垫40覆盖了位于重叠区域30内的焊带20，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。在该结构中，由于缓冲垫40覆盖了重叠区域内的焊带的至少一个侧面，因此在重叠区域30内焊带20与电池片11的正面及电池片12的反面中的至少一个未发生直接接触，电池片11与电池片12通过缓冲垫40进行了面接触，规避了电池片在重叠区域30与焊带20的点接触的接触应力造成电池片隐裂的风险。
例如，图中以第一电池片11和第二电池片12为例对电池串的结构进行了说明，本领域的技术人员应该清楚，对于电池串中任意两个相邻设置的电池片，以上结构也是同样适用的，这里将不再赘述。
例如，所述缓冲垫40由经层压后融化的垫片61形成。垫片61的材料为非导电的软性材料，包括乙烯-醋酸乙烯共聚物、聚烯烃弹性体、包含乙烯-醋酸乙烯共聚物与聚烯烃弹性体的复合材料或聚乙烯等弹性体材料。
例如，垫片61及缓冲垫40的宽度不小于重叠区域30的宽度。例如，缓冲垫40的宽度为5mm±3mm。
例如，焊带20的数量不少于2个，垫片61及缓冲垫40的长度不小于焊带20中相距最远的两个焊带20的间距，使缓冲垫能够覆盖所有位于重叠区域30内的焊带。
经层压机层压后，由于层压过程的高温，垫片61会发生融化及形变，融化后的垫片61会包裹住重叠区域30内的焊带20，使重叠区域30内的焊带20不与电池片11及电池片12都发生直接接触，电池片11与电池片12从原先的点接触变成由垫片形成的弹性面接触，降低了电池片的隐裂风险。
例如，重叠区域30的长度近似于第一电池片11及第二电池片12的长度， 宽度为0.7mm±0.5mm。
本公开的实施例还提供一种电池组件，包括如上任意所述的电池串，该电池组件还包括其他用于将电池串电连接的连接件等，本公开的实施例将不对此进行限制。
为了在重叠区域30处铺设垫片61，本公开的实施例还提供一种如上任意实施例所述的电池串的制造装置，通过该电池串的制造装置可以在电池片间的重叠区域30处铺设垫片61，铺设垫片61时的状态可以参见图3，铺设垫片后复位的电池串可以如图4所示。
例如，该电池串的制造装置，构造为向待加工电池串设置缓冲垫，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，
其中所述制造装置包括：
电池片分离机构，构造为使得所述待加工电池串的相邻的第一电池片及第二电池片发生相对运动，以使所述重叠区域内的所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
例如，所述第一电池片与所述第二电池片的相对运动包括相对转动、相对平移或者相对转动、相对平移的组合，只要是能够使得重叠区域的两个电池片分离以留出足够铺设垫片的空间且不会对焊带拉扯电池片焊点带来不利的影响，例如，使得焊点脱落或电池片碎裂等的相对运动都是可以的。
这里，待加工电池串是指电池片已经被连接焊带且相邻电池片通过焊带连接起来，接下来需要在两个相邻电池片的重叠区域铺设垫片，且将垫片融化以形成缓冲垫的电池串。
例如，如图5所示，根据本公开的实施例的电池片分离机构开包括第一传送机构50、第二传送机构60及位移机构。
位移机构用于带动第一传送机构50和/或第二传送机构60发生位移，可带动第一传送机构50和/或第二传送机构60发生转动或移动第一传送机构50和/或第二传送机构60的位置。
位移机构可以包括任何可实现上述功能的机械结构或电路等，本公开对 此不加限定。
第一传送机构50和第二传送机构60的结构可以相同，也可以不同。
在一种实施方式中，位移机构可转动第一传送机构50以在重叠区域30内铺设垫片61。如图5所示，第一传送机构50和第二传送机构60可以包括一根完整的传送带71和传送轮81、传送轮82及传送轮83。第一传送机构50包括传送轮83和图5中传送带在传送轮82的右侧的部分，第二传送机构60包括传送轮81和图5中传送带在传送轮82的左侧的部分。
如图5所示，铺设垫片起始时，第一传送机构50和第二传送机构60与水平面的夹角为第一预设角度。第一电池片11和第二电池片12从传送轮81上方上料至第二传送机构60。如图6所示，当第一电池片11位于第一传送机构50上、第二电池片12的至少一部分位于第二传送机构60上时，位移机构使第一传送机构50与水平面的夹角为第二预设角度，使重叠区域30内的第一电池片11及第二电池片12分离，垫片铺设机构90将垫片61铺设至重叠区域30内。
例如，重叠区域30内的第一电池片11及第二电池片12在垂直于所述第一电池片11的主表面的方向上分离，该第一电池片的主表面为设置焊带的表面。
例如，传送轮82的下方可设置支撑结构87，可作为第一传送机构50旋转至与水平面呈第二预设角度时的旋转支点，也可在第一传送机构50旋转至与水平面呈第二预设角度时支撑传送带，以避免传送带下垂。
例如，所述第一预设角度的区域范围为5度至45度，所述第二预设角度为0度。
当铺设完垫片61后，如图7所示，第一传送机构50可复位至起始时的位置，以便继续在第二电池片12与后续电池片的重叠区域处铺设垫片。
当在所有的重叠区域内都铺设了垫片后，即可对电池串进行层压。
在另一实施方式中，位移机构可上下平移第一传送机构50以在重叠区域30内铺设垫片61。如图8所示，第一传送机构50包括传送带73、传送轮86及传送轮87。第二传送机构60包括传送带72、传送轮84、传送轮85。位移机构可带动第一传送机构和/或第二传送机构沿图8的竖直方向，也就是，垂直于电池片的主表面的方向上下平移。起始时，第一传送机构50与第二传送机构60平行于水平面，第一传送机构50与第二传送机构60连通，第一电池 片11和第二电池片12从传送轮84的方向上料至第二传送机构60，然后向第一传送机构50的方向传送。
如图8所示，当第一电池片11位于第一传送机构50上、第二电池片12的至少一部分位于第二传送机构60上时，位移机构将第一传送机构50向下平移预设距离，使重叠区域内的第一电池片11和第二电池片12分离，垫片铺设机构90将垫片61铺设至重叠区域30内。
备选地，当第一电池片11位于第一传送机构50上、第二电池片12的至少一部分位于第二传送机构60上时，位移机构将第二传送机构60向上平移预设距离，使重叠区域内的第一电池片11和第二电池片12分离，垫片铺设机构90将垫片61铺设至重叠区域30内。
或者，当第一电池片11位于第一传送机构50上、第二电池片12的至少一部分位于第二传送机构60上时，位移机构将第二传送机构60向上平移预设距离且将第一传送机构50向下平移预设距离，使重叠区域内的第一电池片11和第二电池片12分离，垫片铺设机构90将垫片61铺设至重叠区域30内。
例如，位移机构也可将第二传送机构60向上平移预设距离，以使重叠区域内的第一电池片11及第二电池片12分离。
例如，所述预设距离的取值范围为1-5mm。
当铺设完垫片61后，第一传送机构50可复位至起始时的位置，以便继续在第一电池片11与后续电池片的重叠区域处铺设垫片。
当在所有的重叠区域内都铺设了垫片后，即可对电池串进行层压。
备选地，所述第一传送机构及所述第二传送机构还可以包括吸附结构，所述吸附结构用于通过吸附将所述电池串固定在所述第一传送机构及所述第二传送机构上。
备选地，如图9所示，所述电池片分离机构可以包括：电池片传送装置200，包括至少两个相邻设置的第一传送部分201和第二传送部分202，所述第一传送部分201的传送所述电池片的传送表面2011和所述第二传送部分202的传送所述电池片的传送表面2021之间具有大于90度且小于180度的夹角A，使得在所述待加工电池串300沿着所述至少两个传送部分的传送表面从所述第二传送部分202向所述第一传送部分201行进，且所述第一电池片11的大部分位于所述第一传送部分201而所述第二电池片12的大部分部分位于所述第二传送部分202上且所述第二电池片12未位于所述第一传送部 分201上时，所述重叠区域内的所述第一电池片11及所述第二电池片12由于两个传送表面之间的夹角而相对旋转，从而在垂直于所述第二电池片12的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
例如，所述第一传送部分和所述第二传送部分的传送表面之间的夹角大于或等于135度且小于180度。
例如，所述第一传送部分和所述第二传送部分的传送表面之间的夹角等于135度。
例如，第一传送部分201设置在第二传送部分202的下游方向，第二传送部分202可以水平设置，而第一传送部分201可以相对于水平方向具有小于或等于90度且大于0度的夹角，例如，小于或等于45度且大于0度。例如，第二传送部分202的传送表面2021水平设置，第一传送部分201的传送表面2011相对于水平方向具有大于或等于90度且小于0度的夹角，例如小于或等于45度且大于0度。
例如，两个传送部分的传送表面上可以支撑有传送带，传送带被驱动装置驱动而用来带动电池串移动，所述传动带上可以设置有吸附装置，以将电池串固定在传动带上。当传动带带着第一电池片来到第一传送部分和第二传送部分交界处时，由于第一传送部分倾斜设置，传送带便也倾斜向下，该第一电池片的前端在某个时刻可能是悬空的而没有传送带的支撑，当进一步被传送带带动而行进时，由于重力作用，该第一电池片会落在倾斜设置在下游的第一传送部分，也就是，其上的传动带上，而此时，与之相邻而在其上游方向的第二电池片的大部分还位于水平设置的第二传送部分上且任何部分并未位于第一传送部分上，这样第一电池片倾斜而第二电池片保持水平，两个电池片在交叠区域便分离了，这时可以使得传动带停止移动，从而电池片也停止移动，进而可以进行采用机械手、人工等进行垫片铺设操作。接下来，当垫片铺设完毕后，传动带继续带动电池串行进，当第二电池片也落在第一传送部分上时，便可以进行第二电池片和其后侧的相邻电池片之间的垫片铺设工作。
例如，如果传送带不停止移动，机械手等也有足够的时间铺设垫片，则为了提高工作效率，传动带也可以不停止。
例如，图9中示出的电池片传送装置200还包括几个传动轮，这并不构成对本申请的限制，本领域的技术人员可以根据需要进行更改的，只要是能 够实现第一传送部分201和第二传送部分202的传送表面之间具有夹角且能够带动电池串移动的方案即可。
这里所提供的电池片传送装置不需要设置使得两个传送部分发生相对移动的机构，利用两个传送部分安装后便形成的夹角，使得电池片在传送部分的传送表面移动时由于该夹角而能够使得两个相邻的电池片在重叠区域分离，从而结构简单，不需要额外的移动结构以及时间，能够进一步提高工作效率，节省成本。
备选地，如图10(a)和(b)所示，电池片分离机构还可以包括：电池片移动装置400，构造为传送所述待加工电池串300，以进行垫片铺设；电池片拾取装置500，包括至少两个拾取件组，所述每个拾取件组包括一个或者更多拾取件501，每个所述拾取件组构造为拾取一片电池片，所述至少两个拾取件组构造为带动相邻的所述电池片运动，使得所述重叠区域内的所述第一电池片及所述第二电池片沿第三预设方向远离，从而所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内，其中所述第三预设方向垂直于所述第一电池片的所述主表面或者与所述主表面的垂直方向具有大于0度且小于90度的夹角。如图11所示，其中箭头B示出为主表面的垂直方向。
这里，应该注意的是，图10(a)示出的是电池片拾取装置未拾取电池片时的状态，图中示出的电池片似乎并不是平放在电池片移动装置上，但是实际的工艺过程中，电池片很薄，且由于相邻电池片之间具有重叠区域，除了位于最底层的电池片之外，其他电池片由于被底层的电池片垫起来都是略微倾斜的，但是由于电池片很薄这样的倾斜可以忽略不计，在此情况下，可以近似认为电池片是平铺在电池片移动装置上的，而附图10(a)和(b)中电池片示出为较厚，因此夸大了这种倾斜，实际中，这种倾斜可以忽略不计，认为电池片的主表面都是平行于电池片移动装置的传送表面设置的。这样的情况适用于本公开所有的实施例，这里以图10作为示例进行了说明，其他实施例将不再进行特别说明。如图11所示，其中箭头B示出为主表面的垂直方向，箭头C为主表面的延伸方向。
图10(b)示出了电池片被电池片拾取装置拾取起来的状态，如图所示，通过拾取装置的拾取，相邻电池片在交叠区域中分离，从而可以进行垫片铺设操作。
例如，所述拾取件为吸附件501，所述电池片拾取装置500与所述待加工电池串300可相对移动。
例如当电池片拾取装置包括至少四组拾取件组时，每次可以拾取四片电池片，当三个重叠区域中的相邻电池片分离后，垫片便可以铺设在该重叠区域中。图11给出了示例性操作流程图，沿着箭头从上到下示意出了垫片的铺设过程，第一幅图是待加工电池串的初始状态，电池片上已经连接有焊带，相邻的电池片之间具有重叠区域，第二幅图中，在电池片拾取装置的作用下，相邻电池片在第三预设方向上远离，从而为铺设垫片提供空间，第三幅图中，垫片铺设机构利用机械手等工具将垫片61铺设在相邻电池片的重叠区域，第四幅图，铺设好垫片的电池片被电池片拾取装置带动而复位到起始位置。然后，可以进行下面四个电池片的垫片铺设操作，此时，可以是电池片移动装置带动电池串行进到下面四个电池片位于电池片拾取装置的操作位置处，或者可以移动电池片拾取装置，使得可以对下面四个电池片进行拾取、铺设垫片操作。
例如，电池片拾取装置还可以包括与待加工电池串中电池片数量相等的拾取件组，这样可以一次拾取全部的电池片，从而不需要移动电池串或者电池片拾取装置便能够完成整个垫片的铺设工作，节省时间，提高效率。
例如，所述第三预设方向可以与所述主表面的垂直方向B具有大于0度且小于90度的夹角。
这里，当所述第三预设方向与所述主表面的垂直方向具有大于0度且小于90度的夹角，例如，大于0度且小于45度时，相邻两个电池片发生的相对运动可以是旋转和平移的组合，从而防止电池片焊点脱落、电池片碎裂等缺陷。
例如，所述至少两个拾取件组的每个拾取一片电池片而带动所述电池片沿所述第三预设方向移动，在沿着所述第三预设方向远离所述制造装置的方向上，位于上侧的所述电池片的移动距离大于位于下侧的电池片的移动距离，从而使得相邻电池片分离。
例如，在沿着所述第三预设方向远离所述制造装置的方向上，可以是位于下侧的电池片不移动，而位于上侧的电池片移动等，本申请不对此进行限制，只要能够使得相邻电池片在重叠区域能够分离即可。
例如，电池片拾取装置包括的至少两个电池片拾取组可以共同设置在同 一个结构中，但是采用不同的控制装置进行控制，且彼此独立运动；或者可以彼此独立地设置在不同结构中，独立控制且独立运动。
例如，该制造装置还可以包括：加热机构，构造为当所述垫片铺设至所述重叠区域内后对所述垫片的至少一部分加热以使所述垫片融化并连接所述第一电池片和/或所述第二电池片。
例如，图12示出了加热机构110，为了防止垫片在后续的电池串移动或加工过程中滑落，在向电池串的重叠区域中加入垫片后，可使用加热机构110对垫片进行局部加热，使垫片发生局部融化并与电池片粘结在一起，也就是，将垫片预固定到电池片。如图12所示，例如，加热机构110可对垫片的两端及中心位置进行预加热，使其部分融化并与第一电池片11和/或第二电池片12连接，防止垫片在后续的加工或移动过程中发生位移。
例如，可对垫片处于具有重叠区域的两个电池片中位于下方的电池片上方的部分的两端及中心位置进行预加热，使其部分融化并与位于下方的电池片连接，以避免垫片的处于位于上方的电池片下方的部分在局部加热时发生融化，导致融化后的垫片粘在传送机构上。
例如，加热机构可以包括烙铁头、红外激光或热风等加热装置。
例如，该制造装置还可以包括：垫片铺设机构，构造为当所述重叠区域内的所述第一电池片及所述第二电池片分离时，将所述垫片铺设至所述重叠区域内；其中所述垫片铺设机构包括：送料机构，构造为于将垫片向第二预设方向传送；裁切机构，所述裁切机构用于当传送的所述垫片的长度满足预设要求时，裁断所述垫片；牵引机构，所述牵引机构用于将被裁断的所述垫片铺设至所述重叠区域。
例如，如图13所示，垫片铺设机构90可以包括送料盘91、送料辊92、裁切刀93及牵引夹爪94。图13示出了在电池片上预先铺设了焊带后，使用该设备进行垫片铺设的流程，该流程包括：
将垫片61裁切为预设宽度，并挂置于送料盘91中；
将该铺设设备的垫片61进料方向调节为与焊带20的进料方向垂直；
送料辊92带动垫片61向电池片95的方向移动；
当垫片61的长度达到预设长度时，裁切刀93将垫片61切断，牵引夹爪94将切下的垫片61拖拉至电池片95上的预设位置。
例如，也可先使用该设备在电池片11上铺设垫条61，然后在垫条61的 上方铺设焊带20，本实施例对此不加限定。
例如，也可采用其他的机械结构实现垫片铺设，例如使用具有吸嘴的机械手臂将垫片吸起，然后放置到电池片上的预设位置，本申请对此不加限定。
例如，第二预设方向也就是垫片61的进料方向，与焊带20的延伸方向垂直，也就是与焊带20的进料方向垂直。
例如，该制造装置还可以包括：层压装置，构造为对所述电池串进行层压，使得所述垫片融化并形成覆盖位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，其中所述层压装置包括：层压板，所述层压板上设有开槽，当层压时，所述层压板设于所述第一电池片及所述第二电池片上方，所述开槽设于所述重叠区域的上方。
在完成垫片61的铺设后，电池串可放入层压装置中进行层压。在层压的过程中，垫片61会因层压的温度及压力发生融化。例如，垫片61可在如图14所示的层压板100的帮助下向重叠的两片电池片中位于下方的电池片的方向流动，以形成覆盖了位于重叠区域内的焊带的缓冲垫。
如图15所示，本申请提出的层压装置包括层压板100，层压板100上设有开槽101，该层压装置用于将层压机产生的层压压力传递至第一电池片11及第二电池片12，所述电池片间具有重叠区域30。如图所示，当层压时，所述层压板设于第一电池片11及第二电池片12上，且开槽101位于重叠区域30的上方。
进一步地，由于在层压的过程中，重叠的两个电池片中位于上方的电池片的下方悬空，因此容易发生断裂或隐裂。因此，为了进一步地缓冲施加于上方的电池片的压力，相较于位于下方的第一电池片11，开槽101可以更靠近位于上方的第二电池片12，以对位于上方的第二电池片12起到支撑作用。如图15示出的层压板100设于第一电池片11及第二电池片12上方时的正视图，开槽101包括相对设置的第一端102及第二端103。如图15所示，第二电池片12叠放于第一电池片11的上方，开槽101的第一端102位于第二电池片12的上方，第二端103位于第一电池片11的上方，第一端102与所述重叠区域30的距离大于第二端103与重叠区域30的距离。
进一步地，当第一电池片11及第二电池片12的重叠区域30间设有易融化的垫片时，通过将开槽101设置在更靠近第二电池片12的位置可以帮助因层压的热量及压力融化的垫条覆盖重叠区域30且向第二电池片12的方向流 动，以进一步降低电池片层压过程中的隐裂或碎裂风险。
开槽101的长度应当不小于电池片11及电池片12的长度，开槽101的宽度不小于重叠区域30的宽度，以保证开槽能够覆盖重叠区域。例如，开槽101的宽度为2cm±1cm。
进一步地，由于在层压板100的制造过程中在层压板上开设开槽101的加工精度难以控制、加工难度较大，可将层压板100的厚度设置为0.5mm±0.3mm，如图16所示，在层压板上开设贯通层压板100的开槽101，使开槽101的深度与层压板的厚度相同。
例如，所述第二端与所述重叠区域的距离为8mm±7mm。例如，开槽101的深度不小于电池片11及电池片12的重叠区域30的厚度。
例如，开槽的深度不小于0.25mm。
为了缓冲层压装置对电池片11及电池片12的压力，层压板100可以为软性材料。例如，所述软性材料包括硅胶、橡胶、尼龙、涤纶树脂及聚对苯二甲酸乙二醇酯(PET)。在一些实施例中，层压板100也可由包括铝材等轻型金属材料制成。在一些实施例中，层压板100也可由金属与软性材料结合制成，如在铝板上连接橡胶板，在橡胶板上开设开槽101，并将铝板固定到层压机上。
为了保证层压板100能够耐受层压机的层压温度，层压板100可以为耐高温材料制成。
如图17所示，为了提高光伏组件的层压效率，层压板上可开设有多个开槽101，以同时对多个电池片进行层压。当层压时，电池片可以如图18所示的结构设置于层压板的下方。如图18所示，在图18的竖直方向上相邻的两个的电池片间都具有重叠区域。在该实施方式中，开槽101是对称的，即如图19所示，当层压时，开槽101的相对的两端分别位于重叠的两个电池片的上方，且两端与重叠区域的距离相等。当层压时，开槽101覆盖在每个重叠区域的上方，以便对施加于电池片的压力进行缓冲，避免电池片因层压机施加的压力发生隐裂或碎裂。
为了进一步缓冲层压机施加于重叠的电池片中位于上方的电池片的压力，可在层压板上开设位置不对称的多个开槽101。如图20所示，层压板上开设有多个位置不对称的开槽101，每一开槽101具有相对的第一端及第二端。当层压时，电池片排列成沿如图101的竖直方向上相邻的两个的电池片 间都具有重叠区域，且布置在沿图21及图22的竖直方向的多个列中，并在电池片的上方设置如图20所示的层压装置。所述多个列包括在图21和图22的横向方向上相邻的第一列和第二列。在第一列中，在图21和图22的竖直方向上位于上方的电池片叠放在位于下方的电池片的上方，在第二列中，在图21和图22的竖直方向上位于下方的电池片叠放在位于上方的电池片的上方。为了适应电池片的排列方式，如图20所示，层压板上设置了与每个重叠区域对应的开槽101，开槽101沿第一方向布置成至少两列，所述列包括在第二方向上相邻的第一列及第二列，所述第一列内的所述开槽101的位置与所述第二列内的所述开槽101的位置不对称，所述第一方向垂直于所述第二方向。
层压板100上开设有宽度不小于重叠区域30的宽度的开槽，在层压时，层压板100放置在电池串上且开槽对准电池串的重叠区域30。层压装置施加的压力通过该层压板传导至电池串上，层压板对层压装置施加的压力进行了缓冲，避免了两个电池片的位于重叠区域内的部分因直接承受层压机施加的压力而发生隐裂或碎裂。
例如，该层压装置还可以包括层压背板，用于层压，所述层压板连接所述层压背板，所述层压板设于所述第一电池片和所述第二电池片上，所述层压板的开槽位于所述重叠区域的上方；当层压时，层压压力从所述层压背板传递至所述层压板，并由所述层压板传递至所述第一电池片和所述第二电池片。
本公开实施例还提供电池组件的制造装置，用于制造如上任意实施例所述的电池组件，包括如上任意所述的电池串的制造装置。
本公开的实施例还提供如上任意所述的电池串的制造方法，包括：
在所述第一电池片的正面设置垫片以及焊带；
将第二电池片叠放在所述第一电池片的上方，使所述第二电池片的反面面对所述第一电池片的正面，使得所述第二电池片的反面的所述栅线连接至所述焊带，且所述垫片位于所述第一电池片与所述第二电池片的重叠区域内；
对所述第一电池片及所述第二电池片进行层压，所述垫片融化并形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，
其中在所述第一电池片的正面设置垫片以及焊带包括：
在所述第一电池片的正面放置垫片；
将所述第一电池片的正面的栅线连接至焊带；或者
将第一电池片的正面的栅线连接至焊带；
在所述焊带上放置垫片。
例如，所述对所述第一电池片及所述第二电池片进行层压包括：在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
例如，如图23所示，在该电池串的生产过程中，可预先在电池片11的上表面连接焊带20，然后在预设位置放置垫片61，最后将电池片12放置到垫片61上，并使电池片11与电池片12平行且重叠区域的宽度为预设宽度。在完成电池片12的设置后，即可将该电池串放置到层压机中进行层压。
在层压的过程中，垫片61会因层压的温度及压力发生融化。例如，垫片61可在如图14所示的层压板100的帮助下向重叠的两片电池片中位于下方的电池片的方向流动，形成覆盖了位于重叠区域内的焊带的缓冲垫。
例如，重叠区域30的长度近似于电池片11及电池片12的长度，宽度为0.7mm±0.5mm。
例如，如图24所示，在该电池串的生产过程中，也可在电池片11的上表面的预设位置预先设置垫片61，然后在垫片61上设置焊带20，最后将电池片12放置于电池片11的上方，使电池片11及电池片12的边缘具有重叠区域30。在完成了电池片12的设置后，即可将该电池串放置到层压机中进行层压，在层压的过程中垫片61会因层压的温度及压力发生融化，形成覆盖了位于重叠区域30内的焊带20的缓冲垫40。
本公开的实施例还提供如上任意所述的电池串的示例性制造方法，包括：
获得或制备待加工电池串，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；
将所述重叠区域中的所述第一电池片和所述第二电池片分离；
将垫片铺设至所述重叠区域内；
融化所述垫片，以形成覆盖了位于所述重叠区域内的所述焊带的至少一 个侧面的缓冲垫。
例如，所述融化所述垫片包括：对所述第一电池片及所述第二电池片进行层压，包括：在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
例如，融化垫片还可以采取以上任意所描述的方法，例如，利用烙铁头、红外激光或热风的加热方式等，本公开的实施例不对此进行限制，可以根据不同的垫片材料而采用不同的融化方法。
在电池串已经设置了焊带成串之后分离重叠区域中的相邻的电池片、铺设垫片、融化垫片使得垫片形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，可以进一步节省工艺时间，进一步提升效率，以及提升产品质量。
本公开的实施例还提供一种电池组件的制造方法，包括：采用根据如上任意所述的电池组件的制造装置获得所述电池组件，其中，所述电池组件包括电池串，所述电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。
本公开的实施例提供一种电池串，通过在相邻电池片的重叠区域设置覆盖了位于重叠区域内的焊带的至少一个侧面的缓冲垫，且该缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成，使得焊带不会在重叠区域与第一电池片及第二电池片都发生直接接触，将电池片间的接触从通过焊带的点接触变为通过缓冲垫的面接触，避免了由焊带与两个电池片的点接触产生的接触应力造成电池片隐裂，且结构简单易于加工。而且，在本公开的实施例中，所述缓冲垫由在层压前预先设置在所述重叠区域内并经层压融化的垫片形成，提高了缓冲垫的生成效率，且不需要额外的加热工序，便于加工。
本公开的实施例还提供一种光伏组件，包括如上述实施例所述的光伏电 池串。通过采用本公开的光伏电池串，可避免由焊带与两个电池片的点接触产生的接触应力造成电池片隐裂、导致光伏电池串及光伏组件损坏的风险。
本公开的实施例还提供一种电池串的制造装置，所述装置包括：位移机构、第一传送机构、第二传送机构，所述位移机构用于带动第一传送机构和/或所述第二传送机构位移；铺设时，电池串从所述第二传送机构传送至所述第一传送机构，所述电池串包括相邻的第一电池片及第二电池片，所述第一电池片与所述第二电池片通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构带动所述第一传送机构和/或所述第二传送机构位移以使所述重叠区域内的所述第一电池片及所述第二电池片分离，以便将垫片铺设至所述重叠区域内，实现在串焊叠片的加工过程中在两个电池片中增加垫片，以避免电池片在层压过程中因与焊带与两个电池片的点接触产生的接触应力造成的隐裂，且该装置结构简单，易于制造。
本公开的制造装置还包括加热机构，用于当所述垫片铺设至所述重叠区域内后对所述垫片的至少一部分加热以使所述垫片融化并连接所述第一电池片和/或所述第二电池片，通过对垫片进行预先加热使其部分融化，可防止垫片在后续的加工过程中脱落，提高了生产的成品率。
本公开的制造装置还包括层压装置，包括层压板，所述层压板上设有开槽，所述层压工装用于将层压机产生的层压压力传递至第一电池片及第二电池片，所述电池片间具有重叠区域；当层压时，所述层压板设于所述第一电池片及所述第二电池片上，所述开槽位于所述重叠区域的上方，该层压工装对层压机施加的压力进行了缓冲，避免了两个电池片的位于重叠区域内的部分因直接承受层压机施加的压力而发生隐裂或碎裂；本公开还提出了所述开槽的宽度大于所述重叠区域的宽度，所述开槽包括相对设置的第一端及第二端，所述至少两个电池片包括第一电池片及第二电池片，所述第二电池片叠放于所述第一电池片的上方；当层压时，所述第二端位于所述第一电池片的上方，所述第一端位于所述第二电池片的上方，所述第一端与所述重叠区域的距离大于所述第二端与所述重叠区域的距离，通过将开槽设置于更靠近于位于上方的电池片，可对施加于位于上方的电池片的压力进行进一步地缓冲，避免该电池片因层压机直接施加的压力发生隐裂或碎裂。
对于本公开，还有以下几点需要说明：
(1)本公开实施例附图只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)为了清晰起见，在用于描述本公开的实施例的附图中，层或区域的厚度被放大或缩小，即这些附图并非按照实际的比例绘制。
(3)在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，本公开的保护范围应以权利要求的保护范围为准。

Claims (39)

  1. 一种电池串，包括：
    至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，
    其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。
  2. 根据权利要求1所述的电池串，其中所述垫片为条状或带状。
  3. 根据权利要求1或2所述的电池串，其中所述垫片包括乙烯-醋酸乙烯共聚物、聚烯烃弹性体、包含乙烯-醋酸乙烯共聚物与聚烯烃弹性体的复合材料或聚乙烯。
  4. 一种电池组件，包括如权利要求1-3中任一项所述的电池串。
  5. 一种电池串的制造装置，构造为向待加工电池串设置缓冲垫，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，
    其中所述制造装置包括：
    电池片分离机构，构造为使得所述待加工电池串的相邻的第一电池片及第二电池片发生相对运动，以使所述重叠区域内的所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
  6. 根据权利要求5所述的电池串的制造装置，其中所述第一电池片与所述第二电池片的相对运动包括相对转动、相对平移或者相对转动、相对平移的组合。
  7. 根据权利要求6所述的电池串的制造装置，其中所述电池片分离机构包括：
    电池片传送装置，包括至少两个相邻设置的第一传送部分和第二传送部分，所述第一传送部分和所述第二传送部分的传送所述电池片的传送表面之间具有大于90度且小于180度的夹角，使得在所述待加工电池串沿着所述至少两个传送部分的传送表面从所述第二传送部分向所述第一传送部分行进，且所述第一电池片的大部分位于所述第一传送部分而所述第二电池片并未位于所述第一传送部分上时，所述重叠区域内的所述第一电池片及所述第二电池片相对旋转而在垂直于所述第二电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
  8. 根据权利要求7所述的电池串的制造装置，其中所述第一传送部分和所述第二传送部分的传送表面之间的夹角大于或等于135度且小于180度。
  9. 根据权利要求8所述的电池串的制造装置，其中所述第一传送部分和所述第二传送部分的传送表面之间的夹角等于135度。
  10. 根据权利要求6所述的电池串的制造装置，其中所述电池片分离机构包括：
    电池片移动装置，构造为传送所述待加工电池串，以进行垫片铺设；
    电池片拾取装置，包括至少两个拾取件组，所述每个拾取件组包括一个或者更多拾取件，每个所述拾取件组构造为拾取一片电池片，所述至少两个拾取件组构造为带动相邻的所述电池片运动，使得所述重叠区域内的所述第一电池片及所述第二电池片沿第三预设方向远离，从而所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内，
    其中所述第三预设方向垂直于所述第一电池片的所述主表面或者与所述主表面的垂直方向具有大于0度且小于90度的夹角。
  11. 根据权利要求10所述的电池串的制造装置，其中所述拾取件为吸附件，所述电池片拾取装置与所述待加工电池串可相对移动。
  12. 根据权利要求10所述的电池串的制造装置，其中所述第三预设方向与所述主表面的垂直方向具有大于0度且小于45度的夹角。
  13. 根据权利要求10所述的电池串的制造装置，其中所述至少两个拾取件组的每个拾取一片电池片而带动所述电池片沿所述第三预设方向移动，在沿着所述第三预设方向远离所述制造装置方向上，位于上侧的所述电池片的移动距离大于位于下侧的电池片的移动距离。
  14. 根据权利要求6所述的电池串的制造装置，其中所述电池片分离机构包括：
    位移机构、第一传送机构、第二传送机构，所述位移机构用于带动第一传送机构和/或所述第二传送机构位移；
    铺设时，电池串从所述第二传送机构传送至所述第一传送机构，当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构带动所述第一传送机构和/或所述第二传送机构位移以使所述重叠区域内的所述第一电池片及所述第二电池片在垂直于所述第一电池片的主表面的方向上分离，以便将垫片铺设至所述重叠区域内。
  15. 根据权利要求5-14中任一项所述的制造装置，还包括：
    加热机构，构造为当所述垫片铺设至所述重叠区域内后对所述垫片的至少一部分加热以使所述垫片融化并连接所述第一电池片和/或所述第二电池片。
  16. 根据权利要求14所述的制造装置，其中所述第一传送机构及所述第二传送机构包括传送带，所述电池串设于所述传送带上，所述传送带带动所述电池串位移以传送所述电池串。
  17. 根据权利要求14所述的制造装置，其中所述位移机构用于带动所述第一传送机构位移，所述第一传送机构与所述第二传送机构可转动连接；
    所述电池串从所述第二传送机构传送至所述第一传送机构时，所述第一传送机构及所述第二传送机构与水平面有第一预设角度的夹角；
    当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构使所述第一传送机构与水平面的夹角转换为第二预设角度，以使所述重叠区域内的所述第一电池片及所述第二电池片分离。
  18. 根据权利要求17所述的制造装置，其中所述第一预设角度的取值范围为5度至45度。
  19. 根据权利要求14所述的制造装置，其中所述位移机构用于带动第一传送机构和所述第二传送机构位移，
    当所述第一电池片位于所述第一传送机构上、所述第二电池片的至少一部分位于所述第二传送机构上时，所述位移机构使所述第一传送机构与所述 第二传送机构沿第一预设方向互相远离，以使所述重叠区域内的所述第一电池片及所述第二电池片分离。
  20. 根据权利要求19所述的制造装置，其中所述第一预设方向垂直于所述第一电池片的主表面或者与所述主表面的垂直方向具有大于0度且小于90度的夹角。
  21. 根据权利要求5-20中任一项所述的制造装置，还包括：
    垫片铺设机构，构造为当所述重叠区域内的所述第一电池片及所述第二电池片分离时，将所述垫片铺设至所述重叠区域内；
    其中所述垫片铺设机构包括：
    送料机构，构造为于将垫片向第二预设方向传送；
    裁切机构，所述裁切机构用于当传送的所述垫片的长度满足预设要求时，裁断所述垫片；
    牵引机构，所述牵引机构用于将被裁断的所述垫片铺设至所述重叠区域。
  22. 根据权利要求14-20中任一项所述的制造装置，其中所述第一传送机构及所述第二传送机构包括吸附结构，所述吸附结构用于通过吸附将所述电池串固定在所述第一传送机构及所述第二传送机构上。
  23. 根据权利要求5-22中任一项所述的制造装置，还包括：
    层压装置，构造为对所述电池串进行层压，使得所述垫片融化并形成覆盖位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，
    其中所述层压装置包括：
    层压板，所述层压板上设有开槽，
    当层压时，所述层压板设于所述第一电池片及所述第二电池片上方，所述开槽设于所述重叠区域的上方。
  24. 根据权利要求23所述的制造装置，其中所述开槽的宽度大于所述重叠区域的宽度，所述开槽包括相对设置的第一端及第二端，所述第二电池片叠放于所述第一电池片的上方；
    当层压时，所述第二端位于所述第一电池片的上方，所述第一端位于所述第二电池片的上方，所述第一端与所述重叠区域的距离大于所述第二端与所述重叠区域的距离。
  25. 根据权利要求23或24所述的制造装置，其中所述开槽贯通所述层压板。
  26. 根据权利要求23或24所述的制造装置，其中所述开槽至少为两个，所述开槽沿第一方向布置成至少两列，所述列包括在第二方向上相邻的第一列及第二列，所述第一列内的所述开槽的位置与所述第二列内的所述开槽的位置不对称，所述第一方向垂直于所述第二方向。
  27. 根据权利要求23或24所述的制造装置，其中所述开槽的宽度为2cm±1cm。
  28. 根据权利要求23-27中任一项所述的制造装置，其中所述第二端与所述重叠区域的距离为8mm±7mm。
  29. 根据权利要求23或24所述的制造装置，其中所述开槽的深度不小于0.25mm。
  30. 根据权利要求23-29中任一项所述的制造装置，其中所述层压板由软性材料制成。
  31. 根据权利要求23-29中任一项所述的制造装置，其中所述层压板由耐高温材料制成。
  32. 根据权利要求23-31中任一项所述的制造装置，其中所述层压装置还包括：
    层压背板，用于层压，所述层压板连接所述层压背板，所述层压板设于所述第一电池片和所述第二电池片上，所述层压板的开槽位于所述重叠区域的上方；
    当层压时，层压压力从所述层压背板传递至所述层压板，并由所述层压板传递至所述第一电池片和所述第二电池片。
  33. 根据权利要求21-32中任一项所述的制造装置，其中所述第二预设方向与所述焊带的延伸方向垂直。
  34. 一种如权利要求1-3中任一项所述的电池串的制造方法，包括：
    在所述第一电池片的正面设置垫片以及焊带；
    将第二电池片叠放在所述第一电池片的上方，使所述第二电池片的反面面对所述第一电池片的正面，使得所述第二电池片的反面的所述栅线连接至所述焊带，且所述垫片位于所述第一电池片与所述第二电池片的重叠区域内；
    对所述第一电池片及所述第二电池片进行层压，所述垫片融化并形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，
    其中在所述第一电池片的正面设置垫片以及焊带包括：
    在所述第一电池片的正面放置垫片；
    将所述第一电池片的正面的栅线连接至焊带；或者
    将第一电池片的正面的栅线连接至焊带；
    在所述焊带上放置垫片。
  35. 根据权利要求34所述的制造方法，其中所述对所述第一电池片及所述第二电池片进行层压包括：
    在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
  36. 一种如权利要求1-3中任一项所述的电池串的制造方法，包括：
    获得或制备待加工电池串，其中所述待加工电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，所述至少两个相邻电池片中每个电池片的正反面设有栅线，第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域；
    将所述重叠区域中的所述第一电池片和所述第二电池片分离；
    将垫片铺设至所述重叠区域内；
    融化所述垫片，以形成覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫。
  37. 根据权利要求36所述的制造方法，其中所述融化所述垫片包括：
    对所述第一电池片及所述第二电池片进行层压，包括：
    在所述第一电池片及所述第二电池片的上方设置层压装置，使层压压力经由所述层压装置传递至所述第一电池片及所述第二电池片，所述层压装置包括层压板，所述层压板上设有开槽，所述开槽位于所述重叠区域的上方。
  38. 一种电池组件的制造装置，包括：
    根据权利要求5-33中任一项所述的电池串的制造装置。
  39. 一种电池组件的制造方法，包括：
    采用根据权利要求38所述的电池组件的制造装置获得所述电池组件，其中，所述电池组件包括电池串，所述电池串包括至少两个电池片，所述至少两个电池片包括相邻的第一电池片及第二电池片，
    其中所述至少两个电池片中每个电池片的正反面设有栅线，所述第一电池片第一电池片正面的所述栅线与所述第二电池片反面的所述栅线通过焊带连接，所述第一电池片及所述第二电池片具有重叠区域，所述重叠区域设有覆盖了位于所述重叠区域内的所述焊带的至少一个侧面的缓冲垫，所述缓冲垫由预先设置在所述重叠区域内并经高温融化的垫片形成。
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