CN111477823A - Battery tab, tab PACK processing method, battery finished product and electronic product - Google Patents

Battery tab, tab PACK processing method, battery finished product and electronic product Download PDF

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Publication number
CN111477823A
CN111477823A CN202010346023.3A CN202010346023A CN111477823A CN 111477823 A CN111477823 A CN 111477823A CN 202010346023 A CN202010346023 A CN 202010346023A CN 111477823 A CN111477823 A CN 111477823A
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China
Prior art keywords
battery
tab
shaped structure
circuit board
length
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Chinese (zh)
Inventor
尚亚婷
肖军
党彦伟
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Shenzhen Huixinli Electronic Technology Co ltd
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Shenzhen Huixinli Electronic Technology Co ltd
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Priority to CN202010346023.3A priority Critical patent/CN111477823A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H01M10/0427—Button cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention relates to the technical field of tab processing, and particularly discloses a battery tab, a tab PACK processing method, a battery finished product and an electronic product, wherein the battery tab is of an L-shaped structure, one side of a L-shaped structure is arc-shaped, the other side of the L-shaped structure is rectangular, the arc-shaped part of a L-shaped structure is used for being connected with a current collector of a battery, and the rectangular part of the L-shaped structure is used for being connected with a circuit board of the battery, so that the processing of the tab PACK can be realized by bending the battery tab in a lateral direction and shifting the tab PACK from multiple angles, the problem that the position of a battery core tab of an existing button battery cannot be accurately aligned with the angle of a circuit board pad is solved, the tab PACK processing method provided by the embodiment of the invention adopts the battery tab of the L-shaped structure which can be bent laterally and can be shifted from multiple angles, the tab PACK processing method is.

Description

Battery tab, tab PACK processing method, battery finished product and electronic product
Technical Field
The invention relates to the technical field of tab processing, in particular to a battery tab, a tab PACK processing method, a battery finished product and an electronic product.
Background
With the continuous development of science and technology, a lithium battery (lithium ion battery) is one of the most potential energy storage systems at present and has been widely used due to its advantages of high specific capacity, high energy density, long cycle life, high operating voltage, etc. The tab is a metal conductor which is used for leading out the positive electrode and the negative electrode from the battery cell and plays a role in connection between the battery and an external circuit, and the quality of the tab directly influences the performance stability of the battery. For example, tabs are needed for mobile phone batteries, bluetooth batteries, notebook batteries, and the like used in life.
At present, button batteries are widely applied to various miniature electronic products as common lithium battery products due to small surface area. However, the above technical solutions have the following disadvantages in practical use: the existing button battery is small in surface area, and after a protection plate component (namely an integrated circuit board which mainly plays a protection role for a lithium battery) occupies a certain space, the pad position of the protection plate is small, the arrangement direction is not on a straight line, and the problem that the pad angle cannot be accurately aligned in the tab position of an electric core exists.
Disclosure of Invention
The embodiment of the invention aims to provide a battery tab to solve the problem that the position of the battery core tab of the conventional button battery in the background art cannot accurately align the angle of a circuit board pad.
In order to achieve the purpose, the embodiment of the invention provides the following technical scheme that the battery tab comprises a negative electrode tab and/or a positive electrode tab, the negative electrode tab and the positive electrode tab are both L-shaped structures, one side of the L-shaped structure is arc-shaped, the other side of the L-shaped structure is rectangular, the arc-shaped part of the L-shaped structure is a bent part and is used for being connected with a current collector of a battery, and the rectangular part of the L-shaped structure is a linear part and is used for being connected with a circuit board of the battery.
As a further proposal of the invention, the length of the circular arc part of the L-shaped structure is determined according to the radius size of the battery, and the length of the rectangular part of the L-shaped structure is determined according to the radius size and/or the height size of the battery.
As a further proposal of the invention, the length of the circular arc part of the L-shaped structure is the sum of the radius of the battery and 1-2mm, namely the size of the part welded with the current collector (copper foil) of the battery is the sum of the radius of the battery and 1-2 mm.
The invention further provides a method for determining the length of the L-shaped arc-shaped part of the negative pole tab, which is used for the negative pole tab, wherein the type of the battery (which can be a button battery or other types of lithium batteries) is determined, the diameter of a current collector can be determined according to the known type of the battery, the battery tab is generally welded at the central part of the current collector, and the size of the aluminum foil welding part of the positive pole tab and the battery positive pole current collector is determined in the same way by taking the radius of the battery plus 1.5mm as the size of the copper foil welding part of the negative pole tab and the battery negative pole current collector.
As a still further aspect of the present invention, the length of the rectangular portion of the L-shaped structure is the sum of the length of the arc-shaped portion of the L-shaped structure and the height of the battery.
As a still further scheme of the invention: for the negative pole lug and the positive pole lug, the length of the welding part of the positive pole lug and the circuit board can be determined according to the position and the space of the circuit board, and in order to enable the two pole lugs (the negative pole lug and the positive pole lug) to extend in the same direction and enable the tail ends of the two pole lugs to be aligned, the length of the welding part of the negative pole lug and the circuit board needs to be added with the height of the battery on the basis of the length of the positive pole lug.
As a still further scheme of the invention: the battery includes a cylindrical battery main body and a case disposed outside the battery main body.
As a further proposal of the invention, the length of the circular arc part of the L-shaped structure is 5-20mm, of course, the length can be designed into other ranges according to the actual requirement, and the length is selected according to the requirement, and the invention is not limited in this respect.
As a further proposal of the invention, the length of the rectangular part of the L-shaped structure is 5-80mm, of course, the length can be designed into other ranges according to the actual requirement, and the length is selected according to the requirement, and the invention is not limited in this respect.
As a still further scheme of the invention: the thickness and the material of the battery tab can be reasonably adjusted according to application occasions, and generally, the thickness of the battery tab is adjusted within 0.5-3 mm. Of course, the length of the optical fiber may be designed into other ranges according to actual requirements, and is specifically selected according to the requirements, which is not limited herein.
Preferably, the material of the negative electrode tab is nickel, and the material of the positive electrode tab is aluminum. Of course, other conductive materials may be selected according to actual requirements, and are specifically selected according to requirements, which are not limited herein.
As a still further scheme of the invention: the battery tab can be applied to a soft-package button battery.
Another object of the embodiment of the present invention is to provide a method for processing a tab PACK using the above battery tab, including the following steps:
1) determining the lengths of the negative pole lug and the positive pole lug and/or the installation angle of two pole lugs (the negative pole lug and the positive pole lug) in the battery lugs according to the type of a battery to be processed and the type of a circuit board (which can also be a protection board);
2) and respectively welding the negative pole lug and the positive pole lug according to the installation angle so as to connect the battery with the circuit board to obtain a battery finished product.
As a further proposal of the invention, the lengths of the negative pole tab and the positive pole tab are determined according to the following method that the length of the circular arc part of the L-shaped structure is determined according to the radius of the battery, and the length of the rectangular part of the L-shaped structure is determined according to the radius and/or height of the battery.
As a still further scheme of the invention: the installation angle is determined by determining the length of the negative electrode lug and the positive electrode lug, determining the position of the positive electrode lug, then determining the installation angle according to a wiring scheme on a circuit board and the distance between the negative electrode lug and the welding spot position of the positive electrode lug, namely, assuming the position of the positive electrode lug is not moved, taking the intersection point of the positive electrode lug and the aluminum foil edge of the positive electrode current collector as a starting point, making a string with the length of the distance between the negative electrode lug and the welding spot position of the positive electrode lug, and taking the central angle of the string pair as the installation angle when the negative electrode lug and the positive electrode lug are welded.
According to a further scheme of the invention, the welding of the negative pole lug is to process the negative pole lug into an L-shaped structure, one side of the L-shaped structure is arc-shaped, and the other side of the L-shaped structure is rectangular, and the welding is performed after the position of the negative pole lug is adjusted according to the position of a bonding pad.
According to a further scheme of the invention, the welding of the positive pole lug is to process the positive pole lug into an L-shaped structure, one side of the L-shaped structure is arc-shaped, and the other side of the L-shaped structure is rectangular, and the welding is performed after the position of the positive pole lug is adjusted according to the position of a bonding pad.
As a still further scheme of the invention: utmost point ear PACK processing method is according to the type and the pad position adjustment of the battery of treating processing the position of anodal utmost point ear and weld anodal utmost point ear is to the anodal mass flow body of battery on, then according to the type of the battery of treating processing and the (also can be protection shield) type of circuit board confirm in the battery utmost point ear the negative pole utmost point ear with the length of anodal utmost point ear and two utmost point ears (the negative pole utmost point ear with angle between the anodal utmost point ear), the adjustment the position of negative pole utmost point ear is welded and is welded the negative pole utmost point ear, and two utmost point ears stretch out in same direction after the welding, then weld two utmost point ears on the circuit board.
Another object of the embodiment of the invention is to provide a battery finished product prepared by using the above method for processing tab PACK.
As a still further scheme of the invention: the battery finished product can be a button battery, a columnar battery, or other types of lithium batteries, and is not limited specifically.
Another objective of the present invention is to provide an electronic product, which partially includes the above battery product.
Compared with the prior art, the invention has the beneficial effects that:
the battery tab provided by the embodiment of the invention is of a L-shaped structure, one side of the L-shaped structure is arc-shaped, the other side of the L-shaped structure is rectangular, the arc-shaped part of the L-shaped structure is a bent part and is used for being connected with a current collector of a battery, the rectangular part of the L-shaped structure is a linear part and is used for being connected with a circuit board of the battery, and the processing of the bendable laterally-deviated multi-angle tab PACK can be realized through the battery tab, so that the problem that the position of a battery core tab of an existing button battery cannot be accurately aligned with the angle of a circuit board pad is solved.
Drawings
Fig. 1 is a perspective view of a positive electrode tab of a battery tab according to an embodiment of the present invention.
Fig. 2 is a front view of a positive electrode tab of a battery tab according to an embodiment of the invention.
Fig. 3 is a top view of a positive electrode tab of a battery tab according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram illustrating a battery tab assembled to a battery in a tab PACK processing method according to another embodiment of the present invention.
Fig. 5 is a front view of the battery of fig. 4 with the battery tabs assembled, welded to a circuit board.
Fig. 6 is a perspective view of the battery of fig. 4 with the battery tabs assembled, welded to a circuit board.
Fig. 7 is a schematic structural diagram of a battery tab in a tab PACK processing method according to another embodiment of the present invention before the battery tab is assembled to a battery.
Fig. 8 schematically illustrates a solid view of a button cell provided in another embodiment of the invention before being soldered to a circuit board.
In the figure: 1-positive pole ear; 2-a bend; 3-a straight portion; 4-a circuit board; 5-a battery; 7-a negative electrode tab; 8-a housing; 9-the cell body.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In order to make the technical solution of the present invention clearer, process steps and device structures well known in the art are omitted here.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
A battery tab comprises a positive tab 1, as shown in figures 1-3, the positive tab 1 is L-shaped, one side of L-shaped structure is arc-shaped, the other side of L-shaped structure is rectangular, the arc-shaped part of L-shaped structure is a bending part 2, the rectangular part of L-shaped structure is a straight part 3, the battery tab can be adjusted in position due to the arc-shaped part, and the position adjustment range can be adjusted in a 360-degree rotation mode.
Example 2
The utility model provides a battery tab, includes negative pole utmost point ear 7 and positive pole utmost point ear 1, wherein, positive pole utmost point ear 1's structure is as shown in 1-3, simultaneously, negative pole utmost point ear 7 with positive pole utmost point ear 1 is L shape structure, just one side of L shape structure is circular-arc, the another side is the rectangle, the circular-arc part of L shape structure is flexion 2 for with the mass flow body coupling, the rectangle part of L shape structure is orthoscopic part 3 owing to set up circular-arc part, battery tab can carry out position adjustment, and the position adjustment scope is that 360 rotation that can carry out is adjusted.
Example 3
A method for processing a tab PACK using the battery tab of example 2, as shown in fig. 4 to 7, comprises the steps of:
1) the length of the negative pole tab 7 and the positive pole tab 1 and the installation angle of the two tabs (the installation angle between the negative pole tab 7 and the positive pole tab 1) in the battery tabs are determined according to the type of the battery 5 to be processed and the type of the circuit board 4 (which can also be a protection board), concretely, the size and the position of the negative pole tab 7 and the positive pole tab 1 are determined according to the type of the battery 5 required by a customer, and the length of the arc-shaped part of the L-shaped structure is the sum of the radius of the battery 5 and 1mm, namely, the size L of the part welded with a battery current collector (copper foil)2The radius of the battery 5 is the sum of 1mm, for the negative pole tab 7 and the positive pole tab 1, the length L of the welding part of the positive pole tab 1 and the circuit board 4 can be determined according to the position and the space of the circuit board 41In order to make the two electrode tabs (the negative electrode tab 7 and the positive electrode tab 1) extend in the same direction and have the ends aligned, the length of the welding part of the negative electrode tab 7 and the circuit board 4 needs to be added with the height of the battery 5 on the basis of the length of the positive electrode tab 1Degree (i.e., thickness in the vertical direction);
2) and respectively welding the negative electrode tab 7 and the positive electrode tab 1 according to the installation angle so as to connect the battery 5 and the circuit board 4 to obtain a battery finished product.
In the embodiment of the present invention, the installation angle is determined by determining the length of the negative electrode tab 7 and the positive electrode tab 1, determining the position of the positive electrode tab 1, and then determining the installation angle according to the wiring scheme on the circuit board 4 and the distance between the welding points of the negative electrode tab 7 and the positive electrode tab 1, that is, assuming the position of the positive electrode tab 1 to be fixed, taking the intersection point of the positive electrode tab 1 and the aluminum foil edge of the positive electrode current collector as a starting point, making a chord with the length being the distance between the welding points of the negative electrode tab 7 and the positive electrode tab 1, and the central angle subtended by the chord is the installation angle when the negative electrode tab 7 and the positive electrode tab 1 are welded.
In the embodiment of the present invention, the welding step is to adjust the position of the positive electrode tab 1 according to the type of the battery 5 to be processed and the position of the pad, weld the positive electrode tab 1 to the positive electrode current collector of the battery 5, determine the length of the negative electrode tab 7 and the positive electrode tab 1 in the battery tab and the angle between the two tabs (the negative electrode tab 7 and the positive electrode tab 1) according to the type of the battery 5 to be processed and the type of the circuit board 4 (which may also be a protection board), adjust the position of the negative electrode tab 7, weld the negative electrode tab 7, and obtain a three-dimensional model after welding as shown in fig. 4, wherein the two tabs after welding extend in the same direction, and then weld the two electrode tabs to the circuit board 4, wherein the plan view of the finished product after welding is shown in fig. 5, and the corresponding perspective view is shown in fig. 6.
Example 4
In embodiment 3, the battery 5 includes a columnar battery main body 9 and a case 8 disposed outside the battery main body 9, and the specific structure is shown in fig. 7.
Example 5
Compared with example 3, the length of the arc-shaped part of the L-shaped structure is the radius of the battery 5 plus 1mm, namely, the length of the current collector (copper foil) of the batteryDimension L of the welded portion2The radius of the battery 5 was the same as that of example 3 except that the sum of the radius was 1 mm.
Example 6
A processing method of a pole lug PACK comprises the following steps:
s11, welding the CR2477 button cell with the diameter of 24.5mm and the height of 7.7mm on a small circuit board 4, specifically, firstly, according to the diameter of 24.5mm, the radius of the CR2477 button cell is 12.25mm, so the length L of the arc-shaped part of the negative pole tab 7 (or the positive pole tab 1) welded with the button cell2Is 13.75 mm.
S12, according to the position of the welding spot of the circuit board 4, determining that the length of the positive pole tab 1 required from the positive pole surface of the button battery to the welding spot is 12mm, so that the length L of the straight part 3 (aluminum tape) for welding the positive pole tab 1 of the button battery is L1The length of the welded portion between the linear portion 3 (nickel band) of the negative electrode tab 7 and the circuit board 4 is 19.7mm, which corresponds to 12 mm.
S13: and finally determining the angle between the two lugs to be 75 degrees according to the positions of welding points of the two lugs of the circuit board 4.
S14: based on the above steps, the negative electrode tab 1 and the positive electrode tab 7 are respectively welded to connect the button cell with the circuit board 4, so as to obtain a finished battery product, as shown in fig. 6.
Example 7
A processing method of a pole lug PACK comprises the following steps:
s11, welding the soft-package button battery with the diameter of 18.4mm and the height of 9.4mm on a small circuit board 4, specifically, firstly, according to the diameter of 18.4mm, the radius of the button battery is 9.2mm, so the length L of the arc-shaped part of the negative pole tab 7 (or the positive pole tab 1) welded with the button battery2Is 10.7 mm.
S12: because the button cell is a specially made cell, two pole lugs of the button cell extend out from the middle part of the button cell in the thickness direction, the distances between the two pole lugs and the circuit board are equal and are 14.7 mm.
S13: and finally determining the angle between the two lugs to be 60 degrees according to the positions of welding points of the two lugs of the circuit board 4.
S14: and respectively welding the negative electrode tab 1 and the positive electrode tab 7 based on the steps so as to connect the button battery with the circuit board 4 to obtain a battery finished product.
Example 8
A processing method of a pole lug PACK comprises the following steps:
s11, welding the 1042 type soft-package button battery with the diameter of 10.5mm and the height of 4.2mm on a small circuit board 4, specifically, firstly, according to the diameter of 10.5mm, the radius of the button battery is 5.25mm, so the length L of the arc-shaped part of the negative pole tab 7 (or the positive pole tab 1) welded with the button battery2Is 6.75 mm.
S12, according to the position of the welding spot of the circuit board 4, determining that the length of the positive pole tab 1 required from the positive pole surface of the button battery to the welding spot is 4mm, so that the length L of the straight part 3 (aluminum tape) for welding the positive pole tab 1 of the button battery is L14mm, the length of the welded portion between the straight portion 3 (nickel band) of the negative electrode tab 7 and the circuit board 4 is 8.4 mm.
S13: and finally determining the angle between the two lugs to be 50 degrees according to the positions of welding points of the two lugs of the circuit board 4.
S14: based on the above steps, the negative electrode tab 1 and the positive electrode tab 7 are respectively welded to connect the button cell with the circuit board 4, so as to obtain a finished battery product, as shown in fig. 6.
Example 9
The same as example 8 except that the type of pouch button cell was 1036 type pouch button cell, compared to example 8.
Example 10
A processing method of a pole lug PACK comprises the following steps:
s11, welding the 1254 type soft package button with the diameter of 12.6mm and the height of 5.4mm on a small circuit board 4, specifically, firstly, according to the diameter of the button battery of 12.6mm, the radius of the button battery is 6.3mm, so the length L of the arc-shaped part of the negative pole tab 7 (or the positive pole tab 1) welded with the button battery2Is 7.8 mm.
S12, according to the position of the welding spot of the circuit board 4, determining that the length of the positive pole tab 1 required from the positive pole surface of the button battery to the welding spot is 6mm, so that the length L of the straight part 3 (aluminum tape) for welding the positive pole tab 1 of the button battery is L1The length of the welded portion between the straight portion 3 (nickel band) of the negative electrode tab 7 and the circuit board 4 is 11.4mm, which corresponds to 6 mm.
S13: and finally determining the angle between the two lugs to be 60 degrees according to the positions of welding points of the two lugs of the circuit board 4.
S14: based on the above steps, the negative electrode tab 1 and the positive electrode tab 7 are respectively welded to connect the button cell with the circuit board 4, so as to obtain a finished cell product, and the structure before welding is shown in fig. 8.
Example 11
The same as example 10 except that the type of the pouch button cell was 1255 type pouch button cell, compared to example 10.
Example 12
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 5mm, the length of the rectangular portion of the L-shaped structure was 5mm, and the thickness of the battery tab was 0.5mm, as compared with example 2.
Example 13
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 20mm, the length of the rectangular portion of the L-shaped structure was 80mm, and the thickness of the battery tab was 3mm, as compared to example 2.
Example 14
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 11mm, the length of the rectangular portion of the L-shaped structure was 30mm, and the thickness of the battery tab was 1.2mm, compared to example 2.
Example 15
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 15mm, the length of the rectangular portion of the L-shaped structure was 60mm, and the thickness of the battery tab was 0.8mm, as compared to example 2.
Example 16
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 17mm, the length of the rectangular portion of the L-shaped structure was 20mm, and the thickness of the battery tab was 2.3mm, as compared to example 2.
Example 17
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 19mm, the length of the rectangular portion of the L-shaped structure was 72mm, and the thickness of the battery tab was 0.5mm, as compared with example 2.
Example 18
The same as example 2, except that the length of the circular arc-shaped portion of the L-shaped structure was 8mm, the length of the rectangular portion of the L-shaped structure was 38mm, and the thickness of the battery tab was 0.9mm, compared to example 2.
The invention has the following beneficial effects:
1) the battery tab provided by the embodiment of the invention can realize a processing mode of a bendable laterally-offset multi-angle tab PACK, and solves the problems that the surface area of a button battery is small, after a protective plate component occupies a certain space, the position of a bonding pad is small, the arrangement direction is not on the same straight line, and the position of a battery core tab cannot accurately align the angle of the bonding pad; what need to explain is that button cell is because of surface area is little, and after protection shield components and parts occupy certain space, the pad position is less and the direction of arranging is not on a straight line, requires electric core utmost point ear position accurate alignment pad angle, otherwise utmost point ear needs the lateral bending to move to the pad, influences welding reliability and because of the operation difficulty, reduces production efficiency, and the pin of other components and parts is touched easily still to the serious, causes protection shield performance inefficacy or the outside short circuit of electric core.
2) The battery tab PACK processing method provided by the embodiment of the invention adopts the battery tab with the L-shaped structure, the tab with the specific shape can solve the problem that the battery tab cannot be accurately aligned with the bonding pad due to the fact that the bonding pad is smaller in position and the arrangement direction is not on a straight line after a protective plate component occupies a certain space because the surface area of a button battery is small, and the structure of the battery tab is different from that of a common tab in the tab PACK processing method, so that the tab fixing step is required after welding, and other steps can be carried out after the step is completed.
3) The processing method of the battery tab PACK provided by the embodiment of the invention can also solve the industrial technical problems that the tab needs to be laterally bent and moved to a bonding pad when a button battery is welded, the operation is difficult, the welding reliability is poor, and the production efficiency is low.A current processing method is to weld the tab in a protective plate with a smaller area, and the pin of other components is easily touched to cause the performance failure of the protective plate or the external short circuit of a battery core, while the battery tab adopting a L-shaped structure (one side of the L-shaped structure is circular arc, and the other side is rectangular), because the battery tab can be laterally bent and the position of an aluminum sheet or a nickel sheet (a positive electrode tab) can be changed at multiple angles, the problem that the tab position is not good for welding the plate due to the deviation of the winding consistency is solved, the battery tab PACK processing method is also suitable for different.
It should be noted that the battery tab provided by the embodiment of the present invention can flexibly change the position of the battery tab (nickel sheet or aluminum sheet), so that the welding work is easier, the problems of non-uniform tab position and poor welding caused by winding consistency deviation are solved, and the battery tab PACK provided by the embodiment of the present invention is also applicable to the protection plate wiring scheme required by different customers.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Those skilled in the art can make possible changes and modifications to the invention using the above disclosed methods and techniques, or to modify equivalent embodiments without departing from the scope of the invention, without affecting the spirit of the invention. As currently used picosecond laser cutters capable of cutting glass, more advanced glass laser machines have been developed in the future. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims (10)

1. A battery tab is characterized by comprising a negative electrode tab and/or a positive electrode tab, wherein the negative electrode tab and the positive electrode tab are both L-shaped structures, one side of the L-shaped structure is arc-shaped, and the other side of the L-shaped structure is rectangular, and the negative electrode tab and the positive electrode tab can rotate along the sideline of a battery to adjust the position;
the circular arc-shaped part of the L-shaped structure is a bent part and is used for being connected with a current collector of a battery, and the rectangular part of the L-shaped structure is a straight part and is used for being connected with a circuit board of the battery.
2. The battery tab of claim 1 wherein the arcuate portion of the L-shaped structure has a length that is determined based on a radius of the battery and the rectangular portion of the L-shaped structure has a length that is determined based on a radius and/or a height of the battery.
3. The battery tab as claimed in claim 1, wherein the battery includes a cylindrical battery body and a housing disposed outside the battery body.
4. The battery tab as claimed in claim 1, wherein the bent portion has a length of 5-20 mm.
5. The battery tab as claimed in claim 1, wherein the length of the straight portion is 5-80 mm.
6. The battery tab as claimed in claim 1, wherein the thickness of the battery tab is 0.5-3 mm.
7. A tab PACK processing method using the battery tab as claimed in any one of claims 1 to 6, comprising the steps of:
1) determining the installation angle between the negative pole lug and the positive pole lug according to the type of a battery to be processed and the type of a circuit board;
2) and respectively welding the negative pole lug and the positive pole lug according to the installation angle so as to connect the battery with the circuit board to obtain a battery finished product.
8. The tab PACK processing method according to claim 7, wherein the mounting angle is determined according to a wiring scheme on a circuit board and a distance between positions of the welding points of the negative electrode tab and the positive electrode tab.
9. A battery finished product prepared by the method for processing the pole lug PACK as claimed in any one of claims 7 to 8.
10. An electronic product comprising, in part, the finished battery of claim 9.
CN202010346023.3A 2020-04-27 2020-04-27 Battery tab, tab PACK processing method, battery finished product and electronic product Pending CN111477823A (en)

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* Cited by examiner, † Cited by third party
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CN112467261A (en) * 2020-11-24 2021-03-09 东莞新能德科技有限公司 Battery and device using battery
CN112510303A (en) * 2020-12-02 2021-03-16 新余赣锋电子有限公司 Button cell and electrode assembly connecting method thereof
CN114006021A (en) * 2021-10-29 2022-02-01 宁德新能源科技有限公司 Electrochemical device and electric equipment
CN114824593A (en) * 2022-05-25 2022-07-29 东莞新能德科技有限公司 Electrochemical device and electric equipment

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Publication number Priority date Publication date Assignee Title
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CN201910454U (en) * 2010-12-20 2011-07-27 吴平东 Battery tab for button battery
CN206084182U (en) * 2016-09-19 2017-04-12 珠海市嘉德电能科技有限公司 L type welding nickel piece
CN206401441U (en) * 2016-12-30 2017-08-11 重庆市紫建电子有限公司 A kind of button cell
US20190348661A1 (en) * 2017-01-04 2019-11-14 Samsung Sdi Co., Ltd. Battery pack

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Publication number Priority date Publication date Assignee Title
JP3575247B2 (en) * 1997-10-28 2004-10-13 松下電工株式会社 Button battery holding structure and wireless transmitter using the same
CN201910454U (en) * 2010-12-20 2011-07-27 吴平东 Battery tab for button battery
CN206084182U (en) * 2016-09-19 2017-04-12 珠海市嘉德电能科技有限公司 L type welding nickel piece
CN206401441U (en) * 2016-12-30 2017-08-11 重庆市紫建电子有限公司 A kind of button cell
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Publication number Priority date Publication date Assignee Title
CN112467261A (en) * 2020-11-24 2021-03-09 东莞新能德科技有限公司 Battery and device using battery
CN112510303A (en) * 2020-12-02 2021-03-16 新余赣锋电子有限公司 Button cell and electrode assembly connecting method thereof
CN114006021A (en) * 2021-10-29 2022-02-01 宁德新能源科技有限公司 Electrochemical device and electric equipment
CN114824593A (en) * 2022-05-25 2022-07-29 东莞新能德科技有限公司 Electrochemical device and electric equipment
CN114824593B (en) * 2022-05-25 2024-05-17 东莞新能德科技有限公司 Electrochemical device and electric equipment

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Application publication date: 20200731