阅读说明：本技术 一种蓝牙耳机电池防止断正极耳的制造方法 (Manufacturing method for preventing positive ear from being broken of battery of Bluetooth headset ) 是由 朱介丁 肖又伍 杨琴 于 2019-09-19 设计创作，主要内容包括：本发明公开了一种蓝牙耳机电池防止断正极耳的制造方法,正极片超焊使用激光铝转镍的极耳,所述极耳一头是纯铝带,一头是纯镍带,极耳胶设置在纯铝带和纯镍带之间,激光铝转镍部分在极耳胶内,将正极片超焊使用激光铝转镍的极耳焊接在正极片上；顶侧封工艺结束,其出来的正负极都是纯镍带且都是镍极耳,激光转镍部分在电池铝塑膜内部。本发明的优点是：由于电池使用了激光转镍的极耳,同时激光转镍部分在电池铝塑膜内部,正极耳出来的部分全部镍带,因此没有铝带在电池外部,杜绝了正极耳在整个电池制作以及后续PACK过程中断极耳的可能,降低了电池制造成本。(The invention discloses a manufacturing method for preventing a Bluetooth headset battery from breaking a positive plate, wherein a positive plate is welded with a tab which is subjected to nickel conversion by laser aluminum in a super-welding mode, one end of the tab is a pure aluminum belt, the other end of the tab is a pure nickel belt, tab glue is arranged between the pure aluminum belt and the pure nickel belt, the laser aluminum nickel conversion part is arranged in the tab glue, and the positive plate is welded on the positive plate by the laser aluminum nickel conversion tab in the super-welding mode; and (4) finishing the top side sealing process, wherein the anode and the cathode are pure nickel belts and nickel lugs, and the laser nickel conversion part is arranged in the battery aluminum plastic film. The invention has the advantages that: because the battery uses the tab of the laser conversion nickel, the laser conversion nickel part is arranged inside the battery aluminum plastic film, and the part of the nickel strip coming out of the positive tab is completely nickel strip, no aluminum strip is arranged outside the battery, the possibility that the positive tab is interrupted in the whole battery manufacturing and the subsequent PACK process is eliminated, and the battery manufacturing cost is reduced.)

1. A manufacturing method for preventing a positive lug of a Bluetooth headset battery from being broken is characterized by comprising the following steps:

(1) the method comprises the following steps that a laser aluminum-nickel-converted lug is used for super-welding of a positive plate, one end of the lug is a pure aluminum belt, the other end of the lug is a pure nickel belt, lug glue is arranged between the pure aluminum belt and the pure nickel belt, most of the lug glue is a nickel belt, the laser aluminum-nickel-converted part is arranged in the lug glue, and the laser aluminum-nickel-converted part is close to the aluminum belt;

(2) the glue height of the tab in the tab of the positive plate super-welding using laser aluminum to convert nickel is 6.0MM, and the length of the laser to convert nickel connecting part is 1 MM;

(3) the method is characterized in that the positive plate is welded on the positive plate by using a laser aluminum-to-nickel tab in a super-welding mode, and specifically comprises the following steps: the pure aluminum strip on the tab is welded at the position of the empty foil of the battery positive plate, the bottom of the tab adhesive is flush with the edge of the positive plate, and after winding is finished, the laser nickel-converting part of the aluminum tab is positioned in the diaphragm; during the encapsulation of top seal, guarantee to seal effectively and glue the fusing with plastic-aluminum membrane utmost point ear is glued to the utmost point ear of pure nickel band portion, guarantee the fastness of top seal, prevent to seal to the laser and change nickel utmost point ear and glue the part and cause the top seal weeping.

(4) And (4) finishing the top side sealing process, wherein the anode and the cathode are pure nickel belts and nickel lugs, and the laser nickel conversion part is arranged in the battery aluminum plastic film.

Technical Field

The invention relates to the field of lithium ion batteries, in particular to a method for manufacturing a Bluetooth headset battery capable of preventing a positive ear from being broken.

Background

The lithium ion battery is a novel high-performance storage battery which is developed rapidly in the last decade, has small volume, light weight and high energy density, is widely applied to electronic appliances such as Bluetooth earphones, mobile communication, cameras, notebook computers and the like, gradually expands the fields of electric bicycles, electric automobiles, satellite positioning systems and national defense, and is a new generation high-energy battery with the greatest development prospect and market space.

The common method in the lithium ion battery manufacturing industry at present is as follows: the lithium ion battery for the Bluetooth earphone generally uses a tab with the width of 1.5MM-2.0MM, the positive electrode uses a pure aluminum strip with the thickness of 0.1MM, the aluminum strip is welded on the positive plate when the positive electrode is manufactured, the aluminum strip is also used for an exposed department, and as shown in figure 1, the welded positive plate is schematically shown in figure 1, 1 is the pure aluminum strip, 2 is the pure nickel strip, and 10 is the pure aluminum strip provided with the tab glue.

And (3) reserving positive and negative electrode lugs after top side sealing is finished, wherein the lengths of the lugs are about 6-10 MM, the positive electrode lug is made of pure aluminum, the negative electrode lug is made of pure nickel, and the lugs are small in width, thin in thickness and poor in bending resistance of an aluminum belt, so that the situation of breakage of the positive electrode aluminum lug is easily caused in the subsequent battery manufacturing process, and the battery is scrapped, as shown in fig. 2, the battery is structurally schematic after top sealing is finished.

Meanwhile, the positive lug needs to be changed into nickel by aluminum before the battery is delivered, so that the aluminum cutting lug needs to be added, the laser is changed into nickel, the laser of the bent aluminum lug is changed into the nickel part to the top sealing groove, the laser is changed into the process of insulating and fixing the nickel part, a plurality of processes need to be added to realize the aluminum-to-nickel conversion, a plurality of operating devices and operating personnel need to be added, the production period of the battery is prolonged, and the labor cost and the equipment cost of battery production are greatly improved.

Disclosure of Invention

Aiming at the defects of the method, the invention provides the manufacturing method for preventing the positive ear from being broken of the battery of the Bluetooth earphone, the method does not need the subsequent aluminum-to-nickel process of the finished battery, and the positive ear and the negative ear come out when the top side sealing is finished are nickel belts, so that the possibility of breaking the positive ear is thoroughly avoided.

The invention is realized in such a way that a manufacturing method for preventing a positive ear from being broken of a battery of a Bluetooth headset is characterized by comprising the following steps:

(1) firstly, when the positive plate is subjected to super-welding, the positive plate uses a laser aluminum-to-nickel tab, one end of the tab is a pure aluminum belt, the other end of the tab is a pure nickel belt, tab glue is arranged between the pure aluminum belt and the pure nickel belt, most of the tab glue is a nickel belt, the laser aluminum-to-nickel part is in the tab glue, and the laser aluminum-to-nickel part is close to the aluminum belt;

(2) the glue height of the tab in the tab of the positive plate super-welding using laser aluminum to convert nickel is 6.0MM, and the length of the laser to convert nickel connecting part is 1 MM;

(3) the method is characterized in that the positive plate is welded on the positive plate by using a laser aluminum-to-nickel tab in a super-welding mode, and specifically comprises the following steps: the pure aluminum strip on the tab is welded at the position of an empty foil of the battery positive plate, meanwhile, the bottom of the tab adhesive is flush with the edge of the positive plate, the winding is carried out according to the lithium ion process flow after the battery positive plate is manufactured, and the laser nickel-converting part of the aluminum tab is positioned inside the diaphragm after the winding is finished; during the encapsulation of top seal, guarantee to seal effectively and glue the fusing with plastic-aluminum membrane utmost point ear is glued to the utmost point ear of pure nickel band portion, guarantee the fastness of top seal, prevent to seal to the laser and change nickel utmost point ear and glue the part and cause the top seal weeping.

(4) And (4) finishing the top side sealing process, wherein the anode and the cathode are pure nickel belts and nickel lugs, and the laser nickel conversion part is arranged in the battery aluminum plastic film.

The battery of the Bluetooth headset can also be applied to batteries with all winding structures.

Most of the tab glue is a nickel strip, the laser aluminum-to-nickel part is in the tab glue, and the laser aluminum-to-nickel part is close to the aluminum strip, so that the tab glue is completely different from the common practice in the original lithium battery industry.

The height of tab glue in the tab of the invention for the super-welding of the positive plate by using laser aluminum to convert nickel is 6.0MM, the length of the laser nickel-converting connecting part is 1MM, and the function is as follows: the normal utmost point ear is the high utmost point ear of 5MM glue, does not seal the strap of utmost point ear in just so can guaranteeing anodal top seal, but because laser changes the utmost point ear structure of holding between the fingers special, laser changes nickel connecting portion length to be 1MM can not be as effective welding area, but this region also contains utmost point ear glue because the strap of utmost point ear is not sealed to the actual height of gluing when can guarantee anodal top seal 5+ 1.

The invention has the advantages that: because the battery uses the tab of the laser nickel conversion, the laser nickel conversion part is arranged inside the battery aluminum plastic film, and the part of the nickel strip coming out of the positive tab is completely nickel strip, therefore, no aluminum strip is arranged outside the battery, the possibility that the positive tab is interrupted in the whole battery manufacturing process and the subsequent PACK process is avoided, meanwhile, the method reduces the operation of aluminum nickel conversion, reduces the operation that the tab is bent to the top sealing groove, the operation of aluminum nickel conversion for fixing and insulating, reduces the battery manufacturing process, improves the production efficiency of the battery, and reduces the battery manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of a positive electrode sheet after welding in the background art of the present invention.

Fig. 2 is a schematic diagram of a battery structure after the battery top sealing in the background art of the present invention is completed.

Fig. 3 is a schematic diagram of a tab structure of the positive plate super-welding using laser aluminum to nickel conversion.

Fig. 4 is a schematic structural view of the positive plate welded with the tab of the present invention.

Fig. 5 is a schematic view of a top-sealed end cell structure according to the present invention.

In the figure, a pure aluminum strip 1, a pure nickel strip 2, tab glue 3, a laser aluminum-to-nickel conversion part 4, a positive plate 5, a positive nickel strip 6, a negative nickel strip 7, battery aluminum plastic film inner parts 8,9 are positive laser to nickel, and 10 are aluminum strips provided with tab glue.

Detailed Description

The following description will be provided in detail with reference to the accompanying drawings, which are not intended to limit the present invention, and all similar structures and similar variations using the present invention shall fall within the scope of the present invention.

The invention as shown in fig. 3-5 is operated and implemented in such a way that the method for manufacturing the battery of the bluetooth headset for preventing the positive pole ear from being broken is characterized by comprising the following steps:

(1) the method comprises the following steps that laser aluminum-nickel-converted tab is used for super-welding of a positive plate, one end of the tab is a pure aluminum strip 1, the other end of the tab is a pure nickel strip 2, tab glue 3 is arranged between the pure aluminum strip 1 and the pure nickel strip 2, most of the tab glue 3 is a nickel strip, a laser aluminum-nickel-converted part 4 is arranged in the tab glue, and the laser aluminum-nickel-converted part 4 is close to the aluminum strip 1;

(2) the glue height of the tab in the tab of the positive plate super-welding using laser aluminum to convert nickel is 6.0MM, and the length of the laser to convert nickel connecting part is 1 MM;

(3) the positive plate is welded on the positive plate 5 by the electrode lug which is welded by the laser aluminum-to-nickel converter, and the method specifically comprises the following steps: the pure aluminum strip 1 on the tab is welded at the position of an empty foil of the battery positive plate, meanwhile, the bottom of the tab glue 3 is flush with the edge of the positive plate, and after winding is finished, the laser nickel-conversion part of the aluminum tab is positioned in the diaphragm; during the encapsulation of top seal, guarantee to seal effectively and glue the fusing with plastic-aluminum membrane utmost point ear is glued to the utmost point ear of pure nickel band portion, guarantee the fastness of top seal, prevent to seal to the laser and change nickel utmost point ear and glue the part and cause the top seal weeping.

(4) And after the top side sealing process is finished, the outgoing positive electrode nickel strip 6 and negative electrode nickel strip 7 are both nickel electrode lugs, the outgoing pure nickel strips are both nickel electrode lugs, and the laser nickel conversion part 2 is arranged in the battery aluminum plastic film 8.