CN114171776B

CN114171776B - Batteries and electronic devices

Info

Publication number: CN114171776B
Application number: CN202111679673.0A
Authority: CN
Inventors: 厉成北; 朱杰; 王智峰; 陈龙云; 卫志达; 章辉; 席阳; 彭宁
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2025-05-06
Anticipated expiration: 2041-12-31
Also published as: CN114171776A

Abstract

The invention provides a battery and electronic equipment, wherein a marking part is arranged on the outer side wall of the battery, and a preset angle is formed between the radial extension direction of a shell of at least part of second tabs and the plane formed by the central line of the radial extension direction of the shell of at least part of first tabs and the central line of the marking part along the axial direction of the shell. The battery and the electronic equipment provided by the embodiment of the invention can easily and accurately determine the position of the second lug of the battery, and further package the battery, so that the electrical performance of the battery is improved, and the safety use risk is reduced.

Description

Battery and electronic equipment

Technical Field

The present disclosure relates to battery technology, and particularly to a battery and an electronic device.

Background

A battery refers to a device that converts chemical energy into electrical energy in a cup, tank, or other container or portion of a space of a composite container that contains an electrolyte solution and metal electrodes to generate an electrical current. Taking a button cell as an example, the external shape of the button cell is similar to that of a button, and the button cell is generally larger in diameter and thinner in thickness, so that the button cell is widely applied to electronic equipment such as electronic watches, bluetooth headphones and electric toys.

The shell of button cell is stainless steel, and the negative pole ear is nickel, and the metal casing of stainless steel and the negative pole ear of nickel are magnetized easily, so need find the negative pole ear position and carry out processing such as screen magnetism to negative pole ear position department when carrying out processing equipment to the battery, nevertheless negative pole ear is located inside the metal casing generally, can not use naked eye to confirm the position of negative pole ear. In the related art, the position of the negative electrode lug is generally determined by using X-rays and marked.

However, the method for determining the position of the negative electrode lug by using the X-rays is complex in process, and the accuracy of determining the position of the negative electrode lug is low, and in addition, safety risks are caused to operators.

Disclosure of Invention

The invention provides a battery and electronic equipment, which can easily and accurately determine the position of a second lug of the battery, and further package the battery, so that the electrical performance of the battery is improved, and the safety use risk is reduced.

The embodiment of the invention provides a battery, which comprises a shell and a battery cell, wherein the shell is provided with an accommodating cavity, and the battery cell is positioned in the accommodating cavity;

the shell comprises a shell body and a top cover which is connected with the shell body in an insulating way;

the battery cell comprises a battery cell body, a first tab and a second tab, wherein the first tab and the second tab are connected with the battery cell body, the first tab is electrically connected with the top cover, at least part of the first tab extends along the radial direction of the shell, the second tab is electrically connected with the shell, and at least part of the second tab extends along the radial direction of the shell;

The outer side wall of the shell is provided with a marking part, and a preset angle is formed between the central line of at least part of the second lugs in the radial extending direction of the shell and the plane formed by the central line of at least part of the first lugs in the radial extending direction of the shell and the central line of the marking part in the axial direction of the shell.

According to the battery provided by the embodiment of the invention, the first tab of the battery core is electrically connected with the top cover, at least part of the first tab extends along the radial direction of the shell, the second tab of the battery core is electrically connected with the shell, at least part of the second tab extends along the radial direction of the shell, the marking part is arranged on the shell of the battery, the central axis of the marking part along the axial direction of the shell is positioned on the same plane as the central line of the first tab on the top cover in the extending direction, and the central line of the second tab on the shell in the radial direction of the shell has a preset angle with the plane. Therefore, the position of the second lug inside the shell can be determined according to the preset angle through the central axis of the marking part on the shell along the axial direction of the shell, namely, the radial position of the preset angle of the bottom of the shell of the plane formed by the central axis of the marking part along the axial direction of the shell and the central axis of the first lug on the top cover along the radial extending direction of the shell is the projection position of the second lug on the bottom of the shell.

In one possible embodiment, the marking is raised or recessed.

In one possible embodiment, the device further comprises a first insulating member;

The first insulating piece is arranged on the bottom surface of the shell, and the first insulating piece covers the orthographic projection of at least part of the second lugs on the bottom surface of the shell.

In one possible embodiment, the first insulator is scalloped and the scalloped angle of the first insulator is 180 ° -270 °.

In one possible embodiment, the predetermined angle is between 0 ° and 90 °.

In one possible embodiment, the device further comprises a first adapter;

The first adapter is electrically connected with the top cover.

In one possible embodiment, the first pin of the first adapter is located on an outer side of the housing;

The second insulator is arranged between the first pin and the outer side wall of the shell.

In one possible embodiment, the device further comprises a second adapter;

the second adapter is electrically connected with the housing.

In one possible embodiment, the second pin of the second adapter is located on an outer side of the housing, and the second insulator is disposed between the second pin and an outer side wall of the housing.

In one possible embodiment, the housing includes a bottom shell and a cover plate, and the bottom shell and the cover plate enclose the accommodating cavity;

The cover plate is welded with the bottom shell, the top cover is arranged on the cover plate, and the top cover is connected with the cover plate in an insulating mode.

Another aspect of an embodiment of the present invention provides an electronic device, including an electronic device main body and a battery as described above;

The battery is disposed on the electronic device body, and the battery is electrically connected to the electronic device.

In the electronic device provided by the embodiment of the invention, the first tab of the battery is electrically connected with the top cover in the battery, at least part of the first tab extends along the radial direction of the shell, the second tab of the battery is electrically connected with the shell, at least part of the second tab extends along the radial direction of the shell, the marking part is arranged on the shell of the battery, the central axis of the marking part along the axial direction of the shell and the central axis of the marking part along the extending direction of the first tab on the top cover are positioned on the same plane, and the central axis of the second tab on the shell along the radial direction of the shell and the plane have a preset angle. Therefore, the position of the second lug inside the shell can be determined according to the preset angle through the central axis of the marking part on the shell along the axial direction of the shell, namely, the radial position of the preset angle of the bottom of the shell of the plane formed by the central axis of the marking part along the axial direction of the shell and the central axis of the first lug on the top cover along the radial extending direction of the shell is the projection position of the second lug on the bottom of the shell.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic view of a perspective structure of a battery according to an embodiment of the invention;

Fig. 2 is another schematic view of a perspective structure of a battery according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an appearance structure of a battery according to an embodiment of the invention;

Fig. 4 is another view schematically illustrating an appearance structure of a battery according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a battery according to an embodiment of the present invention;

FIG. 6 is a flowchart illustrating steps of a method for manufacturing a battery according to an embodiment of the present invention;

Fig. 7 is an operation diagram corresponding to the steps in fig. 6.

Reference numerals illustrate:

100-battery, 10-shell, 11-holding cavity;

12-shell, 121-mark part, 122-bottom shell;

123-cover plate, 13-top cover and 131-liquid injection hole;

20-cell, 21-cell body, 211-center hole;

22-first tab, 23-second tab, 30-first insulator;

40-identification mark, 50-second adapter, 51-second pin;

60-first adapter, 61-first pin, 70-second insulator;

80-sealing cover and 90-laser beam.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The battery provided by the embodiment of the invention can be a button battery, a columnar battery, a special-shaped battery or other types of batteries, and the button battery is taken as an example for illustration in the embodiment of the invention.

The button battery has the advantage of smaller size, is widely applied to various miniature electronic devices, has the diameter of 4.8mm to 30mm and the thickness of 1mm to 7.7mm, and is generally used for backup power supplies of various electronic devices, such as computer mainboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys, cardiac pacemakers and the like. Button cells are mainly characterized in that positive electrode materials and negative electrode materials in a cell cavity are subjected to chemical reaction in electrolyte, so that electric energy is generated.

In general, the casing of the button cell is made of stainless steel, the negative electrode lug is made of nickel, and the metal casing made of stainless steel and the negative electrode lug made of nickel are easily magnetized, so that when the cell is processed and assembled, the position of the negative electrode lug needs to be found, screen magnetic treatment is performed on the position of the negative electrode lug, and then the bottom wall of the cell is welded with a switching sheet and other operations. However, the negative electrode tab is generally located inside the metal casing, and the position of the negative electrode tab cannot be determined with naked eyes. In the related art, the position of the negative electrode lug is generally determined by adopting X-rays and then manually scribing is performed, the operation process is complex, the position of the negative electrode lug is not accurately positioned, and in addition, safety risks are caused to operators.

In view of the foregoing, an embodiment of the present invention provides a battery and an electronic device, where a first tab of a battery core in the battery is electrically connected to a top cover of a housing, at least a portion of the first tab extends along a radial direction of the housing, a second tab of the battery core is electrically connected to a shell of the housing, and at least a portion of the second tab extends along a radial direction of the housing. Therefore, the position of the second lug in the shell can be determined along the central axis of the shell in the axial direction according to the preset angle through the marking part on the shell, namely the radial position of the preset angle of the bottom of the shell, which is the plane formed by the central axis of the marking part in the axial direction of the shell and the central line of the first lug on the top cover in the extending direction, is the projection position of the second lug at the bottom of the shell.

The battery and the electronic device provided by the embodiment of the invention are described in detail below with reference to the accompanying drawings and the specific embodiments.

Fig. 1 is a schematic view of a perspective structure of a battery 100 according to an embodiment of the present invention, and fig. 2 is another schematic view of a perspective structure of a battery 100 according to an embodiment of the present invention, and, as shown in fig. 1 and fig. 2, the battery 100 according to an embodiment of the present invention includes a housing 10 and a battery cell 20. The housing 10 has a housing cavity 11, and the battery cell 20 is disposed in the housing cavity 11. The housing 10 includes a case 12 and a top cover 13 connected to the case 12 in an insulating manner.

The battery cell 20 may be a rolled core type battery cell 20, and includes a battery cell body 21, and a first tab 22 and a second tab 23 connected to the battery cell body 21, where the battery cell body 21 is formed by sequentially stacking a positive electrode sheet (not shown in the figure), a separator (not shown in the figure), and a negative electrode sheet (not shown in the figure) and winding from one end to the other end, and the battery cell body 21 has a central hole 211. An end surface insulating layer is arranged on at least one side of the battery cell body 21, which is close to the inner top surface of the shell 10, and at least one side of the battery cell body 21, which is close to the inner bottom surface of the shell 10, so that the battery cell 20 and the shell 10 cannot form a complete passage. Of course, the battery cell 20 provided in the embodiment of the present invention is not limited to the above example, and may be a laminated winding core.

The first tab 22 is electrically connected to the top cover 13, and at least part of the first tab 22 extends in the radial direction of the housing 10, as shown in fig. 1 and 2, for example, in the drawings of the present invention, a part of the first tab 22 extends in the axial direction of the housing 10, another part extends in the radial direction of the housing 10 is illustrated as an example, and a part of the first tab 22 is led out from the end of the positive plate, extends in the axial direction of the housing 10, and then turns to extend in the radial direction of the housing 10 and is electrically connected to the top cover 13. Of course, all the first tabs 22 may extend in the radial direction of the housing 10, and in this case, the first tabs 22 are led out from the top of the positive electrode sheet, directly extend in the radial direction of the housing 10, and then electrically connected to the top cover 13. The second tab 23 is electrically connected to the housing 12, for example, the second tab 23 is electrically connected to the inner bottom surface of the housing 12, and at least a portion of the second tab 23 extends radially of the housing 10, as shown by way of example in fig. 1 and 2, and in the present figures, a complete extension of the second tab 23 radially of the housing 10 is illustrated. The manner in which part of the second tab 23 extends radially along the housing 10 is the same as the manner in which the first tab 22 is disposed, and will not be described in detail herein.

In the present application, the first tab 22 may be a positive tab or a negative tab, and the second tab 23 may be a negative tab or a positive tab, that is, when the first tab 22 is a positive tab, the second tab 23 is a negative tab, and when the first tab 22 is a negative tab, the second tab 23 is a positive tab. In the drawings, the first tab 22 is taken as a positive tab, and the second tab 23 is taken as a negative tab for illustration.

Of course, the present application is not limited thereto, and as shown in fig. 1 and 2, in the battery 100 provided in the embodiment of the present application, the outer sidewall of the case 12 is further provided with a marking part 121, and the central axis of the marking part 121 in the axial direction of the case 10 and the central axis of the top cover 13 in the extending direction of at least part of the first tab 22 are located on the same plane, the two lines define a plane, and the central axis of at least part of the second tab 23 in the radial direction of the case 10 and the central axis of at least part of the first tab 22 in the radial direction of the case 10 form a preset angle with the plane formed by the central axis of the marking part 121 in the axial direction of the case 10, and the preset angle may be any value of 0 ° -90 °, for example 0 °,30 °, 45 °,60 °,90 °. In the embodiment of the present application, the case where the center line of at least part of the second tab 23 in the direction extending in the radial direction of the housing 10 and the center line of at least part of the first tab 22 in the direction extending in the radial direction of the housing 10 are 90 ° from the plane formed by the center line of the mark portion 121 in the axial direction of the housing 10 is taken as an example.

It should be noted that, in the same batch of products, after the battery cell 20 and the housing 10 are assembled, the second tab 23 of the battery cell 20 is fixed at the position of the inner bottom surface of the housing 12. For example, if the preset angle is 90 °, in the same batch of products, the center line of at least part of the second tab 23 in the direction extending in the radial direction of the housing 10 and the center line of at least part of the first tab 22 in the direction extending in the radial direction of the housing 10 are both 90 ° with respect to the plane formed by the central axis of the marking portion 121 in the axial direction of the housing 10.

It should be understood that since at least part of the center line of the second tab 23 in the radial extending direction of the housing 10 and at least part of the center line of the first tab 22 in the radial extending direction of the housing have a predetermined angle with respect to the plane formed by the center line of the marking portion 121 in the axial direction of the housing 10, the position of the second tab 23 can be determined by the center line of the marking portion 121 in the axial direction of the housing 10 according to the predetermined angle. Specifically, a plane is formed by the marking portion 121 along the axial center line of the housing 10 on the side of the housing 10 facing the marking portion 121, and the radial position of the preset angle between the marking portion 121 and the bottom of the housing 12 is the projection position of the second lug 23 on the bottom of the housing 12. In short, in the embodiment of the present invention, the first tab 22 and the second tab 23 are perpendicular to each other, and the position of the second tab 23 can be determined by the position of the marking portion 121 along the central axis of the housing 10 in the axial direction. And the confirmation process is simple and accurate, the precision is high, and the safety risk can be reduced compared with a mode of X-ray determination.

It will be appreciated that, in the embodiment of the present invention, the marking portion 121 is illustrated by taking a straight line as an example, the straight line type marking portion 121 can more precisely find the central axis position of the marking portion 121 in the axial direction of the housing 10, so as to improve the position accuracy of determining the second tab 23, and the marking portion 121 can also be a spiral line, an arc line, a graph, or the like, if the error range allows, so long as the marking can be displayed on the outer side wall of the housing 10.

It should be noted that, in the embodiments of the present application, the definitions of the relative positional relationships such as the vertical terms mentioned above are all specific to the current technology, rather than absolute strict definitions in mathematical terms, and small deviations, similar to the vertical terms, are allowed. For example, A is perpendicular to B, meaning that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B is 80-100 degrees.

It should also be noted that, in the drawings of the embodiments of the present application, the actual proportions of the respective parts are not drawn, and therefore the present application should not be limited to the proportions shown in the drawings, for example, in fig. 1 and 2, the sizes of the first tab 22 and the second tab 23 may be correspondingly enlarged or correspondingly reduced.

In some embodiments of the present invention, the marking portion 121 may be a protrusion or a recess formed by a laser scribing method, and the laser scribing method not only ensures that the marking portion 121 is uniform in size, flat and burr-free, and not sticky, but also is beneficial to improving the production efficiency of the product.

Fig. 3 is a schematic view of an external appearance structure of a battery 100 according to an embodiment of the present invention, and referring to fig. 3, in some embodiments of the present invention, the battery further includes a first insulating member 30, where the first insulating member 30 is disposed on an outer bottom surface of the housing 12, and the first insulating member 30 covers at least a portion of a front projection of the second tab 23 on the bottom surface of the housing 12, and in the embodiment of the present invention, an illustration is given by taking a front projection of the first insulating member 30 covering a portion of the second tab 23 on the bottom surface of the housing 12 as an example, where it is required to ensure that a bonding wire between the second tab 23 and the bottom surface of the housing 12 is located within the coverage area of the first insulating member 30 or a boundary of the coverage area of the first insulating member 30, and that a portion of a magnetic field generated by the second tab 23 is located within the coverage area of the first insulating member 30, i.e., a portion of the second tab 23 connecting the battery body 21 and the second tab 23 on the bottom surface of the housing 12 is located within the coverage area of the first insulating member 30. Of course, the first insulating member 30 may cover the front projection of all the second tabs 23 on the bottom surface of the housing 12, so as to achieve a magnetic effect of the battery 100 and prevent the battery 100 from being magnetized. The first insulating member 30 may be a gel, such as gummed paper.

With continued reference to fig. 3, in some embodiments of the invention, the first insulator 30 may be scalloped, with the scalloped angle of the first insulator 30 being between 180 ° and 270 °, to the effect of a front projection of the full coverage second pole 23 onto the bottom surface of the housing 12.

It should be noted that, an identification mark 40 (as shown in fig. 3), such as a two-dimensional code, may be further provided on the outer bottom surface of the case 12 in a region other than the first insulating member 30.

In order to connect the battery 100 with the circuit structure inside the electronic device, in some embodiments of the present application, for example, as shown in fig. 3, a second adapter 50 is further included, and the second adapter 50 is electrically connected with the case 12, and in the present application, the second adapter 50 serves as a negative electrode adapter of the battery 100. Specifically, the second adaptor 50 is welded to the outer bottom surface of the housing 12 in a region other than the first insulating member 30, and the bottom of the housing 12 is generally thicker, so that the function of the second lug 23 is not affected by welding the second adaptor 50.

Fig. 4 is another view schematically illustrating an external structure of the battery 100 according to an embodiment of the present invention, and referring to fig. 4, in some embodiments of the present invention, a first adaptor 60 may be further included, where the first adaptor 60 is electrically connected to the top cover 13, and the first adaptor 60 is used as a positive adaptor of the battery 100.

The first adapter 60 has a first pin 61, and the first pin 61 is generally disposed on an outer side surface of the housing 12 for facilitating connection with the electronic device, and in this case, the battery 100 further includes a second insulator 70 disposed between the first pin 61 and the outer side wall of the housing 12 for insulating the first pin 61 from the outer side surface of the housing 12. The second insulator 70 may be made of a gel, such as gummed paper.

Similarly, the second pin 51 of the second adapter 50 may also be disposed on the outer side of the housing 12, and the second insulator 70 is also disposed between the second pin 51 and the outer side wall of the housing 12.

Fig. 5 is a schematic structural diagram of a battery 100 according to an embodiment of the present invention, and referring to fig. 5, in some embodiments of the present invention, a case 12 may include a bottom case 122 and a cover 123.

Specifically, the bottom shell 122 and the cover plate 123 enclose a receiving cavity 11. The electric core 20 and the electrolyte are arranged in the accommodating cavity 11, and the electric core 20 generates chemical reaction in the electrolyte to generate electric energy.

Wherein, the cover 123 is welded with the bottom case 122 as a case cover negative electrode. The top cover 13 is disposed on the cover 123 and is connected to the cover 123 in an insulating manner, for example, a film may be disposed between the top cover 13 and the cover 123 to realize the insulating connection between the top cover 13 and the cover 123, that is, to enable mutual insulation between the top cover 13 and the housing 12. The inner top surface of the top cover 13 is electrically connected with the first tab 22 to serve as a positive electrode of the case cover.

It should be noted that, the top cover 13 may further be provided with a liquid injection hole 131 (refer to fig. 7), the liquid injection hole 131 is in communication with the accommodating cavity 11, and the electrolyte may be injected into the accommodating cavity 11 through the liquid injection hole 131. After the injection of the electrolyte is completed, a sealing cap 80 (as shown in fig. 5) may be provided on the injection hole 131 to close the injection hole 131, thereby preventing the electrolyte from leaking out of the container chamber 11 and improving the stability and reliability of the structure of the battery 100.

Of course, the structure of the case 10 of the battery 100 is not limited to the above example, and for example, the case 10 may be formed by butt-jointing an upper case having one end opened and a lower case having one end opened, the upper case and the lower case being enclosed to form the accommodation chamber 11, and an insulating layer insulating the upper case and the lower case being interposed between the joint surfaces of the upper case and the lower case so that the upper case and the lower case may serve as the positive electrode and the negative electrode of the battery 100, respectively. Here, the structure of the battery 100 case 10 is not limited.

The following describes a method for manufacturing the battery 100, and the steps of the method for manufacturing the battery 100 described above may refer to fig. 6, and fig. 7 is a schematic diagram of operations corresponding to the steps in fig. 6, and is shown in conjunction with fig. 6 and fig. 7:

And S101, assembling the battery cell 20 in the shell 12, wherein the second lug 23 of the battery cell 20 is electrically connected with the inner bottom surface of the shell 12, and at least part of the second lug 23 extends along the radial direction of the shell 12.

S102, horizontally arranging the top cover 13, and vertically arranging the shell 12 in the radial direction.

And S103, fixing the first tab 22 of the battery cell 20 with the top cover 13 by using a clamp.

S104, the first tab 22 is connected with the top cover 13 by using the laser beam 90 emitted by the laser emitter to trace the set track.

S105, the moving laser beam 90 opens a marking portion 121 on the outer wall of the case 12.

S106, battery 100 is assembled.

Specifically, in S101, the battery cell 20 is assembled in the housing 12, the second tab 23 of the battery cell 20 is electrically connected to the inner bottom surface of the housing 12, and at least part of the second tab 23 extends in the radial direction of the housing 12.

In S102, the top cover 13 is aligned with the housing 12, as shown in fig. 7, the top cover 13 is horizontally arranged, the housing 12 is vertically arranged in the radial direction, or the housing 12 is horizontally arranged, the top cover 13 is vertically arranged, and the top cover 13 and the housing 12 are guaranteed to be in a 90 ° uncapped state.

In S103, a Charge-Coupled Device (CCD) is used to identify the positions of the first tab 22 and the injection hole 131, a clamp is used to compress the first tab 22 of the battery cell 20 and the top cover 13, the position of the first tab 22 is fixed, the first tab 22 will not shift or deviate, and under the pressure of inert gas, the laser beam 90 emitted by the laser emitter is used to move along a set track in the welding effective area of the first tab 22 and the top cover 13, so as to connect the first tab 22 and the top cover 13 together. Wherein the laser transmitter may be a laser galvanometer.

In S104, the moving laser beam 90 opens a marking portion 121 on the outer side wall of the case 12, and as shown in fig. 7, the moving laser beam 90 opens a marking line as the marking portion 121 on the outer side wall of the case 12 opposite to the flat first tab 22, and the marking portion 121 is parallel to the center line in the extending direction of the first tab 22.

In S105, battery 100 is assembled, and battery 100 including first insulator 30, second insulator 70, second adapter 50, first adapter 60, and the like is assembled by integrally welding battery 100 case 10.

It should be noted that, the welding track of the first tab 22 may be set on the computer operation interface, and the welding track of the first tab 22 may be a track of a point, a circle, a polygon, a spiral line, an arc line, or the like. The marking portion 121 may be a straight line, a spiral line, an arc line, or the like as long as a mark can be displayed on the outer side wall of the housing 12.

The same laser emitter can be used at the same station by welding the first tab 22 and etching the marking part 121, so that the action flow can be reduced and the efficiency can be improved. For example, it is possible to set that the etching of the mark 121 is delayed by 20 to 100ms after the welding of the first tab 22 is completed, and the two operations do not interfere with each other. In addition, the laser galvanometer can automatically adjust the focal length, so that the welding effect is ensured, and overselding or cold joint cannot occur.

The welding power of the first tab 22 can be 20% -30%, the welding speed is 150ms-250ms, the welding protrusion is 0.02-0.1mm, no splashing exists in the welding process, the welding penetration is 0.08-0.2mm, and the 180-degree welding tensile test is more than or equal to 5N.

The laser beam 90 does not splash in the process of etching the marking part 121, only marks the outer side wall of the shell 12, has no welding bulge, and has the welding power of 5% -10% and the welding speed of 150ms-250ms.

The embodiment of the invention also provides an electronic device, which comprises an electronic device main body and the battery 100, wherein the battery 100 is arranged on the electronic device main body and is electrically connected with the electronic device.

The technical features and technical effects of the battery 100 are the same as those described above, and are not described in detail herein.

In summary, the battery and the electronic device provided by the invention can determine the position of the second lug in the battery, further carry out rubberizing packaging on the battery to achieve the screen magnetic effect, and then weld the adapter at the bottom, so that the electrical performance and the safe use performance of the battery can be improved. The main beneficial effects of the method can be summarized into four points, namely 1, the position of the second electrode lug of the battery can be determined through the marking part 121 by laser etching the marking part 121. 2. After the second lug position has been determined, the packaging of the bottom wall insulation and the welding of the bottom wall adapter can be carried out. 3. The magnetic effect of the battery screen can be realized, and the battery is prevented from being magnetized. 4. The electric performance and the safe use performance of the battery can be improved.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on 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 in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly as being either permanently connected or removably connected or integrally formed, or as being directly connected or indirectly connected through an intervening medium such that two elements may be interconnected or in an interactive relationship. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.

Claims

1. A battery is characterized by comprising a shell and an electric core;

the shell is provided with an accommodating cavity, and the battery cell is positioned in the accommodating cavity;

the outer side wall of the shell is provided with a marking part, and a preset angle is formed between the central line of at least part of the second lugs in the direction along the radial extension of the shell and the central line of at least part of the first lugs in the direction along the radial extension of the shell and a plane formed by the marking part along the central line of the shell in the axial direction.

2. The battery according to claim 1, wherein the marking portion is convex or concave.

3. The battery of claim 1, further comprising a first insulator;

4. A battery according to claim 3, wherein the first insulating member is scalloped and the scalloped angle of the first insulating member is 180 ° -270 °.

5. The battery of any one of claims 1-4, wherein the predetermined angle is between 0 ° -90 °.

6. The battery of any one of claims 1-4, further comprising a first adapter;

The first adapter is electrically connected with the top cover.

7. The battery of claim 6, wherein the first pin of the first adapter is located on an outside surface of the housing;

8. The battery of claim 7, further comprising a second adapter;

the second adapter is electrically connected with the housing.

9. The battery of claim 8, wherein the second pin of the second adapter is located on an outer side of the housing and the second insulator is disposed between the second pin and an outer side wall of the housing.

10. The battery according to any one of claim 1 to 4, wherein,

The shell comprises a bottom shell and a cover plate, and the bottom shell and the cover plate are enclosed to form the accommodating cavity;

11. An electronic device comprising an electronic device body and the battery of any one of claims 1-10;