CN112952218B

CN112952218B - Battery, manufacturing method of battery, electronic device and testing method of battery

Info

Publication number: CN112952218B
Application number: CN201911173428.5A
Authority: CN
Inventors: 姚明高
Original assignee: Dongguan Nvt Technology Co Ltd
Current assignee: Dongguan Nvt Technology Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2022-12-13
Anticipated expiration: 2039-11-26
Also published as: CN112952218A

Abstract

A battery comprises a battery cell, a plastic package part and a conductive part. And the battery cell is provided with a lug. The conductive part is arranged on the tab. The plastic package part covers part or all of the tabs, and the conductive part is exposed to the plastic package part. The application also provides a manufacturing method of the battery, an electronic device with the battery and a testing method of the battery.

Description

Battery, method for manufacturing battery, electronic device, and method for testing battery

Technical Field

The present disclosure relates to the field of batteries, and more particularly, to a battery, a method for manufacturing the battery, an electronic device, and a method for testing the battery.

Background

Due to the special requirements for battery capacity, wearable products developed in recent years pose great challenges for cell volume, cell shape design and cell manufacture. In order to ensure the electrical connection of the battery cell, the positive and negative electrode tabs are usually led out from the winding layer of the battery cell body and extend out of the battery cell aluminum plastic film packaging body by a certain length; then, after shaping and cutting the positive and negative lugs, welding the positive and negative lugs with a protective plate to realize electric connection; and finally, bending the positive and negative lugs on the pit surface of the battery core. However, the above approach has several problems: 1. the size of the protection board is limited by the overall dimension of the product, and the requirement on the size of the protection board is as small as possible, which brings challenges to the design of electronic circuits and the manufacture of the protection board; 2. a certain space is needed for accommodating the PCM plate, and the space occupies partial space of the battery core, so that the energy density of the battery is reduced; 3. the battery core volume is smaller and smaller, and the assembly and the manufacture are also more and more difficult.

Disclosure of Invention

In view of the above, it is desirable to provide a battery having a high energy density.

The application also provides a manufacturing method of the battery, an electronic device with the battery and a testing method of the battery.

The utility model provides a battery, includes electric core, be provided with utmost point ear on the electric core, utmost point ear includes first subsection and second subsection, first subsection set up in electric core, the second subsection by first subsection is kept away from the one end of electric core is extended, and with first subsection sets up relatively, battery still includes:

the plastic packaging part wraps the lug, and the joint of the first subsection and the second subsection is exposed on the surface of the plastic packaging part; and

and a conductive portion provided at a junction of the first and second sections.

Optionally, the plastic package part includes a through hole and a groove, the through hole penetrates through the plastic package part, the first sub-part is accommodated in the through hole, the second sub-part is accommodated in the groove, and a joint of the first sub-part and the second sub-part is located between the through hole and the groove and exposed on a surface of the plastic package part.

Optionally, the battery cell includes a top surface, a bottom surface facing away from the top surface, and a peripheral surface connected between the top surface and the bottom surface, and a top sealing edge is provided on the top surface, wherein the first part of the tab extends from the top sealing edge, and the plastic package portion further covers the top sealing edge and part or all of the top surface.

Optionally, the cross section of the battery cell is rectangular, circular or irregular.

Optionally, the plastic package part is formed by an injection molding process or a potting process.

A method of manufacturing the battery, comprising the steps of:

providing a battery cell, wherein a lug is arranged on the battery cell;

providing a conductive part and welding the conductive part on the tab;

bending the tab to form a first subsection and a second subsection which are oppositely arranged, wherein the conductive part is located at the connection position of the first subsection and the second subsection; and

the battery cell is provided with the surface of the lug is subjected to injection molding treatment or encapsulation treatment to form a plastic package part, wherein the plastic package part covers the lug, and the joint of the first part and the second part is exposed on the surface of the plastic package part.

The utility model provides a battery, includes electric core, be provided with utmost point ear on the electric core, the battery still includes:

the plastic packaging part wraps part or all of the tabs, and comprises an upper top surface, and a first groove is formed in the upper top surface; and

the conductive part is arranged on the tab and accommodated in the first groove.

Optionally, the plastic package part covers part of the tab, the tab includes a first part and a second part, the first part is disposed on the battery cell and located in the plastic package part, the second part extends from one end of the first part, which is far away from the battery cell, and is accommodated in the first groove, and the conductive part is disposed on the second part.

Optionally, the plastic package portion further includes a side surface connected between the upper top surface and the battery core, a second groove is formed in the side surface, the second groove is communicated with the first groove, and the second portion and/or the conductive portion are further accommodated in the second groove.

Optionally, a third groove is further formed in the plastic package portion, the third groove is communicated with the first groove, and the second sub portion and/or the conductive portion are accommodated in the third groove.

Optionally, the cross section of the conductive part is square, L-shaped or U-shaped, and the tab is L-shaped, U-shaped or sheet.

Optionally, the plastic package part completely covers the tab, the plastic package part further includes a side surface connected between the upper top surface and the battery cell, a second groove is formed in the side surface, the second groove is communicated with the first groove, and a part of the conductive part is connected with the tab and is located in the plastic package part; the other part of the conductive part is accommodated in the first groove and the second groove.

A method of manufacturing the battery, comprising the steps of:

providing a battery cell, wherein a tab is arranged on the battery cell and comprises a first subsection and a second subsection;

performing injection molding or potting treatment on the surface, provided with the lug, of the battery cell to form a plastic package part, wherein the plastic package part covers the first part, the plastic package part comprises an upper top surface, and a first groove is formed in the upper top surface; and

providing a conductive part and welding the conductive part on the second part;

and bending the second branch part and accommodating the second branch part in the first groove, wherein the conductive part is accommodated in the first groove.

An electronic device comprises an electric connector and the battery, wherein the electric connector is connected with the conductive part of the battery.

Optionally, the electrical connector is a copper pin, a copper sheet or a pogo pin.

A method of testing the battery, comprising the steps of:

providing a battery testing device, wherein the battery testing device comprises a testing box and an electric connector connected with the testing box; and

and sliding the electric connecting piece from the first groove and connecting the electric connecting piece with the conductive part to realize the electric connection with the battery.

In summary, compared with the conventional battery integrated with a protection plate, the battery integrates the protection plate into the control system outside the battery, and the battery design without the protection plate is realized. In addition, the battery without the protection plate reduces the space occupied by the protection plate, thereby effectively increasing the size of the battery core, further increasing the capacity of the battery and improving the energy density of the battery; meanwhile, the manufacturing process of the battery can be simplified, and the manufacturing cost is reduced. In addition, the plastic package part covers part or all of the tabs to form a head part of the battery with supporting capacity, so that the anti-falling performance of the battery is improved, and the battery is protected.

Drawings

Fig. 1 is a schematic structural diagram of a battery according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a battery according to another embodiment of the present application.

Fig. 3 is a partial structural view of the battery shown in fig. 1.

Fig. 4 is a partial structural view of the battery shown in fig. 2.

Fig. 5 is a schematic partial cross-sectional view of the battery shown in fig. 1.

Fig. 6 is a schematic structural view of a battery according to still another embodiment of the present application.

Fig. 7 is a schematic structural diagram of a battery according to still another embodiment of the present application.

Fig. 8 is a schematic partial cross-sectional view of the battery shown in fig. 6.

Fig. 9 shows a method for manufacturing a battery according to an embodiment of the present application.

Fig. 10 is a schematic structural view of a battery according to an embodiment of the present application.

Fig. 11 is a partial structural view of the battery shown in fig. 10.

Fig. 12 is a schematic structural view of a battery according to another embodiment of the present application.

Fig. 13 is a schematic partial cross-sectional view of the battery of fig. 12.

Fig. 14 is a schematic structural view of a battery according to still another embodiment of the present application.

Fig. 15 is a schematic partial cross-sectional view of the cell shown in fig. 14.

Fig. 16 is a schematic structural view of a mold part in the battery shown in fig. 14.

Fig. 17 is a schematic structural view of a battery according to still another embodiment of the present application.

Fig. 18 is a schematic view of a portion of the structure of the battery shown in fig. 17.

Fig. 19 is a schematic view showing the structure of the battery shown in fig. 12 when the tab is unfolded.

Fig. 20 shows a method for manufacturing a battery according to another embodiment of the present application.

Fig. 21 shows a method for manufacturing a battery according to still another embodiment of the present application.

Fig. 22 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 23 is a partial structural schematic diagram of the electronic device shown in fig. 22.

Fig. 24 is a block diagram of a battery test apparatus according to an embodiment of the present disclosure.

Fig. 25 is a schematic structural view of an electrical connector connected to a battery according to an embodiment of the present application.

Description of the main elements

Batteries

10, 20

Battery cells

11, 21

Tabs

111, 211

First subsection

1111, 2111

Second subsection

1112, 2112

Top surface

112, 212

Bottom surfaces 113, 213

Peripheral surfaces

114, 214

Top seal

115, 215

Plastic package parts

12, 22

Upper

top surfaces

121, 221

Side surfaces 122, 223

Via 123

Groove 124

Conductive parts

13, 23

First groove 222

Bottom wall 2221

Side wall 2222

Second groove 224

Third groove 225

First conductive subsection 231

A second conductive subsection 232

Third conductive subsection 233

Electronic device 30

Electrical connector 31

Battery testing device 40

Test box 41

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, the present embodiment provides a battery 10. The battery 10 includes a battery cell 11, a plastic package portion 12, and a conductive portion 13. The cross section of the battery cell 11 may be rectangular, circular or irregular. The profile is not limited to C-shaped, arc, etc.

Referring to fig. 3 and fig. 4, the battery cell 11 is provided with a tab 111. In the present embodiment, the tab 111 has a U-shaped structure and includes a first sub-portion 1111 and a second sub-portion 1112. The first sub-portion 1111 is disposed on the battery cell 11. The second sub-portion 1112 extends from an end of the first sub-portion 1111, which is away from the battery cell 11, and is disposed opposite to the first sub-portion 1111. The plastic package portion 12 is wrapped on the tab 111, and the joint of the first sub-portion 1111 and the second sub-portion 1112 is exposed to the plastic package portion 12. The conductive part 13 is disposed at a connection point of the first sub-part 1111 and the second sub-part 1112.

Specifically, the battery cell 11 includes a top surface 112, a bottom surface 113 opposite to the top surface 112, and a peripheral surface 114 connected between the top surface 112 and the bottom surface 113. The tab 111 is located on the top surface 112. Wherein, a top sealing edge 115 is arranged on the top surface 112. The first section 1111 of the tab 111 extends from the top seal 115. The plastic package part 12 also covers the top sealing edge 115 and part or all of the top surface 112. In this embodiment, a distance between a surface of the plastic-molded portion 12 facing away from the battery cell 11 and the top surface 112 is smaller than a distance between a surface of the conductive portion 13 facing away from the battery cell 11 and the top surface 112 (see fig. 3 to 5). In this way, the conductive portion 13 is exposed from the molding portion 22 to provide an electrical connection terminal for the battery 10, so that the battery 10 can be electrically connected to an external device.

The plastic package part 12 includes an upper top surface 121 and a side surface 122 connected between the upper top surface 121 and the battery cell 11. Referring to fig. 5, in the present embodiment, the mold part 12 is provided with a through hole 123 and a concave groove 124. The through hole 123 is formed by the upper top surface 121 penetrating through the plastic package part 12 in the direction of the battery cell 11, and the groove 124 is formed by the upper top surface 121 sinking in the direction of the battery cell 11. The tab 111 passes through the through hole 123, and the first sub-portion 1111 is received in the through hole 123. The second sub-portion 1112 is bent with respect to the groove 124. The connection position of the first sub-portion 1111 and the second sub-portion 1112 is located between the through hole 123 and the groove 124, and is exposed on the upper top surface 121 of the plastic package portion 12.

Referring to fig. 6, 7 and 8, in other embodiments, the conductive portion 13 in the battery 10 may be omitted. At this time, a connection point between the first sub-portion 1111 and the second sub-portion 1112 is exposed to the mold sealing portion 12. The distance from the surface of the battery cell 11, which is back to the top surface 112, of the connection point of the first sub-portion 1111 and the second sub-portion 1112 is greater than the distance from the surface of the plastic package portion 12, which is back to the battery cell 11, to the top surface 112. In this way, the connection portion of the first sub-portion 1111 and the second sub-portion 1112 is exposed out of the plastic package portion 22 to provide an electrical connection terminal for the battery 10, so that the battery 10 can be electrically connected to an external device.

Referring to fig. 9, the present application also provides a method of manufacturing the battery 10, including the steps of:

step S101, providing the battery cell 11.

Step S102, providing the conductive portion 13, and welding the conductive portion 13 to the tab 111 on the battery cell 11.

Step S103, bending the tab 111 to form a first sub-portion 1111 and a second sub-portion 1112 arranged opposite to each other. Wherein the conductive portion 13 is located at a connection of the first sub-portion 1111 and the second sub-portion 1112.

Step S104, performing injection molding or potting on the top surface 112 of the battery cell 11 to form the plastic package part 12. Wherein, the cladding of plastic envelope portion 12 utmost point ear 111, just first subdivision 1111 with the junction of second subdivision 1112 exposes plastic envelope portion 12.

Further, the plastic package part 12 also covers the top sealing edge 115 and part or all of the top surface 112.

Referring to fig. 10, the present embodiment also provides a battery 20. The battery 20 includes a battery cell 21, a plastic package portion 22, and a conductive portion 23. The cross section of the battery cell 21 may be rectangular, square or irregular. The profile is not limited to a C-shape, an arc shape, etc. The cross section of the conductive part 23 may be square, L-shaped or U-shaped.

Referring to fig. 11, the battery cell 21 is provided with a tab 211. The plastic package part 22 covers part or all of the tabs 211. The plastic package part 22 includes an upper top surface 221. The upper top surface 221 is provided with a first groove 222. The conductive part 23 is disposed on the tab 111 and received in the first groove 222.

Specifically, the battery cell 21 includes a top surface 212, a bottom surface 213 opposite to the top surface 212, and a peripheral surface 214 connected between the top surface 212 and the bottom surface 213. The tab 211 is located on the top surface 212. Wherein, a top sealing edge 215 is arranged on the top surface 212. The tab 211 extends from the top seal 215. The plastic sealing part 22 also covers the top sealing edge 215 and part or all of the top surface 212.

Referring to fig. 10 and 11, in an embodiment, the plastic sealing part 22 covers a portion of the tab 211. Specifically, the tab 211 includes a first part 2111 and a second part 2112. The first sub-portion 2111 is disposed on the battery cell 21, and the second sub-portion 2112 extends from an end of the first sub-portion 33 away from the battery cell 21. The tab 211 is of an L-shaped structure. The first sub-portion 2111 is located in the plastic package portion 22, and the second sub-portion 2112 is accommodated in the first groove 222. The conductive portion 23 is disposed on the second sub-portion 2112 and is received in the first groove 222.

Further, referring to fig. 12, the plastic package part 22 further includes a side surface 223 connected between the upper top surface 221 and the battery cell 21. The side surface 223 is provided with a second groove 224. The second groove 224 communicates with the first groove 222. The second section 2112 and/or the conductive portion 23 may also be received in the second recess 224.

In another embodiment, referring to fig. 14 and 15, a third groove 225 is further formed on the plastic sealing part 22. The third groove 225 communicates with the first groove 222. The second section 2112 and/or the conductive portion 23 are also received in the third recess 225.

Specifically, referring to fig. 16, the first groove 222 includes a bottom wall 2221 and a side wall 2222 disposed at an edge of the bottom wall 2221. The third groove 225 is formed by recessing the bottom wall 2221 toward the battery cell 21.

Referring to fig. 17 and 18, in another embodiment, the plastic sealing part 22 completely covers the tab 211. Wherein, a part of the conductive part 23 is connected with the tab 211 and is located in the plastic package part 22; the other part of the conductive part 23 is accommodated in the first and

second grooves

222 and 224. Specifically, the cross section of the conductive portion 23 is U-shaped, and includes a first conductive portion 231, and a second conductive portion 232 and a third conductive portion 233 connected to both sides of the first conductive portion 231, respectively. The second conductive branch 232 is connected to the tab 211 and is located in the plastic package portion 22. The first conductive subsection 231 is received in the first recess 222 and the second conductive subsection 232 is received in the third recess 225.

The battery 20 will be specifically described below by way of examples.

Example 1

Referring to fig. 10 and 11, the battery 20 includes a battery cell 21, a mold cover 22, and a conductive portion 23. In embodiment 1, the battery cell 21 has a rectangular parallelepiped structure.

The battery cell 21 is provided with a tab 211. The tab 211 includes a first portion 2111 and a second portion 2112. In embodiment 1, the tab 211 has an L-shaped structure. The first sub-portion 2111 is disposed on the battery cell 21, and the second sub-portion 2112 extends from one end of the first sub-portion 2111, which is far away from the battery cell 21. Specifically, the battery cell 21 includes a top surface 212, a bottom surface 213 opposite to the top surface 212, and a peripheral surface 214 connected between the top surface 212 and the bottom surface 213. The tab 211 is located on the top surface 212. Wherein, a top sealing edge 215 is arranged on the top surface 212. The tab 211 extends from the top seal 215.

The plastic sealing portion 22 covers the top sealing edge 215, the top surface 212 and the first portion 2111. A first groove 222 is formed on the upper top surface 221 of the plastic package portion 22. The second section 2112 of the tab 211 is received in the first groove 222. The conductive portion 23 is a sheet-shaped structure, is disposed on the second sub-portion 2112, and is accommodated in the first groove 222.

In embodiment 1, the first groove 222 may be formed together with the mold part 22 during the injection molding process or the potting process; alternatively, the plastic sealing portion 22 is formed and then opened on the upper top surface 221.

Example 2

Referring to fig. 12 and 13, embodiment 2 differs from embodiment 1 in the structure of the mold sections 22 and the tabs 211.

In embodiment 2, the plastic sealing part 22 further includes a side surface 223 connected between the upper top surface 221 and the battery cell 21. The side 223 is provided with a second groove 224. The second groove 224 communicates with the first groove 222.

In embodiment 2, the second part 2112 shown in fig. 19 is bent into an L shape, so that the second part 2112 is accommodated in the first groove 222 and the second groove 224 (see fig. 9). The tab 211 in embodiment 2 has a U-shaped structure. In other embodiments, the cross section of the conductive portion 23 may be L-shaped to match the second sub-portion 2112. Thus, the conductive portion 23 is disposed on the second sub-portion 2112 and received in the first groove 222 and the second groove 224.

In embodiment 2, the second groove 224 may be formed together with the plastic package part 22 during the injection molding process or the potting process; alternatively, the side surfaces 223 may be opened after the plastic sealing portion 22 is formed.

Example 3

Referring to fig. 14, 15, and 16, embodiment 3 differs from embodiment 1 in the structure of the mold sections 22 and the tabs 211.

In embodiment 3, the tab 211 has a U-shaped structure. Specifically, the first groove 222 includes a bottom wall 2221 and a side wall 2222 disposed at an edge of the bottom wall 2221. The bottom wall 2221 is recessed toward the battery cell 21 to form a third groove 225. The third groove 225 communicates with the first groove 222. The second section 2112 is received in the first recess 222 and the third recess 225.

In embodiment 3, the third groove 225 may be formed together with the plastic sealing part 22 during injection molding or potting; alternatively, the bottom wall 2221 may be opened after the plastic package portion 22 is formed.

Example 4

Referring to fig. 17 and 18, embodiment 4 is different from embodiment 1 in the structure of the mold sealing part 22, the tab 211, and the conductive part 23.

Specifically, the plastic package part 22 further includes a side surface 223 connected between the upper top surface 221 and the battery cell 21. The side 223 is provided with a second groove 224. The second groove 224 communicates with the first groove 222.

In embodiment 4, the tab 211 has a plate-like structure. The plastic package part 22 completely covers the tab 211. The conductive portion 23 has a U-shaped cross section and includes a first conductive portion 231, and a second conductive portion 232 and a third conductive portion 233 connected to two sides of the first conductive portion 231, respectively. The second conductive branch 232 is connected to the tab 211 and is located in the plastic package portion 22. The first conductive branch 231 is received in the first recess 222 and the second conductive branch 232 is received in the second recess 224.

Referring to fig. 20, the present application also provides a method of manufacturing a battery 20, which includes the steps of:

step S201, providing the battery cell 21 described above.

Step S202, performing injection molding or potting on the top surface 212 of the battery cell 21 to form the plastic package part 22. The plastic package part 22 covers part of the tab 211. The first groove 222 may be formed together when the plastic sealing part 22 is formed through a line injection molding process or a potting process.

Step S203, providing the conductive part 23, and welding the conductive part 23 to the tab 211 located outside the plastic package part 22.

Step S204, bending the tab 211 located outside the plastic package portion 22, and accommodating the tab in the first groove 222. Wherein the conductive portion 23 is received in the first recess 222.

Referring to fig. 21, in another embodiment, when the plastic sealing part 22 completely covers the tab 211, the method for manufacturing the battery 20 includes the steps of:

step S301, providing the battery cell 21 described above.

Step S302, providing a conductive part 23, and welding the conductive part 23 to a tab 211 on the battery cell 21 (see fig. 18).

Step S303, performing injection molding or potting on the top surface 212 of the battery cell 21 to form the plastic package portion 22. The mold part 22 covers part of the conductive part 23 and all of the tabs 211 (see fig. 17). The plastic package part 22 includes an upper top surface 221 and a side surface 223 connected between the upper top surface 221 and the battery cell 21. The plastic package part 22 forms a first groove 222 on the upper top surface 221 and a second groove 224 on the side surface 223 during injection molding or potting. The first groove 222 communicates with the second groove 224.

Step S304, bending the conductive portion 23 located outside the plastic package portion 22, and accommodating the conductive portion in the first groove 222 and the second groove 224.

Referring to fig. 22, the battery 10/20 may be applied to an electronic device 30. In this embodiment, the electronic device 30 is a mobile phone. In other embodiments, the battery 20 is not limited to a flat circuit, a wearable device, or the like.

Referring to fig. 23, the electronic device 30 further includes an electrical connector 31. The electrical connector 31 is connected to the conductive portion 23 for electrically connecting the battery 20 with other electronic components in the electronic device 30. Wherein, the electrical connector 31 may be a copper pin, a copper sheet or a pogo pin.

The present application further provides a method for testing the battery 20, which includes the following steps:

in step one, a battery test apparatus 40 (see fig. 24) is provided. The battery testing device 40 includes a testing box 41 and an electrical connector 31 connected to the testing box 41.

And step two, connecting the electric connector 31 to the conductive part 23 of the battery 20 so as to electrically connect the test box 41 and the battery 20. In this manner, the battery 20 can be tested by the test box 41. In the present embodiment, the electrical connector 31 slides into and connects with the conductive part 23 from the first groove 222 to achieve electrical connection with the battery 20.

Referring to fig. 25, in one embodiment, the electrical connection member 31 may be disposed at the third conductive branch 233 of the conductive portion 23. In this way, the electrical connector 31 can electrically connect the battery 20 and the test box 41, and can prevent the third conductive subsection 233 bent with respect to the first conductive subsection 231 from tilting.

In summary, compared to the conventional battery integrated with the protection plate, the battery 10/20 of the present disclosure integrates the protection plate into the control system outside the battery 10/20, thereby realizing the battery design without the protection plate. In addition, the battery without the protection plate is designed to reduce the space occupied by the protection plate, thereby effectively increasing the size of the battery cell 11/21, further increasing the capacity of the battery 10/20 and improving the energy density of the battery 10/20; meanwhile, the manufacturing process of the battery 10/20 can be simplified, and the manufacturing cost can be reduced. In addition, the plastic package part 22 covers part or all of the tabs 211 to form the head of the battery 10/20 with supporting capability, so that the drop resistance of the battery 10/20 is improved, and the battery 10/20 is protected.

Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims

1. The utility model provides a battery, includes electric core, be provided with utmost point ear on the electric core, its characterized in that, utmost point ear includes first subsection and second subsection, first subsection with the second subsection is through right utmost point ear bending type becomes, first subsection set up in electric core, the second subsection by first subsection is kept away from the one end of electric core is extended, and with first subsection sets up relatively, the battery still includes:

the battery cell comprises a top surface, a bottom surface back to the top surface and a peripheral surface connected between the top surface and the bottom surface, the top surface is provided with the top seal edge, and the first part extends out of the top seal edge;

the battery core is provided with a lug, the surface of the battery core, which is provided with the lug, is subjected to injection molding treatment or encapsulation treatment to form a plastic package part, the plastic package part wraps the lug and the top edge sealing edge, the plastic package part also wraps part or all of the top surface, the plastic package part comprises a through hole and a groove, the through hole penetrates through the plastic package part, the first sub part is accommodated in the through hole, the second sub part is accommodated in the groove, and the joint of the first sub part and the second sub part is positioned between the through hole and the groove, connected and exposed on the surface of the plastic package part;

a conductive portion disposed at a junction of the first and second sections.

2. The battery of claim 1, wherein the cell has a rectangular, circular, or irregular cross-section.

3. The battery of claim 1, wherein the plastic seal is formed by an injection molding process or a potting process.

4. A method of manufacturing a battery according to any one of claims 1-3, characterized by comprising the steps of:

providing a battery cell, wherein a lug is arranged on the battery cell;

providing a conductive part and welding the conductive part on the tab;

5. The utility model provides a battery, includes electric core, be provided with utmost point ear on the electric core, its characterized in that, the battery still includes:

the top sealing edge is used for sealing the lug, and the lug extends out of the top sealing edge;

the plastic package part is formed by performing injection molding treatment or encapsulation treatment on the surface, provided with the lug, of the battery cell, and covers part or all of the lug and the top sealing edge, wherein the plastic package part comprises an upper top surface, and a first groove is formed in the upper top surface; and

a conductive part arranged on the tab and accommodated in the first groove,

the plastic package part covers part of the lug, the lug comprises a first subsection and a second subsection, the first subsection is arranged on the battery core and is located in the plastic package part, the second subsection extends out from one end, far away from the battery core, of the first subsection and is accommodated in the first groove, the conductive part is arranged on the second subsection, the plastic package part further comprises a side face connected between the upper top face and the battery core, a second groove is formed in the side face and is communicated with the first groove, the second subsection and/or the conductive part are/is accommodated in the second groove, and the part, located in the first groove, of the second subsection is further connected to the bottom wall of the first groove.

6. The battery of claim 5, wherein the plastic part further comprises a third groove, the third groove is communicated with the first groove, and the second sub-part and/or the conductive part are/is further accommodated in the third groove.

7. The battery of claim 5, wherein the cross section of the conductive portion is square, L-shaped or U-shaped, and the tab is L-shaped, U-shaped or sheet-shaped.

8. The battery of claim 5, wherein the plastic package part completely covers the tab, the plastic package part further comprises a side surface connected between the upper top surface and the battery core, the side surface is provided with a second groove, the second groove is communicated with the first groove, and a part of the conductive part is connected with the tab and is located in the plastic package part; the other part of the conductive part is accommodated in the first groove and the second groove.

9. A method of manufacturing a battery according to any one of claims 5-7, characterized by comprising the steps of:

providing a battery cell, wherein lugs are arranged on the battery cell and comprise a first subsection and a second subsection;

providing a conductive part and welding the conductive part on the second part;

10. An electronic device, characterized in that it comprises an electrical connection and a battery according to any of claims 5-8, said electrical connection being connected to a conductive part of said battery.

11. The electronic device of claim 10, wherein the electrical connections are copper pins, copper sheets, or pogo pins.

12. A method of testing a battery as claimed in any one of claims 5 to 8, comprising the steps of:

and sliding the electric connector from the first groove and connecting the electric connector with the conductive part to realize the electric connection with the battery.