CN218498287U - Packaging structure and terminal equipment - Google Patents

Abstract

The application discloses packaging structure, packaging method, terminal equipment, packaging structure includes the box-hat battery, the first surface of box-hat battery has the positive cylinder, negative pole contact and notes liquid mouth, the negative pole contact is located between positive cylinder and notes liquid mouth, be provided with protection architecture and flexible printed circuit board at the first surface of box-hat battery, first sheetmetal covers flexible printed circuit board, first flexible lateral wall, first protection lateral wall and positive cylinder, the second sheetmetal covers flexible printed circuit board, the second flexible lateral wall, second protection lateral wall and negative pole contact, the electricity of second sheetmetal and negative pole contact need not to pass through notes liquid mouth, the complicated degree of buckling of second sheetmetal has been reduced, and avoided the increase of packaging structure thickness that the liquid mouth leads to is annotated in the second sheetmetal cover, the space of practicing thrift can increase the box-hat battery and occupy the space of packaging structure, increase battery capacity, improve terminal equipment's duration, satisfy user's high duration requirement to terminal equipment.

Description

Packaging structure and terminal equipment

Technical Field

The present application relates to the field of semiconductor manufacturing, and in particular, to a package structure, a package method, and a terminal device.

Background

With the development of terminal equipment, the requirements of people on lightness, thinness and high endurance of the terminal equipment are increasingly improved, and in the layout of the terminal equipment, the optimization of battery packaging is very important. The packaging structure obtained after the battery is packaged is divided into two parts: a battery part and a lead-out part, the lead-out part being an FPC that electrically leads out a positive electrode and a negative electrode of the battery to a flexible printed circuit board (FPC).

However, the current packaging structure has the problems of thicker thickness and lower battery capacity in the limited layout space of the terminal equipment, which results in poorer cruising ability of the terminal equipment.

Therefore, how to improve the endurance of the terminal device and meet the high endurance requirement of the user is a problem which needs to be solved urgently.

Disclosure of Invention

In order to solve the above problems, the application provides a packaging structure, a packaging method, and a terminal device, which can improve the endurance of the terminal device and meet the high endurance requirement of a user on the terminal device.

In a first aspect, the present application provides a packaging structure, the packaging structure includes a steel-shelled battery, a first surface of the steel-shelled battery has an anode cylinder, a cathode contact and a liquid injection port, the cathode contact is located between the anode cylinder and the liquid injection port, i.e. the anode cylinder, the cathode contact and the liquid injection port are sequentially arranged on the first surface of the steel-shelled battery, a protection structure and a flexible printed circuit board are sequentially arranged on the first surface of the steel-shelled battery in a direction departing from the steel-shelled battery, the flexible printed circuit board covers the protection structure, the flexible printed circuit board is electrically connected with the protection structure to realize signal transmission between the protection structure and the flexible printed circuit board, a first metal sheet covers a side surface of the flexible printed circuit board departing from the steel-shelled battery, the flexible printed circuit board is close to a first flexible side wall of the anode cylinder, the protection structure is close to a first protection side wall of the anode cylinder, and a side surface of the anode cylinder departing from the steel-shelled battery, namely, the first metal sheet is bent for the first time on the first flexible side wall, the second metal sheet is bent for the second time on the positive pole cylinder, the flexible printed circuit board is bent for the second time to realize the electric connection between the flexible printed circuit board and the positive pole cylinder, the second metal sheet covers one side surface of the flexible printed circuit board, which is far away from the steel shell battery, the second flexible side wall of the flexible printed circuit board, which is vertical to the first surface and is vertical to the first flexible side wall, the second protective side wall of the protective structure, which is vertical to the first surface and is vertical to the first protective side wall, and the negative pole contact, namely, the second metal sheet is bent for the first time on the second flexible side wall, the second metal sheet is bent for the second time on the negative pole contact, the electric connection between the flexible printed circuit board and the negative pole contact is realized by the same bending for the second time, the electric connection between the second metal sheet and the negative pole contact does not need to be far away from one side surface of the steel shell battery through a liquid injection port, the bending complexity of the second metal sheet is reduced, the increase of the thickness of the packaging structure caused by the fact that the side surface of the liquid injection port far away from the steel shell battery is avoided, the saved space can increase the space of the steel shell battery occupying the packaging structure, the battery capacity is increased, the cruising ability of the terminal equipment is improved, and the high cruising requirement of a user on the terminal equipment is met.

In one possible implementation, the flexible printed circuit board is close to the third flexible side wall of the liquid injection port, the protection structure is close to the third protection side wall of the liquid injection port and the first liquid injection side wall of the negative contact are flush.

In this application embodiment, the distance between the first protection lateral wall of protection architecture and the third protection lateral wall can equal annotate the liquid mouth and be close to the first notes liquid lateral wall of negative pole contact and the positive pole cylinder is close to the distance between the first anodal lateral wall of negative pole contact, further shortens the length of protection architecture and flexible printed circuit board, reduces the space that packaging structure occupied.

In a possible implementation manner, the protection structure covers a side surface of the liquid injection port, which is away from the steel-shell battery, the flexible printed circuit board is close to a third flexible side wall of the liquid injection port, and the third protection side wall of the protection structure, which is close to the liquid injection port, is flush with a second liquid injection side wall of the liquid injection port, which is away from the negative contact.

In the embodiment of the present application, a distance between the first protection sidewall and the third protection sidewall of the protection structure may be equal to a distance between the second filling sidewall of the filling port far from the negative contact and the first positive sidewall of the positive column near the negative contact.

In a possible implementation manner, one side surface of the protection structure close to the steel shell battery is flush with one side surface of the liquid injection port departing from the steel shell battery.

In the embodiment of the application, one side surface of the protection structure close to the steel shell battery is not bent.

In one possible implementation, the minimum distance between the protection structure and the first surface of the steel-shell battery is the thickness of the liquid injection port.

In this application embodiment, minimum distance between protection architecture and the first surface of box hat battery is for annotating the thickness of liquid mouth, and the distance between protection architecture and the box hat battery shortens, because the extra space that obtains is shortened in the distance can increase the space that the box hat battery occupied to increase battery capacity, improve terminal equipment's duration, satisfy the high duration requirement of user to terminal equipment.

In a possible implementation manner, one side of the protection structure, which is close to the steel-shell battery, is provided with a first recess, and the liquid injection port is arranged in the first recess.

In the embodiment of the present application, the distance between the protection structure and the first surface of the steel-shelled battery can be further reduced by using the first recess of the protection structure.

In one possible implementation, the minimum distance between the protective structure and the first surface of the steel-shelled cell is the thickness of the second metal sheet.

In the embodiment of the application, the minimum distance between the protection structure and the first surface of the steel-shell battery is the thickness of the second metal sheet, so that the overall thickness of the packaging structure is greatly reduced.

In a possible implementation manner, the protection structure includes a printed circuit board, a semiconductor device, and an encapsulation structure, the printed circuit board is located on one side of the flexible printed circuit board close to the steel-shell battery, the semiconductor device is disposed on one side of the printed circuit board close to the steel-shell battery, and the encapsulation structure encapsulates the semiconductor device.

In one possible implementation, the printed circuit board and the flexible printed circuit board are electrically connected using a soldering structure.

In a possible implementation manner, an adhesive material is further included between the protection structure and the steel-shell battery.

In the embodiment of the application, the bonding material fills the gap between the protection structure and the steel shell battery so as to realize the close contact and the fixed connection between the protection structure and the steel shell battery and improve the reliability of the packaging structure.

In one possible implementation, the material of the first metal sheet and the second metal sheet is nickel.

In a second aspect, the present application provides a packaging method, comprising:

obtaining a steel shell battery, wherein a first surface of the steel shell battery is provided with a positive pole cylinder, a negative pole contact and a liquid injection port, and the negative pole contact is positioned between the positive pole cylinder and the liquid injection port;

the surface of one side of the flexible printed circuit board is pasted with a first metal sheet and a second metal sheet, and the pasting directions of the first metal sheet and the second metal sheet are vertical;

arranging the protection structure on the surface of one side, far away from the side where the first metal sheet is attached, of the flexible printed circuit board, wherein the protection structure is electrically connected with the flexible printed circuit board;

bending the second metal sheet to form electric connection between the second metal sheet and the negative contact, wherein the protection structure and the flexible printed circuit board are positioned on one side, away from the steel shell battery, of the first surface of the steel shell battery;

and bending the first metal sheet to form the electric connection between the first metal sheet and the anode column.

In one possible implementation manner, the bending the second metal sheet to form an electrical connection between the second metal sheet and the negative contact, and the positioning of the protection structure and the flexible printed circuit board on the side of the first surface of the steel-shell battery, which is away from the steel-shell battery, includes:

buckle the second sheetmetal, form the second sheetmetal with the electricity of negative pole contact is connected, flexible printed circuit board is close to annotate the third flexible lateral wall of liquid mouth the protection architecture is close to annotate the third protection lateral wall of liquid mouth and annotate the liquid mouth and be close to the first notes liquid lateral wall of negative pole contact flushes.

In a possible implementation manner, the bending the second metal sheet to form an electrical connection between the second metal sheet and the negative contact, where the protection structure and the flexible printed circuit board are located on a side of the first surface of the top-hat battery facing away from the top-hat battery, includes:

the second metal sheet is bent to form the second metal sheet and the electric connection of the negative contact, the protection structure covers one side surface of the liquid injection port, which is far away from the steel shell battery, the flexible printed circuit board is close to a third flexible side wall of the liquid injection port, and the protection structure is close to a third protection side wall of the liquid injection port and the second liquid injection side wall of the negative contact are flush.

In a possible implementation manner, one side surface of the protection structure close to the steel-shell battery is flush with one side surface of the liquid injection port departing from the steel-shell battery.

In one possible implementation manner, the minimum distance between the protection structure and the first surface of the steel-shell battery is the thickness of the liquid injection port.

In a possible implementation manner, one side of the protection structure, which is close to the steel-shell battery, is provided with a first recess, and the liquid injection port is arranged in the first recess.

In one possible implementation, the minimum distance between the protective structure and the first surface of the steel-shelled cell is the thickness of the second metal sheet.

In a possible implementation manner, the protection structure includes a printed circuit board, a semiconductor device, and an encapsulation structure, the printed circuit board is located on one side of the flexible printed circuit board close to the top-hat battery, the semiconductor device is disposed on one side of the printed circuit board close to the top-hat battery, and the encapsulation structure encapsulates the semiconductor device.

In a possible implementation manner, the disposing the protection structure on a side surface of the flexible printed circuit board away from the side surface to which the first metal sheet is attached includes:

and soldering the printed circuit board and the flexible printed circuit board.

In one possible implementation manner, the method further includes:

and filling an adhesive material between the protection structure and the steel-shell battery.

In one possible implementation, the material of the first metal sheet and the second metal sheet is nickel.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes the package structure described in the foregoing embodiment.

The application provides a packaging structure, a packaging method and a terminal device, wherein the packaging structure comprises a steel shell battery, a first surface of the steel shell battery is provided with a positive pole cylinder, a negative pole contact and a liquid injection port, the negative pole contact is positioned between the positive pole cylinder and the liquid injection port, namely the positive pole cylinder, the negative pole contact and the liquid injection port are sequentially arranged on the first surface of the steel shell battery, a protection structure and a flexible printed circuit board are sequentially arranged in the direction of the first surface of the steel shell battery departing from the steel shell battery, the flexible printed circuit board covers the protection structure, the flexible printed circuit board is electrically connected with the protection structure, signal transmission between the protection structure and the flexible printed circuit board is realized, a first metal sheet covers one side surface of the flexible printed circuit board departing from the steel shell battery, the flexible printed circuit board is close to a first flexible side wall of the positive pole cylinder, the protection structure is close to the first protection side wall of the positive pole cylinder and one side surface of the positive pole cylinder departing from the steel shell battery, namely the first metal sheet is bent for the first time on the first flexible side wall, a second metal sheet is bent on the positive pole cylinder, the second side wall, the second metal sheet covers the second side wall of the flexible printed circuit board, the second metal sheet is electrically connected with the second side wall of the flexible printed circuit board, and the second metal sheet is perpendicular to the second side wall of the flexible printed circuit board, and the second metal sheet is perpendicular to the second side wall of the flexible printed circuit board, the bending complexity of the second metal sheet is reduced, the increase of the thickness of the packaging structure caused by the fact that the side surface of the liquid injection port far away from the steel shell battery is avoided, the saved space can increase the space of the steel shell battery occupying the packaging structure, the battery capacity is increased, the cruising ability of the terminal equipment is improved, and the high cruising requirement of a user on the terminal equipment is met.

Drawings

FIG. 1 is a schematic diagram of a package structure;

FIG. 2 is a schematic structural diagram of another package structure;

fig. 3 is a schematic cross-sectional structure diagram of a package structure according to an embodiment of the disclosure;

FIG. 4 is a schematic top view of the package structure shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the package structure shown in FIG. 4 along the direction BB;

fig. 6 is a schematic cross-sectional view of another package structure provided in the embodiments of the present application;

FIG. 7 is a schematic top view of the package structure shown in FIG. 6;

FIG. 8 is a schematic cross-sectional view of the package structure shown in FIG. 7 along direction DD;

fig. 9 is a schematic cross-sectional view of another package structure provided in the embodiment of the present application;

FIG. 10 is a schematic top view of the package structure shown in FIG. 9;

FIG. 11 is a schematic cross-sectional view of the package structure shown in FIG. 10 along direction FF;

fig. 12 is a schematic structural diagram of another package structure provided in the embodiment of the present application;

fig. 13 is a flowchart of a packaging method provided in an embodiment of the present application;

fig. 14-20 are schematic structural diagrams illustrating a package structure manufactured according to a packaging method according to an embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be appreciated by those skilled in the art that the present application may be practiced without departing from the spirit and scope of the present application, and that the present application is not limited to the specific embodiments disclosed below.

Next, the present application will be described in detail with reference to the drawings, and in the detailed description of the embodiments of the present application, the cross-sectional views illustrating the device structures are not enlarged partially in general scale for the sake of illustration, and the drawings are only examples, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

At present, with the development of terminal devices, people increasingly demand terminal devices, especially wearable devices such as bracelets or watches, for lightness, thinness, high endurance and multifunctional integration. The terminal equipment cannot be distributed with batteries with larger battery capacity due to the weight requirement of the terminal equipment, and devices with multiple functions are distributed in the limited space of the terminal equipment, so that the high endurance capacity of the batteries is greatly required. Therefore, in the layout of the terminal equipment, optimization of the battery package is very important. The packaging structure obtained after the battery is packaged is divided into two parts: a battery part and a lead-out part, the lead-out part being a part that electrically leads out a positive electrode and a negative electrode of the battery to a flexible printed circuit board (FPC).

As an implementation manner, referring to fig. 1, a schematic structural diagram of a package structure is shown. The package structure shown in fig. 1 is divided into two parts: the Battery (Battery) part and the extraction part, the extraction part includes protection support, positive post, negative pole contact, annotates liquid mouth, FPC, nickel piece, printed Circuit Board (PCB) and device, and wherein the device is located PCB, is connected with PCB electricity, and FPC and PCB electricity are connected, realize the signal transmission between device and the FPC. The negative contact of the battery is electrically connected with the PCB by using the nickel sheet, and the positive pole of the battery is electrically connected with the PCB by using the nickel sheet. The protective bracket is used for protecting devices, PCBs, nickel sheets and the like arranged in the protective bracket, and the reliability of the packaging structure is improved. However, the thickness of the leading-out part is thicker due to the existence of the protective support, so that the whole thickness of the packaging structure is thicker, the space occupied by the electronic equipment is larger, the space occupied by the battery part of the packaging structure is smaller, the battery capacity of the battery is smaller, and the cruising ability of the terminal equipment is poorer.

As another implementation manner, refer to fig. 2, which is a schematic structural diagram of another package structure at present. The package structure shown in fig. 2 is divided into two parts: the battery part and the part of drawing forth, the part of drawing forth includes positive post, negative pole contact, annotates liquid mouth, nickel piece, FPC, board to board connector (BTB), mould plastics (molding) structure and gum, including PCB and device in the structure of moulding plastics, wherein the device is connected with the PCB electricity, and FPC passes through the solder joint with PCB and is connected electrically. The negative pole contact of battery utilizes the nickel piece of 4 times of buckling to realize being connected with PCB's electricity, and the nickel piece of buckling covers the side surface of annotating the liquid mouth and keeping away from the battery, and the anodal post of battery utilizes the nickel piece of 2 times of buckling to realize being connected with PCB's electricity, and the nickel piece of connecting the anodal post and the nickel piece of connecting the negative pole contact cover two relative lateral walls of injection structure respectively. After the protective holder is removed, the thickness of the lead-out portion is reduced, and the distance between the injection-molded structure and the battery surface is reduced to the sum of the thickness of the liquid injection port and the thickness of the nickel plate. However, the packaging structure still has the problem that the thickness of the lead-out part is thicker, and when the battery is electrically led out, the nickel sheet is bent more, the bending process is complex, the technical barrier is high, the technical difficulty is higher, the process flow is increased, and the process efficiency is low.

Therefore, the current packaging structure has the problems that the lead-out part is thick, the occupied space of the packaging structure is large, the occupied space of the battery part of the packaging structure is small, and the endurance of the terminal equipment is poor.

Therefore, how to improve the endurance of the terminal device and meet the high endurance requirement of the user is an urgent problem to be solved.

Based on this, the embodiment of the application provides a packaging structure, a packaging method and a terminal device, the packaging structure includes a steel-shell battery, a first surface of the steel-shell battery has a positive pole cylinder, a negative pole contact and a liquid injection port, the negative pole contact is located between the positive pole cylinder and the liquid injection port, namely, the positive pole cylinder, the negative pole contact and the liquid injection port are sequentially arranged on the first surface of the steel-shell battery, a protection structure and a flexible printed circuit board are sequentially arranged on the first surface of the steel-shell battery in a direction departing from the steel-shell battery, the flexible printed circuit board covers the protection structure, the flexible printed circuit board is electrically connected with the protection structure to realize signal transmission between the protection structure and the flexible printed circuit board, a first metal sheet covers a side surface of the flexible printed circuit board departing from the steel-shell battery, the flexible printed circuit board is close to a first flexible side wall of the positive pole cylinder, the protection structure is close to the first protection side wall of the positive pole cylinder and a side surface of the cylinder departing from the steel-shell battery, namely, the first metal sheet is bent for the first time on the first flexible side wall, the second metal sheet is bent for the second time on the positive pole cylinder, the flexible printed circuit board is bent for the second time to realize the electric connection between the flexible printed circuit board and the positive pole cylinder, the second metal sheet covers one side surface of the flexible printed circuit board, which is far away from the steel shell battery, the second flexible side wall of the flexible printed circuit board, which is vertical to the first surface and is vertical to the first flexible side wall, the second protective side wall of the protective structure, which is vertical to the first surface and is vertical to the first protective side wall, and the negative pole contact, namely, the second metal sheet is bent for the first time on the second flexible side wall, the second metal sheet is bent for the second time on the negative pole contact, the electric connection between the flexible printed circuit board and the negative pole contact is realized by the same bending for the second time, the electric connection between the second metal sheet and the negative pole contact does not need to be far away from one side surface of the steel shell battery through a liquid injection port, the bending complexity of the second metal sheet is reduced, the increase of the thickness of the packaging structure caused by the fact that the side surface of the liquid injection port far away from the steel shell battery is avoided, the saved space can increase the space of the steel shell battery occupying the packaging structure, the battery capacity is increased, the cruising ability of the terminal equipment is improved, and the high cruising requirement of a user on the terminal equipment is met.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 3, a schematic cross-sectional structure diagram of a package structure according to an embodiment of the present disclosure is shown. Fig. 3 is a cross-section taken along the AA direction of a top view schematic diagram of the package structure shown in fig. 4, and fig. 5 is a cross-section taken along the BB direction of the top view schematic diagram of the package structure shown in fig. 4.

The packaging structure provided by the embodiment of the application comprises a steel-shell battery 100, wherein the steel-shell battery 100 is provided with a first surface 101, the first surface 101 is provided with a positive pole cylinder 110, a negative pole contact 120 and a liquid injection port 130, the positive pole cylinder 110 and the negative pole contact 120 are used for leading out electricity from the battery, and the materials of the positive pole cylinder 110 and the negative pole contact 120 can be materials with better electric conductivity, such as metal materials. The positive electrode cartridge 110, the negative electrode contact 120, and the liquid inlet 130 are sequentially arranged, and the negative electrode contact 120 is located between the positive electrode cartridge 110 and the liquid inlet 130, as shown in fig. 3 or 4. Specifically, the thickness of the pouring port 130 may be 0.6 mm, and the thickness direction of the pouring port 130 is a direction perpendicular to the first surface 101 of the steel-shell battery 100.

The packaging structure provided by the embodiment of the application comprises a protection structure 140 and a flexible printed circuit board 150, wherein the protection structure 140 and the flexible printed circuit board 150 are arranged in the direction of the first surface 101 of the steel-shell battery 100 away from the steel-shell battery 100, the flexible printed circuit board 150 is arranged on the side surface of the protection structure 140 away from the steel-shell battery 100, and the flexible printed circuit board 150 covers the protection structure 140, specifically, in the direction parallel to the first surface 101 of the steel-shell battery 100, the characteristic dimension of the flexible printed circuit board 150 is the same as that of the protection structure 140, which is shown in fig. 4 or fig. 5. The flexible printed circuit board 150 and the protection structure 140 are electrically connected to enable signal transmission between the flexible printed circuit board 150 and the protection structure 140.

The protective structure 140 has a sidewall perpendicular to the first surface 110 of the steel can battery 100: the protective structure 140 is close to the first protective sidewall 141 of the positive electrode column 110, the second protective sidewall 142 of the protective structure 140 is perpendicular to the first surface 101 and perpendicular to the first protective sidewall 141, and the third protective sidewall 143 of the protective structure 140 is close to the liquid inlet 130, as shown in fig. 3 or fig. 5.

Accordingly, the flexible printed circuit board 150 has a sidewall perpendicular to the first surface 110 of the steel-shelled battery 100: the flexible printed circuit board 150 is close to the first flexible sidewall 151 of the positive post 110, the second flexible sidewall 152 of the flexible printed circuit board 150 is perpendicular to the first surface 101 and perpendicular to the first flexible sidewall 151, and the third flexible sidewall 153 of the flexible printed circuit board 150 is close to the liquid injection port 130, as shown in fig. 3 or fig. 4.

The first protective sidewall 141 of the protective structure 140, the first flexible sidewall 151 of the flexible printed circuit board 150, and the first positive sidewall 112 of the positive post 110 near the negative contact 120 are flush, as shown with reference to fig. 3 or 4.

The package structure provided by the embodiment of the present application includes a first metal sheet 160 and a second metal sheet 170, where the first metal sheet 160 implements electrical connection between the flexible printed circuit board 150 and the positive post 110, and the second metal sheet 170 implements electrical connection between the flexible printed circuit board 150 and the negative contact 120. The material of the first metal sheet 160 and the second metal sheet 170 may be a material with better conductivity, such as a metal material, and in the embodiment of the present application, the material of the first metal sheet 160 and the second metal sheet 170 is nickel.

The first metal sheet 160 covers a side surface of the flexible printed circuit board 150 facing away from the can battery 100, the first flexible sidewall 151, and the first protective sidewall 141, and extends to cover a side surface 111 of the positive electrode tab 110 facing away from the can battery 100. That is, the first metal sheet 160 covers a portion of the surface of the flexible printed circuit board 150, the first flexible sidewall 151 is bent for the first time to cover the first flexible sidewall 151 and the first protective sidewall 141, and the surface 111 of the positive post 110 is bent for the second time to cover the surface 111 of the positive post 110. The two-time bending process of the first metal sheet 160 is simple, the first metal sheet 160 covers the first flexible sidewall 151 and the first protection sidewall 141 to realize the shortest electrical connection between the flexible printed circuit board 150 and the anode post 110, so that the process material is saved, and the energy loss caused by long electrical connection is reduced.

The second metal sheet 170 covers a side surface of the flexible printed circuit board 150 facing away from the steel-shelled battery 100, the second flexible sidewall 152, the second protective sidewall 142, and the negative contact 120. The second metal sheet 170 covers a part of the surface of the flexible printed circuit board 150, the second flexible sidewall 152 is bent for the first time to cover the second flexible sidewall 152 and the second protection sidewall 142, and the negative contact 120 on the first surface 101 is bent for the second time to cover the negative contact 120. The second metal sheet 170 is also subjected to the two-fold process, and the shortest electrical connection between the flexible printed circuit board 150 and the negative contact 120 is achieved by covering the second flexible sidewall 152 and the second protection sidewall 142.

That is to say, the second metal sheet 170 is no longer bent along the third protection sidewall 143, but is bent along the second protection sidewall 142 perpendicular to the third protection sidewall 143, so as to provide the shortest electrical connection between the flexible printed circuit board 150 and the negative contact 120, compared with the package structure in which the second metal sheet 170 is subjected to 4 bending processes and covers the side surface of the liquid injection port 130 away from the steel-shelled battery 100, the bending times of the second metal sheet 170 are reduced, the complexity of the bending processes is reduced, process materials are saved, energy loss caused by long electrical connection can be reduced, and an increase in the thickness of the package structure caused by the second metal sheet 170 covering the side surface of the liquid injection port 130 away from the steel-shelled battery 100 is avoided, the distance between the protection structure 140 and the steel-shelled battery 100 is shortened, and an extra space obtained by the shortened distance in the package structure can increase a space occupied by the steel-shelled battery to increase battery capacity, improve endurance of the terminal device, and meet a high endurance requirement of a user for the terminal device.

In the embodiment of the present application, the length of the protection structure 140 may also affect the space occupied by the package structure in the terminal device, and therefore, the length of the protection structure 140 may be optimized, so that the reduced space can increase the layout space of other devices in the terminal device or increase the battery capacity of the battery, and the length direction of the protection structure 140 is the direction from the first protection sidewall 141 to the third protection sidewall 143 of the protection structure 140.

As a possible implementation manner, the protection structure 140 may cover a side surface of the liquid filling port 130 away from the steel-shell battery 100, and the third flexible sidewall 153 of the flexible printed circuit board 150 close to the liquid filling port 130, the third protection sidewall 143 of the protection structure 140 close to the liquid filling port 130 are flush with the second liquid filling sidewall 132 of the liquid filling port 130 far away from the negative contact 120, as shown with reference to fig. 3 or fig. 4, wherein the liquid filling port 130 has a sidewall perpendicular to the first surface 101, including the first liquid filling sidewall 131 of the liquid filling port 130 close to the negative contact 120 and the second liquid filling sidewall 132 of the liquid filling port 130 far away from the negative contact 120. That is, the distance between the first protection sidewall 141 and the third protection sidewall 143 of the protection structure 140 may be equal to the distance between the second liquid injection sidewall 132 of the liquid injection port 130 away from the negative contact 120 and the first positive sidewall 112 of the positive electrode cylinder 110 close to the negative contact 120.

As an example, a side surface of the protection structure 140 close to the top-hat battery 100 and a side surface of the liquid injection port 130 away from the top-hat battery 100 are flush, that is, a side surface of the protection structure 140 close to the top-hat battery 100 is not bent, as shown in fig. 3, the minimum distance between the protection structure 140 and the first surface 101 of the top-hat battery 100 is the thickness of the liquid injection port 130, and compared with an encapsulation structure in which the second metal sheet 170 is bent 4 times and covers a side surface of the liquid injection port 130 away from the top-hat battery 100, the distance between the protection structure 140 and the top-hat battery 100 is prevented from being increased due to the second metal sheet 170 covering the side surface of the liquid injection port 130 away from the top-hat battery 100, the distance between the protection structure 140 and the top-hat battery 100 is shortened, and the thickness of the second metal sheet 170 is shortened, and the extra space obtained due to the distance shortening can increase the space occupied by the top-hat battery, so as to increase the battery capacity, improve the endurance of the terminal device, and meet the high endurance requirement of the user for the terminal device.

As another example, the protection structure 140 has a first recess 144 on a side close to the top-hat battery 100, the first recess 144 has the liquid inlet 130 therein, and referring to fig. 6, 7 or 8, fig. 6 is a schematic top view of the package structure shown in fig. 7 and is taken along a direction CC, fig. 8 is a schematic top view of the package structure shown in fig. 7 and is taken along a direction DD, that is, the surface of the protection structure 140 on a side close to the top-hat battery 100 may be uneven, the protection structure 140 has a first recess 144 on a side close to the top-hat battery 100, the first recess 144 corresponds to the liquid inlet 130, and the surface of the first recess 144 may contact the surface of the liquid inlet 130.

The distance between the protection structure 140 and the first surface 101 of the steel-shell battery 100 can be further reduced by using the first recess 144 of the protection structure 140, the minimum distance between the protection structure 140 and the first surface 101 of the steel-shell battery 100 can be reduced to the thickness of the second metal sheet 170 by the thickness of the liquid injection port 130, the overall thickness of the packaging structure is greatly reduced, and the saved space can be used for increasing the volume of the battery to improve the battery capacity or providing more functions for the terminal equipment by using the layout of other devices in the terminal equipment. Specifically, the thickness of the second metal sheet 170 may be 0.1 mm.

As another possible implementation manner, the protection structure 140 may not cover the surface of the liquid filling port 130 away from the top-hat battery 100, and the third flexible sidewall 153 of the flexible printed circuit board 150 near the liquid filling port 130, and the third protection sidewall 143 of the protection structure 140 near the liquid filling port 130 are flush with the first liquid filling sidewall 131 of the liquid filling port 130 near the negative contact 120, as shown in fig. 9, 10, or 11, fig. 9 is a cross section taken along EE direction along a top view of the package structure shown in fig. 10, and fig. 11 is a cross section taken along FF direction along a top view of the package structure shown in fig. 10. That is, the distance between the first protection sidewall 141 and the third protection sidewall 143 of the protection structure 140 may be equal to the distance between the first electrolyte injection sidewall 131 of the electrolyte injection port 130 near the negative contact 120 and the first positive sidewall 112 of the positive electrode column 110 near the negative contact 120, further shortening the length of the protection structure 140 and the flexible printed circuit board 150, and reducing the space occupied by the packaging structure.

In the packaging structure, one side surface of the protection structure 140 close to the top-hat battery 100 is not bent, and does not cover the liquid injection port 130, as shown in fig. 10, the minimum distance between the protection structure 140 and the first surface 101 of the top-hat battery 100 is the thickness of the second metal sheet 170, so that the overall thickness of the packaging structure is greatly reduced, the length of the protection structure 140 is also reduced, the space occupied by the packaging structure is further reduced, and the saved space can be used for increasing the volume of the battery to improve the battery capacity or used for the layout of other devices in terminal equipment to provide more functions for the terminal equipment.

As can be seen from the above description, by controlling the length and shape of the protection structure 140, the thickness and volume of the package structure except for the battery can be further reduced on the basis of adjusting the bending direction of the second metal sheet 170, so that there is extra space to increase the volume of the battery, increase the battery capacity, and improve the endurance of the terminal device.

In the embodiment of the present application, the protection structure 140 includes a printed circuit board 145, a semiconductor device 146 and an encapsulation structure 147, as shown in fig. 12, the printed circuit board 145 is located on a side of the flexible printed circuit board 150 close to the steel-shell battery 100, the semiconductor device 146 is disposed on a side of the printed circuit board 145 close to the steel-shell battery 100, and the encapsulation structure 147 encapsulates the semiconductor device 146 so as to provide protection and support for the semiconductor device 146, wherein the printed circuit board 145 and the flexible printed circuit board 150 are electrically connected by using a soldering structure.

In the embodiment of the present application, an adhesive material 180 may be further included between the protection structure 140 and the can battery 100, and as shown in fig. 12, the adhesive material 180 fills a gap between the protection structure 140 and the can battery 100 to achieve close contact and fixed connection between the protection structure 140 and the can battery 100, thereby improving reliability of the package structure.

In embodiments of the present application, the flexible printed circuit board 150 may be connected with a board-to-board connector 190 to enable signal transmission of package structures and other structures.

In the embodiment of the present application, the thickness of the liquid injection port 130 and the positive electrode column 110 can also be reduced to further reduce the volume occupied by the encapsulation structure.

The application provides a packaging structure, a packaging method and a terminal device, wherein the packaging structure comprises a steel shell battery, a first surface of the steel shell battery is provided with a positive pole cylinder, a negative pole contact and a liquid injection port, the negative pole contact is positioned between the positive pole cylinder and the liquid injection port, namely the positive pole cylinder, the negative pole contact and the liquid injection port are sequentially arranged on the first surface of the steel shell battery, a protection structure and a flexible printed circuit board are sequentially arranged in the direction of the first surface of the steel shell battery departing from the steel shell battery, the flexible printed circuit board covers the protection structure, the flexible printed circuit board is electrically connected with the protection structure, signal transmission between the protection structure and the flexible printed circuit board is realized, a first metal sheet covers one side surface of the flexible printed circuit board departing from the steel shell battery, the flexible printed circuit board is close to a first flexible side wall of the positive pole cylinder, the protection structure is close to the first protection side wall of the positive pole cylinder and one side surface of the positive pole cylinder departing from the steel shell battery, namely the first metal sheet is bent for the first time on the first flexible side wall, a second metal sheet is bent on the positive pole cylinder, the second side wall, the second metal sheet covers the second side wall of the flexible printed circuit board, the second metal sheet is electrically connected with the second side wall of the flexible printed circuit board, and the second metal sheet is perpendicular to the second side wall of the flexible printed circuit board, and the second metal sheet is perpendicular to the second side wall of the flexible printed circuit board, the bending complexity of the second metal sheet is reduced, the increase of the thickness of the packaging structure caused by the fact that the side surface of the liquid injection port away from the steel shell battery is covered by the second metal sheet is avoided, the space of the packaging structure occupied by the steel shell battery can be increased by the saved space, the battery capacity is increased, the cruising ability of the terminal equipment is improved, and the high cruising requirement of a user on the terminal equipment is met.

Based on a package structure provided in an embodiment of the present application, an embodiment of the present application further provides a package method, as shown in fig. 13, which is a flowchart of the package method provided in the embodiment of the present application, and fig. 14 to 20 are schematic structural diagrams of the package structure in a manufacturing process, where the method may include:

and S101, obtaining the steel-shell battery 100, and referring to fig. 14.

In the embodiment of the present application, the steel-can battery 100 may be obtained to be packaged, and fig. 14 is a schematic top view of the steel-can battery 100. The steel-shell battery 100 has a first surface 101, the first surface 101 is provided with a positive pole cylinder 110, a negative pole contact 120 and a liquid injection port 130, the positive pole cylinder 110 and the negative pole contact 120 are used for electrically leading out the battery, and the materials of the positive pole cylinder 110 and the negative pole contact 120 can be materials with better electric conductivity, such as metal materials. The positive electrode cartridge 110, the negative electrode contact 120, and the liquid inlet 130 are arranged in this order, and the negative electrode contact 120 is located between the positive electrode cartridge 110 and the liquid inlet 130, as shown in fig. 14. Specifically, the thickness of the pouring port 130 may be 0.6 mm, and the thickness direction of the pouring port 130 is a direction perpendicular to the first surface 101 of the steel-shell battery 100.

S102, a first metal sheet 160 and a second metal sheet 170 are surface-mounted on one side of the flexible printed circuit board 150, as shown in fig. 15.

In the embodiment of the present application, the first metal sheet 160 and the second metal sheet 170 may be surface-mounted on one side of the flexible printed circuit board 150, and the first metal sheet 160 and the second metal sheet 170 may be surface-mounted on the same side of the flexible printed circuit board 150. The mounting direction of the first metal sheet 170 and the second metal sheet 160 is perpendicular, the mounting direction of the first metal sheet 170 may be a length extending direction of the flexible printed circuit board 150, and the mounting direction of the second metal sheet 170 is perpendicular to the length extending direction of the flexible printed circuit board 150. The specific mounting process may be Surface Mounted Technology (SMT).

The material of the first metal sheet 160 and the second metal sheet 170 may be a material with better conductivity, such as a metal material, and in the embodiment of the present application, the material of the first metal sheet 160 and the second metal sheet 170 is nickel.

In an embodiment of the present application, the flexible printed circuit board 150 may be connected with a board-to-board connector 190 to enable signal transmission of the flexible printed circuit board 150 and other structures.

S103, a protection structure 140 is disposed on a surface of the flexible printed circuit board 150 away from the side to which the first metal sheet 160 is attached, as shown in fig. 16.

In the embodiment of the present application, the protection structure 140 is disposed on a surface of the flexible printed circuit board 150 away from the side to which the first metal sheet 160 is attached, that is, the protection structure 140 is disposed on a surface of the flexible printed circuit board 150 to which the first metal sheet 160 and the second metal sheet 170 are not attached, and the protection structure 140 is electrically connected to the flexible printed circuit board 150. Specifically, the protection structure 140 may be soldered to the other side surface of the flexible printed circuit board 150 to which the first metal sheet 160 and the second metal sheet 170 are attached by using a reflow soldering process.

In the embodiment of the present application, the protection structure 140 includes a printed circuit board 145, a semiconductor device 146 and an encapsulating structure 147, as shown in fig. 13, the printed circuit board 145 is located on a side of the flexible printed circuit board 150 close to the top-hat battery 100, the semiconductor device 146 is disposed on a side of the printed circuit board 145 close to the top-hat battery 100, and the encapsulating structure 147 encapsulates the semiconductor device 146 so as to provide protection and support for the semiconductor device 146.

Specifically, the printed circuit board 145 and the flexible printed circuit board 150 may be soldered to achieve electrical connection of the printed circuit board 145 and the flexible printed circuit board 150.

And S104, bending the second metal sheet 170 to form an electrical connection between the second metal sheet 170 and the negative contact 120, as shown in reference to FIGS. 17-20.

In an embodiment of the present application, the second metal sheet 170 may be bent to form an electrical connection between the second metal sheet 170 and the negative contact 120. Specifically, the second metal sheet 170 and the negative electrode contact 120 may be welded to electrically connect the second metal sheet 170 and the negative electrode contact 120, as shown in fig. 17 and 18, fig. 18 is a cross section taken along the GG direction of the package structure shown in fig. 17.

And then bending the second metal sheet 170 so that the protection structure 140 and the flexible printed circuit board 150 are located on the side of the first surface 101 of the steel-shelled battery 100 facing away from the steel-shelled battery 100, i.e. the protection structure 140 covers the first surface 101 of the steel-shelled battery 100, so that the second metal sheet 170 covers the second flexible side wall 152 and the second protection side wall 142, as shown in fig. 19 and 20, fig. 20 is a cross section taken along the HH direction of the packaging structure shown in fig. 19.

S105, bending the first metal sheet 160 to form an electrical connection between the first metal sheet 160 and the positive electrode column 110, as shown in fig. 12.

In the embodiment of the present application, after the second metal sheet 170 is bent, the protection structure 140 already covers the first surface 101 of the steel-shelled battery 100, and then the first metal sheet 160 is bent such that the first metal sheet 160 covers the first flexible sidewall 151 and the first protection sidewall 141, and the first metal sheet 160 and the positive electrode cylinder 110 are welded to achieve electrical connection of the first metal sheet 160 and the positive electrode cylinder 110.

In the embodiment of the present application, after the electrical connection between the first metal sheet 160 and the positive electrode can 110 is formed, an adhesive material may be further filled between the protective structure 140 and the can battery 100, and as shown in fig. 12, the adhesive material 180 fills a gap between the protective structure 140 and the can battery 100 to achieve a tight contact and a fixed connection between the protective structure 140 and the can battery 100, thereby improving the reliability of the package structure.

It is understood that, in practical applications, the order of S101 and S102 may be adjusted, and S102 may be executed before S101.

In the embodiment of the present application, when the second metal sheet 170 is bent to form the electrical connection between the second metal sheet 170 and the negative contact 120, the volume of the package structure may be controlled by controlling the length of the protection structure 140. The length direction of the protection structure 140 is a direction in which the first protection sidewall 141 of the protection structure 140 faces the third protection sidewall 143.

As a possible implementation manner, the protection structure 140 may cover a side surface of the liquid filling port 130 away from the steel-shell battery 100, and the third flexible sidewall 153 of the flexible printed circuit board 150 close to the liquid filling port 130, and the third protection sidewall 143 of the protection structure 140 close to the liquid filling port 130 are flush with the second liquid filling sidewall 132 of the liquid filling port 130 far from the negative contact 120, as shown in fig. 3 or fig. 4, where the liquid filling port 130 has a sidewall perpendicular to the first surface 101, and includes the first liquid filling sidewall 131 of the liquid filling port 130 close to the negative contact 120 and the second liquid filling sidewall 132 of the liquid filling port 130 far from the negative contact 120. That is, the distance between the first and third protection side walls 141 and 143 of the protection structure 140 may be equal to the distance between the second filling side wall 132 of the filling port 130, which is far from the negative contact 120, and the first positive side wall 112 of the positive electrode barrel 110, which is near to the negative contact 120.

As an example, a side surface of the protection structure 140 close to the top-hat battery 100 and a side surface of the liquid injection port 130 away from the top-hat battery 100 are flush, that is, a side surface of the protection structure 140 close to the top-hat battery 100 is not bent, as shown in fig. 3, the minimum distance between the protection structure 140 and the first surface 101 of the top-hat battery 100 is the thickness of the liquid injection port 130, and compared with an encapsulation structure in which the second metal sheet 170 is bent 4 times and covers a side surface of the liquid injection port 130 away from the top-hat battery 100, the distance between the protection structure 140 and the top-hat battery 100 is prevented from being increased due to the second metal sheet 170 covering the side surface of the liquid injection port 130 away from the top-hat battery 100, the distance between the protection structure 140 and the top-hat battery 100 is shortened, and the thickness of the second metal sheet 170 is shortened, and the extra space obtained due to the distance shortening can increase the space occupied by the top-hat battery, so as to increase the battery capacity, improve the endurance of the terminal device, and meet the high endurance requirement of the user for the terminal device.

As another example, a first recess 144 may be formed on a side of the protection structure 140 close to the steel-can battery 100, and the liquid filling port 130 may be subsequently disposed in the first recess 144, as shown in fig. 6, 7 or 8, that is, a surface of the side of the protection structure 140 close to the steel-can battery 100 may be uneven, the side of the protection structure 140 close to the steel-can battery 100 has the first recess 144, the first recess 144 corresponds to the liquid filling port 130, and a surface of the first recess 144 may contact a surface of the liquid filling port 130. The distance between the protection structure 140 and the first surface 101 of the steel-shell battery 100 can be further reduced by using the first recess 144 of the protection structure 140, the minimum distance between the protection structure 140 and the first surface 101 of the steel-shell battery 100 can be reduced to the thickness of the second metal sheet 170 by the thickness of the liquid filling port 130, the overall thickness of the packaging structure is greatly reduced, and the saved space can be used for increasing the volume of the battery to improve the battery capacity or providing more functions for the terminal equipment by using the layout of other devices in the terminal equipment. Specifically, the thickness of the second metal sheet 170 may be 0.1 mm.

As another possible implementation manner, the protection structure 140 may not cover the surface of the pouring outlet 130 on the side away from the steel-shell battery 100, and the third flexible sidewall 153 of the flexible printed circuit board 150 close to the pouring outlet 130, and the third protection sidewall 143 of the protection structure 140 close to the pouring outlet 130 are flush with the first pouring sidewall 131 of the pouring outlet 130 close to the negative contact 120, as shown in fig. 9, 10 or 11. That is, the distance between the first protection sidewall 141 and the third protection sidewall 143 of the protection structure 140 can be equal to the distance between the first electrolyte injection sidewall 131 of the electrolyte injection port 130 close to the negative contact 120 and the first positive sidewall 112 of the positive electrode column 110 close to the negative contact 120, so as to further shorten the lengths of the protection structure 140 and the flexible printed circuit board 150 and reduce the space occupied by the package structure.

In the packaging structure, the surface of the side of the protection structure 140 close to the steel-shell battery 100 is not bent, and does not cover the liquid filling port 130, as shown in fig. 10, the minimum distance between the protection structure 140 and the first surface 101 of the steel-shell battery 100 is the thickness of the second metal sheet 170, so that the overall thickness of the packaging structure is greatly reduced, the length of the protection structure 140 is also reduced, the space occupied by the packaging structure is further reduced, and the saved space can be used for increasing the volume of the battery to improve the battery capacity or used for the layout of other devices in the terminal equipment to provide more functions for the terminal equipment.

As can be seen from the above description, by controlling the length and shape of the protection structure 140, the thickness and volume of the package structure except for the battery can be further reduced on the basis of adjusting the bending direction of the second metal sheet 170, so that there is extra space to increase the volume of the battery, increase the battery capacity, and improve the endurance of the terminal device.

Therefore, according to the packaging method provided by the embodiment of the application, the first metal sheet 160 and the second metal sheet 170 can be mounted at the same time, bending and welding processes can be performed successively, full-automatic assembly can be utilized, the first metal sheet 160 and the second metal sheet 170 are bent only 2 times, the process flow is simple, and the packaging efficiency is high.

The embodiment of the application also provides the terminal equipment, and the packaging structure of the terminal equipment in the embodiment is provided. The terminal device may be a wearable device, such as a bracelet or a watch.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" is used to describe the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b and c may be single or plural.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (12)

1. A package structure, comprising:

the first surface of the steel shell battery is provided with a positive pole cylinder, a negative pole contact and a liquid injection port, and the negative pole contact is positioned between the positive pole cylinder and the liquid injection port;

a protection structure and a flexible printed circuit board are arranged on the first surface of the steel shell battery in a direction deviating from the steel shell battery, the flexible printed circuit board covers the protection structure, and the flexible printed circuit board is electrically connected with the protection structure;

the first metal sheet covers one side surface of the flexible printed circuit board, which is far away from the steel shell battery, the first flexible side wall of the flexible printed circuit board, which is close to the positive pole column, the first protective side wall of the protective structure, which is close to the positive pole column, and one side surface of the positive pole column, which is far away from the steel shell battery;

the second sheetmetal covers flexible printed circuit board deviates from a side surface of the steel shell battery, the flexible printed circuit board is perpendicular to the first surface and perpendicular to the second flexible side wall of the first flexible side wall, the protection structure is perpendicular to the first surface and perpendicular to the second protection side wall of the first protection side wall and the negative contact.

2. The package structure according to claim 1, wherein the flexible printed circuit board is flush with the third flexible sidewall of the liquid injection port, and the third protection sidewall of the protection structure adjacent to the liquid injection port is flush with the first liquid injection sidewall of the liquid injection port adjacent to the negative contact.

3. The packaging structure according to claim 1, wherein the protection structure covers a side surface of the liquid injection port facing away from the steel-shell battery, the flexible printed circuit board is close to a third flexible side wall of the liquid injection port, and the third protection side wall of the protection structure close to the liquid injection port is flush with a second liquid injection side wall of the liquid injection port far away from the negative contact.

4. The packaging structure according to claim 3, wherein a side surface of the protection structure close to the steel-shell battery is flush with a side surface of the liquid filling port facing away from the steel-shell battery.

5. The packaging structure according to claim 4, wherein the minimum distance between the protection structure and the first surface of the steel-shell battery is the thickness of the liquid injection port.

6. The package structure according to claim 3, wherein a side of the protection structure close to the top-hat battery has a first recess, and the first recess has the liquid injection port therein.

7. The encapsulation structure according to claim 2 or 6, wherein the minimum distance between the protection structure and the first surface of the steel-shelled cell is the thickness of the second metal sheet.

8. The package structure according to any one of claims 1 to 6, wherein the protection structure comprises a printed circuit board, a semiconductor device and an encapsulating structure, the printed circuit board is located on one side of the flexible printed circuit board close to the top-hat battery, the semiconductor device is arranged on one side of the printed circuit board close to the top-hat battery, and the encapsulating structure encapsulates the semiconductor device.

9. The package structure of claim 8, wherein the printed circuit board and the flexible printed circuit board are electrically connected using a solder structure.

10. The package structure of any one of claims 1 to 6, further comprising an adhesive material between the protective structure and the steel can battery.

11. The package structure according to any one of claims 1 to 6, wherein the material of the first metal sheet and the second metal sheet is nickel.

12. A terminal device, characterized in that it comprises a package structure according to any one of claims 1 to 11.

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