CN211789116U

CN211789116U - Battery and electronic equipment

Info

Publication number: CN211789116U
Application number: CN202020794544.0U
Authority: CN
Inventors: 邹本辉
Original assignee: Suzhou Rongrui Electronic Technology Co ltd
Current assignee: Suzhou Rongrui Electronic Technology Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-10-27
Anticipated expiration: 2030-05-13

Abstract

The application provides a battery and an electronic device. A battery, comprising: a metal housing; an electrode disposed within the metal housing, a gap being formed between the electrode and the metal housing; the filler is filled in the gap and seals the metal shell and the electrode; the filler includes ceramic and glass. The battery has high safety and long service life.

Description

Battery and electronic equipment

Technical Field

The application relates to the technical field of electronic devices, in particular to a battery and electronic equipment.

Background

The metal shell and the electrode of the traditional lithium battery are sealed by polymer, the metal shell and the electrode of the fuel battery are sealed by glass-metal, and other packaging devices are sealed by glass-metal.

The polymer belongs to organic materials, and aging easily after time lapse or heating, polymer and electrode metal bonding strength are low, cause the battery gas leakage, and the battery life reduces, can not guarantee the security better, and inside polymer electrode terminal had lasted moisture in the air and penetrated the battery from metalwork and polymer junction, water and the inside lithium salt reaction of battery reduced the battery performance, also had extremely strong corrosivity to the battery is whole simultaneously, caused the potential safety hazard.

Therefore, the safety of the existing battery cannot be guaranteed, and the service life of the battery is short.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a battery and an electronic device, so as to ensure the safety of the battery and improve the service life of the battery.

In a first aspect, an embodiment of the present application provides a battery, including: a metal housing; an electrode disposed within the metal housing, a gap being formed between the electrode and the metal housing; the filler is filled in the gap and seals the metal shell and the electrode; the filler includes ceramic and glass.

In the embodiment of the present application, in contrast to the prior art, the electrodes of the battery and the metal case are filled with ceramic and glass. The combination of glass and metal can ensure the air tightness of the battery; the ceramic improves the torsion and the impact strength, and can also protect the battery from being fully insulated when the battery is subjected to high temperature. Therefore, the battery has insulation property under high temperature, long service life and safety, can be applied to devices or equipment with torque requirements, and has high applicability and practicability.

As a possible realization, the ceramic and the glass are alternately arranged between the inner wall of the metal housing and the electrode.

In the embodiment of the application, two fillers can be alternately arranged between the inner wall of the metal shell and the electrode so as to ensure that the fillers play a role in improving the safety and the air tightness of the battery.

As a possible implementation manner, the gap is an annular gap, and the ceramic and the glass are alternately arranged between the inner wall of the metal shell and the electrode along the annular gap in a radial direction, an axial direction or a circumferential direction.

In this application embodiment, to the annular gap, can be along the annular gap and be the alternative setting of equidirectional not, guarantee that the filler plays the effect that improves the security and the gas tightness of battery.

As a possible realization, the ceramic is located above the glass in the gap between the inner wall of the metal housing and the electrode.

In the embodiment of the present application, the ceramic may be disposed above the glass, so that the two fillers can fully exert their respective functions.

As a possible realization, the thickness of the glass is greater than the thickness of the ceramic.

In the embodiment of the present application, the thickness of the glass is larger, and the airtightness of the battery can be greatly improved.

As a possible implementation manner, the filler is a filler subjected to a sintering treatment.

In the embodiment of the application, the filler is sintered, so that the strength, the air tightness and the like after sintering are greatly improved, and the performance of the battery is further improved.

As a possible realization, a clamping member for clamping the filling material is arranged on the inner wall of the metal shell and/or the electrode.

In this application embodiment, can also set up chucking spare to the chucking filler, make the filler can fully fill in the clearance, improve the gas tightness of battery.

As a possible implementation manner, a groove is formed in the inner wall of the metal shell, a protrusion corresponding to the groove is formed in the electrode, and the groove and the protrusion are used for clamping the filler.

In this application embodiment, through recess and arch as chucking spare, can be better play the chucking effect to the filler.

In a second aspect, an embodiment of the present application provides an electronic device, including: an apparatus body; a battery holder disposed within the device body; a battery as in the first aspect and any one implementation of the first aspect mounted within the device body by the battery fixture.

In the embodiment of the application, the battery is installed in the electronic equipment, the air tightness of the battery is good, the safety is high, the service life of the battery is long, and the stability and the safety of the electronic equipment can be further improved.

As a possible implementation, the battery is a rechargeable battery; the equipment body is provided with a charging port, and the charging port is connected with the battery.

In the embodiment of the application, the battery can also be a rechargeable battery, so that the battery can be charged, the battery can continuously and stably supply power to the electronic equipment, and the stability of the electronic equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a flowchart of a method for packaging a battery according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a first embodiment of a battery provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a second embodiment of a battery provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a third embodiment of a battery provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Icon: 20-a battery; 21-a metal housing; 210-a groove; 22-an electrode; 220-bump; 23-a filler; 30-an electronic device; 31-the apparatus body; 32-battery fixation means.

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.

In order to more clearly describe the implementation of the battery in the examples of the present application, a method for packaging the battery is described first, and then a battery packaged according to the method for packaging the battery is described. The packaging method of the battery can be applied to packaging of various batteries, such as lithium batteries, dry batteries, fuel batteries and the like. In addition, the packaging in the embodiment of the application is to seal the metal shell and the electrode of the battery, and the battery after being sealed can be used. Therefore, the battery of the embodiment of the present application may be a lithium battery, a dry battery, a fuel cell, or other various battery types.

Referring to fig. 1, a flowchart of a method for packaging a battery according to an embodiment of the present disclosure is shown, where the method includes:

step 101: providing a battery to be packaged; the battery to be packaged includes a metal case and an electrode disposed within the metal case with a gap between an inner wall of the metal case and the electrode.

Step 102: and filling a first filler and a second filler in the gap so that the gap is filled with the first filler and the second filler, and the inner wall and the electrode are separated by the first filler and the second filler. Wherein one of the first filler and the second filler is ceramic, and the other is glass.

In the embodiment of the application, the gap between the metal shell and the electrode is filled by using glass and ceramic as fillers, and compared with the prior art, the combination of the glass and the metal can ensure the air tightness of the battery; the ceramic improves the torsion and the impact strength, and can also protect the battery from being fully insulated when the battery is subjected to high temperature. Therefore, the battery is packaged by the packaging method, so that the insulativity of the battery under the high-temperature condition can be ensured, the service life of the battery is prolonged, the safety of the battery is ensured, the battery can be applied to devices or equipment with torque requirements, and the applicability and the practicability of the battery are improved.

Next, a detailed embodiment of step 101 and step 102 will be described.

In step 101, a battery to be packaged includes a metal case and an electrode disposed within the metal case, and for the electrode, two electrode terminals are generally included, and the two electrode terminals are generally metal terminals. When not encapsulated, there is a gap between the electrode and the inner wall of the metal housing.

The electrodes and the metal casing are generally cylindrical, and the metal casing may be open at both ends or open at one end and closed at the other end. When the electrode, which is cylindrical with the metal shell but has a smaller bottom area than the metal shell, is disposed inside the metal shell, the gap formed between the two may be an annular gap (i.e., the two ends are open) or a U-shaped gap (i.e., one end is open and the other end is closed, and there is a distance between the closed end and the end corresponding to the electrode).

Further, after the battery to be packaged is provided in step 101, in step 102, a first filler and a second filler are filled in the gap so that the gap is filled with the first filler and the second filler, the inner wall of the metal case and the electrode are spaced apart by the first filler and the second filler, and one of the first filler and the second filler is ceramic.

In the case where the gap is filled with the first filler and the second filler, it can be understood that, for example, if the gap is originally an annular gap, the first filler and the second filler are filled in the annular gap, and if the two ends of the metal shell and the two ends of the electrode are on the same horizontal plane after the filling, and the lower end of the metal shell is closed, and the metal shell and the electrode are not in contact with each other at the closed end, it can be understood that the first filler and the second filler are filled between the metal shell and the electrode until the upper end between the metal shell and the electrode is filled up, which represents a state of filling the gap.

For the filling method adopted in step 102, different embodiments may be adopted based on the different filling orders of the two fillers and the different gap shapes.

When the gap is an annular gap, step 102 may include: the first filler and the second filler are alternately filled in an axial direction, a radial direction, or a circumferential direction of the annular gap.

In this embodiment, the annular gap has three orthogonal directions, the axial direction being the direction of the axis of the annulus, e.g. from bottom to top and from top to bottom, alternately filling along the central axis of the annulus. If both ends of the metal shell are provided with openings, the metal shell can be alternately filled from the upper end to the lower end when being filled; alternatively, the filling can be performed from the lower end to the upper end in an alternating manner. If one end of the metal shell is open, the metal shell is filled from the closed end to the open end. The radial direction is the direction of the annular radius, and when filling, the electrode can be alternately filled to one side of the inner wall of the metal shell from the annular gap at one side of the electrode; alternatively, the annular gap can be filled to one side of the electrode on one side of the inner wall of the metal shell; i.e. the radial direction may be towards the inner wall of the metal housing or towards the electrode. The circumferential direction is the direction of the ring-shaped circumference, such as the clockwise mode of the circumference or the anticlockwise mode of the circumference.

Further, when alternately filling, the alternating mode adopted can be various, for example, the filling is performed layer by layer, that is, after a layer of first filler is filled, a layer of second filler is filled; or alternatively two layers, i.e. after filling two layers of the first filler, two layers of the second filler are filled. Different filling modes with alternating layers can also be adopted, for example, after one layer of the first filler is filled, three layers of the second filler are filled. In the embodiment of the present application, for example only, in practical applications, the ratio of the first filler to the second filler filled in the gap may be appropriately adjusted according to the requirements of the actual battery package, such as: if the requirements for torsion and impact strength are high in the packaging requirements of the battery, the number of layers of the ceramic can be more than that of the glass, and correspondingly, the ceramic can be filled with one layer of glass and three layers of ceramic for alternate filling.

In the embodiment of the application, when the gap is an annular gap, two fillers can be alternately filled along the axial direction, the radial direction or the circumferential direction of the annular gap, so that the gap can be fully filled with the two fillers.

When the gap is a U-shaped gap, the U-shaped gap also has a bottom curved gap to be filled, unlike the annular gap. Then, at this time, the curved gap at the bottom may be filled with the first filler or the second filler, for example, with glass, and then the remaining annular gap may be filled in the same manner as the annular gap.

Further, in addition to the alternating filling, the filling may be performed by a layered filling method, in which case, step 102 includes: filling a first filler in the gap so that the gap is partially filled and the gap is remained; and filling a second filler in the partial gap so that the partial gap is completely filled.

In this embodiment, hierarchical filling may be understood, segmented filling may be understood, or partial filling may be understood, such as: the annular gap is directly divided into two parts, wherein one part is completely filled with the first filler, and the other part is completely filled with the second filler. It should be noted that, in this embodiment, when filling the filler corresponding to each portion, since one layer of the filler may not meet the corresponding filling requirement, when filling the same filler, if the annular gap, the same filler may be filled repeatedly in the axial direction, the radial direction, or the circumferential direction until the filling of the filler of the portion is completed.

In the embodiment of the application, a filling mode that one filler is used for filling a part of gaps first and then the other filler is used for filling the rest gaps can be adopted, so that the two fillers can be ensured to fully fill the gaps.

In this embodiment, the glass may be filled first and the ceramic may be filled again, i.e. the first filler is glass and the second filler is ceramic. When such an embodiment is adopted, assuming that both ends of the metal shell are open, the filling can be performed from top to bottom from the upper end to the lower end; it is also possible to fill from the bottom to the top, starting from the lower end, to the upper end, so that the glass filled first can be located above or below the ceramic. Assuming that one end of the metal can is open (typically the upper end is open), then filling is from the closed end of the metal can (typically the lower end is closed) to the open end, with the corresponding glass first filled being located below the ceramic. This embodiment is relatively suitable for the case where the metal casing is open at one end, i.e. the glass is located below the ceramic.

In the embodiment of the application, the glass can be arranged at the lower part, and the ceramic can be arranged at the upper part, so that the two fillers can fully play respective roles. It will be appreciated that since the ceramic serves to increase the torsional and compressive strength, while the open end (of the metal casing) of the cell is typically subjected to higher compressive forces, filling the open end with ceramic will better ensure the torsional and compressive strength of the cell, thereby increasing the life of the cell.

Except that being divided into two parts or two-layer, when the metal casing both ends were the condition of open end, can also adopt the middle part in the clearance between the inner wall of metal casing and the electrode to adopt glass to fill, then both ends in clearance adopt pottery to fill, and then guarantee the torsion and the compressive capacity of battery, improve the life-span of battery.

In the various filling manners described in the foregoing embodiments, there is no limitation on the shape or size of the filler as long as the filler is filled into the gap in the corresponding filling manner, and the final result is that the gap is filled up so that the filler acts as a spacer between the metal shell and the electrode. As another embodiment, the shape of the first filler and the second filler may also match the shape of the gap, in which case step 102 includes: laying a first filler and a second filler within the gap. In this embodiment, the shape corresponding to the first and second fillers is designed to match the shape of the gap, for example when the gap is annular, the shape of both fillers is also annular; when the gap is U-shaped, the shape of the two fillers includes a ring-shaped filler and the same curved shape as the bottom curved gap of the U-shape. Furthermore, during filling, the filling material can be directly paved into the gap by adopting a paving mode. In addition, the manner of laying at this time is similar to the filling manner in the previous embodiment, and an alternate laying and partial laying manner may be adopted, and the description is not repeated here.

In this application embodiment, can adopt the filler with the shape matching of clearance, then when filling two kinds of fillers, can directly carry out laying type with two kinds of fillers and fill, improve the efficiency of filling.

In the embodiment of the present application, before performing step 102 (i.e., performing the filling), as an optional implementation, the method further includes: a clamping member for clamping the first filling material and the second filling material is arranged on the inner wall and/or the electrode.

In such embodiments, the retainer may take on different configurations, including: a clamping piece is arranged on the inner wall of the metal shell; arranging a clamping piece on the electrode; the inner wall of the metal shell and the electrode are both provided with clamping pieces. For the clamping member, there may be a recess or a projection provided on the inner wall of the metal shell or the electrode. Further, the setting process of the retainer may include: a bulge or a groove is arranged on the inner wall of the metal shell; or a projection or a groove is arranged on the electrode; or grooves are arranged on the inner wall of the metal shell and the electrode; or a groove is arranged on the inner wall of the metal shell, and a bulge is arranged on the electrode; or the inner wall of the metal shell is provided with a bulge, and the electrode is provided with a groove.

Wherein, when the inner wall of the metal shell is provided with a groove, the electrode is provided with a bulge; or a protrusion is arranged on the inner wall of the metal shell, and when a groove is arranged on the electrode, the protrusion and the groove can be corresponding. And in this case, in step 102, the first filler and the second filler fill the provided groove while filling the first filler and the second filler into the gap. When the recess was filled up to the filler, the recess had played a chucking effect, also played a chucking effect to this part of filler simultaneously with the arch that the recess corresponds, produced dual chucking effect promptly, and the chucking effect is better.

Of course, when other arrangements are adopted, if the grooves are provided, the filling material is required to fill the grooves.

In the embodiment of the application, the clamping piece can be arranged on the inner wall and/or the electrode, so that the filler can be fully filled in the gap, and the air tightness of the package is improved. And the groove and the bulge with corresponding relations are respectively used as clamping pieces, so that the clamping effect on the filler can be better played.

Further, the number of the grooves and/or the protrusions arranged on the inner wall and/or the electrode is also not limited, and the grooves and/or the protrusions can be arranged according to the actual size of the gap, for example, the number is more when the gap is larger; the gap is smaller and the number is set smaller.

In an embodiment of the present application, after step 102, the method further includes: the first filler and/or the second filler are sintered.

Sintering, which means to convert the powdery material into a compact, is a traditional process. Generally, after the powder is shaped, the dense body obtained by sintering is a polycrystalline material whose microstructure is composed of crystals, vitreous bodies and pores. The sintering process directly affects the grain size, pore size and grain boundary shape and distribution in the microstructure, thereby affecting the performance of the material. Therefore, after the filler is sintered, the filler can play a role in fixing and enhancing the performance of the material.

It should be noted that, during sintering, different sintering processes may be adopted, such as high-pressure sintering, high-temperature sintering, etc., but during sintering, only the filler therein may be sintered, and during sintering, the ceramic or glass may also be fused or combined with the metal terminal of the metal housing or the electrode, so that the filler and the battery to be packaged can be well combined and fixed.

Different sintering modes can be adopted based on different filling modes of the filler. Based on the thermal conductivity principle of sintering, the filler in the gap can be sintered only by filling the filler on the end face of the gap during sintering. Therefore, assuming that both ends of the metal shell are open, the fillers at both ends need to be sintered; assuming that one end of the metal shell is open and the other end is closed, only the filler at the open end needs to be sintered.

Since the terminal of the electrode is made of metal, in order to achieve sufficient bonding between the filler and the metal, as an alternative embodiment, only the glass is sintered during sintering. This embodiment is suitable for the case where glass is filled into both ends or one end between the inner wall of the metal case and the electrode.

In the embodiment of the application, the two fillers can be sintered, and the strength, the torsion, the air tightness and the like after sintering can be greatly improved no matter the fillers are glass or ceramic, so that the performance of the packaged battery can be improved. And only glass can be sintered, so that the bonding strength of the glass and metal is greatly improved, and the air tightness and safety of the packaged battery are ensured.

Based on the same inventive concept, referring to fig. 2, the present application further provides a battery 20 obtained by packaging the battery according to the packaging method in the foregoing embodiment, where the battery 20 includes a metal casing 21, an electrode 22, and a filler 23.

Wherein, the electrode 22 is arranged in the metal shell 21, and a gap is formed between the electrode 22 and the metal shell 21; a filler 23 filled in the gap and sealing the metal case 21 and the electrode 22; the filler includes ceramic and glass.

In the embodiment of the present application, in contrast to the prior art, the electrode 22 and the metal case 21 of the battery 20 are filled with ceramic and glass therebetween. The combination of glass and metal can ensure the air tightness of the battery; the ceramic improves the torsion and the impact strength, and can also protect the battery from being fully insulated when the battery is subjected to high temperature. Therefore, the battery 20 has insulation property at high temperature, the battery 20 has long service life and safety, and the battery 20 can be applied to devices or equipment with torque requirements, and the applicability and practicability of the battery are high.

Based on the description of the packaging method in the foregoing embodiments, various possible embodiments of the battery 20 are described next.

In the foregoing embodiment, it is described that the filling may be performed in an alternate filling manner, and thus, as an alternative embodiment, the ceramic and the glass are alternately disposed between the inner wall of the metal housing 21 and the electrode 22.

In the embodiment of the present application, two kinds of fillers 23 may be alternately disposed between the inner wall of the metal case 21 and the electrode 22 to ensure that the fillers 23 serve to improve the safety and the gas tightness of the battery.

As an alternative embodiment, when the gap is an annular gap, the ceramic and glass are alternately disposed radially, axially, or circumferentially along the annular gap between the inner wall of the metal housing 21 and the electrode 22.

In the embodiment of the present application, the annular gaps may be alternately arranged in different directions along the annular gaps, so as to ensure that the filler 23 plays a role in improving the safety and the air tightness of the battery.

As an alternative embodiment, when both fillers are filled in layers or in portions, the ceramic is located above the glass in the gap between the inner wall of the metal housing 21 and the electrode 22. For ease of understanding, reference may be made to fig. 3, which is an exemplary illustration in this case.

In the present embodiment, the ceramic may be disposed above the glass, so that the two fillers 23 can sufficiently exert their respective functions.

In such embodiments, the glass may have a thickness greater than the thickness of the ceramic, among others. When the thickness of the glass is larger, the air tightness of the battery can be greatly improved, and the safety of the battery is ensured.

Of course, it is also possible that the thickness of the ceramic may be greater than the thickness of the glass. When the thickness of the ceramic is larger, the torsion and the pressure resistance of the battery can be improved, and the service life of the battery is prolonged.

In the foregoing embodiment, it is mentioned that the filler 23 may be sintered, and thus, the filler 23 in the battery 20 may be a filler subjected to a sintering process.

In the embodiment of the present application, the filler 23 is sintered, so that the strength, the gas tightness, and the like after sintering are greatly improved, thereby improving the performance of the battery 20.

As an alternative embodiment, the inner wall of the metal casing 21 and/or the electrode 22 is provided with a clamping member for clamping the filling 23.

In the embodiment of the present application, a clamping member may be further provided to clamp the filler 23, so that the filler 23 can be sufficiently filled in the gap, and the air tightness of the battery 20 is improved.

Further, in this embodiment, referring to fig. 4, on the inner wall of the metal shell 21, a groove 210 may be provided, and on the electrode 22, a protrusion 220 corresponding to the groove 210 is provided, and the groove 210 and the protrusion 220 are used for clamping the filler 23.

In the embodiment of the present application, the groove 210 and the protrusion 220 serve as a fastening member, thereby better fastening the packing 23.

Based on the same inventive concept, referring to fig. 5, an embodiment of the present application further provides an electronic device 30, which includes a device body 31, a battery fixing device 32 disposed in the device body 31, and a battery 20 mounted in the device body 31 through the battery fixing device 32.

In the embodiment of the present application, the electronic device 30 is provided with the battery 20, so that the battery 20 has good air tightness, high safety and long service life, and the stability and safety of the electronic device 30 can be further improved.

The number of the batteries 20 mounted in the device body 31 may be one or more (for example, in the form of a battery pack), and is not limited herein.

As an alternative embodiment, the battery 20 may be a rechargeable battery; the device body 31 is provided with a charging port, which is connected to the battery 20. The electronic device 30 can be inserted into the charging port by using a corresponding charging wire to charge the battery 20.

In the embodiment of the present application, the battery 20 may also be a rechargeable battery, and therefore, the battery 20 may be recharged, so that the battery 20 can continuously and stably supply power to the electronic device 30, thereby improving the stability of the electronic device 30.

Of course, a wireless charging module may be provided in the electronic device 30, and the battery 20 may be wirelessly charged by a wireless charger without depending on a charging port.

The electronic device 30 may be: various commonly used electronic devices 30 such as a mobile phone, a computer, a tablet, and the like.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, comprising:

a metal housing;

an electrode disposed within the metal housing, a gap being formed between the electrode and the metal housing;

the filler is filled in the gap and seals the metal shell and the electrode; the filler includes ceramic and glass.

2. The cell defined in claim 1, wherein the ceramic and the glass alternate between the inner wall of the metal can and the electrode.

3. The cell defined in claim 2, wherein the gap is an annular gap, and the ceramic and the glass are alternately disposed radially, axially, or circumferentially along the annular gap between the inner wall of the metal can and the electrode.

4. The cell defined in claim 1, wherein the ceramic is located above the glass in a gap between the inner wall of the metal can and the electrode.

5. The battery of claim 4, wherein the glass has a thickness greater than a thickness of the ceramic.

6. The battery according to claim 4, wherein the filler is a filler subjected to a sintering process.

7. The battery according to claim 1, wherein a chucking member for chucking the filler is provided on an inner wall of the metal case and/or the electrode.

8. The battery of claim 7, wherein the metal shell has a groove on its inner wall, and the electrode has a protrusion corresponding to the groove, and the groove and the protrusion are used for clamping the filler.

9. An electronic device, comprising:

an apparatus body;

a battery holder disposed within the device body;

a battery as claimed in any one of claims 1 to 8 mounted within the device body by the battery retaining means.

10. The electronic device of claim 9, wherein the battery is a rechargeable battery; the equipment body is provided with a charging port, and the charging port is connected with the battery.