Battery packaging method and battery

Abstract

The present application provides a battery packaging method and battery. The battery packaging method includes: providing a battery to be packaged; the battery to be packaged includes a metal casing and an electrode disposed within the metal casing, with a gap between the inner wall of the metal casing and the electrode; filling the gap with a first filler and a second filler, such that the gap is completely filled by 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. This method is used to ensure battery safety and increase battery life.

Description

Technical Field

[0001] The present application relates to the field of device processing technology, and in particular to a battery packaging method and a battery. Background Art

[0002] The metal casing and electrode seals of traditional lithium batteries are polymers, the metal casing and electrodes of fuel cells are glass-metal sealed, and other packaging devices are glass-metal sealed.

[0003] Polymers are organic materials that age easily over time or after being heated. The bonding strength between polymers and electrode metals is low, causing battery leakage, reducing battery life, and failing to better ensure safety. Over time, the polymer electrode terminals allow moisture in the air to penetrate into the battery from the junction between the metal parts and the polymer, and the water reacts with the lithium salts inside the battery, reducing battery performance. At the same time, it is also highly corrosive to the battery as a whole, posing a safety hazard.

[0004] It can be seen that the existing battery packaging method cannot guarantee the safety of the battery and the battery life is also short. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a battery packaging method and a battery to ensure the safety of the battery and increase the life of the battery.

[0006] In a first aspect, an embodiment of the present application provides a battery packaging method, comprising: providing a battery to be packaged; the battery to be packaged comprises a metal shell and an electrode arranged in the metal shell, and a gap is formed between an inner wall of the metal shell and the electrode; filling the gap with a first filler and a second filler, 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.

[0007] In the embodiments of this application, glass and ceramic are used as fillers to fill the gap between the metal casing and the electrodes. Compared to existing technologies, the combination of glass and metal ensures the battery's airtightness; ceramic improves torsional and impact strength, and also protects the battery from high-temperature insulation. Therefore, encapsulating the battery using this packaging method can ensure the battery's insulation under high-temperature conditions, extend battery life, ensure battery safety, and enable the battery to be used in devices or equipment with torsional requirements, improving the battery's applicability and practicality.

[0008] As a possible implementation manner, the gap is an annular gap, and filling the gap with the first filler and the second filler includes: alternately filling the first filler and the second filler along the axial, radial or circumferential direction of the annular gap.

[0009] In the embodiment of the present application, when the gap is an annular gap, two fillers can be alternately filled along the axial, radial or circumferential direction of the annular gap to ensure that the two fillers can fully fill the gap.

[0010] As a possible implementation method, filling the first filler and the second filler in the gap includes: filling the first filler in the gap so that the gap is partially filled and the remaining gap is partial; filling the second filler in the partial gap so that the partial gap is completely filled.

[0011] In the embodiment of the present application, a filling method can also be adopted in which a part of the gap is first filled with one filler and then the remaining gap is filled with another filler to ensure that the two fillers can fully fill the gap.

[0012] As a possible implementation manner, the first filler is glass, and the second filler is ceramic.

[0013] In the embodiment of the present application, glass can be at the bottom and ceramic can be at the top, so that the two fillers can fully play their respective roles.

[0014] As a possible implementation manner, before filling the gap with the first filler and the second filler, the method further includes: providing a clamping member on the inner wall and / or the electrode for clamping the first filler and the second filler.

[0015] In the embodiment of the present application, a clamping member may be further provided on the inner wall and / or the electrode so that the filler can be fully filled in the gap, thereby improving the airtightness of the package.

[0016] As a possible implementation method, the clamping piece for clamping the first filler and the second filler is provided on the inner wall and / or the electrode, including: a groove is opened on the inner wall, and a protrusion corresponding to the groove is provided on the electrode; correspondingly, filling the first filler and the second filler in the gap includes: when the first filler and the second filler are filled into the gap, the first filler and the second filler fill the groove.

[0017] In the embodiment of the present application, the grooves and protrusions are used as clamping members, which can better clamp the filler.

[0018] As a possible implementation manner, the shapes of the first filler and the second filler match the shape of the gap, and filling the first filler and the second filler in the gap includes: laying the first filler and the second filler in the gap.

[0019] In the embodiment of the present application, a filler that matches the shape of the gap can be used. Then, when filling with two fillers, the two fillers can be directly laid out to improve the filling efficiency.

[0020] As a possible implementation manner, after filling the gap with the first filler and the second filler, the method further includes: sintering the first filler and / or the second filler.

[0021] In the embodiment of the present application, the two fillers can also be sintered. Regardless of whether it is glass or ceramic, the strength, torsional force, and airtightness after sintering will be greatly improved, thereby improving the performance of the packaged battery.

[0022] As a possible implementation manner, sintering the first filler and / or the second filler includes: sintering the glass in the first filler and the second filler.

[0023] In the embodiment of the present application, only the glass may be sintered, so that the strength of the bond between the glass and the metal is greatly improved, thereby ensuring the airtightness and safety of the packaged battery.

[0024] In a second aspect, an embodiment of the present application provides a battery, which is a battery packaged according to the packaging method described in the first aspect and any one of the implementations of the first aspect.

[0025] In the embodiment of the present application, the battery obtained by packaging the battery using the aforementioned packaging method has high air tightness, a long battery life, and guaranteed safety. At the same time, it has strong applicability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A flowchart of a battery packaging method provided in an embodiment of the present application;

[0028] Figure 2A schematic structural diagram of a first embodiment of a battery provided in an embodiment of the present application;

[0029] Figure 3 A schematic structural diagram of a second embodiment of a battery provided in an embodiment of the present application;

[0030] Figure 4 A schematic structural diagram of a third embodiment of a battery provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0032] Icon: 20-battery; 21-metal shell; 210-groove; 22-electrode; 220-protrusion; 23-filler; 30-electronic device; 31-device body; 32-battery fixing device. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0034] The battery packaging method provided in the embodiments of the present application can be applied to the packaging of various types of batteries, such as lithium batteries, dry cells, fuel cells, etc. Furthermore, the packaging referred to in the embodiments of the present application refers to the sealing of the metal casing and electrodes of the battery, and only after the sealing is completed can the battery be used.

[0035] Please refer to the following Figure 1 , is a flow chart of a battery packaging method provided in an embodiment of the present application, the packaging method comprising:

[0036] Step 101: providing a battery to be packaged; the battery to be packaged includes a metal shell and electrodes arranged in the metal shell, with a gap between the inner wall of the metal shell and the electrodes.

[0037] Step 102: Fill the gap with a first filler and a second filler, so that the gap is completely 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.

[0038] In the embodiments of this application, glass and ceramic are used as fillers to fill the gap between the metal casing and the electrodes. Compared to existing technologies, the combination of glass and metal ensures the battery's airtightness; ceramic improves torsional and impact strength, and also protects the battery from high-temperature insulation. Therefore, encapsulating the battery using this packaging method can ensure the battery's insulation under high-temperature conditions, extend battery life, ensure battery safety, and enable the battery to be used in devices or equipment with torque requirements, improving the battery's applicability and practicality.

[0039] Next, the detailed implementation of step 101 and step 102 is introduced.

[0040] In step 101, the battery to be packaged includes a metal casing and electrodes disposed within the metal casing. The electrodes typically include two electrode terminals, which are generally metal terminals. When not packaged, there is a gap between the electrodes and the inner wall of the metal casing.

[0041] The electrode and metal shell are typically cylindrical in shape, and the metal shell can be open at both ends or open at one end and closed at the other. When an electrode, which is also cylindrical but has a smaller base area than the metal shell, is positioned within the metal shell, the gap formed between the two can be an annular gap (i.e., open at both ends) or a U-shaped gap (i.e., open at one end and closed at the other, with a distance between the closed end and the corresponding end of the electrode).

[0042] Furthermore, after providing the battery to be packaged 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 shell and the electrode are separated by the first filler and the second filler, and one of the first filler and the second filler is ceramic.

[0043] Among them, regarding the gap being filled with the first filler and the second filler, it can be understood that, for example, if it was originally an annular gap, then after filling, the annular gap is filled with the first filler and the second filler. Assuming that the two ends of the metal shell and the two ends of the electrode are on the same horizontal plane, and the lower end of the metal shell is closed, and the metal shell and the electrode are not in contact on the closed end, then 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, which represents the state of filling the gap.

[0044] When performing step 102 , the filling method adopted may be implemented in different ways based on the filling order of the two fillers and the different gap shapes.

[0045] When the gap is an annular gap, step 102 may include: alternately filling the annular gap with a first filler and a second filler along the axial direction, radial direction, or circumferential direction.

[0046] In this embodiment, the annular gap has three orthogonal directions. The axial direction is the direction of the axis of the ring, such as filling alternately from bottom to top and from top to bottom along the center axis of the ring. Assuming that both ends of the metal shell are open, when filling, you can start from the upper end and fill alternately from top to bottom until it is filled to the lower end; you can also start from the lower end and fill alternately from bottom to top until it is filled to the upper end. Assuming that one end of the metal shell is open, when filling, you can fill from the closed end of the metal shell to the open end. The radial direction is the direction of the radius of the ring. When filling, you can alternately fill from the annular gap on one side of the electrode to the side of the inner wall of the metal shell; you can also alternately fill from the annular gap on one side of the inner wall of the metal shell to the side of the electrode; that is, the radial direction can be towards the inner wall of the metal shell or towards the electrode. The circumferential direction is the direction of the circumference of the ring, such as filling alternately in a clockwise manner along the circumference or filling alternately in a counterclockwise direction.

[0047] Furthermore, when filling alternately, there may be multiple alternating methods, such as alternating layer by layer, that is, filling a layer of the first filler and then a layer of the second filler; or alternating two layers by two layers, that is, filling two layers of the first filler and then two layers of the second filler. It is also possible to use a filling method with different numbers of layers alternating, such as filling one layer of the first filler and then three layers of the second filler. In the embodiments of the present application, for example, in actual applications, the ratio of the first filler to the second filler filled in the gap can be appropriately adjusted according to the actual battery packaging requirements. For example, assuming that the battery packaging requirements have high requirements for torsion and impact strength, then the number of ceramic layers can be more than that of glass. Correspondingly, one layer of glass can be filled, and then three layers of ceramic can be filled to perform alternating filling.

[0048] In the embodiment of the present application, when the gap is an annular gap, two fillers can be alternately filled along the axial, radial or circumferential direction of the annular gap to ensure that the two fillers can fully fill the gap.

[0049] When the gap is U-shaped, unlike an annular gap, it also has a curved gap at the bottom that needs to be filled. In this case, the curved gap at the bottom can be filled with the first filler or the second filler, such as glass, first, and then the remaining annular gap can be filled in the same way as the annular gap.

[0050] Furthermore, in addition to the alternating filling method, whether it is an annular gap or a U-shaped gap, a layered filling method can also be used for filling. In this case, step 102 includes: filling the first filler in the gap so that the gap is partially filled and the remaining gap is left; filling the second filler in part of the gap so that the part of the gap is completely filled.

[0051] In this embodiment, it can be understood as layered filling, segmented filling, or partial filling. For example, the annular gap is directly divided into two parts, one of which is completely filled with the first filler, and the other is completely filled with the second filler. It should be noted that in this embodiment, when filling the corresponding filler of each part, since one layer of filler may not meet the corresponding filling requirements, when filling the annular gap with the same filler, the same filler can be repeatedly filled in the axial, radial, or circumferential direction until the filler of the part is completely filled.

[0052] In the embodiment of the present application, a filling method can also be adopted in which a part of the gap is first filled with one filler and then the remaining gap is filled with another filler to ensure that the two fillers can fully fill the gap.

[0053] In this embodiment, glass can be filled first and then ceramic, that is, the first filler is glass and the second filler is ceramic. When this embodiment is adopted, assuming that both ends of the metal shell are open, then when filling, since it can be filled from the upper end to the bottom until it is filled to the lower end; it can also be filled from the lower end to the top until it is filled to the upper end, the glass filled first can be located above or below the ceramic. Assuming that one end of the metal shell is open (usually the upper end is open), then when filling, fill from the closed end of the metal shell (usually the lower end is closed) to the open end, and correspondingly, the glass filled first is located below the ceramic. Relatively speaking, this embodiment is more suitable for the case where one end of the metal shell is open, that is, the glass is located below the ceramic.

[0054] In the embodiment of the present application, glass can be placed at the bottom and ceramic can be placed at the top, allowing the two fillers to fully utilize their respective functions. It is understandable that since the ceramics play a role in increasing torsional and compressive strength, and the open end of the battery (the metal casing) is usually subjected to greater pressure, filling the open end with ceramics can better ensure the battery's torsional and compressive strength, thereby extending the battery life.

[0055] In addition to being divided into two parts or two layers, when both ends of the metal shell are open, the middle part of the gap between the inner wall of the metal shell and the electrode can be filled with glass, and then the two ends of the gap can be filled with ceramics, thereby ensuring the battery's torque and pressure resistance and improving the battery life.

[0056] The various filling methods described in the preceding embodiments do not restrict the shape or size of the filler. As long as the filler is placed into the gap according to the corresponding filling method, and the gap is ultimately filled, the filler serving as a spacer between the metal housing and the electrode, the gap is sufficient. Alternatively, the shapes of the first and second fillers can also match the shape of the gap. In this case, step 102 includes laying the first and second fillers within the gap. In this embodiment, the shapes of the first and second fillers are designed to match the shape of the gap. For example, if the gap is annular, the shapes of both fillers are also annular; if the gap is U-shaped, the shapes of both fillers include an annular filler and a curved shape that matches the bottom curve of the U-shaped gap. Furthermore, during filling, the filler can be directly laid into the gap. Furthermore, the laying method in this case is similar to that of the filling method in the preceding embodiments, and can also be applied in alternating or segmented ways. This description will not be repeated here.

[0057] In the embodiment of the present application, a filler that matches the shape of the gap can be used. Then, when filling with two fillers, the two fillers can be directly laid out to improve the filling efficiency.

[0058] In an embodiment of the present application, before executing step 102 (ie, filling), as an optional implementation, the method further includes: providing a clamping member for clamping the first filler and the second filler on the inner wall and / or the electrode.

[0059] In this embodiment, the clamping member can be provided in various ways, including: providing the clamping member on the inner wall of the metal shell; providing the clamping member on the electrode; providing the clamping member on both the inner wall of the metal shell and the electrode. The clamping member can be a groove or a protrusion provided on the inner wall of the metal shell or the electrode. Furthermore, the process of providing the clamping member can include: providing a protrusion or a groove on the inner wall of the metal shell; providing a protrusion or a groove on the electrode; providing a groove on both the inner wall of the metal shell and the electrode; providing a groove on the inner wall of the metal shell and a protrusion on the electrode; or providing a protrusion on the inner wall of the metal shell and a groove on the electrode.

[0060] In the case of a groove provided on the inner wall of the metal shell and a protrusion provided on the electrode, or in the case of a protrusion provided on the inner wall of the metal shell and a groove provided on the electrode, the protrusion and groove may correspond to each other. In this case, in step 102, when the first filler and the second filler are filled into the gap, the first filler and the second filler completely fill the provided groove. When the filler fills the groove, the groove acts as a clamp, and the protrusion corresponding to the groove also acts as a clamp for the filler, thus creating a dual clamping effect and achieving a better clamping effect.

[0061] Of course, when other arrangements are used, if grooves are provided, the grooves also need to be filled with fillers.

[0062] In the embodiments of the present application, clamping members may be provided on the inner wall and / or the electrodes to allow the filler to be fully filled in the gap, thereby improving the airtightness of the package. Furthermore, by using corresponding grooves and protrusions as clamping members, the filler can be better clamped.

[0063] Furthermore, there is no limit to the number of grooves and / or protrusions provided on the inner wall and / or the electrode, and they can be set according to the actual size of the gap. For example, if the gap is large, the number is large; if the gap is small, the number is small.

[0064] In the embodiment of the present application, after step 102, the method further includes: sintering the first filler and / or the second filler.

[0065] Sintering, the process of converting powdered materials into a dense body, is a traditional process. Generally speaking, the dense body obtained by sintering after forming a powder is a polycrystalline material with a microstructure composed of crystals, glass, and pores. The sintering process directly affects the grain size, pore size, and grain boundary shape and distribution within the microstructure, thereby influencing the material's properties. Therefore, sintering fillers can stabilize and enhance the material's performance.

[0066] It should be noted that different sintering processes can be used during sintering, such as high-pressure sintering, high-temperature sintering, etc., but only the fillers can be sintered during sintering, and during the sintering process, the ceramic or glass will also fuse or combine with the metal shell or the metal terminal of the electrode, so that the filler and the battery to be packaged can be well combined and fixed.

[0067] Different sintering methods can be used based on the filling method of the filler. Due to the principle of heat conductivity during sintering, during sintering, only the filler at the end surface of the gap needs to be filled to achieve the sintering of the filler within the gap. Therefore, if both ends of the metal shell are open, the filler at both ends needs to be sintered; if 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.

[0068] Since the electrode terminals are made of metal, in order to achieve a full bond between the filler and the metal, as an optional embodiment, only the glass inside is sintered during sintering. This embodiment is suitable for filling the glass between the inner wall of the metal shell and the electrode at both ends or one end.

[0069] In the embodiments of the present application, both fillers can be sintered. Regardless of whether the fillers are glass or ceramic, the strength, torsional strength, and airtightness of the sintered filler are significantly improved, thereby enhancing the performance of the packaged battery. Alternatively, only the glass can be sintered to significantly enhance the bond strength between the glass and the metal, ensuring the airtightness and safety of the packaged battery.

[0070] Based on the same invention concept, please refer to Figure 2 In an embodiment of the present application, a battery 20 is provided by packaging a battery according to the packaging method in the aforementioned embodiment. The battery 20 includes a metal shell 21, an electrode 22, and a filler 23.

[0071] The electrode 22 is disposed in the metal shell 21 , and a gap is formed between the electrode 22 and the metal shell 21 ; the filler 23 is filled in the gap and seals the metal shell 21 and the electrode 22 ; the filler includes ceramic and glass.

[0072] In the embodiment of the present application, compared to the prior art, the space between the electrode 22 and the metal casing 21 of the battery 20 is filled with ceramic and glass. The combination of glass and metal ensures the battery's airtightness; the ceramic improves torsional and impact strength, and also provides adequate insulation when exposed to high temperatures. Therefore, the battery 20 is insulated at high temperatures, has a long lifespan, and is safe. Furthermore, the battery 20 can be used in devices or equipment with torque requirements, and its applicability and practicality are also high.

[0073] Based on the introduction of the packaging method in the foregoing embodiment, various possible implementations of the battery 20 are introduced next.

[0074] As described in the above embodiment, an alternating filling method can be adopted during filling. Therefore, as an optional implementation, ceramic and glass are alternately arranged between the inner wall of the metal shell 21 and the electrode 22.

[0075] In the embodiment of the present application, the two fillers 23 can be alternately arranged between the inner wall of the metal shell 21 and the electrode 22 to ensure that the fillers 23 play a role in improving the safety and airtightness of the battery.

[0076] As an optional embodiment, when the gap is an annular gap, the ceramic and the glass are alternately arranged along the annular gap between the inner wall of the metal shell 21 and the electrode 22 in the radial, axial or circumferential direction.

[0077] In the embodiment of the present application, for the annular gap, the fillers 23 can be alternately arranged in different directions along the annular gap to ensure that the fillers 23 play a role in improving the safety and airtightness of the battery.

[0078] As an optional embodiment, when the two fillers are filled in layers or in parts, the ceramic is located above the glass in the gap between the inner wall of the metal shell 21 and the electrode 22. For ease of understanding, please refer to Figure 3 , which is an example diagram for this case.

[0079] In the embodiment of the present application, the ceramic can be placed above the glass so that the two fillers 23 can fully play their respective roles.

[0080] In this embodiment, the thickness of the glass can be greater than that of the ceramic. When the thickness of the glass is greater, the airtightness of the battery can be greatly improved, thereby ensuring the safety of the battery.

[0081] Of course, the thickness of the ceramic can also be greater than that of the glass. When the thickness of the ceramic is greater, the torsion and compression resistance of the battery can be improved, thereby increasing the life of the battery.

[0082] In the aforementioned embodiment, it is mentioned that the filler 23 can be sintered. Therefore, the filler 23 in the battery 20 can be a filler that has been sintered.

[0083] In the embodiment of the present application, the filler 23 is sintered, and the strength and air tightness after sintering are greatly improved, thereby improving the performance of the battery 20.

[0084] As an optional embodiment, a clamping piece for clamping the filler 23 is provided on the inner wall of the metal shell 21 and / or the electrode 22 .

[0085] In the embodiment of the present application, a clamping member may be provided to clamp the filler 23 so that the filler 23 can be fully filled in the gap, thereby improving the airtightness of the battery 20 .

[0086] Further, in this embodiment, please refer to Figure 4A groove 210 may be provided on the inner wall of the metal shell 21 , and a protrusion 220 corresponding to the groove 210 may be provided on the electrode 22 . The groove 210 and the protrusion 220 are used to clamp the filler 23 .

[0087] In the embodiment of the present application, the groove 210 and the protrusion 220 are used as clamping members, which can better clamp the filler 23.

[0088] Based on the same invention concept, please refer to Figure 5 An embodiment of the present application further provides an electronic device 30 , including a device body 31 , a battery fixing device 32 disposed in the device body 31 , and a battery 20 installed in the device body 31 through the battery fixing device 32 .

[0089] In the embodiment of the present application, the aforementioned battery 20 is installed in the electronic device 30 . The battery 20 has good airtightness, high safety and long life, thereby improving the stability and safety of the electronic device 30 .

[0090] The number of batteries 20 installed in the device body 31 can be one or more (for example, in the form of a battery pack), which is not limited here.

[0091] As an optional embodiment, the battery 20 can be a rechargeable battery; a charging port is provided on the device body 31, and the charging port is connected to the battery 20. The electronic device 30 can be charged by plugging a corresponding charging cable into the charging port.

[0092] In the embodiment of the present application, the battery 20 may also be a rechargeable battery, and therefore, may be charged, 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 .

[0093] Of course, a wireless charging module may also be provided in the electronic device 30 , so that the battery 20 may be wirelessly charged using a wireless charger without relying on a charging port.

[0094] The electronic device 30 can be any common electronic device 30 such as a mobile phone, a computer, or a tablet.

[0095] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0096] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0097] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery packaging method, characterized in that: include: Providing batteries to be packaged; The battery to be packaged includes a metal shell and an electrode disposed in the metal shell, with a gap between the inner wall of the metal shell and the electrode; A clamping member for clamping the first filler and the second filler is provided on the inner wall and / or the electrode; Filling the gap with a first filler and a second filler, so that the gap is completely 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; The first filler and / or the second filler at the open end of the metal shell is sintered.

2. The packaging method according to claim 1, wherein: The gap is an annular gap, and the first filler and the second filler are filled in the gap, including: The first filler and the second filler are alternately filled in the annular gap along the axial direction, radial direction or circumferential direction.

3. The packaging method according to claim 1, wherein: Filling the gap with a first filler and a second filler, comprising: filling the first filler in the gap so that the gap is partially filled and the remaining gap remains; The second filler is filled in the partial gap to completely fill the partial gap.

4. The packaging method according to claim 3, wherein: The first filler is glass, and the second filler is ceramic.

5. The packaging method according to claim 1, wherein: The clamping member for clamping the first filler and the second filler is provided on the inner wall and / or the electrode, and comprises: A groove is formed on the inner wall, and a protrusion corresponding to the groove is provided on the electrode; Correspondingly, filling the gap with the first filler and the second filler includes: When the first filler and the second filler are filled into the gap, the first filler and the second filler fill up the groove.

6. The packaging method according to claim 1, wherein: The shapes of the first filler and the second filler match the shape of the gap, and the first filler and the second filler are filled in the gap, comprising: The first filler and the second filler are laid in the gap.

7. The packaging method according to claim 1, wherein: The sintering of the first filler and / or the second filler comprises: The glasses in the first filler and the second filler are sintered.

8. A battery, characterized in that: The battery is a battery packaged according to the packaging method according to any one of claims 1 to 7.

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