Cylindrical battery

Abstract

The utility model discloses a cylindrical battery, and relates to the technical field of batteries. Comprising a cylindrical outer shell and a battery cell module accommodated in the outer shell, the outer shell is cylindrical and is formed by curling a sheet material and closing up two opposite sides, and bending parts are respectively formed at two ends of the outer shell and are suitable for being propped against two ends of the battery cell module; the cylindrical battery provided by the utility model is easy to produce, the automatic production difficulty can be effectively reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] Batteries are the power source for tools. Among them, cylindrical batteries are widely used in various fields because of their standardized dimensions, mature production equipment and processing technology.

[0003] Some cylindrical batteries have integrated PCBs. The traditional production method is to put the battery body into a cylindrical steel shell. For details, please refer to Fig.11 One end of the steel shell is closed, and then an indented structure is formed by sealing the end to achieve a stable connection between the battery body and the steel shell. The PCB is located at the other end of the shrinkage relative to the battery body, and further sealing is also required to ensure its stable connection. In addition, the corresponding logo needs to be encapsulated or silk-screened on the outside of the steel shell.

[0004] As can be seen from the above, during the production process of traditional cylindrical batteries, one end of the outer steel shell is closed. The production of this type of steel shell requires the coordination of several processes from raw materials to product production, and after the battery cell is put into the shell, at least two steps are required to complete the shelling of the battery cell and the shelling of the PCB. The production process is complicated, the production efficiency is low, and it also increases the difficulty of automated processing. Utility Model Content

[0005] The purpose of this application is to provide a cylindrical battery to solve at least one of the above-mentioned technical problems.

[0006] In order to solve the above technical problems, the present application provides a cylindrical battery, comprising a cylindrical outer shell and a battery cell module accommodated in the outer shell;

[0007] The outer shell is cylindrical, formed by curling a sheet material with two opposite sides close together, and a bending portion is formed at both ends of the outer shell and is suitable for abutting against the two ends of the battery module;

[0008] In the above implementation process, in the present scheme, the structure of the outer shell can be understood as a patch that is bent and the two opposite sides are brought close to each other to form a cylindrical structure, and the bending parts formed at both ends of the cylindrical structure can limit the battery module, thereby making the outer shell and the battery module form a stable whole; in the present scheme, the outer shell adopts this structural method. Compared with the traditional single-end closed battery shell, the outer shell provided by the present scheme has a simpler production process. It only needs to curl a patch of appropriate size to form a corresponding cylindrical structure, and the bending action of the bending part at one end can be completed synchronously during the curling process, and then the next step of entering the battery module into the shell can be entered, and finally the other end is bent to form a bending part to limit the battery module to complete the assembly of the battery; effectively simplifying the production process, improving production efficiency, and reducing the difficulty of automated production

[0009] Preferably, a first outer covering layer is provided on the outer peripheral wall of the outer shell;

[0010] Preferably, the first outer covering layer is formed by silk screen printing and / or printing and / or spraying and / or adhesion;

[0011] In the above implementation process, it can be understood that the first outer layer can be understood as a mark on the battery shell, such as the outer packaging of a common battery, on which the basic information of the battery is attached; and the information can be completed by silk screen printing, printing, spraying, and adhesion; such as silk screen printing the product merchant name, product name, etc. on the outer shell, or protecting the outer shell by attaching a plastic film.

[0012] Preferably, a first notch is provided on the side wall of the outer shell;

[0013] In the above implementation process, when the electrical interface of the cylindrical battery is arranged on the side wall, a corresponding first notch needs to be provided on the side wall of the outer shell so that the external plug can be connected to the electrical interface.

[0014] Preferably, the battery cell module comprises a battery cell body, and the battery cell body has positive and negative electrodes;

[0015] In the above implementation process, in some application modes, the battery cell module may only include the battery cell body.

[0016] Preferably, the battery cell module comprises a battery cell body and a PCB assembly electrically connected to the battery cell body, and the PCB assembly is arranged at one end of the battery cell body;

[0017] Preferably, the PCB assembly is provided with a contact spring pin, and the contact spring pin is suitable for abutting against the battery body;

[0018] Preferably, the PCB assembly is provided with a conductive metal sheet, and the conductive metal sheet is suitable for detachably abutting against the battery body;

[0019] Preferably, the PCB assembly is provided with a conductive metal sheet, and the conductive metal sheet is welded to the battery body;

[0020] In the above implementation process, when the battery cell module is put into the shell, the PCB assembly can use a variety of methods to achieve electrical connection with the battery cell body, such as contact pins, nickel sheets or other conductive metal sheets. For example, when contact pins are used, after the battery cell body and the PCB assembly are installed, the contact pins can effectively abut against the battery cell body when the packaging is further completed to achieve connection between the battery cell body and the PCB assembly; the conductive metal sheet can be similarly connected in an active abutment manner similar to that of the contact pin, or can be electrically connected in a fixed manner directly through welding.

[0021] Preferably, the PCB assembly further comprises an electrical interface, which is opened at the end of the battery cell module along the axial direction of the battery cell module or opened at the side wall of the battery cell module along the radial direction of the battery cell module;

[0022] In the case where the first notch is opened on the side wall of the battery module along the radial direction of the battery module, a corresponding first notch is opened on the outer peripheral wall of the outer shell;

[0023] In the above implementation process, in this solution, an electrical interface is further provided to realize battery charging, and the point interface can be provided at the end of the cylindrical battery or at the outer wall of the cylindrical battery; it can be understood that when the electrical interface is provided at the end, the outer wall of the outer shell does not need to have a first gap.

[0024] Compared with the prior art, the beneficial effects of this application are

[0025] (1) Compared with the traditional cylindrical battery shell, the production cost is lower and the production efficiency is higher; the shell in this solution is formed into a cylindrical structure by curling the sheet material, and then single-end sealing is performed, and the curling and single-end sealing are also performed simultaneously, which is highly efficient; then the battery cell module can be directly put into the shell, and finally the other end is sealed; compared with the traditional cylindrical battery shell production process, the outer shell is simpler and the automation difficulty is lower;

[0026] (2) Traditional cylindrical batteries are generally packaged with outer films one by one; in this solution, due to the special structure, the outer shell can be firstly made of sheet materials for screen printing and other operations, and then the single sheet material is cut to form the outer shell, and the outer marking part does not need to be packaged one by one in the subsequent process; it can be understood that flat screen printing and printing are more efficient and less difficult, and the efficiency of batch screen printing in the early stage is significantly improved compared with the traditional single outer film packaging method;

[0027] (3) If a traditional battery has an opening on the side, the method generally adopted is to punch out the battery shell one by one; however, in the present application, due to the particularity of the outer shell structure, it is formed by curling a sheet material. Therefore, when the sheet material is in a flat state, multi-point punching can be performed in a flat state, and fixed-point cutting can be performed after the punching is completed; firstly, compared with the traditional cylindrical battery forming a cylinder and then punching, the flat punching is less difficult and easier to automate; secondly, compared with the traditional cylindrical battery that needs to be punched out one by one, the present application can achieve multi-point punching in a flat state, and the punching efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the present application;

[0030] Figure 2 It is a schematic cross-sectional structure diagram of one embodiment of the present application;

[0031] Figure 3 It is a partial structural schematic diagram of one embodiment of the present application;

[0032] Figure 4 It is a schematic structural diagram of an outer shell of one embodiment of the present application;

[0033] Figure 5 It is a schematic structural diagram of an outer shell of one embodiment of the present application;

[0034] Figure 6 It is a structural schematic diagram of a battery cell module according to one embodiment of the present application;

[0035] Figure 7 It is a partial structural schematic diagram of a battery cell module according to one embodiment of the present application;

[0036] Figure 8 It is a partial structural schematic diagram of a battery cell module according to one embodiment of the present application;

[0037] Fig. 9 It is a partial structural schematic diagram of a battery cell module according to one embodiment of the present application;

[0038] Fig.10 is a flow chart of a preparation method according to one embodiment of the present application;

[0039] Fig.11 This is a schematic diagram of a traditional cylindrical battery structure;

[0040] Among them: 10, outer shell; 11, bending part; 12, first notch; 20, battery cell module; 21, battery cell body; 22, PCB assembly; 221, contact spring pin; 222, conductive metal sheet; 23, support cover; 24, positive terminal; 30, electrical interface; 41, first sheet material; 42, second sheet material; 43, cylinder. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0042] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the description of the present application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In the description of this application, it should be noted that the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0046] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0047] In order to further understand the content, features and effects of the utility model of the present application, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0048] Example

[0049] Some cylindrical batteries have integrated PCBs. The traditional production method is to put the battery body into a cylindrical steel shell. For details, please refer to Fig.11 One end of the steel shell is closed, and then an indented structure is formed by sealing the end to achieve a stable connection between the battery body and the steel shell. The PCB is located at the other end of the shrinkage relative to the battery body, and further sealing is also required to ensure its stable connection. In addition, the corresponding logo needs to be encapsulated or silk-screened on the outside of the steel shell.

[0050] As can be seen from the above, in the production process of traditional cylindrical batteries, one end of the outer steel shell is closed. The production of this type of steel shell requires the cooperation of several processes from raw materials to product production, and after the battery cell is put into the shell, at least two steps are required to complete the shelling of the battery cell and the shelling of the PCB. The production process is complicated and the production efficiency is low, and the difficulty of automated processing is also increased. In order to solve the above technical problems, this embodiment provides the following technical solutions:

[0051] For details, see Figure 1-10 , this embodiment provides a cylindrical battery, including a cylindrical outer shell 10 and a battery cell module 20 accommodated in the outer shell 10;

[0052] Furthermore, the outer shell 10 is cylindrical, formed by curling a sheet material and bringing two opposite sides close together, and a bending portion 11 is formed at both ends of the outer shell 10 and is suitable for abutting against both ends of the battery module 20;

[0053] In the above scheme, the structure of the outer shell 10 can be understood as a patch that is bent and the two opposite sides are brought close to each other to form a cylindrical structure, and the bending portions 11 formed at both ends of the cylindrical structure can limit the battery module 20, thereby making the outer shell 10 and the battery module 20 form a stable whole; in this scheme, the outer shell 10 adopting this structural method is compared with the traditional single-end closed battery outer shell 10. The outer shell 10 provided by this scheme has a simpler production process. It only needs to curl a patch of appropriate size to form a corresponding cylindrical structure, and the bending action of the bending portion 11 at one end can be completed synchronously during the curling process, and then the next step of entering the battery module 20 into the shell can be entered, and finally the other end is bent to form the bending portion 11 to limit the battery module 20 to complete the assembly of the battery; effectively simplifying the production process, improving production efficiency, and reducing the difficulty of automated production.

[0054] For further information, see Figure 1 and Figure 3 ,in Figure 3 The top is not bent. Figure 1 The middle part is the state after the bending portion 11 is formed after the bending; the specific formation principle can be that during the curling and rotating process, a bending member abuts against the side surface, and a ring-shaped bending can be achieved along with the rotating process, and finally Figure 3 The state changes Figure 1 Status in.

[0055] It should be noted that in other embodiments, see Figure 4 , Figure 4 Only one end is formed with a bending portion 11, and the method of forming this state is not limited to the above method, but the side can be bent first in the state of a sheet material and then curled; it can be understood that the formation of the bending portion 11 can be carried out simultaneously with the bending process of the sheet material or separately, and this embodiment does not limit this.

[0056] Specifically, a first outer covering layer (not shown in the figure) is provided on the outer peripheral wall of the outer shell 10; it is understandable that the first outer covering layer can be understood as a mark on the battery shell or a coated plastic film, which can be formed by silk screen printing, printing, etc., or can be formed by a plastic film.

[0057] Further, the first outer covering layer is formed by silk screen printing and / or printing and / or spraying and / or adhesion;

[0058] In the above scheme, the outer packaging of a common battery has basic information of the battery attached thereon; and the information can be completed by silk-screening, printing, spraying, or attachment; for example, the merchant name and product name of the product are silk-screened on the outer shell 10, or the outer shell 10 is protected by attaching a plastic film, etc.; it should be noted that the attachment described above can be understood as an attachment method similar to thermoplastic film packaging, and thermoplastic film packaging is a common packaging technology, so this embodiment will not be further described.

[0059] For details, see Figure 6 In one embodiment, the battery cell module 20 includes a battery cell body 21 and a PCB assembly 22 electrically connected to the battery cell body 21, and the PCB assembly 22 is disposed at one end of the battery cell body 21;

[0060] It is understandable that the battery cell body 21 here has a steel shell, and contains electrolyte and battery cells; its structure belongs to the conventional technology in the prior art, so it will not be further described in this application.

[0061] For further information, see Figure 7-9 The PCB assembly 22 is provided with a conductive member, which includes a contact spring pin 221 or a conductive metal sheet 222; the contact spring pin 221 is suitable for abutting against the battery body 21, and the conductive metal sheet 222 is suitable for being detachably abutted or welded to the battery body 21;

[0062] In the above scheme, when the battery cell module 20 is inserted into the shell, taking the conductive member as the contact spring pin 221 as an example, after the battery cell body 21 and the PCB assembly 22 are installed, the contact spring pin 221 can effectively abut against the battery cell body 21 when the packaging is further completed to achieve the connection between the battery cell body 21 and the PCB assembly 22; the conductive metal sheet 222 is similar, it can adopt a movable abutment method similar to the contact spring pin 221, or it can adopt a fixed connection method directly achieved by welding to achieve electrical connection.

[0063] See also Figure 7 , which is a way of implementing the conductive member as the contact spring pin 221;

[0064] See also Figure 8 , which is a realization method in which the conductive member is a conductive metal sheet 222, in which the conductive metal sheet 222 is detachable and is bent to form a wave structure;

[0065] See also Fig. 9 , which is a way of implementing the conductive member as a conductive metal sheet 222 , in which the conductive metal sheet 222 is fixed to the battery cell body 21 by welding.

[0066] Furthermore, in some embodiments, the conductive metal sheet 222 may be a nickel sheet.

[0067] For further information, see Figure 7-9 In some embodiments, a support cover 23 is provided under the PCB assembly 22; grooves are formed at the upper and lower ends of the support cover 23, one of which can be used to accommodate the top PCB board, and the lower groove can accommodate conductive parts such as contact spring pins 221; in some embodiments, a positive terminal 24 is provided at one end of the PCB board.

[0068] In other embodiments, the battery cell module 20 may only include the battery cell body 21 without integrating the PCB assembly 22 .

[0069] For details, see Figure 3 and Figure 5 The PCB assembly 22 further includes an electrical interface 30, which is opened at the end of the battery module 20 along the axial direction of the battery module 20 or opened at the side wall of the battery module 20 along the radial direction of the battery module;

[0070] Wherein, in the case where the side wall of the battery module 20 is opened along the radial direction of the battery module, the outer peripheral wall of the outer shell 10 is opened with a corresponding first notch 12;

[0071] In the above implementation process, the present solution further provides an electrical interface 30 to realize battery charging, and the electrical interface 30 can be provided at the end of the cylindrical battery or at the outer wall of the cylindrical battery; it is understandable that when the electrical interface 30 is provided at the end, the outer wall of the outer shell 10 does not need to have a first notch 12.

[0072] It is understandable that the electrical interface 30 includes but is not limited to type-e, type-c interface, etc.

[0073] For details, see Fig.10 This embodiment also provides a method for preparing the cylindrical battery, which comprises the following steps:

[0074] S1, cutting the first sheet material 41 into a plurality of second sheet materials 42;

[0075] S2, curling the second sheet material 42 to form a tube, and bending the first end of the tube 43 formed by the second sheet material 42 during the curling process to form the bending portion 11, or

[0076] The side edge of the second sheet material 42 is first bent and then the curling process is performed;

[0077] S3, placing the battery module 20 into the cylinder 43 formed by the second sheet material 42;

[0078] S4, bending and sealing the second end of the cylinder 43 to form a bent portion 11, wherein the first end and the second end are two opposite ends of the cylinder 43;

[0079] In the above scheme, compared with the traditional cylindrical battery, the outer shell 10 provided in this scheme is formed by curling the sheet material. Whether it is the process of cutting the larger first sheet material 41 into the smaller second sheet material 42, or the process of curling to form the cylinder 43, it is easy to realize automated production; in the process of curling the second sheet material 42, the single-end sealing of the cylinder 43 can also be carried out simultaneously. A bending device can be used to abut against the end of the second sheet material 42 during the curling process to make the end achieve a certain bending. The bending process of the second sheet material 42 and the single-end sealing process can be realized synchronously with the rotation during the bending process. Then, the battery module 20 can be directly put into the shell in the next step, which effectively improves the production efficiency compared with the traditional cylindrical battery.

[0080] In some embodiments, the first sheet material 41 and the second sheet material 42 are metal materials, including but not limited to steel shells, iron sheets, etc.

[0081] After the traditional cylindrical battery is sealed in the shell, a layer of plastic film will be coated on the outer shell 10, which is generally done battery by battery, and the efficiency is low. Therefore, this embodiment proposes the following technical solutions:

[0082] For details, see Fig.10 , before step S1, the following steps are also included:

[0083] Screen printing and / or printing and / or spray coating and / or attaching the first sheet material 41 to form a first outer covering layer;

[0084] In the above scheme, the outer shell 10 in this scheme is formed by curling the sheet material, so when it is in the state of a large piece of the first sheet material 41, the first outer covering layer can be formed in one step. For example, by silk-screen printing, the first sheet material 41 is silk-screened as a whole, and then the second sheet material 42 formed after cutting does not need to be processed individually. Compared with traditional cylindrical batteries, this method greatly improves the production and processing efficiency, thereby further reducing the production cost.

[0085] It should be further explained that, taking silk screen printing as an example, the present solution completes silk screen printing when the outer shell 10 product is in the state of the first sheet material 41, and it is completed on a plane; and if traditional cylindrical batteries require silk screen printing, the automation is difficult and the effect is poor; therefore, most traditional cylindrical batteries can only be coated with plastic film, and it is difficult to achieve it by silk screen printing.

[0086] Specifically, when the cylindrical battery needs to open an electrical interface 30 on the side wall, the traditional cylindrical battery will be punched one by one after the battery shell is formed. Not only is the fixation requirement for the outer shell 10 high during the punching process, but the punching is also difficult and inefficient. Therefore, the present application proposes the following technical solutions:

[0087] Specifically, the preparation method also includes the following steps:

[0088] Before step S1, a plurality of first notches 12 are punched out on the first sheet material 41, or

[0089] Between step S2 and step S3, the cylinder 43 is punched to form a first notch 12;

[0090] In the above scheme, when the cylindrical battery needs to open an electrical interface 30 on the side wall, the outer shell 10 also needs to open a corresponding first notch 12. This scheme can adopt the same method as the traditional method of punching a single cylinder 43 to form the first notch 12, or it can adopt the method unique to this method, that is, when the first sheet material 41 is formed, the punching process is completed. Compared with the traditional cylindrical battery method of punching after the cylinder 43 is formed, the outer shell 10 of this scheme is formed by curling the sheet material. Therefore, the first notches 12 in multiple positions can be punched at one time in the state of the sheet material, and there is no need to punch a single cylinder 43 after subsequent curling. It can be understood that in this scheme, compared with the traditional method of punching a single cylinder 43, the punching efficiency is effectively improved, and the punching difficulty is also significantly reduced, thereby effectively reducing the difficulty of automation.

[0091] It is understandable that in this embodiment, the first notch 12 can be punched while the sheet material is in a state, but this embodiment is not limited to this method. It can also be punched after forming the cylinder 43 in the same way as in the traditional method.

[0092] Furthermore, in some other implementations, this embodiment can also be packaged with a plastic film after the battery is sealed, just like a traditional cylindrical battery, and this embodiment is not limited to this.

[0093] In summary, the cylindrical battery machine preparation method provided in this embodiment has lower production cost and higher production efficiency than the traditional cylindrical battery outer shell 10; the outer shell 10 in this solution is formed into a cylindrical structure by curling the sheet material, and then single-end sealing is performed, and the curling and single-end sealing are also performed simultaneously, which is highly efficient; then the battery cell module 20 can be directly put into the shell, and finally the other end is sealed; compared with the traditional cylindrical battery outer shell 10, the production process is simpler and the automation difficulty is lower;

[0094] Secondly, conventional cylindrical batteries are generally packaged with outer films one by one; however, in this solution, batch screen printing and printing operations can be realized in the initial state of the first sheet material 41, and finally a plurality of second sheet materials 42 are formed by cutting, and the outer covering marking part does not need to be packaged one by one in the subsequent process; it is understandable that planar screen printing and printing are more efficient and less difficult, and the efficiency of batch screen printing in the early stage is significantly improved compared with the traditional single outer film packaging method;

[0095] Furthermore, if a traditional battery has an opening on the side, the method generally adopted is to punch out the battery shells one by one; however, in the present application, when the first sheet material 41 is in a state, multi-point punching can be performed in a plane state, and fixed-point cutting can be performed after the punching is completed; firstly, compared with the traditional cylindrical battery that forms a cylinder 43 and then punches, the plane punching is less difficult and easier to automate; secondly, compared with the traditional cylindrical battery that needs to be punched out one by one, the present application can achieve multi-point punching in a plane state, and the punching efficiency is significantly improved.

[0096] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0097] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0098] The above description is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application are within the scope of the technical solution of the present application.

Claims

1. A cylindrical battery, characterized in that: It includes a cylindrical outer shell and a battery core module accommodated in the outer shell; The outer shell is in a cylindrical shape, formed by curling a sheet material with two opposite sides close together, and bending parts are respectively formed at both ends of the outer shell and are suitable for abutting against the two ends of the battery module.

2. The cylindrical battery according to claim 1, characterized in that: A first outer covering layer is disposed on the outer peripheral wall of the housing.

3. The cylindrical battery according to claim 2, characterized in that: The first outer covering layer is formed by silk screen printing and / or printing and / or spraying and / or adhesion.

4. The cylindrical battery according to any one of claims 1 to 3, characterized in that: A first notch is formed on the side wall of the outer shell.

5. The cylindrical battery according to any one of claims 1 to 3, characterized in that: The battery cell module comprises a battery cell body, and the battery cell body has positive and negative electrodes.

6. The cylindrical battery according to any one of claims 1 to 3, characterized in that: The battery cell module includes a battery cell body and a PCB component electrically connected to the battery cell body, and the PCB component is arranged at one end of the battery cell body.

7. The cylindrical battery according to claim 6, characterized in that: The PCB assembly is provided with a contact spring pin, and the contact spring pin is suitable for abutting against the battery core body.

8. The cylindrical battery according to claim 6, characterized in that: The PCB assembly is provided with a conductive metal sheet, and the conductive metal sheet is suitable for detachably abutting against the battery core body.

9. The cylindrical battery according to claim 6, characterized in that: The PCB assembly is provided with a conductive metal sheet, and the conductive metal sheet is welded on the battery core body.

10. The cylindrical battery according to claim 6, characterized in that: The PCB assembly further comprises an electrical interface, which is opened at the end of the battery module along the axial direction of the battery module or opened at the side wall of the battery module along the radial direction of the battery module; In the case where the first notch is opened on the side wall of the battery cell module along the radial direction of the battery cell module, a corresponding first notch is opened on the outer peripheral wall of the outer shell.

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