Battery and electric device

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and an electric device. The battery comprises a shell, a pole group and a fixing frame, the pole group comprises at least two pole group split bodies arranged in the first direction, tabs are arranged on the faces, facing each other, of every two adjacent pole group split bodies respectively, and the fixing frame surrounds the periphery of the pole group so that the tabs of every two adjacent pole group split bodies can abut against each other; the abutting force applied to the pole group by the fixing frame in the first direction is adjustable, and the fixing frame is arranged in the shell. When the pole groups enter the shell, the fixing frame is in contact with the shell, so that the collision between the pole groups and the shell is avoided, the damage of the pole groups is avoided, the pole groups can be firmly fixed, and the effective contact of pole lugs of two adjacent pole groups is ensured; and the length of a single pole group split body can be shortened, so that the condition of bending deformation caused by overlong pole groups is avoided. By applying the battery, the power utilization device has relatively long service life, relatively high safety battery capacity and relatively high voltage.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery and an electrical device. Background Technology

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery technology, in order to improve battery capacity, current batteries are developing towards longer electrode packs. When the electrode packs are made longer, due to their strength issues, they often bend and deform, and the electrode sheets may have defects such as wrinkles, deformation, delamination, and breakage, resulting in a decrease in yield.

[0004] To address the aforementioned technical issues, some batteries have been provided in related technologies. These batteries separate the electrode assembly into multiple series-connected electrode components inside the battery casing. However, separating the electrode assembly into multiple electrode components increases the difficulty of inserting the electrode assembly into the casing. The electrode assembly is prone to collision with the casing during insertion, leading to damage. Furthermore, the electrode assembly may shake inside the casing during battery use, causing the tabs connecting adjacent electrode components to tear and break, resulting in battery damage and failure.

[0005] Therefore, there is an urgent need for a battery and power supply device to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a battery and electrical device that can prevent damage to the electrode assembly when it is installed in the casing, and can shorten the length of a single electrode assembly to avoid bending and deformation due to excessive length of the electrode assembly. In addition, the electrode assembly is fixed by a fixed frame to ensure effective contact between the tabs of two adjacent electrode assemblies.

[0007] To achieve the above objectives, the following technical solution is provided:

[0008] A battery comprising:

[0009] case;

[0010] A pole group includes at least two pole group components arranged along a first direction, and each of the two adjacent pole group components has a tab on its side facing each other.

[0011] A fixed frame is provided around the outer periphery of the electrode assembly so that the tabs of two adjacent electrode assemblies abut against each other. The abutting force applied by the fixed frame to the electrode assembly along the first direction is adjustable. The fixed frame is disposed within the housing.

[0012] As an optional solution, the fixing frame includes two first side plates arranged along a first direction and two second side plates arranged along a second direction. The first side plates and the second side plates are connected end to end to form a receiving cavity. The pole group is disposed in the receiving cavity. The first direction and the second direction are arranged at an angle.

[0013] As an optional solution, at least one of the second side plates includes:

[0014] The first component is connected to one of the first side plates;

[0015] The second part is connected to another of the first side plates. One of the first part and the second part is provided with a protrusion, and the other is provided with a socket. There are multiple sockets, which are arranged at intervals along a first direction. The protrusion can be plugged into any of the sockets.

[0016] As an alternative, one of the first and second parts is provided with a receiving groove, and at least a portion of the other of the first and second parts is located within the receiving groove.

[0017] As an optional solution, the first split part is inserted into the second split part, and the depth of the first split part inserted into the second split part is adjustable;

[0018] Alternatively, the second component can be inserted into the first component, and the depth of insertion of the second component into the first component can be adjusted.

[0019] As an optional solution, the first split body and one of the first side panels are integrally formed;

[0020] And / or, the second part is integrally formed with another of the first side panels.

[0021] As an alternative, two adjacent electrode components have stepped surfaces on their sides facing each other, and the electrode tabs of the electrode components are disposed on the stepped surfaces.

[0022] As an optional solution, the stepped surface includes a first platform and a second platform, one of which is provided with a positive electrode tab and the other with a negative electrode tab, and the positive electrode tab of one of the two adjacent electrode components abuts against the negative electrode tab of the other electrode component.

[0023] As an optional solution, the fixing frame is made of insulating material.

[0024] An electrical device includes a main body and the battery described above, the battery being configured to supply power to the main body of the electrical device.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] The battery provided by this utility model uses a fixed frame surrounding the electrode assembly. When the electrode assembly is inserted into the casing, the fixed frame contacts the casing, preventing the electrode assembly from directly contacting the casing and thus avoiding collisions and damage. By dividing the electrode assembly into multiple electrode components, the length of each individual component is shortened, preventing the electrode assembly from becoming too long and bending or deforming, and avoiding problems such as wrinkles, deformation, delamination, and breakage of the electrode sheets. The adjustable abutment force applied by the fixed frame to the electrode assembly firmly fixes the electrode assembly in place, preventing the electrode components from shaking within the fixed frame and ensuring effective contact between the tabs of adjacent electrode assemblies. This improves the structural stability of the battery, prevents battery damage and failure, and extends the battery's lifespan. Furthermore, the tabs of adjacent electrode components are connected through surface contact, saving the welding process between the tabs of adjacent electrode assemblies and helping to improve battery production efficiency.

[0027] The electrical device provided by this utility model, by using the aforementioned battery, has a long service life, as well as a high-safety battery capacity and a high voltage, thereby improving the device's endurance and safety performance. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 An exploded view of the battery provided in Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the fixed frame provided in Embodiment 1 of this utility model;

[0031] Figure 3 for Figure 3 A magnified view of a section at point A in the middle;

[0032] Figure 4 This is a schematic diagram of the pole assembly provided in Embodiment 1 of this utility model;

[0033] Figure 5 An exploded view of the electrode assembly provided in Embodiment 1 of this utility model;

[0034] Figure 6This is a schematic diagram of the structure of the polar component provided in Embodiment 1 of this utility model;

[0035] Figure 7 This is a schematic diagram of the structure of an end cap provided in one embodiment of the present utility model;

[0036] Figure 8 This is a cross-sectional view of the end cap provided in Embodiment 1 of this utility model;

[0037] Figure 9 This is a structural schematic diagram of the vehicle provided in Embodiment 2 of this utility model.

[0038] Figure label:

[0039] 1000, vehicles;

[0040] 100. Battery;

[0041] 10. Housing; 11. Explosion-proof vent;

[0042] 20. End cap; 21. Cover plate; 22. Lower plastic part; 221. Clearance hole; 23. Fixing part;

[0043] 30. Pole group; 31. Pole group components; 311. Step surface; 3111. First platform; 3112. Second platform;

[0044] 40. Insulating film;

[0045] 50. Fixed frame; 5001. Receiving cavity; 51. First side plate; 511. Through hole; 52. Second side plate; 521. First split part; 5211. Protrusion; 522. Second split part; 5221. Insertion hole; 5222. Receiving groove;

[0046] 200, controller; 300, motor. Detailed Implementation

[0047] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0048] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0053] Example 1

[0054] like Figure 1 As shown, this embodiment provides a battery 100, which includes a housing 10 and an electrode assembly 30. The electrode assembly 30 is disposed within the housing 10, and the housing 10 serves to support and protect the electrode assembly 30. The housing 10 can be made of plastic or metal. When the housing 10 is made of metal, it has better heat dissipation performance, higher strength, and can provide support itself.

[0055] In this embodiment, the housing 10 has openings at both ends along the first direction. The battery 100 also includes two end caps 20, which are respectively placed over the corresponding openings. The electrode assembly 30 is connected to the end caps 20, and the end caps 20 are connected to the main body of the external electrical device, thereby enabling the battery 100 to supply power to the main body of the electrical device. In other embodiments, the number of end caps 20 may be one, with one opening in the housing 10 and the end cap 20 covering the opening. In this embodiment, the first direction is the length direction of the housing 10.

[0056] In current technologies, to increase battery capacity, batteries are increasingly designed to elongate the electrode assembly. However, this elongation presents several challenges. First, it increases the difficulty of inserting the electrode assembly into the casing, making it prone to collisions and damage. Second, due to their inherent strength limitations, the electrode assembly is susceptible to bending and deformation, leading to defects such as wrinkles, deformation, delamination, and breakage, resulting in reduced yield. To address these issues, some batteries utilize multiple series-connected electrode components within the battery casing. However, this also increases the difficulty of inserting the electrode assembly into the casing, as it is easily damaged by collisions. Furthermore, during use, the electrode assembly may move within the casing, causing the tabs between adjacent electrode components to tear and break, leading to battery failure.

[0057] To solve the above problems, the battery 100 provided in this embodiment also includes a fixing frame 50. The electrode group 30 includes at least two electrode group components 31 arranged along a first direction. Each of the two adjacent electrode group components 31 has a tab on its side facing each other. The fixing frame 50 surrounds the outer periphery of the electrode group 30 so that the tabs of the two adjacent electrode group components 31 abut against each other. The abutting force applied by the fixing frame 50 to the electrode group 30 along the first direction is adjustable.

[0058] By using a fixed frame 50 surrounding the electrode assembly 30, the fixed frame 50 contacts the housing 10 when the electrode assembly 30 is inserted into the housing, preventing the electrode assembly 30 from directly contacting the housing 10, thereby avoiding collisions between the electrode assembly 30 and the housing 10 and preventing damage to the electrode assembly 30. By dividing the electrode assembly 30 into multiple electrode assembly components 31, the length of each individual electrode assembly component 31 is shortened, thereby preventing the electrode assembly 30 from becoming too long and bending or deforming, and preventing problems such as wrinkles, deformation, delamination, and breakage of the electrode sheets. The fixed frame 50 is positioned along the first direction. The abutment force applied to the electrode assembly 30 is adjustable, which can firmly fix the electrode assembly 30 and prevent the electrode assembly sub-assemblies 31 from shaking within the fixed frame 50. This ensures effective contact between the tabs of adjacent electrode assemblies 30, thereby improving the structural stability of the battery 100, preventing damage and failure of the battery 100, and extending the service life of the battery 100. In addition, the tabs of adjacent electrode assembly sub-assemblies 31 are connected by surface contact, saving the welding process of the tabs of adjacent electrode assembly sub-assemblies 31 and helping to improve the production efficiency of the battery 100.

[0059] Combination Figures 1-3 The structure of the fixed frame 50 is described, such as... Figures 1-3 As shown, the fixed frame 50 includes two first side plates 51 arranged along a first direction and two second side plates 52 arranged along a second direction. The first side plates 51 and the second side plates 52 are connected end to end to form a receiving cavity 5001. The pole group 30 is disposed in the receiving cavity 5001 to realize the fixing and support of the four sides of the pole group 30 by the fixed frame 50.

[0060] In this embodiment, the first direction is the length direction of the housing 10, and the second direction is the width direction of the housing 10; that is, the first direction is perpendicular to the second direction. Of course, in other embodiments, the first direction and the second direction may be set at other angles, which are not limited here.

[0061] Optionally, at least one second side plate 52 includes a first part 521 and a second part 522. The first part 521 is connected to one of the first side plates 51, and the second part 522 is connected to the other first side plate 51. One of the first part 521 and the second part 522 is provided with a protrusion 5211, and the other is provided with a socket 5221. There are multiple sockets 5221, which are arranged at intervals along a first direction. The protrusion 5211 can be inserted into any socket 5221. By allowing the protrusion 5211 to be inserted into any socket 5221, the size of the receiving cavity 5001 can be adjusted. In other words, the abutment force applied by the first side plate 51 to the electrode group 30 along the first direction is adjustable, thereby firmly fixing the electrode group 30 in the receiving cavity 5001, thus ensuring effective contact between the tabs of two adjacent electrode groups 30.

[0062] In this embodiment, the first segment 521 is disposed outside the second segment 522, and the second segment 522 is provided with a receiving groove 5222. At least a portion of the first segment 521 is located within the receiving groove 5222, thereby reducing the amount of space occupied by the first segment 521 along the second direction of the housing 10 and improving the space utilization rate of the housing 10. Of course, in other embodiments, the receiving groove 5222 can also be disposed on the first segment 521, with at least a portion of the second segment 522 located within the receiving groove 5222, achieving the same effect.

[0063] In another possible implementation, the first component 521 is inserted into the second component 522, and the depth of insertion of the first component 521 into the second component 522 is adjustable to adjust the abutment force applied by the first side plate 51 to the electrode assembly 30 along the first direction, so that the fixing frame 50 firmly fixes the electrode assembly 30. Specifically, the first component 521 and the second component 522 are interference-fitted to ensure the stability of the connection between the first component 521 and the second component 522. In other embodiments, the second component 522 is inserted into the first component 521, and the depth of insertion of the second component 522 into the first component 521 is adjustable, which can also achieve the above effect.

[0064] Optionally, the first component 521 and one of the first side plates 51 are integrally formed, and / or the second component 522 is integrally formed with the other first side plate 51, in order to improve the overall strength of the fixed frame 50, reduce the number of parts, simplify the assembly process, and make installation simple.

[0065] like Figures 4-6 As shown, two adjacent pole components 31 have stepped surfaces 311 on their sides facing each other. The pole ears of the pole components 31 are set on the stepped surfaces 311. During assembly, the stepped surfaces 311 of the two adjacent pole components 31 are interlocked, which facilitates the assembly and positioning of the two adjacent pole components 31 and improves the assembly efficiency of the pole components 31.

[0066] Specifically, the stepped surface 311 includes a first platform 3111 and a second platform 3112. One of the first platform 3111 and the second platform 3112 is provided with a positive electrode tab, and the other is provided with a negative electrode tab. The positive electrode tab of one of the two adjacent electrode components 31 abuts against the negative electrode tab of the other electrode component 31 to improve the capacity and voltage of the battery 100.

[0067] Optionally, the fixing frame 50 is made of insulating material to achieve insulation between the electrode group 30 and the inner wall of the housing 10, thereby improving the safety performance of the battery 100.

[0068] Optionally, the fixed frame 50 is made by injection molding, which has high production efficiency and good product quality.

[0069] like Figure 1 , Figure 7 and Figure 8 As shown, the end cap 20 includes a cover plate 21, a lower plastic part 22, and a fixing member 23. The cover plate 21 covers the opening of the housing 10. The lower plastic part 22 is disposed on the side of the cover plate 21 facing the electrode group 30. The lower plastic part 22 is connected to the cover plate 21 through the fixing member 23. The fixing member 23 abuts against the first side plate 51. By providing the lower plastic part 22, short circuits are prevented, and the safety performance of the battery 100 is further improved.

[0070] Optionally, the cover plate 21 is made of plain aluminum sheet. Plain aluminum sheet has advantages such as easy processing and forming, light weight, and good thermal conductivity.

[0071] Optionally, a polarity mark is provided on the cover plate 21 to mark the positive and negative terminals of the battery 100, so as to distinguish the positive and negative terminals of the battery 100.

[0072] Optionally, the first side plate 51 is provided with a through hole 511, and the lower plastic part 22 is provided with a clearance hole 221. The electrode tabs located at both ends of the electrode assembly 30 along the first direction are sequentially passed through the corresponding through hole 511 and clearance hole 221 and then connected to the cover plate 21. The through hole 511 and clearance hole 221 realize the clearance function of the electrode tabs.

[0073] Optionally, the lower plastic part 22 is flat to facilitate the fit between the lower plastic part 22 and the cover plate 21, and to avoid problems such as excessive gap between the lower plastic part 22 and the cover plate 21 causing the electrode tabs to get stuck.

[0074] like Figure 1As shown, the battery 100 also includes an insulating film 40. The insulating film 40 covers the outer periphery of the electrode assembly 30 and the fixing frame 50 and is located inside the housing 10. After the electrode assembly 30 and the fixing frame 50 are assembled, the insulating film 40 is applied, and then the electrode assembly 30 and the fixing frame 50 covered with the insulating film 40 are installed into the housing 10. The insulating film 40 improves the insulation protection capability of the electrode assembly 30. Specifically, the insulating film 40 is a Mylar film.

[0075] Optionally, the housing 10 is provided with an explosion-proof hole 11, and an explosion-proof valve is provided inside the explosion-proof hole 11. When an abnormality occurs inside the battery 100, the gas pressure inside the housing 10 reaches the explosion-proof threshold of the explosion-proof valve, the explosion-proof valve opens, and the gas is discharged from the explosion-proof hole 11, releasing the internal pressure of the housing 10, preventing the battery 100 from thermal runaway and exploding and catching fire, and improving the safety of the battery 100.

[0076] In this embodiment, one of the two sides of the housing 10 along the second direction is provided with one explosion-proof hole 11, and the other side is provided with two explosion-proof holes 11. The two explosion-proof holes 11 are arranged at intervals along the first direction to shorten the gas discharge path and the distance of gas discharge, thereby further improving the safety performance of the battery 100. Of course, in other embodiments, the number and location of the explosion-proof holes 11 can be adapted according to actual needs, and are not limited here.

[0077] Optionally, the insulating film 40 is provided with a slit, which is directly opposite the explosion-proof hole 11, so that the gas in the electrode assembly 30 can be quickly discharged through the slit.

[0078] Example 2

[0079] This embodiment provides an electrical device, which includes a main body and a battery 100 provided in Embodiment 1. The battery 100 can provide power to the main body of the electrical device, thereby enabling the main body of the electrical device to automatically complete preset actions through power, ensuring good performance of the main body of the electrical device, and ensuring the service life and safety performance of the electrical device.

[0080] Specifically, the main body of the electrical device can be a vehicle, mobile phone, portable device, laptop, ship, spacecraft, electric toy, or power tool, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles or hybrid electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, or electric planers, etc. This embodiment does not limit the main body of the aforementioned electrical device.

[0081] The following examples are for illustrative purposes only. Figure 9 As shown, an embodiment of this application will be described using a vehicle 1000 as an example of an electrical device. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. There can be one or more batteries 100, and these batteries can be connected in series, in parallel, or in a mixed configuration. A mixed configuration means that some of the batteries 100 are connected in series and others in parallel.

[0082] Battery 100 can be used to power vehicle 1000, for example, battery 100 can be used as the operating power source for vehicle 1000. Vehicle 1000 may also include controller 200 and motor 300, controller 200 is used to control battery 100 to power motor 300, for example, for the power needs of vehicle 100 during start-up, navigation and driving.

[0083] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0084] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery, characterized by, include: Shell (10); The electrode assembly (30) includes at least two electrode component parts (31) arranged along a first direction, and each of the two adjacent electrode component parts (31) is provided with an electrode tab on the side facing each other; A fixed frame (50) is arranged around the outer periphery of the electrode group (30) so that the tabs of two adjacent electrode groups (31) abut against each other. The abutting force applied by the fixed frame (50) to the electrode group (30) along the first direction is adjustable. The fixed frame (50) is disposed inside the housing (10).

2. The battery of claim 1, wherein, The fixed frame (50) includes two first side plates (51) arranged along a first direction and two second side plates (52) arranged along a second direction. The first side plates (51) and the second side plates (52) are connected end to end to form a receiving cavity (5001). The pole group (30) is disposed in the receiving cavity (5001). The first direction and the second direction are arranged at an angle.

3. The battery of claim 2, wherein, At least one of the second side plates (52) includes: The first component (521) is connected to one of the first side plates (51); The second part (522) is connected to another first side plate (51). One of the first part (521) and the second part (522) is provided with a protrusion (5211), and the other is provided with a socket (5221). There are multiple sockets (5221), which are arranged at intervals along the first direction. The protrusion (5211) can be inserted into any of the sockets (5221).

4. The battery of claim 3, wherein, One of the first part (521) and the second part (522) is provided with a receiving groove (5222), and at least a portion of the other part (521) and the second part (522) is located in the receiving groove (5222).

5. The battery of claim 3, wherein, The first part (521) is inserted into the second part (522), and the depth of the first part (521) inserted into the second part (522) is adjustable; Alternatively, the second part (522) can be inserted into the first part (521), and the depth of the second part (522) inserted into the first part (521) can be adjusted.

6. The battery of claim 3, wherein, The first split body (521) and one of the first side plates (51) are integrally formed; And / or, the second part (522) is integrally formed with another of the first side panels (51).

7. The battery according to any one of claims 1 to 6, wherein Two adjacent polar component parts (31) are provided with a stepped surface (311) on the side facing each other, and the electrode tabs of the polar component parts (31) are provided on the stepped surface (311).

8. The battery of claim 7, wherein, The stepped surface (311) includes a first platform (3111) and a second platform (3112). One of the first platform (3111) and the second platform (3112) is provided with a positive electrode tab, and the other is provided with a negative electrode tab. The positive electrode tab of one of the two adjacent electrode components (31) abuts against the negative electrode tab of the other electrode component (31).

9. The battery according to any one of claims 1 to 6, wherein The fixed frame (50) is made of insulating material.

10. An electrical appliance, comprising an electrical appliance body, characterized in that, The electrical device further comprises a battery as claimed in any of claims 1-9, the battery being configured to power the electrical device body.

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