Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, the battery includes: shell, mounting cover and pole, be equipped with the cell accommodation chamber in the shell, mounting cover is equipped on the shell and is located outside the shell, mounting cover and shell together form the pole accommodation chamber, the pole is equipped in the pole accommodation chamber. According to the battery, the mounting cover is arranged outside the shell, the mounting cover and the shell jointly form the accommodating cavity, and the pole is arranged in the accommodating cavity, so that the pole can be positioned on the outer side of the shell, the pole does not occupy the space of the battery core accommodating cavity, and the energy density of the battery can be further improved.

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] Currently, batteries are developing towards higher energy density, higher cycle performance, higher safety performance, and lower cost. In order to improve the energy density of batteries, in addition to improvements in the system and materials, compact structural design also has an important impact on improving space utilization and energy density.

[0003] In related technologies, the terminals in square batteries are fixed to the casing by riveting. After the terminals pass through the casing, they are electrically connected to the electrodes inside the casing. This not only makes installation troublesome and increases processing costs, but also requires the terminals to be welded to the adapter plates in the battery. The overlapping space between the terminals and the adapter plates wastes internal battery space and is not conducive to improving the battery's energy density. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a battery in which the terminals do not occupy space inside the casing, thereby increasing the battery's energy density.

[0005] This utility model further proposes an electrical device.

[0006] The battery according to this utility model includes: a housing, a mounting cover, and terminals. A cell receiving cavity is formed inside the housing. The mounting cover is installed on the housing and located outside the housing. The mounting cover and the housing together form a terminal receiving cavity, and the terminals are installed inside the terminal receiving cavity.

[0007] According to the present invention, by setting an installation cover on the outside of the casing, the installation cover and the casing together form a receiving cavity, and the terminal post is set in the receiving cavity. This allows the terminal post to be located on the outside of the casing, so that the terminal post does not occupy the space of the cell receiving cavity, thereby improving the energy density of the battery.

[0008] In some examples of this utility model, the pole post is constructed in a sheet shape, and the thickness direction of the pole post is the same as the height direction of the pole post receiving cavity.

[0009] In some examples of this utility model, the thickness of the pole post is d, and d satisfies the relationship: 0.05mm≤d≤0.3mm.

[0010] In some examples of this utility model, the mounting cover is provided with a first through hole, and the battery further includes: a first conductive element, which passes through the first through hole and is connected to the terminal post, and the first conductive element is used to connect with external components.

[0011] In some examples of this utility model, the housing is provided with a second through hole, and the battery further includes: a battery cell and a second conductive element. The battery cell is disposed in the battery cell receiving cavity and has a tab. The second conductive element passes through the second through hole and is respectively connected to the terminal post and the tab.

[0012] In some examples of this utility model, the housing is provided with a second through hole, and the battery further includes: a battery cell, the battery cell being disposed in the battery cell receiving cavity, the battery cell having a tab, the tab being disposed through the second through hole and connected to the terminal post.

[0013] In some examples of this utility model, the battery further includes: an insulating structure disposed within the terminal receiving cavity and located between the mounting cover and the terminal, so as to insulate and isolate the mounting cover and the terminal; the insulating structure is provided with a first clearance hole corresponding to the first through hole and a second clearance hole corresponding to the second through hole.

[0014] In some examples of this utility model, the insulating structure includes: a first insulating member and a second insulating member. The first insulating member is disposed on the side of the pole away from the housing. The first insulating member has a first flange extending into the first through hole and surrounding the first clearance hole. The second insulating member is disposed on the side of the pole close to the housing and abuts against the first insulating member. The second insulating member has a second flange extending into the second through hole and surrounding the second clearance hole.

[0015] In some examples of this utility model, the minimum distance from the first through hole to the outer peripheral edge of the mounting cover is L, and L satisfies the relationship: L≥0.8mm.

[0016] In some examples of this utility model, the mounting cover includes a pressure cap and a support portion. The pressure cap is disposed on the side of the pole away from the housing. The support portion is connected to the outer peripheral edge of the pressure cap and is mounted on the housing. The pressure cap, the support portion, and the housing together form the pole receiving cavity.

[0017] In some examples of this utility model, the housing is provided with a plurality of mounting holes, and the support is provided with a plurality of mounting parts on the side near the housing. The plurality of mounting parts are inserted into the mounting holes one by one and welded to the housing at the corresponding mounting holes.

[0018] In some examples of this utility model, a third flange is provided on the side of the support near the housing, and the third flange is in surface contact with and welded to the housing surface.

[0019] In some examples of this utility model, the height of the mounting cover is h, and h satisfies the relationship: 0.6mm≤h≤2mm.

[0020] In some examples of this utility model, the mounting cover is an integrally formed metal cover; and / or the mounting cover is constructed of the same metal material as the housing.

[0021] The electrical equipment according to this utility model includes: the battery described above.

[0022] Compared with the prior art, this utility model adopts a method of setting an installation cover on the outside of the shell, with the installation cover and the shell together forming a receiving cavity, and the electrode post set in the receiving cavity. This allows the electrode post to be located on the outside of the shell, so that the electrode post does not occupy the space of the cell receiving cavity, thereby improving the energy density of the battery.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the battery structure according to an embodiment of the present utility model;

[0026] Figure 2 This is an exploded view of a battery according to an embodiment of the present utility model;

[0027] Figure 3 This is a partial cross-sectional view of a battery from a first angle according to an embodiment of the present utility model;

[0028] Figure 4 This is a second-angle partial cross-sectional view of a battery according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Battery;

[0031] 10. Housing; 11. Cell receiving cavity; 12. Second through hole; 13. Mounting hole; 20. Mounting cover; 21. First through hole; 22. Pressure cap; 23. Support; 24. Mounting part; 30. Terminal post; 40. First conductive element; 50. Second conductive element; 60. Insulation structure; 61. First insulating element; 62. Second insulating element; 63. First flange. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0033] The following is for reference. Figures 1-4 This invention describes a battery 100 according to an embodiment of the present invention, which is used in electrical devices, such as mobile phones, tablets, and other wearable electrical devices.

[0034] like Figures 1-4 As shown, the battery 100 according to the present invention includes: a housing 10, a mounting cover 20 and a terminal post 30. A cell receiving cavity 11 is formed inside the housing 10. The mounting cover 20 is installed on the housing 10 and located outside the housing 10. The mounting cover 20 and the housing 10 together form a terminal post receiving cavity. The terminal post 30 is installed inside the terminal post receiving cavity.

[0035] It is understood that the housing 10, mounting cover 20, and terminal post 30 constitute the main structure of the battery 100. The housing 10 forms a cell receiving cavity 11, which provides an installation position for the cell. This not only facilitates cell installation but also protects the cell, thereby improving the cell's lifespan and performance. The mounting cover 20 is located on the outside of the housing 10, forming a space between the mounting cover 20 and the housing 10. This space forms a terminal post receiving cavity, which provides an installation position for the terminal post 30. This not only facilitates the installation of the terminal post 30 but also protects the terminal post 30, thereby improving its lifespan and performance. Furthermore, since the terminal post 30 is located on the outside of the housing 10, it does not occupy the space of the cell receiving cavity 11, thus increasing the energy density of the battery 100.

[0036] Therefore, by providing an installation cover 20 on the outside of the housing 10, the installation cover 20 and the housing 10 together form a receiving cavity, and the terminal post 30 is disposed in the receiving cavity. This allows the terminal post 30 to be located on the outside of the housing 10, so that the terminal post 30 does not occupy the space of the cell receiving cavity 11, thereby improving the energy density of the battery 100.

[0037] Among them, such as Figure 3 and Figure 4As shown, the electrode post 30 is constructed in a sheet shape, and the thickness direction of the electrode post 30 is the same as the height direction of the electrode post receiving cavity. It can be understood that the sheet-shaped electrode post 30 does not occupy the height of the outer side of the housing 10, and since the thickness direction of the electrode post 30 is the same as the height direction of the electrode post receiving cavity, the surface with the larger area of ​​the electrode post 30 is parallel to the surface of the housing 10. The sheet-shaped electrode post 30 has low processing cost and is simple to process; that is, the electrode post 30 is formed by cutting. This design can reduce the overall height of the battery 100, while still ensuring the energy density of the battery 100 and ensuring the current connecting the electrode post 30 to the cell and other external components of the battery 100.

[0038] Optionally, such as Figure 3 As shown, the thickness of the terminal 30 is d, where d satisfies the relationship: 0.05mm ≤ d ≤ 0.3mm. This means the thickness of the terminal 30 must be within a reasonable range. If the thickness is less than 0.05mm, it will result in insufficient current carrying capacity, making it prone to melting when transmitting large currents between the battery 100 and other external components, rendering the battery 100 unusable. If the thickness is greater than 0.3mm, it will result in excessive thickness, leading to an excessively large overall height of the battery 100, which is detrimental to battery installation and the arrangement of other components. A reasonable thickness not only ensures the durability and conductivity of the terminal 30 but also prevents the overall height of the battery 100 from becoming excessive. For example, the thickness of the terminal 30 can be 0.1mm, 0.2mm, or 0.25mm, with the specific value chosen based on the actual situation.

[0039] In addition, such as Figures 1-4 As shown, the mounting cover 20 is provided with a first through hole 21. The battery 100 also includes a first conductive element 40, which passes through the first through hole 21 and is connected to the terminal post 30. The first conductive element 40 is used to connect with external components.

[0040] It is understandable that a first through hole 21 is opened on the mounting cover 20, a first conductive element 40 is inserted through the first through hole 21, and the terminal post 30 is located between the mounting cover 20 and the housing 10. One end of the first conductive element 40 is provided with a bent edge, which is connected to the terminal post 30. This facilitates the electrical connection between the first conductive element 40 and the terminal post 30, and also the electrical connection between the first conductive element 40 and the external components. This allows the terminal post 30 and the first conductive element 40 to connect the external components and the battery cell, thereby ensuring the normal operation of the battery 100.

[0041] In addition, such as Figures 2-4As shown, the housing 10 is provided with a second through hole 12, and the battery 100 also includes: a battery cell and a second conductive element 50. The battery cell is disposed in the battery cell receiving cavity 11 and has a tab. The second conductive element 50 passes through the second through hole 12 and is connected to the terminal post 30 and the tab respectively.

[0042] In other words, a second through hole 12 is opened on the housing 10, and a cell receiving cavity 11 is formed inside the housing 10. The cell receiving cavity 11 can provide an installation position for the cell, which not only facilitates the installation of the cell, but also protects the cell, thereby improving the service life of the cell and ensuring its performance. A tab is provided on the cell, and a bent edge is also provided at one end of the second conductive member 50. The bent edge is connected to the terminal post 30, which facilitates the electrical connection between the second conductive member 50 and the terminal post 30. The first conductive member 40 and the second conductive member 50 are located on both sides of the terminal post 30, respectively. The side of the second conductive member 50 away from the bent edge is connected to the tab, so that the terminal post 30, the first conductive member 40, the second conductive member 50 and the tab can connect the external components and the cell, thereby ensuring the normal operation of the battery 100.

[0043] In addition, such as Figure 2 As shown, the housing 10 is provided with a second through hole 12, and the battery 100 also includes a battery cell, which is disposed in the battery cell receiving cavity 11. The battery cell has a tab, which passes through the second through hole 12 and is connected to the terminal post 30.

[0044] It is understood that a second through hole 12 is opened on the housing 10, and a cell receiving cavity 11 is formed inside the housing 10. The cell receiving cavity 11 can provide an installation position for the cell, which not only facilitates the installation of the cell, but also protects the cell, thereby improving the service life of the cell and ensuring its performance. The cell has a wound structure or a stacked structure. A tab is provided on the cell. After the tab passes through the second through hole 12, it is connected to the terminal post 30. The first conductive element 40 and the tab are located on both sides of the terminal post 30, so that the terminal post 30, the first conductive element 40 and the tab can connect the external components and the cell, thereby ensuring the normal operation of the battery 100. The terminal post 30 is connected to the positive tab, and the housing 10 is connected to the negative tab, or the two terminals 30 are connected to the positive tab and the negative tab respectively.

[0045] For example, a second conductive element 50 is pre-set on the terminal post 30. After the terminal post 30 is installed in the terminal post 30 receiving cavity, the tab in the cell is then welded to the second conductive element 50, which can save material costs. Alternatively, the second conductive element 50, the terminal post 30 and the tab are arranged in an overlapping manner and then laser-welded together. That is, the tab is first set on one side of the terminal post 30, which can reduce welding steps and thus improve the production efficiency of the battery 100.

[0046] In addition, such as Figure 3 and Figure 4As shown, the battery 100 also includes an insulating structure 60, which is disposed in the cavity of the terminal post 30 and located between the mounting cover 20 and the terminal post 30 to insulate and isolate the mounting cover 20 and the terminal post 30. The insulating structure 60 is provided with a first clearance hole corresponding to the first through hole 21 and a second clearance hole corresponding to the second through hole 12.

[0047] In other words, the insulating structure 60 is located within the receiving cavity of the terminal post 30. This cavity provides a mounting position for the insulating structure 60, facilitating its installation. The mounting cover 20 also protects the insulating structure 60, thus extending its service life and ensuring its performance. Furthermore, the insulating structure 60 is located between the mounting cover 20 and the terminal post 30, isolating them. This ensures that the terminal post 30 connects the current inside and outside the battery 100, while the mounting cover 20 does not obstruct the normal flow of current, thereby preventing interference between the terminal post 30 and the mounting cover 20. In case of a short circuit, the insulation structure 60 has a first clearance hole near the first through hole 21 and a second clearance hole near the second through hole 12. The first through hole 21 and the first clearance hole correspond to each other, and the second through hole 12 and the second clearance hole correspond to each other. This allows the first conductive element 40 to be connected to the terminal post 30, and then to the external component through the first clearance hole and the first through hole 21. Similarly, the second conductive element 50 to be connected to the terminal post 30, and then to the tab through the second clearance hole and the second through hole 12. This allows the terminal post 30, the first conductive element 40, the second conductive element 50 and the tab to connect to the external component and the battery cell, thereby ensuring the normal operation of the battery 100.

[0048] Among them, such as Figure 3 and Figure 4 As shown, the insulation structure 60 includes: a first insulating member 61 and a second insulating member 62. The first insulating member 61 is disposed on the side of the pole post 30 away from the housing 10. The first insulating member 61 is provided with a first flange 63 extending into the first through hole 21 and surrounding the first clearance hole. The second insulating member 62 is disposed on the side of the pole post 30 close to the housing 10 and abuts against the first insulating member 61. The second insulating member 62 is provided with a second flange extending into the second through hole 12 and surrounding the second clearance hole.

[0049] It is understood that the first insulating member 61 and the second insulating member 62 constitute the main body of the insulating structure 60. The first insulating member 61 is located on the side of the pole 30 away from the housing 10, and the second insulating member 62 is located on the side of the pole 30 closer to the housing 10. The first insulating member 61 and the second insulating member 62 are arranged opposite to each other, which facilitates mutual grounding between the first insulating member 61 and the second insulating member 62. This allows the first insulating member 61 and the second insulating member 62 to isolate the pole 30 and the mounting cover 20. Moreover, the first insulating member 61 is provided with a first flange 63. The first flange 63 extends into the first through hole 21 and is distributed around the first clearance hole, thereby protecting the first clearance hole and facilitating the assembly between the first insulating member 61 and the mounting cover 20. The second insulating member 62 is provided with a second flange, which extends into the second through hole 12 and is distributed around the second clearance hole, thereby protecting the second clearance hole and facilitating the assembly between the second insulating member 62 and the mounting cover 20, as well as ensuring the insulation between the first insulating member 61 and the second insulating member 62 and the pole post 30 and the mounting cover 20.

[0050] For example, the first insulating element 61 and the second insulating element 62 are made of highly plastic plastic or rubber, which makes the first insulating element 61 and the second insulating element 62 malleable, easy to process, and also ensures insulation.

[0051] Optionally, such as Figure 3 As shown, the minimum distance from the first through hole 21 to the outer peripheral edge of the mounting cover 20 is L, and L satisfies the relationship: L≥0.8mm.

[0052] In other words, the minimum distance from the first through hole 21 to the outer periphery of the mounting cover 20 must be within a reasonable range. If the minimum distance is less than 0.8mm, the area of ​​the first through hole 21 will be too large, resulting in a poor seal of the mounting cover 20. If the minimum distance is greater than or equal to 0.8mm, the sealing performance of the mounting cover 20 can be guaranteed, thus ensuring that the electrode post 30 can transmit current between the battery cell and external components. For example, the minimum distance from the first through hole 21 to the outer periphery of the mounting cover 20 can be 0.8mm, 0.9mm, or 1mm, with the specific value selected based on the actual situation.

[0053] In addition, such as Figures 1-4 As shown, the mounting cover 20 includes a pressure cover portion 22 and a support portion 23. The pressure cover portion 22 is disposed on the side of the pole post 30 away from the housing 10. The support portion 23 is connected to the outer peripheral edge of the pressure cover portion 22 and is mounted on the housing 10. The pressure cover portion 22, the support portion 23 and the housing 10 together form a pole post receiving cavity.

[0054] It is understood that the pressure cap 22 and the support 23 constitute the main structure of the mounting cover 20. The support 23 is disposed on the outer peripheral surface of the housing 10, and the pressure cap 22 is disposed at the end of the support 23 away from the housing 10. Moreover, the support 23 is located at the outer peripheral edge of the pressure cap 22. This allows a certain space to be formed between the pressure cap 22, the support 23 and the housing 10. This space forms a terminal receiving cavity, which can provide an installation position for the terminal 30. This not only facilitates the installation of the terminal 30, but also allows the pressure cap 22 to press the terminal 30 and the insulation structure 60 together, thereby improving the service life of the terminal 30 and ensuring its performance. It also ensures the sealing of the mounting cover 20 and reduces the overall height of the battery 100.

[0055] In addition, such as Figure 2 As shown, the housing 10 is provided with a plurality of mounting holes 13, and the support 23 is provided with a plurality of mounting parts 24 on the side near the housing 10. The plurality of mounting parts 24 are inserted into the mounting holes 13 in a one-to-one correspondence and are welded to the housing 10 at the corresponding mounting holes 13.

[0056] In other words, multiple mounting holes 13 are provided on one side surface of the housing 10, and multiple mounting parts 24 are provided on the side of the support 23 facing the housing 10. The multiple mounting parts 24 and the multiple mounting holes 13 correspond one-to-one. This facilitates the insertion and cooperation of the mounting parts 24 and the mounting holes 13, and also allows the mounting parts 24 and the mounting holes 13 to be positioned relative to each other. This makes it easier for the support 23 to be installed on one side of the housing 10, and also reduces the overall height of the battery 100, thereby saving space occupied by the battery 100 and making the battery 100 thinner. Moreover, the mounting parts 24 and the housing 10 are welded together, which makes the connection between the mounting cover 20 and the housing 10 more secure, and also prevents leakage of the battery 100, thereby improving the safety of the battery 100.

[0057] In other embodiments, a third flange is provided on the side of the support portion 23 near the housing 10. The third flange is in surface contact with and welded to the housing 10. It is understood that providing a third flange on the side of the support portion 23 facing the housing 10, and welding the third flange to the housing 10, not only ensures the contact area between the support portion 23 and the housing 10, but also makes the connection between the mounting cover 20 and the housing 10 more secure, and prevents leakage of the battery 100, thereby improving the safety of the battery 100.

[0058] Optionally, such as Figure 3As shown, the height of the mounting cover 20 is h, which satisfies the relationship: 0.6mm ≤ h ≤ 2mm. That is, the height of the mounting cover 20 must be within a reasonable range. If the height of the mounting cover 20 is less than 0.6mm, it will be difficult to place the terminal post 30 and the insulation structure 60 within the receiving cavity of the terminal post 30, and it will also compress the thickness of the terminal post 30, making the terminal post 30 susceptible to current breakdown. If the height of the mounting cover 20 is greater than 2mm, it will be too tall, resulting in an excessively large overall height of the battery 100, which is not conducive to the installation of the battery 100 and cannot improve the energy density of the battery 100. If the height of the mounting cover 20 is within a reasonable range, it not only facilitates the installation of the terminal post 30 and the insulation structure 60, but also reduces the overall height of the battery 100, thus facilitating the installation of the battery 100 and improving the energy density of the battery 100. For example, the height of the mounting cover 20 can be 0.8mm, 1mm, or 1.5mm, with the specific value selected according to the actual situation.

[0059] Specifically, the mounting cover 20 is a one-piece molded metal cover, and its construction uses the same metal material as the housing 10. It is understood that the one-piece molding of the mounting cover 20 not only facilitates manufacturing but also ensures its structural strength, thereby preventing breakage and sealing failure, thus improving the safety of the battery 100. Furthermore, since both the mounting cover 20 and the housing 10 are made of metal, the welding connection between them is convenient, further ensuring the overall structural strength of the battery 100. For example, the mounting cover 20 and the housing 10 could be made of stainless steel or titanium alloy.

[0060] The electrical device according to this utility model includes: the battery 100 of the above embodiment. By providing a mounting cover 20 on the outside of the housing 10, the mounting cover 20 and the housing 10 together form a receiving cavity, and the terminal post 30 is disposed in the receiving cavity. This allows the terminal post 30 to be located on the outside of the housing 10, so that the terminal post 30 does not occupy the space of the cell receiving cavity 11, thereby improving the energy density of the battery 100.

[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0062] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery (100), characterized in that, include: The housing (10) has a cell receiving cavity (11) formed inside the housing (10). Mounting cover (20), which is mounted on the housing (10) and located outside the housing (10), wherein the mounting cover (20) and the housing (10) together form a pole receiving cavity; The pole (30) is installed in the pole receiving cavity.

2. The battery (100) according to claim 1, characterized in that, The pole post (30) is constructed in a sheet shape, and the thickness direction of the pole post (30) is the same as the height direction of the pole post receiving cavity.

3. The battery (100) according to claim 2, characterized in that, The thickness of the pole (30) is d, and d satisfies the relationship: 0.05mm≤d≤0.3mm.

4. The battery (100) according to claim 1, characterized in that, The mounting cover (20) is provided with a first through hole (21), and the battery (100) further includes: The first conductive element (40) passes through the first through hole (21) and is connected to the pole post (30). The first conductive element (40) is used to connect with the external component.

5. The battery (100) according to claim 4, characterized in that, The housing (10) is provided with a second through hole (12), and the battery (100) further includes: A battery cell, wherein the battery cell is disposed within the battery cell receiving cavity (11), and the battery cell has tabs; The second conductive element (50) passes through the second through hole (12) and is connected to the pole post (30) and the tab respectively.

6. The battery (100) according to claim 4, characterized in that, The housing (10) is provided with a second through hole (12), and the battery (100) further includes: The battery cell is disposed in the battery cell receiving cavity (11), and the battery cell has a tab, which passes through the second through hole (12) and is connected to the pole (30).

7. The battery (100) according to claim 5 or 6, characterized in that, Also includes: An insulating structure (60) is disposed within the cavity of the pole post (30) and located between the mounting cover (20) and the pole post (30) to insulate and isolate the mounting cover (20) and the pole post (30). The insulating structure (60) is provided with a first clearance hole corresponding to the first through hole (21) and a second clearance hole corresponding to the second through hole (12).

8. The battery (100) according to claim 7, characterized in that, The insulating structure (60) includes: The first insulating member (61) is disposed on the side of the pole post (30) away from the housing (10), and the first insulating member (61) is provided with a first flange (63) extending into the first through hole (21) and surrounding the first clearance hole. The second insulating member (62) is disposed on the side of the pole post (30) near the housing (10) and abuts against the first insulating member (61). The second insulating member (62) is provided with a second flange extending into the second through hole (12) and surrounding the second clearance hole.

9. The battery (100) according to claim 4, characterized in that, The minimum distance from the first through hole (21) to the outer peripheral edge of the mounting cover (20) is L, and L satisfies the relationship: L≥0.8mm.

10. The battery (100) according to claim 1, characterized in that, The mounting cover (20) includes: A pressure cap (22) is provided on the side of the pole post (30) away from the housing (10); The support part (23) is connected to the outer peripheral edge of the cover part (22) and is installed on the housing (10). The cover part (22), the support part (23) and the housing (10) together form the pole receiving cavity.

11. The battery (100) according to claim 10, characterized in that, The housing (10) is provided with a plurality of mounting holes (13), and the support (23) is provided with a plurality of mounting parts (24) on the side near the housing (10). The plurality of mounting parts (24) are inserted into the mounting holes (13) one by one and are welded to the housing (10) at the corresponding mounting holes (13).

12. The battery (100) according to claim 10, characterized in that, The support part (23) has a third flange on the side near the housing (10), and the third flange is in surface contact with the housing (10) and welded together.

13. The battery (100) according to any one of claims 1-12, characterized in that, The height of the mounting cover (20) is h, and h satisfies the relationship: 0.6mm≤h≤2mm.

14. The battery (100) according to any one of claims 1-12, characterized in that, The mounting cover (20) is a one-piece molded metal cover; and / or The mounting cover (20) is constructed of the same metal material as the housing (10).

15. An electrical appliance, characterized in that, include: The battery (100) according to any one of claims 1-14.

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