Battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery and electric equipment, and the battery comprises a shell which is provided with an accommodating cavity and is provided with a first through hole; the battery cell is positioned in the accommodating cavity; the conductive piece is arranged in the first through hole in a penetrating manner, the conductive piece is provided with a connecting part and a stopping part, the connecting part is positioned in the accommodating cavity and is electrically connected with the tab of the battery cell, and the stopping part protrudes out of the outer side of the shell and is propped against the outer surface of the shell; the conductive piece can be used as a battery pole column and also can be used as an adapter piece, so that the use of the adapter piece is saved, the production and manufacturing cost is effectively reduced, the battery assembling process is simplified, and the assembling efficiency and the production yield are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of batteries, specifically relating to batteries and electrical equipment. Background Technology

[0002] Lithium-ion batteries, as a new type of rechargeable battery, have advantages such as high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and environmental friendliness. They have broad application prospects in portable electrical appliances, power tools, large-scale energy storage, and electric transportation power supplies.

[0003] In existing technologies, the tabs of the battery cell are typically electrically connected to the battery terminals via adapter plates. However, this connection method involves multiple connecting components, making the assembly process cumbersome. This not only increases manufacturing costs but also negatively impacts product yield and production efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing batteries and electrical equipment that solve the technical problems of complex connection methods between the battery cell tabs and battery terminals via adapter plates, which increases manufacturing costs and reduces yield and production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a battery, comprising:

[0007] The outer shell has a receiving cavity, and a first through hole is provided on the outer shell;

[0008] The battery cell is located within the accommodating cavity;

[0009] A conductive element is inserted into the first through hole. The conductive element has a connecting part and a stop part. The connecting part is located in the accommodating cavity and is electrically connected to the electrode tab of the battery cell. The stop part protrudes from the outside of the housing and abuts against the outer surface of the housing.

[0010] In some embodiments, the conductive element further has a protrusion disposed on the connecting portion. The protrusion is a hollow structure. The connecting portion is provided with a second through hole communicating with the hollow structure. One end of the protrusion away from the connecting portion passes through the first through hole. The protrusion partially protrudes out of the outer side of the housing to form the stop portion.

[0011] In some embodiments, the protrusion includes a first protrusion and a second protrusion. The second protrusion is disposed on the side of the connection portion away from the tab of the battery cell and connects the connection portion and the first protrusion. The first protrusion passes through the first through hole and partially protrudes from the outside of the housing to form the stop portion.

[0012] The first protrusion and the second protrusion form a stepped structure. The width of the first protrusion is smaller than the width of the second protrusion. The second protrusion has a stepped surface that abuts against the inner surface of the outer shell.

[0013] In some embodiments, the corner where the sidewall of the second protrusion connects to the stepped surface is arc-shaped.

[0014] In some embodiments, the width of the stop portion is greater than the width at the corner of the second protrusion.

[0015] In some embodiments, the connecting portion is provided with a storage groove, and the electrode tabs of the battery cell are at least partially accommodated in the storage groove.

[0016] In some embodiments, an insulating seal is further included, the insulating seal comprising a first insulating seal portion and a second insulating seal portion, the second insulating seal portion extending from the bottom edge of the first insulating seal portion in a direction away from the first insulating seal portion, the first insulating seal portion being sleeved on the protrusion, the shape of the first insulating seal portion corresponding to the shape of the protrusion, and one end of the first insulating seal portion away from the second insulating seal portion passing through the first through hole and disposed between the stop portion and the outer surface of the housing, the second insulating seal portion at least partially covering the connecting portion.

[0017] In some embodiments, the second insulating seal covers the end face of the battery cell, and one end of the second insulating seal away from the first insulating seal extends between the side wall of the battery cell and the side wall of the housing.

[0018] In some embodiments, the housing includes a shell and a top cover, the top cover fastening to an opening in the shell, and the first through hole being disposed in the top cover;

[0019] Alternatively, the first through hole is provided on the bottom wall of the housing, and the thickness of the bottom wall of the housing is greater than or equal to the thickness of the side wall of the housing.

[0020] Secondly, this utility model provides an electrical device, including the battery described in the above embodiment.

[0021] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0022] This utility model's battery, through the combined use of a casing, a cell, and a conductive component, features a connecting portion and a stop portion. The connecting portion is located within the accommodating cavity and is electrically connected to the cell's tabs via it. The stop portion protrudes from the outer side of the casing and is electrically connected to an external power source via it. This effectively allows the conductive component to function as both a battery terminal and an adapter, saving the use of adapters, effectively reducing manufacturing costs, simplifying the battery conversion process, and improving conversion efficiency and production yield. Simultaneously, by saving the use of adapters, it also improves the internal space utilization of the battery, reduces battery weight, and increases energy density. Furthermore, the stop portion abuts against the outer surface of the casing, effectively improving the stability of the connection between the conductive component and the casing, preventing the conductive component from detaching, thereby enhancing the battery's structural stability.

[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] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the battery of this utility model.

[0026] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0027] Figure 3 This is another structural schematic diagram of the battery of this utility model.

[0028] Figure 4 This is a schematic diagram of the conductive component of this utility model before stamping.

[0029] Figure 5 This is a schematic diagram of the structure of the battery cell of this utility model.

[0030] Figure 6 This is a schematic diagram of the structure of the shell of this utility model.

[0031] The reference numerals in the attached figures are explained as follows:

[0032] 100. Battery;

[0033] 10. Outer shell; 11. Casing; 111. Bottom wall of the casing; 112. Side wall of the casing; 12. Top cover;

[0034] 20. First through hole;

[0035] 30. Battery cell; 31. First tab; 32. Second tab;

[0036] 40. Conductive component; 41. Connecting part; 411. Second through hole; 412. Receiving groove; 42. Stop part; 43. Protrusion; 431. First protrusion; 432. Second protrusion; 4321. Step surface; 4322. Side wall of the second protrusion; 4323. Corner;

[0037] 50. Insulating seal; 51. First insulating seal; 52. Second insulating seal;

[0038] a. Width of the first protrusion; b. Width of the second protrusion; c. Width of the stop; d. Thickness of the bottom wall of the housing; e. Thickness of the side wall of the housing; f. Width at the corner of the second protrusion; g. Height of the first protrusion before being stamped. Detailed Implementation

[0039] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The following will be combined with the appendix Figures 1-6The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0043] The electrical equipment of this utility model embodiment includes a battery 100. The electrical equipment can be automobiles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Automobiles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended 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, and electric planers, etc. This application embodiment does not impose any special limitations on the above-mentioned electrical equipment.

[0044] Please see Figures 1-6 The battery 100 of this utility model embodiment includes a housing 10, a battery cell 30, and a conductive element 40; the housing 10 has a receiving cavity and a first through hole 20 is provided on the housing 10; the battery cell 30 is located in the receiving cavity; the conductive element 40 passes through the first through hole 20 and has a connecting part 41 and a stop part 42. The connecting part 41 is located in the receiving cavity and is electrically connected to the tab of the battery cell 30, and the stop part 42 protrudes from the outside of the housing 10 and abuts against the outer surface of the housing 10.

[0045] Compared with the prior art, the battery 100 of this utility model embodiment, through the cooperative use of the outer shell 10, the battery cell 30, and the conductive element 40, has a connecting portion 41 and a stop portion 42. The connecting portion 41 is located in the accommodating cavity, and the conductive element 40 is electrically connected to the electrode tab of the battery cell 30 through the connecting portion 41. The stop portion 42 protrudes from the outer side of the outer shell 10, and the conductive element 40 is electrically connected to an external power source through the stop portion 42. This effectively allows the conductive element 40 to serve as both a battery 100 terminal and an adapter piece, saving the use of adapter pieces, effectively reducing manufacturing costs, simplifying the battery 100 conversion process, and improving conversion efficiency and production yield. At the same time, by saving the use of adapter pieces, the internal space utilization of the battery 100 can be improved, the weight of the battery 100 can be reduced, and the energy density of the battery 100 can be increased. In addition, the stop portion 42 abuts against the outer surface of the outer shell 10, effectively improving the stability of the connection between the conductive element 40 and the outer shell 10, preventing the conductive element 40 from falling off, thereby improving the structural stability of the battery 100.

[0046] Please see Figures 1-4 In some embodiments, the conductive element 40 further has a protrusion 43, which is disposed on the connecting portion 41. The protrusion 43 is a hollow structure, and the connecting portion 41 is provided with a second through hole 411 communicating with the hollow structure. One end of the protrusion 43 away from the connecting portion 41 passes through the first through hole 20, and a portion of the protrusion 43 protrudes out of the outer side of the outer casing 10 to form a stop portion 42. By providing the protrusion 43, which is disposed on the connecting portion 41, with one end of the protrusion 43 away from the connecting portion 41 passing through the first through hole 20, and a portion of the protrusion 43 protruding out of the outer side of the outer casing 10 to form a stop portion 42, the conductive element 40 can effectively serve as both a battery 100 terminal and an adapter piece, saving the use of adapter pieces, effectively reducing manufacturing costs, simplifying the battery 100 conversion process, and improving conversion efficiency and production yield. Meanwhile, the formation of the stop portion 42 effectively allows the protrusion 43 to be positioned on the outside of the outer casing 10 after passing through the first through hole 20, thereby improving the stability of the connection between the conductive component 40 and the outer casing 10, preventing the conductive component 40 from falling off, and thus improving the structural stability of the battery 100. In addition, the protrusion 43 is a hollow structure, and the connecting portion 41 is provided with a second through hole 411 communicating with the hollow structure, effectively reducing the weight of the protrusion 43, thereby reducing the weight of the battery 100 and increasing the energy density of the battery 100.

[0047] It is understandable that the protrusion 43 and the connecting part 41 can be an integrally formed structure, that is, the protrusion 43 and the connecting part 41 are a single component. Of course, the protrusion 43 and the connecting part 41 can also be separate structures, that is, the protrusion 43 and the connecting part 41 are two separate components. The protrusion 43 can be connected to the connecting part 41 by welding or by using conductive adhesive.

[0048] Please see Figures 1-4 In some embodiments, the protrusion 43 includes a first protrusion 431 and a second protrusion 432. The second protrusion 432 is disposed on the side of the connecting portion 41 away from the tab of the cell 30 and connects the connecting portion 41 and the first protrusion 431. The first protrusion 431 passes through the first through hole 20, and a portion of the first protrusion 431 protrudes outward from the outer side of the outer casing 10 to form a stop portion 42. Through the cooperative use of the first protrusion 431 and the second protrusion 432, the first protrusion 431 is connected to the connecting portion 41 through the second protrusion 432. The first protrusion 431 passes through the first through hole 20, and a portion of the first protrusion 431 protrudes outward from the outer side of the outer casing 10 to form a stop portion 42. This effectively ensures that after the first protrusion 431 passes through the first through hole 20, it can form a limit on the outer side of the outer casing 10, thereby improving the stability of the connection between the conductive component 40 and the outer casing 10, preventing the conductive component 40 from falling off, and thus improving the structural stability of the battery 100.

[0049] Furthermore, the first protrusion 431 and the second protrusion 432 form a stepped structure. The width a of the first protrusion 431 is smaller than the width b of the second protrusion 432. The second protrusion 432 has a stepped surface 4321, which abuts against the inner surface of the outer casing 10. Through the cooperative use of the first protrusion 431 and the second protrusion 432, the first protrusion 431 and the second protrusion 432 form a stepped structure, which effectively enhances the structural strength of the protrusion 43. At the same time, the width a of the first protrusion 431 is smaller than that of the second protrusion 432. The stepped surface 4321 of the second protrusion 432 abuts against the inner surface of the outer shell 10, which effectively enables the first protrusion 431 to play a guiding role, ensuring that the conductive component 40 can be accurately aligned with the first through hole 20 of the outer shell 10 during the assembly process. The stepped surface 4321 of the second protrusion 432 provides a further positioning reference, enabling the conductive component 40 to be accurately installed in the predetermined position, thereby reducing the assembly difficulty of the conductive component 40 and improving the accuracy of the conductive component 40 assembly.

[0050] Furthermore, the stop portion 42 abuts against the outer surface of the housing 10, and the stepped surface 4321 of the second protrusion 432 abuts against the inner surface of the housing 10. Through the cooperative use of the stop portion 42 and the stepped surface 4321 of the second protrusion 432, the stability of the connection between the conductive component 40 and the housing 10 is effectively enhanced, preventing the conductive component 40 from loosening or falling off due to external forces such as vibration and impact, thereby extending the service life of the battery 100.

[0051] It is understandable that the first protrusion 431 and the second protrusion 432 are integrally formed structures, that is, the first protrusion 431 and the second protrusion 432 are one component. Of course, the first protrusion 431 and the second protrusion 432 can also be separate structures, that is, the first protrusion 431 and the second protrusion 432 are two separate components. The first protrusion 431 can be connected to the second protrusion 432 by welding or conductive adhesive.

[0052] Please see Figures 1-3 In some embodiments, the corner 4323 where the sidewall of the second protrusion 432 connects to the stepped surface 4321 is arc-shaped. By making the corner 4323 arc-shaped, the transition between the sidewall of the second protrusion 432 and the stepped surface 4321 is effectively made smoother, reducing the wind direction at which the corner 4323 may collide with the internal components or outer casing 10 of the battery 100, thereby improving the overall stability and safety of the battery 100 structure. It also further reduces potential failures such as internal short circuits and electrolyte leakage that may be caused by collisions, thereby extending the service life of the battery 100.

[0053] Please see Figures 1-3 In some embodiments, the width c of the stop portion 42 is greater than the width f of the corner 4323 of the second protrusion 432. By setting the width c of the stop portion 42 to be greater than the width f of the corner 4323 of the second protrusion 432, the width c of the stop portion 42 is effectively increased, thereby increasing the surface area of ​​the stop portion 42 in contact with the external power source, and thus improving the electrical connection effect between the stop portion 42 and the external power source. In addition, since the width c of the stop portion 42 is greater than the width f of the corner 4323 of the second protrusion 432, the width of the conductive element 40 is effectively distributed with a wider top and a narrower bottom, thereby effectively enhancing the connection strength between the conductive element 40 and the top cover 12. The wider stop portion 42 can provide better support, help disperse stress, and prevent the conductive element 40 from loosening or deforming under stress, thereby improving the reliability and durability of the entire battery 100 assembly.

[0054] Please see Figures 1-4 In some embodiments, a receiving groove 412 is provided on the connecting portion 41, and at least part of the tabs of the battery cell 30 are accommodated in the receiving groove 412. By providing the receiving groove 412 on the connecting portion 41 to accommodate at least part of the tabs of the battery cell 30, the receiving groove 412 effectively provides accommodating space for the tabs of the battery cell 30, optimizes the internal layout of the battery 100, reduces wasted space inside the battery 100, improves the space utilization rate inside the battery 100, and increases the energy density of the battery 100. In addition, the providing of the receiving groove 412 effectively improves the structural strength of the connecting portion 41, thereby enhancing the structural stability and durability of the conductive component 40.

[0055] Please see Figures 1-4 In some embodiments, the battery 100 further includes an insulating seal 50. The insulating seal 50 is positioned between the housing 10 and the conductive element 40, effectively isolating direct contact between the top cover 12 and the conductive element 40, thereby avoiding the risk of short circuits. Simultaneously, the insulating seal 50 also ensures a tight seal between the conductive element 40 and the housing 10, effectively preventing electrolyte leakage or the entry of moisture, dust, or other contaminants into the battery 100, thereby improving the safety of the battery 100.

[0056] In some embodiments, the thickness of the insulating seal 50 is 0.2–1 mm. The thickness of the insulating seal 50 must be neither too thick nor too thin. If the insulating seal 50 is too thick (greater than 1 mm), it may increase the overall volume and weight, reducing the energy density of the battery 100. If the insulating seal 50 is too thin (less than 0.2 mm), it is prone to cracking during stamping, reducing its insulation and sealing effectiveness and increasing the risk of short circuits, electrolyte leakage, or the entry of moisture, dust, or other contaminants into the battery 100. Therefore, setting the thickness of the insulating seal 50 to 0.2–1 mm is appropriate, preventing cracking during stamping, improving its insulation and sealing effectiveness, and ensuring the energy density of the battery 100.

[0057] Specifically, the thickness of the insulating seal 50 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 1 mm, but is not limited to the listed values; other values ​​within the range are also applicable.

[0058] Please see Figures 1-4 In some embodiments, the insulating seal 50 includes a first insulating seal portion 51 and a second insulating seal portion 52. The second insulating seal portion 52 extends from the bottom edge of the first insulating seal portion 51 in a direction away from the first insulating seal portion 51. The first insulating seal portion 51 is sleeved on the protrusion 43. The shape of the first insulating seal portion 51 corresponds to the shape of the protrusion 43. One end of the first insulating seal portion 51 away from the second insulating seal portion 52 passes through the first through hole 20 and is disposed between the stop portion 42 and the outer surface of the housing 10. The second insulating seal portion 52 at least partially covers the connecting portion 41.

[0059] With the cooperation of the first insulating sealing part 51 and the second insulating sealing part 52, the first insulating sealing part 51 is sleeved on the protrusion 43. The first insulating sealing part 51 can effectively isolate the direct contact between the protrusion 43 and the outer casing 10, thereby avoiding the risk of short circuit. Moreover, the shape of the first insulating sealing part 51 corresponds to the shape of the protrusion 43, effectively improving the compatibility between the first insulating sealing part 51 and the protrusion 43, preventing moisture, dust or other contaminants from entering the device through the gap between the protrusion 43 and the outer casing 10, thereby improving the sealing effect between the conductive component 40 and the outer casing 10. The end of the first insulating sealing part 51 facing away from the second insulating sealing part 52 passes through the first through hole 20 and is disposed between the stop part 42 and the outer surface of the outer casing 10. This structural arrangement not only enhances the connection stability between the insulating sealing part 50 and the outer casing 10, but also further prevents external substances from entering the battery 100 through the first through hole 20, thereby improving the safety of the battery 100. The second insulating seal 52 at least partially covers the connecting portion 41, effectively enabling the second insulating seal 52 to isolate the connecting portion 41 and the outer casing 10, preventing accidental contact between the connecting portion 41 and the outer casing 10 from causing a short circuit in the battery 100, and further improving the safety and reliability of the battery 100.

[0060] It is understood that the first insulating sealing part 51 and the second insulating sealing part 52 are integrally formed structures, that is, the first insulating sealing part 51 and the second insulating sealing part 52 are a single component.

[0061] Please see Figures 1-3 In some embodiments, the second insulating seal 52 covers the end face of the battery cell 30, and one end of the second insulating seal 52 away from the first insulating seal 51 extends between the side wall of the battery cell 30 and the side wall of the outer casing 10. By providing the second insulating seal 52, the end face of the battery cell 30 is effectively insulated from the outer casing 10, preventing accidental contact between the end face of the battery cell 30 and the outer casing 10, thus avoiding a short circuit in the battery 100. Furthermore, the extension of the second insulating seal 52 away from the first insulating seal 51 between the side wall of the battery cell 30 and the side wall of the outer casing 10 not only further improves the insulation effect between the battery cell 30 and the outer casing 10, preventing short circuits caused by contact between the battery cell 30 and the outer casing 10, but also limits the position of the battery cell 30, ensuring its stability within the battery 100 and reducing shaking caused by external factors such as vibration or impact, thereby extending the service life and safety of the battery 100.

[0062] Please see Figures 1-4In some embodiments, a stamping process is used to stamp the conductive element 40 passing through the first through hole 20. After stamping, the portion of the first protrusion 431 protruding outward from the outer side of the housing 10 extends radially along the first through hole 20 to form a stop portion 42. Simultaneously, the portion of the first insulating sealing portion 51 protruding outward from the outer side of the housing 10 is rolled between the stop portion 42 and the outer surface of the housing 10. On the other hand, the second protrusion 432 presses against the inner surface of the housing 10, while the portion of the first insulating sealing portion 51 is rolled between the stepped surface 4321 of the second protrusion 432 and the inner surface of the housing 10. By using a stamping process to stamp the conductive element 40 passing through the first through hole 20, the stamping process is suitable for mass production, facilitates mechanization and automation, and can significantly improve production efficiency. At the same time, the formation of the stop portion 42 increases the connection strength between the housing 10 and the conductive element 40, improving the stability of the overall structure. The compressed second protrusion 432 and the rolled first insulating seal 51 further enhance the structural stability. Furthermore, the rolled first insulating seal 51 fills the gap between the stop 42 and the outer surface of the housing 10, and the gap between the stepped surface 4321 of the second protrusion 432 and the inner surface of the housing 10, thereby improving sealing performance. This helps prevent electrolyte leakage or prevents moisture, dust, or other contaminants from entering the battery 100, thus improving the safety of the battery 100.

[0063] Please see Figure 4In some embodiments, the height g of the first protrusion 431 before stamping is 4–15 mm. By setting the height g of the first protrusion 431 before stamping, it is important that g is neither too large nor too small. When the height g of the first protrusion 431 before stamping is too large, i.e., greater than 15 mm, the material allowance provided by the first protrusion 431 for the stamping process is excessive, leading to an increase in the weight of the cell 30 and a decrease in the energy density of the battery 100. Furthermore, an excessively large and high first protrusion 431 is more susceptible to uneven forces during stamping, resulting in deformation or twisting, which may cause unevenness of the sealing surface of the first protrusion 431, thus affecting the sealing effect. When the height g of the first protrusion 431 before stamping is too small, i.e., less than 4 mm, the material allowance provided by the first protrusion 431 for the stamping process is insufficient. Consequently, the width c of the stop portion 42 formed after stamping is inadequate, potentially leading to an insufficient contact area between the stop portion 42 and the outer casing 10 or the first insulating sealing portion 51. This not only reduces the connection strength between the conductive component 40 and the outer casing 10 but also reduces the sealing effect of the battery 100. Therefore, the height g of the first protrusion 431 before stamping is set to 4–15 mm. This not only ensures that the first protrusion 431 provides sufficient material allowance for the stamping process, guaranteeing the connection strength between the conductive component 40 and the outer casing 10 and improving the sealing effect of the battery 100, but also allows the first protrusion 431 to be subjected to more uniform force during stamping, reducing the risk of deformation or twisting due to uneven material distribution. This helps ensure that the shape and size of the protrusion 43 and the stop 42 meet the design requirements, thereby improving the precision and quality of stamping.

[0064] Specifically, the height g of the first protrusion 431 before being stamped is 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm, but is not limited to the listed values. Other values ​​within the range are also applicable.

[0065] Please see Figures 1-4In some embodiments, the outer casing 10 includes a housing 11 and a top cover 12. The top cover 12 engages with the opening of the housing 11, and a first through hole 20 is provided in the top cover 12; or, the first through hole 20 is provided in the bottom wall 111 of the housing, and the thickness d of the bottom wall 111 of the housing 11 is greater than or equal to the thickness e of the side wall 112 of the housing 11. Through the cooperation of the housing 11 and the top cover 12, the top cover 12 engages with the opening of the housing 11, forming a space for accommodating the battery cell 30. The first through hole 20 can be provided in the top cover 12 or in the bottom wall 111 of the housing. When the first through hole 20 is provided in the top cover 12, the conductive element 40 and the insulating sealing element 50 are integrated on the top cover 12, effectively eliminating the need for additional processing of the housing 11 during assembly, simplifying the assembly process, improving assembly efficiency, and facilitating subsequent maintenance of the battery 100 or component replacement, effectively reducing maintenance difficulty and cost. When the first through hole 20 is provided on the bottom wall 111 of the housing, the thickness of the bottom wall 111 of the housing is greater than or equal to that of the side wall 112 of the housing. The thicker bottom wall can provide better structural support, so that when the conductive component 40 and the insulating seal 50 are assembled onto the bottom wall 111 of the housing, the bottom wall 111 of the housing can better resist deformation and damage, thereby improving the safety and durability of the battery 100.

[0066] Please see Figure 2 In some embodiments, the thickness d of the bottom wall 111 of the housing 11 is 0.2–1 mm. The thickness d of the bottom wall 111 of the housing 11 cannot be too thick or too thin. When the thickness d of the bottom wall 111 of the housing 11 is too thick, i.e., greater than 1 mm, the housing 11 is heavier, increasing the weight of the battery 100. Furthermore, a thicker bottom wall 111 will compress the space of the accommodating cavity, reducing the space utilization rate inside the battery 100 and thus lowering the energy density of the battery 100. When the thickness d of the bottom wall 111 of the housing 11 is too thin, i.e., less than 0.2 mm, the structural strength of the housing 11 is insufficient, making it prone to deformation or breakage under external impact. Therefore, when the thickness d of the bottom wall 111 of the casing 11 is 0.2 to 1 mm, it can not only ensure the structural strength of the casing 11 and prevent the casing 11 from deforming or breaking when subjected to external impact, but also reduce the weight of the battery 100, improve the internal space utilization of the battery 100, and increase the energy density of the battery 100.

[0067] Specifically, the thickness d of the bottom wall 111 of the housing 11 is 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, but is not limited to the listed values. Other values ​​within the range are also applicable.

[0068] Please see Figure 2In some embodiments, the thickness e of the sidewall 112 of the housing 11 is 0.2–0.6 mm. The thickness e of the sidewall 112 of the housing 11 cannot be too thick or too thin. When the sidewall 112 of the housing is too thick, i.e., the thickness e is greater than 0.6 mm, the housing 11 is heavier, increasing the weight of the battery 100. Furthermore, a thicker sidewall 112 will compress the space of the accommodating cavity, reducing the space utilization rate inside the battery 100 and thus lowering the energy density of the battery 100. When the thickness e of the sidewall 112 of the housing is too thin, i.e., less than 0.2 mm, the structural strength of the housing 11 is insufficient, making it prone to deformation or damage when subjected to external impact. Therefore, when the thickness e of the side wall 112 of the housing 11 is 0.2 to 0.6 mm, it can not only ensure the structural strength of the housing 11 and prevent the housing 11 from deforming or breaking when subjected to external impact, but also reduce the weight of the battery 100, improve the internal space utilization of the battery 100, and increase the energy density of the battery 100.

[0069] Specifically, the thickness e of the sidewall 112 of the housing 11 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm, but is not limited to the listed values; other values ​​within the range are also applicable.

[0070] Please see Figures 1-6 In some embodiments, two first through holes 20 and two conductive elements 40 are provided, with the two first through holes 20 arranged side by side on the top cover 12; or, the two first through holes 20 are arranged side by side on the bottom wall 111 of the housing. The two first through holes 20 are provided in a one-to-one correspondence with the two conductive elements 40, and an insulating seal 50 is provided between each conductive element 40 and the top cover 12 or the housing 11.

[0071] The battery cell 30 includes a first tab 31 and a second tab 32, which are located on the same side of the cell 30. The first tab 31 and the second tab 32 have opposite polarities. One of the two conductive elements 40 is electrically connected to the first tab 31, and the other of the two conductive elements 40 is electrically connected to the second tab 32. This structural arrangement effectively allows the positive and negative terminals of the battery 100 to be arranged side-by-side on the top cover 12 or the bottom wall 111 of the casing, facilitating the connection of external circuits or devices to the battery 100.

[0072] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A battery, characterized in that, include: The outer shell (10) has a receiving cavity, and the outer shell (10) is provided with a first through hole (20); The battery cell (30) is located within the accommodating cavity; A conductive element (40) is inserted into the first through hole (20). The conductive element (40) has a connecting part (41) and a stop part (42). The connecting part (41) is located in the accommodating cavity and is electrically connected to the electrode tab of the battery cell (30). The stop part (42) protrudes from the outside of the outer shell (10) and abuts against the outer surface of the outer shell (10).

2. The battery as described in claim 1, characterized in that: The conductive element (40) also has a protrusion (43) which is disposed on the connecting part (41). The protrusion (43) is a hollow structure. The connecting part (41) is provided with a second through hole (411) communicating with the hollow structure. One end of the protrusion (43) away from the connecting part (41) passes through the first through hole (20). The protrusion (43) partially protrudes out of the outer side of the outer shell (10) to form the stop (42).

3. The battery as described in claim 2, characterized in that: The protrusion (43) includes a first protrusion (431) and a second protrusion (432). The second protrusion (432) is disposed on the side of the connecting part (41) away from the electrode tab of the battery cell (30) and connects the connecting part (41) and the first protrusion (431). The first protrusion (431) passes through the first through hole (20). The first protrusion (431) partially protrudes out of the outer side of the outer shell (10) to form the stop (42). The first protrusion (431) and the second protrusion (432) form a stepped structure. The width (a) of the first protrusion (431) is smaller than the width (b) of the second protrusion (432). The second protrusion (432) has a stepped surface (4321) that abuts against the inner surface of the outer shell (10).

4. The battery as described in claim 3, characterized in that: The corner (4323) where the sidewall (4322) of the second protrusion (432) connects to the stepped surface (4321) is arc-shaped.

5. The battery as described in claim 4, characterized in that: The width (c) of the stop (42) is greater than the width (f) of the corner (4323) of the second protrusion (432).

6. The battery according to any one of claims 1 to 5, characterized in that: The connecting part (41) is provided with a storage groove (412), and the tabs of the battery cell (30) are at least partially housed in the storage groove (412).

7. The battery as described in any one of claims 2 to 5, characterized in that: It also includes an insulating seal (50), which includes a first insulating seal portion (51) and a second insulating seal portion (52). The second insulating seal portion (52) extends from the bottom edge of the first insulating seal portion (51) in a direction away from the first insulating seal portion (51). The first insulating seal portion (51) is fitted onto the protrusion (43). The shape of the first insulating seal portion (51) corresponds to the shape of the protrusion (43). The end of the first insulating seal portion (51) away from the second insulating seal portion (52) passes through the first through hole (20) and is disposed between the stop portion (42) and the outer surface of the housing (10). The second insulating seal portion (52) at least partially covers the connecting portion (41).

8. The battery as described in claim 7, characterized in that: The second insulating seal (52) covers the end face of the cell (30), and one end of the second insulating seal (52) away from the first insulating seal (51) extends between the side wall of the cell (30) and the side wall of the outer casing (10).

9. The battery as claimed in claim 1, characterized in that: The outer casing (10) includes a housing (11) and a top cover (12), the top cover (12) fastens to the opening of the housing (11), and the first through hole (20) is provided in the top cover (12); Alternatively, the first through hole (20) is provided on the bottom wall (111) of the housing (11), and the thickness (d) of the bottom wall (111) of the housing (11) is greater than or equal to the thickness (e) of the side wall (112) of the housing (11).

10. An electrical appliance, characterized in that: Includes the battery as described in any one of claims 1 to 9.

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