A battery packaging structure and a battery

Abstract

The application provides a battery packaging structure and a battery, which comprise a shell, a top cover and a pole assembly; the shell is a special-shaped structure, the special-shaped structure comprises a curved structure, the curved structure is provided with an opening, the top cover is matched with the opening and is welded with the shell; the shell is provided with a mounting surface, the mounting surface adopts a sunken step surface, the step surface is close to one end of the shell, and the step surface is provided with a mounting through hole; the pole assembly is mounted on the step surface through the mounting through hole, and the pole of the pole assembly is electrically insulated from the shell; the pole is electrically connected with the positive or negative tab of the core, and correspondingly, the top cover is electrically connected with the negative or positive tab of the core. The shell with the curved structure is closely combined with the matched top cover to form a closed space for mounting the core of the battery, the curved structure can better fit the internal space of the electronic product to improve the space utilization and expand the closed space and improve the capacity of the battery; and the pole assembly hole is mounted on the shell to improve the sealing performance of the battery.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery packaging structure, and also to a battery. Background Technology

[0002] With the rapid development of electronic technology, the application of small and micro smart electronic products such as Bluetooth headsets, smart bracelets, and drones is becoming increasingly widespread. Driven by the design trends of thinness, miniaturization, and wearability, these products generally employ irregular, non-standard shapes in their casing structures. Furthermore, the internal space of these products is compact and complex, requiring the integration of multiple functional components such as control boards, batteries, sensors, and speakers. Therefore, extremely high demands are placed on the utilization rate of internal space.

[0003] As the core energy component, batteries typically employ standard, regular structures such as cylindrical or square shapes. However, these regular battery shapes are difficult to effectively match the internal contours of irregularly shaped casings, often resulting in significant structural gaps between the battery and the casing during assembly, leading to low space utilization. This wasted space not only limits the achievable volume of the battery but also directly affects its energy density and capacity, thus restricting the product's range.

[0004] Therefore, there is an urgent need for a battery that can effectively fit irregularly shaped casings, improve space utilization, and at the same time have good sealing and manufacturability to meet the development needs of small and micro smart electronic products. Utility Model Content

[0005] This application provides a battery packaging structure to address the limitations of existing technologies in improving space utilization and sealing performance of batteries in small and micro electronic products. This application also provides a battery using the aforementioned battery packaging structure.

[0006] This application provides a battery packaging structure, including: a housing, a top cover, and a terminal assembly; The housing has an irregular shape, which includes at least one curved section with an opening. The top cover is adapted to the opening and is welded to the housing through the opening to seal the top cover and form a sealed space for installing the internal core of the battery. The housing is provided with a mounting surface, which is a recessed stepped surface. The stepped surface is located near one end of the housing and is provided with a mounting through hole. The electrode assembly is mounted on the stepped surface through a mounting through hole, and the electrode of the electrode assembly is electrically insulated from the housing; the electrode is electrically connected to the positive or negative electrode tab of the core, and correspondingly, the top cover is electrically connected to the negative or positive electrode tab of the core.

[0007] Optionally, the pole assembly is mounted on the stepped surface by riveting through mounting through holes; The pole post includes a head and a nail post portion; The pole assembly includes a first insulating member disposed at the mounting through hole. The first end of the first insulating member abuts against the head and a central boss protrudes from the first end toward the outside of the housing. The central boss extends toward the outside of the housing through the mounting through hole. A first through hole is provided in the center of the central boss. The pin portion passes through the first through hole, so that the pole is fixed to the housing by the first insulating member.

[0008] Optionally, the pole assembly further includes a second insulating member, which is sleeved on the outside of the central boss and disposed on the outside of the housing.

[0009] Optionally, the pole assembly further includes a metal gasket, which is sleeved on the outside of the nail post and in contact with the surface of the second insulator.

[0010] Optionally, the pole post is a columnar metal nail before installation. The metal nail is used to penetrate the second through hole and the first through hole on the metal gasket and extend to the inside of the housing. The metal nail is riveted to form the head of the pole post at one end near the inside of the housing.

[0011] Optionally, the stepped surface is provided with a first recess for accommodating the second insulating member; and / or, the surface of the second insulating member that contacts the metal gasket is provided with a second recess for accommodating the metal gasket.

[0012] Optionally, the electrode assembly includes an insulating ring; the electrode assembly is mounted on the stepped surface via a mounting through-hole and in conjunction with the insulating ring by a thermo-pressing composite method. The pole post includes a head and a stud portion; the insulating ring is an annular structure, which is fitted onto the stud portion of the pole post so that the insulating ring is located between the head of the pole post and the housing.

[0013] Optionally, the insulating ring is made of polypropylene or modified polypropylene, and the hot-pressing composite installation method specifically involves forming a polypropylene adhesive layer or a modified polypropylene adhesive layer on the insulating ring during the hot-pressing process, thereby achieving a sealed connection.

[0014] Optionally, the bending structure can be any one of an arc-shaped structure, a U-shaped structure, a C-shaped structure, or a wave-shaped structure.

[0015] This application also provides a battery, including the battery packaging structure described in any one of the above.

[0016] Compared with the prior art, this application has the following advantages: This application provides a battery packaging structure, including: a housing, a top cover, and a terminal assembly; the housing is an irregularly shaped structure, the irregularly shaped structure including at least one curved structure, the curved structure having an opening, the top cover being adapted to the opening and welded to the housing through the opening to seal the top cover and the housing, forming a sealed space for installing the internal core of the battery; the housing has a mounting surface, the mounting surface being a recessed stepped surface, the stepped surface near one end of the housing, the stepped surface having a mounting through hole; the terminal assembly is mounted on the stepped surface through the mounting through hole, and the terminal of the terminal assembly is electrically insulated from the housing; the terminal is electrically connected to the positive or negative electrode tab of the core, and correspondingly, the top cover is electrically connected to the negative or positive electrode tab of the core.

[0017] This application achieves a curved battery structure by tightly integrating the top cover with the curved housing. This curved structure allows the battery to better fit the internal space of electronic products, improving space utilization and expanding the sealed space to increase battery capacity. Furthermore, the housing has a mounting surface with a recessed stepped surface near one end of the housing. A mounting through-hole is provided on this stepped surface, through which the terminal assembly is mounted to the housing. This ensures electrical insulation between the terminal assembly's terminals and the housing, and also improves the battery's sealing performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a battery packaging structure (terminal assembly riveted to the housing) provided in an embodiment of this application.

[0019] Figure 2 yes Figure 1 Partial cross-sectional view of the center pole assembly.

[0020] Figure 3 This is a schematic diagram of a battery packaging structure (terminal assembly hot-pressed onto the housing) provided in an embodiment of this application.

[0021] Figure 4 yes Figure 3 The exploded view in the image.

[0022] Figure 5 yes Figure 3 Partial cross-sectional view of the center pole assembly.

[0023] Figure label: 10: Housing; 101: Mounting surface; 1011: Stepped surface; 1012: Mounting through hole; 1013: First recess; 20: Top cover; 30: Pole post assembly; 301: Pole post; 3011: Pin post section; 3012: Head; 302: First insulating component; 3021: Central boss; 3022: First through hole; 303: Second insulating element; 3031: Third through hole; 3032: Second recess; 304: Metal gasket; 3041: Second through hole; 305: Insulating ring; 3051: Fourth through hole. Detailed Implementation

[0024] Many specific details are set forth in the following description to provide a full 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 extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., 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.

[0026] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In related technologies, batteries, as core energy components, typically employ standard, regular structures such as cylindrical or square shapes. However, these regularly shaped batteries struggle to effectively match the internal contours of irregularly shaped casings, often resulting in significant structural gaps between the battery and the casing during assembly, leading to low space utilization. This wasted space not only limits the battery's configurable volume but also directly impacts its energy density and capacity, thus restricting the product's range. Therefore, improving the space utilization of small and micro electronic products while simultaneously enhancing the sealing performance of their batteries has become a pressing technical challenge.

[0028] In view of this, this application provides a battery packaging structure, including: a housing, a top cover, and a terminal assembly; the housing is an irregularly shaped structure, the irregularly shaped structure including at least one curved structure, the curved structure having an opening, the top cover being adapted to the opening and welded to the housing through the opening to seal the top cover and the housing, forming a sealed space for installing the internal core of the battery; the housing has a mounting surface, the mounting surface being a recessed stepped surface, the stepped surface near one end of the housing, the stepped surface having a mounting through hole; the terminal assembly is mounted on the stepped surface through the mounting through hole, and the terminal of the terminal assembly is electrically insulated from the housing; the terminal is electrically connected to the positive or negative electrode tab of the core, and correspondingly, the top cover is electrically connected to the negative or positive electrode tab of the core.

[0029] This application achieves a curved battery structure by tightly integrating a curved top cover with a curved housing. This curved battery structure allows for better fit within the internal space of electronic products, improving space utilization and expanding the sealed space to increase battery capacity. Furthermore, the housing has a mounting surface with a recessed stepped surface near one end of the housing. A mounting through-hole is provided on this stepped surface, through which the terminal assembly is mounted to the housing. This ensures electrical insulation between the terminal assembly's terminals and the housing, and also improves the battery's sealing performance.

[0030] The battery packaging structure provided in this application will now be described in detail with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of a battery packaging structure (terminal assembly riveted to the housing) provided in an embodiment of this application. Figure 2 yes Figure 1 Partial cross-sectional view of the center pole assembly. Figure 3 This is a schematic diagram of a battery packaging structure (terminal assembly hot-pressed onto the housing) provided in an embodiment of this application. Figure 4 yes Figure 3 The exploded view in the image. Figure 5 yes Figure 3 Partial cross-sectional view of the center pole assembly.

[0032] like Figure 1 and Figures 3-4 As shown, this application provides a battery packaging structure, including: a housing 10, a top cover 20, and an electrode assembly 30; the housing 10 is an irregularly shaped structure, the irregularly shaped structure includes at least one curved structure, the curved structure is provided with an opening, the top cover 20 is adapted to the opening, and is welded to the housing 10 through the opening, so that the top cover 20 and the housing 10 are sealed, forming a sealed space for installing the internal core of the battery. The housing has an irregular shape, which, as the name suggests, is irregular in shape, and the irregular shape of the housing is determined by its installation space. In the embodiments of this application, the irregular shape includes at least one curved structure, which includes, but is not limited to, any one of an arc-shaped structure, a U-shaped structure, a C-shaped structure, or a wave-shaped structure.

[0033] The curved structure is disposed on the housing, and the curved structure of the housing includes a bottom and an annular side that surrounds and is fixed to the bottom, with the opening opposite to the bottom. Specifically, the bottom of the housing is a curved structure, and the annular side surrounds and is fixed to the bottom, so the annular side also has a curved structure, and the annular side can be determined according to the curved structure of the bottom. The annular side surrounds the bottom, and the opening is opposite to the bottom, that is, the opening is located at a position opposite to the bottom.

[0034] In this embodiment, the curved structure is described as an arc-shaped structure. When the curved structure is arc-shaped, an entire arc surface is set as an opening. Specifically, the bottom of the curve consists of a first elongated structure and a second elongated structure with a certain curvature, and the bottom of the second elongated structure is set as a mounting surface. The bottoms of the first and second elongated structures are positioned relative to each other as openings, and the width of the opening is greater than the width of their annular side. Moreover, the housing is integrally formed. The curvature, width, and annular side width of the first and second elongated structures can be determined according to specific working conditions, and no specific limitations are imposed here.

[0035] The irregularly shaped structure of the housing includes at least one curved section, and an opening is provided at the location of the curved section. This opening is for mounting the battery core within the sealed space formed by the housing and the top cover. The core enters the sealed space through the opening; therefore, the opening is larger than the core to allow it to enter the sealed space. In other words, the opening can be part of the curved structure or the entire curved structure. In this embodiment, the opening is located on a curved surface of the housing, meaning the entire curved surface of the housing is an opening; therefore, the housing is a curved structure with one side being the opening.

[0036] The top cover 20 has a shape adapted to the opening on the curved structure; therefore, the top cover 20 has a curved structure. "Adapted" means that the shape of the top cover 20 is not arbitrary, but specifically designed to fit with the opening of the curved structure on the housing 10 to achieve a tight connection, seal, or structural alignment. It can be understood that the shape of the top cover 20 can be determined based on the curved structure on the housing 10. Because the curved structure of the housing 10 has openings, the top cover 20 is designed to seal these openings to close the housing 10; that is, the top cover 20 can be tightly fitted to the housing 10 through the openings to seal the housing 10.

[0037] The top cover 20 is welded to the opening to seal it from the housing 10. In other words, the housing can be fixed to the opening using methods such as laser welding or resistance welding, and the top cover 20 seals the opening, thus achieving a complete seal for the housing 10. Because both the top cover 20 and the housing 10 have curved structures, the overall battery structure also adopts this curved structure, which better matches the internal space of small and micro electronic products.

[0038] Because the internal spaces of micro-electronic products are mostly irregularly shaped, traditional cylindrical and prismatic batteries are difficult to fit into these irregular spaces. However, in this embodiment, since both the casing and the top cover are curved, the overall battery structure is also curved, allowing for a better fit into the irregular spaces of these micro-electronic products and achieving "gap-free" assembly. The curved structure can convert "leftover space" within the irregular spaces of these micro-electronic products into usable volume, improving space utilization. Furthermore, the extra space can be used to fill more of the battery's internal components, thereby increasing battery capacity and extending battery life without increasing its overall size.

[0039] In other words, given the fixed irregular space of these miniature electronic products, the curved battery structure can better fit the irregular space of the miniature electronic products, improving its space utilization. It can convert the originally wasted curved space in the irregular space into the energy storage space of the battery, maximizing space utilization and thus increasing the battery capacity to extend the battery life of these miniature electronic products.

[0040] The housing 10 is provided with a mounting surface 101, which is a recessed stepped surface 1011. The stepped surface 1011 is close to one end of the housing 10, and a mounting through hole 1012 is provided on the stepped surface 1011.

[0041] Specifically, the housing 10 is provided with a mounting surface 101, which is a recessed stepped surface 1011, that is, the height of the stepped surface 1011 is lower than the height of the housing 10. The stepped surface 1011 is close to one end of the housing 10, and the mounting through hole 1012 is provided on the stepped surface 1011.

[0042] In other words, a mounting surface 101 is provided on the curved surface opposite the opening on the curved structure of the housing 10. The mounting surface 101 is a recessed stepped surface 1011, meaning that the stepped surface 1011 and the opening are located on two opposite curved surfaces of the curved structure. One curved surface of the curved structure of the housing 10 is an opening, and the other opposite curved surface is provided with a stepped surface 1011, with the stepped surface 1011 close to one end of the housing 10. The height of the stepped surface 1011 is lower than the height of the housing 10, and the stepped surface 1011 is close to one end of the housing 10, so that the stepped surface 1011 and the housing 10 form a recessed stepped structure. Here, there are no specific limitations on the height of the stepped surface 1011 and the height of the housing 10, as long as the operational requirements are met.

[0043] This can be understood as follows: the stepped surface 1011 is located near one end of the housing 10, and the stepped surface 1011 is opposite to the opening. That is, an opening is provided on a curved surface of the housing 10, and a mounting surface 101 is provided on the opposite curved surface. The mounting surface 101 is a stepped surface 1011, located near one end of the housing 10, which is integrally formed. In this embodiment, the stepped surface 1011 is a plane, which can be rectangular, and the rectangular mounting surface 101 is located near one end of the housing 10. There is no specific limitation on the size of the rectangle, as long as it meets the operational requirements. Of course, it is not excluded that the mounting surface 101 can be other structures, such as a square or an ellipse.

[0044] The pole assembly 30 is mounted on the stepped surface 1011 through the mounting through hole 1012, and the pole 301 of the pole assembly 30 is electrically insulated from the housing 10; the pole 301 is electrically connected to the positive or negative electrode tab of the core, and correspondingly, the top cover 20 is electrically connected to the negative or positive electrode tab of the core.

[0045] The mounting through-hole 1012 is provided on the stepped surface 1011 of the mounting surface 101. The mounting through-hole 1012 is for mounting the terminal assembly 30 on the housing 10. That is, because the stepped surface 1011 is close to one end of the housing 10, the terminal assembly 30 is mounted near one end of the housing 10. Mounting the terminal assembly 30 near one end of the housing 10 frees up more central space for the battery cell within the sealed space, facilitating an increase in the active material coating area or the number of electrode layers, thereby improving the utilization rate of the internal space of the battery cell and increasing the battery capacity. Moreover, when the battery as a whole has a curved structure, the battery cell itself may have an asymmetrical layout. Mounting the terminal assembly 30 near one end of the housing 10 can also match the internal tabs, preventing excessive bending or stretching of the tabs and preventing breakage or poor contact.

[0046] When the core is installed in the sealed space, the terminal 301 is electrically connected to either the positive or negative terminal tab of the core, and correspondingly, the top cover 20 is electrically connected to either the negative or positive terminal tab of the core. This can be understood as follows: when the terminal 301 is electrically connected to the positive terminal tab of the core, i.e., the positive terminal tab of the core is electrically connected to the terminal 301, since the terminal 301 is installed on the housing 10, the housing 10 is the positive terminal of the battery's internal power supply. Correspondingly, when the negative terminal tab of the core is electrically connected to the top cover 20, i.e., the top cover 20 is the negative terminal of the battery's internal power supply, thus ensuring that the battery circuit forms a closed loop. Of course, the terminal 301 can also be electrically connected to the negative terminal tab of the core, that is, the negative terminal tab of the core is electrically connected to the terminal 301. Since the terminal 301 is installed on the housing 10, the housing 10 is the negative terminal of the internal power supply of the battery. Correspondingly, the positive terminal tab of the core is electrically connected to the top cover 20, that is, the top cover 20 is the positive terminal of the internal power supply of the battery, so as to ensure that the battery circuit forms a closed loop.

[0047] like Figure 1-2 As shown, the pole assembly 30 is riveted onto the stepped surface 1011 via the mounting through hole 1012; the pole 301 includes a head 3012 and a nail portion 3011; the pole assembly 30 includes a first insulating member 302, which is disposed at the mounting through hole 1012. The first end of the first insulating member 302 abuts against the head 3012, and a central boss 3021 protrudes from the first end toward the outside of the housing 10. The central boss 3021 extends toward the outside of the housing 10 through the mounting through hole 1012, and a first through hole 3022 is provided in the center of the central boss 3021. The nail portion 3011 passes through the first through hole 3022, so that the pole 301 is fixed to the housing 10 via the first insulating member 302.

[0048] Specifically, the pole assembly 30 is riveted to the stepped surface 1011 of the housing 10 via the mounting through hole 1012, and the pole assembly 30 includes a pole 301 and a first insulating member 302. The pole 301 includes a head 3012 and a stud portion 3011, which give the pole 301 an overall T-shaped structure. The riveting refers to passing the pole 301 through the mounting through hole 1012 on the housing 10, and applying axial pressure (such as stamping or press riveting) to cause the riveted section of the pole 301 near the housing 10 to undergo plastic deformation and expand to form the head 3012, which forms an interference fit or mechanical engagement with the edge of the hole in the housing 10, thereby achieving mechanical fixation, electrical connection (or insulation isolation), and sealing between the pole 301 and the housing 10.

[0049] When the first insulating member 302 is installed at the mounting through hole 1012, the first end of the first insulating member 302 abuts against the head 3012, that is, the head 3012 is located below the first end of the first insulating member 302 and abuts against the first end. Furthermore, the first insulating member 302 is provided with a central boss 3021, which protrudes from the first end towards the outside of the housing 10, meaning the central boss 3021 can extend towards the outside of the housing 10 through the mounting through hole 1012.

[0050] The first insulating member 302 is also provided with a first through hole 3022, which extends from the center of the central boss 3021 to the first end, so that the nail part 3011 of the pole post 301 can pass through, so that the pole post 301 is fixed on the housing 10 by the first insulating member 302.

[0051] The first end of the first insulating member 302 is installed inside the housing 10, and the central boss 3021 extends through the mounting through hole 1012. The stud portion 3011 of the pole post 301 is inserted into the first through hole 3022 of the central boss 3021, and the head 3012 of the pole post 301 is flattened by riveting to form the head 3012 of the pole post 301. The head 3012 is located below the first insulating member 302, so that the head 3012 of the pole post 301 is pressed against the surface of the first insulating member 302 from the inside of the mounting through hole 1012. Furthermore, the radial dimension of the head 3012 of the pole post 301 is larger than the diameter of the mounting through hole 1012 to achieve a seal of the housing 10.

[0052] The pole assembly 30 further includes a second insulating member 303, which is sleeved on the outside of the central boss 3021 and disposed on the outside of the housing 10.

[0053] In addition to the aforementioned pole 301 and first insulating member 302, the pole assembly 30 also includes a second insulating member 303. The second insulating member 303 has a circular structure, and a third through hole 3031 is provided at the center of the circular structure, so that the second insulating member 303 has an annular structure. The central boss 3021 extends from the mounting through hole 1012 to the outside of the housing 10. The third through hole 3031 of the second insulating member 303 is fitted onto the outside of the central boss 3021, so that the second insulating member 303 is located on the outside of the housing 10.

[0054] The first end of the first insulating member 302 is installed inside the mounting through hole 1012. The central boss 3021 of the first insulating member 302 covers the stud portion 3011 of the electrode post 301, forming an airtight seal between the first insulating member 302, the stud portion 3011 of the electrode post 301, and the inside of the mounting through hole 1012, preventing electrolyte leakage and moisture intrusion. Furthermore, the first insulating member 302 can also isolate the electrode post 301 from the housing 10, preventing short circuits. The second insulating member 303 is located on the outer surface of the mounting surface 101 on the housing 10. The second insulating member 303 typically functions as a pressure plate, gasket, or sealing cap, providing auxiliary sealing to the housing 10 by pressing the mounting surface 101 on the housing 10, thus improving the overall sealing performance of the housing 10. The second insulating member 303 also has an insulating function, preventing accidental contact of external conductors with the electrode post 301.

[0055] Although both the first insulating component 302 and the second insulating component 303 perform electrical insulation and auxiliary sealing functions, their material performance requirements differ slightly due to differences in their location, stress state, and environment. Therefore, their material selection can be the same or differentiated according to functional requirements. The first insulating sheet and the second insulating component 303 can be polyphenylene sulfide (PPS), polyether ether ketone (PEEK), etc. Here, there are no specific restrictions on the materials of the first insulating component 302 and the second insulating component 303, as long as they meet the working requirements.

[0056] The pole assembly 30 further includes a metal gasket 304, which is sleeved on the outside of the nail post portion 3011 and in contact with the surface of the second insulating member 303.

[0057] The electrode assembly 30, in addition to the electrode 301, the first insulating member 302, and the second insulating member 303, also includes a metal gasket 304. The metal gasket 304 is located above the second insulating member 303, and its radial dimension is smaller than that of the second insulating member 303. The metal gasket 304 has a circular structure, and a second through hole 3041 is provided at its center. The electrode 301 extends from the first through hole 3022 to the outside of the housing 10, and the metal gasket 304 is fitted onto the outside of the pin portion 3011, making contact between the metal gasket 304 and the surface of the lower second insulating member 303.

[0058] The stepped surface 1011 is provided with a first recess 1013 for accommodating the second insulating member 303; and / or, the surface of the second insulating member 303 that is in contact with the metal gasket 304 is provided with a second recess 3032 for accommodating the metal gasket 304.

[0059] As described above, the second insulating member 303 is mounted on the outer surface of the stepped surface 1011 of the housing 10. Therefore, a first recess 1013 is provided on the stepped surface 1011 to accommodate the second insulating member 303, meaning the second insulating member 303 is disposed on the first recess 1013. Furthermore, the metal gasket 304 is located on the upper surface of the second insulating member 303. Specifically, a second recess 3032 is provided on the surface (upper surface) where the second insulating member 303 and the metal gasket 304 meet. The second recess 3032 accommodates the metal gasket 304, meaning the metal gasket 304 is disposed on the second recess 3032. The radial dimensions and depth of the first recess 1013 and the second recess 3032 are not subject to excessive restrictions, as long as they meet operational requirements.

[0060] Before installation, the pole post 301 is a columnar metal nail. The metal nail is used to penetrate the second through hole 3041 and the first through hole 3022 on the metal gasket 304 and extend to the inside of the housing 10. The head 3012 of the pole post 301 is formed by riveting the metal nail to the inside of the housing 10.

[0061] Before installation, the pole post 301 is a columnar metal nail. The metal nail is used to insert into the installation channel formed by the second through hole 3041 and the first through hole 3022, and extends out from the inner side of the housing 10. The metal nail is riveted to form the head 3012 of the pole post 301 near the inner side of the housing 10, so that the head 3012 of the pole post 301 is pressed from the inside of the installation through hole 1012 onto the surface of the first insulating member 302.

[0062] Before installation, the pole post 301 is a columnar metal nail. During installation, the first insulating component 302, the second insulating component 303, and the metal gasket 304 are installed in place. Specifically, the first insulating component 302 is installed inside the mounting through hole 1012; the second insulating component 303 is installed in the first recess 1013, and the metal gasket 304 is installed in the second recess 3032 on the upper surface of the second insulating component 303. At this time, the central boss 3021 on the first insulating component 302 extends through the mounting through hole 1012 and abuts against the upper metal gasket 304. After the first insulating component 302, the second insulating component 303, and the metal gasket 304 are installed in place in the above manner, and the first through hole 3022 and the second through hole 3041 are aligned with each other, i.e., coaxially arranged, the pole post 301 (i.e., the columnar metal nail) is sequentially inserted into the mounting channel formed by the second through hole 3041 and the first through hole 3022, and extends out from the inner side of the housing 10. Furthermore, the metal nail is riveted to form the head 3012 of the pole post 301 near the inner side of the housing 10. The head 3012 of the pole post 301 is located below the first insulating member 302, that is, the head 3012 of the pole post 301 is located inside the mounting through hole 1012, and the head 3012 of the pole post 301 is pressed against the first insulating member 302 from the inside of the mounting through hole 1012.

[0063] The pole assembly includes an insulating ring; the pole assembly 30 is mounted on the stepped surface 1011 via a mounting through hole 1012 and in conjunction with the insulating ring by a thermo-pressing composite method; wherein, the pole 301 includes a head 3012 and a nail portion 3011; the insulating ring 305 is an annular structure, and the annular structure is fitted onto the nail portion 3011 of the pole 301, so that the insulating ring 305 is located between the head 3012 of the pole 301 and the housing 10.

[0064] like Figures 3-5As shown, the electrode assembly 30 can be installed on the housing 10 via riveting or thermoforming, as described above. Specifically, the electrode assembly 30 includes an electrode 301 and an insulating ring 305. The electrode 301 includes a head 3012 and a stud portion 3011. The insulating ring 305 has an annular structure with a fourth through hole 3051 at its center. The stud portion 3011 passes through the fourth through hole 3051, allowing the insulating ring 305 to be fitted onto the stud portion 3011. The insulating ring 305 is located between the head 3012 of the electrode 301 and the housing 10.

[0065] Specifically, a mounting surface 101 is provided at one end of the housing 10. The mounting surface 101 is a recessed stepped surface, and the mounting through hole 1012 is provided on the stepped surface 1011, that is, the mounting through hole 1012 penetrates the stepped surface 1011, thereby allowing the insulating ring 305 to be installed on the inner surface of the stepped surface 1011.

[0066] The insulating ring is made of polypropylene or modified polypropylene. The hot-pressing composite installation method specifically involves forming a polypropylene adhesive layer or modified polypropylene adhesive layer on the insulating ring during the hot-pressing process, thereby achieving a sealed connection. The pole assembly 30 is installed on the housing 10 via the mounting through-hole 1012 using a hot-pressing composite method, specifically by fixing the head 3012 to the insulating ring 305 using a hot-pressing composite method. The hot-pressing composite method uses a hot press head, laser, or high-frequency heating to bring the insulating ring 305, i.e., polypropylene or modified polypropylene, to its melting point; pressure is applied to cause the molten polypropylene or modified polypropylene to flow outwards and adhere to the inner wall of the housing 10; then cooling is performed to form a polypropylene adhesive layer or modified polypropylene adhesive layer, which is then cured to form an integrated sealed structure. In other words, the hot-pressing composite method uses heating and pressure to form a polypropylene adhesive layer or modified polypropylene adhesive layer between the polypropylene and non-metallic materials, thereby achieving integrated sealing, insulation, and fixation.

[0067] The electrode post can be aluminum, and when the electrode post is aluminum, it can be electrically connected to the positive electrode tab of the core. The electrode post can also be copper or a copper alloy, and when the electrode post is copper or a copper alloy, it can be electrically connected to the negative electrode tab of the core. Of course, the electrode post can also be made of other materials, which will not be listed here. The choice between connecting the electrode post 301 to the positive electrode tab or the negative electrode tab of the core can be made based on the characteristics of the specific electrode post material.

[0068] In this embodiment, the housing 10 and the top cover 20 are made of steel; that is, the housing 10 is a rigid body, and the top cover 20 is a steel cover. The steel construction of the housing 10 and top cover 20 provides good sealing, preventing electrolyte leakage and moisture intrusion, thus extending battery life.

[0069] The battery packaging structure also includes an electrolyte injection hole. This injection hole is located on the stepped surface 1011 and is used to inject electrolyte into the battery. After injection, a sealing pin is welded to the injection hole to seal it permanently, ensuring the battery's airtightness and long-term reliability. The technology for this injection hole in battery structures is relatively mature and will not be discussed in detail here.

[0070] The above describes a battery packaging structure provided in this application, including a housing 10, a top cover 20, and a terminal assembly 30. The curved top cover 20 is tightly integrated with the curved housing 10, making the battery as a whole curved structure. This curved battery structure allows for better fit within the internal space of electronic products, improving space utilization and expanding the sealed space to increase battery capacity. Furthermore, the housing 10 has a mounting surface 101, which is a recessed stepped surface 1011 with mounting through holes 1012. The terminal assembly 30 is mounted on the housing 10 through the mounting through holes 1012, ensuring electrical insulation between the terminals 301 of the terminal assembly 30 and the top cover 20, and improving the battery's sealing performance.

[0071] This application also provides a battery, the battery including a battery packaging structure, the battery packaging structure including: a housing 10, a top cover 20, and an electrode assembly 30; the housing 10 has an irregular shape, the irregular shape including at least one curved structure, the curved structure having an opening, the top cover 20 being adapted to the opening and welded to the housing 10 through the opening, so that the top cover 20 and the housing 10 are sealed, forming a sealed space for installing the internal core of the battery; the housing 10 is provided with a mounting surface 101. The mounting surface 101 is a recessed stepped surface 1011, with one end of the stepped surface 1011 near the housing 10. A mounting through hole 1012 is provided on the stepped surface 1011. The pole post assembly 30 is mounted on the stepped surface 1011 through the mounting through hole 1012, and the pole post 301 of the pole post assembly 30 is electrically insulated from the housing 10. The pole post 301 is electrically connected to the positive or negative pole post of the core. Correspondingly, the top cover 20 is electrically connected to the negative or positive pole post of the core.

[0072] The specific implementation of the battery packaging structure in this embodiment is analogous to the battery packaging structure in the above embodiment. For details, please refer to the relevant content in the above embodiment, which will not be elaborated here.

[0073] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0074] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0075] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A battery packaging structure, characterized in that, include: Housing, top cover, and pole assembly; The housing has an irregular shape, which includes at least one curved section with an opening. The top cover is adapted to the opening and is welded to the housing through the opening to seal the top cover and form a sealed space for installing the internal core of the battery. The housing is provided with a mounting surface, which is a recessed stepped surface. The stepped surface is located near one end of the housing and is provided with a mounting through hole. The electrode assembly is mounted on the stepped surface through a mounting through hole, and the electrode of the electrode assembly is electrically insulated from the housing; the electrode is electrically connected to the positive or negative electrode tab of the core, and correspondingly, the top cover is electrically connected to the negative or positive electrode tab of the core.

2. The battery packaging structure according to claim 1, characterized in that, The pole assembly is installed on the stepped surface by riveting through mounting through holes; The pole post includes a head and a nail post portion; The pole assembly includes a first insulating member disposed at the mounting through hole. The first end of the first insulating member abuts against the head and a central boss protrudes from the first end toward the outside of the housing. The central boss extends toward the outside of the housing through the mounting through hole. A first through hole is provided in the center of the central boss. The pin portion passes through the first through hole, so that the pole is fixed to the housing by the first insulating member.

3. The battery packaging structure according to claim 2, characterized in that, The pole assembly also includes a second insulating member, which is sleeved on the outside of the central boss and disposed on the outside of the housing.

4. The battery packaging structure according to claim 3, characterized in that, The pole assembly also includes a metal gasket, which is sleeved on the outside of the nail post and in contact with the surface of the second insulating member.

5. The battery packaging structure according to claim 4, characterized in that, Before installation, the pole is a columnar metal nail. The metal nail is used to penetrate the second through hole and the first through hole on the metal gasket and extend to the inside of the housing. The head of the pole is formed by the riveting method at the end of the metal nail near the inside of the housing.

6. The battery packaging structure according to claim 4, characterized in that, The stepped surface is provided with a first recess for accommodating the second insulating member; and / or, the surface of the second insulating member that contacts the metal gasket is provided with a second recess for accommodating the metal gasket.

7. The battery packaging structure according to claim 1, characterized in that, The pole assembly includes an insulating ring; the pole assembly is installed on the stepped surface by means of a hot-press composite method through a mounting through hole and in conjunction with the insulating ring. The pole post includes a head and a stud portion; the insulating ring is an annular structure, which is fitted onto the stud portion of the pole post so that the insulating ring is located between the head of the pole post and the housing.

8. The battery packaging structure according to claim 7, characterized in that, The insulating ring is made of polypropylene or modified polypropylene. The hot-pressing composite installation method specifically involves forming a polypropylene adhesive layer or a modified polypropylene adhesive layer on the insulating ring during the hot-pressing process, thereby achieving a sealed connection.

9. The battery packaging structure according to claim 1, characterized in that, The bending structure can be any one of an arc-shaped structure, a U-shaped structure, a C-shaped structure, or a wave-shaped structure.

10. A battery, characterized in that, Includes the battery packaging structure according to any one of claims 1-9.

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