Integrated battery frame and battery

Abstract

An integrated battery frame (200) and a battery. The integrated battery frame (200) comprises: a metal frame (1), the metal frame (1) comprising a rectangular frame having an accommodating space, and a terminal post mounting hole (15), an explosion-proof valve hole (16), and a liquid injection hole (17) disposed on the rectangular frame; a terminal post (2), the terminal post (2) comprising a substrate (21) arranged in the metal frame, and a first end (22) arranged on a side of the substrate (21) and extending to the exterior of the metal frame via the terminal post mounting hole (15); a mounting assembly (3), the mounting assembly (3) fixing and sealing the terminal post (2) at the terminal post mounting hole (15) of the metal frame; an explosion-proof valve (4); and a sealing assembly (5). Compared with conventional battery cover plate assemblies, the integrated battery frame (200), when applied to an ultra-thin battery, not only improves the structural strength and safety of the battery, but also optimizes space utilization, simplifies the assembly process, and enhances the energy density of the battery.

Description

An integrated battery frame and battery Technical Field

[0001] This invention belongs to the field of battery manufacturing technology, specifically relating to an integrated battery frame and battery. Background Technology

[0002] Compared with traditional batteries, ultra-thin batteries have significant advantages in terms of increased energy density, improved charging and discharging efficiency, increased material utilization, and reduced production costs.

[0003] Existing battery structures include a positive electrode, a negative electrode, a separator, a cover assembly, and a casing. The battery cells, made from the positive electrode, negative electrode, and separator, are placed into the casing, which is then sealed with the cover assembly. However, battery casings are typically made by stamping steel sheets. Due to limitations in processing technology, the width and depth of the stamped steel sheet are significantly restricted, and the thickness of the stamped casing is uneven. To ensure the overall support and mechanical strength of the battery, traditional battery structures cannot meet the dimensional design requirements of ultra-thin batteries.

[0004] Summary of the Invention

[0005] To address the issue that the size of batteries with traditional steel casing covers cannot meet the design requirements for ultra-thin batteries, an integrated battery frame and battery are provided.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] On one hand, the present invention provides an integrated battery frame, including

[0008] A metal frame, comprising a rectangular frame with a receiving space and pole mounting holes, explosion-proof valve holes and liquid injection holes disposed on the rectangular frame;

[0009] The electrode post includes a substrate disposed within the metal frame and a first end disposed on one side of the substrate and extending to the outside of the metal frame through the electrode post mounting hole;

[0010] The mounting assembly secures and seals the pole to the pole mounting hole in the metal frame;

[0011] An explosion-proof valve is disposed within the explosion-proof valve orifice;

[0012] A sealing assembly is disposed within the injection hole.

[0013] Optionally, the rectangular frame includes a first border, a second border, a third border, and a fourth border connected end to end in sequence, with the first border located above the second border, the third border, and the fourth border; the pole mounting hole, the explosion-proof valve hole, and the liquid injection hole are located on the first border, the second border, or the fourth border.

[0014] Optionally, the pole mounting hole and the liquid injection hole are both located on the first frame, and the explosion-proof valve is located on the first frame, the second frame, or the fourth frame.

[0015] Optionally, the pole mounting hole is located on the second frame or the fourth frame, the injection hole is located on the second frame or the fourth frame, and the explosion-proof valve is located on the first frame, the second frame, or the fourth frame.

[0016] Optionally, the metal frame further includes heat dissipation fins disposed on the outside of the rectangular frame;

[0017] When both of the pole mounting holes and the liquid injection hole are located on the first frame, the heat dissipation fins are located on the outer surface of the second frame or the fourth frame.

[0018] When the two pole mounting holes are located on the second frame and the fourth frame respectively, the heat dissipation fins are located on the outer surface of the first frame.

[0019] Optionally, the metal frame further includes a rectangular mounting groove disposed on at least one side of the rectangular frame along its width direction, the rectangular mounting groove communicating with the receiving space.

[0020] Optionally, the base plate of the pole post and the cross-section of the first end are rectangular, the pole post also includes a second end, and the pole post mounting hole is an oblong hole provided on the rectangular frame, the oblong hole being eccentrically provided along the width direction of the rectangular frame.

[0021] Optionally, the base plate of the pole post and the first end are integrally formed, and the second end of the pole post includes a first segment integrally formed with the base plate and a second segment welded and fixed to the first segment. The second segment includes a copper column welded and fixed to the first segment and an aluminum column welded and fixed to the copper column.

[0022] Optionally, the base plate of the pole post and the cross-section of the first end are circular, and the pole post mounting hole is a first circular hole provided on the rectangular frame, with the first circular hole centered along the width direction of the rectangular frame.

[0023] Optionally, the mounting assembly includes an outer connecting piece fixed to the pole post, a first insulating member disposed on the outside of the metal frame to space the outer connecting piece from the metal frame, and a second insulating member disposed on the inside of the metal frame to space the pole post from the metal frame.

[0024] Optionally, the mounting assembly further includes a first sealing ring fitted onto the first end of the pole post. When the pole post is fixed to the outer connecting piece, the first sealing ring is pressed vertically between the metal frame and the base plate by the base plate of the pole post.

[0025] Optionally, the explosion-proof valve is integrally formed with the metal frame, the explosion-proof valve hole is a blind hole provided on the metal frame, and the explosion-proof valve is a grooved structure provided at the blind hole.

[0026] Optionally, the explosion-proof valve includes an explosion-proof sheet with a grooved structure and an explosion-proof membrane. The explosion-proof valve orifice includes a first stepped hole, a second stepped hole, and a pressure relief hole connected sequentially from the outside to the inside along the thickness direction of the metal frame. The explosion-proof sheet is welded to the second stepped hole, and the explosion-proof membrane is attached to the first stepped hole. The explosion-proof sheet and the explosion-proof membrane have a gap in the explosion-proof orifice.

[0027] Optionally, the sealing assembly includes a sealing rivet disposed at the injection hole and a second sealing ring disposed between the sealing rivet and the metal frame.

[0028] On the other hand, the present invention provides a battery comprising the aforementioned integrated battery frame, an electrode core assembly disposed within the receiving space of the integrated battery frame, and two shell covers respectively disposed on both sides of the integrated battery frame to seal the receiving space, wherein the shell covers are welded and fixed to the metal frame of the integrated battery frame.

[0029] The beneficial effects of this invention are as follows:

[0030] The integrated battery frame provided by this invention includes a metal frame, which comprises a rectangular frame with accommodating space. This rectangular frame can meet the design requirements of battery structures of different sizes, allowing the integrated battery frame structure to meet the design requirements of different battery sizes. The structure is simple and easy to manufacture. In specific assembly, the metal frame accommodates and fixes the battery cells and internal structural components, providing ample placement space for the internal battery components, which is beneficial to the stability of the battery. Furthermore, the use of the metal frame improves the overall structural strength of the battery, ensuring that it is not easily deformed or damaged under external forces. The integrated structural design of this invention, which places the two terminal mounting holes, the explosion-proof valve hole, and the liquid injection hole on the metal frame, reduces the number of parts during battery assembly and simplifies the assembly process. Therefore, compared with traditional battery cover assemblies, the integrated battery frame provided by this invention, when applied to ultra-thin batteries, not only improves the structural strength and safety of the battery but also optimizes space utilization, simplifies the assembly process, and helps to improve the energy density of the battery. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the integrated battery frame structure provided by the present invention;

[0032] Figure 2 is a schematic diagram of a metal frame structure provided in an embodiment of the present invention;

[0033] Figure 3 is a schematic diagram of the installation component structure provided by the present invention;

[0034] Figure 4 is a cross-sectional schematic diagram of the installation assembly and pole assembly provided in an embodiment of the present invention;

[0035] Figure 5 is a cross-sectional schematic diagram of the installation assembly and pole assembly provided in another embodiment of the present invention;

[0036] Figure 6 is a cross-sectional schematic diagram of the explosion-proof valve structure provided by the present invention;

[0037] Figure 7 is an exploded view of a battery according to an embodiment of the present invention;

[0038] Figure 8 is a schematic diagram of a metal frame structure provided in another embodiment of the present invention.

[0039] The reference numerals in the accompanying drawings are as follows: 1. Metal frame; 11. First frame; 12. Second frame; 13. Third frame; 14. Fourth frame; 15. Terminal mounting hole; 16. Explosion-proof valve hole; 161. First step hole; 162. Second step hole; 163. Pressure relief hole; 17. Liquid injection hole; 2. Terminal; 21. Substrate; 22. First end; 23. Second end; 3. Mounting assembly; 31. External connecting piece; 32. First insulating component; 33. Second insulating component; 34. First sealing ring; 4. Explosion-proof valve; 41. Explosion-proof sheet; 42. Explosion-proof membrane; 5. Sealing assembly; 6. Heat dissipation fins; 7. Sealing rivet; 8. Second sealing ring; 9. Terminal core assembly; 10. Shell cover; 18. Insulating membrane; 200. Integrated battery frame. Detailed Implementation

[0040] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0043] Referring to Figure 1, the present invention provides an integrated battery frame 200, comprising:

[0044] Metal frame 1, the metal frame 1 includes a rectangular frame with a accommodating space and pole mounting holes 15, explosion-proof valve holes 16 and liquid injection holes 17 disposed on the rectangular frame;

[0045] The pole post 2 includes a substrate 21 disposed within the metal frame 1 and a first end 22 disposed on one side of the substrate 21 and extending to the outside of the metal frame 1 through the pole post mounting hole 15.

[0046] Mounting component 3, which fixes and seals the pole post 2 to the pole post mounting hole 15 of the metal frame 1;

[0047] An explosion-proof valve 4 is disposed within the explosion-proof valve hole 16;

[0048] The sealing component 5 is disposed within the injection hole 17.

[0049] Specifically, the integrated battery frame 200 provided by this invention includes a metal frame 1, which comprises a rectangular frame with accommodating space. In specific assembly, the metal frame 1 accommodates and fixes the battery cells and internal structural components, providing ample placement space for the internal battery components, which is beneficial to the stability of the battery. In addition, the use of the metal frame 1 improves the overall structural strength of the battery, ensuring that it is not easily deformed or damaged under external forces. In this invention, terminal mounting holes 15 are provided on the metal frame 1. The provision of terminal mounting holes 15 allows the terminal 2 to be easily installed on the metal frame 1, reducing the number of related structural components during battery assembly. By optimizing the design of the metal frame 1 and the terminal 2, the ineffective space inside the battery is reduced, which is beneficial to improving the space utilization of the battery, thereby improving the energy density of the battery. That is, compared with the traditional battery cover assembly, the integrated battery frame 200 provided by this invention, when applied to ultra-thin batteries, not only improves the structural strength and safety of the battery, but also increases the energy density of the battery.

[0050] Specifically, the design of the metal frame 1 is highly flexible, and its shape and size can be adjusted as needed to accommodate batteries of different types and sizes. At the same time, the integrated battery frame 200 provides better mechanical protection for the battery, reduces mechanical wear during use, and helps extend the battery's lifespan.

[0051] Referring to Figure 2, in some embodiments, the rectangular frame includes a first border 11, a second border 12, a third border 13, and a fourth border 14 connected end to end in sequence, with the first border 11 located above the second border 12, the third border 13, and the fourth border 14; the pole mounting hole 15, the explosion-proof valve hole 16, and the liquid injection hole 17 are located on the first border 11, the second border 12, or the fourth border 14.

[0052] Specifically, the first frame 11, the second frame 12, the third frame 13, and the fourth frame 14 can be connected end to end to form the rectangular frame, or they can be integrally extruded and the wall thickness is increased at adjacent bends to improve the structural strength of the rectangular frame. The first frame 11 and the third frame 13 are provided along the width extension direction of the rectangular frame, and the second frame 12 and the fourth frame 14 are provided along the length extension direction of the rectangular frame. The rectangular frame is a metal frame 1, which can be obtained by bending and welding. The welding can be selected from friction welding, ultrasonic welding, laser welding, or resistance welding.

[0053] Specifically, setting the terminal mounting hole 15 and the explosion-proof valve hole 16 on the first side 11, second side 12, or fourth side 14 of the rectangular frame simplifies the battery assembly process and reduces the difficulty of installing the corresponding structural components, the terminal 2 and the explosion-proof valve 4, in subsequent steps. Since the electrolyte injection hole 17 is usually used for the initial electrolyte injection of the battery and subsequent electrolyte replenishment or replacement, setting the electrolyte injection hole 17 on the first side 11, second side 12, or fourth side 14 of the rectangular frame in this application provides a convenient electrolyte injection channel on the side of the battery, making the electrolyte injection and replacement process simpler and faster, and making it easier to monitor and manage the electrolyte flow.

[0054] In some embodiments, both pole mounting holes 15 and the injection hole 17 are located on the first frame 11, and the explosion-proof valve hole 16 is located on the first frame 11, the second frame 12, or the fourth frame 14.

[0055] Specifically, when it is necessary to assemble the pole post 2 on one side of the rectangular frame, the pole post mounting hole 15 can be set on the first frame 11 of the rectangular frame provided in this application, and the liquid injection hole 17 can also be set near the pole post mounting hole 15. That is, both pole post mounting holes 15 and the liquid injection hole 17 are located on the first frame 11. At this time, the third frame 13 is away from the pole post mounting hole 15 and the liquid injection hole 17. The explosion-proof valve hole 16 can be set on the first frame 11, the second frame 12 or the fourth frame 14 (as shown in Figure 8).

[0056] In some embodiments, the two pole mounting holes 15 are located on the second frame 12 and the fourth frame 14, respectively, the liquid injection hole 17 is located on the second frame 12 and the fourth frame 14, and the explosion-proof valve hole 16 is located on the first frame 11, the second frame 12, the third frame 13, or the fourth frame 14.

[0057] Specifically, when pole posts 2 need to be installed on both sides of the rectangular frame at the same time, the two pole post mounting holes 15 can be respectively set on the second side frame 12 and the fourth side frame 14, and the corresponding explosion-proof valve hole 16 can be set on the first side frame 11, the second side frame 12 or the fourth side frame 14.

[0058] In some embodiments, the metal frame 1 further includes heat dissipation fins 6 disposed on the outside of the rectangular frame;

[0059] When both of the pole mounting holes 15 and the liquid injection hole 17 are located on the first frame 11 or the third frame 13, the heat dissipation fins 6 are located on the outer side of the second frame 12 or the fourth frame 14.

[0060] When the two pole mounting holes 15 are located on the first frame 11 and the third frame 13 or on the second frame 12 and the fourth frame 14 respectively, the heat dissipation fins 6 are located on the outer surface of the second frame 12, the fourth frame 14, the first frame 11 or the third frame 13.

[0061] Specifically, when it is necessary to assemble the pole post 2 and the liquid injection hole 17 on one side of the rectangular frame, the heat dissipation fins 6 can be disposed on the outer side of the second frame 12 or the fourth frame 14; when it is necessary to assemble the pole post 2 and the liquid injection hole 17 on both sides of the rectangular frame, the two pole post mounting holes 15 can be disposed on the first frame 11 and the third frame 13 respectively, and the heat dissipation fins 6 can be disposed on the outer side of the second frame 12 or the fourth frame 14 respectively.

[0062] In some embodiments, the metal frame 1 further includes a rectangular mounting groove disposed on at least one side of the rectangular frame along its width direction, the rectangular mounting groove communicating with the receiving space.

[0063] Specifically, the rectangular mounting slot is connected to the accommodating space and is used to accommodate the installation of the battery core assembly 9 and other structural components.

[0064] In some embodiments, the substrate 21 and the first end 22 of the pole post 2 have a rectangular cross-section. The pole post 2 also includes a second end 23. The pole post mounting hole 15 is an oblong hole provided on the rectangular frame. The oblong hole is eccentrically provided along the width direction of the rectangular frame.

[0065] Specifically, the cross-section of the substrate 21 and the first end 22 of the electrode post 2 is designed as a rectangular structure, which is beneficial to improving the structural strength. The rectangular structure performs well in terms of mechanical stability and helps to prevent displacement or damage caused by vibration or impact during battery use. The electrode post mounting hole 15 is set as an oblong hole, which provides a certain adjustment space for the installation of the electrode post 2 and helps to avoid contact and compression of other structural components during the assembly process of the electrode post 2.

[0066] Specifically, the terminal post 2 and the second end 23 are integrally formed. The advantage of the second end 23 being integrally formed with the terminal post 2 is that, since the second end 23 is equivalent to a traditional internal lead-out piece, it is now integrated on the terminal post 2. On the one hand, it saves internal battery space; on the other hand, it allows the terminal post 2 and the tab to make direct contact, reducing instability caused by the connection and simplifying the internal battery structure. In some embodiments, the substrate 21 of the terminal post 2 and the first end 22 are integrally formed. The second end 23 of the terminal post 2 includes a first segment integrally formed with the substrate 21 and a second segment welded and fixed to the first segment. The second segment includes a copper pillar welded and fixed to the first segment and an aluminum pillar welded and fixed to the copper pillar.

[0067] Specifically, the substrate 21, the first end 22, and the second end 23 are integrally formed. From an assembly perspective, the integrally formed pole 2 reduces adverse effects caused by assembly, such as loosening of welded or bonded parts, thereby enhancing the durability and reliability of the pole 2. In addition, the material cooling and solidification during the integral forming process reduces stress concentration inside the material, thereby enhancing the impact resistance of the pole 2. Through the integral forming process, it can be ensured that there are no air gaps or impurities inside the pole 2, thereby improving the efficiency of current conduction.

[0068] Specifically, the second segment includes a copper column and an aluminum column, that is, the second segment is a combination of copper column and aluminum column. The copper column has excellent electrical conductivity, while the aluminum column is lightweight and has good corrosion resistance. The two are fixed by welding, which not only ensures efficient current transmission, but also reduces the weight of the pole 2. The copper column and aluminum column can be connected and fixed by laser welding or ultrasonic welding.

[0069] Referring to Figure 5, in some embodiments, the substrate 21 and the first end 22 of the pole post 2 have a circular cross-section, and the pole post mounting hole 15 is a first circular hole provided on the rectangular frame, with the first circular hole arranged centrally along the width direction of the rectangular frame.

[0070] Specifically, the first circular hole is centered along the width of the rectangular frame, which makes the force more uniform during pole assembly, reduces the risk of potential structural failure caused by uneven force, and thus helps to improve the stability and mechanical strength of the overall battery structure. In addition, the use of a circular cross-section pole substrate 21 and a first end 22 helps to reduce stress concentration, thereby enhancing the durability and reliability of the structure.

[0071] Specifically, when the bottom surface of the pole post 2 is a circular structure, laser welding can be used to weld the bottom surface of the pole post 2 to the electrode tab. Alternatively, if ultrasonic welding is used to weld the bottom surface of the pole post 2 to the electrode tab, a metal connecting piece needs to be added to the bottom surface of the pole post 2. The connecting metal piece extends from the bottom surface of the pole post to the outside of the rectangular frame, is welded to the electrode tab of the pole core, and then the metal connecting piece is bent to install the pole core into the rectangular frame.

[0072] Referring to Figure 3, in some embodiments, the mounting assembly 3 includes an outer connecting piece 31 fixed to the pole post 2, a first insulating member 32 disposed on the outside of the metal frame 1 to space the outer connecting piece 31 from the metal frame 1, and a second insulating member 33 disposed on the inside of the metal frame 1 to space the pole post 2 from the metal frame 1.

[0073] Specifically, the external connecting piece 31 is fixed to the terminal post 2, which increases the overall mechanical stability of the assembled battery; the first insulating component 32 is located on the outside of the metal frame 1, and its main function is to isolate the external connecting piece 31 from the metal frame 1, prevent current from flowing directly through the metal frame 1, reduce power loss, and at the same time avoid the problem of short circuit caused by direct contact between the external connecting piece 31 and the metal frame 1, thereby enhancing the safety performance of the battery.

[0074] Specifically, the second insulating member 33 is disposed inside the metal frame 1 to isolate the terminal post 2 from the metal frame 1 and prevent current from flowing directly to the metal frame 1. In addition, the second insulating member 33 also helps to stabilize the position of the terminal post 2 and prevent displacement caused by vibration or other reasons during battery use, thereby maintaining the stability of battery performance.

[0075] In some embodiments, the mounting assembly 3 further includes a first sealing ring 34 sleeved on the first end 22 of the pole post 2. When the pole post 2 is fixed to the outer connecting piece 31, the first sealing ring 34 is pressed between the metal frame 1 and the base plate 21 of the pole post 2 in the vertical direction.

[0076] Specifically, the first sealing ring 34 is pressed between the metal frame 1 and the substrate 21 of the pole post 2 in the vertical direction. This arrangement helps the first sealing ring 34 seal the assembly gap between the metal frame 1 and the substrate 21, thereby forming an effective sealing barrier between the pole post 2 and the mounting assembly 3, avoiding any possible leakage paths, and thus achieving a better sealing effect.

[0077] In some embodiments, the second insulating member 33 is provided with a first groove into which the substrate 21 can be embedded, and a through hole is provided in the first groove for the first sealing ring 34 to be accommodated. When the pole post 2 is welded and fixed to the outer connecting piece 31, the first sealing ring 34 is pressed in the horizontal direction between the through hole of the second insulating member 33 and the first end 22 of the pole post 2.

[0078] Specifically, the second insulating member 33 functions to isolate the electrode post 2 from the metal frame 1. The design of the first groove provides an embedding space for the substrate 21 of the electrode post 2, ensuring the stable fixation of the electrode post 2. At the same time, the through hole in the first groove provides a receiving space for the first sealing ring 34. In this design, the first sealing ring 34 plays an important sealing role. When the substrate 21 is embedded in the first groove, the first sealing ring 34 is compressed in the horizontal direction. This compression ensures that the first sealing ring 34 can effectively fill the gap between the first end 22 of the electrode post 2 and the through hole of the second insulating member 33, thereby providing excellent sealing performance and preventing leakage of internal electrolyte or gas.

[0079] In some embodiments, the first insulating member 32 is provided with a mounting sleeve that can extend into the pole mounting hole 15, the mounting sleeve extending into the pole mounting hole 15 and abutting against the first sealing ring 34.

[0080] The mounting sleeve extends into the terminal mounting hole 15 and abuts against the first sealing ring 34, thus forming a more reliable sealing system. Simultaneously, the mounting sleeve isolates the terminal from direct contact between the two metal components, the terminal and the metal frame. When the terminal 2 is assembled with the metal frame 1, the first sealing ring 34 is subjected to uniform pressure, fully filling the assembly gap. The design of the mounting sleeve on the first insulating component 32 inserting into the terminal mounting hole 15 increases the structural stability of the entire assembly. This mechanical fixing method reduces component movement caused by vibration or external forces, thereby improving the overall durability and reliability of the battery. Furthermore, since the first sealing ring 34 is correctly positioned and compressed, adjustment time during assembly is reduced, improving production efficiency. In short, the mounting sleeve on the first insulating component 32 and its abutment design with the first sealing ring 34 simplify the assembly process while enhancing the sealing and structural stability of the battery assembly.

[0081] In some embodiments, the first insulating member 32 is further provided with a second groove into which the outer connecting piece 31 can be embedded, the outer connecting piece 31 is disposed in the second groove, and the top surface of the outer connecting piece 31 is higher than the top surface of the first insulating member 32.

[0082] Specifically, by setting the top surface of the outer connecting piece 31 higher than the top surface of the first insulating member 32, it can be ensured that the outer connecting member can better support and protect the internal structure during assembly, which helps to reduce damage or deformation caused by external pressure or impact; the design of the second groove enables the outer connecting member to be accurately positioned in a predetermined position, thereby ensuring the alignment and balance of the overall structure, which is beneficial to maintaining the mechanical integrity and electrical performance of the battery.

[0083] In some embodiments, the outer connecting piece 31 is provided with a fixing hole for inserting the pole post 2. The first end 22 of the pole post 2 passes through the first sealing ring 34 and the mounting sleeve in sequence, and then extends into the fixing hole to be welded and fixed to the outer connecting piece 31.

[0084] Specifically, the first end 22 of the electrode post 2 passes through the first sealing ring 34 and the mounting sleeve in sequence. This process ensures a tight contact between the electrode post 2 and the first sealing ring 34 and the mounting sleeve. When the electrode post 2 is inserted into the fixing hole of the outer connecting piece 31 and welded, this tight contact forms an effective seal, preventing leakage of internal electrolyte or gas.

[0085] In some embodiments, the explosion-proof valve 4 is integrally formed with the metal frame 1, the explosion-proof valve hole 16 is a blind hole provided on the metal frame 1, and the explosion-proof valve 4 is a grooved structure provided at the blind hole.

[0086] Specifically, through integrated molding technology, the explosion-proof valve 4 and the metal frame 1 become a whole, which increases the integrity of the structure. The integrated molding design of the explosion-proof valve 4 and the metal frame 1 not only improves the safety and reliability of the battery, but also reduces production costs and optimizes the manufacturing process.

[0087] Referring to Figure 6, in some embodiments, the explosion-proof valve 4 includes an explosion-proof sheet 41 with a grooved structure and an explosion-proof membrane 42. The explosion-proof valve orifice 16 includes a first stepped hole 161, a second stepped hole 162, and a pressure relief hole 163 connected sequentially from the outside to the inside along the thickness direction of the metal frame 1. The explosion-proof sheet 41 is welded to the second stepped hole 162, and the explosion-proof membrane 42 is attached to the first stepped hole 161. The explosion-proof sheet 41 and the explosion-proof membrane 42 have a gap in the explosion-proof orifice.

[0088] The two stepped holes are simply to ensure a gap of 0.3-1mm between them. If the gap is less than 0.3mm, the membrane will adhere to the sheet, increasing the detonation pressure of the explosion-proof sheet and preventing it from meeting design requirements. If the gap is greater than 1mm, it cannot be arranged in the thickness direction of the cell frame, and the structural strength of the steps supporting the explosion-proof sheet will not meet the requirements.

[0089] Specifically, the design of the first step hole 161 and the second step hole 162 provides a fixed space for the explosion-proof sheet and the explosion-proof membrane, respectively. The explosion-proof membrane 42 is fixed at the first step hole 161, and the explosion-proof sheet 41 is fixed at the second step hole 162. This fixing method is more reliable than mechanical fixing and can ensure the stability of the explosion-proof sheet 41 in extreme environments, reducing the risk of failure due to vibration or impact. The explosion-proof membrane 42 is attached to the first step hole 161, and there is a gap between it and the explosion-proof sheet 41. The gap is 0.3-1mm. If it is less than 0.3mm, the membrane will stick to the sheet, increasing the detonation pressure of the explosion-proof sheet, making the explosion-proof sheet 41 unable to meet the design requirements. If it is greater than 1mm, it cannot be arranged in the thickness direction of the metal frame 1, and the structural strength of the step supporting the explosion-proof sheet 41 cannot meet the requirements.

[0090] In some embodiments, the sealing assembly 5 includes a sealing rivet 7 disposed at the injection hole 17 and a second sealing ring 8 disposed between the sealing rivet 7 and the metal frame 1.

[0091] Specifically, the sealing rivet 7 is located at the injection hole 17, which is the channel connecting the inside of the battery to the outside world and is used to inject electrolyte. The function of the sealing rivet 7 is to seal the injection hole 17 after electrolyte injection to ensure that the electrolyte does not leak. The second sealing ring 8 is set between the sealing rivet 7 and the metal frame 1, which can fill the gap between the sealing rivet 7 and the metal frame 1, providing an additional layer of protection for the overall sealing of the battery.

[0092] Referring to FIG7, another embodiment of the present invention provides a battery, including the integrated battery frame 200, an electrode core assembly 9 disposed in the receiving space of the integrated battery frame 200, and two shell covers 10 respectively disposed on both sides of the integrated battery frame 200 to seal the receiving space, wherein the shell covers 10 are welded and fixed to the metal frame 1 of the integrated battery frame 200.

[0093] Specifically, the integrated battery frame 200 serves as the main support for the battery. After bending and welding, the ends of the integrated battery frame 200 form a hollow metal frame 1. The shell cover 10 is used to close the hollow structure of the integrated battery frame 200 to form a sealed receiving area, which accommodates the electrode core assembly 9. Through the cooperation between the integrated battery frame 200 and the shell cover 10, compared with the traditional steel shell cover structure in the prior art, the cooperation between the integrated battery frame 200 and the shell cover 10 provided in this application reduces the processing difficulty of the battery shell cover 10 and reduces the production cost of the shell cover 10 while being suitable for the assembly of ultra-thin batteries.

[0094] In some embodiments, the electrode core assembly 9 includes an electrode core with tabs and a spacer ring that confines the electrode core within a metal frame 1 of the integrated battery frame 200. The spacer ring is provided with a limiting hole through which the tabs can pass, and the tabs pass through the limiting hole of the spacer ring and are fixedly connected to the terminal post 2 in the integrated battery frame 200.

[0095] Specifically, both ends of the electrode core are provided with tabs. As an important part of the connection between the battery and the external circuit, the tabs extend through the limiting holes in the spacer and are connected to the pole post 2 in the integrated battery frame 200 by welding. This structure can effectively ensure the mechanical fixation and electrical connection stability of the electrode core in the power battery and reduce poor contact caused by vibration or impact.

[0096] In some embodiments, the electrode core assembly 9 further includes an insulating film 18 that wraps around the electrode core, the end of the insulating film 18 being fixedly connected to the spacer ring.

[0097] In the construction of the battery, the insulating film 18 serves as an important safety component, used to isolate the cell from other parts of the battery to prevent short circuits and to stabilize the structure.

[0098] Specifically, during battery assembly, the two ends of the insulating film 18 are connected to the spacer through a hot-melt technology. The contact surface between the insulating film 18 and the spacer is melted by high temperature, and a strong adhesive is formed after cooling, which can effectively prevent the insulating film 18 from shifting or peeling.

[0099] Specifically, the insulating film 18 is usually made of heat-resistant material, and the insulating film 18 provided in this application is made of either polyester (PET) or polypropylene (PP).

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated battery frame, characterized in that, include: A metal frame, comprising a rectangular frame with a receiving space and pole mounting holes, explosion-proof valve holes and liquid injection holes disposed on the rectangular frame; The electrode post includes a substrate disposed within the metal frame and a first end disposed on one side of the substrate and extending to the outside of the metal frame through the electrode post mounting hole; The mounting assembly secures and seals the pole to the pole mounting hole in the metal frame; An explosion-proof valve is disposed within the explosion-proof valve orifice; A sealing assembly is disposed within the injection hole.

2. The integrated battery frame according to claim 1, characterized in that, The rectangular frame includes a first border, a second border, a third border, and a fourth border connected end to end in sequence, with the first border located above the second border, the third border, and the fourth border; the pole mounting hole, the explosion-proof valve hole, and the liquid injection hole are located on the first border, the second border, or the fourth border.

3. An integrated battery frame according to claim 2, characterized in that, The pole mounting hole and the liquid injection hole are both located on the first frame, and the explosion-proof valve hole is located on the first frame, the second frame, or the fourth frame.

4. An integrated battery frame according to claim 2, characterized in that, The pole mounting hole is located on the second frame and / or the fourth frame, the liquid injection hole is located on the second frame or the fourth frame, and the explosion-proof valve hole is located on the first frame, the second frame, or the fourth frame.

5. An integrated battery frame according to claim 3 or 4, characterized in that, The metal frame also includes heat dissipation fins disposed on the outside of the rectangular frame; When the pole mounting hole and the liquid injection hole are both located on the first frame, the heat dissipation fins are located on the outer side of the second frame or the fourth frame. When the pole mounting hole is located on the second frame and / or the fourth frame, the heat dissipation fins are located on the outer surface of the first frame.

6. An integrated battery frame according to claim 4, characterized in that, The metal frame further includes a rectangular mounting groove disposed on at least one side of the rectangular frame along its width direction, the rectangular mounting groove communicating with the receiving space.

7. An integrated battery frame according to claim 1, characterized in that, The base plate of the pole post and the cross-section of the first end are rectangular. The pole post also includes a second end. The pole post mounting hole is an oblong hole provided on the rectangular frame. The oblong hole is eccentrically provided along the width direction of the rectangular frame.

8. An integrated battery frame according to claim 7, characterized in that, The base plate of the pole post and the first end are integrally formed. The second end of the pole post includes a first section integrally formed with the base plate and a second section welded and fixed to the first section. The second section includes a copper column welded and fixed to the first section and an aluminum column welded and fixed to the copper column.

9. An integrated battery frame according to claim 1, characterized in that, The base plate of the pole post and the cross-section of the first end are circular. The pole post mounting hole is a first circular hole provided on the rectangular frame, and the first circular hole is arranged centrally along the width direction of the rectangular frame.

10. An integrated battery frame according to claim 1, characterized in that, The mounting assembly includes an outer connecting piece fixed to the pole post, a first insulating member disposed on the outside of the metal frame to separate the outer connecting piece from the metal frame, and a second insulating member disposed on the inside of the metal frame to separate the pole post from the metal frame.

11. An integrated battery frame according to claim 10, characterized in that, The mounting assembly also includes a first sealing ring sleeved on the first end of the pole post. When the pole post is fixed to the outer connecting piece, the first sealing ring is pressed between the metal frame and the substrate in the vertical direction by the substrate of the pole post.

12. An integrated battery frame according to claim 1, characterized in that, The explosion-proof valve is integrally formed with the metal frame, the explosion-proof valve hole is a blind hole provided on the metal frame, and the explosion-proof valve is a grooved structure provided at the blind hole.

13. An integrated battery frame according to claim 1, characterized in that, The explosion-proof valve includes an explosion-proof sheet with a grooved structure and an explosion-proof membrane. The explosion-proof valve orifice includes a first stepped hole, a second stepped hole, and a pressure relief hole connected sequentially from the outside to the inside along the thickness direction of the metal frame. The explosion-proof sheet is welded to the second stepped hole, and the explosion-proof membrane is attached to the first stepped hole. The explosion-proof sheet and the explosion-proof membrane have a gap in the explosion-proof orifice.

14. An integrated battery frame according to claim 1, characterized in that, The sealing assembly includes a sealing rivet disposed at the injection hole and a second sealing ring disposed between the sealing rivet and the metal frame.

15. A battery, characterized in that, The battery includes an integrated battery frame as described in any one of claims 1-14, an electrode core assembly disposed within the receiving space of the integrated battery frame, and two shell covers disposed on both sides of the integrated battery frame to seal the receiving space, wherein the shell covers are welded and fixed to the metal frame of the integrated battery frame.

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