Integrated battery frame and battery

Abstract

In order to solve the problem that in the prior art, the product size of a traditional battery of a steel shell cover plate structure cannot meet the design requirement of an ultra-thin battery, the integrated battery frame and the battery are provided, the integrated battery frame comprises a metal frame, the metal frame comprises a rectangular frame with a containing space, a pole mounting hole, an anti-explosion valve hole and a liquid injection hole, and the pole mounting hole, the anti-explosion valve hole and the liquid injection hole are formed in the rectangular frame; the pole comprises a substrate arranged in the metal frame and a first end which is arranged on one side of the substrate and extends to the outside of the metal frame through the pole mounting hole; the mounting assembly is used for fixing and sealing the pole in the pole mounting hole of the metal frame; an explosion-proof valve and a sealing assembly. Compared with a traditional battery cover plate assembly, the integrated battery frame provided by the utility model has the advantages that when the integrated battery frame is applied to an ultra-thin battery, the structural strength and the safety of the battery are improved, the space utilization is optimized, the assembly process is simplified, and the energy density of the battery is favorably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing, and particularly relates to an integrated battery frame and a battery. Background Art

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

[0003] The structural components of existing batteries include a positive electrode, a negative electrode, a separator, a cover assembly, and a casing. The battery cell, consisting of the positive electrode, negative electrode, and separator, is placed into the casing, which is then sealed with a cover assembly. Battery casings are typically stamped from steel sheets. Due to processing limitations, the width and depth of the stamped steel sheets are significantly limited, and the thickness of the stamped steel shell is uneven. To ensure the overall support and mechanical strength of the battery, traditional battery structures cannot meet the dimensional design requirements of extremely thin batteries. Utility Model Content

[0004] Aiming at the problem that the product size of batteries with traditional steel shell cover structure in the existing technology cannot meet the design requirements of ultra-thin batteries, an integrated battery frame and battery are provided.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0006] On the one hand, the utility model provides an integrated battery frame, comprising

[0007] A metal frame, comprising a rectangular frame having an accommodating space and a pole mounting hole, an explosion-proof valve hole, and a liquid injection hole provided on the rectangular frame;

[0008] A pole, the pole comprising a base plate disposed within the metal frame, a first end disposed on one side of the base plate and extending to the outside of the metal frame through the pole mounting hole;

[0009] An installation assembly, wherein the installation assembly fixes and seals the pole at the pole installation hole of the metal frame;

[0010] an explosion-proof valve, disposed in the explosion-proof valve hole;

[0011] The sealing component is arranged in the liquid injection hole.

[0012] Optionally, the rectangular frame includes a first frame, a second frame, a third frame and a fourth frame connected end to end in sequence, and the first frame is located above the second frame, the third frame and the fourth frame; the pole mounting hole, the explosion-proof valve hole and the injection hole are located on the first frame, the second frame or the fourth frame.

[0013] 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.

[0014] Optionally, the pole mounting hole is located on the second frame or the fourth frame, the injection holes are all 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.

[0015] Optionally, the metal frame further includes heat dissipation fins arranged on the outside of the rectangular frame;

[0016] When the two pole mounting holes and the liquid injection hole are both located on the first frame, the heat dissipation fins are located on the outer surface of the second frame or the fourth frame;

[0017] When the two pole mounting holes are respectively located on the second frame and the fourth frame, the heat dissipation fins are located on the outer surface of the first frame.

[0018] Optionally, the metal frame further includes a rectangular mounting groove provided on at least one side surface of the rectangular frame along the width direction thereof, and the rectangular mounting groove is communicated with the accommodating space.

[0019] Optionally, the cross-section of the substrate and the first end of the pole is a rectangular structure, the pole also includes a second end, and the pole mounting hole is a waist-shaped hole set on the rectangular frame, and the waist-shaped hole is eccentrically set along the width direction of the rectangular frame.

[0020] Optionally, the substrate of the pole and the first end are integrally formed, the second end of the pole includes a first section integrally formed with the substrate 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.

[0021] Optionally, the cross-section of the substrate and the first end of the pole is a circular structure, and the pole mounting hole is a first circular hole provided on the rectangular frame, and the first circular hole is arranged in the center along the width direction of the rectangular frame.

[0022] Optionally, the mounting assembly includes an external connecting plate fixed to the pole, a first insulating member arranged on the outside of the metal frame to separate the external connecting plate from the metal frame, and a second insulating member arranged on the inside of the metal frame to separate the pole from the metal frame.

[0023] Optionally, the mounting assembly further includes a first sealing ring sleeved on the first end of the pole, and when the pole is fixed to the external connecting plate, the first sealing ring is squeezed between the metal frame and the substrate by the substrate of the pole in the vertical direction.

[0024] Optionally, the explosion-proof valve and the metal frame are integrally formed, the explosion-proof valve hole is a blind hole provided on the metal frame, and the explosion-proof valve is a notch structure provided at the blind hole.

[0025] Optionally, the explosion-proof valve includes an explosion-proof piece and an explosion-proof membrane with a notched structure, and the explosion-proof valve hole includes a first step hole, a second step hole and a pressure relief hole connected in sequence from the outside to the inside along the thickness direction of the metal frame, the explosion-proof piece is welded at the second step hole, and the explosion-proof membrane is attached to the first step hole, and the explosion-proof piece and the explosion-proof membrane have a gap in the explosion-proof hole.

[0026] Optionally, the sealing assembly includes a sealing rivet arranged at the liquid injection hole and a second sealing ring arranged between the sealing rivet and the metal frame.

[0027] On the other hand, the utility model provides a battery, including the integrated battery frame, a pole core assembly arranged in the accommodating space of the integrated battery frame, and two shell covers respectively arranged on both sides of the integrated battery frame to seal the accommodating space, and the shell covers are welded and fixed to the metal frame of the integrated battery frame.

[0028] The beneficial effects of the present invention are:

[0029] The integrated battery frame provided by the present invention includes a metal frame, which includes a rectangular frame with an accommodating space. The rectangular frame can meet the structural design requirements of batteries of different sizes, so that the structure of the integrated battery frame can meet the design requirements of different battery sizes. The structure is simple and easy to process. In the specific assembly, the metal frame accommodates and fixes the battery cells and internal structural parts, provides sufficient placement positions for the internal components of the battery, which is beneficial to the stability of the battery. In addition, the use of the metal frame improves the structural strength of the entire battery, ensuring that it is not easily deformed or damaged when subjected to external force; in the present invention, the two pole mounting holes, explosion-proof valve holes and injection holes are all arranged on the metal frame in an integrated structural design, which reduces the number of components during battery assembly and simplifies the assembly process. That is, compared with the traditional battery cover assembly, the integrated battery frame provided by the utility model, 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 is beneficial to improving the energy density of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the integrated battery frame structure provided by the utility model;

[0031] Figure 2 This is a schematic diagram of a metal frame structure provided by an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the installation assembly structure provided by the utility model;

[0033] Figure 4 This is a cross-sectional schematic diagram of the assembly of the mounting assembly and the pole provided by one embodiment of the present utility model;

[0034] Figure 5 This is a cross-sectional schematic diagram of the assembly of the mounting assembly and the pole provided by another embodiment of the present invention;

[0035] Figure 6 This is a schematic cross-sectional view of the explosion-proof valve structure provided by the utility model;

[0036] Figure 7 This is an exploded diagram of a battery provided by an embodiment of the present utility model;

[0037] Figure 8 This is a schematic diagram of a metal frame structure provided by another embodiment of the present invention.

[0038] The reference numerals in the drawings of the specification are as follows:

[0039] 1. Metal frame; 11. First frame; 12. Second frame; 13. Third frame; 14. Fourth frame; 15. Pole mounting hole; 16. Explosion-proof valve hole; 161. First step hole; 162. Second step hole; 163. Pressure relief hole; 17. Liquid injection hole; 2. Pole; 21. Base plate; 22. First end; 23. Second end; 3. Mounting assembly; 31. External connecting piece; 32. First insulating member; 33. Second insulating member; 34. First sealing ring; 4. Explosion-proof valve; 41. Explosion-proof disk; 42. Explosion-proof membrane; 5. Sealing assembly; 6. Heat dissipation fin; 7. Sealing rivet; 8. Second sealing ring; 9. Pole core assembly; 10. Shell cover; 18. Insulating membrane; 200. Integrated battery frame. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] Reference Figure 1 The present invention provides an integrated battery frame 200, comprising:

[0044] A metal frame 1, comprising a rectangular frame having an accommodating space and a pole mounting hole 15, an explosion-proof valve hole 16, and a liquid injection hole 17 provided on the rectangular frame;

[0045] The pole 2 includes a base plate 21 disposed in the metal frame 1 and a first end 22 disposed on one side of the base plate 21 and extending to the outside of the metal frame 1 through the pole mounting hole 15;

[0046] An installation component 3, which fixes and seals the pole 2 at the pole installation hole 15 of the metal frame 1;

[0047] An explosion-proof valve 4 is provided in the explosion-proof valve hole 16;

[0048] The sealing assembly 5 is disposed in the liquid injection hole 17 .

[0049] Specifically, the integrated battery frame 200 provided by the present invention includes a metal frame 1, which includes a rectangular frame with an accommodating space. In the specific assembly, the metal frame 1 accommodates and fixes the battery cells and internal structural parts, provides sufficient placement positions for the internal components of the battery, and is beneficial to the stability of the battery. In addition, the use of the metal frame 1 improves the structural strength of the entire battery, ensuring that it is not easily deformed or damaged when subjected to external force; in the present invention, the pole mounting hole 15 is set on the metal frame 1, and the setting of the pole mounting hole 15 enables the pole 2 to be conveniently installed on the metal frame 1, reducing the number of related structural parts during battery assembly. By optimizing the design of the metal frame 1 and the pole 2, the invalid space inside the battery is reduced, which is beneficial to improving the space utilization of the battery, and thus improving the energy density of the battery; that is, compared with the traditional battery cover assembly, the integrated battery frame 200 provided by the present invention is not only beneficial to improving the structural strength and safety of the battery when applied to ultra-thin batteries, but also can improve the energy density of the battery.

[0050] Specifically, the design of the metal frame 1 has high flexibility and the 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 of the battery during use, and is conducive to extending the service life of the battery.

[0051] Reference Figure 2 In some embodiments, the rectangular frame includes a first frame 11, a second frame 12, a third frame 13 and a fourth frame 14 connected end to end in sequence, and the first frame 11 is located above the second frame 12, the third frame 13 and the fourth frame 14; the pole mounting hole 15, the explosion-proof valve hole 16 and the injection hole 17 are located on the first frame 11, the second frame 12 or the fourth frame 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 formed by integral extrusion, 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, the operation of setting the pole mounting hole 15 and the explosion-proof valve hole 16 on the first frame 11, the second frame 12 or the fourth frame 14 of the rectangular frame can simplify the assembly process of the battery and reduce the difficulty of installing the corresponding structural parts, the pole 2 and the explosion-proof valve 4 in subsequent steps; since the injection hole 17 is usually used for the initial injection of the battery and the subsequent replenishment or replacement of the electrolyte, the injection hole 17 is set on the first frame 11, the second frame 12 or the fourth frame 14 of the rectangular frame in this application, which can provide a convenient injection channel on the side of the battery, making the process of injection and replacement of the electrolyte simpler and faster, and the flow of the electrolyte can be more easily monitored and managed.

[0054] In some embodiments, the two pole mounting holes 15 and the liquid injection hole 17 are both 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 2 on one side of the rectangular frame at the same time, the pole mounting hole 15 can be correspondingly set on the first frame 11 of the rectangular frame provided in the present application, and the injection hole 17 can also be set at a position close to the pole mounting hole 15, that is, the two pole mounting holes 15 and the injection hole 17 are both located on the first frame 11. At this time, the third frame 13 is away from the pole mounting hole 15 and the injection hole 17, and the explosion-proof valve hole 16 can be set on the first frame 11, the second frame 12 or the fourth frame 14 (such as Figure 8 ).

[0056] In some embodiments, the two pole mounting holes 15 are respectively located on the second frame 12 and the fourth frame 14, the 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 it is necessary to assemble the pole 2 on both sides of the rectangular frame at the same time, the two pole mounting holes 15 can be correspondingly set on the second frame 12 and the fourth frame 14, and the corresponding explosion-proof valve hole 16 can be set on the first frame 11, the second frame 12 or the fourth 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 the two pole mounting holes 15 and the liquid injection hole 17 are both located on the first frame 11 or the third frame 13 , the heat dissipation fins 6 are located on the outer surface of the second frame 12 or the fourth frame 14 ;

[0060] When the two pole mounting holes 15 are respectively located on the first frame 11 and the third frame 13 or on the second frame 12 and the fourth frame 14 , 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 2 and the liquid injection hole 17 on one side of the rectangular frame, the heat dissipation fin 6 can be arranged on the outer surface of the second frame 12 or the fourth frame 14; when it is necessary to assemble the pole 2 and the liquid injection hole 17 on both sides of the rectangular frame, the two pole mounting holes 15 can be respectively arranged on the first frame 11 and the third frame 13, and the heat dissipation fin 6 can be correspondingly arranged on the outer surface of the second frame 12 or the fourth frame 14, the two pole mounting holes 15 can be respectively arranged on the second frame 12 and the fourth frame 14, and the heat dissipation fin 6 can be correspondingly arranged on the outer surface of the first frame 11 or the third frame 13.

[0062] In some embodiments, the metal frame 1 further includes a rectangular mounting groove provided on at least one side surface of the rectangular frame along the width direction thereof, and the rectangular mounting groove is communicated with the accommodating space.

[0063] Specifically, the rectangular installation groove is communicated with the accommodating space and is used to accommodate the installation of the battery core assembly 9 and other mechanical components.

[0064] In some embodiments, the cross-section of the substrate 21 and the first end 22 of the pole 2 is a rectangular structure, the pole 2 also includes a second end 23, and the pole mounting hole 15 is a waist-shaped hole arranged on the rectangular frame, and the waist-shaped hole is eccentrically arranged along the width direction of the rectangular frame.

[0065] Specifically, the cross-sections of the substrate 21 and the first end 22 of the pole 2 are designed to be rectangular structures, which is beneficial to improving the structural strength. The rectangular structure performs well in terms of mechanical stability and helps prevent displacement or damage due to vibration or impact during battery use; the pole mounting hole 15 is set as a waist-shaped hole, which provides a certain adjustment space for the installation of the pole 2, which is beneficial to avoid the pole 2 from touching and squeezing other structural parts during the assembly process.

[0066] Specifically, the pole 2 and the second end 23 are integrally formed. The advantage of the integral formation of the second end 23 and the pole 2 is that, since the second end 23 is equivalent to a traditional inner lead-out tab and is now integrated on the pole 2, on the one hand, it can save internal space in the battery, and on the other hand, it allows the pole 2 and the tab to be in direct contact, reducing instability caused by the connection and simplifying the internal structure of the battery. In some embodiments, the base plate 21 and the first end 22 of the pole 2 are integrally formed, and the second end 23 of the pole 2 includes a first section integrally formed with the base plate 21 and a second section welded to the first section. The second section includes a copper column welded to the first section and an aluminum column welded to the copper column.

[0067] Specifically, the substrate 21 and 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 welding or bonding parts, thereby enhancing the durability and reliability of the pole 2. In addition, the cooling and solidification of the material during the integral molding process reduces stress concentration inside the material, thereby enhancing the impact resistance of the pole 2. The integral molding process can ensure that there are no air gaps or impurities inside the pole 2, thereby improving the efficiency of current conduction.

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

[0069] Reference Figure 5 In some embodiments, the cross-section of the substrate 21 and the first end 22 of the pole 2 is a circular structure, and the pole mounting hole 15 is a first circular hole set on the rectangular frame, and the first circular hole is arranged in the center along the width direction of the rectangular frame.

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

[0071] Specifically, when the bottom surface of the pole 2 is a circular structure, laser welding can be used to weld the bottom surface of the pole 2 to the pole lug. In addition, if ultrasonic welding is used to weld the bottom surface of the pole 2 to the pole lug, it is necessary to add a metal connecting piece to the bottom surface of the pole 2. The connecting metal piece extends from the bottom surface of the pole to the outside of the rectangular frame. After being welded to the pole lug of the pole core, the metal connecting piece is bent and the pole core is installed in the rectangular frame.

[0072] Reference Figure 3 In some embodiments, the mounting assembly 3 includes an external connecting piece 31 fixed to the pole 2, a first insulating member 32 arranged on the outside of the metal frame 1 to separate the external connecting piece 31 from the metal frame 1, and a second insulating member 33 arranged on the inside of the metal frame 1 to separate the pole 2 from the metal frame 1.

[0073] Specifically, the external connecting piece 31 is fixed to the pole 2, which increases the overall mechanical stability of the assembled battery; the first insulating member 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 arranged on the inner side of the metal frame 1 to isolate the pole 2 from the metal frame 1 to 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 pole 2 to prevent displacement due to vibration and other reasons during the use of the battery, thereby maintaining the stability of the 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 2. When the pole 2 is fixed to the external connecting piece 31, the first sealing ring 34 is squeezed between the metal frame 1 and the substrate 21 by the substrate 21 of the pole 2 in the vertical direction.

[0076] Specifically, the first sealing ring 34 is squeezed between the metal frame 1 and the substrate 21 by the substrate 21 of the pole 2 in the vertical direction, which is conducive to the first sealing ring 34 sealing the assembly gap between the metal frame 1 and the substrate 21, thereby forming an effective sealing barrier between the pole 2 and the mounting assembly 3, avoiding any possible leakage path, and thus achieving a better sealing effect.

[0077] In some embodiments, a first groove is provided on the second insulating member 33 for the substrate 21 to be embedded in, and a through hole is provided in the first groove for accommodating the first sealing ring 34. When the pole 2 is welded and fixed to the external connecting piece 31, the first sealing ring 34 is squeezed in the horizontal direction between the through hole of the second insulating member 33 and the first end 22 of the pole 2.

[0078] Specifically, the second insulating member 33 serves to isolate the pole 2 from the metal frame 1. The first groove design provides an embedding space for the substrate 21 of the pole 2, ensuring the stable fixation of the pole 2. At the same time, the through-hole within the first groove provides a space for the first sealing ring 34. The first sealing ring 34 plays an important sealing role in this design. When the substrate 21 is embedded in the first groove, the first sealing ring 34 is squeezed horizontally. This squeezing ensures that the first sealing ring 34 can effectively fill the gap between the first end 22 of the pole 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 be inserted into the pole mounting hole 15 . The mounting sleeve is inserted into the pole mounting hole 15 and abuts against the first sealing ring 34 .

[0080] The mounting sleeve extends into the pole mounting hole 15 and abuts against the first sealing ring 34, which can form a more reliable sealing system. At the same time, the mounting sleeve can isolate the direct contact between the two metal parts of the pole and the metal frame; when the pole 2 is assembled with the metal frame 1, the first sealing ring 34 is subjected to uniform pressure, fully filling the assembly gap between the two. The design of inserting the mounting sleeve on the first insulating member 32 into the pole mounting hole 15 can increase the structural stability of the entire assembly. This mechanical fixing method reduces the movement of components caused by vibration or external forces, thereby improving the overall durability and reliability of the battery; at the same time, since the first sealing ring 34 has been correctly positioned and extruded, the adjustment time during assembly is reduced and the production efficiency is improved. That is, the mounting sleeve provided on the first insulating member 32 and the abutment design with the first sealing ring 34 simplifies the assembly process while improving the sealing and structural stability of the battery assembly.

[0081] In some embodiments, a second groove is further provided on the first insulating member 32 for the external connecting piece 31 to be embedded in. The external connecting piece 31 is provided in the second groove, and the top surface of the external connecting piece 31 is higher than the top surface of the first insulating member 32 .

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

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

[0084] Specifically, the first end 22 of the pole 2 passes through the first sealing ring 34 and the mounting sleeve in sequence. This process ensures close contact between the pole 2, the first sealing ring 34 and the mounting sleeve. When the pole 2 is extended into the fixed mounting hole of the external connecting plate 31 and welded and fixed, this close contact forms an effective seal to prevent 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 notch structure provided at the blind hole.

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

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

[0088] The two step holes are just to ensure that there is a gap between the two. The gap is 0.3-1mm. If it is less than 0.3, the membrane will stick to the sheet, increasing the detonation pressure of the explosion-proof sheet, making it impossible for the explosion-proof sheet to meet the design requirements. If it is greater than 1, it cannot be arranged in the thickness direction of the battery frame, and the structural strength of the step supporting the explosion-proof sheet cannot meet the requirements.

[0089] Specifically, the design of the first step hole 161 and the second step hole 162 provides fixed space for the explosion-proof plate and the explosion-proof membrane, respectively. The explosion-proof membrane 42 is fixed at the first step hole 161, and the explosion-proof plate 41 is fixed at the second step hole 162. This fixing method is more reliable than mechanical fixation, and can ensure the stability of the explosion-proof plate 41 in extreme environments, and reduce the risk of failure caused by 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 plate 41. The gap is 0.3-1mm. If it is less than 0.3, the membrane will stick to the plate, increasing the detonation pressure of the explosion-proof plate, so that the explosion-proof plate 41 cannot meet the design requirements. If it is greater than 1, it cannot be arranged in the thickness direction of the metal frame 1, and the structural strength of the step supporting the explosion-proof plate 41 cannot meet the requirements.

[0090] In some embodiments, the sealing assembly 5 includes a sealing rivet 7 disposed at the liquid 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 a channel connecting the inside of the battery with the outside world and is used to inject electrolyte. The function of the sealing rivet 7 is to seal the injection hole 17 after injection to ensure that the electrolyte does not leak; the second sealing ring 8 is arranged 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] Reference Figure 7 Another embodiment of the present invention provides a battery, including the integrated battery frame 200, a pole core assembly 9 arranged in the accommodation space of the integrated battery frame 200, and two shell covers 10 respectively arranged on both sides of the integrated battery frame 200 to seal the accommodation space, wherein the shell cover 10 is welded and fixed to the metal frame 1 of the integrated battery frame 200.

[0093] Specifically, the integrated battery frame 200 serves as the supporting body of the battery. The head and tail ends of the integrated battery frame 200 are bent and welded to form a metal frame 1 with a hollow structure. The shell cover 10 is used to close the hollow structure of the integrated battery frame 200 to form a sealed accommodating area, which accommodates the pole core assembly 9. Through the coordinated connection between the integrated battery frame 200 and the shell cover 10, compared with the traditional steel shell cover plate structure in the prior art, the coordinated integration of the integrated battery frame 200 and the shell cover 10 provided in this application reduces the processing difficulty of the battery shell cover 10 while reducing the production cost of the shell cover 10 on the basis of being suitable for the assembly of extremely thin batteries.

[0094] In some embodiments, the pole core assembly 9 includes a pole core with a pole ear and a spacer that limits the pole core to the metal frame 1 of the integrated battery frame 200. The spacer is provided with a limiting hole for the pole ear to pass through. The pole ear passes through the limiting hole of the spacer and is fixedly connected to the pole column 2 in the integrated battery frame 200.

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

[0096] In some embodiments, the pole core assembly 9 further includes an insulating film 18 wrapping the pole core, and an end of the insulating film 18 is fixedly connected to the spacer.

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

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

[0099] Specifically, the insulating film 18 is usually made of a heat-resistant material. The insulating film 18 provided in the present application is made of a material selected from 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 replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated battery frame, characterized in that: include: A metal frame, comprising a rectangular frame having an accommodating space and a pole mounting hole, an explosion-proof valve hole, and a liquid injection hole provided on the rectangular frame; A pole, the pole comprising a base plate disposed within the metal frame, a first end disposed on one side of the base plate and extending to the outside of the metal frame through the pole mounting hole; An installation assembly, wherein the installation assembly fixes and seals the pole at the pole installation hole of the metal frame; an explosion-proof valve, disposed in the explosion-proof valve hole; and a sealing assembly, which is arranged in the liquid injection hole.

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

3. The 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. The integrated battery frame according to claim 2, characterized in that: The pole mounting hole is located on the second frame 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 further includes heat dissipation fins arranged 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 surface of the second frame or the fourth frame; When the pole mounting hole is located on the second frame or the fourth frame, the heat dissipation fin is located on the outer surface of the first frame.

6. The integrated battery frame according to claim 4, characterized in that: The metal frame further includes a rectangular mounting groove provided on at least one side surface of the rectangular frame along the width direction thereof, and the rectangular mounting groove is communicated with the accommodating space.

7. The integrated battery frame according to claim 1, characterized in that: The cross-section of the substrate and the first end of the pole is a rectangular structure. The pole also includes a second end. The pole mounting hole is a waist-shaped hole provided on the rectangular frame. The waist-shaped hole is eccentrically provided along the width direction of the rectangular frame.

8. The integrated battery frame according to claim 7, characterized in that: The substrate and the first end of the pole are integrally formed, the second end of the pole includes a first section integrally formed with the substrate 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. The integrated battery frame according to claim 1, characterized in that: The cross-sections of the substrate and the first end of the pole are circular structures. The pole mounting hole is a first circular hole provided on the rectangular frame. The first circular hole is arranged in the center along the width direction of the rectangular frame.

10. A battery, characterized in that: It comprises an integrated battery frame as described in any one of claims 1 to 9, a pole core assembly arranged in the accommodation space of the integrated battery frame, and two shell covers respectively arranged on both sides of the integrated battery frame to seal the accommodation space, and the shell covers are welded and fixed to the metal frame of the integrated battery frame.

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