Lead-carbon energy storage battery adopting an integrated self-locking and reinforcing rib synergistic swelling suppression structure

Abstract

This invention belongs to the field of energy storage battery technology, and in particular, it is a lead-carbon energy storage battery that adopts an integrated self-locking and reinforcing rib synergistic expansion suppression structure. It solves the problems of unstable packaging shell assembly, poor heat dissipation, and easy expansion and spontaneous combustion of the battery body. The battery includes a packaging shell and an internal battery body. The packaging shell has a T-shaped groove on its side. The assembly and overall reinforcement are achieved by inserting I-shaped ribs into the T-shaped grooves of adjacent shells. The shell is composed of a frame and a side wall mechanism. The side wall mechanism includes a reinforcing rib grid, a partition plate with honeycomb holes, and a protective rib. The honeycomb holes are filled with heat-absorbing material. Heat dissipation holes are formed between the partition plate and the protective rib. Spiral rib II is provided inside, which communicates with the through holes on the frame to enhance heat dissipation. The cover plate is fixed to the transverse rod inside the shell by a plug plate with a hook at the bottom. An air bladder is also provided inside the shell. When the battery expands, it squeezes the air bladder, which drives the transverse rod to move down and press the cover plate.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery technology, and in particular to a lead-carbon energy storage battery employing an integrated self-locking and reinforcing rib synergistic swelling suppression structure. Background Technology

[0002] Lead-carbon energy storage batteries, with their high capacity, long cycle life, and low cost, are widely used in new energy storage, smart grid peak shaving and valley filling, and backup power. With the rapid development of the energy storage industry, higher requirements are being placed on the safety, stability, and integration of lead-carbon energy storage batteries. In actual use, the battery body generates heat during charge-discharge cycles, accompanied by volume expansion, which poses a severe challenge to the structural strength and heat dissipation performance of the encapsulation casing.

[0003] Existing lead-carbon energy storage batteries mostly use single sheet metal bending for their packaging shells, resulting in limited structural strength. Under the expansion force of the battery body, they are prone to bending deformation, and even shell cracking, affecting the battery's sealing and safety. To improve structural strength, some packaging shells add reinforcing ribs, but traditional reinforcing ribs are mostly localized protrusions with limited bending resistance and cannot coordinate with the assembly function of the shell, leading to low integration efficiency of the battery module.

[0004] In the assembly process of battery modules, existing technologies mostly use bolt connections or snap-fit ​​splicing to fix adjacent batteries. Bolt connections require additional fastening tools, the assembly process is cumbersome, and bolts are prone to loosening, affecting connection stability; snap-fit ​​splicing methods have insufficient connection strength and cannot withstand the lateral forces caused by the expansion of the battery body, easily leading to separation at the splice joint. At the same time, after multiple batteries are assembled, the heat dissipation space between adjacent batteries is compressed. The heat dissipation structure of existing packaging shells is mostly a simple heat dissipation hole, which has low heat dissipation efficiency and cannot quickly dissipate the heat inside the battery. Long-term high-temperature environment will accelerate battery performance degradation and even lead to the risk of thermal runaway.

[0005] Furthermore, existing packaging covers are mostly connected to the housing using bolts or welded seals. Bolted connections are inconvenient for disassembly and assembly, hindering battery maintenance and repair; welded seals cannot be repeatedly disassembled and assembled, and the weld joints are prone to fatigue cracks due to the expansion and contraction of the battery body, affecting the seal. Additionally, the bottom of existing packaging covers is mostly a flat structure, fitting tightly to the mounting plate with limited space for heat dissipation, further exacerbating heat accumulation in the battery. Summary of the Invention

[0006] The purpose of this invention is to solve the shortcomings of existing lead-carbon energy storage batteries, such as unstable packaging shell assembly, poor heat dissipation, and easy expansion and spontaneous combustion of the battery body. The invention proposes an integrated self-locking and reinforcing rib structure to suppress expansion.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A lead-carbon energy storage battery with an integrated self-locking and reinforcing rib structure for swelling suppression includes an encapsulation shell and a battery body located inside the encapsulation shell. The encapsulation shell includes a housing and a cover plate. The side of the housing is provided with a T-shaped groove, and an I-shaped rib plate for connecting adjacent encapsulation shells and enhancing the bending resistance of the side of the housing is inserted into the T-shaped groove. The housing is provided with a fixing mechanism, which includes a snap-fit ​​groove on one side of the housing, a transverse rod that is slidably disposed in the vertical groove II inside the housing, and an insertion plate that is fixed to the bottom of the cover plate and extends into the snap-fit ​​groove. One side of the insertion plate is provided with a hook that engages with the transverse rod. The housing consists of a frame and a sidewall mechanism fixed in the side holes, the sidewall mechanism including a reinforcing mesh for enhancing the bending resistance of the housing sides.

[0008] In one possible design, the sidewall mechanism further includes a partition plate fixed to the side of the reinforcing mesh away from the battery body, and a protective rib plate fixed to the side of the partition plate away from the reinforcing mesh, the partition plate having honeycomb holes filled with heat-absorbing material.

[0009] In one possible design, the partition plate and the protective rib plate are provided with a plurality of semi-circular grooves on the side close to each other, and two adjacent semi-circular grooves form a heat dissipation hole. The side of the frame is provided with a through hole communicating with the heat dissipation hole. A spiral rib plate II is fixed in the heat dissipation hole, and the two ends of the spiral rib plate II extend into the two through holes respectively, for forcing airflow to generate secondary flow to improve heat dissipation efficiency.

[0010] In one possible design, the fixing mechanism further includes an airbag, a cylindrical tube, a piston rod, a sliding groove, a movable slider, and a connecting rod. The airbag is fixed to the side of the reinforcing mesh near the battery body. The cylindrical tube is embedded in the top inner wall of the side hole and communicates with the airbag through a venting hose. The piston rod is slidably connected to the cylindrical tube. The movable slider is slidably connected to the sliding groove. The movable slider has an inclined groove that slides with the transverse rod. The two ends of the connecting rod are respectively hinged to the top of the piston rod and the movable slider.

[0011] In one possible design, the airbag is filled with an inert gas.

[0012] In one possible design, the corner of the encapsulation shell is provided with an arc-shaped groove, one end of the through hole extends into the arc-shaped groove, and when multiple encapsulation shells are assembled side by side, adjacent arc-shaped grooves form a heat dissipation hole, and a spiral rib I is fixed in the heat dissipation hole.

[0013] In one possible design, the packaging shell has vertical grooves I on both sides, a U-shaped handle on the packaging shell, a slide block that is rotatably connected to the vertical groove I at the bottom of the vertical plate of the U-shaped handle, and a receiving groove for accommodating the horizontal plate of the U-shaped handle at the top of the cover plate.

[0014] In one possible design, an annular sealing strip is fixed to the top of the frame, and the reinforcing mesh consists of multiple vertical and horizontal reinforcing ribs that are fixedly connected to each other.

[0015] In one possible design, a flow guiding mechanism is fixed at the bottom of the frame. The flow guiding mechanism consists of two symmetrically arranged V-shaped plates. The cross-sectional area of ​​the flow channels at both ends of the flow guiding mechanism is larger than that of the middle flow channel. The flow guiding mechanism is provided with heat dissipation fins that extend to the top of the frame.

[0016] In one possible design, the airflow guiding mechanism generates a Venturi effect through changes in its flow channel cross-sectional area to drive airflow through the heat dissipation fins.

[0017] Beneficial effects: In this invention, the reinforcing rib mesh in the side wall mechanism adopts a mesh structure composed of vertical reinforcing ribs and horizontal reinforcing ribs, which can effectively improve the bending resistance of the side of the shell. At the same time, the interlocking of the I-shaped ribs and T-shaped grooves in the assembly mechanism not only realizes the assembly of adjacent encapsulation shells, but also further increases the bending resistance of the side of the encapsulation shell, preventing the encapsulation shell from deforming under the expansion force of the battery body. In this invention, the efficient dissipation of battery heat is achieved through the synergistic effect of multiple heat dissipation structures. The heat-absorbing material in the separator plate quickly absorbs the battery heat and conducts it to the heat dissipation holes. The spiral rib II in the heat dissipation holes forms a secondary flow to improve heat exchange efficiency. The spiral rib I in the heat dissipation holes formed after multiple batteries are assembled accelerates the flow of hot air. The flow guiding mechanism at the bottom of the shell forms a Venturi effect, driving air flow to accelerate the heat dissipation of the heat dissipation fins. Multi-path heat dissipation ensures that the heat generated by the battery body can be dissipated quickly, reducing the battery operating temperature and extending the battery life. In this invention, when the battery body expands, the horizontal rod is driven to move downward through the coordinated action of the airbag, cylindrical tube, piston rod, connecting rod, moving slider and horizontal rod, so that the horizontal rod is tightly engaged with the hook on the plug plate, and the cover plate is firmly fixed to the top of the shell to prevent the cover plate from being pushed open. This structure does not require an additional power source and relies on the expansion force of the battery body to achieve self-locking, thereby improving the safety and stability of the battery. In this invention, the airflow guiding mechanism at the bottom of the casing drives airflow through the Venturi effect, accelerating the heat dissipation of the heat sink fins. This solves the problem in the prior art where the bottom of the casing cannot effectively dissipate heat when it is attached to the mounting plate, further improving the overall heat dissipation effect of the battery.

[0018] In this invention, the insertion of T-shaped grooves and I-shaped ribs on the sides allows multiple battery casings to be easily assembled into a single unit, enhancing the side's resistance to bending. The combination of reinforcing mesh with heat-absorbing partitions and protective ribs strengthens the structure while providing a path for heat transfer. The cooperation between the heat dissipation holes and spiral ribs II improves heat dissipation efficiency during airflow. The battery's own expansion force drives the airbag and linkage mechanism, causing the transverse rod to automatically press down, securing the cover more tightly to the casing and preventing expansion from opening the cover. The airbag releases inert gas during accidental combustion, which can suppress the flame. After multiple casings are assembled, the spiral ribs I within the heat dissipation holes formed at the corners help maintain the overall heat dissipation effect. The bottom guiding mechanism promotes airflow through flow channel changes, improving the heat dissipation conditions at the bottom of the battery. These aspects work together to extend battery life and improve safety. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention, after the combination of multiple shells and cover plates. Figure 2 This is a three-dimensional structural diagram of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 3 This is a three-dimensional exploded structural diagram of the casing and cover plate of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 4 This is a three-dimensional exploded structural diagram of the casing of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic anti-swelling structure provided by the present invention. Figure 5 A three-dimensional exploded structural diagram of the protective rib plate, spiral rib plate II and frame of the lead-carbon energy storage battery with integrated self-locking and reinforcing rib synergistic expansion suppression structure provided by the present invention. Figure 6 This is a three-dimensional structural diagram of the reinforcing mesh of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 7 A three-dimensional exploded structural diagram of the reinforcing mesh, separator, and protective rib of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 8A three-dimensional cross-sectional view of the frame of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a three-dimensional exploded view of the movable slider and transverse rod of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic expansion suppression structure provided by the present invention. Figure 11 A three-dimensional exploded view of the moving slider, piston rod, and connecting rod of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic expansion suppression structure provided by the present invention. Figure 12 This is a three-dimensional structural diagram of the V-shaped plate and heat dissipation fins of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention. Figure 13 This is a three-dimensional structural diagram of the lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure provided by the present invention, after the combination of multiple shells and cover plates.

[0020] In the diagram: 1. Shell; 2. Cover plate; 3. Battery body; 4. Vertical groove I; 5. U-shaped handle; 6. Slide; 7. Receiving groove; 8. T-shaped groove; 9. I-shaped rib; 10. Arc-shaped groove; 11. Heat dissipation hole; 12. Spiral rib I; 13. Frame; 14. Side hole; 15. Reinforcing rib mesh; 16. Divider plate; 17. Protective rib; 18. Semi-circular groove; 19. Heat dissipation hole; 20. Through hole; 21. 21. Spiral rib II; 22. Airbag; 23. Snap-fit ​​groove; 24. Insert plate; 25. Hook; 26. Vertical groove II; 27. Horizontal rod; 28. Sliding groove; 29. ​​Moving slider; 30. Inclined groove; 31. Connecting end block; 32. Pin; 33. Connecting rod; 34. Cylindrical tube; 35. Piston rod; 36. Ventilation hose; 37. Heat dissipation fins; 38. V-shaped plate; 39. Vertical reinforcing rib; 40. Horizontal reinforcing rib. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In one embodiment: Refer to Figures 1-3This is a lead-carbon energy storage battery employing an integrated self-locking and reinforcing rib structure to suppress expansion, relating to the field of energy storage battery technology. It mainly includes a casing, which is a rectangular structure with an internal cavity for accommodating the battery body 3. The casing is primarily composed of a shell 1 and a cover plate 2. The cover plate 2 covers the top opening of the shell 1, and the two together achieve a seal. Multiple assembly mechanisms for laterally connecting adjacent casings are provided on the four outer sides of the shell 1 and the edge area of ​​the cover plate 2. The core components of the assembly mechanism are a T-shaped groove 8 and an I-shaped rib 9. The T-shaped groove 8 is machined vertically within the side wall of the casing, and its cross-section is an inverted T-shape. The I-shaped rib 9 is made of metal, and its cross-section is... The shape matches the T-shaped groove 8. The open end of the T-shaped groove 8 is equipped with an elastic dustproof sealing ring. The I-shaped rib 9 and the dustproof sealing ring are interference-fitted to achieve gap sealing. When two battery cells need to be assembled side by side, the I-shaped rib 9 on the side of one battery casing is aligned with the T-shaped groove 8 on the side of the other battery casing and inserted vertically to achieve mechanical docking and fixation. This plug-in mating method makes the sides of the two adjacent casings fit tightly together to form an integral structure. In this process, the I-shaped rib 9 not only serves as a connector, but the part embedded in the T-shaped groove 8 also constitutes an embedded reinforcing rib of the casing side wall, which directly improves the bending stiffness and deformation resistance of the side and helps to resist the outward tension generated by the expansion of the battery body 3.

[0023] Furthermore, referring to Figure 4 and Figure 6The housing 1 is the main load-bearing and heat dissipation component of the enclosure. The housing 1 is composed of a rectangular frame 13 and four independent sidewall mechanisms. The frame 13, serving as a supporting skeleton, is typically integrally molded from high-strength engineering plastics or composite materials using injection molding. Large side holes 14 are provided on all four sides of the frame 13. A set of sidewall mechanisms is fixedly installed within each side hole 14. These sidewall mechanisms constitute the functional composite of the housing 1's sidewalls, and from the inside out, they include a reinforcing rib mesh 15, partition plates 16, and protective ribs 17. The reinforcing rib mesh 15 is the base layer of the sidewall mechanism, formed by welding or integrally molding multiple vertical reinforcing ribs 39 and horizontal reinforcing ribs 40 that are perpendicularly intersecting, creating a dense mesh structure. This reinforcing rib mesh 15 is directly fixed to the side of the frame 13. The inner edge of the hole 14 significantly enhances the structural strength and stability of the side of the shell 1 in the two-dimensional plane, effectively suppressing planar deformation caused by internal pressure. On the side of the reinforcing mesh 15 facing away from the battery body 3, a partition plate 16 is fixed by adhesive or snap-fit. The partition plate 16 is a plate with a large number of hexagonal honeycomb holes evenly distributed inside. These honeycomb holes are filled with phase change material or solid material with high thermal conductivity and large heat capacity as heat-absorbing material. The function of the heat-absorbing material is to absorb and temporarily store the heat generated by the battery body 3 during operation, slowing down the temperature rise rate. On the side of the partition plate 16 facing away from the reinforcing mesh 15, a protective rib plate 17 is further fixed. The protective rib plate 17 is a plate with vertical ribs, mainly serving as physical protection and auxiliary flow guidance.

[0024] Furthermore, referring to Figure 5 and Figure 7To improve heat dissipation efficiency, multiple semi-circular grooves 18 are machined on the opposing surfaces of the partition plate 16 and the protective rib plate 17. When the partition plate 16 and the protective rib plate 17 are fixedly attached, the corresponding semi-circular grooves 18 combine to form a complete circular heat dissipation hole 19. The heat dissipation hole 19 penetrates the heat-absorbing material area within the partition plate 16. On the side wall of the frame 13, at a position approximately horizontally aligned with the heat dissipation hole 19, multiple through holes 20 are provided. The through holes 20 extend from the inner surface of the side wall of the frame 13 to the outer surface of the outer shell. A dustproof mesh cover can be detachably installed on the outer end of the hole 20. The two ends of the heat dissipation hole 19 are connected to two through holes 20 on the side wall of the frame 13, thus forming a horizontal airflow channel on the side of the housing 1. Crucially, a spiral rib II 21 is fixedly installed inside each heat dissipation hole 19. The spiral rib II 21 is a spirally twisted metal sheet, with both ends extending and fixed to the inner walls of the through holes 20 at both ends of the heat dissipation hole 19. The inner walls of the heat dissipation hole 19, through holes 20, and heat dissipation circular holes 11 can be coated with a dust-repellent coating to reduce dust adhesion. In practical applications, the heat dissipation channels are periodically purged and cleaned according to the cleanliness of the operating environment to maintain long-term heat dissipation performance. The airbag 22 is made of a temperature-resistant silicone rubber or fluororubber film with a temperature resistance greater than 100℃ and fatigue resistance to ensure reliability under long-term battery operating temperature and cyclic expansion.

[0025] Specifically, when air flows in the channel formed by the through hole 20 and the heat dissipation hole 19 due to temperature difference or external airflow, the air flowing through the spiral rib II 21 will be forced to rotate, generating a secondary flow perpendicular to the mainstream direction, namely the Dean vortex effect. This secondary flow can destroy the static thermal boundary layer formed between the air and the hole wall, increase the turbulence of the fluid, thereby strengthening the heat transfer process from the heat-absorbing material to the air and improving the passive heat dissipation efficiency of the heat dissipation hole 19.

[0026] Furthermore, referring to Figure 4 , Figure 5 , Figure 8 and Figure 9The cover plate 2 of the enclosure is tightly locked to the housing 1 by multiple sets of fixing mechanisms. The fixing mechanisms include a snap-fit ​​groove 23 set on the top of the housing 1, a plug-in plate 24 fixed to the bottom of the cover plate 2, and a transverse rod 27 set inside the housing 1. The snap-fit ​​groove 23 is a vertically downward blind groove that opens at the top edge of the frame 13. The plug-in plate 24 is made of a certain elastic engineering plastic and is vertically fixed to the lower surface edge of the cover plate 2. Its lower end is provided with an inwardly curved hook 25. Inside the housing 1, on the back side of the snap-fit ​​groove 23, there is a vertical groove II 26. The vertical groove II 26 is a vertically oriented slender channel that runs through all the snap-fit ​​groove 23 areas on the same side. The transverse rod 27 is slidably mounted on the vertical groove II 26. Inside 6, when installing the cover plate 2, align the cover plate 2 with the top of the housing 1, and insert each plug plate 24 into the corresponding snap-fit ​​slot 23. During the insertion process, the hook 25 at the lower end of the plug plate 24 will contact the transverse bar 27. Due to the obstruction of the transverse bar 27 and the elasticity of the plug plate 24 itself, the plug plate 24 will undergo a slight bending deformation until the hook 25 completely passes over the transverse bar 27 and reaches below it. At this time, the annular sealing strip pre-installed on the top of the frame 13 is compressed, generating an upward elastic restoring force on the cover plate 2. This restoring force pushes the cover plate 2 together with the plug plate 24 to move upward, so that the upper surface of the hook 25 is tightly engaged with the lower surface of the transverse bar 27, thereby completing the initial fixation of the cover plate 2.

[0027] Furthermore, referring to Figure 4 , Figure 7 and Figures 8-11To further address the challenges posed by the expansion of the battery body 3, the fixing mechanism integrates a self-locking triggering mechanism. This mechanism includes an airbag 22, a cylindrical tube 34, a piston rod 35, and a connecting rod 33 slider assembly. The airbag 22 is made of fatigue-resistant fluororubber and filled with inert gas. The airbag 22 is attached to the side surface of the reinforcing mesh 15 facing the battery body 3, i.e., between the battery body 3 and the side wall of the housing 1. It is also embedded in the top inner wall of the frame 13, above each side wall mechanism. There is at least one cylindrical tube 34, which is a cylindrical structure closed at the bottom. The bottom of the cylindrical tube 34 is connected to the inner cavity of the airbag 22 below through a flexible ventilation hose 36. The partition plate 16 and the protective rib plate 17 are provided with wire holes or slots for the ventilation hose 36 to pass through at corresponding positions. After the ventilation hose 36 is led out from the cylindrical tube 34, it passes through the wire holes on the protective rib plate 17 and the partition plate 16 in sequence, and communicates with the airbag 22 located inside the reinforcing mesh 15. There is a [missing information - likely a unit or section] inside the cylindrical tube 34. The sealable sliding piston rod 35 is located inside the housing 1, next to the vertical groove II 26, and has a horizontal sliding groove 28. A horizontally sliding movable slider 29 is placed in the sliding groove 28. An inclined groove 30 is machined in the center of the movable slider 29. The horizontal section of the transverse rod 27 passes through the inclined groove 30 and forms a sliding fit with the inclined groove 30. The inclination angle of the inclined groove 30 is 30°-60°. The fit clearance between the transverse rod 27 and the inclined groove 30 is 0.1-0.3mm to ensure that the transverse rod 27 slides smoothly along the inclined groove 30 without obvious movement. A connecting end block 31 is fixed on the side of the movable slider 29 near the battery body 3. The top end of the piston rod 35 extends upward and sealably into the sliding groove 28. The connecting end block 31 and the top end of the piston rod 35 are each rotatably connected to a connecting rod 33 through a pin 32. The other ends of the two connecting rods 33 are rotatably connected to each other through another pin 32, forming a linkage mechanism consisting of the piston rod 35, the connecting rod 33 and the movable slider 29. To improve the sensitivity and reliability of the linkage mechanism, the piston rod 35 and the inner wall of the cylindrical tube 34, as well as the moving slider 29 and the inner wall of the sliding groove 28, can be coated with a low-friction coefficient material such as polytetrafluoroethylene. The transverse rod 27 can be equipped with a lightweight return spring (not shown in the figure). When the pressure inside the airbag 22 decreases, the transverse rod 27 is assisted to quickly return to its original position, so as to facilitate the opening of the cover plate 2 for maintenance.

[0028] Specifically, when the battery body 3 bulges due to charging or malfunction, its side will compress the airbag 22 in contact with it. After the airbag 22 is compressed, the inert gas inside is compressed and forced into the cylindrical tube 34 through the ventilation hose 36. The gas entering the cylindrical tube 34 pushes the piston rod 35 to move upward. The upward movement of the piston rod 35 is transmitted through the two connecting rods 33 and converted into a horizontal thrust on the movable slider 29, driving the movable slider 29 to move along the sliding groove 28 away from the battery body 3, that is, to the outside of the outer shell. Since the transverse rod 27 passes through the inclined groove 30 of the movable slider 29, the horizontal movement of the movable slider 29 will force The transverse rod 27 slides along the inclined surface of the inclined groove 30. Because the transverse rod 27 is also vertically constrained by the vertical groove II 26, its movement trajectory is limited to vertical downward. Thus, the transverse rod 27 moves downward under the outward movement drive of the sliding slider 29. The downward movement of the transverse rod 27 lowers the engagement point of it with the hook 25 of the plug plate 24, which is equivalent to applying a downward locking force to the hook 25. This force, together with the upward elastic force provided by the sealing strip, significantly increases the locking force between the cover plate 2 and the housing 1, effectively resisting the tendency of the battery body 3 to expand and try to push open the cover plate 2, and achieving adaptive locking reinforcement.

[0029] Furthermore, referring to Figure 4 The inert gas inside the airbag 22 also has a safety protection function. In extreme cases, if the battery body 3 experiences thermal runaway and causes an internal fire, the flame or high temperature will burn the airbag 22. After the airbag 22 ruptures, the inert gas sealed inside it is immediately released into the sealed space inside the shell 1. The rapid filling of the inert gas will dilute and replace the oxygen in the cavity of the shell 1, causing the oxygen concentration to drop to a level that is insufficient to support combustion in a short time, thereby inhibiting or terminating the combustion reaction inside the battery.

[0030] Furthermore, referring to Figures 1-3 To optimize the overall heat dissipation of multiple battery cells after they are assembled into a module, an arc-shaped groove 10 is machined at each of the four outer corners of the package shell. One end of the through hole 20 on the side wall of the frame 13 is located in this arc-shaped groove 10. When four battery cells are arranged closely in a two-by-two manner, the arc-shaped grooves 10 at their four adjacent corners will together form a complete heat dissipation circular hole 11. Dustproof grilles can be detachably installed at both ends of the heat dissipation circular hole 11. A spiral rib plate I 12 can be fixedly installed at the central axis of this heat dissipation circular hole 11 using bolts. The structure of the spiral rib plate I 12 is similar to that of the spiral rib plate II 21, but its functional scale is larger. The hot air that gathers from the through holes 20 of each battery cell into the heat dissipation circular hole 11 will also be induced to generate rotational flow when flowing upward through the spiral rib plate I 12, which will enhance turbulence and improve the efficiency of hot air being discharged from the central area of ​​the module, thus avoiding the problem of poor heat dissipation in the central area when multiple batteries are stacked closely.

[0031] Furthermore, referring to Figure 2 and Figure 3 To facilitate the handling and arraying of individual battery cells, two vertical slots I4 are provided on the upper part of each of the two sides of the casing. The inner side of the lower end of the two vertical rods of a U-shaped handle 5 is rotatably connected to a slide 6 via a pivot. The two slides 6 are respectively embedded in the two vertical slots I4 on the same side of the casing and can slide up and down along the vertical slots I4. At the top of the cover plate 2, corresponding to the position of the crossbar of the U-shaped handle 5, there is a receiving slot 7. When it is necessary to move the battery, lift the U-shaped handle 5 upwards, and the slide 6 slides up to the top along the vertical slots I4. The operator can then easily carry the battery through the handle. After the battery is in place on the module rack, press down the U-shaped handle 5, and its crossbar falls into the receiving slot 7 of the cover plate 2, realizing the storage of the handle so that it does not occupy extra space and ensures the flat appearance of the module.

[0032] In another embodiment: Refer to Figure 12 At the bottom of the housing 1, the frame 13 also integrates multiple airflow guiding mechanisms. Each airflow guiding mechanism consists of two symmetrically placed V-shaped plates 38. The space between the two V-shaped plates 38 forms an airflow channel that is wide at both ends and narrow in the middle. Heat dissipation fins 37 are also installed inside the airflow guiding mechanism. The top of the heat dissipation fins 37 extends upward through the bottom of the frame 13 and into the housing 1, making thermal contact with the bottom of the battery body 3.

[0033] Specifically, when ambient air flows at the bottom of the module, the airflow passing through the guide mechanism will generate a Venturi effect due to the change in the cross-sectional area of ​​the channel. The airflow speed increases and the pressure decreases at the narrow throat of the channel, which will attract the air in front of and behind the guide mechanism to accelerate through the surface of the heat dissipation fins 37 and then flow out from the other end, realizing the efficient dissipation of heat at the bottom of the battery. This enhances the heat dissipation effect at the bottom of the battery and overcomes the disadvantage of the difficulty in heat dissipation at the bottom of the battery due to its contact with the mounting plate in traditional installation.

[0034] During long-term use, this device requires regular cleaning and lubrication every 3-6 months on the mating surfaces of the T-slot 8 and the I-shaped rib 9, as well as the mating surfaces of the horizontal rod 27 and the vertical groove II 26 and the inclined groove 30. The dustproof mesh / grid inside the through hole 20, heat dissipation hole 19, and heat dissipation round hole 11 should also be cleaned regularly to ensure unobstructed heat dissipation channels. The airbag 22 should be checked regularly for sealing; any abnormalities should be promptly addressed by replacing it to ensure stable operation of the device.

[0035] The method of using a lead-carbon energy storage battery with an integrated self-locking and reinforcing rib structure to suppress swelling includes the following steps: S1. First, place the battery body 3 inside the cover plate 2. The airbags 22 in the four side holes 14 of the housing 1 are respectively attached to the four sides of the battery body 3. The reinforcing mesh 15 is attached to the airbags 22. The reinforcing mesh 15 can strengthen the four sides of the cover plate 2 and improve the bending resistance of the sides of the cover plate 2. The protective rib plate 17 and the reinforcing mesh 15 are fixed with a partition plate 16. The partition plate 16 is provided with multiple honeycomb holes. The honeycomb holes are filled with heat-absorbing material to cool the battery body 3 when it gets hot. S2. In addition, the protective rib plate 17 and the partition plate 16 are provided with multiple semi-circular grooves 18 on the side that are close to each other. Two adjacent semi-circular grooves 18 form heat dissipation holes 19, and the two ends of the heat dissipation holes 19 are respectively connected to the corresponding through holes 20. Spiral ribs II 21 are installed in the heat dissipation holes 19 and the through holes 20. When the heat absorbed by the heat-absorbing material in the partition plate 16 is conducted to the heat dissipation holes 19, the spiral ribs II 21 force the air to flow in the through holes 20 to generate a rotation effect, forming a secondary flow such as Dean's vortex. The secondary flow will destroy the thermal boundary layer, increase the fluid turbulence, and thus improve the heat dissipation efficiency. S3. Next, the cover plate 2 is snapped onto the top of the housing 1. The insertion plate 24 at the bottom of the cover plate 2 extends into the snap-fit ​​groove 23. The insertion plate 24 is flexible. Therefore, during the process of the insertion plate 24 extending into the snap-fit ​​groove 23, the hook 25 abuts against the transverse bar 27 and bends the insertion plate 24 until the hook 25 is below the transverse bar 27. The annular sealing strip at the top of the housing 1 pushes the cover plate 2 to apply an upward pushing force, which enables the hook 25 to engage with the transverse bar 27, thus completing the encapsulation of the battery body 3 by the housing 1 and the cover plate 2. S4. When assembling multiple batteries, by pulling the U-shaped handle 5 upward, the slide 6 extends to the top inner wall of the vertical groove I4. The housing 1 and cover plate 2 can be moved by lifting the U-shaped handle 5, which facilitates the equidistant arrangement of multiple housings 1. After the arrangement is completed, the U-shaped handle 5 moves down to its original position. The horizontal plate at the top of the U-shaped handle 5 extends into the receiving groove 7 to store the U-shaped handle 5. The vertical plates on both sides of the U-shaped handle 5 fit against the sides of the housing 1, further improving the bending resistance of the sides of the housing 1. The I-shaped rib 9 is inserted between two adjacent housings 1 and cover plates 2. Within the T-shaped groove 8, the assembly of two adjacent shells 1 can be completed through the cooperation of the T-shaped groove 8 and the I-shaped rib 9. In addition, the I-shaped rib 9 can also improve the bending resistance of the side of the shell 1. The arc-shaped grooves 10 at one end of the four shells 1 can form a heat dissipation hole 11. The spiral rib I 12 is placed in the heat dissipation hole 11. When the hot air in the through hole 20 and the heat dissipation hole 19 extends into the heat dissipation hole 11, the spiral rib I 12 can also increase the upward turbulence of the fluid, thereby improving the heat dissipation efficiency and avoiding poor heat dissipation after multiple shells 1 are assembled. S5. After the housing 1 is placed on the mounting plate, the bottom of the housing 1 is provided with multiple flow guiding mechanisms. The cross-sectional area of ​​the flow channels at both ends of the flow guiding mechanism is larger than that of the middle flow channel, forming a Venturi effect. The pressure difference is generated by the change of the cross-sectional area of ​​the flow channel, which drives the air flow and accelerates the heat dissipation of the heat dissipation fins 37 at the bottom of the housing 1, thus avoiding the phenomenon that the bottom is attached to the mounting plate and cannot dissipate heat in the prior art. S6. When the side of the battery body 3 bulges or expands due to heat, the battery body 3 compresses the airbag 22. The inert gas in the airbag 22 is injected into the cylindrical tube 34 through the ventilation hose 36 and moves upward with the drive piston rod 35. The piston rod 35 drives the moving slider 29 to move outward through the cooperation of the connecting rod 33 and the pin 32. The moving slider 29 moves the horizontal rod 27 downward through the sliding cooperation of the horizontal rod 27 with the inclined groove 30 and the vertical groove II 26. In this way, the cover plate 2 can be firmly fixed to the top of the housing 1 through the engagement of the horizontal rod 27 and the hook 25, preventing the battery body 3 from expanding and pushing the cover plate 2 open. In addition, when the battery body 3 spontaneously combusts, the airbag 22 is burned, and the inert gas in the airbag 22 leaks into the housing 1, which will rapidly reduce the oxygen concentration and interrupt the combustion reaction due to lack of oxygen, thus inhibiting combustion.

[0036] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A lead-carbon energy storage battery employing an integrated self-locking and reinforcing rib synergistic swelling suppression structure, comprising a casing and a battery body (3) located within the casing, characterized in that, The encapsulation housing includes a housing (1) and a cover plate (2). The side of the housing (1) is provided with a T-shaped groove (8). An I-shaped rib (9) for connecting adjacent encapsulation housings and enhancing the bending resistance of the side of the housing (1) is inserted into the T-shaped groove (8). The housing (1) is provided with a fixing mechanism, which includes a snap-fit ​​groove (23) on one side of the housing (1), a transverse rod (27) that is longitudinally slidably disposed in the vertical groove II (26) inside the housing (1), and a plug-in plate (24) fixed to the bottom of the cover plate (2) and extending into the snap-fit ​​groove (23). The plug-in plate (24) is provided with a hook (25) on one side that engages with the transverse rod (27). The housing (1) consists of a frame (13) and a sidewall mechanism fixed in a side hole (14), the sidewall mechanism including a reinforcing rib grid (15) for enhancing the bending resistance of the side of the housing (1).

2. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 1, characterized in that, The sidewall mechanism also includes a partition plate (16) fixed to the side of the reinforcing mesh (15) away from the battery body (3), and a protective rib plate (17) fixed to the side of the partition plate (16) away from the reinforcing mesh (15). The partition plate (16) is provided with honeycomb holes filled with heat-absorbing material.

3. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 2, characterized in that, The partition plate (16) and the protective rib plate (17) are provided with a plurality of semi-circular grooves (18) on the side close to each other. Two adjacent semi-circular grooves (18) form a heat dissipation hole (19). The side of the frame (13) is provided with a through hole (20) communicating with the heat dissipation hole (19). A spiral rib plate II (21) is fixed in the heat dissipation hole (19). The two ends of the spiral rib plate II (21) extend into the two through holes (20) respectively, which are used to force air flow to generate secondary flow to improve heat dissipation efficiency.

4. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 3, characterized in that, The fixing mechanism also includes an airbag (22), a cylindrical tube (34), a piston rod (35), a sliding groove (28), a movable slider (29), and a connecting rod (33). The airbag (22) is fixed to the reinforcing mesh (15) on one side near the battery body (3). The cylindrical tube (34) is embedded in the top inner wall of the side hole (14) and communicates with the airbag (22) through a ventilation hose (36). The piston rod (35) is slidably connected to the cylindrical tube (34). The movable slider (29) is slidably connected to the sliding groove (28). The movable slider (29) is provided with an inclined groove (30) that slides with the transverse rod (27). The two ends of the connecting rod (33) are respectively hinged to the top of the piston rod (35) and the movable slider (29).

5. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 4, characterized in that, The airbag (22) is filled with inert gas.

6. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 5, characterized in that, The corner of the encapsulation shell is provided with an arc-shaped groove (10), and one end of the through hole (20) extends into the arc-shaped groove (10). When multiple encapsulation shells are assembled side by side, the adjacent arc-shaped grooves (10) form a heat dissipation hole (11), and a spiral rib plate I (12) is fixed in the heat dissipation hole (11).

7. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 1, characterized in that, The packaging shell has vertical grooves I (4) on both sides, and a U-shaped handle (5) is provided on the packaging shell. The bottom of the vertical plate of the U-shaped handle (5) is provided with a slide block (6) that is slidably connected to the vertical groove I (4). The top of the cover plate (2) is provided with a receiving groove (7) for accommodating the horizontal plate of the U-shaped handle (5).

8. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 2, characterized in that, The top of the frame (13) is fixed with an annular sealing strip, and the reinforcing mesh (15) is composed of multiple vertical reinforcing ribs (39) and horizontal reinforcing ribs (40) that are fixedly connected to each other.

9. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 1, characterized in that, The bottom of the frame (13) is fixed with a flow guiding mechanism, which consists of two symmetrically arranged V-shaped plates (38). The cross-sectional area of ​​the flow channels at both ends of the flow guiding mechanism is larger than that of the middle flow channel. The flow guiding mechanism is provided with heat dissipation fins (37) that extend to the top of the frame (13).

10. The lead-carbon energy storage battery with an integrated self-locking and reinforcing rib synergistic swelling suppression structure according to claim 9, characterized in that, The flow guiding mechanism generates a Venturi effect through the change of its flow channel cross-sectional area to drive airflow through the heat dissipation fins (37).

Images