Fastening device before charging of lead-acid storage battery

Abstract

The invention discloses a lead-acid storage battery before-charging fastening device which comprises a buckle structure, the buckle structure comprises a transverse plate and two vertical plates, the two vertical plates are symmetrically arranged at the two ends of the transverse plate respectively, and inverted buckle protrusions are fixed to the lower ends of the vertical plates; an elastic piece is arranged between the two vertical plates, and the elastic piece is arranged below the transverse plate; the problem that in the charging process of the lead-acid storage battery, the rubber band is prone to breakage or is stretched to lose tension, and the tightening effect is not achieved is solved; the buckle structure is used for replacing a rubber band, the function is kept unchanged, operation is more convenient, the buckle structure is used, the problems that rubber band tying operation is difficult, and rubber band tying becomes soft easily are fundamentally solved, and therefore troubles brought by the technology to production are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of lead-acid battery charging, and in particular relates to a fastening device before charging of a lead-acid battery. Background Art

[0002] At present, with the breakthrough of human beings in battery technology, the specific energy of batteries is constantly improving. In real life, more and more lead-acid batteries are used in supporting electrical equipment, such as UPS power supplies, base stations, wind turbines, etc. Therefore, the popularization of lead-acid batteries has greatly facilitated our lives and improved our quality of life.

[0003] At the same time, market personnel reported that after some batteries were used for a period of time, the internal resistance increased abnormally, the self-discharge was high, and the capacity was insufficient. After analysis, the main reason was that the plates were not properly formed during the charging process. Further investigation revealed that during the battery charging process, the rubber bands aged, were not tied tightly, and the process sheets were not properly covered, causing the batteries to lose too much water.

[0004] There is a rubber band action in the early stage of the lead-acid battery charging process. The quality of the rubber band has the following effects on the performance of the valve-regulated lead-acid battery during the charging process:

[0005] 1) During the charging and discharging process, the protective rubber cap valve should not be tilted or popped off.

[0006] 2) Control the exhaust volume during the charging and discharging process to make the battery charging and discharging process smooth.

[0007] 3) Ensure that after the battery is fully charged, there is a certain negative pressure inside the battery to meet the concave requirements of the rubber cap valve.

[0008] Therefore, for valve-regulated lead-acid batteries, the quality of the rubber band is very important to the battery capacity and life.

[0009] The above-mentioned prior art solutions have the following defects: the existing method of tying rubber bands is to put the rubber bands on the battery, generally 2 to 3 rubber bands are put on, and the process surface is pressed tightly. Because the rubber bands are put on one by one by hand, this method is difficult to operate and has a large workload;

[0010] Since the rubber bands are reused and will break or become weak from time to time due to excessive pulling, they need to be replaced from time to time, which causes great trouble to production. Summary of the invention

[0011] The present invention aims to solve the problems in the prior art that the rubber bands may break or become weak from time to time and need to be replaced from time to time, and the rubber bands are operated manually, which is labor-intensive. The present invention proposes the following technical solutions:

[0012] A fastening device for a lead-acid battery before charging comprises a buckle structure, wherein the buckle structure comprises a horizontal plate and a vertical plate, wherein two vertical plates are provided, and the two vertical plates are symmetrically arranged at the two ends of the horizontal plate, and an undercut protrusion is fixed at the lower end of the vertical plate; an elastic member is provided between the two vertical plates, and the elastic member is provided below the horizontal plate.

[0013] As a preferred embodiment of the above technical solution, a lead-acid battery is also included, wherein a battery shell cover is fixed to the upper end of the lead-acid battery, an undercut groove is reserved between the lower end of the battery shell cover and the lead-acid battery, and the undercut protrusion is engaged with the undercut groove.

[0014] A battery cover is provided at the upper end of the lead-acid battery, and an undercut groove is provided between the battery cover and the lead-acid battery body, and the undercut groove cooperates with the undercut protrusion to achieve snap connection. This design not only enhances the stability of the connection between the snap structure and the battery, but also facilitates the installation and removal of the snap structure, while effectively preventing electrolyte leakage, improving the safety of use, and making the battery have better structural characteristics when subjected to external forces, meeting charging requirements, and extending the service life.

[0015] As a preferred embodiment of the above technical solution, the undercut grooves are arranged on both side edges of the battery shell cover, the undercut grooves are extended along the length direction of the battery shell cover, the lower end of the undercut protrusion is provided with a wedge inclined surface, the undercut protrusion protrudes into the vertical plate, and the two undercut protrusions are arranged opposite to each other.

[0016] These undercut grooves extend along the length of the shell cover and are arranged in parallel on both sides of the shell cover. The design of the undercut grooves helps to enhance the stability and connection strength of the undercut protrusions and the battery shell cover. At the same time, it is easy to disassemble and assemble; the undercut protrusions are provided with a wedge inclined surface at the lower end, and this structure makes it easy to operate when the undercut protrusions are connected to the battery shell cover. In addition, the two undercut protrusions are arranged opposite to each other, which not only increases the symmetry of the structure, but also ensures the uniformity of force.

[0017] As a preferred embodiment of the above technical solution, the upper end of the vertical plate is slidably connected to the horizontal plate along the length direction of the horizontal plate, and a tension spring is connected between the vertical plate and the horizontal plate.

[0018] The upper end of the vertical plate is slidably connected to the horizontal plate in the length direction to ensure that the vertical plate can move smoothly along the horizontal plate. The vertical plate and the horizontal plate are connected by a tension spring, so that the vertical plate can be extended and adjusted in width when pulled, which is suitable for batteries of different specifications and models. The vertical plate is tightened along the length direction of the horizontal plate through the tension spring, so that the vertical plate is tightly clamped on both sides of the battery, which improves the safety and convenience of use.

[0019] As a preferred embodiment of the above technical solution, a sliding rod is fixed on the upper end of the vertical plate, and a limiting hole for sliding and inserting the sliding rod is opened on the end surface of the horizontal plate, and two sliding rods are arranged in parallel.

[0020] The upper end of the vertical plate is connected to a sliding rod in a fixed manner and is arranged horizontally in the structure. The end surface of the horizontal plate is specially provided with a limit hole adapted to the sliding rod. The sliding rod is slidably inserted into the limit hole to achieve a sliding connection between the horizontal plate and the vertical plate. There are two parallel sliding rods, which not only ensures the stability of the connection, but also facilitates the sliding adjustment of the horizontal plate on the vertical plate, thereby improving the flexibility and practicality of the overall structure.

[0021] As a preferred embodiment of the above technical solution, a blind hole is opened at the end of the transverse plate, the tension spring is arranged in the blind hole, and one end of the tension spring is fixedly connected to the bottom of the blind hole.

[0022] A tension spring is cleverly arranged in the blind hole. Due to its elastic characteristics, one end of the tension spring is firmly fixed to the bottom of the blind hole to ensure that it will not fall off or shift easily, thereby ensuring that the tension spring can continuously and stably exert its effectiveness and provide lasting elastic tension for the horizontal plate to pull the vertical plate to reset.

[0023] As a preferred embodiment of the above technical solution, a limiting block is fixed at the end of the sliding rod, and the limiting block is slidably engaged in the limiting hole; and reinforcing ribs are fixed on the upper surface of the transverse plate.

[0024] A limit block is fixed at the end of the slide bar, and the limit block can slide along the limit hole to realize the limit function of the slide bar, prevent the slide bar from escaping from the limit hole, and effectively prevent the slide bar from deflecting or falling off during use, ensuring safety. A reinforcing rib is also fixed on the upper surface of the horizontal plate to improve the structural strength of the entire device.

[0025] As a preferred embodiment of the above technical solution, the elastic member includes a rubber band body and a clamping plate, the inner wall of the vertical plate is provided with a receiving groove, and the clamping plate embedded in the inner wall surface of the vertical plate presses the end of the rubber band body into the receiving groove.

[0026] The core component of the elastic member is a rubber band body, which is used to press the upper end surface of the battery shell cover. The rubber band body has good elasticity and durability. The end of the rubber band body is firmly pressed into a specific receiving groove by a clamping plate, thereby ensuring the stability and reliability of the rubber band body during use. Through this structural setting, the elastic member can effectively realize its connection and fixing function, and is easy to disassemble and replace, convenient to operate, and reduces maintenance costs.

[0027] As a preferred embodiment of the above technical solution, the clamping plate is arranged in the accommodating groove, one end of the clamping plate is hinged to the vertical plate, a clamping block is fixed to the other end of the clamping plate, a clamping groove cooperating with the clamping block is provided on the surface of the vertical plate, and an anti-slip protrusion is provided on the inner wall of the clamping plate which fits with the surface of the rubber band body.

[0028] The clamping plate is set in the receiving groove, and one end of it is hinged with the vertical plate to achieve a movable connection. A clamping block is fixed at the other end, and a clamping groove that cooperates with the clamping block is specially provided on the surface of the vertical plate to achieve the limited fixation of the clamping plate. The inner wall of the clamping plate is specially designed with anti-slip protrusions, which fit tightly with the surface of the rubber band body, thereby effectively preventing the rubber band from sliding or falling off.

[0029] As a preferred embodiment of the above technical solution, the elastic member includes a compression spring and a pressure plate, and a plurality of the compression springs are provided. An array of the plurality of compression springs is fixed to the upper surface of the pressure plate, and an upper end of the compression spring is fixed to the transverse plate.

[0030] The elastic member includes a compression spring and a pressure plate, wherein a plurality of compression springs are provided, and these compression springs are firmly fixed on the upper surface of the pressure plate in the form of an array. The upper ends of these compression springs are fixed to the cross plate, and together they form a stable elastic component for pressing the upper end surface of the battery shell cover. The compression spring has good elasticity and durability, and maintains the compactness and durability of the structure.

[0031] As a preferred embodiment of the above technical solution, a guide sleeve is fixed on the surface of the pressure plate, the lower end of the compression spring is fixed in the guide sleeve, the guide sleeve and the compression spring are arranged in a one-to-one correspondence, and a guide hole arranged in a one-to-one correspondence with the guide sleeve is opened on the lower surface of the cross plate, and the upper end of the guide sleeve is slidably inserted in the guide hole;

[0032] A guide sleeve is fixed on the surface of the pressure plate, and a guide hole matching the guide sleeve is provided on the lower surface of the cross plate. The upper end of the guide sleeve can be slidably inserted in the guide hole, and the compression spring is arranged in the guide sleeve, which not only protects the compression spring but also ensures the stability and accuracy of the pressure plate during movement.

[0033] As a preferred embodiment of the above technical solution, the pressing plate is arranged in parallel with the transverse plate, and a rubber gasket is arranged on the lower surface of the pressing plate.

[0034] The pressing plate is arranged in parallel with the transverse plate, and the two form a stable elastic support structure. The rubber gasket arranged on the lower surface of the pressing plate not only ensures good contact with the working surface of the battery shell cover, but also greatly enhances the overall stability and durability.

[0035] The beneficial effects of the present invention are:

[0036] (1) When installing, press the buckle structure from top to bottom and clamp it on the surface of the battery shell cover, so that the horizontal plate cooperates with the elastic member to press the upper end surface, and the undercut protrusion at the lower end of the vertical plate is directly clamped into the undercut groove between the battery and the shell cover. When disassembling, the buckle structure slides horizontally and separates from the battery shell cover, and slides out from the side along the undercut groove. This buckle structure is convenient for installation and disassembly, and fundamentally solves the problem of cumbersome installation and disassembly.

[0037] (2) It not only solves the problem that the rubber band is easy to break or loses tension during the charging process of the lead-acid battery, and fails to play the role of tightening; it also replaces the rubber band with a buckle structure, and the function remains unchanged, and the operation is more convenient. The use of the buckle structure fundamentally solves the problem that the rubber band is difficult to operate and easy to become weak, thereby reducing the troubles caused by this process to production. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 What is shown is a schematic diagram of the three-dimensional structure of the buckle structure in the present application and the lead-acid battery;

[0039] Figure 2 Shown is an exploded view of the fastening device before charging of the lead-acid battery in the present application;

[0040] Figure 3 Shown is a side view schematic diagram of the structure of the present application;

[0041] Figure 4 The figure shows a three-dimensional structural schematic diagram of the elastic member in Embodiment 1;

[0042] Figure 5 What is shown is a side view schematic diagram of the structure in Embodiment 1;

[0043] Figure 6 The figure shows a three-dimensional structural schematic diagram of the clamping plate in Example 1;

[0044] Figure 7 The example 1 is shown Figure 6 A schematic diagram of the enlarged three-dimensional structure;

[0045] Figure 8 The figure shows a schematic side view of a partially cut-away structure of the buckle structure in Embodiment 2;

[0046] Fig. 9 The example 2 is shown in Figure 8 A schematic diagram of the enlarged three-dimensional structure;

[0047] Fig.10 What is shown is a real picture of the rubber band used before the improvement of the present application.

[0048] Attached figures: 100, snap-fit ​​structure; 110, horizontal plate; 111, limiting hole; 113, blind hole; 115, reinforcing rib; 117, guide hole; 130, vertical plate; 131, sliding rod; 133, tension spring; 135, limiting block; 137, accommodating groove; 139, snap-fit ​​groove; 150, undercut protrusion; 300, elastic member; 310, rubber band body; 330, clamping plate; 331, clamping block; 350, compression spring; 370, pressure plate; 371, guide sleeve; 500, lead-acid battery; 510, battery shell cover; 530, undercut groove. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0050] Example 1

[0051] refer to Figure 1-Figure 7 A pre-charging fastening device for a lead-acid battery includes a buckle structure 100, wherein the buckle structure 100 includes a horizontal plate 110 and a vertical plate 130. Two vertical plates 130 are provided, and the two vertical plates 130 are symmetrically arranged at the two ends of the horizontal plate 110, and an undercut protrusion 150 is fixed to the lower end of the vertical plate 130; an elastic member 300 is arranged between the two vertical plates 130, and the elastic member 300 is arranged below the horizontal plate 110.

[0052] The buckle structure 100 includes a horizontal plate 110 and vertical plates 130 arranged at both ends of the horizontal plate 110. An undercut protrusion 150 is fixed at the lower end of the vertical plate 130, which is used to cooperate with the lower end of the battery shell cover 510 to achieve fixation. An elastic member 300 is provided between the two vertical plates 130. The elastic member 300 is located below the horizontal plate 110 to provide elastic force after the snap connection, so that it can automatically adapt and tightly fit the battery shell cover 510 during the connection and separation process, so that the buckle structure 100 is tightly connected to the battery shell cover 510 without shaking, ensuring the stability and reliability of the connection, and can be quickly and reliably connected.

[0053] As a preferred embodiment of the above technical solution, a lead-acid battery 500 is also included, wherein a battery shell cover 510 is fixed to the upper end of the lead-acid battery 500, an undercut groove 530 is reserved between the lower end of the battery shell cover 510 and the lead-acid battery 500, and the undercut protrusion 150 is engaged with the undercut groove 530.

[0054] refer to Figure 1-Figure 2 A battery shell cover 510 is disposed at the upper end of the lead-acid battery 500, and an undercut groove 530 is disposed between the battery shell cover 510 and the lead-acid battery 500 body, and the undercut groove 530 cooperates with the undercut protrusion 150 to achieve snap connection. This design not only enhances the stability of the connection between the snap structure 100 and the battery, but also facilitates the installation and removal of the snap structure 100, while effectively preventing electrolyte leakage, improving the safety of use, and making the battery have better structural characteristics when subjected to external force, meeting the charging requirements, and extending the service life.

[0055] As a preferred embodiment of the above technical solution, the undercut grooves 530 are arranged on both side edges of the battery shell cover 510, and the undercut grooves 530 are extended along the length direction of the battery shell cover 510. The lower end of the undercut protrusion 150 is provided with an inclined surface of a wedge block, and the undercut protrusion 150 protrudes into the vertical plate 130, and the two undercut protrusions 150 are arranged opposite to each other.

[0056] refer to Figure 2-Figure 3 , these undercut grooves 530 extend along the length direction of the shell cover and are arranged in parallel on both sides of the shell cover. The design of the undercut grooves 530 helps to enhance the stability and connection strength of the undercut protrusion 150 and the battery shell cover 510. At the same time, it is easy to disassemble and assemble; the undercut protrusion 150 is provided with a wedge inclined surface at the lower end, and this structure makes it easy to operate when the undercut protrusion 150 is engaged with the battery shell cover 510. In addition, the two undercut protrusions 150 are arranged opposite to each other, which not only increases the symmetry of the structure, but also ensures the uniformity of force.

[0057] As a preferred embodiment of the above technical solution, the upper end of the vertical plate 130 is slidably connected along the length direction of the horizontal plate 110 , and a tension spring 133 is connected between the vertical plate 130 and the horizontal plate 110 .

[0058] refer to Figure 1-Figure 2 The upper end of the vertical plate 130 is slidably connected to the horizontal plate 110 in the length direction, ensuring that the vertical plate 130 can move smoothly along the horizontal plate 110. The vertical plate 130 and the horizontal plate 110 are connected by a tension spring 133, so that the vertical plate 130 can be extended and adjusted in width when pulled, which is suitable for batteries of different specifications and models. The vertical plate 130 is tightened along the length direction of the horizontal plate 110 by the tension spring 133, so that the vertical plate 130 is tightly clamped on both sides of the battery. The safety and convenience of use are improved.

[0059] As a preferred embodiment of the above technical solution, a slide bar 131 is fixed to the upper end of the vertical plate 130 , and a limiting hole 111 for the slide bar 131 to be slidably inserted is opened on the end surface of the horizontal plate 110 , and two slide bars 131 are arranged in parallel.

[0060] refer to Figure 2 The upper end of the vertical plate 130 is connected to a sliding rod 131 in a fixed manner and is horizontally arranged in structure. The end surface of the horizontal plate 110 is specially provided with a limiting hole 111 adapted to the sliding rod 131. The sliding rod 131 is slidably inserted into the limiting hole 111 to achieve a sliding connection between the horizontal plate 110 and the vertical plate 130. There are two parallel sliding rods 131, and such a structure not only ensures the stability of the connection, but also facilitates the sliding adjustment of the horizontal plate 110 on the vertical plate 130, thereby improving the flexibility and practicality of the overall structure.

[0061] As a preferred embodiment of the above technical solution, a blind hole 113 is opened at the end of the transverse plate 110 , and the tension spring 133 is arranged in the blind hole 113 , and one end of the tension spring 133 is fixedly connected to the bottom of the blind hole 113 .

[0062] refer to Figure 1-Figure 2 A tension spring 133 is cleverly arranged in the blind hole 113. Due to its elastic characteristics, one end of the tension spring 133 is firmly fixed to the bottom of the blind hole 113 to ensure that it will not fall off or shift easily, thereby ensuring that the tension spring 133 can continuously and stably exert its effectiveness, providing a lasting elastic tension for the horizontal plate 110, which is used to pull the vertical plate 130 to reset.

[0063] As a preferred embodiment of the above technical solution, a limiting block 135 is fixed at the end of the sliding rod 131 , and the limiting block 135 is slidably engaged in the limiting hole 111 ; and a reinforcing rib 115 is fixed on the upper surface of the transverse plate 110 .

[0064] refer to Figure 2 A stopper 135 is fixed at the end of the slide bar 131, and the stopper 135 can slide along the stopper hole 111, thereby realizing the stopper function of the slide bar 131, preventing the slide bar 131 from being separated from the stopper hole 111, and effectively preventing the slide bar 131 from being offset or falling off during use, thereby ensuring safe use. A reinforcing rib 115 is also fixed on the upper surface of the horizontal plate 110 to improve the structural strength of the entire device.

[0065] As a preferred embodiment of the above technical solution, the elastic member 300 includes a rubber band body 310 and a clamping plate 330. The inner wall of the vertical plate 130 is provided with a receiving groove 137. The clamping plate 330 embedded in the inner wall surface of the vertical plate 130 presses the end of the rubber band body 310 into the receiving groove 137.

[0066] refer to Figure 4-Figure 7 The core component of the elastic member 300 is the rubber band body 310, which is used to press the upper end surface of the battery shell cover 510. The rubber band body 310 has good elasticity and durability. The end of the rubber band body 310 is firmly pressed into the specific receiving groove 137 by the equipped clamping plate 330, thereby ensuring the stability and reliability of the rubber band body 310 during use. Through this structural setting, the elastic member 300 can effectively realize its connection and fixing function, and is easy to disassemble and replace, convenient to operate, and reduces maintenance costs.

[0067] As a preferred embodiment of the above technical solution, the clamping plate 330 is arranged in the accommodating groove 137, one end of the clamping plate 330 is hinged to the vertical plate 130, and a clamping block 331 is fixed to the other end of the clamping plate 330. A clamping groove 139 that cooperates with the clamping block 331 is opened on the surface of the vertical plate 130, and an anti-slip protrusion that fits the surface of the rubber band body 310 is provided on the inner wall of the clamping plate 330.

[0068] refer to Figure 6-Figure 7 The clamping plate 330 is arranged in the receiving groove 137, and is hinged to the vertical plate 130 at one end to realize a movable connection. A clamping block 331 is fixed at the other end, and a clamping groove 139 is specially provided on the surface of the vertical plate 130 to cooperate with the clamping block 331, so as to realize the limited fixing of the clamping plate 330. The inner wall of the clamping plate 330 is specially designed with anti-slip protrusions, which are tightly fitted with the surface of the rubber band body 310, thereby effectively preventing the rubber band from sliding or falling off.

[0069] Example 2

[0070] refer to Figure 1-Figure 3 to Figure 8-Figure 9 A pre-charging fastening device for a lead-acid battery includes a buckle structure 100, wherein the buckle structure 100 includes a horizontal plate 110 and a vertical plate 130. Two vertical plates 130 are provided, and the two vertical plates 130 are symmetrically arranged at the two ends of the horizontal plate 110, and an undercut protrusion 150 is fixed to the lower end of the vertical plate 130; an elastic member 300 is arranged between the two vertical plates 130, and the elastic member 300 is arranged below the horizontal plate 110.

[0071] refer to Figure 1-Figure 3 The buckle structure 100 includes a horizontal plate 110 and vertical plates 130 disposed at both ends of the horizontal plate 110. An undercut protrusion 150 is fixed at the lower end of the vertical plate 130. An elastic member 300 is disposed between the two vertical plates 130. The elastic member 300 is located below the horizontal plate 110 to provide elastic force after the snap connection, so that the buckle structure 100 can automatically adapt and tightly fit the battery shell cover 510 during the connection and separation process, so that the buckle structure 100 is tightly connected to the battery shell cover 510 without shaking, ensuring the stability and reliability of the connection, and can be quickly and reliably connected.

[0072] As a preferred embodiment of the above technical solution, a lead-acid battery 500 is also included, wherein a battery shell cover 510 is fixed to the upper end of the lead-acid battery 500, an undercut groove 530 is reserved between the lower end of the battery shell cover 510 and the lead-acid battery 500, and the undercut protrusion 150 is engaged with the undercut groove 530.

[0073] refer to Figure 1-Figure 3A battery shell cover 510 is disposed at the upper end of the lead-acid battery 500, and an undercut groove 530 is disposed between the battery shell cover 510 and the lead-acid battery 500 body, and the undercut groove 530 cooperates with the undercut protrusion 150 to achieve snap connection. This design not only enhances the stability of the connection between the snap structure 100 and the battery, but also facilitates the installation and removal of the snap structure 100, while effectively preventing electrolyte leakage, improving the safety of use, and making the battery have better structural characteristics when subjected to external force, meeting the charging requirements, and extending the service life.

[0074] As a preferred embodiment of the above technical solution, the undercut grooves 530 are arranged on both side edges of the battery shell cover 510, and the undercut grooves 530 are extended along the length direction of the battery shell cover 510. The lower end of the undercut protrusion 150 is provided with an inclined surface of a wedge block, and the undercut protrusion 150 protrudes into the vertical plate 130, and the two undercut protrusions 150 are arranged opposite to each other.

[0075] These undercut grooves 530 extend along the length of the shell cover and are arranged in parallel on both sides of the shell cover. The design of the undercut grooves 530 helps to enhance the stability and connection strength of the undercut protrusion 150 and the battery shell cover 510. At the same time, it is easy to disassemble and assemble; the undercut protrusion 150 is provided with a wedge inclined surface at the lower end, and this structure makes it easy to operate when the undercut protrusion 150 is engaged with the battery shell cover 510. In addition, the two undercut protrusions 150 are arranged opposite to each other, which not only increases the symmetry of the structure, but also ensures the uniformity of force.

[0076] As a preferred embodiment of the above technical solution, the upper end of the vertical plate 130 is slidably connected along the length direction of the horizontal plate 110 , and a tension spring 133 is connected between the vertical plate 130 and the horizontal plate 110 .

[0077] The upper end of the vertical plate 130 is slidably connected to the horizontal plate 110 in the length direction, ensuring that the vertical plate 130 can move smoothly along the horizontal plate 110. The vertical plate 130 and the horizontal plate 110 are connected by a tension spring 133, so that the vertical plate 130 can be extended and adjusted in width when pulled, which is suitable for batteries of different specifications and models. The vertical plate 130 is tightened along the length direction of the horizontal plate 110 by the tension spring 133, so that the vertical plate 130 is tightly clamped on both sides of the battery, thereby improving the safety and convenience of use.

[0078] As a preferred embodiment of the above technical solution, a slide bar 131 is fixed to the upper end of the vertical plate 130 , and a limiting hole 111 for the slide bar 131 to be slidably inserted is opened on the end surface of the horizontal plate 110 , and two slide bars 131 are arranged in parallel.

[0079] The upper end of the vertical plate 130 is connected to the sliding rod 131 in a fixed manner and is arranged horizontally in structure. The end surface of the horizontal plate 110 is specially provided with a limiting hole 111 adapted to the sliding rod 131. The sliding rod 131 is slidably inserted into the limiting hole 111 to achieve the sliding connection between the horizontal plate 110 and the vertical plate 130. There are two parallel sliding rods 131, and such a structure not only ensures the stability of the connection, but also facilitates the sliding adjustment of the horizontal plate 110 on the vertical plate 130, thereby improving the flexibility and practicality of the overall structure.

[0080] As a preferred embodiment of the above technical solution, a blind hole 113 is opened at the end of the transverse plate 110 , and the tension spring 133 is arranged in the blind hole 113 , and one end of the tension spring 133 is fixedly connected to the bottom of the blind hole 113 .

[0081] A tension spring 133 is cleverly arranged in the blind hole 113. Due to its elastic characteristics, one end of the tension spring 133 is firmly fixed to the bottom of the blind hole 113 to ensure that it will not fall off or shift easily, thereby ensuring that the tension spring 133 can continuously and stably exert its effectiveness, providing a lasting elastic tension for the horizontal plate 110, and being used to pull the vertical plate 130 to reset.

[0082] As a preferred embodiment of the above technical solution, a limiting block 135 is fixed at the end of the sliding rod 131 , and the limiting block 135 is slidably engaged in the limiting hole 111 ; and a reinforcing rib 115 is fixed on the upper surface of the transverse plate 110 .

[0083] A stopper 135 is fixed at the end of the slide bar 131, and the stopper 135 can slide along the stopper hole 111, thereby realizing the stopper function of the slide bar 131, preventing the slide bar 131 from being separated from the stopper hole 111, and effectively preventing the slide bar 131 from being offset or falling off during use, thereby ensuring safe use. A reinforcing rib 115 is also fixed on the upper surface of the horizontal plate 110 to improve the structural strength of the entire device.

[0084] As a preferred embodiment of the above technical solution, the elastic member 300 includes a compression spring 350 and a pressure plate 370 . The compression spring 350 is provided in plurality, and an array of the plurality of compression springs 350 is fixed on the upper surface of the pressure plate 370 . The upper end of the compression spring 350 is fixed to the horizontal plate 110 .

[0085] refer to Figure 8-Figure 9 The elastic member 300 includes a compression spring 350 and a pressure plate 370, wherein a plurality of compression springs 350 are provided, and these compression springs 350 are firmly fixed on the upper surface of the pressure plate 370 in the form of an array. The upper ends of these compression springs 350 are fixed to the cross plate 110, and together form a stable elastic component for pressing the upper end surface of the battery shell cover 510. The compression spring 350 has good elasticity and durability, and maintains the compactness and durability of the structure.

[0086] As a preferred embodiment of the above technical solution, a guide sleeve 371 is fixed on the surface of the pressure plate 370, the lower end of the compression spring 350 is fixed in the guide sleeve 371, the guide sleeve 371 is arranged in a one-to-one correspondence with the compression spring 350, and a guide hole 117 is opened on the lower surface of the cross plate 110 and is arranged in a one-to-one correspondence with the guide sleeve 371, and the upper end of the guide sleeve 371 is slidably inserted in the guide hole 117;

[0087] refer to Fig. 9 A guide sleeve 371 is fixed on the surface of the pressure plate 370, and a guide hole 117 matching the guide sleeve 371 is provided on the lower surface of the cross plate 110. The upper end of the guide sleeve 371 can be slidably inserted into the guide hole 117, and the compression spring 350 is arranged in the guide sleeve 371, which not only protects the compression spring 350, but also ensures the stability and accuracy of the pressure plate 370 during the movement.

[0088] As a preferred embodiment of the above technical solution, the pressing plate 370 is arranged parallel to the transverse plate 110 , and a rubber gasket is arranged on the lower surface of the pressing plate 370 .

[0089] The pressing plate 370 is arranged parallel to the transverse plate 110, and the two constitute a stable elastic support structure. The rubber gasket arranged on the lower surface of the pressing plate 370 not only ensures good contact with the working surface of the battery shell cover 510, but also greatly enhances the overall stability and durability.

[0090] Working principle: When installing, the buckle structure 100 is pressed from top to bottom onto the surface of the battery shell cover 510, so that the horizontal plate 110 and the elastic member 300 cooperate to press the upper end surface, and the undercut protrusion 150 at the lower end of the vertical plate 130 is directly stuck in the undercut groove 530 between the battery and the shell cover. When disassembling, the buckle structure 100 slides laterally to separate from the battery shell cover 510 and slides out from the side along the undercut groove 530. This buckle structure 100 is convenient for installation and disassembly, and fundamentally solves the problem of cumbersome installation and disassembly.

[0091] The upper end surface is compressed by cooperating with the cross plate 110 and the elastic member 300, which not only solves the problem that the rubber band is easy to break or stretches and loses tension during the charging process of the lead-acid battery 500, and fails to play a tightening role; the buckle structure 100 replaces the rubber band, and the function remains unchanged, and the operation is more convenient. The use of the buckle structure 100 fundamentally solves the problem that the rubber band is difficult to operate and easy to become weak, thereby reducing the troubles caused by this process to production.

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A lead-acid battery pre-charging fastening device, characterized in that: include: A snap-fit ​​structure (100), the snap-fit ​​structure (100) comprising a transverse plate (110) and a vertical plate (130), two vertical plates (130) being provided, the two vertical plates (130) being symmetrically arranged at the two ends of the transverse plate (110), an undercut protrusion (150) being fixed at the lower end of the vertical plate (130); an elastic member (300) being arranged between the two vertical plates (130), the elastic member (300) being arranged below the transverse plate (110).

2. A lead-acid battery pre-charging fastening device according to claim 1, characterized in that: Also included is a lead-acid battery (500), wherein a battery shell cover (510) is fixed to the upper end of the lead-acid battery (500), an undercut groove (530) is reserved between the lower end of the battery shell cover (510) and the lead-acid battery (500), and the undercut protrusion (150) is engaged with the undercut groove (530).

3. A lead-acid battery pre-charging fastening device according to claim 2, characterized in that: The undercut grooves (530) are arranged on both sides of the battery shell cover (510), and the undercut grooves (530) are extended along the length direction of the battery shell cover (510). The lower end of the undercut protrusion (150) is provided with a wedge inclined surface, and the undercut protrusion (150) protrudes into the vertical plate (130). The two undercut protrusions (150) are arranged opposite to each other.

4. A lead-acid battery pre-charging fastening device according to claim 1, characterized in that: The upper end of the vertical plate (130) is slidably connected to the horizontal plate (110) along the length direction, and a tension spring (133) is connected between the vertical plate (130) and the horizontal plate (110).

5. A lead-acid battery pre-charging fastening device according to claim 4, characterized in that: A sliding rod (131) is fixed to the upper end of the vertical plate (130), and a limiting hole (111) for the sliding rod (131) to be slidably inserted is opened on the end surface of the horizontal plate (110), and two sliding rods (131) are arranged in parallel.

6. A lead-acid battery pre-charging fastening device according to claim 4, characterized in that: A blind hole (113) is provided at the end of the transverse plate (110), the tension spring (133) is arranged in the blind hole (113), and one end of the tension spring (133) is fixedly connected to the bottom of the blind hole (113).

7. A lead-acid battery pre-charging fastening device according to claim 5, characterized in that: A limiting block (135) is fixed at the end of the sliding rod (131), and the limiting block (135) is slidably engaged in the limiting hole (111); and a reinforcing rib (115) is fixed on the upper surface of the transverse plate (110).

8. A lead-acid battery pre-charging fastening device according to claim 4, characterized in that: The elastic member (300) comprises a rubber band body (310) and a clamping plate (330); a receiving groove (137) is provided on the inner wall of the vertical plate (130); the clamping plate (330) embedded in the inner wall surface of the vertical plate (130) presses the end of the rubber band body (310) into the receiving groove (137).

9. A lead-acid battery pre-charging fastening device according to claim 8, characterized in that: The clamping plate (330) is arranged in the accommodating groove (137), one end of the clamping plate (330) is hinged to the vertical plate (130), and a clamping block (331) is fixed to the other end of the clamping plate (330). The surface of the vertical plate (130) is provided with a clamping groove (139) that cooperates with the clamping block (331), and the inner wall of the clamping plate (330) is provided with an anti-slip protrusion that fits the surface of the rubber band body (310).

10. A lead-acid battery pre-charging fastening device according to claim 4, characterized in that: The elastic member (300) comprises a compression spring (350) and a pressure plate (370), wherein a plurality of the compression springs (350) are provided, and an array of the plurality of compression springs (350) is fixed on the upper surface of the pressure plate (370), and the upper end of the compression spring (350) is fixed to the transverse plate (110).

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