A lead-acid battery for plate traction with a protective structure

Abstract

The present invention discloses a lead-acid battery for plate traction with a protection structure, which relates to the technical field of batteries. In the present invention, cavities are arranged in the inner and outer end walls around the battery body, and a first communication box communicated with the cavities is arranged on the top of the battery cover. When the gas in the battery body expands and presses the inner end wall, the liquid in the cavities can be squeezed into the first communication box to exert a push on the push block. With the meshing of the rack rod and the toothed ring, the disc is driven to rotate, aligning the groove and the through hole opened on the disc for exhaust operation. By arranging the second spring in the first communication box to reset the push block elastically, after the exhaust is completed, the groove and the through hole on the disc are reset and closed, which is beneficial to avoiding foreign impurities from entering the battery body and polluting the electrolyte, and effectively avoiding the leakage of the electrolyte due to tipping or pouring, and improving the operation stability of the battery to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a plate-type traction lead-acid battery with a protection structure. Background Art

[0002] A plate-type traction lead-acid battery is a power supply component used on vehicles or other power machinery as a traction power supply. It mainly consists of plates, separators, and terminal posts inside, and has a wide range of applications in the prior art.

[0003] When a lead-acid battery is actually in use, due to its working principle, a large amount of gas will be generated inside the battery. The generation of these gases will not only affect the performance of the battery, but also cause an increase in the internal pressure of the battery. In severe cases, it will even cause the battery to bulge. To avoid the above situation, an exhaust hole is usually opened at the top of the lead-acid battery. Although the existence of the exhaust hole allows the gas inside the battery to be discharged out in time, it also affects the overall sealing performance inside the lead-acid battery. Impurities in the external environment are likely to enter the battery through the exhaust hole, polluting the electrolyte inside the battery, which is not conducive to the stable use of the traction lead-acid battery in a harsh environment. Moreover, when the battery is tilted, the electrolyte inside the battery is also likely to leak out through the exhaust hole, polluting the surrounding environment and posing a certain degree of safety hazard.

[0004] Therefore, a plate-type traction lead-acid battery with a protection structure is proposed to solve some problems existing in the above prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages in the prior art that the exhaust hole of the plate-type traction lead-acid battery is directly connected to the inside of the battery, resulting in the electrolyte inside the battery being easily polluted and easily leaking, and to propose a plate-type traction lead-acid battery with a protection structure.

[0006] To solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A lead-acid battery for plate traction with a protective structure, comprising a battery body, the top of the battery body is fixedly covered with a battery cover, and two terminal posts are fixedly embedded in the top of the battery cover. A first filling port communicating with the inside of the battery body is fixedly installed on the top of the battery cover, and a first cap is screwed into the first filling port. The end walls around the battery body are of a double-layer structure, a cavity is formed inside the double-layer end walls around the battery body, and a liquid is filled in the cavity. A first communication box communicating with the cavity is fixedly installed on the top of the battery cover, and a downwardly concave groove is provided at the middle position of the top of the first communication box. A toothed ring arranged inside the first communication box is rotatably sleeved outside the groove. A disk fixedly connected to the toothed ring is rotatably embedded on the bottom end wall of the first communication box. Through holes symmetrically arranged are opened on both the bottom end wall of the groove and the disk. A push block is slidably installed inside the first communication box, a second spring for elastically supporting the push block is fixedly installed inside the first communication box, and a rack bar meshing with the toothed ring is fixedly installed on the push block.

[0008] Preferably, a one-way valve member is arranged above the groove, and the one-way valve member includes a valve cover screwed above the groove. A valve block is slidably installed inside the valve cover, a first spring elastically supporting above the valve block is installed inside the valve cover. A plurality of air holes are circumferentially opened on the end wall of the valve cover, and the holes communicating with the inner end wall of the valve cover are arranged below the top of the valve block.

[0009] Preferably, the lengths of the left and right side end walls of the battery body are set to be 3 times the lengths of the front and rear side end walls. Reinforcing ribs are fixedly connected in the cavities formed inside the double-layer end walls on the front and rear sides of the battery body, and the reinforcing ribs are of a grid-shaped structure. The bottoms of the cavities formed inside the double-layer end walls on the left and right sides of the battery body are communicated with each other.

[0010] Preferably, the liquid filled in the cavity is insulating heat-conducting oil, and a striking colorant is added to the insulating heat-conducting oil. The striking colorant is set to be yellow. A second communication box communicating with the cavity is fixedly installed on the top of the battery cover, and a second filling port communicating with the inside thereof is fixedly installed at the middle position of the top of the second communication box. A second cap is screwed into the second filling port.

[0011] Preferably, a guiding plate corresponding to the second filling port is fixedly installed inside the second communication box. A micro motor is fixedly installed on the top of the second cap, and a pump impeller arranged below the second cap is fixedly installed on the driving shaft of the micro motor. The outer dimension of the pump impeller is adapted to the dimension of the guiding plate.

[0012] Preferably, an outer frame is sleeved outside the battery body, and a U-shaped frame wrapped around the front, rear, and bottom end walls of the battery body is arranged inside the outer frame. Horizontal bars extending outward are fixedly installed at the tops of the front and rear ends of the U-shaped frame. First crossbeams are horizontally fixed on the front and rear sides of the top of the outer frame and are arranged outside the corresponding horizontal bars. A plurality of cams are rotatably installed on the tops of the first crossbeams, and the ends of the cams support on the bottoms of the corresponding horizontal bars. A worm gear coaxially arranged with the cam is rotatably installed inside the first crossbeam. A horizontally arranged worm is meshed and connected to the outside of the plurality of worm gears on the same side. A longitudinally arranged transmission rod is rotatably installed inside the outer frame. Bevel gears that mesh with each other are fixedly installed at the ends of the worm and the transmission rod. A servo motor is fixedly installed on the battery body, and the drive shaft of the servo motor is in transmission connection with the worm. Second crossbeams are horizontally fixed on the front and rear sides of the bottom of the outer frame and are arranged directly below the corresponding horizontal bars.

[0013] Preferably, pressing plates are fixedly installed on the front and rear sides of the top of the battery body and press above the cams.

[0014] Preferably, a plurality of uniformly distributed third springs are fixedly installed on the tops of the front and rear second crossbeams.

[0015] Preferably, a limiting plate covering above the battery cover is rotatably installed at the rear of the top of the battery body, and a first torsion spring is installed at the rotational connection of the limiting plate and the battery body. Sleeves corresponding to the two terminal posts are fixedly installed on the limiting plate, and clamping clips adapted to the terminal posts are fixedly installed inside the sleeves. The clamping clips are arranged in a Ω-shaped structure, and wires electrically connected to the clamping clips are fixedly installed on the outside of the sleeves.

[0016] Preferably, vertically arranged side plates are rotatably installed on the left and right sides of the outer frame, and a second torsion spring is installed at the rotational connection of the side plates and the outer frame. A baffle for supporting the side plates is fixedly installed on the U-shaped frame. The bottom of the U-shaped frame and the side plates are both made of flame-retardant materials.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the present invention, by setting the end walls around the battery body as a double-layer structure, the protective effect of the end walls on the inner plates and electrolyte in the battery body is improved. By arranging cavities in the inner and outer end walls around the battery body and providing a first communication box communicating with the cavities at the top of the battery cover, when the gas in the battery body expands and presses against the inner end wall, the liquid in the cavities can be squeezed into the first communication box to exert a push on the push block. With the meshing of the rack bar and the gear ring, the disc is driven to rotate, aligning the groove and the through hole opened on the disc for exhaust operation. By setting the second spring in the first communication box to reset the push block elastically, after the exhaust is completed, the groove and the through hole on the disc are reset and closed, which is beneficial to preventing external impurities from entering the battery body and contaminating the electrolyte, and effectively avoiding the leakage of the electrolyte due to tipping or pouring, and improving the operation stability of the battery to a certain extent;

[0019] 2. In the present invention, by adding insulating heat-conducting oil into the cavities, it is beneficial to ensure the heat-conducting performance of the double-layer end walls around the battery body, ensure the timely stability of the internal heat dissipation of the lead-acid battery when it is enabled at high power. At the same time, by adding a yellow eye-catching colorant into the insulating heat-conducting oil, the insulating heat-conducting oil presents an eye-catching yellow color. When the outer end wall of the battery body is ruptured, the leakage of the yellow insulating heat-conducting oil is eye-catching, which can timely remind relevant staff to carry out maintenance;

[0020] 3. In the present invention, through the connection of the second communication box and the second filling port, the staff can add insulating heat-conducting oil into the cavities through the second filling port, and the operation is convenient. At the same time, by installing a guiding plate corresponding to the second filling port in the second communication box and fixing a pump impeller adapted to the guiding plate on the driving shaft of the micro motor, the micro motor can drive the pump impeller to rotate at high speed between the guiding plates after being powered on, disturbing the insulating heat-conducting oil to circulate in the cavities. By actively driving the insulating heat-conducting oil to circulate, the uniformity of the heat dissipation of the heat in the battery body through the insulating heat-conducting oil is improved, which is beneficial to improving the heat dissipation and protection effect of the lead-acid battery;

[0021] 4. In the present invention, by arranging an outer frame on the outside of the battery body, not only can the battery body be protected in a frame manner, but also sufficient heat dissipation space can be provided when multiple lead-acid batteries are used side by side. At the same time, by setting the end of the cam below the cross bar to lift it, and arranging the second cross beam fixed at the bottom of the outer frame directly below the cross bar, in case of danger, the cam can be controlled to rotate to release the lift of the end of the cam on the cross bar, so that the U-shaped frame carries the battery body and sinks below the outer frame, cooperating with the side plates that flip and cover the top of the battery cover on both sides, can comprehensively sink and isolate the lead-acid battery in danger, and reduce the spread speed of the harm to both sides to a certain extent, facilitating providing sufficient time for the treatment of the staff;

[0022] 5. In the present invention, by arranging a pressing plate to press on the top of the cam, the upper part of the cam is restricted, so that the front and rear forces on the cam end are balanced when lifting the cross bar, which is beneficial to ensuring the stability of the battery body installed in the outer frame under normal circumstances. At the same time, by evenly dispersing and installing the third springs on the tops of the front and rear second cross beams, with the elastic buffering of the third springs, the direct collision between the cross bar and the second cross beam can be avoided during the sinking process of the battery body, which is beneficial to improving the stability when the battery body sinks and is isolated;

[0023] 6. In the present invention, by sleeving the sleeve on the outside of the terminal post, under normal circumstances, the terminal post can be protected, and the probability of damage to the terminal post from a top view can be reduced. By tightly inserting the terminal post into the bottom of the clip, when the battery body sinks due to a dangerous situation, the terminal post and the clip can be quickly and smoothly separated, automatically interrupting the power supply to the lead-acid battery in danger, which is beneficial to improving the safety during the actual use of the lead-acid battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is a perspective view of the present invention;

[0026] Figure 2 is a perspective view of the reinforcing rib split from the cavity of the present invention;

[0027] Figure 3 is a perspective view of the structures on the battery cover of the present invention after being split;

[0028] Figure 4 is a perspective view of the structures on the outer frame of the present invention;

[0029] Figure 5 is a perspective view of the cam, worm gear and worm of the present invention;

[0030] Figure 6 is a perspective view of the clip split from the sleeve of the present invention;

[0031] Figure 7 is the present invention Figure 1 top view of the structure in;

[0032] Figure 8 is the present invention Figure 7 sectional view taken along line A-A in;

[0033] Figure 9 is the present invention Figure 7Cross-sectional view at B-B in the [device];

[0034] Figure 10 For the present invention Figure 7 Cross-sectional view at C-C in the [device];

[0035] Figure 11 For the present invention Figure 7 Cross-sectional view at D-D in the [device];

[0036] Figure 12 For the present invention Figure 7 Cross-sectional view at E-E in the [device];

[0037] Figure 13 For the present invention Figure 1 Top cross-sectional view of the structure in the [device];

[0038] Figure 14 Stereogram of the present invention when multiple batteries are used in parallel groups;

[0039] Figure 15 For the present invention Figure 14 Stereogram of a single battery when it sinks and is isolated.

[0040] Numbers in the figure:

[0041] 1. Battery main body; 101. Battery cover; 102. Terminal; 103. First filling port; 104. First cap;

[0042] 2. Cavity; 201. First connection box; 202. Groove; 203. Valve cover; 204. Valve block; 205. First spring; 206. Air hole; 207. Tooth ring; 208. Disc; 209. Pusher; 210. Second spring; 211. Rack bar; 212. Reinforcing rib;

[0043] 3. Second connection box; 301. Second filling port; 302. Second cap; 303. Guide plate; 304. Micro motor; 305. Pump impeller;

[0044] 4. Outer frame; 401. U-shaped frame; 402. Cross bar; 403. First cross beam; 404. Cam; 405. Worm gear; 406. Worm; 407. Transmission rod; 408. Bevel gear; 409. Servo motor; 410. Pressing plate; 411. Second cross beam; 412. Third spring;

[0045] 5. Restricting plate; 501. First torsion spring; 502. Sleeve; 503. Clamp; 504. Wire;

[0046] 6. Side plate; 601. Second torsion spring; 602. Baffle. Detailed implementation method

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0048] Embodiment: This embodiment provides a lead-acid battery for plate traction with a protection structure. Refer to Figure 1 - Figure 15 , specifically, it includes a battery body 1. The top of the battery body 1 is fixedly covered with a battery cover 101, and two terminal posts 102 are fixedly inlaid on the top of the battery cover 101. A first filling port 103 communicating with the inside of the battery body 1 is fixedly installed on the top of the battery cover 101, and a first cap 104 is screwed into the first filling port 103. The end walls around the battery body 1 are arranged in a double-layer structure. A cavity 2 is formed inside the double-layer end walls around the battery body 1, and the cavity 2 is filled with liquid. A first communication box 201 communicating with the cavity 2 is fixedly installed on the top of the battery cover 101. A downwardly concave groove 202 is provided at the middle position of the top of the first communication box 201. A toothed ring 207 arranged inside the first communication box 201 is rotatably sleeved outside the groove 202. A disc 208 fixedly connected to the toothed ring 207 is rotatably embedded on the bottom end wall of the first communication box 201. Symmetrically arranged through holes are opened on the bottom end wall of the groove 202 and the disc 208. A push block 209 is slidably installed inside the first communication box 201. A second spring 210 for elastically supporting the push block 209 is fixedly installed inside the first communication box 201. A rack bar 211 meshing with the toothed ring 207 is fixedly installed on the push block 209.

[0049] When the lead-acid battery is actually used, the staff installs it on a traction vehicle as an energy supply unit. By arranging the end walls around the battery body 1 in a double-layer structure, the protection effect of the end walls on the inner plates and electrolyte in the battery body 1 is improved. When the outside of the battery body 1 is collided, the double-layer structure of the end walls of the battery body 1 makes it not easily pierced completely. Even if the outer layer of the end wall is damaged, the inner end wall can still limit the leakage of the electrolyte, which is beneficial to improving the safety of the lead-acid battery during actual use. During daily use, the first cap 104 can be rotated and unscrewed, and the electrolyte can be replenished into the battery body 1 through the first filling port 103.

[0050] Under normal circumstances, during the use of the lead-acid battery, the through holes formed in the disc 208 are in communication with the inside of the battery body 1, and the through holes formed in the bottom end wall of the groove 202 are in a misaligned state with the through holes formed in the disc 208. This makes the fitting position between the bottom end wall of the groove 202 and the disc 208 not form a communication structure. When excessive gas is generated inside the battery body 1 due to the operation of the lead-acid battery, under the support of gas expansion, the inner end wall of the double-layer end wall of the battery body 1 will be extruded outward. With the outer end wall remaining unchanged, the space inside the cavity 2 is reduced, causing the liquid filled in the cavity 2 to be extruded and enter the first connection box 201. Along with the extrusion of the liquid, the push block 209 is driven to move against the elastic support of the second spring 210. During the movement of the push block 209, the rack bar 211 is driven to move synchronously. By means of the engagement between the rack bar 211 and the gear ring 207, the gear ring 207 is driven to drive the disc 208 to rotate. During the rotation of the disc 208, the through holes formed therein are rotated, gradually aligning with the through holes formed in the bottom end wall of the groove 202, forming an upper and lower communication structure here. At this time, the excessive gas inside the battery body 1 can be discharged outward through the overlapping and communicating through holes in the bottom end wall of the groove 202 and the disc 208, preventing the battery body 1 from being damaged due to the inability to discharge the gas expansion in time.

[0051] After the excessive gas is discharged, the inner end wall of the double-layer end wall of the battery body 1 returns to its initial state because it is no longer subjected to extrusion. The liquid in the cavity 2 no longer exerts extrusion and pushing force on the push block 209. At this time, with the elastic reset of the second spring 210, the push block 209 is driven to reset and move, driving the rack bar 211 to move in the reverse direction, driving the gear ring 207 to drive the disc 208 to return to its initial state. The through holes formed in the disc 208 are no longer in communication with the through holes formed in the bottom end wall of the groove 202, and this place returns to a closed state. In this case, even if the lead-acid battery is inverted by flipping, the electrolyte in the battery body 1 will not leak. This enables the traction vehicle equipped with this lead-acid battery not to cause electrolyte leakage even in the event of a rollover, which is beneficial to improving the safety and stability during the actual use of the lead-acid battery.

[0052] In the specific implementation process, such as Figure 3 and Figure 9As shown, a one-way valve member is provided above the groove 202. The one-way valve member includes a valve cover 203 threadedly connected above the groove 202. A valve block 204 is slidably installed in the valve cover 203. A first spring 205 elastically supporting above the valve block 204 is installed in the valve cover 203. A plurality of air holes 206 are circumferentially formed on the end wall of the valve cover 203, and the holes communicating with the inner end wall of the valve cover 203 are arranged below the top of the valve block 204. When the lead-acid battery is actually used, the sizes of the through holes formed on the bottom end wall of the groove 202 and the disc 208 are relatively large. To prevent external impurities from entering the battery body 1 through the aligned through holes when the through holes are opened, the one-way valve member is installed on the groove 202. Under normal circumstances, with the elastic pressing of the first spring 205 on the valve block 204, the valve block 204 keeps the air holes 206 blocked. In this state, external impurities cannot enter and accumulate in the through holes formed on the bottom end wall of the groove 202. When the through holes formed on the disc 208 and the bottom end wall of the groove 202 are aligned for exhaust, under the impact of high-pressure air flow, the valve block 204 is pushed upward against the elastic support of the first spring 205, and the valve block 204 no longer blocks the air holes 206. The gas ejected from the battery body 1 is discharged outward through the air holes 206. At this time, due to the air flow impact formed by the outward jet of the air flow, external impurities also cannot enter through the air holes 206, which is beneficial to ensuring the stability inside the battery body 1 of the lead-acid battery in a high-dust working environment. The valve cover 203 is installed in the groove 202 by threaded connection, and the staff can flexibly disassemble and assemble the valve cover 203 according to the actual usage requirements.

[0053] In the specific implementation process, as Figure 2 shown, the lengths of the left and right side end walls of the battery body 1 are set to be 3 times the lengths of its front and rear side end walls. A reinforcing rib 212 is fixedly connected in the cavity 2 formed by the double-layer end walls on the front and rear sides of the battery body 1, and the reinforcing rib 212 is arranged in a grid-like structure. The bottoms of the cavities 2 formed by the double-layer end walls on the left and right sides of the battery body 1 communicate with each other. When the lead-acid battery is actually used, by fixedly installing the reinforcing rib 212 in the cavity 2 formed by the double-layer end walls on the front and rear sides of the battery body 1, the structural firmness of the double-layer end walls on the front and rear sides of the battery body 1 can be strengthened. It can not only effectively improve the structural firmness of the battery body 1, but also concentrate the deformation of the inner end wall due to gas expansion in the longer left and right sides in the double-layer end wall structure of the battery body 1. The lengths of the inner end walls on the left and right sides of the battery body 1 are long, and the adaptation range for deformation due to gas expansion is large, which is convenient for the device to be cyclically triggered for use. If the shorter front and rear end walls are used as the trigger surfaces, when the gas expands excessively, the shorter front and rear inner end walls are prone to rupture and damage due to the small deformable range.

[0054] In the specific implementation process, as Figure 1 and Figure 3As shown, the liquid filled in the cavity 2 is insulating heat-conducting oil, and a conspicuous colorant is added to the insulating heat-conducting oil. The conspicuous colorant is set to yellow. A second connection box 3 communicating with the cavity 2 is fixedly installed at the top of the battery cover 101, and a second filling port 301 communicating with its interior is fixedly installed at the middle position of the top of the second connection box 3. A second cap 302 is screwed into the second filling port 301 by internal threads. When the lead-acid battery is actually used, since the liquid filled in the cavity 2 is insulating heat-conducting oil, it is beneficial to ensure the heat-conducting performance of the double-layer end walls around the battery body 1, and ensure the timely stability of the internal heat of the lead-acid battery discharged outward when it is enabled at high power. By adding the yellow conspicuous colorant to the insulating heat-conducting oil, the insulating heat-conducting oil presents a conspicuous yellow color. When the outer end wall of the battery body 1 is broken, the leakage of the yellow insulating heat-conducting oil is conspicuous, which can timely remind relevant staff for maintenance. During daily maintenance, the staff can rotate and unscrew the second cap 302, and through the communication between the second filling port 301 and the second connection box 3, add the insulating heat-conducting oil to the cavity 2.

[0055] In the specific implementation process, as Figure 3 and Figure 13 shown, a guiding plate 303 corresponding to the second filling port 301 is fixedly installed in the second connection box 3. A micro motor 304 is fixedly installed at the top of the second cap 302, and a pump impeller 305 arranged below the second cap 302 is fixedly installed on the driving shaft of the micro motor 304. The outer dimension of the pump impeller 305 is adapted to the dimension of the guiding plate 303. During the actual use process of the lead-acid battery, when the staff adds the insulating heat-conducting oil, the insulating heat-conducting oil can be added to the second filling port 301. The outer dimension of the pump impeller 305 is adapted to the internal dimension of the second filling port 301, which enables the second cap 302 with the pump impeller 305 installed below to be smoothly separated from the second filling port 301. When the second cap 302 is screwed into the second filling port 301, the pump impeller 305 fixed on the driving shaft of the micro motor 304 is located between the guiding plates 303 arranged in the second connection box 3 and is immersed in the insulating heat-conducting oil. When the lead-acid battery is enabled, the micro motor 304 can be powered by an external power cord, so that the micro motor 304 drives the pump impeller 305 to rotate at a high speed, disturbing the insulating heat-conducting oil to circulate in the cavity 2. By actively driving the insulating heat-conducting oil to circulate, the uniformity of the heat dissipation of the battery body 1 through the insulating heat-conducting oil is improved, which is beneficial to improving the heat dissipation protection effect of the lead-acid battery.

[0056] In the specific implementation process, as Figure 1 、 Figure 4 、 Figure 5 and Figure 8As shown, an outer frame 4 is sleeved outside the battery body 1, and a U-shaped frame 401 is arranged inside the outer frame 4 and wraps the front, rear and bottom end walls of the battery body 1. Horizontal bars 402 extending outward horizontally are fixedly installed at the tops of the front and rear ends of the U-shaped frame 401. First cross beams 403 are horizontally fixed on the front and rear sides of the top of the outer frame 4 and are arranged outside the corresponding horizontal bars 402. A plurality of cams 404 are rotatably installed at the top of the first cross beam 403. The ends of the cams 404 support on the bottoms of the corresponding horizontal bars 402. A worm gear 405 coaxially arranged with the cam 404 is rotatably installed inside the first cross beam 403. A horizontally arranged worm 406 is meshed and connected to the outside of a plurality of worm gears 405 on the same side. A longitudinally arranged transmission rod 407 is rotatably installed inside the outer frame 4. Bevel gears 408 meshing with each other are fixedly installed at the ends of the worm 406 and the transmission rod 407. A servo motor 409 is fixedly installed on the battery body 1, and the drive shaft of the servo motor 409 is in transmission connection with the worm 406. Second cross beams 411 are horizontally fixed on the front and rear sides of the bottom of the outer frame 4 and are arranged directly below the corresponding horizontal bars 402.

[0057] When the lead-acid battery is actually in use, multiple lead-acid batteries are usually used together. Workers install multiple lead-acid batteries side by side on a towing vehicle. When a dangerous situation occurs to one of the lead-acid batteries and needs to be isolated, the servo motor 409 installed on the outer frame 4 is powered on and started, driving the worm 406 to rotate. With the meshing of the bevel gears 408 and the transmission connection of the transmission rod 407, the front and rear two worms 406 rotate synchronously. Subsequently, with the meshing of the worm 406 and the worm gear 405, the cam 404 is driven to rotate 90°. At this time, the cam 404 is converted from a longitudinal state to a horizontal state. After rotating 90°, the end of the cam 404 is no longer at the bottom of the horizontal bar 402, and the end of the cam 404 no longer supports the horizontal bar 402. Under the action of gravity, the U-shaped frame 401, the horizontal bar 402 and the battery body 1 installed inside the U-shaped frame 4 fall downward. Since the second cross beam 411 is arranged directly below the horizontal bar 402, when the battery body 1 falls below the outer frame 4, the second cross beam 411 supports the horizontal bar 402, making the battery body 1 present a state of hanging below the outer frame 4 and being separated from the outer frames 4 of the surrounding lead-acid batteries in layers. The dangerous situation may be spontaneous combustion, abnormal expansion, etc. The determination of the dangerous situation of the lead-acid battery is carried out by corresponding sensors. For example, when a spontaneous combustion danger occurs, the spontaneously combusted battery body 1 sinks and is isolated, which can reduce the speed of the spread of the ignition point to the surrounding lead-acid batteries, and the spontaneously combusted battery body 1 sinks and protrudes, making the ignition point eye-catching and facilitating the staff to carry out danger handling such as fire extinguishing.

[0058] The presence of the outer frame 4 can prevent two adjacent battery bodies 1 from being closely attached to each other. It can not only provide sufficient heat dissipation space when the lead-acid battery is working, but also protect the battery body 1 in a frame mode through the outer frame 4, which is beneficial to further improving the safety protection performance of the lead-acid battery.

[0059] In the specific implementation process, such as Figure 4 and Figure 8 As shown, pressing plates 410 that press above the cams 404 are fixedly installed on the front and rear sides of the top of the battery body 1. When the lead-acid battery is actually used, by setting the pressing plates 410 to press on the tops of the cams 404 and restricting above the cams 404, the front and rear forces on the end of the cam 404 when lifting the cross bar 402 are balanced, which is beneficial to ensuring the stability of the battery body 1 installed in the outer frame 4 under normal circumstances.

[0060] In the specific implementation process, such as Figure 8 and Figure 9 As shown, a plurality of uniformly distributed third springs 412 are fixedly installed on the tops of the front and rear second cross bars 411. When the lead-acid battery is actually used, by evenly dispersing and installing the third springs 412 on the tops of the front and rear second cross bars 411, during the process of the battery body 1 sinking, the cross bar 402 will fall onto the third springs 412. With the elastic buffer of the third springs 412, direct collision between the cross bar 402 and the second cross bar 411 is avoided, which is beneficial to improving the stability of the battery body 1 during sinking isolation.

[0061] In the specific implementation process, such as Figure 6 and Figure 12 As shown, a limiting plate 5 covering above the battery cover 101 is rotatably installed at the rear of the top of the battery body 1, and a first torsion spring 501 is installed at the rotational connection between the limiting plate 5 and the battery body 1. A sleeve 502 corresponding to the two terminal posts 102 is fixedly installed on the limiting plate 5, and a clip 503 adapted to the terminal post 102 is fixedly installed inside the sleeve 502. The clip 503 is set in an Ω-shaped structure, and a wire 504 electrically connected to the clip 503 is fixedly installed on the outside of the sleeve 502. When the lead-acid battery is actually used, with the elastic support of the first torsion spring 501, the limiting plate 5 remains in a state of closely fitting on the top of the battery cover 101. The sleeve 502 is sleeved outside the terminal post 102. Under normal circumstances, the terminal post 102 can be protected. The top end of the terminal post 102 is set in a flat structure and can be closely and smoothly inserted into the clip 503. When the battery body 1 sinks due to a dangerous situation, the terminal post 102 and the clip 503 can be quickly and smoothly separated, automatically interrupting the power supply to the lead-acid battery in danger, which is beneficial to improving the safety of the lead-acid battery during actual use.

[0062] In the specific implementation process, such asFigure 12 and Figure 14 As shown in Figure 14 , vertical side plates 6 are rotatably installed on the left and right sides of the outer frame 4, and a second torsion spring 601 is installed at the rotational connection between the side plate 6 and the outer frame 4. A baffle 602 for supporting the side plate 6 is fixedly installed on the U-shaped frame 401. The bottom of the U-shaped frame 401 and the side plate 6 are both made of flame-retardant materials. During actual use of the lead-acid battery, with the elastic support of the second torsion spring 601, the side plate 6 maintains a state of deflecting towards the battery body 1. When the battery body 1 sinks and is isolated due to a dangerous situation, the baffle 602 loses its support for the side plate 6, causing the left and right side plates 6 to flip and close on the top of the battery cover 101. Together with the bottom of the U-shaped frame 401, a more rigorous protective isolation can be formed.

[0063] Specifically, the working principle and operation method of the present invention are as follows:

[0064] By setting the end walls around the battery body 1 of the lead-acid battery to a double-layer structure, its safety protection performance can be effectively improved, and the situation of electrolyte leakage caused by the rupture of the end wall can be greatly reduced. By filling the cavity 2 formed within the end wall of the battery body 1 with brightly colored insulating heat-conducting oil, and cooperating with the micro-motor 304 to drive the pump impeller 305 to rotate, driving the insulating heat-conducting oil to circulate, it is beneficial to improve the effect of dissipating the heat inside the battery body 1 to the outside, and it is convenient to timely remind the staff to repair when the outer end wall is ruptured;

[0065] When a large amount of gas is generated inside the battery body 1 due to long-term use, the inner end wall of the battery body 1 is squeezed under the filling of the gas, compressing the space of the cavity 2, squeezing the heat-conducting oil filled in the cavity 2 into the first connection box 201, pushing the push block 209, driving the rack bar 211 to move. By means of the meshing of the rack bar 211 and the gear ring 207, the disk 208 is driven to rotate, so that the disk 208 is aligned with the through hole opened on the bottom end wall of the groove 202. The excessive gas in the battery body 1 flows downward through the aligned through holes, pushing the valve block 204 upward and discharging it through the air hole 206. After the excessive gas is discharged, the valve block 204 and the disk 208 reset and close again, so that under normal circumstances, even if the lead-acid battery is overturned, the electrolyte will not leak.

[0066] When it is necessary to sink and isolate the lead-acid battery in case of danger, the servo motor 409 is powered on and starts to drive the worm 406 to rotate. By means of the meshing of the worm 406 and the worm gear 405, the cam 404 is driven to rotate 90°. The cam 404 no longer supports the cross bar 402, so that the battery main body 1 installed in the U-shaped frame 401 drops downward. During the falling process, blocked by the second cross beam 411, the battery main body 1 stays below the outer frame 4. The cross bar 402 acts on the third spring 412, and the elastic deformation of the third spring 412 is used to buffer the falling impact. When the battery main body 1 sinks and is isolated, the terminal 102 is separated from the clip 503, automatically interrupting the power supply to the lead-acid battery. After the U-shaped frame 401 drives the battery main body 1 to sink, the baffle 602 loses the block on the side plate 6, and under the elastic support of the second torsion spring 601, the two side plates 6 flip and cover the top of the battery cover 101.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A plate-type lead-acid traction battery with a protective structure, comprising a battery body (1), the top of the battery body (1) being fixedly covered with a battery cover (101), and the top of the battery cover (101) being fixedly inlaid with two terminal posts (102), the top of the battery cover (101) being fixedly mounted with a first filling port (103) communicating with the interior of the battery body (1), and the first filling port (103) being internally threadedly screwed with a first cap (104), characterized in that: The end walls around the battery body (1) are arranged in a double-layer structure, a cavity (2) is formed in the double-layer end walls around the battery body (1), and the cavity (2) is filled with liquid, a first connecting box (201) connected to the cavity (2) is fixedly mounted on the top of the battery cover (101), and a groove (202) recessed downward is arranged in the middle of the top of the first connecting box (201), a toothed ring (207) arranged in the first connecting box (201) is rotatably sleeved on the outer side of the groove (202), and the first connecting box (201) is provided with a plurality of connecting holes (207) disposed in the first connecting box (201). A disc (208) fixedly connected to the toothed ring (207) is rotatably embedded on the bottom end wall of the through box (201); symmetrical through holes are provided on the bottom end wall of the groove (202) and the disc (208); a push block (209) is slidably mounted in the first connecting box (201); a second spring (210) for elastically supporting the push block (209) is fixedly mounted in the first connecting box (201); and a rack rod (211) meshing with the toothed ring (207) is fixedly mounted on the push block (209); A one-way valve component is arranged above the groove (202), and the one-way valve component comprises a valve cover (203) threadedly connected to the groove (202), a valve block (204) is slidably installed in the valve cover (203), a first spring (205) elastically supported above the valve block (204) is installed in the valve cover (203), a plurality of air holes (206) are arranged around the end wall of the valve cover (203), and the air holes (206) are connected to holes on the inner end wall of the valve cover (203) arranged below the top of the valve block (204).

2. A plate-type lead-acid traction battery with a protective structure according to claim 1, characterized in that: The length of the left and right end walls of the battery body (1) is set to be three times the length of the front and rear end walls thereof; a reinforcing rib (212) is fixedly connected to the cavity (2) formed in the front and rear double-layer end walls of the battery body (1); and the reinforcing rib (212) is set to be a grid-shaped structure; and the bottoms of the cavity (2) formed in the left and right double-layer end walls of the battery body (1) are connected to each other.

3. The plate-type lead-acid traction battery with a protective structure according to claim 1, characterized in that: The liquid filled in the cavity (2) is insulating heat-conducting oil, and a striking colorant is added to the insulating heat-conducting oil, and the striking colorant is set to yellow. A second connecting box (3) connected to the cavity (2) is fixedly installed on the top of the battery cover (101), and a second filling port (301) connected to the interior of the second connecting box (3) is fixedly installed in the middle position of the top of the second connecting box (3), and a second cover cap (302) is screwed on the internal thread of the second filling port (301).

4. A plate-type lead-acid traction battery with a protective structure according to claim 3, characterized in that: A guide plate (303) corresponding to the second filling port (301) is fixedly mounted in the second communication box (3), a micro motor (304) is fixedly mounted on the top of the second cover cap (302), and a pump blade (305) disposed below the second cover cap (302) is fixedly mounted on the drive shaft of the micro motor (304), and the outer dimensions of the pump blade (305) are adapted to the dimensions of the guide plate (303).

5. The plate-type lead-acid traction battery with a protective structure according to claim 1, characterized in that: The battery body (1) is sleeved with an outer frame (4), and a U-shaped frame (401) is arranged inside the outer frame (4) and wrapped around the front, rear and bottom end walls of the battery body (1); horizontal outward-facing cross bars (402) are fixedly installed on the tops of the front and rear ends of the U-shaped frame (401); first cross beams (403) arranged outside the cross bars (402) in corresponding directions are transversely fixed on the front and rear sides of the top of the outer frame (4); a plurality of cams (404) are rotatably installed on the top of the first cross beam (403); the ends of the cams (404) are supported on the bottoms of the cross bars (402) in corresponding directions; and a plurality of cams (404) are rotatably installed inside the first cross beam (403) and a plurality of cams (404) are rotatably installed on the top of the first cross beam (403). (404) a worm wheel (405) coaxially arranged, the outer sides of a plurality of the worm wheels (405) located on the same side are meshingly connected with a transversely arranged worm (406), a longitudinally arranged transmission rod (407) is rotatably installed in the outer frame (4), and mutually meshing bevel teeth (408) are fixedly installed at the ends of the worm (406) and the transmission rod (407), a servo motor (409) is fixedly installed on the battery body (1), and the drive shaft of the servo motor (409) is transmission-connected with the worm (406), and a second crossbeam (411) arranged directly below the corresponding direction cross bar (402) is transversely fixed on the front and rear sides of the bottom of the outer frame (4).

6. A plate-type lead-acid traction battery with a protective structure according to claim 5, characterized in that: A pressure plate (410) is fixedly mounted on the front and rear sides of the top of the battery body (1) and is pressed on the top of the cam (404).

7. A plate-type lead-acid traction battery with a protective structure according to claim 5, characterized in that: A plurality of evenly distributed third springs (412) are fixedly mounted on the tops of the two front and rear second cross beams (411).

8. The plate-type lead-acid traction battery with a protective structure according to claim 5, characterized in that: A limiting plate (5) covering the top of the battery cover (101) is rotatably mounted at the rear of the top of the battery body (1), and a first torsion spring (501) is mounted at the rotational connection between the limiting plate (5) and the battery body (1); a sleeve (502) corresponding to the two terminal posts (102) is fixedly mounted on the limiting plate (5), and a clamp (503) adapted to the terminal posts (102) is fixedly mounted inside the sleeve (502); the clamp (503) is configured as an Ω-shaped structure, and a wire (504) electrically connected to the clamp (503) is fixedly mounted on the outer side of the sleeve (502).

9. A plate-type lead-acid traction battery with a protective structure according to claim 8, characterized in that: Vertically arranged side panels (6) are rotatably mounted on the left and right sides of the outer frame (4), and a second torsion spring (601) is mounted at the rotational connection between the side panels (6) and the outer frame (4). A baffle (602) for supporting the side panels (6) is fixedly mounted on the U-shaped frame (401), and the bottom of the U-shaped frame (401) and the side panels (6) are both made of flame-retardant material.

Images