An explosion-proof nickel-hydrogen battery with overvoltage and overcurrent double protection circuit
By setting a protective mechanism at the bottom of the explosion-proof nickel-metal hydride battery, and using components such as a base plate, limiting parts, and telescopic damping rods, the problem of insufficient impact absorption by the rubber pad is solved, and the stability and sealing of the battery are achieved on bumpy roads, preventing leakage and hydrogen evolution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING SHUANGJING ELECTRICAL
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-21
AI Technical Summary
When existing explosion-proof nickel-metal hydride batteries are driven on bumpy roads, the rubber pads are not very effective at absorbing the impact, causing the battery to shake, which may damage the seal, leading to leakage or hydrogen release and damage.
A protective mechanism is installed at the bottom of the explosion-proof nickel-metal hydride battery, including components such as a base plate, limiting parts, moving parts, telescopic damping rods, and springs. Through the cooperation of these components, the amplitude of shaking is reduced and support is provided to ensure the stability of the battery.
It effectively reduces the shaking amplitude of explosion-proof nickel-metal hydride batteries on bumpy roads, prevents excessive battery tilting, ensures the reliability of electrical connections, avoids leakage and hydrogen evolution, and improves battery safety.
Smart Images
Figure CN224537187U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of nickel-metal hydride batteries, and more specifically, to an explosion-proof nickel-metal hydride battery equipped with a dual overvoltage and overcurrent protection circuit. Background Technology
[0002] Explosion-proof nickel-metal hydride batteries are special batteries designed for high-risk environments. Through structural reinforcement, material optimization, and multiple safety mechanisms, they ensure safety and stability in flammable and explosive scenarios. In mining backup power supplies, electric vehicles, and energy storage systems, these batteries have become one of the key technologies for ensuring safe operation.
[0003] In existing technologies, explosion-proof nickel-metal hydride batteries are equipped with an explosion-proof membrane and a pressure sensor. When the internal pressure of the battery increases due to overcharging or abnormal reactions, the explosion-proof membrane ruptures to release the pressure, and at the same time, the pressure sensor triggers the circuit to cut off, thus providing overvoltage protection for the nickel-metal hydride battery. By setting a PTC thermistor, when the current is too large, the PTC resistance increases sharply, limiting the current to prevent overheating, thus providing overcurrent protection for the nickel-metal hydride battery.
[0004] However, existing explosion-proof nickel-metal hydride batteries with dual overvoltage and overcurrent protection circuits still have the following shortcomings during use: Existing explosion-proof nickel-metal hydride batteries are widely installed inside electric vehicles to power them. When installed, these batteries usually have a rubber pad at the bottom, but the rubber pad's impact absorption effect is generally poor. When the car is driving on bumpy roads, the nickel-metal hydride battery is prone to shaking, which may damage the battery's seal, leading to leakage or hydrogen evolution, and ultimately damaging the nickel-metal hydride battery. Utility Model Content
[0005] To overcome the above shortcomings, this application provides an explosion-proof nickel-metal hydride battery with a dual overvoltage and overcurrent protection circuit. It aims to improve the effect of the rubber pad in absorbing impact force. When the car is driving on bumpy roads, the nickel-metal hydride battery is easily shaken, which may damage the battery's seal, leading to leakage or hydrogen evolution, and causing damage to the nickel-metal hydride battery.
[0006] This application provides an explosion-proof nickel-metal hydride battery with dual overvoltage and overcurrent protection circuits, including an explosion-proof nickel-metal hydride battery. The explosion-proof nickel-metal hydride battery internally houses an explosion-proof diaphragm and a pressure sensor for overvoltage protection, and an internal PTC thermistor for overcurrent protection. A mounting plate for mounting the explosion-proof nickel-metal hydride battery inside a vehicle is located below the battery. A protective mechanism to reduce battery sway is located at the bottom of the battery, and support mechanisms to prevent excessive tilting are located on both sides of the battery. The protective mechanism includes a base plate connected to the bottom of the explosion-proof nickel-metal hydride battery. Two sets of first rotating parts are rotatably connected to the bottom of the base plate via a mounting plate, and a moving part is connected to one end of each first rotating part.
[0007] In one specific implementation, the bottom of the movable component is connected to a first telescopic damping rod, the other end of the first telescopic damping rod is connected to the top of the fixed plate, and a first spring is sleeved on the outer surface of the first telescopic damping rod.
[0008] In the above implementation process, by setting the first telescopic damping rod and the first spring, when the explosion-proof nickel-metal hydride battery shakes, the base plate will release the impact force downward, causing the base plate to tilt and drive the moving parts to move downward. By cooperating with the first spring and the first telescopic damping rod, the impact force can be greatly reduced.
[0009] In one specific implementation, the top of the fixing plate is connected to four sets of limiting members, one side of which is in close contact with the outer surface of the base plate.
[0010] In the above implementation process, the tilting direction of the base plate can be limited by the setting of the limiting component, and it can only tilt in two directions, while the other two directions are restricted by the limiting component.
[0011] In one specific implementation, a second rotating member is rotatably connected to one side of the limiting member via a mounting plate. One end of the second rotating member is connected to a first circular plate. A second telescopic damping rod is connected to one side of the first circular plate. The other end of the second telescopic damping rod is connected to a third rotating member. The third rotating member is rotatably connected to one side of the moving member via the mounting plate.
[0012] In the above implementation process, by setting the second telescopic damping rod, the second telescopic damping rod can be stretched when the moving part moves downward.
[0013] In one specific implementation, a second spring is sleeved on the outer surface of the second telescopic damping rod, one end of the second spring is connected to one side of the first circular plate, and the other end of the second spring is connected to one side of the second circular plate.
[0014] In the above implementation process, by setting the second spring, when the moving part moves downward, the impact force can be further reduced by the second spring in conjunction with the second telescopic damping rod, thereby reducing the shaking amplitude of the explosion-proof nickel-metal hydride battery.
[0015] In one specific implementation, the support mechanism includes four sets of vertical plates, which are connected to the top of the fixed plate, and a rotating shaft is rotatably connected between two sets of vertical plates.
[0016] In the above implementation process, the rotating shaft can be set to rotate between the two sets of vertical plates.
[0017] In one specific implementation, a protrusion is connected to the outer surface of the shaft, and the protrusion is located below the base plate.
[0018] In the above implementation process, by setting the protrusion, when the explosion-proof nickel-metal hydride battery shakes and generates a downward impact force, the base plate will press down on the protrusion, which can drive the rotating shaft to rotate.
[0019] In one specific implementation, an L-shaped component is connected to the outer surface of the rotating shaft, and a support plate is connected to the other end of the L-shaped component.
[0020] In the above implementation process, the L-shaped component can be driven to rotate when the shaft rotates, thereby driving the support plate to rotate. When the explosion-proof nickel-metal hydride battery passes through the protective mechanism and the shaking amplitude is still large, the support plate can provide a certain support force to prevent the explosion-proof nickel-metal hydride battery from tilting too much and ensure the reliability of the electrical connection.
[0021] In one specific implementation, a U-shaped component is connected to the top of the vertical plate.
[0022] In the above implementation process, by setting the U-shaped part, the L-shaped part can not pass through the U-shaped part, and can only move to one side of the U-shaped part.
[0023] In one specific implementation, one end of the L-shaped member is connected to a third spring, and the other end of the third spring is connected to the top of the fixed plate.
[0024] In the above implementation process, by setting the third spring, the elastic potential energy can be released through the third spring. When the base plate is tilted without being impacted, the outer surface of the L-shaped part is pressed tightly against one side of the limiting part, and the top of the protrusion is pressed tightly against the bottom of the base plate.
[0025] Compared with the prior art, the beneficial effects of this application are as follows: By setting up the protective mechanism and the support mechanism, when the explosion-proof nickel-metal hydride battery shakes, the base plate will release the impact force downwards, the base plate will tilt, and the moving part will move downwards. Through the first spring and the first telescopic damping rod, the impact force generated by the shaking of the explosion-proof nickel-metal hydride battery can be reduced, and the shaking amplitude of the explosion-proof nickel-metal hydride battery can be reduced. When the moving part moves downwards, it will also stretch the second spring and the second telescopic damping rod. Through the elastic potential energy released by the second spring and the second telescopic damping rod, the impact force generated by the shaking of the explosion-proof nickel-metal hydride battery can be further reduced. Furthermore, by setting up the support plate, when the explosion-proof nickel-metal hydride battery passes through the protective mechanism and the shaking amplitude is still large, the support plate can provide a certain support force to prevent the explosion-proof nickel-metal hydride battery from tilting too much, and can ensure the reliability of electrical connection. This solves the problem that the rubber pad's effect of absorbing impact force is generally not good. When the car is driving on bumpy roads, it is easy to cause the nickel-metal hydride battery to shake, which may damage the battery's sealing, leading to leakage or hydrogen evolution, and causing damage to the nickel-metal hydride battery. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of an explosion-proof nickel-metal hydride battery with a dual overvoltage and overcurrent protection circuit provided in the embodiments of this application; Figure 2 A schematic diagram of the structure of an explosion-proof nickel-metal hydride battery provided for an embodiment of this application; Figure 3 A schematic diagram of the base plate structure provided for an embodiment of this application; Figure 4 A schematic diagram of the moving part structure provided for an embodiment of this application; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A schematic diagram of the bump structure provided for an embodiment of this application; Figure 7 A schematic diagram of the third spring structure provided for an embodiment of this application; Figure 8 A schematic diagram of the support plate structure provided for an embodiment of this application.
[0028] In the diagram: 1. Explosion-proof nickel-metal hydride battery; 2. Protective mechanism; 201. Base plate; 202. Limiting component; 203. Moving component; 204. First rotating component; 205. Mounting plate; 206. First circular plate; 207. First telescopic damping rod; 208. First spring; 209. Second spring; 2010. Second telescopic damping rod; 2011. Second rotating component; 2012. Third rotating component; 2013. Second circular plate; 3. Support mechanism; 301. Protrusion; 302. Rotating shaft; 303. Vertical plate; 304. Third spring; 305. U-shaped component; 306. L-shaped component; 307. Support plate; 4. Fixing plate. Detailed Implementation
[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0030] Please see Figure 1 This application provides an explosion-proof nickel-metal hydride battery with dual overvoltage and overcurrent protection circuits, including an explosion-proof nickel-metal hydride battery 1.
[0031] Please see Figure 1 and Figure 2 The explosion-proof nickel-metal hydride battery 1 is internally equipped with an explosion-proof diaphragm and a pressure sensor for overvoltage protection. It also contains a PTC thermistor for overcurrent protection. A mounting plate 4 for mounting the battery 1 inside the vehicle is located below it. A protective mechanism 2 to reduce battery sway is located at the bottom of the battery 1. Support mechanisms 3 on both sides of the battery 1 prevent excessive tilting. When the internal pressure of the battery increases due to overcharging or abnormal reactions, the explosion-proof diaphragm ruptures to release the pressure, and the pressure sensor trigger circuit is cut off, providing overvoltage protection for the battery 1. The PTC thermistor causes a rapid increase in resistance when the current is too high, limiting the current to prevent overheating and providing overcurrent protection. The explosion-proof diaphragm, pressure sensor, and PTC thermistor are existing technologies and are not marked in the figure; therefore, they will not be described in detail here.
[0032] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The protective mechanism 2 includes a base plate 201, which is connected to the bottom of the explosion-proof nickel-metal hydride battery 1. The bottom of the base plate 201 is rotatably connected to two sets of first rotating parts 204 via a mounting plate 205. One end of the first rotating part 204 is connected to a moving part 203.
[0033] In the specific configuration, the bottom of the movable component 203 is connected to a first telescopic damping rod 207, and the other end of the first telescopic damping rod 207 is connected to the top of the fixed plate 4. A first spring 208 is sleeved on the outer surface of the first telescopic damping rod 207. Through the configuration of the first telescopic damping rod 207 and the first spring 208, when the explosion-proof nickel-metal hydride battery 1 shakes, the base plate 201 will release an impact force downward, causing the base plate 201 to tilt and drive the movable component 203 to move downward. Through the cooperation of the first spring 208 and the first telescopic damping rod 207, the impact force can be greatly reduced.
[0034] In the specific setup, the top of the fixed plate 4 is connected to four sets of limiting members 202. One side of the limiting member 202 is in close contact with the outer surface of the base plate 201. The limiting member 202 can limit the tilting direction of the base plate 201, which can only tilt in two directions. The other two directions are restricted by the limiting member 202.
[0035] In a specific configuration, a second rotating member 2011 is rotatably connected to one side of the limiting member 202 via a mounting plate 205. One end of the second rotating member 2011 is connected to a first circular plate 206. A second telescopic damping rod 2010 is connected to one side of the first circular plate 206. The other end of the second telescopic damping rod 2010 is connected to a third rotating member 2012. The third rotating member 2012 is rotatably connected to one side of the moving member 203 via the mounting plate 205. The second telescopic damping rod 2010 can be stretched when the moving member 203 moves downward.
[0036] In a specific configuration, a second spring 209 is fitted onto the outer surface of the second telescopic damping rod 2010. One end of the second spring 209 is connected to one side of the first circular plate 206, and the other end of the second spring 209 is connected to one side of the second circular plate 2013. By setting the second spring 209, when the moving part 203 moves downward, the impact force can be further reduced by the second spring 209 in conjunction with the second telescopic damping rod 2010, thereby reducing the shaking amplitude of the explosion-proof nickel-metal hydride battery 1.
[0037] In a specific configuration, the support mechanism 3 includes four sets of vertical plates 303, which are connected to the top of the fixed plate 4. A rotating shaft 302 is rotatably connected between two sets of vertical plates 303. The rotating shaft 302 can rotate between the two sets of vertical plates 303.
[0038] In a specific configuration, a protrusion 301 is connected to the outer surface of the rotating shaft 302. The protrusion 301 is located below the base plate 201. By setting the protrusion 301, when the explosion-proof nickel-metal hydride battery 1 shakes and generates a downward impact force, the base plate 201 will press down on the protrusion 301, which can drive the rotating shaft 302 to rotate.
[0039] In the specific configuration, an L-shaped component 306 is connected to the outer surface of the rotating shaft 302, and a support plate 307 is connected to the other end of the L-shaped component 306. The L-shaped component 306 can rotate when the rotating shaft 302 rotates, thereby driving the support plate 307 to rotate. When the explosion-proof nickel-metal hydride battery 1 passes through the protective mechanism 2 and the shaking amplitude is still large, the support plate 307 can provide a certain support force to prevent the explosion-proof nickel-metal hydride battery 1 from tilting at an excessive angle, thus ensuring the reliability of the electrical connection.
[0040] In a specific configuration, a U-shaped piece 305 is connected to the top of the vertical plate 303. The U-shaped piece 305 prevents the L-shaped piece 306 from passing through the U-shaped piece 305 and allows it to move only to one side of the U-shaped piece 305.
[0041] In a specific configuration, one end of the L-shaped component 306 is connected to a third spring 304, and the other end of the third spring 304 is connected to the top of the fixed plate 4. The third spring 304 releases elastic potential energy, so that when the base plate 201 is tilted without being impacted, the outer surface of the L-shaped component 306 is in close contact with one side of the limiting component 202, and the top of the protrusion 301 is in close contact with the bottom of the base plate 201.
[0042] The working principle of the explosion-proof nickel-metal hydride battery with dual overvoltage and overcurrent protection circuits is as follows: When the explosion-proof nickel-metal hydride battery 1 is shaken, the base plate 201 releases an impact force downwards, causing the base plate 201 to tilt and drive the moving part 203 to move downwards. Through the first spring 208 and the first telescopic damping rod 207, the impact force generated by the shaking of the explosion-proof nickel-metal hydride battery 1 can be reduced, thus reducing the amplitude of the shaking. Simultaneously, the downward movement of the moving part 203 also stretches the second spring 209 and the second telescopic damping rod 2010. The elastic potential energy released by the second spring 209 and the second telescopic damping rod 2010 further reduces the impact force on the explosion-proof nickel-metal hydride battery. The impact force generated by shaking is reduced, and the amplitude of shaking of the explosion-proof nickel-metal hydride battery 1 is reduced. Furthermore, by setting up a support plate 307, when the explosion-proof nickel-metal hydride battery 1 shakes significantly after passing through the protective mechanism 2, the base plate 201 will press down on the protrusion 301, causing the rotating shaft 302 to rotate. This allows one side of the support plate 307 to contact one side of the explosion-proof nickel-metal hydride battery 1, providing a certain amount of support and preventing the explosion-proof nickel-metal hydride battery 1 from tilting at an excessive angle. This ensures the reliability of the electrical connection and solves the problem that the rubber pad's effect of absorbing impact force is generally poor. When a car is driving on bumpy roads, the nickel-metal hydride battery is prone to shaking, which may damage the battery's seal, leading to leakage or hydrogen evolution and causing damage to the nickel-metal hydride battery.
[0043] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An explosion-proof nickel-metal hydride battery equipped with a dual overvoltage and overcurrent protection circuit, characterized in that, include An explosion-proof nickel-metal hydride battery (1) is provided with an explosion-proof membrane and a pressure sensor for overvoltage protection inside the explosion-proof nickel-metal hydride battery (1), a PTC thermistor for overcurrent protection inside the explosion-proof nickel-metal hydride battery (1), a fixing plate (4) for mounting the explosion-proof nickel-metal hydride battery (1) inside the car is provided below the explosion-proof nickel-metal hydride battery (1), a protective mechanism (2) for reducing the shaking of the explosion-proof nickel-metal hydride battery (1) is provided at the bottom of the explosion-proof nickel-metal hydride battery (1), and a support mechanism (3) for preventing the explosion-proof nickel-metal hydride battery (1) from tilting excessively is provided on both sides of the explosion-proof nickel-metal hydride battery (1). The protective mechanism (2) includes a base plate (201), which is connected to the bottom of the explosion-proof nickel-hydrogen battery (1). The bottom of the base plate (201) is rotatably connected to two sets of first rotating parts (204) via a mounting plate (205). One end of the first rotating part (204) is connected to a moving part (203).
2. The explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuit according to claim 1, characterized in that, The bottom of the movable part (203) is connected to a first telescopic damping rod (207), the other end of the first telescopic damping rod (207) is connected to the top of the fixed plate (4), and a first spring (208) is sleeved on the outer surface of the first telescopic damping rod (207).
3. The explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuit according to claim 2, characterized in that, The top of the fixing plate (4) is connected to four sets of limiting members (202), and one side of the limiting member (202) is in close contact with the outer surface of the bottom plate (201).
4. The explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuit according to claim 3, characterized in that, One side of the limiting member (202) is rotatably connected to a second rotating member (2011) via a mounting plate (205). One end of the second rotating member (2011) is connected to a first circular plate (206). One side of the first circular plate (206) is connected to a second telescopic damping rod (2010). The other end of the second telescopic damping rod (2010) is connected to a third rotating member (2012). The third rotating member (2012) is rotatably connected to one side of the moving member (203) via the mounting plate (205).
5. An explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuits according to claim 4, characterized in that, The outer surface of the second telescopic damping rod (2010) is fitted with a second spring (209), one end of the second spring (209) is connected to one side of the first circular plate (206), and the other end of the second spring (209) is connected to one side of the second circular plate (2013).
6. The explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuit according to claim 1, characterized in that, The support mechanism (3) includes four sets of vertical plates (303), which are connected to the top of the fixed plate (4), and a rotating shaft (302) is rotatably connected between the two sets of vertical plates (303).
7. An explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuits according to claim 6, characterized in that, The outer surface of the rotating shaft (302) is connected to a protrusion (301), which is located below the base plate (201).
8. An explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuits according to claim 7, characterized in that, The outer surface of the rotating shaft (302) is connected to an L-shaped piece (306), and the other end of the L-shaped piece (306) is connected to a support plate (307).
9. An explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuits according to claim 8, characterized in that, The top of the vertical plate (303) is connected to a U-shaped piece (305).
10. An explosion-proof nickel-metal hydride battery with overvoltage and overcurrent dual protection circuits according to claim 9, characterized in that, One end of the L-shaped member (306) is connected to a third spring (304), and the other end of the third spring (304) is connected to the top of the fixing plate (4).