Sealed storage battery capable of internal pressure relief

Abstract

The utility model provides a sealed storage battery capable of internal pressure relief, which relates to the technical field of storage batteries and comprises a shell, a pressure relief mechanism is mounted at the upper end of the shell, a battery pack is mounted in the shell, the pressure relief mechanism comprises an exhaust hole, and the exhaust hole is arranged at the upper end in the shell in a penetrating manner. When the pressure in the shell is too high, the air pressure can push the bottom plate to move upwards, so that the bottom plate drives the first pressure relief groove and the isolation block to move upwards, and when the first pressure relief groove is separated from the sealing block, the air pressure can enter the exhaust hole along the first pressure relief groove; and when the isolation block is separated from the second pressure relief groove, the air pressure can be automatically discharged along the second pressure relief groove, so that the situation that the internal pressure of the shell is too high and the shell is damaged is avoided, and the shell is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, in particular to a sealed storage battery capable of internal pressure relief. Background Art

[0002] With the rapid development of renewable energy and electric vehicles, the performance and safety of batteries, as one of their core components, have received widespread attention. Batteries may produce gas during operation, causing internal pressure to rise. If this pressure is not released in time, it may damage the structural integrity of the battery and even cause safety accidents. At the same time, although some sealed batteries on the market are designed with pressure relief systems, they often have slow reaction speeds and incomplete pressure relief. These situations may result in the inability to release pressure in a timely and effective manner when the internal pressure of the battery is too high, thereby increasing the risk of battery damage. Therefore, we propose a sealed battery that can release pressure internally to solve the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide a sealed storage battery capable of internal pressure relief, which solves the problem that the storage battery may generate gas during operation, resulting in increased internal pressure. If this pressure is not released in time, it may damage the structural integrity of the storage battery and even cause a safety accident. At the same time, although some sealed storage batteries on the market are designed with a pressure relief system, they often have problems such as slow reaction speed and incomplete pressure relief. These problems may result in the inability to timely and effectively relieve the pressure when the internal pressure of the battery is too high, thereby increasing the risk of battery damage.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A sealed storage battery capable of internal pressure relief comprises a shell, a pressure relief mechanism is installed at the upper end of the shell, a battery pack is installed inside the shell, the pressure relief mechanism comprises an exhaust hole, the exhaust hole is penetrated through the inner upper end of the shell, a connecting groove is provided at the inner lower end of the exhaust hole, a bottom plate is movably installed inside the connecting groove, the lower surface of the bottom plate and the connecting groove are fitted together, a sealing tube is fixedly installed on the upper end of the shell, the sealing tube and the exhaust hole are connected, an isolation block is movably installed inside the sealing tube, the outer surface of the isolation block is fitted with the inner wall of the sealing tube, the isolation block and the bottom plate are connected, a plurality of No. 2 pressure relief grooves are penetrated through the outer upper end of the sealing tube, and the No. 2 pressure relief grooves and the isolation block are fitted together.

[0006] Preferably, a plurality of sealing blocks are fixedly mounted on the inner lower end of the connecting groove, and a plurality of No. 1 pressure relief grooves are penetrated through the surface of the bottom plate, and the No. 1 pressure relief grooves are in contact with the sealing blocks.

[0007] Preferably, a fixing plate is fixedly installed at the inner upper end of the connecting groove, a guide groove is penetrated inside the fixing plate, a guide plate is movably penetrated inside the guide groove, and the lower end of the guide plate is connected to the bottom plate.

[0008] Preferably, the guide groove and the guide plate are both polygonal, a spring is sleeved on the outer side of the guide plate between the fixed plate and the bottom plate, a transmission rod is fixedly installed on the upper end of the guide plate, and the upper end of the transmission rod is connected to the isolation block.

[0009] Preferably, an extension tube is fixedly mounted on the upper end of the exhaust hole, the extension tube is located inside the sealing tube, and the lower end of the isolation block is snap-fitted and mounted between the sealing tube and the extension tube.

[0010] Preferably, a handle is movably installed at the upper end of the interior of the sealing tube, and the lower end of the handle is connected to the isolation block. Filters are respectively installed inside the No. 2 pressure relief groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) In the utility model, when the pressure inside the shell is too high, the air pressure will push the bottom plate to move upward, so that the bottom plate drives the No. 1 pressure relief groove and the isolation block to move upward, so that when the No. 1 pressure relief groove is separated from the sealing block, the air pressure can enter the exhaust hole along the No. 1 pressure relief groove, and then when the isolation block and the No. 2 pressure relief groove are separated, the air pressure can be automatically discharged along the No. 2 pressure relief groove, thereby avoiding damage caused by excessive pressure inside the shell and better protecting it.

[0013] (2) In the utility model, the thrust of the spring can be used to control the air pressure in the shell to reach the specified requirement, and then the spring can be pushed to release the pressure, thereby avoiding the leakage of gas inside the shell, and at the same time, the bottom plate and the isolation block can be better controlled to seal the No. 1 pressure relief groove and the No. 2 pressure relief groove, thereby preventing external water vapor and dust from entering the shell and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a sealed storage battery capable of internal pressure relief according to the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of a sealed storage battery capable of internal pressure relief according to the utility model;

[0016] Figure 3 The utility model is a sealed storage battery capable of internal pressure relief Figure 2Schematic diagram of the cross-section structure at AA in the middle;

[0017] Figure 4 The utility model is a sealed storage battery capable of internal pressure relief Figure 2 Schematic diagram of the cross-section structure at BB in the middle;

[0018] Figure 5 The utility model is a sealed storage battery capable of internal pressure relief Figure 3 The enlarged structural diagram at C in the middle;

[0019] Figure 6 The utility model is a sealed storage battery capable of internal pressure relief Figure 4 Enlarged structural diagram at point D in the middle.

[0020] In the figure: 1. shell; 2. pressure relief mechanism; 201. exhaust hole; 202. connecting groove; 203. fixing plate; 204. guide plate; 205. guide groove; 206. bottom plate; 207. No. 1 pressure relief groove; 208. sealing block; 209. spring; 210. transmission rod; 211. sealing tube; 212. extension tube; 213. No. 2 pressure relief groove; 214. isolation block; 215. handle; 3. battery pack. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 6 As shown, the embodiment of the utility model proposes a sealed storage battery capable of internal pressure relief, comprising a shell 1, a pressure relief mechanism 2 is installed at the upper end of the shell 1, a battery pack 3 is installed inside the shell 1, the pressure relief mechanism 2 comprises an exhaust hole 201, the exhaust hole 201 is arranged through the inner upper end of the shell 1, a connecting groove 202 is arranged at the inner lower end of the exhaust hole 201, a bottom plate 206 is movably installed inside the connecting groove 202, and the lower surface of the bottom plate 206 and the connecting groove 202 are fitted together, a sealing tube 211 is fixedly installed on the upper end of the shell 1, the sealing tube 211 and the exhaust hole 201 are connected, an isolation block 214 is movably installed inside the sealing tube 211, the outer surface of the isolation block 214 is fitted with the inner wall of the sealing tube 211, the isolation block 214 and the bottom plate 206 are connected, and a plurality of No. 2 pressure relief grooves 213 are arranged through the outer upper end of the sealing tube 211, and the No. 2 pressure relief grooves 213 and the isolation block 214 are fitted together.

[0023] like Figure 5 and Figure 6 As shown, in another embodiment of the utility model, a plurality of sealing blocks 208 are fixedly installed at the lower end of the inner part of the connecting groove 202, a plurality of No. 1 pressure relief grooves 207 are penetrated on the surface of the bottom plate 206, and the No. 1 pressure relief grooves 207 are fitted with the sealing blocks 208, and a fixing plate 203 is fixedly installed at the upper end of the inner part of the connecting groove 202, and a guide groove 205 is penetrated inside the fixing plate 203, and a guide plate 204 is movably penetrated inside the guide groove 205, and the lower end of the guide plate 204 is connected to the bottom plate 206, and the guide groove 205 and the guide plate 204 are both set as polygons, located between the fixing plate 203 and the bottom plate 206. A spring 209 is sleeved on the outer side of the guide plate 204 between the plates 206, a transmission rod 210 is fixedly installed on the upper end of the guide plate 204, and the upper end of the transmission rod 210 is connected to the isolation block 214, an extension tube 212 is fixedly installed on the upper end of the exhaust hole 201, and the extension tube 212 is located inside the sealing tube 211, and the lower end of the isolation block 214 is snap-fitted between the sealing tube 211 and the extension tube 212, a handle 215 is movably installed through the upper end of the inner part of the sealing tube 211, and the lower end of the handle 215 is connected to the isolation block 214, and filters are respectively installed inside the No. 2 pressure relief groove 213.

[0024] When the internal air pressure of the housing 1 is higher than the thrust of the spring 209, the air pressure can push the bottom plate 206 to move upward, so that the bottom plate 206 drives the No. 1 pressure relief groove 207 to move upward along the sealing block 208. At the same time, the bottom plate 206 and the transmission rod 210 push the isolation block 214 to move upward. Then, when the No. 1 pressure relief groove 207 is separated from the inside of the sealing block 208, the air pressure in the housing 1 can enter the exhaust hole 201 along the No. 1 pressure relief groove 207, and then the isolation block 214 and the No. 2 pressure relief groove 207 are separated from the inside of the sealing block 208. When the pressure relief groove 213 is separated, the air pressure in the exhaust hole 201 can be discharged along the No. 2 pressure relief groove 213. Then, after the air pressure in the housing 1 is released, the spring 209 will push the bottom plate 206 to reset, so that the bottom plate 206 drives the No. 1 pressure relief groove 207 to fit with the sealing block 208 again. At the same time, the lower end of the isolation block 214 will be inserted into the extension tube 212 and the sealing tube 211 again to perform sealing work, ensuring that water vapor and dust from the outside cannot enter the housing 1 to cause pollution.

[0025] The sealing block 208 is used to cooperate with the No. 1 pressure relief groove 207 to perform sealing work, so as to prevent the electrolyte in the housing 1 from leaking through the sealing block 208 and the No. 1 pressure relief groove 207 during the shaking process;

[0026] The user controls the pressure inside the housing 1 by the thrust of the spring 209 to push the bottom plate 206 to automatically release the pressure, thereby increasing the pressure release reaction speed of the bottom plate 206 and better protecting the whole.

[0027] By setting the guide plate 204 and the guide groove 205 to be polygonal, the bottom plate 206 can be positioned so that the bottom plate 206 can only move straight up and down without rotating to cause the first pressure relief groove 207 and the sealing block 208 to fail to engage, thereby better positioning the bottom plate 206;

[0028] The extension tube 212 and the sealing tube 211 are used to seal the lower end of the isolation block 214 to prevent external water vapor from entering the exhaust hole 201 through the isolation block 214 and the sealing tube 211;

[0029] The filter in the second pressure relief groove 213 is used to filter dust and the like in the air, thereby further ensuring that dust and the like will not enter the housing 1 and pollute the electrolyte.

[0030] The working principle of a sealed battery capable of internal pressure relief:

[0031] When in use, first when the internal air pressure of the shell 1 is higher than the thrust of the spring 209, the air pressure can push the bottom plate 206 to move upward, so that the bottom plate 206 drives the No. 1 pressure relief groove 207 to move upward along the sealing block 208. At the same time, the bottom plate 206 and the transmission rod 210 of the specification push the isolation block 214 to move upward. Then, when the No. 1 pressure relief groove 207 is separated from the inside of the sealing block 208, the air pressure in the shell 1 can enter the exhaust hole 201 along the No. 1 pressure relief groove 207, and then the isolation block 214 and the No. 2 pressure relief groove are separated. When 213 is separated, the air pressure in the exhaust hole 201 can be discharged along the No. 2 pressure relief groove 213. Then, after the air pressure in the outer shell 1 is released, the spring 209 will push the bottom plate 206 to reset, so that the bottom plate 206 can drive the No. 1 pressure relief groove 207 to fit with the sealing block 208 again. At the same time, the lower end of the isolation block 214 will be stuck between the extension tube 212 and the sealing tube 211 again to perform sealing work, ensuring that external water vapor, dust, etc. cannot enter the outer shell 1 to cause pollution, while waiting for the next pressure relief work.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A sealed storage battery capable of internal pressure relief, comprising a housing (1), characterized in that: A pressure relief mechanism (2) is installed at the upper end of the shell (1), a battery pack (3) is installed inside the shell (1), the pressure relief mechanism (2) comprises an exhaust hole (201), the exhaust hole (201) is arranged through the upper end of the shell (1), a connecting groove (202) is provided at the lower end of the exhaust hole (201), a bottom plate (206) is movably installed inside the connecting groove (202), the lower surface of the bottom plate (206) and the connecting groove (202) are in contact with each other, and the upper end of the shell (1) is fixed A sealing tube (211) is fixedly installed, the sealing tube (211) and the exhaust hole (201) are connected, an isolation block (214) is movably installed inside the sealing tube (211), the outer surface of the isolation block (214) is in contact with the inner wall of the sealing tube (211), the isolation block (214) is connected to the bottom plate (206), and a plurality of No. 2 pressure relief grooves (213) are penetrated at the upper end of the outer side of the sealing tube (211), and the No. 2 pressure relief grooves (213) and the isolation block (214) are in contact with each other.

2. A sealed storage battery capable of internal pressure relief according to claim 1, characterized in that: A plurality of sealing blocks (208) are fixedly mounted on the inner lower end of the connection groove (202), and a plurality of No. 1 pressure relief grooves (207) are provided through the surface of the bottom plate (206), wherein the No. 1 pressure relief grooves (207) are in close contact with the sealing blocks (208).

3. A sealed storage battery capable of internal pressure relief according to claim 2, characterized in that: A fixing plate (203) is fixedly installed at the upper end of the connection groove (202), a guide groove (205) is provided inside the fixing plate (203), a guide plate (204) is movably installed inside the guide groove (205), and the lower end of the guide plate (204) is connected to the bottom plate (206).

4. A sealed storage battery capable of internal pressure relief according to claim 3, characterized in that: The guide groove (205) and the guide plate (204) are both polygonal in shape; a spring (209) is sleeved and installed on the outer side of the guide plate (204) located between the fixed plate (203) and the bottom plate (206); a transmission rod (210) is fixedly installed on the upper end of the guide plate (204); and the upper end of the transmission rod (210) is connected to the isolation block (214).

5. A sealed storage battery capable of internal pressure relief according to claim 4, characterized in that: An extension tube (212) is fixedly mounted on the upper end of the exhaust hole (201), the extension tube (212) is located inside the sealing tube (211), and the lower end of the isolation block (214) is clamped and mounted between the sealing tube (211) and the extension tube (212).

6. A sealed storage battery capable of internal pressure relief according to claim 1, characterized in that: A handle (215) is movably installed through the upper end of the sealing tube (211), and the lower end of the handle (215) is connected to the isolation block (214). Filters are installed inside the second pressure relief groove (213).

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