CN112103449A

CN112103449A - Storage battery shell

Info

Publication number: CN112103449A
Application number: CN202011288091.5A
Authority: CN
Inventors: 朱雪峰
Original assignee: Nanjing Wanganshi Intelligent System Co ltd
Current assignee: Anhui Jihou Intelligent Technology Co.,Ltd.
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2020-12-18
Anticipated expiration: 2040-11-17
Also published as: CN112103449B

Abstract

The invention discloses a storage battery shell, which comprises a shell and electrodes; the shell is provided with safety valves, and exhaust holes of all the safety valves are communicated and connected with the through pipe; a cylinder body is vertically arranged on the through pipe and communicated with the space of the through pipe; the outer part of the cylinder body is wrapped by a sealing shell, a piston is arranged in the cylinder body, a first one-way valve is arranged on the cylinder body wall of the piston, and the direction of the first one-way valve is from the space of the sealing shell to the space of the cylinder body; the wall of the cylinder body on the other side of the piston is provided with a plurality of second one-way valves, and the direction of the second one-way valves is from the cylinder body to the sealing shell; the top of the sealed shell is provided with a normally open pressure limiting valve which is automatically closed after the pressure exceeds a certain threshold value, and the bottom of the sealed shell is provided with a reticular framework containing sodium carbonate; the cylinder body and the sealing shell are made of hard transparent materials. Has the advantages that: the gas generated by charging and discharging is used as power, and the position of the piston is used for judging whether the interior of the battery is normal at present, so that more safety is provided for a user.

Description

Storage battery shell

Technical Field

The invention relates to the field of batteries, in particular to a storage battery shell.

Background

The storage battery has wide application range, and provides electric energy for starting and lighting the automobile if being loaded on the automobile; the storage battery used at present is mainly a lead storage battery. Lead storage batteries, however, face several problems in manufacture and use.

For example, after a battery is used for a long time, hydrogen and oxygen are generated, and the internal pressure of the battery case becomes large. And as the service life of the battery is over, internal heat is generated, which further increases the internal pressure.

It can be seen that the generation of hydrogen and oxygen and the excessive internal pressure due to internal heat at the end of life are respectively included in the two battery periods. At present, for the use of lead storage batteries, people generally can only judge the actual use state of the batteries, but have no way of monitoring the change of the storage batteries, and particularly, a user does not know what state the batteries are in at present.

Disclosure of Invention

Aiming at solving the problem that the storage battery normally discharges hydrogen and oxygen according to the step 1; 2. discharging the electrolyte and relieving the internal pressure; 3. and (5) detecting the two situations.

The invention provides a storage battery shell, which solves the problem that a storage battery changes when in use.

In order to achieve the purpose, the invention adopts the following technical scheme:

a battery case comprises a lead battery case and two electrodes arranged on the case;

each lead storage battery groove in the shell is provided with a safety valve, and the exhaust holes of all the safety valves are communicated and connected with a through pipe; a cylinder body with a sealed circular cavity is vertically arranged on the through pipe and is communicated with the space of the through pipe; the outer part of the cylinder body is wrapped by a sealing shell body with a cavity structure, a piston is arranged in the cylinder body, a first one-way valve is arranged on the wall of the cylinder body, close to one side of the through pipe, of the piston, and the direction of the first one-way valve is from the space of the sealing shell body to the space of the cylinder body; a plurality of second one-way valves are uniformly and vertically arranged on the wall of the cylinder body on the other side of the piston, and the direction of the second one-way valves is from the cylinder body to the sealing shell; the top of the sealed shell is provided with a normally open pressure limiting valve which is automatically closed after the pressure exceeds a certain threshold value, and the bottom of the sealed shell is provided with a reticular framework containing sodium carbonate; the cylinder body and the sealing shell are made of hard transparent materials.

More specifically, the pressure limiting valve comprises a valve body, the interior of the valve body is a circular sealed cavity, a movable plug which slides relative to the valve body is arranged in the pressure limiting valve, and a spring connected with the top of the valve body is arranged above the movable plug; the movable plug is provided with a through hole, and the movable plug is provided with an exhaust hole close to the valve body wall at the top of the valve body.

Further, a pressure relief valve is arranged on the sealing shell.

Further, the specific material of the mesh-shaped framework is breathable sponge.

Compared with the prior art, the invention has the following beneficial effects: the gas generated by charging and discharging is used as power, and the position of the piston is used for judging whether the interior of the battery is normal at present, so that more safety is provided for a user.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the pressure limiting valve of the present invention.

In the figure, 1 shell, 2 electrodes, 3 safety valves, 31 through pipes, 4 cylinders, 41 first one-way valves, 42 second one-way valves, 5 pistons, 6 sealing shells, 61 pressure relief valves, 7 pressure limiting valves, 70 valve bodies, 71 moving plugs, 72 through holes, 73 springs, 74 exhaust holes and 8 mesh frameworks.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 and 2, a battery case includes a lead battery case 1, and two electrodes 2 provided on the case 1. In the battery shell, there are multiple battery slots, there are safety valves 3 on each lead battery slot in the said shell 1, the exhaust eye of all safety valves 3 communicates with the siphunculus 31; a cylinder body 4 with a round cavity sealed inside is vertically arranged on the through pipe 31, and the cylinder body 4 is communicated with the space of the through pipe 31. In general, the safety valve 3 on the battery can is only used for pressure relief, and the pressure relief is only used for discharging hydrogen and oxygen.

The outside of the cylinder 4 is wrapped by a sealing shell 6 with a cavity structure, a piston 5 is arranged in the cylinder 4, the wall of the cylinder 4, close to one side of the through pipe 31, of the piston 5 is provided with a first one-way valve 41, and the direction of the first one-way valve 41 is from the space of the sealing shell 6 to the space of the cylinder 4; a plurality of second one-way valves 42 are uniformly and vertically arranged on the wall of the cylinder 4 on the other side of the piston 5, and the direction of the second one-way valves 42 is from the cylinder 4 to the sealed shell 6; the top of the sealing shell 6 is provided with a normally open pressure limiting valve 7 which is automatically closed after the pressure exceeds a certain threshold value, the bottom of the sealing shell 6 is provided with a reticular framework 8 containing sodium carbonate, the sealing shell 6 is provided with a pressure release valve 61, and more specifically, the reticular framework 8 is made of breathable sponge. The cylinder 4 and the sealing shell 6 are made of hard transparent materials. Wherein, the concrete structure of pressure limiting valve 7 includes: a valve body 70 with a circular sealed cavity inside, a moving plug 71 sliding relative to the valve body 70 is arranged inside, and a spring 73 connected with the top of the valve body 70 is arranged above the moving plug 71; the moving plug 71 is provided with a through hole 72, and the wall of the valve body 70, close to the top of the valve body 70, of the moving plug 71 is provided with an exhaust hole 74.

In the present invention, the cylindrical body 4 and the sealing case 6 are made of hard transparent materials.

When the storage battery shell is produced, the piston 5 in the figure 1 needs to be placed at the bottom of the cylinder 4, and enough space is reserved at the top of the cylinder 4 for stroke buffering. And when the installation is carried out, the sealing shell 6 is ensured to be vertically arranged so as to prevent the sodium carbonate in the reticular framework 8 from being poured. For fixing the sodium carbonate, a sponge or other material with a mesh-like skeleton can be used.

When the battery is normally used, hydrogen and oxygen are generated after the battery is assembled as shown in fig. 1, so that the internal pressure of the case 1 is increased, and then the gas is discharged into the pipe 31 through the safety valve 3. As the air pressure in the through pipe 31 gradually increases, the piston 5 will be pushed to move slowly. Here, it should be noted that: the distance that the piston 5 moves within the cylinder 4 is determined to determine whether a new battery has been charged a number of times.

With normal use and after being charged and discharged for many times, the generated gas can push the piston 5 to move until the accumulated gas meets the first and second check valves 42, the gas is released into the sealed shell 6 through the second check valve 42 and then is discharged through the through hole 72 and the vent hole 74 of the normally open pressure limiting valve 7.

If the battery is used normally, the generated gas is always discharged to the atmosphere through such a passage. As the life of the battery is reduced, not only gas but also more heat is generated during the charging and discharging process, which further causes more gas to overflow, and since one second check valve 42 is not enough to satisfy the discharge, it is inevitable to further push the piston 5 to move further, even to move to the second check valve 42. Here, the user can determine whether the state of the battery is normal according to the position where the piston 5 moves.

When the temperature of the battery is increased sharply or the battery shell is damaged, electrolytic acid liquid flows out, so that the acid liquid can flow out from the safety valve 3 and then overflow from the second one-way valve 42, and further carbon dioxide is generated by reaction with sodium carbonate, when a large amount of carbon dioxide is generated, the pressure limiting valve 7 can be directly sealed, specifically, the movable plug 71 is moved upwards to block the exhaust hole 74, so that the pressure in the pressure release valve 6 is increased suddenly, and then the gas enters the cylinder 4 through the first one-way valve 41, so that the piston 5 is further pushed to move. Along with the movement of the piston 5 and the reaction of the acid liquor, the internal high pressure is relieved, the pressure limiting valve 7 is opened, and high-pressure gas is discharged.

It follows that, in any case, the movement of the piston 5 is promoted. Therefore, the user can observe the position of the piston 5 only through the transparent cylinder 4 and the sealed shell 6, and further judge the current actual state of the battery. It should be noted here that if the pressure in the sealed housing 6 is too high, it will be vented through a relief valve to prevent explosion.

Claims

1. A battery case, characterized by: comprises a lead storage battery shell (1) and two electrodes (2) arranged on the shell (1);

each lead storage battery groove in the shell (1) is provided with a safety valve (3), and the exhaust holes of all the safety valves (3) are communicated and connected with a through pipe (31); a cylinder body (4) with a sealed circular cavity is vertically arranged on the through pipe (31), and the cylinder body (4) is communicated with the space of the through pipe (31);

the outer part of the cylinder body (4) is wrapped by a sealing shell (6) with a cavity structure, a piston (5) is arranged in the cylinder body (4), the wall of the cylinder body (4) on one side, close to the through pipe (31), of the piston (5) is provided with a first one-way valve (41), and the direction of the first one-way valve (41) is from the space of the sealing shell (6) to the space of the cylinder body (4);

a plurality of second one-way valves (42) are uniformly and vertically arranged on the wall of the cylinder (4) on the other side of the piston (5), and the direction of the second one-way valves (42) is from the cylinder (4) to the sealing shell (6);

a normally open pressure limiting valve (7) which is automatically closed after the pressure exceeds a certain threshold value is arranged at the top of the sealing shell (6), and a reticular framework (8) containing sodium carbonate is arranged at the bottom of the sealing shell (6);

the cylinder (4) and the sealing shell (6) are made of hard transparent materials.

2. The battery case of claim 1, wherein: the pressure limiting valve (7) comprises a valve body (70) with a circular sealing cavity inside, a movable plug (71) which slides relative to the valve body (70) is arranged inside, and a spring (73) connected with the top of the valve body (70) is arranged above the movable plug (71); the movable plug (71) is provided with a through hole (72), and the wall of the movable plug (71), which is close to the top of the valve body (70), of the valve body (70) is provided with an exhaust hole (74).

3. The battery case of claim 1, wherein: a pressure relief valve (61) is arranged on the sealed shell (6).

4. The battery case of claim 1, wherein: the specific material of the reticular framework (8) is breathable sponge.