CN215414254U

CN215414254U - Leakage detection mechanism for storage battery shell

Info

Publication number: CN215414254U
Application number: CN202121377536.7U
Authority: CN
Inventors: 吴建丰; 黄莉莉
Original assignee: Changxing Jinrun Technology Co ltd
Current assignee: Changxing Jinrun Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-01-04
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to a leakage detection mechanism of a storage battery shell, wherein the storage battery shell is divided into a plurality of storage spaces by partition plates, and the top of each storage space is provided with a through hole, which is characterized by comprising the following components: and the sealing detection assembly is arranged above the storage battery shell and performs negative pressure test on the storage space corresponding to the through hole through one or more through holes. Through carrying out negative pressure detection to the storage space in the battery case, the gas in the battery case filled with the plate group is sucked out from between the plate group gaps and then is used for detecting the leakproofness through comparing the pressure intensity or pumping air, the problem that the conventional positive pressure detection cannot leak due to the fact that the filled plate group easily plugs up the damaged part of the battery jar is solved, and the detection accuracy is greatly improved.

Description

Leakage detection mechanism for storage battery shell

Technical Field

The utility model relates to the technical field of storage battery production equipment, in particular to a storage battery shell leakage detection mechanism.

Background

A lead-acid battery is a storage battery with electrodes mainly made of lead and its oxides and electrolyte solution of sulfuric acid solution. In the charge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the discharge state, the main components of the positive electrode and the negative electrode are lead sulfate. The nominal voltage of a single-lattice lead-acid battery is 2.0V, and the battery can be discharged to 1.5V and charged to 2.4V; in application, 6 single-cell lead-acid batteries are often connected in series to form a lead-acid battery with a nominal 12V, 24V, 36V, 48V and the like.

The existing lead-acid battery is important in detecting air tightness in the production process, and once the air tightness is insufficient, the electric leakage is easy and the environment is polluted because of the corrosive substances contained in the lead-acid battery.

Patent document No. cn201920556021.x discloses a device for detecting airtightness of a battery jar, the top surface of the battery jar is open, and an inner cavity is divided into a plurality of single lattices by a partition plate, the device includes a detection table for placing the battery jar, and a cover plate arranged above the detection table and used for sealing the opening on the top surface of the battery jar during detection, and a detection channel for introducing detection gas into each single lattice of the battery jar is arranged in the cover plate.

However, the inventors found that, in the use of the detection device, the positive pressure air blowing method is adopted, and the pole group filled in the battery jar easily blocks the damaged part of the battery jar, so that the leakage of the battery jar cannot be detected.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention provides a battery case leakage detection mechanism, which detects the sealing performance by comparing the pressure or the time for air extraction after the gas in the battery case filled with the electrode group is sucked out from the gap between the electrode groups by performing negative pressure detection on the storage space in the battery case, thereby solving the problem in the background art that the filled electrode group in the battery case easily blocks the damaged portion of the battery case, thereby preventing the leakage from being detected.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a battery case leakage detection mechanism, a plurality of storage spaces are separated into by the baffle in the battery case, and every storage space's top sets up the through-hole, a serial communication port, include:

and the sealing detection assembly is arranged above the storage battery shell and performs negative pressure test on the storage space corresponding to the through hole through one or more through holes.

As an improvement, the method further comprises the following steps: and the negative pressure generator is communicated with the sealing detection assembly to perform negative pressure suction.

As an improvement, the seal detection assembly comprises a seal plate, the seal plate is matched with the top surface of the storage battery shell, an air outlet is formed in one side of the seal plate, seal platforms are arranged on the bottom surface of the seal plate in a one-to-one correspondence mode, the seal platforms are in sealed butt joint with the through holes to prevent air leakage, and each seal platform is internally provided with an air channel communicated with the air outlet.

As an improvement, the seal detection assembly further comprises an air path selection unit, wherein the air path selection unit is arranged above the sealing plate and controls the on-off of the air path.

As an improvement, the gas path selection unit selects different gas paths as a group to be simultaneously switched on or switched off.

As an improvement, the air path selection unit comprises a seal plug and a selection roller; the sealing plugs are arranged on the air paths in a one-to-one correspondence manner, and the up-and-down displacement of the sealing plugs controls the on-and-off of the corresponding air paths; the selection roller is arranged above the seal plug and used for controlling the seal plug to move upwards or downwards.

As an improvement, the sealing plug is elastically connected with the sealing plate through a spring, a pit corresponding to the sealing plug is arranged on the selection roller, the sealing plug bounces to enable the air path to be communicated when facing the pit, otherwise, the air path is cut off by pressing down.

As a refinement, the dimples are freely combined in the length direction of the selector roller.

As an improvement, the air path selection units are arranged in a plurality of groups side by side, and the selection rollers in different groups drive the plugs in the respective groups to control the on-off of the air paths.

The utility model has the beneficial effects that:

(1) according to the utility model, through negative pressure detection of the storage space in the storage battery shell, the gas in the storage battery shell filled with the electrode group is sucked out from the gaps of the electrode group and then the tightness is detected by comparing the pressure intensity or the air suction time, so that the problem that the conventional positive pressure detection cannot detect leakage because the filled electrode group is easy to block the damaged part of the battery jar is solved, and the detection accuracy is greatly improved;

(2) according to the utility model, the storage space is pumped out, so that the separator paper or the polar plate which blocks the damaged part of the storage battery shell is separated from the damaged part, air is pumped out, the damage is judged by analysis and comparison, and meanwhile, the dust-like impurities in the storage space can be taken away in the pumping-out process, so that the finished battery product is better;

(3) the utility model carries out air exhaust detection by arranging the air path selection unit to freely and combinatively select the air paths to be detected according to requirements, is convenient and quick, and has simple structure.

In conclusion, the utility model has the advantages of high accuracy, convenience, rapidness, simple structure, improvement of battery quality and the like, and is particularly suitable for the technical field of storage battery production equipment.

Drawings

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

FIG. 2 is a schematic overall structure diagram according to a first embodiment of the present invention;

FIG. 3 is a partial rearview axis schematic view of the present invention;

FIG. 4 is a schematic structural diagram of the gas path selecting unit according to the present invention;

FIG. 5 is a schematic drawing showing a cross-sectional view of the evacuation of the present invention;

FIG. 6 is a schematic view of the plug and gas circuit of the present invention;

fig. 7 is a schematic view illustrating an air path distribution structure in the sealing plate according to the first embodiment of the present invention;

FIG. 8 is a schematic view of an air passage according to a first embodiment of the present invention;

FIG. 9 is a second schematic diagram of the air passage according to the first embodiment of the present invention;

FIG. 10 is a schematic structural diagram according to a second embodiment of the present invention;

fig. 11 is a schematic view illustrating an air path distribution structure in the sealing plate according to the second embodiment of the present invention;

FIG. 12 is a second schematic sectional view of the present invention;

FIG. 13 is a schematic view of an air passage according to a second embodiment of the present invention;

fig. 14 is a second schematic diagram of the air passage according to the second embodiment of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1:

as shown in fig. 1 to 3, a battery case leakage detection mechanism, in which a battery case 1 is partitioned into a plurality of storage spaces 11 by partitions, and a through hole 112 is formed at the top of each storage space 11, includes:

and the sealing detection assembly 2 is arranged above the storage battery shell 1, and negative pressure test is carried out on the storage space 11 corresponding to the through hole 112 through one or more through holes 112.

It should be noted that, the sealing detection assembly 2 performs negative pressure air extraction on the storage space 11, if the damaged opening of the storage battery shell 1 is blocked by the electrode group, the blocked damaged opening can enter air from the outside through internal air extraction, and the air is detected by the sealing detection assembly 2, so as to remove the defective storage battery in time.

It should be noted that, by performing the air extraction detection on a single storage space 11, the sealing degree of each surface of the storage space 11 can be detected, and the damage at the position can be judged in time;

the plurality of storage spaces 11 are simultaneously evacuated, and the sealing property of the entire case of the battery case 1 can be detected to determine whether or not the case is damaged or leaked.

Further, the vacuum suction device further comprises a negative pressure generator 3, and the negative pressure generator 3 is communicated with the sealing detection assembly 2 to suck negative pressure.

As shown in fig. 7, further, the seal detection assembly 2 includes a sealing plate 21, the sealing plate 21 is matched with the top surface of the battery case 1, an air outlet 210 is formed in one side of the sealing plate 21, sealing platforms 211 are disposed on the bottom surface of the sealing plate 21 in one-to-one correspondence to the through holes 112, the sealing platforms 211 are in sealed butt joint with the through holes 112 to prevent air leakage, and an air passage 212 communicating with the air outlet 210 is disposed in each sealing platform 211.

It should be noted that the sealing detection assembly 2 further includes an active cylinder for lifting the sealing plate 21 and an electric control element (not shown in the figure) for measuring and reading a pressure value, after the active cylinder lowers the sealing plate 21 to contact and seal with the battery case 1, the negative pressure generator 3 is started to pump air, and the electric control element compares the time required for pumping air with the standard time and displays a prompt of whether the vacuum degree is compared with a set value to indicate leakage.

Further, the sealing detection assembly 2 further includes an air path selection unit 22, and the air path selection unit 22 is disposed above the sealing plate 21 and controls the on/off of the air path 212.

Further, the air path selecting unit 22 selects different air paths 212 to be turned on or off simultaneously for a group.

As shown in fig. 4, 5 and 6, further, the air path selecting unit 22 includes a blocking plug 221 and a selecting roller 222; the plugging plugs 221 are correspondingly arranged on the air paths 212 one by one, and the up-and-down displacement of the plugging plugs 221 controls the on-and-off of the corresponding air paths 212; the selector roller 222 is disposed above the plug 221 for controlling the plug 221 to move up or down.

Specifically, the air path selecting unit 22 further includes a stepping motor 223 and a gear transmission set 224, the stepping motor 223 rotates in an equal angle step, and the gear transmission set 224 transmits the selection roller 222 to rotate to control the movement of the blocking plug 221.

Further, the seal plug 221 and the seal plate 21 are elastically connected by a spring 225, the selector roller 222 is provided with a concave pit 2221 corresponding to the seal plug 221, the seal plug 221 is sprung to conduct the air passage 212 when facing the concave pit 2221, otherwise, the air passage 212 is cut off by pressing down.

As shown in fig. 8 and 9, the dimples 2221 are further freely combined in the longitudinal direction of the selector roller 222.

It should be noted that, the two-in-one detection method is advantageous for detecting whether or not the partition between the adjacent storage spaces 11 is damaged or leaked, and has good detection accuracy, and the through holes 112 with intervals corresponding to the interval shaped dimples 2221 may be provided to perform decimation, for example, in the storage battery with 1 × 6, the air passage 212 with

numbers

1, 3, and 5 is opened, and the storage space 11 corresponding to it is in a negative pressure state, and for example, the partition between the storage space 11 corresponding to the storage space number 2/4/6 and the storage space 11 corresponding to the storage space number 1/3/5 is leaked, and can be detected.

Example 2:

as shown in fig. 10 to 14, in which the same or corresponding components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, only the differences from the first embodiment will be described below for the sake of convenience: the second embodiment is different from the first embodiment in that:

in this embodiment, the air path selecting units 22 are arranged in multiple groups side by side, and the selecting rollers 222 in different groups drive the blocking plugs 221 in the respective groups to control the on/off of the air paths 212.

In the case of a storage battery having two or more rows of storage spaces 11, detection is performed by providing the corresponding gas passage selection unit 22, and in the case of a 2X 3-type storage battery, the gas passage selection unit 22 is provided in two rows, and the plugs 221 in different rows are detected by controlling the opening and closing of the gas passages 212, preferably by a suction method with a staggered interval.

The working process is as follows:

the storage battery shell is placed below the sealing detection assembly 2 to be fixed, the sealing plate 21 descends to enable the sealing platform 211 to be buckled and sealed with the through hole 112 of the storage battery shell 1, then the negative pressure generator 3 is started to conduct negative pressure adsorption, and the air path selection unit 22 controls the on-off of the air path 212 to achieve negative pressure air extraction detection on the required storage space 11.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a battery case leakage detection mechanism, separates into a plurality of storage spaces (11) by the baffle in battery case (1), and the top of every storage space (11) sets up through-hole (112), its characterized in that includes:

the sealing detection assembly (2) is arranged above the storage battery shell (1), and negative pressure test is carried out on the storage space (11) corresponding to the through hole (112) through the through hole (112) or the through holes (112).

2. The battery case leakage detection mechanism according to claim 1, further comprising:

and the negative pressure generator (3), and the negative pressure generator (3) is communicated with the sealing detection assembly (2) to perform negative pressure air suction.

3. A battery case leakage detection mechanism according to claim 1, wherein said seal detection assembly (2) comprises:

a sealing plate (21), wherein the sealing plate (21) is matched with the top surface of the storage battery shell (1), one side of the sealing plate (21) is provided with an air outlet (210),

the one-to-one correspondence on shrouding (21) bottom surface through-hole (112) are provided with sealed platform (211), sealed butt joint of sealed platform (211) through-hole (112) prevent gas leakage, every be equipped with the intercommunication in sealed platform (211) gas circuit (212) of gas outlet (210).

4. A battery case leak detection mechanism according to claim 3, wherein the seal detection assembly (2) further comprises:

a gas path selection unit (22),

the air path selection unit (22) is arranged above the sealing plate (21) and controls the on-off of the air path (212).

5. The battery case leakage detection mechanism according to claim 4, wherein the air path selection unit (22) selects different air paths (212) to be simultaneously opened or closed for a group.

6. The battery case leakage detecting mechanism according to claim 4, wherein the gas path selecting unit (22) includes:

a seal plug (221); and

a selector roller (222);

the sealing plugs (221) are correspondingly arranged on the air paths (212) one by one, and the up-and-down displacement of the sealing plugs (221) controls the on-and-off of the corresponding air paths (212);

the selection roller (222) is arranged above the seal plug (221) and used for controlling the seal plug (221) to move upwards or downwards.

7. The battery case leakage detecting mechanism according to claim 6, wherein the sealing plug (221) and the sealing plate (21) are elastically connected by a spring (225),

a concave pit (2221) corresponding to the seal plug (221) is arranged on the selection roller (222),

when the sealing plug (221) is opposite to the pit (2221), the sealing plug bounces to enable the air path (212) to be conducted, otherwise, the sealing plug is pressed downwards to cut off the air path (212).

8. The battery case leakage detecting mechanism according to claim 7, wherein the dimples (2221) are freely combined in the longitudinal direction of the selector roller (222).

9. The battery case leakage detection mechanism according to claim 6, wherein the air path selection units (22) are arranged in a plurality of groups side by side, and the selection rollers (222) in different groups drive the plugs (221) in the respective groups to control the on-off of the air paths (212).