Alkaline battery sealing ring bursting pressure testing device and testing method

Abstract

The invention discloses an alkaline battery sealing ring bursting pressure testing device and a testing method, the alkaline battery sealing ring bursting pressure testing device comprises a box body, a box cover, a plurality of battery mounting parts and a plurality of batteries to be tested, the battery mounting parts are arranged in the box body, the box cover sleeves the opening end face of the box body, the inner side face of the box cover protrudes to form a sealing part, and the battery mounting parts are arranged in the box body. The sealing part is inserted into the opening of the box body and presses the plurality of battery mounting pieces, and the plurality of to-be-tested batteries are mounted in the battery mounting pieces and are pressed through the battery mounting pieces. The device is simple in structure, the to-be-tested battery does not need to be perforated, the outer ring of the to-be-tested battery can be clamped through the clamping channel, so that the internal pressure generated subsequently can only axially act on the two ends of the to-be-tested battery, gas in the box body can be extracted, the box body is in a negative pressure state, and if a battery sealing ring has defects, the battery sealing ring can not be damaged. The internal air pressure of the to-be-tested battery is higher than the external air pressure, so that air leaks from the sealing rings at the two ends.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alkaline battery testing, in particular to an alkaline battery sealing ring burst pressure testing device and testing method. BACKGROUND

[0002] In an alkaline battery, the sealing ring is a combination of the sealing mechanism and the explosion-proof mechanism of the entire system. With the development of alkaline batteries, the overall structure of the sealing ring of the alkaline battery has also become mature, but after the production of the alkaline battery is completed, it still needs to be tested;

[0003] At present, the testing of alkaline batteries generally needs to drill a small hole (about 1-2 mm in diameter) near the battery shell (usually the negative electrode or the explosion-proof valve), penetrate the shell but avoid damaging the internal structure, inject inert gas (such as nitrogen) at a constant rate through a gas pressure pump (such as a nitrogen cylinder + pressure reducing valve), and at the same time monitor the internal pressure with a pressure sensor to achieve the purpose of testing, but such testing will cause damage to the alkaline battery, which will easily cause the leakage of the internal solution and affect the outside, and the testing is more troublesome, requiring individual perforation operation, which affects the testing efficiency. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an alkaline battery sealing ring burst pressure testing device and testing method, which can quickly clamp multiple batteries to be tested and load them into a box for negative pressure testing to solve the problems raised in the background.

[0005] The present application is realized by the following technical scheme: an alkaline battery sealing ring burst pressure testing device, comprising a box, a box cover, a plurality of battery mounting pieces and a plurality of batteries to be tested, the two sides of the box are protruded to form thickened parts, the two sides inside the box are provided with first grooves, the first grooves extend into the thickened parts, the plurality of battery mounting pieces are arranged inside the box, the box cover is sleeved on the opening end surface of the box and covers the first grooves at the same time, the inner side surface of the box cover is protruded to form a sealing part, the sealing part is inserted into the opening of the box and tightly presses the plurality of battery mounting pieces, the two sides of the sealing part are protruded to form extension parts, the extension parts are inserted into the first grooves, the plurality of batteries to be tested are mounted inside the battery mounting pieces and are tightly arranged by the battery mounting pieces, the two side surfaces inside the box are embeddedly mounted with conductive sheets in contact with the batteries to be tested.

[0006] As a preferred technical scheme, the battery mounting piece comprises an upper plate and a lower plate, a plurality of arc-shaped grooves are arranged on opposite surfaces of the upper plate and the lower plate, adjacent arc-shaped grooves are combined to form a clamping channel matching the diameter of the battery to be tested, the battery to be tested is arranged in the clamping channel and clamped by the upper plate and the lower plate, the battery to be tested in each clamping channel is arranged in contact with the tail, and the battery to be tested on both sides of the lower plate in the length direction is arranged in contact with the conductive sheet.

[0007] As a preferred technical scheme, the four corners of the lower plate are vertically provided with support columns, the lowermost support column is arranged in abutment with the inner wall surface of the box, the four corners of the upper plate are recessed to form insertion grooves matching the diameters of the support columns, and the remaining support columns are inserted into the corresponding insertion grooves.

[0008] As a preferred technical scheme, the side of the upper plate facing the lower plate is provided with a plurality of positioning columns, the side of the lower plate facing the upper plate is provided with a plurality of positioning holes, and the positioning columns are inserted into the corresponding positioning holes.

[0009] As a preferred technical scheme, the two sides of the upper plate and the lower plate are recessed to form second recesses, and the second recesses are arranged opposite the first recesses.

[0010] As a preferred technical scheme, the outer side surface of the sealing part and the extension part is provided with an annular groove, a sealing ring is arranged in the annular groove, and the outer ring surface of the sealing ring is arranged in abutment with the inner wall surface of the box.

[0011] As a preferred technical scheme, a suction pipe communicating with the box is vertically arranged on the top surface of the box, a vacuum valve is arranged on the suction pipe, and a pressure gauge communicating with the inside of the box is arranged on the thickened part on one side.

[0012] As a preferred technical scheme, the four corners of the box cover are provided with first screw holes, the open end surface of the box is provided with a plurality of second screw holes, the first screw holes and the second screw holes are arranged opposite to each other and are threadedly connected with bolts.

[0013] As a preferred technical scheme, one end of the conductive sheet is bent and extends through the box to the outside to form a wiring part.

[0014] The alkaline battery sealing ring burst pressure test method comprises the following specific steps:

[0015] S1, the battery to be tested is arranged in the arc-shaped groove of the lower plate, and after the upper plate is arranged on the cover, the battery to be tested is pressed and positioned;

[0016] S2, the battery mounting piece on which the battery to be tested is arranged is arranged in the box, the battery mounting pieces are arranged in air by the support rods, and after the box cover is closed, the battery mounting pieces are arranged in abutment by the sealing part;

[0017] S3, with the battery mounting member mounted in place, the battery to be tested can be in contact with the conductive sheet, and then the battery to be tested is in a powered state;

[0018] S4, in the powered state, the box can be pumped to make the box in a negative pressure state, if the battery sealing ring has defects, the internal pressure of the battery to be tested will be higher than the external pressure, causing gas to leak from the inside to the outside.

[0019] The beneficial effects of the present application are: the present application has simple structure, no need to perforate the battery to be tested, increases the safety, the battery to be tested can be directly put into the arc-shaped groove of the lower plate, and is pressed and set through the upper plate, the outer circle of the battery to be tested can be clamped through the clamping channel, so that the subsequent internal pressure can only act axially on the two ends of the battery to be tested, and with the fixing of the box cover, the gas in the box can be pumped out, so that the box is in a negative pressure state, if the battery sealing ring has defects, the internal pressure of the battery to be tested will be higher than the external pressure, causing gas to leak from the two sealing rings, and the test process is in a powered state, increasing the authenticity. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the present application after removing the box cover;

[0023] Figure 3 It is a schematic diagram of the structure of the present application after further removing the sealing part;

[0024] Figure 4 It is a schematic diagram of the structure of the present application after removing the box;

[0025] Figure 5 It is a schematic diagram of the installation structure of the battery to be tested of the present application;

[0026] Figure 6 It is a schematic diagram of the structure of the lower plate of the present application.

[0027] Wherein, 1, box body; 2, thickening part; 3, box cover; 4, exhaust pipe; 5, vacuum valve; 6, pressure gauge; 7, wiring part; 8, sealing part; 9, extension part; 10, first groove; 11, second groove; 12, upper plate; 13, air vent; 14, sealing ring; 15, lower plate; 16, conductive sheet; 17, battery to be tested; 18, support column; 19, positioning hole. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below with reference to the drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explaining the present application, and should not be construed as limiting the present application.

[0029] All features disclosed in this specification, and / or all steps of any methods or processes disclosed, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0030] Any feature disclosed in this specification, unless stated otherwise, can be replaced by alternative features or equivalents having the same or a similar effect. That is, unless stated otherwise, each feature is one example only of a number of alternative or equivalent features that could be substituted for that feature.

[0031] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 indicated, the alkali battery sealing ring burst pressure testing device of the present application comprises a box body 1, a box cover 3, a plurality of battery mounting members and a plurality of batteries to be tested 17, the two sides of the box body 1 are protruded to form thickening parts 2, the two sides of the inside of the box body 1 are provided with first grooves 10, the first grooves 10 extend into the thickening parts 2, the plurality of battery mounting members are all arranged in the inside of the box body 1, the box cover 3 is sleeved on the opening end face of the box body 1 and covers the first grooves 10 at the same time, the inner side face of the box cover 3 is protruded to form sealing parts 8, the sealing parts 8 are inserted into the opening of the box body 1 and tightly arranged with the plurality of battery mounting members, the two sides of the sealing parts 8 are protruded to form extension parts 9, the extension parts 9 are all inserted into the first grooves 10, the plurality of batteries to be tested 17 are arranged in the inside of the battery mounting members and tightly arranged through the battery mounting members, the two side faces of the inside of the box body 1 are both embeddedly arranged with conductive sheets 16 in contact with the batteries to be tested 17 at the positions opposite to the battery mounting members.

[0032] In the embodiment, the battery mounting member comprises the upper plate 12 and the lower plate 15, and a plurality of arc-shaped grooves are arranged on the opposite surfaces of the upper plate 12 and the lower plate 15. Adjacent arc-shaped grooves are combined to form clamping channels matching the diameters of the batteries 17 to be tested. The batteries 17 to be tested are arranged in the clamping channels and clamped by the upper plate 12 and the lower plate 15. The batteries 17 to be tested in each clamping channel are arranged in contact with each other, and the batteries 17 to be tested on both sides of the lower plate 15 in the length direction are arranged in contact with the conductive sheets 16.

[0033] The inner walls of the arc-shaped grooves are provided with a plurality of air vents communicating with the outside, so that the clamping channels can communicate with the inner cavity of the box.

[0034] In the embodiment, the four corners of the lower plate 15 are vertically provided with support columns 18. The lowermost support column 18 is arranged in contact with the inner wall of the box 1. The four corners of the upper plate 12 are recessed to form insertion grooves matching the diameters of the support columns 18. The remaining support columns 18 are inserted into the corresponding insertion grooves.

[0035] In the embodiment, the side of the upper plate 12 facing the lower plate 15 is provided with a plurality of positioning columns, and the side of the lower plate 15 facing the upper plate is provided with a plurality of positioning holes 19. The positioning columns are inserted into the corresponding positioning holes 19. The insertion between the positioning holes and the positioning columns can ensure the flush effect between the upper plate and the lower plate, avoiding misalignment.

[0036] In the embodiment, the two sides of the upper plate 12 and the lower plate 15 are recessed to form second recesses 11, which are arranged opposite to the first recesses 10.

[0037] When the battery mounting member is put in or taken out, the hand can be inserted into the first recess and the second recess, so that the battery mounting member can be placed in place or taken out upward.

[0038] In the embodiment, the outer side of the sealing part 8 and the extension part 9 is provided with an annular groove, and a sealing ring 14 is arranged in the annular groove. The outer ring surface of the sealing ring 14 is arranged in contact with the inner wall of the box 1.

[0039] The sealing ring increases the sealing between the sealing part and the box, which can ensure the sealing between the box and the box cover.

[0040] In the embodiment, the top surface of the box 1 is vertically provided with a suction pipe 4 communicating with the box 1. The suction pipe 4 is provided with a vacuum valve 5. The thickened part 2 on one side is provided with a pressure gauge 6 communicating with the inside of the box 1. The pressure gauge can understand the degree of negative pressure in the box. Once the battery to be tested leaks, the gas in the battery to be tested will be exposed, which will cause the fluctuation of the value on the pressure gauge, so as to understand whether the battery to be tested leaks.

[0041] In this embodiment, first screw holes are provided on the four corners of the box cover 3, and multiple second screw holes are provided on the open end surface of the box body 1. The first screw holes and the second screw holes are arranged opposite to each other and are threadedly connected with bolts. The box cover can be fixed to the box body by the bolts to ensure the stability of the box cover after installation.

[0042] In this embodiment, one end of the conductive sheet 16 is bent and extends through the box body 1 to the outside to form a wiring portion 7 .

[0043] Alkaline battery seal ring burst pressure test method, the specific steps are as follows:

[0044] S1. Install the battery 17 to be tested into the arc-shaped groove of the lower plate 15 from the outside. After covering the upper plate 12, its positioning post can be inserted into the positioning hole of the lower plate. The battery mounting piece is placed into the box along with the battery mounting piece. The length and width of the battery mounting piece match the length and width of the box cavity, thereby ensuring stability after installation.

[0045] S2. The battery mounting assembly for the battery to be tested 17 can be placed into the box 1. The support rods can be used to bridge the gap between the battery mounting assemblies. After the box cover 3 is closed, the sealing portion 8 can be used to press the battery mounting assemblies together.

[0046] S3. With the battery mounting member installed in place, the battery to be tested 17 can contact the conductive sheet 16. After the connection portion is connected to the external device, the battery to be tested 17 is in a power supply state.

[0047] S4. While power is supplied, a negative pressure pump can be prepared. A pipe is installed on the suction end of the negative pressure pump, and the other end of the pipe is connected to the exhaust pipe. After the vacuum valve is opened, the box 1 can be evacuated to put the box 1 in a negative pressure state. If there is a defect in the battery sealing ring, the internal pressure of the battery to be tested 17 will be higher than the external pressure, causing gas to leak out from the inside of the battery;

[0048] The outer ring of the battery to be tested can be clamped through the clamping channel, so that the internal pressure generated subsequently can only act axially on the two ends of the battery to be tested, thereby better testing the sealing rings at both ends.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. Alkaline battery seal ring bursting pressure test device, characterized by: The invention comprises a box body (1), a box cover (3), a plurality of battery mounting parts and a plurality of batteries to be tested (17), wherein both sides of the box body (1) are protruded to form a thickened portion (2), a first groove (10) is provided on both sides of the interior of the box body (1), and the first groove (10) extends into the thickened portion (2), and the plurality of battery mounting parts are all arranged inside the box body (1), the box cover (3) is sleeved on the open end surface of the box body (1), and the first groove (10) is also synchronously covered and arranged, and the inner side surface of the box cover (3) is protruded. A sealing portion (8) is formed, the sealing portion (8) is inserted into the opening of the box body (1), and a plurality of battery mounting members are pressed and arranged, both sides of the sealing portion (8) protrude to form extension portions (9), and the extension portions (9) are inserted into the first groove (10), a plurality of batteries (17) to be tested are installed inside the battery mounting member, and are pressed and arranged by the battery mounting member, and conductive sheets (16) in contact with the batteries (17) to be tested are embedded and installed on both side surfaces of the box body (1) facing the battery mounting member.

2. The alkaline battery seal ring bursting pressure test device according to claim 1, characterized in that: The battery mounting parts each include an upper plate (12) and a lower plate (15). A plurality of arcuate grooves are provided on opposing surfaces of the upper plate (12) and the lower plate (15). Adjacent arcuate grooves are combined to form a clamping channel that matches the diameter of a battery to be tested (17). The battery to be tested (17) is arranged in the clamping channel and is clamped by the upper plate (12) and the lower plate (15). The battery to be tested (17) in each clamping channel is arranged in end-to-end contact, and the battery to be tested (17) located on both sides of the lower plate (15) in the length direction is arranged in contact with the conductive sheet (16).

3. The alkaline battery seal ring bursting pressure test device according to claim 2, characterized in that: Support columns (18) are vertically installed on the four corners of the lower plate (15), and the lowest support column (18) is set in contact with the inner wall surface of the box body (1). The four corners of the upper plate (12) are recessed to form slots that match the diameter of the support columns (18), and the remaining support columns (18) are inserted into the corresponding slots.

4. The alkaline battery seal ring bursting pressure test device according to claim 3, characterized in that: A plurality of positioning columns are installed on one side of the upper plate (12) facing the lower plate (15), and a plurality of positioning holes (19) are provided on one side of the lower plate (15) facing the working side. The positioning columns are inserted into the corresponding positioning holes (19).

5. The alkaline battery seal ring bursting pressure test device according to claim 4, characterized in that: Both sides of the upper plate (12) and the lower plate (15) are recessed to form a second groove (11), and the second groove (11) is arranged opposite to the first groove (10).

6. The alkaline battery seal ring bursting pressure test device according to claim 1, characterized in that: An annular groove is provided on the outer side surfaces of the sealing portion (8) and the extension portion (9), a sealing ring (14) is installed in the annular groove, and the outer ring surface of the sealing ring (14) is arranged to contact the inner wall surface of the box body (1).

7. The alkaline battery seal ring bursting pressure test device according to claim 1, characterized in that: An air extraction pipe (4) communicating with the box body (1) is vertically mounted on the top surface of the box body (1), a vacuum valve (5) is mounted on the air extraction pipe (4), and a pressure gauge (6) communicating with the interior of the box body (1) is mounted on the thickened portion (2) on one side.

8. The alkaline battery seal ring bursting pressure test device according to claim 1, characterized in that: The four corners of the box cover (3) are provided with first screw holes, and the open end surface of the box body (1) is provided with a plurality of second screw holes. The first screw holes and the second screw holes are arranged opposite to each other and are threadedly connected with bolts.

9. The alkaline battery seal ring bursting pressure test device according to claim 1, characterized in that: One end of the conductive sheet (16) is bent and extends through the box body (1) to the outside to form a wiring portion (7).

10. Alkaline battery seal ring burst pressure test method, characterized by: The specific steps are as follows: S1. Insert the battery to be tested (17) into the arc groove of the lower plate (15) from the outside, and after covering the upper plate (12), press the battery to be tested (17) into position; S2, a battery mounting assembly for mounting a battery to be tested (17) can be placed in the box body (1), the battery mounting assembly can be suspended between the support rods, and after the box cover (3) is closed, the battery mounting assembly can be pressed and set by the sealing portion (8); S3. With the battery mounting member installed in place, the battery to be tested (17) can contact the conductive sheet (16), thereby putting the battery to be tested (17) in a power supply state; S4. When the power is supplied, the box (1) can be evacuated to place the box (1) in a negative pressure state. If there is a defect in the battery sealing ring, the internal pressure of the battery to be tested (17) will be higher than the external pressure, causing gas to leak from the inside of the battery to the outside.

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