Cover plate assembly of magnetic particle flaw detector battery and battery

Abstract

The utility model discloses a cover plate assembly of a magnetic particle flaw detector battery, which comprises a cover plate main body, an anti-explosion valve is arranged in the middle of the cover plate main body, electrode fixing seats positioned on two sides of the anti-explosion valve are fixedly mounted on the cover plate main body in a sealing manner, and electrode blocks are fixedly mounted in the electrode fixing seats. An insulating sealing piece located at the bottom of the electrode fixing base is fixedly installed at the bottom of the cover plate body in a sealed mode, and the bottom of the electrode block and the middle of the insulating sealing piece are installed in a penetrating and sealing mode. By arranging the insulating sealing piece and the electrode fixing seat, the electrode fixing seat protruding out of the cover plate can fix the electrode block in the electrode fixing seat, and the insulating sealing piece arranged below the electrode fixing seat can seal electrolyte in the battery to prevent the electrolyte from leaking, so that complete separation between the electrode block and the cover plate main body can be realized; the insulation performance and the safety performance of the battery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cover plate assembly of a battery of a magnetic particle flaw detector and a battery. Background Art

[0002] Magnetic particle testing utilizes the fact that after ferromagnetic materials are magnetized, the presence of discontinuities causes local distortion of the magnetic lines of force on the workpiece surface and near the surface, generating a leakage magnetic field (i.e. the magnetic field formed when the magnetic induction lines leave and enter the surface) that adsorbs the magnetic powder applied to the workpiece surface, forming magnetic marks that are visible under appropriate lighting, thereby showing the location, shape and size of the discontinuity.

[0003] The portable magnetic particle flaw detector needs to be powered by a high-power battery when in use. However, there is an air gap between the tab connector and the cover in the existing battery cover assembly. After filling with electrolyte, there may be a certain degree of conduction. Although it will not cause a direct short circuit, it may cause the impedance between the tab connector and the cover to decrease, and the reliability of the battery is low.

[0004] To this end, we propose a cover plate assembly and a battery for a magnetic particle flaw detector battery. Utility Model Content

[0005] The utility model aims to provide a cover plate assembly of a battery of a magnetic particle flaw detector and a battery, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cover plate assembly and a battery for a magnetic particle flaw detector battery, comprising a cover plate body, an explosion-proof valve is arranged in the middle of the cover plate body, the cover plate body is sealed and fixedly installed with electrode fixing seats located on both sides of the explosion-proof valve, an electrode block is fixedly installed inside the electrode fixing seat, the bottom of the cover plate body is sealed and fixedly installed with an insulating sealing sheet located at the bottom of the electrode fixing seat, and the bottom of the electrode block and the middle of the absolute cloud sealing sheet are penetrated and sealed.

[0007] Optionally, a connecting groove is provided at the bottom of the cover plate body, a first sealing ring is provided at the bottom inside the connecting groove, and a second sealing ring is provided on the side surface of the connecting groove close to the inner side.

[0008] Optionally, a fixing protrusion located on the inner side of the connecting groove is integrally connected to the bottom of the cover plate body, and the outer side of the fixing protrusion is flush with the inner side of the connecting groove.

[0009] Optionally, the explosion-proof valve includes a shell that is sealed and fixedly installed with the cover plate body, an upper metal sheet is welded to the top of the shell, a lower metal sheet is welded to the bottom of the shell, and scoring lines are provided on the opposite surfaces of the upper metal sheet and the lower metal sheet.

[0010] Optionally, a buffer partition is provided in the middle of the interior of the shell and is located between the upper metal sheet and the lower metal sheet, and a plurality of small through holes are opened in the middle of the buffer partition.

[0011] Optionally, the shell is shaped like two stacked cylinders, the diameter of the upper half of the shell is smaller than the diameter of the lower half, and the top and the bottom of the shell are flush with the upper and lower surfaces of the cover body respectively.

[0012] Optionally, the thickness of the upper metal sheet is the same as that of the lower metal sheet, and the depth of the scoring lines arranged on the upper metal sheet and the lower metal sheet is the same.

[0013] A magnetic particle flaw detector battery, the battery comprising a cover plate assembly of a magnetic particle flaw detector battery as described in any one of the above items.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The cover plate assembly and the battery of the magnetic particle flaw detector battery are provided with an insulating sealing sheet and an electrode fixing seat. The electrode fixing seat protruding from the cover plate can fix the electrode block inside it, and the insulating sealing sheet arranged under the electrode fixing seat can seal the electrolyte inside the battery to prevent leakage of the electrolyte, thereby achieving complete isolation between the electrode block and the cover plate body, improving the insulation performance of the battery, and improving the safety performance of the battery.

[0016] The cover plate assembly and battery of the magnetic particle flaw detector battery are provided with an explosion-proof valve. When the internal pressure of the battery increases due to thermal runaway, the gas first squeezes the lower metal sheet, causing the lower metal sheet to crack from the score line. Then, after the gas passes through the buffer holes on the buffer partition, it squeezes the upper metal sheet again, causing the upper metal sheet to crack from the score line and is buffered by the through holes, thereby achieving the purpose of pressure relief and ensuring the safety of consumers' lives and property during battery use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a cover plate assembly and a battery of a magnetic particle flaw detector battery of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of a cover plate assembly and a battery of a magnetic particle flaw detector battery of the utility model;

[0019] Figure 3 It is a cross-sectional view of a cover plate assembly of a battery of a magnetic particle flaw detector and a cover plate body of the battery of the utility model;

[0020] Figure 4 The utility model is a structural schematic diagram of a cover plate assembly of a battery of a magnetic particle flaw detector and an explosion-proof valve of the battery.

[0021] In the figure: 1. cover plate body; 2. electrode fixing seat; 3. explosion-proof valve; 31. shell; 32. upper metal sheet; 33. buffer partition; 34. lower metal sheet; 35. score line; 36. through hole; 4. electrode block; 5. insulating sealing sheet; 6. connecting groove; 7. second sealing ring; 8. fixing protrusion; 9. first sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in 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 in 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.

[0023] See also Figures 1 to 4 The utility model provides a cover plate assembly and a battery of a magnetic particle flaw detector battery, comprising a cover plate body 1, an explosion-proof valve 3 is arranged in the middle of the cover plate body 1, the cover plate body 1 is sealed and fixedly installed with electrode fixing seats 2 located on both sides of the explosion-proof valve 3, an electrode block 4 is fixedly installed inside the electrode fixing seat 2, and an insulating sealing sheet 5 located at the bottom of the electrode fixing seat 2 is sealed and fixedly installed at the bottom of the cover plate body 1, the bottom of the electrode block 4 and the middle of the anti-cloud sealing sheet are penetrated and sealed, by arranging the insulating sealing sheet 5 and the electrode fixing seat 2, the electrode fixing seat 2 protruding from the cover plate can fix the electrode block 4 inside it, and the insulating sealing sheet 5 arranged below the electrode fixing seat 2 can seal the electrolyte inside the battery to prevent leakage of the electrolyte, thereby achieving complete isolation between the electrode block 4 and the cover plate body 1, improving the insulation performance of the battery, and improving the safety performance of the battery.

[0024] A connecting groove 6 is provided at the bottom of the cover body 1, a first sealing ring 9 is provided at the bottom inside the connecting groove 6, a second sealing ring 7 is provided on the side of the connecting groove 6 close to the inner side, and a fixing protrusion 8 located on the inner side of the connecting groove 6 is integrally connected to the bottom of the cover body 1, and the outer side of the fixing protrusion 8 is flush with the inner side of the connecting groove 6.

[0025] The explosion-proof valve 3 includes a shell 31 which is sealed and fixedly installed with the cover body 1, an upper metal sheet 32 ​​is welded on the top of the shell 31, a lower metal sheet 34 is welded on the bottom of the shell 31, and a score line 35 is provided on the opposite surfaces of the upper metal sheet 32 ​​and the lower metal sheet 34. A buffer partition 33 located between the upper metal sheet 32 ​​and the lower metal sheet 34 is provided in the middle of the shell 31, and a plurality of small through holes 36 are opened in the middle of the buffer partition 33. The shape of the shell 31 is two stacked cylinders, the diameter of the upper half of the shell 31 is smaller than the diameter of the lower half, and the top and the bottom of the shell 31 are respectively connected to the cover body 1. The upper and lower surfaces are flush, the thickness of the upper metal sheet 32 ​​is the same as that of the lower metal sheet 34, and the depth of the score line 35 set on the upper metal sheet 32 ​​and the lower metal sheet 34 is the same. By setting the explosion-proof valve 3, when the internal pressure of the battery increases due to thermal runaway, the gas first squeezes the lower metal sheet 34, causing the lower metal sheet 34 to crack from the score line 35, and then the gas passes through the buffer hole 36 on the buffer partition 33 for buffering, and then squeezes the upper metal sheet 32 ​​again, causing the upper metal sheet 32 ​​to crack from the score line 35, and is buffered by the through hole 36, thereby achieving the purpose of pressure relief, thereby ensuring the safety of consumers' lives and property during the use of the battery.

[0026] A magnetic particle flaw detector battery, the battery comprising a cover plate assembly of a magnetic particle flaw detector battery as described in any one of the above items.

[0027] Working principle:

[0028] The electrode fixing seat 2 protruding from the cover plate can fix the electrode block 4 inside it, and the insulating sealing sheet 5 arranged under the electrode fixing seat 2 can seal the electrolyte inside the battery to prevent leakage of the electrolyte, thereby achieving complete isolation between the electrode block 4 and the cover plate body 1, improving the insulation performance of the battery, and improving the safety performance of the battery. By setting the explosion-proof valve 3, when the internal pressure of the battery increases due to thermal runaway, the gas first squeezes the lower metal sheet 34, causing the lower metal sheet 34 to crack from the score line 35, and then the gas passes through the buffer hole 36 on the buffer partition 33. After being buffered, it squeezes the upper metal sheet 32 ​​again, causing the upper metal sheet 32 ​​to crack from the score line 35, and is buffered by the through hole 36, thereby achieving the purpose of pressure relief, ensuring the safety of consumers' lives and property during the use of the battery.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cover plate assembly for a battery of a magnetic particle flaw detector, comprising a cover plate body (1), characterized in that: An explosion-proof valve (3) is arranged in the middle of the cover plate body (1); the cover plate body (1) is sealed and fixedly mounted with electrode fixing seats (2) located on both sides of the explosion-proof valve (3); an electrode block (4) is fixedly mounted inside the electrode fixing seat (2); an insulating sealing sheet (5) located at the bottom of the electrode fixing seat (2) is sealed and fixedly mounted at the bottom of the cover plate body (1); and the bottom of the electrode block (4) and the middle of the anti-cloud sealing sheet are penetrated and sealed.

2. The cover plate assembly of a magnetic particle flaw detector battery according to claim 1, characterized in that: A connecting groove (6) is provided at the bottom of the cover plate body (1), a first sealing ring (9) is provided at the bottom of the connecting groove (6), and a second sealing ring (7) is provided on the side surface of the connecting groove (6) close to the inner side.

3. The cover plate assembly of a magnetic particle flaw detector battery according to claim 2, characterized in that: The bottom of the cover plate body (1) is integrally connected with a fixing protrusion (8) located inside the connection groove (6), and the outer side of the fixing protrusion (8) is flush with the inner side of the connection groove (6).

4. The cover plate assembly of a magnetic particle flaw detector battery according to claim 1, characterized in that: The explosion-proof valve (3) comprises a shell (31) which penetrates the cover plate body (1) and is fixedly and sealed therewith; an upper metal sheet (32) is welded to the top of the shell (31); a lower metal sheet (34) is welded to the bottom of the shell (31); and scoring lines (35) are provided on the opposing surfaces of the upper metal sheet (32) and the lower metal sheet (34).

5. The cover plate assembly of a battery of a magnetic particle flaw detector according to claim 4, characterized in that: A buffer partition (33) is provided in the middle of the shell (31) and is located between the upper metal sheet (32) and the lower metal sheet (34). A plurality of small through holes (36) are provided in the middle of the buffer partition (33).

6. The cover plate assembly of a battery of a magnetic particle flaw detector according to claim 5, characterized in that: The outer shell (31) is in the shape of two stacked cylinders, the diameter of the upper half of the outer shell (31) is smaller than the diameter of the lower half, and the top and the bottom of the outer shell (31) are respectively flush with the upper and lower surfaces of the cover plate body (1).

7. The cover plate assembly of a battery of a magnetic particle flaw detector according to claim 4, characterized in that: The upper metal sheet (32) and the lower metal sheet (34) have the same thickness, and the scoring lines (35) provided on the upper metal sheet (32) and the lower metal sheet (34) have the same depth.

8. A battery for a magnetic particle flaw detector, characterized in that: The battery comprises a cover plate assembly of a magnetic particle flaw detector battery according to any one of claims 1 to 7.

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