CN212111074U

CN212111074U - Lead alloy corrosion resistance detects frock

Info

Publication number: CN212111074U
Application number: CN202020999833.4U
Authority: CN
Inventors: 李斌; 孙龙; 汪展; 李国清; 刘长来; 徐建刚; 夏诗忠; 阮佳飞
Original assignee: Yangzhou Apollo Battery Co ltd
Current assignee: Yangzhou Apollo Battery Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-12-08
Anticipated expiration: 2030-06-04

Abstract

A lead alloy corrosion resistance detection tool is characterized in that a test groove body is fixed in a constant-temperature water bath box, the test groove body is divided into a plurality of single lattices by a plurality of partition walls, a partition plate parallel to the partition walls is arranged in each single lattice, and the test groove body is divided into a positive plate grid placing part and a negative plate grid placing part by the partition plates; the groove cover is matched with the test groove body; the positive/negative electrode current collecting bar comprises a U-shaped groove, a plurality of clamping devices which correspond to the single cells of the test groove body one by one are arranged in the U-shaped groove, each clamping device comprises two symmetrical clamping pieces, the upper end parts of the two clamping pieces are fixedly connected with the two side walls of the U-shaped groove, a spring is respectively arranged on the middle lower part and the two side walls of the U-shaped groove, the lower end parts of the two clamping pieces extend to the middle part of the U-shaped groove through the spring respectively and are used for clamping the lug parts of the positive/negative grid, through holes are formed in the positions, corresponding to the adjacent clamping pieces, of the two; one end of the positive/negative current collecting bar is welded with an outgoing line; the accuracy of the detection result is effectively ensured.

Description

Lead alloy corrosion resistance detects frock

Technical Field

The utility model belongs to the technical field of lead acid battery detects, concretely relates to lead alloy corrosion resistance detects frock.

Background

The lead-acid battery is mainly structured by dipping a polar plate in a sulfuric acid solution with a certain density to form an electrode. The polar plate consists of a grid and lead plaster. The lead paste participates in the electrochemical reaction, and determines the capacity of the battery. The grid is made of lead alloy. The grid acts as a support for the lead paste (active material) and current conductor in the plate. The service life of the positive grid in the sulfuric acid solution determines the service life of the battery. The service life of the positive grid is characterized by the corrosion allowance of the positive grid after the lead alloy grid is electrified in a sulfuric acid solution for a certain time.

The existing method for detecting the corrosion allowance of the positive grid comprises the following steps: 1. weighing a negative grid and then encapsulating the negative grid by using a PP (polypropylene) partition plate; 2. alternately stacking the negative grid and the positive grid (after weighing); 3. the positive plate lug and the negative plate lug are respectively cast-welded, and the bus bars on the upper parts of the plate lugs are cast into a cylinder shape, so that the wires can be conveniently connected; 4. putting the pole group into a battery jar filled with 1.29 g/ml sulfuric acid solution; 5. after the positive electrode and the negative electrode are electrified at a constant current of 0.5A for 400 hours, shearing a positive electrode grid, washing off a corrosion layer on the surface of the grid by using a sugar alkali solution, and weighing; 6. and calculating the corrosion allowance of the positive grid.

The above detection method has the following defects:

1. the operation is complicated;

2. open-type electrification is carried out, and acid mist is generated to pollute the environment;

3. the plate lugs are subjected to cast welding, and the plate lugs must be cut off after the electrification detection is finished, so that the calculation of the corrosion allowance of the positive plate grid is influenced;

4. corrosion was detected only for one sulfuric acid density at a time.

Disclosure of Invention

The utility model aims to overcome the above-mentioned not enough of prior art and provide a lead alloy corrosion resistance can detect frock, easy and simple to handle, reduce staff's work load, can effectively guarantee the accuracy of testing result.

The technical solution is as follows: a lead alloy corrosion resistance detection tool comprises a test groove body, a constant-temperature water bath box, a groove cover and a positive/negative electrode collector bar, wherein the test groove body is fixed in the constant-temperature water bath box, the upper end part of the test groove body protrudes out of the constant-temperature water bath box, the test groove body is divided into a plurality of single lattices by a plurality of partition walls, a partition plate parallel to the partition walls is arranged in each single lattice, the test groove body is divided into a positive plate grid placing part and a negative plate grid placing part by the partition plates, and the height of each partition plate is larger than or equal to that of the positive/negative plate grid; the groove cover is matched with the test groove body and covers the test groove body during testing; the positive/negative electrode current collecting bar comprises a U-shaped groove, a plurality of clamping devices which correspond to the cells of the test groove body one by one and are used for fixing the positive/negative grid are arranged in the U-shaped groove, each clamping device comprises two symmetrical clamping pieces, the upper end parts of the two clamping pieces are fixedly connected with two side walls of the U-shaped groove, springs are respectively arranged on the middle lower part and the two side walls of the U-shaped groove, the lower end parts of the two clamping pieces extend to the middle part of the U-shaped groove through the springs respectively and are used for clamping a tab part of the positive/negative grid, the length of the two springs is larger than half of the width of the U-shaped groove in a natural state, through holes are formed in the positions; and one end of the positive/negative current collecting bar is welded with an outgoing line.

The clamping piece comprises an arc surface section and a vertical clamping section connected below the arc surface section.

The vertical clamping section protrudes out of the lower surface of the U-shaped groove.

The U-shaped groove and the clamping piece are made of copper materials.

And the tank cover is provided with an air filtering port and acid adding ports which are in one-to-one correspondence with the single lattices of the test tank body.

The air filtering piece is arranged in the air filtering opening; and a nut for preventing air leakage is arranged in the acid adding port, and a sealing gasket is arranged below the nut.

The bottom of the clapboard is away from the groove body by a certain distance, and the height of the clapboard is 130 mm.

The two ends of the groove cover are respectively provided with a buckle, and the upper end part of the test groove body is provided with a clamping groove corresponding to the buckle.

And one side of the test groove body is provided with a lead-out hole for leading out a lead wire.

The upper end part of the constant temperature water bath box is provided with a water inlet, the lower end part of the constant temperature water bath box is provided with a water outlet, and the water inlet and the water outlet are used for being externally connected with a circulating cold water source.

Has the advantages that: compared with the prior art, the utility model has simple structure, simple operation and reduced workload of staff; the closed detection tool can effectively prevent acid mist generated in the test process from influencing the workshop environment, and reduce the body damage to operators; the positive plate grid is not required to be cut off when the plate grid is required to be weighed after detection is finished, and the accuracy of a detection result is effectively ensured.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a schematic structural view of the positive/negative current collecting bars;

fig. 4 is a schematic structural diagram of a positive/negative grid.

Detailed Description

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and all other embodiments obtained without inventive labor for those skilled in the art belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the utility model comprises a test tank body 2, a tank cover 9, a constant temperature water bath tank 3 and a positive/negative current collector 10; the inside of the test groove body 2 is divided into a plurality of single lattices by a plurality of partition walls, a partition plate 6 parallel to the partition walls is arranged in each single lattice, the test groove body 2 is divided into a positive plate grid placing part 7 and a negative plate grid placing part 8 by the partition plate 6, the height of the partition plate 6 is more than or equal to that of the positive/negative plate grid 1, a certain distance is reserved between the bottom of the partition plate 6 and the groove body, the height of the partition plate 6 is 130mm, and sulfate ions can be freely diffused in front of the positive and negative electrodes; the groove cover 9 is matched with the test groove body 2, two ends of the groove cover 9 are respectively provided with a buckle 18, the upper end part of the test groove body 2 is provided with a clamping groove corresponding to the buckle, the groove cover is covered on the test groove body 2 during testing, the groove cover 9 is provided with an air filtering port 12 and an acid adding port 11 corresponding to the single cells of the test groove body 2 one by one, an air filtering sheet is arranged in the air filtering port 12, the constant pressure in the detection process can be kept, meanwhile, the acid mist is prevented from escaping, a nut for preventing air leakage is arranged in the acid adding port 11, and a sealing gasket is arranged below the nut; the upper end of the constant temperature water bath box 3 is provided with a water inlet 4, the lower end of the constant temperature water bath box is provided with a water outlet 5, the water inlet 4 and the water outlet 5 are used for being externally connected with a circulating cold water source, the detection process is kept constant in temperature, the test groove body 2 is fixed in the constant temperature water bath box 3, and the upper end of the test groove body protrudes out of the constant temperature water bath box 3.

As shown in fig. 3, the positive/negative current collecting bar 10 includes a U-shaped groove 14, a plurality of clamping devices for fixing the positive/negative grid 1 are installed in the U-shaped groove 14, corresponding to the cells of the test tank 2 one by one, the clamping devices include two symmetrical clamping pieces 15, the clamping pieces 15 include arc sections, the vertical clamping section is connected below the cambered surface section, the vertical clamping section protrudes out of the lower surface of the U-shaped groove 14, the upper end parts of the two clamping pieces 15 are fixedly connected with two side walls of the U-shaped groove 14, a spring 16 is respectively arranged on the middle lower part of the two side walls of the U-shaped groove 14, the lower end parts of the two clamping pieces extend to the middle part of the U-shaped groove 14 through the spring 16 respectively for clamping the lug part of the positive/negative grid 1, the length of the two springs 16 is larger than half of the width of the U-shaped groove 14 in a natural state, through holes are formed in the positions, corresponding to the adjacent clamping pieces, of the; one end of the positive/negative current collecting bar 10 is welded with an outgoing line 13, and one side of the test tank body 2 is provided with an outgoing hole for passing through the outgoing line 13; the U-shaped groove 14 and the clamping piece 15 are made of copper materials.

Fig. 4 is a schematic structural diagram of a positive/negative grid.

The use process comprises the following steps: firstly, taking two positive/negative current collecting bars 10, fixing a plurality of positive grids between the clamping pieces 15 of each clamping device of one positive/negative current collecting bar in sequence, and fixing a plurality of negative grids between the clamping pieces 15 of each clamping device of the other positive/negative current collecting bar; correspondingly placing the two positive/negative plate current collecting rows with the grids fixed into a testing tank body 2, separating the positive/negative plate grids in the placed single cells by a partition wall, leading out wires of the two positive/negative plate current collecting rows through a leading-out hole of the testing tank body 2, covering a tank cover 9, injecting sulfuric acid through an acid adding port 11 on the tank cover 9, installing a screw cap in the acid adding port 11 after the completion of the sulfuric acid injection, preventing air leakage, and finally electrifying for detection; after the detection is finished, the clamping device is directly opened to remove the grid, the positive grid is not required to be cut, and the accuracy of the detection result is effectively ensured; the assembling and disassembling of the sample piece are facilitated, the positive/negative current collecting bar can be butt-welded without cast welding, and meanwhile, only one positive and negative connecting wire is led out, so that the risk of acid mist leakage is reduced; one side is assembled, sulfuric acid with different concentrations can be injected into each single cell at the same time, and corrosion with different sulfuric acid densities can be detected by one-time detection.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.

Claims

1. The utility model provides a lead alloy corrosion resistance detects frock which characterized in that: the testing device comprises a testing tank body (2), a constant-temperature water bath box (3), a tank cover (9) and a positive/negative collector bar (10), wherein the testing tank body (2) is fixed in the constant-temperature water bath box (3), the upper end of the testing tank body protrudes out of the constant-temperature water bath box (3), the testing tank body (2) is divided into a plurality of single lattices through a plurality of partition walls, a partition plate (6) parallel to the partition walls is arranged in each single lattice, the testing tank body (2) is divided into a positive grid placing part (7) and a negative grid placing part (8) through the partition plates (6), and the height of each partition plate (6) is larger than or equal to that of the positive/negative grid (1); the groove cover (9) is matched with the test groove body (2) and covers the test groove body (2) during testing; the positive/negative electrode current collecting bar (10) comprises a U-shaped groove (14), a plurality of clamping devices which correspond to the single cells of the testing groove body (2) one by one and are used for fixing the positive/negative grid (1) are arranged in the U-shaped groove (14), each clamping device comprises two symmetrical clamping pieces (15), the upper end parts of the two clamping pieces (15) are fixedly connected with the two side walls of the U-shaped groove (14), springs (16) are respectively arranged on the middle lower part and the two side walls of the U-shaped groove (14), the lower end parts of the two clamping pieces extend to the middle part of the U-shaped groove (14) through the springs (16) and are used for clamping the lug part of the positive/negative grid (1), the length of the two springs (16) is larger than half of the width of the U-shaped groove (14) in a natural state, through holes are formed in the positions, corresponding to the two side walls; one end of the positive/negative current collecting bar (10) is welded with an outgoing line (13).

2. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: the clamping piece (15) comprises an arc-shaped section and a vertical clamping section connected below the arc-shaped section.

3. The lead alloy corrosion resistance detection tool according to claim 2, characterized in that: the vertical clamping section protrudes out of the lower surface of the U-shaped groove (14).

4. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: the U-shaped groove (14) and the clamping piece (15) are made of copper materials.

5. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: and the tank cover (9) is provided with an air filtering port (12) and acid adding ports (11) which correspond to the single cells of the test tank body (2) one by one.

6. The lead alloy corrosion resistance detection tool according to claim 5, characterized in that: the air filtering port (12) is internally provided with an air filtering sheet; and a nut for preventing air leakage is arranged in the acid adding port (11), and a sealing gasket is arranged below the nut.

7. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: a certain distance is reserved between the bottom of the partition plate (6) and the tank body, and the height of the partition plate (6) is 130 mm.

8. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: the two ends of the groove cover (9) are respectively provided with a buckle (18), and the upper end part of the test groove body (2) is provided with a clamping groove corresponding to the buckle.

9. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: one side of the test groove body (2) is provided with a leading-out hole for leading out the lead-out wire (13).

10. The lead alloy corrosion resistance detection tool according to claim 1, characterized in that: the constant temperature water bath box (3) is characterized in that a water inlet (4) is arranged at the upper end part, a water outlet (5) is arranged at the lower end part, and the water inlet (4) and the water outlet (5) are externally connected with a circulating cold water source.