A battery shell corrosion resistance testing device

Abstract

The present invention belongs to the field of corrosion resistance test technology, specifically, a battery shell corrosion resistance test device, including a test box; two side outer walls of the test box are respectively fixedly connected with fixing seats; the ends of the two fixing seats are fixedly connected with electric cylinders; the output end of the electric cylinder is fixedly connected with a pressing plate; the pressing plate is set to slide down and press on the end of the test box to seal, an atomizer extracts sodium chloride solution to generate mist, which is transported to the diversion trough by a connecting pipe, and cooperates with a plurality of branch holes to evenly deliver the mist to the inside of the test box, which can evenly atomize a plurality of battery metal shells, improve the corrosion resistance test effect of the battery metal shells, use a No. 1 elastic member to support the bottom end of the sliding plate, after sliding away from the test box on the pressing plate, a plurality of No. 1 elastic members push the sliding plate out of the interior of the test box, which can facilitate the removal and placement of the battery metal shell inside the sliding plate.

Description

Technical Field

[0001] The invention belongs to the technical field of corrosion resistance testing, in particular to a battery shell corrosion resistance testing device. Background Art

[0002] A battery is a chemical cell that can convert chemical energy into electrical energy. The battery can store chemical energy and release electrical energy to provide power when in use. The battery is usually wrapped in a plastic shell, and some batteries use a metal shell to achieve heat resistance, corrosion resistance and shock resistance.

[0003] A Chinese patent with publication number CN220709010U discloses a metal material corrosion resistance testing mechanism, including a test box, wherein a spring is fixedly connected to the lower right side of the inner wall of the test box, and a push rod is movably connected to the upper left side of the inner wall of the test box. This application mainly uses a parallelogram locking mechanism to lock the metal to be tested, thereby facilitating observation and testing of the metal.

[0004] The above-mentioned metal material corrosion resistance testing device can firmly lock the metal being tested, thereby improving the safety of the test. When testing the corrosion resistance of the battery metal shell, the shell is usually placed directly in the testing device and atomized with sodium chloride solution. After the atomization, it undergoes a high-temperature drying process to test the corrosion resistance of the battery metal shell. However, the current testing device is difficult to evenly atomize the battery metal shell, which can easily affect the test effect of the corrosion resistance of the battery metal shell.

[0005] To this end, the present invention provides a battery casing corrosion resistance testing device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a battery shell corrosion resistance testing device described in the present invention includes a test box; the outer walls on both sides of the test box are respectively fixedly connected to fixed seats; the ends of the two fixed seats are fixedly connected to electric cylinders; the output end of the electric cylinder is fixedly connected to a pressure plate; the end of the pressure plate is fixedly connected to an atomizer; a matching component is arranged inside the pressure plate, and the matching component is used to disperse the mist generated by the atomizer.

[0008] Preferably, the mating component includes a connecting tube and a diverter groove; the connecting tube is fixedly connected to the inside of the pressing plate, and the end of the connecting tube away from the pressing plate is connected to the output end of the atomizer; the diverter groove is opened inside the pressing plate, the diverter groove is connected to the connecting tube, and a plurality of through holes are opened at the bottom end of the diverter groove.

[0009] Preferably, a sliding plate is slidably connected to the inner wall of the test box; and a plurality of No. 1 elastic members are fixedly connected to the bottom end of the sliding plate.

[0010] Preferably, a plurality of support rods are fixedly connected to the end of the sliding plate; a support frame is fixedly connected to the ends of the plurality of support rods, and a plurality of protrusions are provided in a circular array at the end of the support frame.

[0011] Preferably, a plurality of storage boxes are fixedly connected to the end of the sliding plate; a plurality of No. 1 filter plates are fixedly connected to the inner walls of the plurality of storage boxes; a connecting mechanism is provided on the inner wall of the pressing plate, and the connecting mechanism is used to introduce mist into the plurality of No. 1 filter plates for spraying.

[0012] Preferably, the connecting mechanism includes a No. 1 blocking plate, a No. 1 flow groove, a No. 2 blocking plate, a No. 2 flow groove and a limit assembly; a plurality of the No. 1 blocking plates are slidably connected to the inner wall of the pressure covering plate; the No. 1 flow groove is opened inside the No. 1 blocking plate; a plurality of the No. 2 blocking plates are slidably connected to the inner wall of the pressure covering plate, and a plurality of the No. 2 blocking plates are located close to both sides of the sliding plate; the No. 2 flow groove is opened inside the No. 2 blocking plate; the limit assembly is arranged inside the pressure covering plate, and the limit assembly is used to limit the No. 1 blocking plate and the No. 2 blocking plate.

[0013] Preferably, both the No. 1 blocking plate and the No. 2 blocking plate are provided with arc grooves; the limit assembly includes a limit block and a No. 2 elastic member; a plurality of the limit blocks are slidably connected to the inner wall of the pressure covering plate, and the plurality of limit blocks are respectively located on both sides of the No. 1 blocking plate and the No. 2 blocking plate, and the limit blocks are arranged corresponding to the arc grooves; the No. 2 elastic member is fixedly connected between the limit block and the inner wall of the pressure covering plate.

[0014] Preferably, the ends of the plurality of No. 1 blocking plates are fixedly connected with connecting plates; and a matching groove is provided on the inner wall of the covering plate near the top of the connecting plate.

[0015] Preferably, a plurality of fixing rods are fixedly connected to the bottom end of the pressure covering plate; an atomizer box is fixedly connected to the bottom ends of the plurality of fixing rods, and the atomizer box can be connected to the diversion slot through the fixing rods; a No. 2 filter plate is fixedly connected to the side wall of the atomizer box; and a No. 3 filter plate is fixedly connected to the bottom end of the atomizer box.

[0016] Preferably, a square groove is formed at the end of the test box; a sealing gasket is fixedly connected to the bottom end of the pressing plate; the sealing gasket has a square cross-section, and the sealing gasket is arranged corresponding to the square groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A battery shell corrosion resistance test device described in the present invention, by sliding down and pressing the end of the test box body under the set pressure covering plate, the atomizer extracts sodium chloride solution to generate mist, which is transported to the diversion trough by the connecting pipe, and cooperates with multiple branch holes to evenly send the mist to the inside of the test box body, so that multiple battery metal shells can be evenly atomized, thereby improving the corrosion resistance test effect of the battery metal shell. A No. 1 elastic member is supported on the bottom end of the sliding plate. After sliding away from the test box body on the pressure covering plate, multiple No. 1 elastic members push the sliding plate out of the test box body, so that the battery metal shell inside the sliding plate can be conveniently taken and placed. The battery metal shell is placed on multiple protrusions of the support frame, and the mist can pass through the multiple protrusions to atomize the bottom end of the battery metal shell, thereby improving the atomization effect of the bottom end of the battery metal shell. The battery metal shell is placed inside the storage box, which reduces the space for atomizing the battery metal shell, improves the atomization effect of the battery metal shell, and can evenly atomize the outer wall of the battery metal shell.

[0019] 2. A battery shell corrosion resistance testing device described in the present invention can control the connectivity of multiple storage boxes by setting multiple No. 1 sealing plates and No. 2 sealing plates to slide on the inner wall of the pressure covering plate, evenly atomize the outer wall of the battery metal shell, and can control the delivery of mist to part of the storage box according to the amount of corrosion resistance test, and use the limit block to squeeze and snap into the arc groove to play a role in fixing and limiting the No. 1 sealing plate and the No. 2 sealing plate. By sliding up the connecting plate and snapping into the corresponding matching groove, the connecting plate can block part of the shunt groove, so that the mist delivered by the connecting pipe enters the storage box in the middle of the sliding plate in large quantities, which plays a role in controlling and blocking the shunt groove, and sends the mist to the atomization box through the fixed rod, and is sprayed out from the No. 2 filter plate and the No. 3 filter plate, so as to evenly atomize the inner wall of the battery metal shell, and use the sealing pad to be pressed into the square groove to improve the sealing effect on the inside of the test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the storage box in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the No. 2 filter plate in the present invention;

[0024] Figure 4 It is a partial structural cross-sectional view of the test box in the present invention;

[0025] Figure 5 It is a partial structural sectional view of the storage box in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the support frame in the present invention.

[0027] In the figure: 1. test box; 11. fixing seat; 12. electric cylinder; 13. pressing plate; 14. atomizer; 2. connecting pipe; 21. diverter slot; 3. sliding plate; 31. elastic part No. 1; 4. support rod; 41. support frame; 5. storage box; 51. filter plate No. 1; 6. sealing plate No. 1; 61. flow slot No. 1; 62. sealing plate No. 2; 63. flow slot No. 2; 7. limit block; 71. elastic part No. 2; 8. connecting plate; 81. matching slot; 9. fixing rod; 91. atomizer box; 92. filter plate No. 2; 93. filter plate No. 3; 94. sealing gasket. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figures 1 to 4 As shown, a battery shell corrosion test device according to an embodiment of the present invention comprises a test box 1; the outer walls of both sides of the test box 1 are respectively fixedly connected with fixing seats 11; the ends of the two fixing seats 11 are fixedly connected with electric cylinders 12; the output end of the electric cylinder 12 is fixedly connected with a pressing plate 13; the end of the pressing plate 13 is fixedly connected with an atomizer 14; a matching component is arranged inside the pressing plate 13, and the matching component is used to disperse the mist generated by the atomizer 14; when testing the corrosion resistance of the metal shell of the battery, firstly, a plurality of metal shells of the battery are placed inside the test box 1, and a proportioned sodium chloride solution is added into the atomizer 14, and the sodium chloride solution is dissolved in the atomizer 14. The liquid can be replaced according to different tests. The output ends of the electric cylinders 12 on the two fixing seats 11 retract, driving the pressing plate 13 to slide down and press on the end of the test box 1 to seal it. At this time, the atomizer 14 extracts sodium chloride solution and starts to atomize. The mist generated by atomization is evenly transported to the inside of the test box 1 by the matching components, and multiple battery metal shells are evenly atomized. The atomized battery metal shells are taken out after standing for a set time, and the deposits on the surface of the battery metal shells are removed and dried at high temperature. After drying, the shell is cooled and observed for changes, and the test is completed. The battery metal shells are evenly atomized, thereby improving the corrosion resistance test effect of the battery metal shells.

[0030] The matching component includes a connecting pipe 2 and a diverter groove 21; the connecting pipe 2 is fixedly connected to the inside of the pressing plate 13, and the end of the connecting pipe 2 away from the pressing plate 13 is connected to the output end of the atomizer 14; the diverter groove 21 is opened in the pressing plate 13, the diverter groove 21 is connected to the connecting pipe 2, and a plurality of through-holes are opened at the bottom end of the diverter groove 21; when the corrosion resistance test of multiple battery metal shells is performed, the atomizer 14 extracts sodium chloride solution to generate mist, and the mist is transported by the connecting pipe 2 to the diverter groove 21 inside the pressing plate 13, and the mist is transported to the inside of the test box 1 through the plurality of through-holes, and the mist transported by the plurality of holes can evenly atomize the multiple battery metal shells, thereby improving the atomization effect of the battery metal shells.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the inner wall of the test box 1 is slidably connected with a sliding plate 3; the bottom end of the sliding plate 3 is fixedly connected with a plurality of No. 1 elastic members 31; when placing the metal shell of the battery, since the interior of the test box 1 is relatively deep, it is not convenient to place and take out the metal shell of the battery, and the sliding plate 3 is slid on the inner wall of the test box 1, and the sliding plate 3 can store multiple metal shells of the battery, and is supported at the bottom end of the sliding plate 3 by the No. 1 elastic member 31, and when the pressing plate 13 is pressed down to the end of the test box 1, the pressing plate 13 can synchronously press the sliding plate 3 and slide down the interior of the test box 1, and the plurality of No. 1 elastic members 31 contract and bear the force, and when the pressing plate 13 slides up and away from the test box 1, the plurality of No. 1 elastic members 31 support the sliding plate 3 to slide out of the interior of the test box 1, and at this time, the metal shell of the battery inside the sliding plate 3 can be conveniently taken and placed.

[0032] like Figures 1 to 6 As shown, a plurality of support rods 4 are fixedly connected to the end of the sliding plate 3; a plurality of support rods 4 are fixedly connected to a support frame 41 at the end, and a plurality of protrusions are arranged in a circular array at the end of the support frame 41; when the metal shell of the battery is atomized, it is difficult to atomize the bottom end of the metal shell of the battery because the bottom end of the metal shell of the battery is attached to the sliding plate 3, and the support frame 41 is supported by the support rods 4 fixed to the end of the sliding plate 3, and the metal shell of the battery is placed on the plurality of protrusions of the support frame 41, and the metal shell of the battery is atomized at this time, and the mist can pass through the plurality of protrusions to atomize the bottom end of the metal shell of the battery, thereby improving the atomization effect on the bottom end of the metal shell of the battery.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, a plurality of storage boxes 5 are fixedly connected to the end of the sliding plate 3; a plurality of No. 1 filter plates 51 are fixedly connected to the inner walls of the plurality of storage boxes 5; a connecting mechanism is provided on the inner wall of the pressing plate 13, and the connecting mechanism is used to introduce mist into the plurality of No. 1 filter plates 51 for spraying; when a plurality of battery metal shells are atomized, since the space inside the test box 1 is large, a large amount of mist is required for uniform atomization, and a plurality of storage boxes 5 are fixed on the sliding plate 3, and the battery metal shells are placed inside the storage boxes 5, so as to reduce the space for atomization of the battery metal shells and improve the atomization effect of the battery metal shells, and the storage boxes 5 are connected by the connecting mechanism, and the mist delivered from the diverter slot 21 is delivered to the inner wall of the storage box 5 for spraying, and the mist is atomized by adhering to the outer wall of the battery metal shell, so as to achieve the effect of uniformly atomizing the outer wall of the battery metal shell.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the connecting mechanism includes a No. 1 blocking plate 6, a No. 1 flow groove 61, a No. 2 blocking plate 62, a No. 2 flow groove 63 and a limit assembly; multiple No. 1 blocking plates 6 are slidably connected to the inner wall of the pressing plate 13; the No. 1 flow groove 61 is opened inside the No. 1 blocking plate 6; multiple No. 2 blocking plates 62 are slidably connected to the inner wall of the pressing plate 13, and multiple No. 2 blocking plates 62 are close to the two sides of the sliding plate 3; the No. 2 flow groove 63 is opened inside the No. 2 blocking plate 62; the limit assembly is arranged inside the pressing plate 13, and the limit The positioning assembly is used to limit the position of the No. 1 blocking plate 6 and the No. 2 blocking plate 62; when mist is transported to the interior of the storage box 5, multiple No. 1 blocking plates 6 and No. 2 blocking plates 62 are used to slide down the inner wall of the pressing plate 13. When the No. 1 flow slot 61 and the No. 2 flow slot 63 coincide with the cavity inside the storage box 5, the No. 1 blocking plate 6 and the No. 2 blocking plate 62 are fixed and limited by the limiting assembly, and the mist transported at the diverter slot 21 can enter the storage box 5 through the No. 1 flow slot 61 and the No. 2 flow slot 63 and be sprayed out, and the outer wall of the metal shell of the battery is atomized.

[0035] It should be noted that the two sides of the storage box 5 in the middle of the sliding plate 3 are connected by two No. 1 blocking plates 6, and the storage boxes 5 on both sides of the sliding plate 3 are connected by a No. 1 blocking plate 6 and a No. 2 blocking plate 62.

[0036] At the same time, if there are fewer battery metal shells to be tested for corrosion resistance, the battery metal shells can be placed inside the storage box 5 in the middle of the sliding plate 3, and multiple No. 1 sealing plates 6 and multiple No. 2 sealing plates 62 can be slid into the interior of the pressure plate 13 and fixed in place by limiting components. At this time, the mist at the diversion groove 21 is only transported to the interior of the storage box 5 in the middle of the sliding plate 3, thereby controlling the transport of mist to the interior of the multiple storage boxes 5.

[0037] The No. 1 blocking plate 6 and the No. 2 blocking plate 62 are both provided with arc grooves; the limiting assembly includes a limiting block 7 and a No. 2 elastic member 71; a plurality of the limiting blocks 7 are slidably connected to the inner wall of the pressure covering plate 13, and the plurality of limiting blocks 7 are respectively located on both sides of the No. 1 blocking plate 6 and the No. 2 blocking plate 62, and the limiting blocks 7 are arranged corresponding to the arc grooves; the No. 2 elastic member 71 is fixedly connected between the limiting block 7 and the inner wall of the pressure covering plate 13; when the No. 1 blocking plate 6 and the No. 2 blocking plate are in contact with each other, the limiting blocks 7 are in contact with each other ... When the plate 62 slides, the No. 1 blocking plate 6 and the No. 2 blocking plate 62 can squeeze the limit block 7 respectively, and press the limit block 7 into the inner wall of the pressure covering plate 13. The No. 2 elastic member 71 is elastically stressed. After the No. 1 blocking plate 6 and the No. 2 blocking plate 62 continue to slide, and the limit block 7 corresponds to the arc groove, the No. 2 elastic member 71 elastically resets and squeezes the limit block 7, and squeezes the limit block 7 into the arc groove, which plays a role in fixing and limiting the No. 1 blocking plate 6 and the No. 2 blocking plate 62.

[0038] The ends of the plurality of No. 1 blocking plates 6 are fixedly connected with connecting plates 8; a matching groove 81 is provided on the inner wall of the pressing plate 13 near the top of the connecting plate 8; when mist is transported into the storage box 5 in the middle of the sliding plate 3, the No. 1 blocking plate 6 is used to drive the connecting plate 8 to slide up synchronously, so that the connecting plate 8 is correspondingly inserted into the matching groove 81, and the connecting plate 8 can block a part of the diverter groove 21, so that the mist transported by the connecting pipe 2 enters the storage box 5 in the middle of the sliding plate 3 in large quantities, thereby controlling and blocking the diverter groove 21.

[0039] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the bottom end of the pressing plate 13 is fixed with a plurality of fixing rods 9; the bottom ends of the plurality of fixing rods 9 are fixed with an atomizer box 91, and the atomizer box 91 can be connected with the diverter slot 21 through the fixing rods 9; the side wall of the atomizer box 91 is fixed with a No. 2 filter plate 92; the bottom end of the atomizer box 91 is fixed with a No. 3 filter plate 93; when the metal shell of the battery is atomized, the fixing rods 9 are used to cooperate with the atomizer box 91 to be fixed to the bottom end of the pressing plate 13, and after the pressing plate 13 is pressed on the end of the test box 1, the atomizer box 91 can be attached to the inner wall of the metal shell of the battery, and when the mist is transported into the diverter slot 21, part of the mist reaches the atomizer box 91 through the inner wall of the pressing plate 13 and the fixing rods 9, and is sprayed out from the No. 2 filter plate 92 and the No. 3 filter plate 93, so as to achieve the effect of uniformly atomizing the inner wall of the metal shell of the battery.

[0040] like Figures 1 to 4As shown, a square groove is provided at the end of the test box 1; a sealing gasket 94 is fixedly connected to the bottom end of the pressing plate 13; the cross-sectional shape of the sealing gasket 94 is square, and the sealing gasket 94 is arranged corresponding to the square groove; when the metal shell of the battery is atomized, the pressing plate 13 is used to drive the sealing gasket 94 to slide down, and when the pressing plate 13 is pressed on the end of the test box 1, the sealing gasket 94 is pressed into the square groove accordingly, thereby improving the sealing effect on the inside of the test box 1 and reducing the occurrence of leakage of the generated mist.

[0041] Working process: When testing the corrosion resistance of battery metal shells, first put multiple battery metal shells into the test box 1, add the proportioned sodium chloride solution into the atomizer 14, and the sodium chloride solution can be replaced according to different tests. The output ends of the electric cylinders 12 on the two fixed seats 11 retract, driving the pressing plate 13 to slide down and press on the end of the test box 1 to seal. At this time, the atomizer 14 extracts the sodium chloride solution and starts atomization. The mist generated by the atomization is evenly transported to the inside of the test box 1 by the matching components, and the multiple battery metal shells are evenly atomized. The atomized battery metal shells are taken out after standing for a set time. , after removing the deposits on the surface of the metal shell of the battery, dry it at high temperature. After drying, wait for cooling and observe the changes of the shell to complete the test. The metal shell of the battery is evenly atomized, thereby improving the corrosion resistance test effect of the metal shell of the battery; when performing corrosion resistance tests on multiple metal shells of batteries, the atomizer 14 extracts sodium chloride solution to generate mist, and the mist is transported by the connecting pipe 2 to the diverter groove 21 inside the pressing plate 13, and the mist is sent down to the inside of the test box 1 through multiple through-holes. The mist transported by the multiple holes can evenly atomize multiple metal shells of the batteries, thereby improving the atomization effect of the metal shells of the batteries;

[0042] When placing the metal shell of the battery, it is not convenient to place and take out the metal shell of the battery because the interior of the test box 1 is deep. The sliding plate 3 is used to slide on the inner wall of the test box 1. The sliding plate 3 can store multiple metal shells of the battery and is supported at the bottom end of the sliding plate 3 by the No. 1 elastic member 31. When the pressing plate 13 is pressed down to the end of the test box 1, the pressing plate 13 can synchronously press the sliding plate 3 and slide down the interior of the test box 1. Multiple No. 1 elastic members 31 shrink and bear the force. When the pressing plate 13 slides up and away from the test box 1, multiple No. 1 elastic members 31 support the sliding plate 3 slides out of the interior of the test box 1, and at this time, the metal shell of the battery inside the sliding plate 3 can be conveniently taken and placed; when the metal shell of the battery is atomized, since the bottom end of the metal shell of the battery is attached to the sliding plate 3, it is difficult to atomize the bottom end of the metal shell of the battery, and the support frame 41 is fixed to the end of the sliding plate 3 by the support rod 4, and the metal shell of the battery is placed on multiple protrusions of the support frame 41. At this time, the metal shell of the battery is atomized, and the mist can pass through the multiple protrusions to atomize the bottom end of the metal shell of the battery, thereby improving the atomization effect of the bottom end of the metal shell of the battery;

[0043] When atomizing multiple battery metal shells, since the space inside the test box 1 is large, a large amount of mist is required for uniform atomization. Multiple storage boxes 5 are fixed on the sliding plate 3, and the battery metal shells are placed inside the storage box 5, which reduces the space for atomizing the battery metal shells and improves the atomization effect of the battery metal shells. The storage box 5 is connected with the connection mechanism, and the mist delivered at the diverter slot 21 is delivered to the inner wall of the storage box 5 for spraying. The mist adheres to the outer wall of the battery metal shell and atomizes, which has the effect of uniformly atomizing the outer wall of the battery metal shell. When transporting mist to the interior of the storage box 5, multiple No. 1 blocking plates 6 and No. 2 blocking plates 62 are used to slide down the inner wall of the pressing plate 13. When the No. 1 flow slot 61 and the No. 2 flow slot 63 coincide with the cavity inside the storage box 5, the No. 1 blocking plate 6 and the No. 2 blocking plate 6 are moved by the limiting assembly. The No. 1 blocking plate 62 is fixed and limited, and the mist transported at the shunt slot 21 can enter the storage box 5 through the No. 1 flow slot 61 and the No. 2 flow slot 63 and be sprayed out to atomize the outer wall of the battery metal shell. It should be noted that the two sides of the storage box 5 in the middle of the sliding plate 3 are connected by two No. 1 blocking plates 6, and the storage boxes 5 on both sides of the sliding plate 3 are connected by a No. 1 blocking plate 6 and a No. 2 blocking plate 62. At the same time, if there are fewer battery metal shells to be tested for corrosion resistance, the battery metal shell can be placed in the storage box 5 in the middle of the sliding plate 3, and multiple No. 1 blocking plates 6 and multiple No. 2 blocking plates 62 are pushed up and slid into the interior of the pressure plate 13, and fixed and limited by the limiting assembly. At this time, the mist at the shunt slot 21 is only transported to the interior of the storage box 5 in the middle of the sliding plate 3, which plays a role in controlling the transport of mist to the interior of multiple storage boxes 5;

[0044] When the No. 1 blocking plate 6 and the No. 2 blocking plate 62 slide, the No. 1 blocking plate 6 and the No. 2 blocking plate 62 can respectively squeeze the limit block 7, and press the limit block 7 into the inner wall of the pressure plate 13. The No. 2 elastic member 71 is elastically stressed. After the No. 1 blocking plate 6 and the No. 2 blocking plate 62 continue to slide, and the limit block 7 corresponds to the arc groove, the No. 2 elastic member 71 elastically resets and squeezes the limit block 7, and squeezes the limit block 7 into the arc groove, which plays a role in fixing and limiting the No. 1 blocking plate 6 and the No. 2 blocking plate 62;

[0045] When mist is transported to the storage box 5 in the middle of the sliding plate 3, the first blocking plate 6 is used to drive the connecting plate 8 to slide up synchronously, so that the connecting plate 8 is correspondingly inserted into the matching groove 81, and the connecting plate 8 can block a part of the diverter groove 21, so that a large amount of mist transported by the connecting pipe 2 enters the storage box 5 in the middle of the sliding plate 3, which plays a role in controlling and blocking the diverter groove 21;

[0046] When the metal shell of the battery is atomized, the fixing rod 9 is used to cooperate with the atomizer box 91 to be fixed on the bottom end of the pressing plate 13. After the pressing plate 13 is pressed on the end of the test box 1, the atomizer box 91 can be attached to the inner wall of the metal shell of the battery. When the mist is transported into the diverter slot 21, part of the mist passes through the inner wall of the pressing plate 13 and the fixing rod 9 to reach the atomizer box 91, and is sprayed out from the second filter plate 92 and the third filter plate 93, so as to achieve the effect of uniformly atomizing the inner wall of the metal shell of the battery.

[0047] When the metal shell of the battery is atomized, the sealing gasket 94 is driven to slide down by the pressing plate 13. When the pressing plate 13 is pressed on the end of the test box 1, the sealing gasket 94 is pressed into the square groove accordingly, thereby improving the sealing effect of the inside of the test box 1 and reducing the leakage of the generated mist.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A battery shell corrosion resistance testing device, characterized in that: The test box (1) comprises a test box (1); the outer walls on both sides of the test box (1) are respectively fixedly connected to fixing seats (11); the ends of the two fixing seats (11) are fixedly connected to electric cylinders (12); the output end of the electric cylinder (12) is fixedly connected to a pressing plate (13), and when the output end of the electric cylinder (12) retracts, it can drive the pressing plate (13) to slide down and press on the end of the test box (1) to seal; the end of the pressing plate (13) is fixedly connected to an atomizer (14); a matching component is arranged inside the pressing plate (13), and the matching component is used to disperse the mist generated by the atomizer (14); The matching component comprises a connecting pipe (2) and a diverter groove (21); the connecting pipe (2) is fixedly connected to the inside of the pressing plate (13), and one end of the connecting pipe (2) away from the pressing plate (13) is connected to the output end of the atomizer (14); the diverter groove (21) is arranged inside the pressing plate (13), the diverter groove (21) is connected to the connecting pipe (2), and a plurality of through-going diverter holes are arranged at the bottom end of the diverter groove (21); The inner wall of the test box (1) is slidably connected to a sliding plate (3); a plurality of No. 1 elastic members (31) are fixedly connected to the bottom end of the sliding plate (3); The end of the sliding plate (3) is fixedly connected to a plurality of support rods (4); the ends of the plurality of support rods (4) are fixedly connected to a support frame (41), and the end of the support frame (41) has a plurality of protrusions in a circular array.

2. A battery casing corrosion resistance testing device according to claim 1, characterized in that: A plurality of storage boxes (5) are fixedly connected to the end of the sliding plate (3); a plurality of number one filter plates (51) are fixedly connected to the inner walls of the plurality of storage boxes (5); and a connecting mechanism is provided on the inner wall of the pressing plate (13), the connecting mechanism being used to guide mist into the plurality of number one filter plates (51) for spraying.

3. A battery casing corrosion resistance testing device according to claim 2, characterized in that: The connecting mechanism comprises a No. 1 blocking plate (6), a No. 1 flow slot (61), a No. 2 blocking plate (62), a No. 2 flow slot (63) and a limit assembly; a plurality of the No. 1 blocking plates (6) are slidably connected to the inner wall of the pressing plate (13); the No. 1 flow slot (61) is arranged inside the No. 1 blocking plate (6); a plurality of the No. 2 blocking plates (62) are slidably connected to the inner wall of the pressing plate (13), and a plurality of the No. 2 blocking plates (62) are located close to both sides of the sliding plate (3); the No. 2 flow slot (63) is arranged inside the No. 2 blocking plate (62); the limit assembly is arranged inside the pressing plate (13), and the limit assembly is used to limit the No. 1 blocking plate (6) and the No. 2 blocking plate (62).

4. A battery casing corrosion resistance testing device according to claim 3, characterized in that: The first blocking plate (6) and the second blocking plate (62) are both provided with arc grooves; the limiting assembly comprises a limiting block (7) and a second elastic member (71); a plurality of the limiting blocks (7) are slidably connected to the inner wall of the pressure covering plate (13), and the plurality of limiting blocks (7) are respectively located on both sides of the first blocking plate (6) and the second blocking plate (62), and the limiting blocks (7) are arranged corresponding to the arc grooves; the second elastic member (71) is fixedly connected between the limiting block (7) and the inner wall of the pressure covering plate (13).

5. A battery casing corrosion resistance testing device according to claim 3, characterized in that: The ends of the plurality of No. 1 blocking plates (6) are fixedly connected to a connecting plate (8); and a matching groove (81) is provided on the inner wall of the pressing plate (13) near the top of the connecting plate (8).

6. A battery casing corrosion resistance testing device according to claim 1, characterized in that: The bottom end of the pressing plate (13) is fixedly connected to a plurality of fixing rods (9); the bottom ends of the plurality of fixing rods (9) are fixedly connected to an atomizing box (91), and the atomizing box (91) can be connected to the diversion slot (21) via the fixing rods (9); a second filter plate (92) is fixedly connected to the side wall of the atomizing box (91); and a third filter plate (93) is fixedly connected to the bottom end of the atomizing box (91).

7. A battery casing corrosion resistance testing device according to claim 1, characterized in that: A square groove is provided at the end of the test box body (1); a sealing gasket (94) is fixedly connected to the bottom end of the pressure plate (13); the sealing gasket (94) has a square cross-section, and the sealing gasket (94) is arranged corresponding to the square groove.

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