Compression resistance testing device for sodium ion battery

Abstract

The utility model discloses a sodium ion battery compression resistance testing device, which relates to the technical field of sodium ion battery production and comprises a mounting plate, the upper end of the mounting plate is respectively and fixedly provided with a mounting frame and a testing box, and the upper end of the mounting frame is fixedly provided with an air cylinder. The output end of the air cylinder penetrates through the frame wall of the mounting frame and is fixedly provided with a testing pressing plate, a collecting mechanism is arranged on the inner side of the testing box, a cleaning mechanism is arranged on the back face of the testing box, and a driving mechanism is arranged on the outer side of the cleaning mechanism. By the adoption of the structure, when a cleaning structure in the test box pushes liquid and part of residues of a sodium ion battery shell into the discharging hole, the liquid and the part of residues can enter the liquid collecting box of the inserting groove along the discharging hole, the residues which are crushed firstly can be filtered down and collected by the filtering box, electrolyte enters the liquid collecting box to be collected, and therefore the sodium ion battery shell can be recycled. Therefore, the electrolyte of the damaged sodium-ion battery can be conveniently collected.

Description

Technical Field

[0001] This utility model belongs to the field of sodium-ion battery production technology, and specifically relates to a sodium-ion battery pressure resistance testing device. Background Technology

[0002] Sodium-ion batteries are a new type of rechargeable battery that mainly relies on the movement of sodium ions between the positive and negative electrodes to work, similar to the working principle of lithium-ion batteries.

[0003] Compared to lithium-ion batteries, sodium-ion batteries offer advantages such as longer lifespan, higher safety, and lower cost. Taking high safety as an example, although both sodium-ion and lithium-ion batteries may generate gas during formation, the gas produced by lithium-ion batteries is hydrogen, while that of sodium-ion batteries is carbon dioxide. Therefore, to effectively evaluate the performance of sodium-ion batteries, a pressure resistance test is necessary.

[0004] Currently, sodium-ion batteries generally use the same pressure resistance testing equipment as lithium-ion batteries for related tests. For example, Chinese utility model patent CN220271020U discloses a sodium-ion battery pressure resistance testing device, including a test chamber, a U-shaped plate fixed to the top of the test chamber, a cylinder fixed to the top of the U-shaped plate, and a pressure plate at the bottom of the cylinder's extension end; a partition is fixed inside the test chamber, an inner box is located on the top of the partition, and a simulation mechanism is located inside the test chamber.

[0005] The existing secondary battery (sodium-ion battery, lithium-ion battery) pressure testing device still has some shortcomings in actual use. For example, although the test chamber can perform pressure testing on secondary batteries, it may sometimes cause damage to secondary batteries with insufficient pressure resistance, causing the electrolyte to leak everywhere and affecting the subsequent testing of the test device. Utility Model Content

[0006] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a sodium-ion battery pressure resistance testing device to solve the problems mentioned in the background art.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A sodium-ion battery pressure resistance testing device includes a mounting plate, a mounting frame and a test box are fixedly mounted on the upper end of the mounting plate, a cylinder is fixedly mounted on the upper end of the mounting frame, and a test pressure plate is fixedly mounted on the output end of the cylinder through the frame wall of the mounting frame. A collection mechanism is provided inside the test box, a cleaning mechanism is provided on the back of the test box, and a driving mechanism is provided on the outside of the cleaning mechanism.

[0009] The collection mechanism includes a collection box and a filter box. A discharge hole is provided on the inner side of the test chamber, and a slot is provided on the front side of the test chamber. An extension groove is provided on the side of the slot near the discharge hole. The slot and the discharge hole are connected to each other. The collection box is inserted into the slot. The rear end of the collection box extends into the extension groove. The opening of the collection box is located directly below the discharge hole. A filter box is inserted into the upper end of the collection box. The collection mechanism can facilitate the collection of electrolyte from sodium-ion batteries.

[0010] The cleaning mechanism includes an embedded groove, which is located inside the test chamber. A scraper is slidably connected to the inside of the test chamber. A bracket is fixedly connected to the back of the test chamber. A screw is symmetrically and rotatably connected to the front of the bracket. A push rod is fixedly installed on the back of the scraper. One end of the push rod slides through the back of the test chamber and is threadedly connected to one end of the screw. The drive mechanism is located outside the screw. The cleaning mechanism allows for convenient cleaning of the inside of the test chamber.

[0011] The drive mechanism includes an assembly slot located on the back of a bracket. A drive motor is fixedly mounted on the outer side of the bracket. A shaft is rotatably connected to the inner side of the assembly slot. One end of the shaft passes through the assembly slot and is fixedly mounted to the output end of the drive motor. A second bevel tooth is fixedly mounted on the outer side of the shaft. The end of the screw away from the push rod extends into the inner side of the assembly slot and is fixedly mounted with a first bevel tooth. The first and second bevel teeth are meshed together. The drive mechanism allows for convenient operation of the cleaning mechanism.

[0012] As a preferred technical solution, a handle is fixedly connected to the front of the liquid collection box, and placement blocks are symmetrically fixedly installed on the inner side of the liquid collection box. The filter box is placed on the upper end of the placement block. The liquid collection box can be easily used through the handle, and the filter box can be easily placed into the liquid collection box through the placement block.

[0013] As a preferred technical solution, guide rails are symmetrically fixedly installed on the inner side of the test box, and the end of the scraper is slidably connected to the guide rail. One end of the guide rail extends into the inner side of the embedded groove, and the scraper can be easily slid through the guide rail.

[0014] As a preferred technical solution, a slider is fixedly connected to the end of the push rod away from the scraper. The push rod is slidably connected to the bracket through the slider, which allows the push rod to slide easily at the bracket.

[0015] As a preferred technical solution, an air pump is fixedly installed on the back of the test chamber. The input end of the air pump is located inside the test chamber, and a purification chamber is fixedly installed on the output end of the air pump. The air pump and the purification chamber can be used to treat the harmful gases released by the ruptured sodium-ion battery during the test.

[0016] As a preferred technical solution, the test chamber is a metal enclosure, which can be made of stainless steel or aluminum alloy. The use of a metal enclosure provides high mechanical strength and creates a better protective testing environment.

[0017] As a preferred technical solution, the inner wall of the test chamber is coated with a wear-resistant and corrosion-resistant layer. By setting a wear-resistant and corrosion-resistant layer, the service life of the chamber is improved, and the chamber is easier to clean after testing.

[0018] In summary, this utility model has the following main advantages:

[0019] First, when the cleaning structure in the test chamber pushes the liquid and some residue of the sodium-ion battery case into the discharge hole, it can enter the collection box of the slot along the discharge hole. The broken residue will be filtered down and collected by the filter box, while the electrolyte will enter the collection box and be collected, thus making it convenient to collect the electrolyte of the damaged sodium-ion battery.

[0020] Secondly, the drive motor operates, causing its output to rotate the shaft in the assembly slot. The rotation of the shaft causes the outer second bevel gear to mesh with the first bevel gear, and the screw connected to the first bevel gear rotates synchronously on the bracket. The rotation of the screw causes the threaded push rod on the outer side to push the scraper out of the embedded slot and slide in the test chamber at the same time, pushing the crushed sodium-ion battery electrolyte and the sodium-ion battery shell debris that cannot be removed into the discharge hole for collection. This facilitates the quick cleaning of the electrolyte inside the test chamber and also facilitates subsequent sodium-ion battery testing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a top view of the test box of this utility model;

[0023] Figure 3 This is a schematic diagram of the liquid collection box structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the drive mechanism structure of this utility model.

[0025] Reference numerals: 1. Mounting plate; 2. Mounting bracket; 3. Cylinder; 4. Test chamber; 5. Collection mechanism; 501. Slot; 502. Extension slot; 503. Discharge hole; 504. Liquid collection box; 505. Filter box; 6. Cleaning mechanism; 601. Embedding slot; 602. Scraper; 603. Push rod; 604. Bracket; 605. Screw; 7. Handle; 8. Test pressure plate; 9. Guide rail; 10. Drive mechanism; 101. Assembly slot; 102. Shaft; 103. Drive motor; 104. First bevel gear; 105. Second bevel gear; 11. Slider; 12. Air pump; 13. Purification chamber; 14. Placement block. Detailed Implementation

[0026] refer to Figures 1 to 4 This embodiment of a sodium-ion battery pressure resistance testing device includes a mounting plate 1. A mounting frame 2 and a test box 4 are fixedly mounted on the upper end of the mounting plate 1. A cylinder 3 is fixedly mounted on the upper end of the mounting frame 2. A test pressure plate 8 is fixedly mounted on the output end of the cylinder 3 through the wall of the mounting frame 2. A collection mechanism 5 is provided on the inner side of the test box 4. A cleaning mechanism 6 is provided on the back of the test box 4. A driving mechanism 10 is provided on the outer side of the cleaning mechanism 6. When a sodium-ion battery is damaged during testing, the staff first needs to remove the damaged sodium-ion battery body from the test box 4. The part that cannot be cleaned and collected can be cleaned directly using the cleaning mechanism 6 and the collection mechanism 5.

[0027] The collection mechanism 5 includes a collection box 504 and a filter box 505. A discharge hole 503 is provided on the inner side of the test chamber 4, and a slot 501 is provided on the front side of the test chamber 4. An extension groove 502 is provided on the side of the slot 501 near the discharge hole 503. The slot 501 and the discharge hole 503 are interconnected. The collection box 504 is inserted into the slot 501, and its rear end extends into the extension groove 502. The opening of the collection box 504 is located directly below the discharge hole 503. A filter box 505 is inserted at the top. When the cleaning structure in the test chamber 4 pushes the liquid and some residue of the sodium-ion battery casing into the discharge hole 503, it can enter the collection box 504 of the slot 501 along the discharge hole 503. First, the broken residue will be filtered down and collected by the filter box 505, while the electrolyte will enter the collection box 504 and be collected, thus quickly completing the cleaning process of the test chamber 4, which facilitates the subsequent sodium-ion battery test; after the electrolyte is filtered, it can be collected and reused.

[0028] The cleaning mechanism 6 includes an embedded groove 601, which is located inside the test chamber 4. A scraper 602 is slidably connected to the inside of the test chamber 4. A bracket 604 is fixedly connected to the back of the test chamber 4. A screw 605 is symmetrically rotatably connected to the front of the bracket 604. A push rod 603 is fixedly installed on the back of the scraper 602. One end of the push rod 603 slides through the back of the test chamber 4 and is threadedly connected to one end of the screw 605. A drive mechanism 10 is located outside the screw 605. The drive mechanism 10 includes an assembly groove 101, which is located on the back of the bracket 604. A drive motor 103 is fixedly installed on the outside of the bracket 604. A shaft 102 is rotatably connected to the inside of the assembly groove 101. One end of the shaft 102 passes through the assembly groove 101 and is fixedly installed to the output end of the drive motor 103. A second bevel tooth 105 is fixedly installed on the outside of the shaft 102. The end of the screw 605 away from the push rod 603 extends into the assembly groove 101. A first bevel tooth 104 is fixedly installed on the inner side of the groove 101. The first bevel tooth 104 and the second bevel tooth 105 are meshed together. The drive motor 103 is used to drive the shaft 102 to rotate in the assembly groove 101. The rotation of the shaft 102 causes the second bevel tooth 105 on the outer side to mesh with the first bevel tooth 104. The screw 605 connected to the first bevel tooth 104 rotates synchronously on the bracket 604. Due to the rotation of the screw 605, the push rod 603 connected to the outer side pushes the scraper 602 out of the embedded groove 601 and slides in the test chamber 4. The scraper pushes the crushed sodium-ion battery electrolyte and the sodium-ion battery shell debris that cannot be removed into the discharge hole 503 for collection, so as to facilitate the quick cleaning of the electrolyte inside the test chamber 4. The scraper 602 is also equipped with a scraping strip to ensure the scraping effect of electrolyte and impurities.

[0029] refer to Figure 3 A handle 7 is fixedly connected to the front of the liquid collection box 504. Placement blocks 14 are symmetrically fixedly installed on the inner side of the liquid collection box 504. The filter box 505 is placed on the upper end of the placement block 14. The handle 7 can be used to easily access the liquid collection box 504. By placing the filter box 505 on the placement block 14 of the liquid collection box 504, the filter box 505 can be easily inserted and installed in the liquid collection box 504.

[0030] refer to Figure 2 The inner side of the test box 4 is symmetrically fixed with guide rails 9. The end of the scraper 602 is slidably connected to the guide rail 9. One end of the guide rail 9 extends into the inner side of the embedded groove 601. The guide rail 9 installed in the test box 4 can facilitate the sliding of the scraper 602 in the test box 4.

[0031] refer to Figure 2The push rod 603 is fixedly connected to a slider 11 at the end away from the scraper 602. The push rod 603 is slidably connected to the bracket 604 through the slider 11. The slider 11 allows the push rod 603 to slide at the bracket 604 when it moves, thereby further ensuring the stability of the push rod 603.

[0032] refer to Figure 2 A vacuum pump 12 is fixedly installed on the back of the test chamber 4. The input end of the vacuum pump 12 is located inside the test chamber 4, and a purification chamber 13 is fixedly installed on the output end of the vacuum pump 12. During the test, the vacuum pump 12 can be turned on. When the sodium-ion battery is damaged and releases harmful gases, the gas can be drawn in by the output end of the vacuum pump 12 and then output to the purification chamber 13. After purification, the gas is discharged, which can ensure the safety of the gas.

[0033] Operating principle and advantages: During use, the sodium-ion battery is placed in the test chamber 4. The pressure plate is pushed by the cylinder 3 to perform a pressure test on the sodium-ion battery in the test chamber 4. During the test, if the sodium-ion battery is damaged, the damaged sodium-ion battery is first removed. Then, the drive motor 103 is used to drive the shaft 102 to rotate in the assembly groove 101. The rotation of the shaft 102 causes the outer second bevel tooth 105 to mesh with the first bevel tooth 104. The screw 605 connected to the first bevel tooth 104 rotates synchronously on the bracket 604. Due to the rotation of the screw 605, the push rod 603 connected to the outer thread pushes the scraper 602 out of the embedding groove 601 and slides in the test chamber 4 at the same time. The electrolyte of the sodium-ion battery that is squeezed and damaged inside the test chamber 4 and the sodium-ion battery shell debris that cannot be removed are pushed into the discharge hole 503 for collection.

[0034] During the collection process, when the electrolyte and some residue of the sodium-ion battery casing are pushed into the discharge hole 503, they can enter the collection box 504 of the slot 501 along the discharge hole 503. The first broken residue will be filtered down and collected by the filter box 505, while the electrolyte will enter the collection box 504 and be collected.

[0035] In this invention, to ensure the long-term and convenient use of the testing device, the test chamber 4 is a metal box, which can be made of stainless steel or aluminum alloy. The inner wall of the test chamber 4 is coated with a wear-resistant and corrosion-resistant layer.

[0036] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The above embodiments are merely specific examples of this utility model, and their descriptions are quite specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these obvious substitutions all fall within the protection scope of this utility model.

Claims

1. A sodium-ion battery compression resistance testing device comprising a mounting plate (1), characterized in that: The mounting plate (1) is fixedly mounted with a mounting frame (2) and a test box (4) respectively. The mounting frame (2) is fixedly mounted with a cylinder (3). The output end of the cylinder (3) is fixedly mounted with a test pressure plate (8) through the wall of the mounting frame (2). The test box (4) is provided with a collection mechanism (5) on the inside. The test box (4) is provided with a cleaning mechanism (6) on the back. The cleaning mechanism (6) is provided with a driving mechanism (10) on the outside. The collection mechanism (5) includes a liquid collection box (504) and a filter box (505). The test box (4) has a discharge hole (503) on its inner side and a slot (501) on its front side. An extension groove (502) is provided on the side of the slot (501) near the groove wall of the discharge hole (503). The slot (501) and the discharge hole (503) are connected to each other. The liquid collection box (504) is inserted into the inside of the slot (501). The rear end of the liquid collection box (504) extends into the inside of the extension groove (502). The opening of the liquid collection box (504) is located directly below the discharge hole (503). The filter box (505) is inserted into the upper end of the liquid collection box (504). The cleaning mechanism (6) includes an embedded groove (601) which is located inside the test box (4). A scraper (602) is slidably connected to the inside of the test box (4). A bracket (604) is fixedly connected to the back of the test box (4). A screw (605) is symmetrically rotatably connected to the front of the bracket (604). A push rod (603) is fixedly installed on the back of the scraper (602). One end of the push rod (603) slides through the back of the test box (4) and is threadedly connected to one end of the screw (605). The driving mechanism (10) is located outside the screw (605). 2.The sodium-ion battery compression test device according to claim 1, wherein: A handle (7) is fixedly connected to the front of the liquid collection box (504), and a placement block (14) is symmetrically fixedly installed on the inner side of the liquid collection box (504). The filter box (505) is placed on the upper end of the placement block (14). 3.The sodium-ion battery compression test device of claim 1, wherein: The test box (4) is symmetrically fixed with guide rails (9) on the inner side. The end of the scraper (602) is slidably connected to the guide rail (9). One end of the guide rail (9) extends into the inner side of the embedded groove (601). 4.The sodium-ion battery compression test device of claim 1, wherein: The push rod (603) is fixedly connected to a slider (11) at the end away from the scraper (602), and the push rod (603) is slidably connected to the bracket (604) through the slider (11).

5. The sodium-ion battery compression testing device of claim 1, wherein: The drive mechanism (10) includes an assembly slot (101), which is located on the back of the bracket (604). A drive motor (103) is fixedly installed on the outer side of the bracket (604). A shaft (102) is rotatably connected to the inner side of the assembly slot (101). One end of the shaft (102) passes through the assembly slot (101) and is fixedly installed at the output end of the drive motor (103). A second bevel tooth (105) is fixedly installed on the outer side of the shaft (102). One end of the screw (605) away from the push rod (603) extends into the inner side of the assembly slot (101) and is fixedly installed with a first bevel tooth (104). The first bevel tooth (104) and the second bevel tooth (105) are meshed together.

6. The sodium-ion battery pressure testing device according to claim 1, characterized in that: A vacuum pump (12) is fixedly installed on the back of the test box (4). The input end of the vacuum pump (12) is located inside the test box (4), and a purification box (13) is fixedly installed on the output end of the vacuum pump (12).

7. The sodium-ion battery pressure testing device according to claim 1, characterized in that: The test box (4) is a metal box, which is a stainless steel box or an aluminum alloy box.

8. The sodium-ion battery pressure testing device according to claim 1, characterized in that: The inner wall of the test chamber (4) is coated with a wear-resistant and corrosion-resistant layer.

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