Lithium ion battery performance detection device and method

Abstract

The present invention relates to the technical field of lithium-ion batteries, and discloses a lithium-ion battery performance detection device and method, the lithium-ion battery performance detection device comprises a main body, the inner wall of the main body is fixedly connected with a metal plate, the inner wall of the main body is slidably connected with a carbon plate, a warning structure is arranged inside the main body, the warning structure comprises a receiving plate, the inner wall of the main body is slidably connected with the receiving plate, and the bottom of the receiving plate is hinged with one end of a connecting plate. The lithium-ion battery performance detection device and method, in order to better remind operators to add electrolyte, is provided with a warning structure, and the receiving plate receives the solid crystallized from the electrolyte. When the weight reaches a certain value, the connecting plate, sliding plate, slide rail, small spring rod, short rotating bar and the like cooperate with each other, and the resistance rod contacts the resistance warning device, thereby detecting the internal electrolyte concentration and height, and then reminding the operator to add electrolyte.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium ion batteries, and in particular to a lithium ion battery performance detection device and method. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. In the 1970s, people proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996. Their safety, specific capacity, self-discharge rate and performance-price ratio are better than lithium ion batteries. Due to its own high technical requirements, only companies in a few countries are producing this type of lithium metal battery.

[0004] During the use of lithium-ion batteries, the electrolyte inside them will crystallize to form a solid medium, which will shorten the life of the lithium-ion battery and cause aging and performance degradation after long-term use. However, the current lithium-ion battery performance detection device cannot conveniently observe the degree of crystallization of the electrolyte inside the lithium-ion battery, and cannot effectively remind the operator to add electrolyte. In view of this, we propose a lithium-ion battery performance detection device and method. Summary of the invention

[0005] The object of the present invention is to provide a lithium ion battery performance detection device and method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a lithium-ion battery performance detection device, comprising a main body, a metal plate fixedly connected to the inner wall of the main body, a carbon plate slidably connected to the inner wall of the main body, and a warning structure arranged inside the main body, the warning structure comprising:

[0007] A receiving plate, wherein the receiving plate is slidably connected to the inner wall of the main body, one end of a connecting plate is hingedly connected to the bottom of the receiving plate, the other end of the connecting plate is hingedly connected to a sliding plate, both sides of the sliding plate are slidably connected to slide rails, and the slide rails are fixedly connected to the inner wall of the main body;

[0008] A small spring rod, one end of the small spring rod is fixedly connected to the inner wall of the main body, the other end of the small spring rod is fixedly connected to a sliding plate, a rotating column is fixedly connected to the side of the sliding plate close to the main body, and a short rotating bar is rotatably connected to the inner wall of the main body;

[0009] A warning gear, the front side of the main body is rotatably connected with a warning gear, the warning gear is fixedly connected to the surface of the short rotating bar, the warning gear is meshed with a warning lower rack, the warning gear is meshed with a warning upper rack, the right side of the warning lower rack is fixedly connected with a long connecting rod, and the left side of the warning upper rack is fixedly connected with a short connecting rod.

[0010] Preferably, one end of the left telescopic rod is hinged to the top of the short connecting rod, one end of the right telescopic rod is hinged to the top of the long connecting rod, the other end of the left telescopic rod is hinged to a resistance rod, the other end of the telescopic right telescopic rod is hinged to the resistance rod, and a large spring rod is fixedly connected to the bottom of the resistance rod.

[0011] Preferably, the bottom of the large spring rod is fixedly connected to a fixed block, the fixed block is fixedly connected to the front side of the main body, the top of the interference rod is in contact with a interference alarm, the interference alarm is fixedly connected to the front side of the main body, the inner wall of the main body is fixedly connected to a filter plate, the inner wall of the main body is slidably connected to a rotating column, the surface of the rotating column is fixedly connected to a sliding column, and the sliding column is slidably connected in the slide groove of the slide groove column.

[0012] Preferably, a stirring structure is provided inside the main body, and the stirring structure includes a sealing plate, a sealing plate is fixedly connected to the front side of the main body, an upper stirring rack is fixedly connected to the right side of the short connecting rod, and a lower stirring rack is fixedly connected to the left side of the long connecting rod, the upper stirring rack is meshed with a large stirring gear, and the large stirring gear is meshed with a lower stirring rack.

[0013] Preferably, the large stirring gear is passed through and fixed on the stirring rotating rod, the stirring rotating rod is rotatably connected to the inner wall of the main body, a large agitator is fixedly connected to the rear side of the stirring rotating rod, a small stirring gear is slidably connected to the inner wall of the main body, the small stirring gear is meshed with a short stirring rack, the short stirring rack is fixedly connected to the left side of the receiving plate, and a small agitator is fixedly connected to the right side of the stirring gear.

[0014] Preferably, an attachment structure is provided inside the main body, and the attachment structure includes a left gear, the front side of the main body is rotatably connected to the left gear, the inner wall of the main body is rotatably connected to the left rotating rod, the surface of the left rotating rod is fixedly connected to the left gear, the left gear is meshed with a left rack, the left rack is slidably connected to the front side of the main body, and a ruler is fixedly connected to the front side of the main body.

[0015] Preferably, a pointer is fixedly connected to the right side of the left rack, an L-plate is slidably connected to the inner wall of the main body, an attached gear is rotatably connected to the inner wall of the main body, the attached gear is meshed with an attached rack, and an L-plate is fixedly connected to the rear side of the attached rack.

[0016] Preferably, a cleaning structure is provided inside the main body, and the cleaning structure includes an observation window plate, to which the front side of the main body is fixedly connected, the inner wall of the main body is rotatably connected to a right rotating rod, the surface of the right rotating rod is fixedly connected to a right gear, the right gear is meshed with a right rack, and the front side of the main body is slidably connected to the right rack.

[0017] Preferably, the front side of the right rack is fixedly connected to an attachment connecting rod, the attachment connecting rod abuts against an observation window plate, the left side of the attachment connecting rod is fixedly connected to a wiping block, the inner wall of the main body is rotatably connected to a cleaning gear, the cleaning gear is fixedly connected to the right rotating rod, the cleaning gear is meshed with a cleaning rack, and the rear side of the cleaning rack is fixedly connected to an L-plate.

[0018] A method for a lithium-ion battery performance detection device comprises the following steps:

[0019] S1. First, the main body starts to be energized, and the metal plate and the carbon plate are energized. When the water in the electrolyte is electrolyzed and separated during the working process, it escapes through the pores, so that the solute in the electrolyte is crystallized, and the solid falls onto the receiving plate through the filter plate. The receiving plate drives the connecting plate to press down, and the connecting plate drives the sliding plate to slide in the slide groove of the slide rail. At the same time, the sliding plate squeezes the small spring rod, so as to detect the concentration of the electrolyte;

[0020] S2. Further, through the rotating column fixed on the sliding plate, the short rotating bar drives the warning gear to rotate, the warning gear drives the lower warning rack and the upper warning rack to move, the lower warning rack drives the long connecting rod to move, and the upper warning rack drives the short connecting rod to move;

[0021] S3, the left telescopic rod is driven to move by the short connecting rod, the right telescopic rod is driven to move by the long connecting rod, the left telescopic rod and the right telescopic rod drive the conflict rod to move, the conflict rod squeezes the large spring rod, and the conflict rod contacts the conflict alarm, so that when the weight reaches a certain value, the conflict alarm warns the user;

[0022] S4, by stirring the upper rack and the lower rack to drive the stirring gear to rotate, the stirring gear drives the stirring rotating rod to rotate, the stirring rotating rod drives the large stirrer to rotate, the stirring short rack drives the stirring small gear to rotate, and the stirring small gear drives the small stirrer to rotate, so that the fixed inside the main body is quickly dissolved back into the liquid;

[0023] S5. As the weight of the carbon plate increases, the L plate is driven to move downward, the L plate drives the attached rack to move, the attached rack rotates with the attached gear, the attached gear drives the left rotating rod to rotate, the left rotating rod drives the left gear to rotate, the left gear drives the left rack to move, the left rack drives the pointer to move, the pointer moves on the surface of the ruler, and the amount of metal cations is reflected by the weight of the carbon plate;

[0024] S6. The L plate moves to drive the cleaning rack to move, the cleaning rack drives the cleaning gear to rotate, the cleaning gear drives the right rotating rod to rotate, the right rotating rod drives the right gear to rotate, the right gear drives the right rack to move, the right rack drives the attached connecting rod to move, the attached connecting rod drives the wiping block to move, the wiping block moves on the observation window plate, thereby maintaining the clarity of the inside of the observation window plate.

[0025] Compared with the prior art, the present invention provides a lithium ion battery performance detection device and method, which has the following beneficial effects:

[0026] 1. In order to better remind the operator to add electrolyte, the lithium-ion battery performance detection device and method are provided with a warning structure. The receiving plate receives the solid crystallized from the electrolyte. When the weight reaches a certain value, the connecting plate, the sliding plate, the slide rail, the small spring rod, the short rotating bar and the like cooperate with each other, and the resistance rod contacts the resistance warning device, thereby detecting the internal electrolyte concentration and height, and then reminding the operator to add electrolyte.

[0027] 2. In order to make the crystallized solids blend into the newly added liquid, the lithium-ion battery performance detection device and method are provided with a stirring structure. The stirring upper rack and the stirring lower rack drive the stirring large gear and the stirring short rack drives the stirring small gear, thereby driving the large agitator and the small agitator, thereby driving the internal electrolyte to stir the solid on the receiving plate, so that the internal electrolyte solute can be repeatedly used.

[0028] 3. In order to detect the quality of the metal anode, the lithium-ion battery performance detection device and method are provided with an attachment structure. The metal ions of the metal anode are bonded to the carbon plate through the carbon plate fixed on the L plate to form a metal compound. The left gear, the left rotating rod, the left rack, the pointer, the L plate, the attachment gear, and the attachment rack cooperate with each other so that the pointer points to the scale on the ruler, thereby reflecting the activity of the internal metal ions through the degree of bonding.

[0029] 4. In order to prevent the observation window from fogging, the lithium-ion battery performance detection device and method are provided with a cleaning structure. The right rotating rod, the right gear, the right rack, the attachment connecting rod, the cleaning gear, and the cleaning rack cooperate with each other. When the L plate rises and falls, the wiping block is driven to move back and forth on the observation window, thereby maintaining the clarity inside the observation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall side plan view of the present invention;

[0031] Figure 2 It is a schematic diagram of a top view and cross-sectional structure of the present invention;

[0032] Figure 3It is a schematic diagram of a side structural cross-sectional view of the present invention;

[0033] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0034] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0035] Figure 6 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0036] Figure 7 It is a schematic diagram of the connection structure of the docking plate of the present invention;

[0037] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of the middle C area;

[0038] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of area D in the middle.

[0039] In the figure: 1. main body; 2. metal plate; 3. carbon plate; 4. warning structure; 41. receiving plate; 42. connecting plate; 43. sliding plate; 44. slide rail; 45. small spring rod; 46. short rotating bar; 47. warning gear; 48. warning lower rack; 49. warning upper rack; 410. short connecting rod; 411. long connecting rod; 412. left telescopic rod; 413. right telescopic rod; 414. large spring rod; 415. fixed block; 416. conflict rod; 417. conflict alarm; 418. filter plate; 419. rotating column; 420. sliding column; 421. chute column; 5. stirring structure; 51 , sealing plate; 52, stirring upper rack; 53, stirring lower rack; 54, stirring large gear; 55, stirring rotating rod; 56, large agitator; 57, stirring small gear; 58, stirring short rack; 59, small agitator; 6, attachment structure; 61, left gear; 62, left rotating rod; 63, left rack; 64, ruler; 65, pointer; 66, L plate; 67, attachment gear; 68, attachment rack; 7, cleaning structure; 71, observation window plate; 72, right rotating rod; 73, right gear; 74, right rack; 75, attachment connecting rod; 76, wiping block; 77, cleaning gear; 78, cleaning rack. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-9 The present invention provides a technical solution: a lithium-ion battery performance detection device, comprising a main body 1, a metal plate 2 is fixedly connected to the inner wall of the main body 1, and a carbon plate 3 is slidably connected to the inner wall of the main body 1.

[0042] In one embodiment of the present invention, a warning structure 4 is provided inside the main body 1, and the warning structure 4 includes: a receiving plate 41, the receiving plate 41 is slidably connected to the inner wall of the main body 1, one end of a connecting plate 42 is hingedly connected to the bottom of the receiving plate 41, and the other end of the connecting plate 42 is hingedly connected to a sliding plate 43, and sliding rails 44 are slidably connected to both sides of the sliding plate 43, and the sliding rails 44 are fixedly connected to the inner wall of the main body 1, and one end of a small spring rod 45 is fixedly connected to the inner wall of the main body 1, and the other end of the small spring rod 45 is fixedly connected to the sliding plate 43, and a rotating column 419 is fixedly connected to the side of the sliding plate 43 close to the main body 1, and a short rotating bar 46 is rotatably connected to the inner wall of the main body 1, and a warning gear 47 is rotatably connected to the front side of the main body 1, and the warning gear 47 is fixedly connected to the surface of the short rotating bar 46, and the warning gear 47 is meshed with a warning lower rack 48, and the warning gear 47 is meshed with a warning upper rack 49, and the right side of the warning lower rack 48 is fixedly connected to the long connecting rod 41 1. A short connecting rod 410 is fixedly connected to the left side of the warning upper rack 49. Further, one end of a left telescopic rod 412 is hinged on the top of the short connecting rod 410, one end of a right telescopic rod 413 is hinged on the top of the long connecting rod 411, the other end of the left telescopic rod 412 is hinged with a resistance rod 416, and the other end of the right telescopic rod 413 is hinged with a resistance rod 416. A large spring rod 414 is fixedly connected to the bottom of the resistance rod 416. Further, a fixed block 415 is fixedly connected to the bottom of the large spring rod 414, the fixed block 415 is fixedly connected to the front side of the main body 1, and a resistance alarm 417 is abutted on the top of the resistance rod 416. The resistance alarm 417 is fixedly connected to the front side of the main body 1. A filter plate 418 is fixedly connected to the inner wall of the main body 1. A rotating column 419 is slidably connected to the inner wall of the main body 1. A sliding column 420 is fixedly connected to the surface of the rotating column 419, and the sliding column 420 is slidably connected in the sliding groove of the sliding groove column 421.

[0043] In one embodiment of the present invention, a stirring structure 5 is provided inside the main body 1, and the stirring structure 5 includes a sealing plate 51, a sealing plate 51 is fixedly connected to the front side of the main body 1, an upper stirring rack 52 is fixedly connected to the right side of the short connecting rod 410, and a lower stirring rack 53 is fixedly connected to the left side of the long connecting rod 411, and the upper stirring rack 52 is meshed with a stirring large gear 54, and the stirring large gear 54 is meshed with the stirring lower rack 53. Further, the stirring large gear 54 penetrates and is fixed on the stirring rotating rod 55, and the stirring rotating rod 55 It is rotatably connected to the inner wall of the main body 1, and a large agitator 56 is fixedly connected to the rear side of the stirring rotating rod 55. A stirring pinion 57 is slidably connected to the inner wall of the main body 1. The stirring pinion 57 is meshed with a stirring short rack 58. The stirring short rack 58 is fixedly connected to the left side of the receiving plate 41, and a small agitator 59 is fixedly connected to the right side of the stirring pinion 57. Two groups of small agitators 59, stirring pinions 57, and stirring short racks 58 are arranged, with the center line of the receiving plate 41 as the axis of symmetry, and are mirror-imaged on the left and right sides of the center line of the receiving plate 41.

[0044] In one embodiment of the present invention, an attachment structure 6 is provided inside the main body 1, and the attachment structure 6 includes a left gear 61, the left gear 61 is rotatably connected to the front side of the main body 1, the left rotating rod 62 is rotatably connected to the inner wall of the main body 1, the left gear 61 is fixedly connected to the surface of the left rotating rod 62, the left gear 61 is meshed with a left rack 63, the left rack 63 is slidably connected to the front side of the main body 1, and a ruler 64 is fixedly connected to the front side of the main body 1. Furthermore, a pointer 65 is fixedly connected to the right side of the left rack 63, an L-plate 66 is slidably connected to the inner wall of the main body 1, and an attachment gear 67 is rotatably connected to the inner wall of the main body 1, the attachment gear 67 is meshed with an attachment rack 68, and the rear side of the attachment rack 68 is fixedly connected to the L-plate 66, and the L-plate 66 is provided with a hollow cavity to form relative airbags.

[0045] In one embodiment of the present invention, a cleaning structure 7 is provided inside the main body 1, and the cleaning structure 7 includes an observation window plate 71, the observation window plate 71 is fixedly connected to the front side of the main body 1, the inner wall of the main body 1 is rotatably connected to the right rotating rod 72, the surface of the right rotating rod 72 is fixedly connected to the right gear 73, the right gear 73 is meshed with the right rack 74, and the front side of the main body 1 is slidably connected to the right rack 74. Furthermore, an attachment connecting rod 75 is fixedly connected to the front side of the right rack 74, the attachment connecting rod 75 is in contact with the observation window plate 71, and a wiping block 76 is fixedly connected to the left side of the attachment connecting rod 75. A cleaning gear 77 is rotatably connected to the inner wall of the main body 1, the cleaning gear 77 is fixedly connected to the right rotating rod 72, the cleaning gear 77 is meshed with the cleaning rack 78, and the rear side of the cleaning rack 78 is fixedly connected to the L plate 66.

[0046] A method for a lithium-ion battery performance detection device comprises the following steps:

[0047] S1. First, the main body 1 is energized, and the metal plate 2 and the carbon plate 3 are energized. When the water in the electrolyte is electrolyzed and separated during the working process, it escapes through the pores, so that the solute in the electrolyte is crystallized, and the solid falls onto the receiving plate 41 through the filter holes of the filter plate 418. The receiving plate 41 drives the bottom connecting plate 42 to press down, and the connecting plate 42 drives the sliding plate 43 to slide in the slide groove of the slide rail 44. Under the weight of the receiving plate 41, the sliding plate 43 squeezes the small spring rod 45, so as to detect the concentration of the electrolyte;

[0048] S2. Further, through the rotating column 419 fixed on the sliding plate 43, the short rotating bar 46 drives the warning gear 47 fixed on the front side of the main body 1 to rotate, the warning gear 47 drives the meshing warning lower rack 48 and the warning upper rack 49 to move, the warning lower rack 48 drives the long connecting rod 411 located on the right to move, and the warning upper rack 49 drives the short connecting rod 410 located on the left to move;

[0049] S3, the left telescopic rod 412 at the top is driven to move by the short connecting rod 410, the right telescopic rod 413 at the top is driven to move by the long connecting rod 411, the left telescopic rod 412 and the right telescopic rod 413 drive the interference rod 416 at the front side of the main body 1 to move, the interference rod 416 squeezes the bottom large spring rod 414, the bottom of the large spring rod 414 supports the fixed block 415, the interference rod 416 contacts the interference alarm 417, so that when the weight reaches a certain value, the interference rod 416 keeps contacting the interference alarm 417, so that the interference alarm 417 warns the user;

[0050] S4, the stirring upper rack 52 and the stirring lower rack 53 drive the stirring gear 54 to rotate, the stirring upper gear 54 drives the stirring rotating rod 55 to rotate, the stirring rotating rod 55 drives the large agitator 56 to rotate, the stirring short rack 58 drives the stirring pinion 57 to rotate, and the stirring pinion 57 drives the small agitator 59 to rotate, so that the fixed inside the main body 1 is quickly dissolved back into the liquid;

[0051] S5. With the increase of the weight of the carbon plate 3, the L plate 66 is driven to move downward, the L plate 66 drives the attachment rack 68 to move, the attachment rack 68 rotates with the attachment gear 67, the attachment gear 67 drives the left rotating rod 62 to rotate, the left rotating rod 62 drives the left gear 61 to rotate, the left gear 61 drives the left rack 63 to move, the left rack 63 drives the pointer 65 to move, and the pointer 65 moves on the surface of the ruler 64, thereby reflecting the amount of metal cations through the weight side of the carbon plate 3;

[0052] S6. The cleaning rack 78 is driven to move by the movement of the L plate 66, the cleaning rack 78 drives the cleaning gear 77 to rotate, the cleaning gear 77 drives the right rotating rod 72 to rotate, the right rotating rod 72 drives the right gear 73 to rotate, the right gear 73 drives the right rack 74 to move, the right rack 74 drives the attachment connecting rod 75 to move, the attachment connecting rod 75 drives the wiping block 76 to move, the wiping block 76 moves on the observation window plate 71, thereby maintaining the clarity of the inside of the observation window plate 71.

[0053] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A lithium-ion battery performance detection device, comprising a main body (1), characterized in that: The inner wall of the main body (1) is fixedly connected to a metal plate (2), the inner wall of the main body (1) is slidably connected to a carbon plate (3), and a warning structure (4) is arranged inside the main body (1), and the warning structure (4) comprises: A receiving plate (41), the receiving plate (41) is slidably connected to the inner wall of the main body (1), one end of a connecting plate (42) is hingedly connected to the bottom of the receiving plate (41), the other end of the connecting plate (42) is hingedly connected to a sliding plate (43), both sides of the sliding plate (43) are slidably connected to sliding rails (44), and the sliding rails (44) are fixedly connected to the inner wall of the main body (1); A small spring rod (45), one end of the small spring rod (45) is fixedly connected to the inner wall of the main body (1), the other end of the small spring rod (45) is fixedly connected to a sliding plate (43), a side of the sliding plate (43) close to the main body (1) is fixedly connected to a rotating column (419), and a short rotating bar (46) is rotatably connected to the inner wall of the main body (1); A warning gear (47), the front side of the main body (1) is rotatably connected to the warning gear (47), the warning gear (47) is fixedly connected to the surface of the short rotating bar (46), the warning gear (47) is meshed with a warning lower rack (48), the warning gear (47) is meshed with a warning upper rack (49), the right side of the warning lower rack (48) is fixedly connected to a long connecting rod (411), and the left side of the warning upper rack (49) is fixedly connected to a short connecting rod (410); The left telescopic rod (412) is hingedly connected to one end of the left telescopic rod (412) at the top of the short connecting rod (410), and one end of the right telescopic rod (413) is hingedly connected to the top of the long connecting rod (411). The other end of the left telescopic rod (412) is hingedly connected to a resisting rod (416), and the other end of the telescopic right telescopic rod (413) is hingedly connected to the resisting rod (416). The bottom of the resisting rod (416) is fixedly connected to a large spring rod (414), and the bottom of the large spring rod (414) is fixedly connected to a fixed block (415). ), the fixed block (415) is fixedly connected to the front side of the main body (1), the top of the abutment rod (416) abuts against a abutment alarm (417), the abutment alarm (417) is fixedly connected to the front side of the main body (1), the inner wall of the main body (1) is fixedly connected to a filter plate (418), the inner wall of the main body (1) is slidably connected to a rotating column (419), the surface of the rotating column (419) is fixedly connected to a sliding column (420), and the sliding column (420) is slidably connected in a sliding groove of a sliding groove column (421).

2. A lithium-ion battery performance detection device according to claim 1, characterized in that: A stirring structure (5) is arranged inside the main body (1), and the stirring structure (5) comprises a sealing plate (51). The sealing plate (51) is fixedly connected to the front side of the main body (1), an upper stirring rack (52) is fixedly connected to the right side of the short connecting rod (410), and a lower stirring rack (53) is fixedly connected to the left side of the long connecting rod (411), the upper stirring rack (52) is meshed with a large stirring gear (54), and the large stirring gear (54) is meshed with the lower stirring rack (53).

3. A lithium ion battery performance detection device according to claim 2, characterized in that: The large stirring gear (54) penetrates and is fixed on the stirring rotating rod (55), the stirring rotating rod (55) is rotatably connected to the inner wall of the main body (1), a large stirrer (56) is fixedly connected to the rear side of the stirring rotating rod (55), a small stirring gear (57) is slidably connected to the inner wall of the main body (1), the small stirring gear (57) is meshed with a short stirring rack (58), the short stirring rack (58) is fixedly connected to the left side of the receiving plate (41), and a small stirrer (59) is fixedly connected to the right side of the stirring gear (57).

4. A lithium ion battery performance detection device according to claim 3, characterized in that: An attachment structure (6) is provided inside the main body (1), and the attachment structure (6) comprises a left gear (61). The front side of the main body (1) is rotatably connected to the left gear (61). The inner wall of the main body (1) is rotatably connected to a left rotating rod (62). The surface of the left rotating rod (62) is fixedly connected to the left gear (61). The left gear (61) is meshed with a left rack (63). The left rack (63) is slidably connected to the front side of the main body (1). The front side of the main body (1) is fixedly connected to a ruler (64).

5. A lithium ion battery performance detection device according to claim 4, characterized in that: A pointer (65) is fixedly connected to the right side of the left rack (63); an L-plate (66) is slidably connected to the inner wall of the main body (1); an attachment gear (67) is rotatably connected to the inner wall of the main body (1); the attachment gear (67) is meshed with an attachment rack (68); and the rear side of the attachment rack (68) is fixedly connected to the L-plate (66).

6. A lithium-ion battery performance detection device according to claim 5, characterized in that: A cleaning structure (7) is provided inside the main body (1), the cleaning structure (7) comprising an observation window plate (71), the observation window plate (71) being fixedly connected to the front side of the main body (1), the inner wall of the main body (1) being rotatably connected to a right rotating rod (72), the surface of the right rotating rod (72) being fixedly connected to a right gear (73), the right gear (73) being meshed with a right rack (74), and the front side of the main body (1) being slidably connected to the right rack (74).

7. A lithium-ion battery performance detection device according to claim 6, characterized in that: The front side of the right rack (74) is fixedly connected to an attachment connecting rod (75), the attachment connecting rod (75) abuts against an observation window plate (71), the left side of the attachment connecting rod (75) is fixedly connected to a wiping block (76), the inner wall of the main body (1) is rotatably connected to a cleaning gear (77), the cleaning gear (77) is fixedly connected to the right rotating rod (72), the cleaning gear (77) is meshed with a cleaning rack (78), and the rear side of the cleaning rack (78) is fixedly connected to an L plate (66).

8. A method according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. First, the main body (1) is energized, and the metal plate (2) and the carbon plate (3) are energized. When the water in the electrolyte is electrolyzed and separated during the working process, it escapes through the pores, thereby causing the solute in the electrolyte to crystallize. The filter plate (418), the receiving plate (41), the connecting plate (42), the sliding plate (43), the slide rail (44) and the small spring rod (45) are used to detect the concentration of the electrolyte. S2. Further, the short rotating bar (46), the warning gear (47), the lower warning rack (48) and the upper warning rack (49) are coordinated, the lower warning rack (48) drives the long connecting rod (411) to move, and the upper warning rack (49) drives the short connecting rod (410) to move; S3, the left telescopic rod (412) is driven to move by the short connecting rod (410), the right telescopic rod (413) is driven to move by the long connecting rod (411), the left telescopic rod (412) and the right telescopic rod (413) drive the interference rod (416) to move, the interference rod (416) squeezes the large spring rod (414), and the interference rod (416) contacts the interference alarm (417), so that when the weight reaches a certain value, the interference alarm (417) warns the user; S4, cooperating with the stirring upper rack (52), the stirring lower rack (53), the stirring large gear (54), the stirring rotating rod (55) and the large agitator (56), the stirring short rack (58) drives the stirring small gear (57) to rotate, and the stirring small gear (57) drives the small agitator (59) to rotate, so that the fixed substance inside the main body (1) is quickly dissolved back into the liquid; S5. When the weight of the carbon plate (3) increases, the L plate (66) moves downward, and cooperates with the attached rack (68), the attached gear (67), the left rotating rod (62), the left gear (61), the left rack (63), the pointer (65) and the ruler (64), so that the amount of metal cations is reflected from the weight side of the carbon plate (3); S6. When the L plate (66) moves, the cleaning rack (78) moves, and cooperates with the cleaning rack (78), the cleaning gear (77), the right rotating rod (72), the right gear (73), the right rack (74), the attachment connecting rod (75) and the wiping block (76), the wiping block (76) moves on the observation window plate (71), thereby maintaining the clarity of the interior of the observation window plate (71).

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