A kind of all-solid-state soft-pack battery testing tool

Abstract

The utility model relates to the technical field of battery testing equipment, and in particular to a full-solid-state soft-pack battery testing fixture, comprising: an upper top plate, a lower bottom plate spaced apart from the upper top plate, a plurality of support rails disposed between the upper top plate and the lower bottom plate, and a movable plate disposed between the upper top plate and the lower bottom plate and movably connected to the support rails; a lifting device is provided on the side of the upper top plate away from the lower bottom plate, and the lifting device is used to realize the reciprocating movement of the movable plate along the support rails. By placing the solid-state soft-pack battery between the movable plate and the lower bottom plate, the movable plate, the battery, and the lower bottom plate can be fitted by adjusting the lifting device to form a parallel clamping of the solid-state soft-pack battery; the testing fixture can improve the force uniformity of the soft-pack battery, avoid local stress uneven rupture and internal short circuit of the solid electrolyte layer and the negative electrode layer, improve the consistency of the battery test, and is simple to operate, and the force application position is easy to adjust, making the test more accurate, simple, and safe.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing equipment, in particular to a full-solid-state soft-pack battery testing tool. Background Art

[0002] With the development of electric vehicles, solid-state soft-pack batteries have gradually become an important research and development project due to their advantages such as high energy density, high safety and good cycle life.

[0003] All-solid-state batteries based on sulfide solid electrolytes are prepared under high pressure. Generally speaking, as lithium is deposited on the negative electrode plate during the charging process, the volume of the all-solid-state battery may increase. In addition, lithium precipitation may tend to be uneven, such as in a free state where no pressure is applied to the all-solid-state battery. In the case of uneven lithium precipitation, the unevenness of lithium precipitation may be amplified as charging and discharging proceed, and the solid electrolyte and negative electrode layer may be partially broken due to internal uneven stress. This damage may cause internal short circuits. However, the unevenness of lithium precipitation can be solved by applying external pressure to the all-solid-state soft-pack battery.

[0004] The traditional fixture for soft-pack testing is two relatively arranged metal plates fixed by bolts. The small soft-pack battery is clamped between the two metal plates to apply pressure to the small soft-pack battery. Since multiple bolts are used for fastening, multiple bolts need to be tightened each time the battery is clamped, which is cumbersome to operate and there is inconsistency in the tightening torque of the screws. At the same time, the force application position (bolt tightening position) of the fixture cannot be adjusted, and the internal pole group of the soft-pack battery cannot be evenly stressed. It is difficult to ensure the consistency of the force on the pole pieces, and the purpose of close contact between the pole pieces cannot be achieved, which leads to problems such as great testing difficulty and inaccurate test results.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide an all-solid-state soft-pack battery testing tool, aiming to solve the problems that the existing soft-pack battery testing tool cannot achieve the purpose of close contact between pole pieces, and the testing is difficult and the test results are inaccurate.

[0007] The technical solution of the utility model is as follows:

[0008] A fully solid-state soft-pack battery testing fixture, comprising: an upper top plate, a lower bottom plate spaced apart from the upper top plate, a plurality of support rails disposed between the upper top plate and the lower bottom plate, and a movable plate disposed between the upper top plate and the lower bottom plate and movably connected to the support rails;

[0009] A lifting device is provided on the side of the upper top plate away from the lower bottom plate, and the lifting device is used to enable the movable plate to move back and forth along the supporting guide rail.

[0010] The all-solid-state soft-pack battery testing fixture, wherein the track direction of the support guide rail is perpendicular to the opposing surfaces of the upper top plate and the lower bottom plate.

[0011] The all-solid-state soft-pack battery testing fixture, wherein the upper top plate is provided with a plurality of first threaded countersunk holes on a side close to the lower bottom plate, the lower bottom plate is provided with a plurality of second threaded countersunk holes on a side close to the upper top plate, and the movable plate is provided with a plurality of threaded holes; the support guide rail is arranged through the threaded holes, and the two ends of the support guide rail are respectively connected to the first threaded countersunk holes and the second threaded countersunk holes.

[0012] The all-solid-state soft-pack battery testing fixture, wherein the lifting device includes a push rod that passes through the upper top plate and is threadedly connected to the upper top plate; one end of the push rod close to the movable plate is rotatably connected to the movable plate.

[0013] The all-solid-state soft-pack battery testing fixture, wherein a limiting member is provided on the side of the movable plate away from the lower base plate; and the end of the ejector rod close to the movable plate is rotatably connected to the limiting member.

[0014] The all-solid-state soft-pack battery testing tool, wherein the limiting member includes a base, and a limiting snap-in formed by the base extending away from the movable plate; an annular groove is provided at one end of the push rod close to the movable plate; and the annular groove is snap-connected with the limiting snap-in.

[0015] In the all-solid-state soft-pack battery testing tool, a rotating portion is provided at one end of the push rod away from the annular groove, and the rotating portion is provided with a rotating rod arranged perpendicularly to the push rod.

[0016] The all-solid-state soft-pack battery testing fixture, wherein a lifting reinforcement is provided on the side of the upper top plate away from the movable plate, the top rod is connected to the lifting reinforcement by a thread; and the rotating rod is movably connected to the rotating part.

[0017] The all-solid-state soft-pack battery testing tooling, wherein a first elastic insulating pad is provided on the side of the lower base plate close to the movable plate; a second elastic insulating pad is provided on the side of the movable plate close to the lower base plate; the thickness of the first elastic insulating pad is 0.3-2mm; the thickness of the second elastic insulating pad is 0.3-2mm.

[0018] The all-solid-state soft-pack battery testing fixture, wherein the upper top plate, the lower bottom plate and the movable plate are all rectangular in shape; the support rails include a first support rail, a second support rail, a third support rail and a fourth support rail; the first support rail, the second support rail, the third support rail and the fourth support rail are respectively arranged at the four corners of the rectangle.

[0019] Beneficial effects: The utility model provides a full solid-state soft-pack battery test fixture, including: an upper top plate, a lower bottom plate spaced apart from the upper top plate, a plurality of support rails arranged between the upper top plate and the lower bottom plate, and a movable plate arranged between the upper top plate and the lower bottom plate and movably connected to the support rails; a lifting device is provided on the side of the upper top plate away from the lower bottom plate, and the lifting device is used to realize the reciprocating movement of the movable plate along the support rails. The utility model places a solid-state soft-pack battery between the movable plate and the lower bottom plate, and by adjusting the lifting device, the movable plate, the battery, and the lower bottom plate can be fitted to form a parallel clamping of the solid-state soft-pack battery; the test fixture can improve the force uniformity of the soft-pack battery, avoid the local stress uneven cracking and internal short circuit of the solid electrolyte layer and the negative electrode layer, and improve the consistency of the battery test. At the same time, compared with the traditional test fixture using multiple bolts for fastening, the test fixture of the utility model is simple to operate and the force application position is easy to adjust, so it has good practicality and makes the test more accurate, simple and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an all-solid-state soft-pack battery testing tooling of the utility model;

[0021] Figure 2 It is a side view of a fully solid-state soft-pack battery testing tool of the utility model;

[0022] Figure 3 This is a top view of a fully solid-state soft-pack battery testing tooling of the utility model;

[0023] Explanation of the reference numerals in the accompanying drawings: upper top plate 10, lower bottom plate 20, supporting guide rail 30, movable plate 40, lifting device 50, top rod 51, annular groove 52, rotating part 53, rotating rod 54, limit member 60, base 61, limit snap-on 62, lifting reinforcement member 70, first elastic insulating pad 80, second elastic insulating pad 90, all-solid-state soft-pack battery 100. DETAILED DESCRIPTION

[0024] The utility model provides a fully solid-state soft-pack battery test tool. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0026] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0027] like Figures 1 to 3 As shown, the utility model provides an all-solid-state soft-pack battery test fixture, comprising: an upper top plate 10, a lower bottom plate 20 spaced apart from the upper top plate 10, a plurality of support rails 30 disposed between the upper top plate 10 and the lower bottom plate 20, and a movable plate 40 disposed between the upper top plate 10 and the lower bottom plate 20 and movably connected to the support rails 30;

[0028] A lifting device 50 is provided on a side of the upper top plate 10 away from the lower bottom plate 20 , and the lifting device 50 is used to enable the moving plate 40 to make a reciprocating motion along the supporting guide rail 30 .

[0029] In this embodiment, the movable plate 40 is arranged between the upper top plate 10 and the lower bottom plate 20, and the movable plate 40 performs reciprocating motion through the supporting guide rail 30 to ensure the parallelism of the movable plate 40 with the lower bottom plate 20; and, the lifting device 50 is adopted, compared with the traditional bolt fastening method, the operation of the test tool is simple and quick, and the use effect of the test tool is also improved.

[0030] Specifically, the utility model places the solid-state soft-pack battery between the movable plate 40 and the lower bottom plate 20, and adjusts the lifting device 50 to make the movable plate, the battery, and the lower bottom plate fit together, thereby forming a parallel clamp for the solid-state soft-pack battery; the test fixture can improve the force uniformity of the soft-pack battery, avoid local stress uneven rupture and internal short circuit of the solid electrolyte layer and the negative electrode layer, and improve the consistency of battery testing. At the same time, compared with the traditional test fixture that uses multiple bolts to fasten, the test fixture of the utility model is simple to operate and the force application position is easy to adjust, so it has good practicality and makes the test more accurate, simple and safe.

[0031] In some embodiments, the track direction of the support guide rail 30 is perpendicular to the opposing surfaces of the upper top plate 10 and the lower bottom plate 20. By arranging the support guide rail 30 between the upper top plate 10 and the lower bottom plate 20, and its track direction is perpendicular to the opposing surfaces of the upper top plate 1 and the lower bottom plate 20, that is, the track direction of the support guide rail is perpendicular to the clamping surface of the lower top plate, the movable plate 40 can maintain a parallel relationship with the lower bottom plate 20 when making reciprocating motion along the support guide rail 30, thereby ensuring the uniformity of force on the all-solid-state soft-pack battery.

[0032] In some embodiments, the upper plate 10 is provided with a plurality of first threaded countersunk holes on a side close to the lower bottom plate 20, the lower bottom plate 20 is provided with a plurality of second threaded countersunk holes on a side close to the upper plate 10, and the movable plate 40 is provided with a plurality of threaded holes; the support guide rail 30 is arranged through the threaded holes, and the two ends of the support guide rail 30 are respectively connected to the first threaded countersunk holes and the second threaded countersunk holes.

[0033] Specifically, the two ends of the support guide rail 30 are respectively connected to the first threaded countersunk hole and the second threaded countersunk hole, so that the upper top plate 10 and the lower bottom plate 20 form an overhead layer, and the movable plate 40 is sleeved on the support guide rail 30 through the threaded hole and maintains a sliding connection, and the reciprocating motion of the movable plate 40 along the support guide rail 30 is utilized to clamp the solid-state soft-pack battery.

[0034] In some embodiments, the lifting device 50 includes a push rod 51 that penetrates the upper top plate 10 and is threadedly connected to the upper top plate 10; one end of the push rod 51 close to the moving plate 40 is rotatably connected to the moving plate 40. By utilizing the threaded connection relationship between the push rod 51 and the upper top plate 10 and the rotatable connection relationship between the push rod 51 and the moving plate, the push rod 51 can be used to move up and down relative to the upper top plate 10 to control the reciprocating motion of the moving plate 40, so as to clamp the solid-state soft battery by the moving plate 40 and the lower bottom plate 20.

[0035] Specifically, the main functions of the upper top plate 10, the lower bottom plate 20 and the support guide rail 30 are to fix the movable plate 40. The top rod 51 threadedly connected to the upper top plate 10 enables the movable plate 40 to reciprocate along the support guide rail 30 (to achieve rising and falling movements relative to the lower bottom plate), and ensures the parallelism of the movable plate 40 and the lower bottom plate 20.

[0036] In some embodiments, a stopper 60 is provided on the side of the movable plate 40 away from the lower base plate 20; and one end of the push rod 51 close to the movable plate 40 is rotatably connected to the stopper 60. The stopper 60 can be used to realize the rotatable connection between the push rod 51 and the movable plate 40, and the relative movement of the push rod 51 can be used to realize the control of the movable plate 40 to make an upward movement or a downward movement relative to the lower base plate 20.

[0037] In some embodiments, the limiting member 60 includes a base 61 and a limiting snap-in 62 extending from the base 61 in a direction away from the movable plate 40 ; an annular groove 52 is provided at one end of the top rod 51 close to the movable plate 40 ; the annular groove 52 is snap-connected with the limiting snap-in 62 .

[0038] In some embodiments, the limit stopper 62 includes two parallel and spaced support walls extending from the base 61 away from the movable plate 40 and a stop bar extending from the two support walls toward the center position; the stop bar is used to form a snap-fit ​​structure with the annular groove, so that the annular groove 52 can only form a rotational connection with the limit stopper 62, thereby achieving the purpose of controlling the movable plate 40 to make reciprocating motion along the support guide rail 30 by using the push rod 51.

[0039] In some embodiments, a rotating portion 53 is provided at one end of the push rod 51 away from the annular groove 52, and the rotating portion 53 is provided with a rotating rod 54 vertically arranged with the push rod 51. The rotating rod 54 can be used to drive the push rod 51 and the upper top plate 10 to rotate more effortlessly, so that the push rod 51 rises or falls, and then drives the moving plate 40 to rise or fall.

[0040] Specifically, the push rod 51 is provided with a fine external thread at a position between the annular groove 52 and the rotating portion 53, and a fine threaded hole is provided at a middle position of the upper top plate 10, so that the fine external thread on the push rod 51 is engaged with the fine threaded hole of the upper top plate 10, that is, the two are matched with each other, thereby achieving more precise control of the displacement of the movable plate 40.

[0041] In some embodiments, a lifting reinforcement member 70 is provided on the side of the upper top plate 10 away from the movable plate 40, and the top rod 51 is connected to the lifting reinforcement member 70 by threads; and the rotating rod 54 is movably connected to the rotating part 53. The use of the lifting reinforcement member 70 can increase the service life of the top rod 51 and the upper top plate 10, and the use of the movable rotating rod 54 can make it easier to adjust the length of the lever at the force application position, making the operation more labor-saving and convenient, thereby improving the use effect of the test fixture.

[0042] In some embodiments, a first elastic insulating pad 80 is provided on the side of the lower bottom plate 20 close to the movable plate 40; a second elastic insulating pad 90 is provided on the side of the movable plate 40 close to the lower bottom plate 20; the thickness of the first elastic insulating pad 80 is 0.3-2 mm; the thickness of the second elastic insulating pad 90 is 0.3-2 mm. An all-solid-state soft-pack battery 100 is placed between the first elastic insulating pad 80 and the second elastic insulating pad 90, and then the lifting device is adjusted to fit the movable plate, the battery, and the lower bottom plate, thereby forming a uniform pressure clamping of the solid-state soft-pack battery. The elastic insulating pad can also further increase the force uniformity of the soft-pack battery, and play a role of buffering and insulation.

[0043] In some embodiments, the upper top plate 10, the lower bottom plate 20 and the movable plate 40 are all rectangular in shape and have similar cross-sectional sizes; the support rail 30 includes a first support rail, a second support rail, a third support rail and a fourth support rail; the first support rail, the second support rail, the third support rail and the fourth support rail are respectively arranged at the four corners of the rectangle, and the use of four support rails can ensure parallel movement of the movable plate.

[0044] In summary, the utility model provides a kind of all-solid-state soft-pack battery test fixture, including: an upper top plate, a lower bottom plate spaced apart from the upper top plate, a plurality of support rails arranged between the upper top plate and the lower bottom plate, and a movable plate arranged between the upper top plate and the lower bottom plate and movably connected to the support rails; a lifting device is provided on the side of the upper top plate away from the lower bottom plate, and the lifting device is used to realize the reciprocating movement of the movable plate along the support rails. The utility model places the solid-state soft-pack battery between the movable plate and the lower bottom plate, and by adjusting the lifting device, the movable plate, the battery, and the lower bottom plate can be fitted to form a parallel clamping of the solid-state soft-pack battery; the test fixture can improve the force uniformity of the soft-pack battery, avoid the local stress uneven cracking and internal short circuit of the solid electrolyte layer and the negative electrode layer, and improve the consistency of the battery test. At the same time, compared with the traditional test fixture using multiple bolts to tighten, the test fixture of the utility model is simple to operate and the force position is easy to adjust, so it has good practicality and makes the test more accurate, simple and safe.

[0045] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A fully solid-state soft-pack battery testing tool, characterized in that: include: An upper top plate, a lower bottom plate spaced apart from the upper top plate, a plurality of support rails disposed between the upper top plate and the lower bottom plate, and a movable plate disposed between the upper top plate and the lower bottom plate and movably connected to the support rails; A lifting device is provided on the side of the upper top plate away from the lower bottom plate, and the lifting device is used to enable the movable plate to make a reciprocating motion along the supporting guide rail.

2. The all-solid-state soft-pack battery testing tool according to claim 1, characterized in that: The track direction of the support guide rail is perpendicular to the opposite surfaces of the upper top plate and the lower bottom plate.

3. The all-solid-state soft-pack battery testing tool according to claim 1, characterized in that: The upper plate is provided with a plurality of first threaded countersunk holes on one side close to the lower bottom plate, the lower bottom plate is provided with a plurality of second threaded countersunk holes on one side close to the upper plate, and the movable plate is provided with a plurality of threaded holes; the support guide rail is arranged through the threaded holes, and the two ends of the support guide rail are respectively connected to the first threaded countersunk holes and the second threaded countersunk holes.

4. The all-solid-state soft-pack battery testing tool according to claim 1, characterized in that: The lifting device comprises a push rod penetrating the upper top plate and being threadedly connected to the upper top plate; one end of the push rod close to the moving plate is rotatably connected to the moving plate.

5. The all-solid-state soft-pack battery testing tool according to claim 4, characterized in that: A limiting piece is provided on one side of the movable plate away from the lower base plate; and one end of the push rod close to the movable plate is rotatably connected to the limiting piece.

6. The all-solid-state soft-pack battery testing tool according to claim 5, characterized in that: The limiting member includes a base, and a limiting snap-in formed by the base extending in a direction away from the movable plate; an annular groove is provided at one end of the push rod close to the movable plate; and the annular groove is snap-fitted with the limiting snap-in.

7. The all-solid-state soft-pack battery testing tool according to claim 6, characterized in that: A rotating portion is provided at one end of the push rod away from the annular groove, and the rotating portion is provided with a rotating rod vertically arranged with the push rod.

8. The all-solid-state soft-pack battery testing tool according to claim 7, characterized in that: A lifting reinforcement piece is provided on the side of the upper top plate away from the movable plate, and the top rod is connected to the lifting reinforcement piece through threads; and the rotating rod is movably connected to the rotating part.

9. The all-solid-state soft-pack battery testing tool according to claim 1, characterized in that: A first elastic insulating pad is provided on one side of the lower base plate close to the movable plate; a second elastic insulating pad is provided on one side of the movable plate close to the lower base plate; the thickness of the first elastic insulating pad is 0.3-2mm; the thickness of the second elastic insulating pad is 0.3-2mm.

10. The all-solid-state soft-pack battery testing tool according to claim 1, characterized in that: The upper top plate, the lower bottom plate and the movable plate are all rectangular in shape; the support rails include a first support rail, a second support rail, a third support rail and a fourth support rail; the first support rail, the second support rail, the third support rail and the fourth support rail are respectively arranged at the four corners of the rectangle.

Images