Test fixture and test equipment

Abstract

The invention provides a test fixture and test equipment, and belongs to the technical field of battery test. The test fixture comprises a battery limiting box, a connecting piece, a first connecting assembly and a second connecting assembly, the top of the battery limiting box is provided with a test window, and the battery limiting box is used for accommodating a to-be-tested battery and limiting and fixing the to-be-tested battery; a to-be-tested pole of the to-be-tested battery is located in the test window; the connecting sheet is used for welding and connecting a to-be-tested pole; the first connecting assembly is positioned above the battery limiting box and is connected with the connecting sheet; the second connecting assembly is positioned below the battery limiting box and is connected with the bottom of the battery limiting box; the first connecting assembly and the second connecting assembly are used for being connected with a tension mechanism. According to the test fixture, the first connecting assembly applies an upward pulling force to the connecting sheet, the connecting sheet transmits the pulling force to the to-be-tested pole, and the second connecting assembly applies a downward pulling force to the battery limiting box, so that the pulling force test of the to-be-tested pole of the to-be-tested battery can be carried out.

Description

Technical Field

[0001] The present application relates to the technical field of battery testing, and in particular to a testing fixture and testing equipment. Background Art

[0002] The positive and negative poles of the square aluminum shell battery will be led out at the cover plate for subsequent welding of the integrated busbar (Cells Contact System, CCS) components or other electrical connectors. In order to ensure that the poles do not fail due to cracking and leakage under various operating conditions, it is necessary to conduct a preliminary test on the tensile strength of the poles to clarify the usage limit of the poles under the action of tensile force.

[0003] However, the related art lacks a fixture and a device suitable for performing a pole pull-out test on large-sized square aluminum shell batteries. Summary of the invention

[0004] The present application provides a test fixture and a test device, which can be suitable for performing a pole pull-out test on large-sized square batteries.

[0005] The technical solution is as follows:

[0006] In one aspect, a test fixture is provided, the test fixture comprising: a battery limit box, a connecting piece, a first connecting component and a second connecting component;

[0007] A test window is provided on the top of the battery limit box, and the battery limit box is used to accommodate the battery to be tested and to limit and fix the battery to be tested; the pole to be tested of the battery to be tested is located in the test window;

[0008] The connecting piece is used for welding and connecting the pole to be tested;

[0009] The first connecting component is located above the battery limiting box and connected to the connecting piece; the second connecting component is located below the battery limiting box and connected to the bottom of the battery limiting box;

[0010] The first connecting assembly and the second connecting assembly are respectively used to connect the tension mechanism.

[0011] In some embodiments, the first connection assembly includes a first connection seat, a first connection column and a first connection plate;

[0012] The top of the first connecting seat is used to connect the tension mechanism, the bottom of the first connecting seat is provided with a first limiting groove, the top of the first connecting column is plug-connected with the first limiting groove; the first connecting plate is connected to the bottom of the first connecting column, and the axis of the first connecting column passes through the geometric center of the first connecting plate;

[0013] The first connecting plate is parallel to and connected to the connecting piece.

[0014] In some embodiments, the connecting piece is provided with two vertically penetrating first connecting holes, and the two first connecting holes are symmetrically arranged on both sides of the pole to be tested;

[0015] The first connecting plate is provided with two second connecting holes which are vertically penetrated, and the positions of the second connecting holes correspond to the positions of the first connecting holes;

[0016] The two first connection holes and the two second connection holes are fastened and connected correspondingly.

[0017] In some embodiments, the test fixture further comprises two first connection screws and two first connection nuts;

[0018] The two first connection screws pass through the first connection hole and the second connection hole in sequence from bottom to top respectively; the two first connection nuts are located on the top surface of the first connection plate;

[0019] Each of the first connecting screws is threadedly connected to one of the first connecting nuts to fasten the first connecting plate and the connecting sheet.

[0020] In some embodiments, the connecting piece is provided with two first folding portions, the two first folding portions are located at two opposite edges of the connecting piece, and the two first folding portions are symmetrical along the positions of the pole to be tested;

[0021] The first connecting plate is provided with two second folding portions, and the positions of the second folding portions correspond to the positions of the first folding portions;

[0022] The two first folded portions and the two second folded portions are pin-connected respectively.

[0023] In some embodiments, the first folding portion is folded upward, and the second folding portion is folded downward;

[0024] The first folded portion is provided with a first pin hole that passes horizontally, and the second folded portion is provided with a second pin hole that passes horizontally; the first pin hole and the second pin hole are pinned together with their axes coinciding, and the axes of the first pin hole and the second pin hole intersect with the axis of the pole to be tested.

[0025] In some embodiments, the test fixture further includes a long pin, and the long pin passes through the two first pin holes and the two second pin holes in a horizontal direction.

[0026] In some embodiments, the battery limiting box includes a bottom plate, a top plate, two first side plates, and two second side plates;

[0027] The bottom plate is located at the bottom of the battery to be tested, the top plate is located at the top of the battery to be tested, the two first side plates are respectively located on the two narrower sides of the battery to be tested, and the two second side plates are respectively located on the two wider sides of the battery to be tested;

[0028] The bottom edges of the two first side panels and the bottom edges of the two second side panels are respectively connected to the edges of the bottom panel; the top panel is respectively connected to the top edges of the two second side panels, and the top panel and the top edges of the two first side panels are arranged at intervals, so that two test windows are formed on the top of the battery limit box, and the positions of the two test windows correspond to the positions of the two poles to be tested of the battery to be tested.

[0029] In some embodiments, the battery limit box is also provided with at least one movable positioning member, and the at least one movable positioning member is located on at least one of the bottom plate, the first side plate and the second side plate, and the at least one movable positioning member abuts against the battery to be tested, and the at least one movable positioning member is used to adjust the internal space of the battery limit box to accommodate batteries to be tested of different sizes.

[0030] On the other hand, a testing device is provided, the testing device comprising the testing fixture described in the present application, and a tension mechanism;

[0031] The pulling mechanism comprises a supporting frame and a movable platform, wherein the movable platform is movably connected to the supporting frame and can move in a vertical direction;

[0032] The test fixture is located on the movable platform, the second connecting component is connected to the top surface of the movable platform, the first connecting component is connected to the top beam of the support frame, and when the movable platform moves downward in the vertical direction, the top beam performs a tensile test on the pole to be tested through the first connecting component.

[0033] In some embodiments, the testing device further comprises an inflation testing machine;

[0034] The battery to be tested after the tensile test is connected to the inflation test machine, and the inflation test machine is used to test whether the battery to be tested after the tensile test has leakage.

[0035] The beneficial effects of the technical solution provided by this application include at least:

[0036] The test fixture of the present application has a battery limit box with a test window, and the battery limit box is used to accommodate the battery to be tested. The pole to be tested of the battery to be tested is located in the test window, and the connecting piece is welded to the pole to be tested. The first connecting component is located above the battery limit box and connected to the connecting piece, and the second connecting component is located below the battery limit box and connected to the bottom of the battery limit box. The first connecting component and the second connecting component are respectively used to connect a tension mechanism. When the tension mechanism is started, the first connecting component applies an upward tension to the connecting piece, and the connecting piece transfers the tension to the pole to be tested. The second connecting component applies a downward tension to the battery limit box, thereby enabling a tension test of the pole to be tested of the battery to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a schematic diagram of the structure of a test fixture provided in an embodiment of the present application;

[0039] Figure 2 is a schematic diagram of the structure of a first connection component provided in an embodiment of the present application;

[0040] Figure 3 is a partial structural diagram of a second connection component provided in an embodiment of the present application;

[0041] Figure 4 It is a structural schematic diagram of a battery limit box provided in an embodiment of the present application;

[0042] Figure 5 is a schematic diagram of the structure of the movable positioning member provided in the embodiment of the present application;

[0043] Figure 6 is a schematic diagram of the structure of the test device provided in the embodiment of the present application;

[0044] Figure 7 It is a schematic diagram of the structure of a testing device provided in another embodiment of the present application.

[0045] The reference numerals in the figures represent respectively:

[0046] 1. Battery limit box;

[0047] 11. Test window; 12. Bottom plate; 13. Top plate; 14. First side plate; 15. Second side plate; 16. Movable positioning member; 17. Movable screw rod; 18. Movable screw hole;

[0048] 2. Connecting piece;

[0049] 21. first connecting hole; 22. first folding portion; 221. first pin hole;

[0050] 3. A first connection component;

[0051] 31. first connecting seat; 311. first limiting groove; 312. first connecting pin; 313. third pin hole; 32. first connecting column; 321. fifth pin hole; 322. first screw hole; 33. first connecting plate; 331. second connecting hole; 332. second folding portion; 3321. second pin hole; 333. second screw hole; 34. second connecting screw;

[0052] 4. A second connection component;

[0053] 41, second connecting seat; 411, second limiting groove; 412, second connecting pin; 413, fourth pin hole; 42, second connecting column; 421, sixth pin hole; 43, third connecting screw;

[0054] 5. First connecting screw;

[0055] 6. First connecting nut;

[0056] 7. Long pins;

[0057] 100. Battery to be tested;

[0058] 1001, pole to be tested;

[0059] 200. Test fixture;

[0060] 300, tension mechanism;

[0061] 3001, support frame;

[0062] 3002, activity platform;

[0063] 400. Inflatable testing machine. DETAILED DESCRIPTION

[0064] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0065] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0066] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0067] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0068] On the one hand, combined with Figure 1 As shown, this embodiment provides a test fixture 200 , which includes: a battery limit box 1 , a connecting piece 2 , a first connecting component 3 and a second connecting component 4 .

[0069] A test window 11 is provided on the top of the battery limit box 1, and the battery limit box 1 is used to accommodate the battery 100 to be tested and to limit and fix the battery 100 to be tested; the pole 1001 to be tested of the battery 100 to be tested is located in the test window 11. The connecting piece 2 is used to weld and connect the pole 1001 to be tested.

[0070] The first connecting assembly 3 is located above the battery limiting box 1 and connected to the connecting piece 2; the second connecting assembly 4 is located below the battery limiting box 1 and connected to the bottom of the battery limiting box 1. The first connecting assembly 3 and the second connecting assembly 4 are used to connect the tension mechanism 300 respectively.

[0071] The test fixture 200 of this embodiment, the battery limit box 1 has a test window 11, the battery limit box 1 is used to accommodate the battery 100 to be tested, the pole 1001 to be tested of the battery 100 to be tested is located in the test window 11, the connecting piece 2 is welded to the pole 1001 to be tested, the first connecting component 3 is located above the battery limit box 1 and connected to the connecting piece 2, the second connecting component 4 is located below the battery limit box 1 and connected to the bottom of the battery limit box 1, the first connecting component 3 and the second connecting component 4 are respectively used to connect the tension mechanism 300, when the tension mechanism 300 is started, the first connecting component 3 applies an upward tension to the connecting piece 2, the connecting piece 2 transfers the tension to the pole 1001 to be tested, and the second connecting component 4 applies a downward tension to the battery limit box 1, so that the tension test of the pole 1001 to be tested of the battery 100 to be tested can be performed.

[0072] In some possible implementations, the battery limiting box 1 can be used to accommodate batteries 100 to be tested of different shapes and sizes, wherein the batteries 100 to be tested include but are not limited to square batteries, cylindrical batteries, and the like.

[0073] Exemplarily, the battery limiting box 1 is in a rectangular shape, used to accommodate square batteries, and can limit and fix square batteries. The top of the battery limiting box 1 has two test windows 11, and the two test windows 11 correspond to the positive pole and the negative pole of the battery respectively.

[0074] In some possible implementations, such as Figure 1 As shown, the first connecting component 3 and the second connecting component 4 are respectively located in the vertical direction of the pole 1001 to be tested. When the tensile test is performed, the force applied by the first connecting component 3 and the second connecting component 4 to the pole 1001 to be tested is distributed along the vertical direction, so as to prevent the pole 1001 to be tested from being subjected to tilting and torsional force, thereby interfering with the tensile test effect of the battery 100 to be tested.

[0075] Exemplarily, the first connecting component 3 is connected to the top of the pole to be tested 1001 through the connecting plate 2, the second connecting component 4 is detachably connected to the bottom of the battery limit box 1, and the bottom of the battery limit box 1 has at least two connecting positions, and different connecting positions can correspond to different vertical positions of the pole to be tested 1001, so that when performing tensile tests on different poles to be tested 1001, it can be ensured that the first connecting component 3, the pole to be tested 1001 and the second connecting component 4 remain in the same vertical direction.

[0076] In some other possible implementations, the tension mechanism 300 may be a tension tester. The first connection assembly 3 and the second connection assembly 4 are connected to the tension tester, and the force of the tension tester can be transmitted to the connecting piece 2 and the battery limit box 1, and then the connecting piece 2 transmits the force to the pole 1001 to be tested, and the battery limit box 1 transmits the force to the battery 100 to be tested.

[0077] Combination Figure 2 As shown, in some embodiments, the first connecting assembly 3 includes a first connecting seat 31 , a first connecting column 32 and a first connecting plate 33 .

[0078] The top of the first connecting seat 31 is used to connect the tension mechanism 300, and the bottom of the first connecting seat 31 is provided with a first limiting groove 311, and the top of the first connecting column 32 is plugged into the first limiting groove 311; the first connecting plate 33 is connected to the bottom end of the first connecting column 32, and the axis of the first connecting column 32 passes through the geometric center of the first connecting plate 33.

[0079] The first connecting plate 33 is parallel to and connected to the connecting piece 2 .

[0080] Through the above arrangement, the first connecting assembly 3 can realize reliable connection between the tension mechanism 300 and the connecting piece 2 by using the first connecting seat 31, the first connecting column 32 and the first connecting plate 33, ensuring reliable connection between the pole 1001 to be tested and the tension mechanism 300.

[0081] Among them, the first connecting column 32 is plug-connected with the first limiting groove 311 of the first connecting seat 31, with a simple structure and very convenient connection and disassembly, which is beneficial to improving the assembly and disassembly efficiency of the test fixture 200 and the tension mechanism 300, thereby improving the tension test efficiency of the battery 100 to be tested.

[0082] The axis of the first connecting column 32 passes through the geometric center of the first connecting plate 33, which can ensure that the force transmitted from the connecting seat to the first connecting plate 33 can act on the geometric center of the first connecting plate 33, and then be transmitted to the connecting piece 2 in parallel by the first connecting plate 33, ensuring that the pulling force of the connecting piece 2 on the pole 1001 to be tested remains vertical, thereby improving the reliability and accuracy of the tensile test of the pole 1001 to be tested.

[0083] The geometric center of the first connecting plate 33 needs to be determined according to the shape of the first connecting plate 33. For example, if the first connecting plate 33 is a rectangular plate, the geometric center of the first connecting plate 33 is the intersection of two diagonals of the first connecting plate 33. For another example, if the first connecting plate 33 is a circular plate, the geometric center of the first connecting plate 33 is the center of the circle of the first connecting plate 33.

[0084] In some possible implementations, reference Figure 2As shown, the first connecting seat 31 is also provided with a horizontally placed third pin hole 313, and the first connecting column 32 is provided with a fifth pin hole 321 corresponding to the third pin hole 313. After the first connecting column 32 is inserted into the first limiting groove 311, the fifth pin hole 321 is aligned with the third pin hole 313, and the first connecting pin 312 is passed through the third pin hole 313 and the fifth pin hole 321 to limit and fix the first connecting column 32 in the first limiting groove 311, thereby realizing a simple and reliable connection.

[0085] In some possible implementations, reference Figure 2 As shown, a first screw hole 322 is provided at the bottom end of the first connecting column 32, and a second screw hole 333 is provided at the geometric center of the first connecting plate 33. The second connecting screw 34 of the first connecting assembly 3 passes through the second screw hole 333 from bottom to top and is threadedly connected with the first screw hole 322, thereby connecting the first connecting plate 33 to the bottom end of the first connecting column 32.

[0086] Exemplarily, a concave avoidance portion is provided in the middle of the connecting plate 2, and the position of the concave avoidance portion corresponds to the position of the second connecting screw 34. The concave avoidance portion is used to accommodate the screw head of the second connecting screw 34, so that the top surface of the connecting plate 2 and the bottom surface of the first connecting plate 33 can be completely fitted.

[0087] Combination Figure 2 As shown, in some embodiments, the connecting piece 2 is provided with two vertically penetrating first connecting holes 21 , and the two first connecting holes 21 are symmetrically arranged on both sides of the pole 1001 to be tested.

[0088] The first connecting plate 33 is provided with two vertically penetrating second connecting holes 331 , and the positions of the second connecting holes 331 correspond to the positions of the first connecting holes 21 ; the two first connecting holes 21 and the two second connecting holes 331 are fastened and connected respectively and correspondingly.

[0089] Through the above arrangement, the connecting piece 2 can be connected up and down by using the two vertically penetrating first connecting holes 21 and the two vertically penetrating second connecting holes 331 of the first connecting plate 33 in a one-to-one correspondence. The positions of the two first connecting holes 21 and the two second connecting holes 331 are symmetrically arranged along the pole 1001 to be tested, which can ensure that the first connecting plate 33 and the connecting piece 2 are reliably connected in the vertical direction, and the force exerted by the first connecting plate 33 on the connecting piece 2 is also in the vertical direction.

[0090] In some possible implementations, combined with Figure 2 As shown, the two second connection holes 331 are both long slot holes (or waist-shaped holes), and the extension lines of the long slot holes pass through the geometric center of the first connection plate 33 respectively.

[0091] By designing the second connection hole 331 as a long slot hole, the first connection plate 33 can adapt to connect the connection pieces 2 of different sizes. When the sizes of the connection pieces 2 are different, the spacing between the two first connection holes 21 is different. At this time, the different positions of the second connection hole 331 can be used to connect with the two first connection holes 21 respectively, which is conducive to improving the working adaptability of the first connection plate 33 and the first connection assembly 3 to which it belongs.

[0092] Combination Figure 2 As shown, in some embodiments, the test fixture 200 further includes two first connection screws 5 and two first connection nuts 6 .

[0093] The two first connecting screws 5 pass through the first connecting hole 21 and the second connecting hole 331 from bottom to top respectively; the two first connecting nuts 6 are located on the top surface of the first connecting plate 33; each first connecting screw 5 is threadedly connected with a first connecting nut 6 to fasten the first connecting plate 33 and the connecting sheet 2 together.

[0094] Through the above arrangement, the first connecting screw 5 and the first connecting nut 6 can be used to achieve a detachable connection between the first connecting plate 33 and the connecting piece 2. The structure is simple and reliable, which can improve the assembly and disassembly efficiency of the two and improve the working efficiency of the tensile test of the pole 1001 to be tested.

[0095] In some possible implementations, see Figure 2 As shown, before the connection piece 2 is welded to the pole 1001 to be tested, two first connection screws 5 are respectively inserted into the two first connection holes 21 from bottom to top, and then the connection piece 2 is welded to the pole 1001 to be tested.

[0096] Combination Figure 3 As shown, in some embodiments, the connecting piece 2 is provided with two first folded portions 22 , the two first folded portions 22 are located at two opposite edges of the connecting piece 2 , and the two first folded portions 22 are symmetrical along the positions of the pole 1001 to be tested.

[0097] The first connecting plate 33 is provided with two second folding portions 332 , and the positions of the second folding portions 332 correspond to the positions of the first folding portions 22 ; the two first folding portions 22 and the two second folding portions 332 are pin-connected respectively.

[0098] Through the above arrangement, the connecting piece 2 can be connected with the two second folding parts 332 of the first connecting plate 33 by means of upper and lower pins corresponding to each other by means of the two first folding parts 22. The positions of the two first folding parts 22 and the two second folding parts 332 are symmetrically arranged along the pole 1001 to be tested, thereby ensuring that the first connecting plate 33 and the connecting piece 2 are reliably connected in the vertical direction, and the force exerted by the first connecting plate 33 on the connecting piece 2 is also in the vertical direction.

[0099] Combination Figure 3 As shown, in some embodiments, the first folded portion 22 is folded upward, and the second folded portion 332 is folded downward.

[0100] The first folded portion 22 is provided with a first pin hole 221 extending horizontally therethrough, and the second folded portion 332 is provided with a second pin hole 3321 extending horizontally therethrough; the first pin hole 221 and the second pin hole 3321 are pinned together with their axes coinciding, and the axes of the first pin hole 221 and the second pin hole 3321 intersect with the axis of the pole 1001 to be tested.

[0101] Through the above arrangement, the first folding portion 22 and the second folding portion 332 are folded up and down correspondingly and overlap in the middle. When the first pin hole 221 and the second pin hole 3321 are aligned and overlapped, the first pin hole 221 and the second pin hole 3321 can be pinned together, with a simple structure and high assembly and disassembly efficiency.

[0102] Combination Figure 3 As shown, in some embodiments, the test fixture 200 further includes a long pin 7, and the long pin 7 passes through the two first pin holes 221 and the two second pin holes 3321 along the horizontal direction.

[0103] Through the above arrangement, a long pin 7 is used to penetrate the two first pin holes 221 and the two second pin holes 3321 at the same time, which further reduces the difficulty of assembling and disassembling the first connecting plate 33 and the connecting sheet 2.

[0104] Combination Figure 4 As shown, in some embodiments, the second connection assembly 4 includes a second connection seat 41 and a second connection column 42. The bottom of the second connection seat 41 is used to connect the tension mechanism 300, the top of the second connection seat 41 is provided with a second limiting groove 411, and the bottom end of the second connection column 42 is plug-connected with the second limiting groove 411; the top of the first connection column 32 is connected to the bottom plate 12 of the battery limiting box 1, and the axis of the second connection column 42 coincides with the axis of the pole 1001 to be tested.

[0105] Through the above arrangement, the second connecting assembly 4 can utilize the second connecting seat 41 and the second connecting column 42 to achieve reliable connection between the tension mechanism 300 and the battery limiting box 1, ensuring that the battery limiting box 1 and the tension mechanism 300 can be reliably connected.

[0106] Among them, the second connecting column 42 is plug-connected with the second limiting groove 411 of the second connecting seat 41, with a simple structure and very convenient connection and disassembly, which is beneficial to improving the assembly and disassembly efficiency of the test fixture 200 and the tension mechanism 300, thereby improving the tension test efficiency of the battery 100 to be tested.

[0107] In some possible implementations, reference Figure 4As shown, the second connecting seat 41 is also provided with a horizontally placed fourth pin hole 413, and the second connecting column 42 is provided with a sixth pin hole 421 corresponding to the fourth pin hole 413. After the second connecting column 42 is inserted into the second limiting groove 411, the fourth pin hole 413 and the sixth pin hole 421 are aligned, and the second connecting pin 412 is passed through the fourth pin hole 413 and the sixth pin hole 421 to limit and fix the second connecting column 42 in the second limiting groove 411, thereby realizing a simple and reliable connection.

[0108] In some possible implementations, reference Figure 4 As shown, a third screw hole is provided at the top of the second connecting column 42, and the third connecting screw 43 of the second connecting assembly 4 passes through the bottom plate 12 of the battery limit box 1 from bottom to top and is threadedly connected to the third screw hole, thereby connecting the battery limit box 1 to the top of the second connecting column 42.

[0109] Combination Figure 4 As shown, in some embodiments, the battery limiting box 1 includes a bottom plate 12 , a top plate 13 , two first side plates 14 and two second side plates 15 .

[0110] The bottom plate 12 is located at the bottom of the battery 100 to be tested, the top plate 13 is located at the top of the battery 100 to be tested, the two first side plates 14 are respectively located on the two narrower sides of the battery 100 to be tested, and the two second side plates 15 are respectively located on the two wider sides of the battery 100 to be tested.

[0111] The bottom edges of the two first side plates 14 and the bottom edges of the two second side plates 15 are respectively connected to the edges of the bottom plate 12; the top plate 13 is respectively connected to the top edges of the two second side plates 15, and the top edges of the top plate 13 and the two first side plates 14 are arranged at intervals, so that two test windows 11 are formed on the top of the battery limit box 1, and the positions of the two test windows 11 correspond to the positions of the two poles 1001 to be tested of the battery 100 to be tested.

[0112] Through the above arrangement, the battery limit box 1 is a rectangular structure surrounded by a bottom plate 12, a top plate 13, two first side plates 14 and two second side plates 15, which can be used to accommodate and limit and fix the rectangular battery 100 to be tested, and no matter the size of the battery 100 to be tested, the battery limit box 1 of this embodiment can be used for limit and fixation, so that the test fixture 200 can be suitable for tensile testing of different models of rectangular batteries 100 to be tested.

[0113] Combination Figure 4As shown, in some embodiments, the battery limit box 1 is further provided with at least one movable positioning member 16, and the at least one movable positioning member 16 is located on at least one of the bottom plate 12, the first side plate 14 and the second side plate 15, and the at least one movable positioning member 16 is abutted against the battery to be tested 100, and the at least one movable positioning member 16 is used to adjust the internal space of the battery limit box 1 to accommodate batteries 100 to be tested of different sizes.

[0114] In order to further improve the adaptability of the battery limit box 1 to batteries 100 to be tested of different sizes, a movable positioning member 16 is arranged on at least one of the bottom plate 12, the first side plate 14 and the second side plate 15. The movable positioning member 16 can be used to adjust the internal space size of the battery limit box 1 to adapt to batteries 100 to be tested of different sizes.

[0115] Exemplarily, at least one movable positioning member 16 is disposed on the bottom plate 12 , the first side plate 14 and the second side plate 15 , which can further improve the limiting effect of the battery limiting box 1 .

[0116] Combination Figure 5 As shown, in some embodiments, the battery limit box 1 further includes a movable screw 17 and a movable screw hole 18, the movable screw 17 is connected to the movable screw hole 18, the first end of the movable screw 17 is located inside the battery limit box 1 and connected to the movable positioning member 16, and the second end of the movable screw 17 is located outside the battery limit box 1. The movable screw 17 can be driven to rotate by the second end of the movable screw 17, and under the threaded cooperation of the movable screw hole 18, the movable screw 17 will move axially inward or outward depending on the rotation direction, thereby pushing the movable positioning member 16 to move inward or outward, thereby realizing the position adjustment of the movable positioning member 16.

[0117] On the other hand, combined Figure 6 As shown, this embodiment provides a testing device, which includes the testing fixture 200 of the present application and a tension mechanism 300 .

[0118] The tension mechanism 300 includes a support frame 3001 and a movable platform 3002, the movable platform 3002 is movably connected to the support frame 3001 and can move in the vertical direction; the test fixture 200 is located on the movable platform 3002, the second connecting component 4 is connected to the top surface of the movable platform 3002, and the first connecting component 3 is connected to the top beam of the support frame 3001. When the movable platform 3002 moves downward in the vertical direction, the top beam performs a tension test on the pole 1001 to be tested through the first connecting component 3.

[0119] The test equipment of this embodiment adopts the test fixture 200 of the present application and has all the beneficial technical effects of all the embodiments herein.

[0120] Through the above-mentioned testing equipment, the tension mechanism 300 can apply a vertical upward tension to the electrode 1001 to be tested through the first connecting component 3, and apply a vertical downward tension to the battery 100 to be tested through the second connecting component 4, thereby completing the tension test of the battery 100 to be tested.

[0121] Combination Figure 7 As shown, in some embodiments, the testing device further includes an inflation tester 400; the battery to be tested 100 after the tensile test is connected to the inflation tester 400, and the inflation tester 400 is used to test whether the battery to be tested 100 after the tensile test has leakage.

[0122] In order to further confirm whether the battery 100 to be tested has cracked and failed after the tensile test is completed, the battery 100 to be tested is subjected to an inflation test using an inflation test machine 400. If the battery 100 to be tested has no leakage, it indicates that the battery 100 to be tested has not cracked and failed, and the tensile test of the battery 100 to be tested has passed.

[0123] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0124] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0125] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0126] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0127] In the description of the present application, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application.

[0128] The above description is only an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A test fixture, characterized in that: The test fixture (200) comprises: a battery limiting box (1), a connecting piece (2), a first connecting component (3) and a second connecting component (4); The battery limiting box (1) is provided with a test window (11) on the top, and the battery limiting box (1) is used to accommodate a battery to be tested (100) and to limit and fix the battery to be tested (100); the pole to be tested (1001) of the battery to be tested (100) is located in the test window (11); The connecting piece (2) is used for welding and connecting the pole (1001) to be tested; The first connection component (3) is located above the battery limiting box (1) and is connected to the connection piece (2); the second connection component (4) is located below the battery limiting box (1) and is connected to the bottom of the battery limiting box (1); The first connecting assembly (3) and the second connecting assembly (4) are respectively used to connect the tensioning mechanisms.

2. The test fixture according to claim 1, characterized in that: The first connection assembly (3) comprises a first connection seat (31), a first connection column (32) and a first connection plate (33); The top of the first connecting seat (31) is used to connect the tension mechanism, the bottom of the first connecting seat (31) is provided with a first limiting groove (311), the top of the first connecting column (32) is plug-connected with the first limiting groove (311); the first connecting plate (33) is connected with the bottom of the first connecting column (32), and the axis of the first connecting column (32) passes through the geometric center of the first connecting plate (33); The first connecting plate (33) is parallel to and connected to the connecting sheet (2).

3. The test fixture according to claim 2, characterized in that: The connecting piece (2) is provided with two vertically penetrating first connecting holes (21), and the two first connecting holes (21) are symmetrically arranged on both sides of the pole (1001) to be tested; The first connecting plate (33) is provided with two second connecting holes (331) which are vertically penetrated, and the positions of the second connecting holes (331) correspond to the positions of the first connecting holes (21); The two first connection holes (21) and the two second connection holes (331) are respectively and correspondingly fastened and connected.

4. The test fixture according to claim 3, characterized in that: The test fixture (200) further comprises two first connecting screws (5) and two first connecting nuts (6); The two first connection screws (5) pass through the first connection hole (21) and the second connection hole (331) in sequence from bottom to top respectively; the two first connection nuts (6) are located on the top surface of the first connection plate (33); Each of the first connecting screws (5) is threadedly connected to one of the first connecting nuts (6) to fasten the first connecting plate (33) and the connecting sheet (2) together.

5. The test fixture according to claim 2, characterized in that: The connecting piece (2) is provided with two first folded portions (22), the two first folded portions (22) are located at two opposite edges of the connecting piece (2), and the two first folded portions (22) are symmetrically located along the pole (1001) to be tested; The first connecting plate (33) is provided with two second folding portions (332), and the positions of the second folding portions (332) correspond to the positions of the first folding portions (22); The two first folded portions (22) and the two second folded portions (332) are pin-connected respectively.

6. The test fixture according to claim 5, characterized in that: The first folding portion (22) is folded upward, and the second folding portion (332) is folded downward; The first folding portion (22) is provided with a first pin hole (221) which passes through horizontally, and the second folding portion (332) is provided with a second pin hole (3321) which passes through horizontally; the first pin hole (221) and the second pin hole (3321) are pin-connected with their axes coinciding, and the axes of the first pin hole (221) and the second pin hole (3321) intersect with the axis of the pole (1001) to be tested.

7. The test fixture according to claim 6, characterized in that: The test fixture (200) further comprises a long pin (7), wherein the long pin (7) passes through the two first pin holes (221) and the two second pin holes (3321) in a horizontal direction.

8. The test fixture according to any one of claims 1 to 7, characterized in that: The battery limiting box (1) comprises a bottom plate (12), a top plate (13), two first side plates (14) and two second side plates (15); The bottom plate (12) is located at the bottom of the battery to be tested (100), the top plate (13) is located at the top of the battery to be tested (100), the two first side plates (14) are respectively located on the two narrower sides of the battery to be tested (100), and the two second side plates (15) are respectively located on the two wider sides of the battery to be tested (100); The bottom edges of the two first side panels (14) and the bottom edges of the two second side panels (15) are respectively connected to the edges of the bottom panel (12); the top panel (13) is respectively connected to the top edges of the two second side panels (15), and the top edges of the top panel (13) and the two first side panels (14) are arranged at intervals, so that two test windows (11) are formed on the top of the battery limit box (1), and the positions of the two test windows (11) correspond to the positions of the two poles (1001) to be tested of the battery (100) to be tested.

9. The test fixture according to claim 8, characterized in that: The battery limiting box (1) is further provided with at least one movable positioning member (16), the at least one movable positioning member (16) being located on at least one of the bottom plate (12), the first side plate (14) and the second side plate (15), and the at least one movable positioning member (16) being in contact with the battery to be tested (100), and the at least one movable positioning member (16) being used to adjust the internal space of the battery limiting box (1) to accommodate batteries to be tested (100) of different sizes.

10. A testing device, characterized in that: The testing device comprises a testing fixture (200) as claimed in any one of claims 1 to 9, and a tension mechanism (300); The pulling mechanism (300) comprises a supporting frame (3001) and a movable platform (3002), wherein the movable platform (3002) is movably connected to the supporting frame (3001) and can move in a vertical direction; The test fixture (200) is located on the movable platform (3002), the second connection component (4) is connected to the top surface of the movable platform (3002), the first connection component (3) is connected to the top beam of the support frame (3001), and when the movable platform (3002) moves downward in a vertical direction, the top beam performs a tensile test on the pole (1001) to be tested through the first connection component (3).

11. The testing device according to claim 10, characterized in that The testing device also includes an inflation testing machine (400); The battery to be tested (100) after the tensile test is connected to the inflation test machine (400), and the inflation test machine (400) is used to test whether the battery to be tested (100) after the tensile test has air leakage.

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