Current collector bending test equipment

Abstract

The utility model discloses current collector bending test equipment. The current collector bending test equipment comprises a bending test adsorption plate and a vacuum pump, the bending test adsorption plate comprises a left test plate and a right test plate, and the left test plate is rotatably connected with the right test plate; the left test plate and the right test plate can be mutually covered through rotation, and adsorption holes are respectively formed in a covering surface, opposite to the right test plate, of the left test plate and a covering surface, opposite to the left test plate, of the right test plate; the adsorption holes are connected with a vacuum pump through a gas path arranged in the bending test adsorption plate, so that the current collector placed on the covering surface can be adsorbed on the bending test adsorption plate. The current collector sample strip is bent through the current collector bending test equipment for bending test, the operation is normative, convenient and fast, the test efficiency can be improved, more specific and accurate test information can be conveniently obtained, and the test process of the current collector is conveniently controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a current collector bending test equipment. BACKGROUND

[0002] The current collector is the structure or part for collecting current in the battery. In the battery manufacturing process, the performance of the current collector restricts the preparation process of the battery cell. In the conventional performance test of the current collector, the bending test of the current collector is included, and the bending test of the current collector needs to bend the current collector foil to test the toughness of the current collector foil, so that the foil has sufficient mechanical properties in the subsequent winding and processing process, so as to ensure the stability and process yield of the battery cell.

[0003] The existing current collector bending test is generally confirmed by manually folding the current collector foil twice. Due to the difference in folding test process of different testers, the test result is easily different, thereby affecting the continuity of the battery cell process; and the test result of the current collector needs to be communicated and confirmed in many aspects, which causes waste of resources and seriously affects the accuracy and efficiency of the test; in addition, manually folding the current collector sample is not conducive to the process personnel to control the test process, which affects the production efficiency and product quality of the battery cell. UTILITY MODEL CONTENT

[0004] The utility model aims at the above problems, and provides a current collector bending test equipment, which can standardize the bending performance test of the current collector.

[0005] To achieve the above object, the utility model provides the technical scheme:

[0006] A current collector bending test equipment, comprising a bending test adsorption plate and a vacuum pump; the bending test adsorption plate comprises a left test plate and a right test plate, and the left test plate and the right test plate are rotatably connected;

[0007] The left test plate and the right test plate can be covered with each other by rotating, and adsorption holes are arranged on the covering surface of the left test plate to the right test plate and the covering surface of the right test plate to the left test plate respectively; the adsorption holes are connected with the vacuum pump through the gas circuit arranged in the bending test adsorption plate, so that the current collector placed on the covering surface can be adsorbed on the bending test adsorption plate.

[0008] To optimize the above technical scheme, the specific measures also include:

[0009] The left test plate and the right test plate are provided with a gap in the plate body, and the gap is provided with a gas circuit, and the gas circuit is connected with the adsorption holes on the covering surface and the gas pipe of the vacuum pump.

[0010] Further, the diameter of the adsorption hole is 0.5-3mm.

[0011] Further, the bending test adsorption plate is a hinge structure test plate, and the left test plate and the right test plate are connected by a shaft pin.

[0012] Further, the left test plate and the right test plate of the bending test adsorption plate are light-transmitting materials.

[0013] Further, the bending test adsorption plate is provided with a light source.

[0014] Further, the light source is arranged on the plate body of at least one of the left test plate and the right test plate.

[0015] As a preferred scheme, the light source is a plurality of LED lamp beads or a lamp strip embedded in the bending test adsorption plate.

[0016] Further, the left test plate is provided with a left test area, and the right test plate is provided with a right test area, the left test area and the right test area correspond to each other after the left test plate and the right test plate are closed, the left test area and the right test area are distributed with adsorption holes, and the position of the light source on the bending test adsorption plate corresponds to at least one of the left test area and the right test area.

[0017] Further, the opening rate of the surface of the left test area and the right test area is 10%-40%.

[0018] Compared with the prior art, the bending test equipment for the current collector has the beneficial effects that:

[0019] The utility model provides a kind of current collector bending test equipment, including left test plate and right test plate with adsorption hole, and the adsorption hole is connected with vacuum pump by gas path being arranged in bending test adsorption plate, so that the current collector placed on the closing surface can be adsorbed on the bending test adsorption plate;Left test plate and right test plate are rotated and closed to each other, and the current collector sample bar placed on the closing surface of left test plate and right test plate can be bent, and the bending state of the current collector is checked and test result is recorded by tester.When current collector bending test equipment is used to bend 180 degrees of current collector sample bar, because current collector sample bar foil is completely adsorbed on the closing surface of test plate on both sides, current collector sample bar foil non-bending area does not appear deformation in bending process.

[0020] The utility model can also be provided with light source on bending test adsorption plate, and after current collector sample bar is bent, whether current collector exists light-transmitting phenomenon after bending can be more clearly checked by irradiation of light source, to provide more specific and accurate test result for bending test of current collector, and also facilitate the process control of current collector.

[0021] The utility model discloses still can set left test area on left test board, set right test area on right test board, and the block shape design of left test area, right test area matches with the specification of the current collector to be determined, and when testing, places the current collector according to the shape of left test area, right test area, makes the left half of current collector be located in left test area, and right half is located in right test area, and and the edge of test area is aligned, through this setting, can make the testing process of current collector more standard, specification, is favorable to improve the testing efficiency and obtains more accurate test result. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure diagram of current collector bending test equipment of example 1.

[0023] Figure 2 Structure diagram of current collector bending test equipment of example 1.

[0024] Figure 3 Structure diagram of current collector bending test equipment of example 2.

[0025] Figure 4 Structure diagram of current collector bending test equipment of example 3.

[0026] In the drawing: 1-bending test adsorption plate, 2-vacuum pump, 3-left test plate, 4-right test plate, 5-rotatable connecting structure, 6-adsorption hole, 7-air pipe, 8-light source, 9-left test area, 10-right test area. DETAILED DESCRIPTION

[0027] The above contents of the utility model are further explained in detail by the form of example, but this should not be understood as the range of the above subject matter of the utility model is limited to the following examples, and the technology realized based on the above contents of the utility model belongs to the range of the utility model.

[0028] In the description of the utility model, it also needs to be explained that: the orientation or position relation based on the relation shown in the drawing is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or component must have a particular orientation, a particular orientation structure and operation, so it cannot be understood as the limitation of the utility model.

[0029] Example 1

[0030] A current collector bending test equipment, as shown in Figure 1 It includes bending test adsorption plate 1 and vacuum pump 2, and bending test adsorption plate 1 includes left test plate 3 and right test plate 4, and the rotatable connecting structure 5 between left test plate 3 and right test plate 4, as shown in Figure 2 (The vacuum pump is not shown in the drawing).

[0031] The left test plate 3 and the right test plate 4 can be covered by rotating each other, and the left test plate 3 and the right test plate 4 are respectively provided with adsorption holes 6 on the covering surface of the left test plate 3 to the right test plate 4 and the covering surface of the right test plate 4 to the left test plate 3; the adsorption holes 6 are connected with the vacuum pump 2 through the gas path arranged in the bending test adsorption plate 1, so that the current collector placed on the covering surface can be adsorbed on the bending test adsorption plate 1.

[0032] The plate body of the left test plate 3 and the right test plate 4 is provided with a clamping gap, and the gas path is arranged in the clamping gap, and the gas path is communicated with the adsorption hole 6 on the covering surface and the gas pipe 7 of the vacuum pump 2.

[0033] In some embodiments of embodiment 1, the bending test adsorption plate 1 is a hinge structure test plate, and the left test plate 3 and the right test plate 4 are connected by a shaft pin; the material of the shaft pin can be high-carbon manganese steel, ceramic, titanium alloy, etc.

[0034] In some embodiments of embodiment 1, the vacuum pump 2 can adopt reciprocating, rotary, liquid ring and jet type vacuum pumps 2, etc.; the gas pipe 7 of the vacuum pump 2 can adopt PVC, PU and other materials.

[0035] In some embodiments of embodiment 1, the diameter of the adsorption hole 6 is 0.5-3mm.

[0036] In some embodiments of embodiment 1, the vacuum adsorption pressure is adjustable from-0.1MPa to-0.8MPa.

[0037] In use, the current collector sample to be tested is placed across the covering surface of the left test plate 3 and the right test plate 4, and since the covering surface of the left test plate 3 and the right test plate 4 is provided with the adsorption hole 6, the vacuum pump 2 connected through the gas path can stably adsorb the current collector sample placed on the covering surface; then the left test plate 3 and the right test plate 4 are rotated to cover each other, so that the current collector sample placed across the covering surface of the left test plate 3 and the right test plate 4 is bent; after the current collector sample is bent, the tester checks the state of the current collector and records the test results, which is standardized and convenient and fast. When the current collector bending test device is used to test the 180° bending of the current collector sample, since the current collector sample foil is completely adsorbed on the covering surface of the two test plates, the non-bending area of the current collector sample foil will not be deformed during the bending process, thereby affecting the test results.

[0038] Embodiment 2

[0039] A current collector bending test device, comprising a bending test adsorption plate 1, a vacuum pump 2 and a left test plate 3 and a right test plate 4. Figure 3As shown, the left test plate 3 and the right test plate 4 of the bending test adsorption plate 1 of the embodiment are of light-transmitting material; the bending test adsorption plate 1 is provided with a light source 8, the light source 8 is arranged on the plate body of at least one of the left test plate 3 and the right test plate 4, and other features are the same as those of the embodiment 1.

[0040] In some embodiments of the embodiment 2, the light source 8 is a plurality of LED lamp beads or a lamp strip embedded in the bending test adsorption plate 1.

[0041] When the current collecting body sample is bent, the light-transmitting phenomenon of the current collecting body after bending can be more clearly observed through the irradiation of the light source 8, thereby providing more specific and accurate test results for the bending test of the current collecting body and facilitating the process control of the test of the current collecting body.

[0042] Embodiment 3

[0043] A current collecting body bending test device, as shown in Figure 4 As shown, the left test plate 3 of the bending test adsorption plate 1 of the embodiment is provided with a left test area 9, the right test plate 4 is provided with a right test area 10, and the left test area 9 and the right test area 10 correspond to each other after the left test plate 3 and the right test plate 4 are closed; the left test area 9 and the right test area 10 are distributed with adsorption holes 6, and the position of the light source 8 on the bending test adsorption plate 1 corresponds to at least one of the left test area 9 and the right test area 10, and other features are the same as those of the embodiment 2.

[0044] The block shape design of the left test area 9 and the right test area 10 of the embodiment matches the specification of the current collecting body to be determined.

[0045] In some embodiments of the embodiment 3, the opening rate of the test area surface distributed with the adsorption holes 6 is 10% to 40%.

[0046] When the current collecting body bending test device of the embodiment is used for testing, the current collecting body is placed according to the shape of the left test area 9 and the right test area 10, so that the left half of the current collecting body is located in the left test area 9 and the right half of the current collecting body is located in the right test area 10 and is aligned with the edges of the test area; through the setting, the test process of the current collecting body is more standard and normative, which is conducive to improving the test efficiency and obtaining more accurate test results.

[0047] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art, without departing from the technical solution of the present application, according to the technical essence of the present application, any simple modification, equivalent replacement and improvement of the above embodiment, all still belong to the protection scope of the technical solution of the present application.

Claims

1. A current collector bending test device, characterized in that: It includes a bending test adsorption plate and a vacuum pump; the bending test adsorption plate includes a left test plate and a right test plate, and the left test plate and the right test plate are rotatably connected. The left and right test plates can be rotated to cover each other. Adsorption holes are provided on the covering surface of the left test plate over the right test plate and the covering surface of the right test plate over the left test plate. The adsorption holes are connected to a vacuum pump through an air passage set in the bending test adsorption plate, so that the current collector placed on the covering surface can be adsorbed onto the bending test adsorption plate.

2. The current collector bending test device according to claim 1, characterized in that: The left and right test plates are provided with a slit, and an air passage is provided in the slit. The air passage connects the adsorption hole on the cover surface and the air pipe of the vacuum pump.

3. The current collector bending test device according to claim 1, characterized in that: The diameter of the adsorption pores is 0.5-3 mm.

4. The current collector bending test device according to claim 1, characterized in that: The bending test adsorption plate is a hinge structure test plate, and the left test plate and the right test plate are connected by a pivot pin.

5. The current collector bending test device according to claim 1, characterized in that: The left and right test plates of the bending test adsorption plate are made of light-transmitting material.

6. The current collector bending test device according to claim 5, characterized in that: The bending test adsorption plate is equipped with a light source.

7. The current collector bending test device according to claim 6, characterized in that: The light source is disposed on at least one of the left and right test plates.

8. The current collector bending test device according to claim 6, characterized in that: The light source is a number of LED beads or light strips embedded in the bending test adsorption plate.

9. The current collector bending test device according to claim 6, characterized in that: The left test plate is provided with a left test area, and the right test plate is provided with a right test area. The left test area and the right test area correspond to each other after the left test plate and the right test plate are closed. The left test area and the right test area are provided with adsorption holes. The position of the light source on the bending test adsorption plate corresponds to at least one of the left test area and the right test area.

10. The current collector bending test device according to claim 9, characterized in that: The aperture ratio of the surfaces of the left and right test areas is 10% to 40%.

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