A device and method for detecting the R-angle thickness of aluminum-plastic film of a new energy battery soft package

Abstract

The invention relates to a new energy battery soft pack aluminum-plastic film R-angle thickness detection device, comprising an R-angle fixture, the R-angle fixture comprising a base, a triangular pyramidal boss matching the R-angle shape of the battery aluminum-plastic film is arranged on the base, the triangular top of the triangular pyramidal boss faces upward, an upper cover for pressing and holding the corner with the R-angle cut from the battery aluminum-plastic film placed on the triangular pyramidal boss is arranged on the base, and a triangular hole facing the R-angle of the corner is arranged on the upper cover; the corner with the R-angle on the battery aluminum-plastic film with a formed R-angle is directly cut off, placed on the triangular pyramidal boss for positioning, and then the corner on the triangular pyramidal boss is pressed and held by the upper cover, at this time, the R-angle of the corner can be detected through the triangular hole, the existing process is completely changed, not only the thickness of the aluminum-plastic film at the R-angle in a complete form can be detected, the detection efficiency is greatly improved, and the factors causing errors such as burrs and ductility are greatly reduced, thereby improving the detection reliability and accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery detection, and more specifically, to a device and method for detecting the R-angle thickness of an aluminum-plastic film of a new energy battery soft package. Background Art

[0002] The explosion of Samsung's lithium battery has aroused people's attention to the safety of new energy batteries. The most likely reason for the lithium battery explosion is that the thickness of the aluminum-plastic film at the R corner of the battery soft pack is not enough, and the detection method of the thickness of the aluminum-plastic film at the R corner of the battery has become a breakthrough difficulty; at the vertex of the battery R corner, the thickness of the aluminum-plastic film is theoretically the smallest, and the aluminum-plastic film at this position is R-shaped, so it is called the aluminum-plastic film R corner thickness detection, which specifically refers to the thickness detection at the vertex of the R corner. The R corner thickness is the key to the safety of the entire battery soft pack;

[0003] Conventional testing is to unfold the aluminum-plastic film and then cut it, grind it with a case slicer, and test the metallographic structure of the cut to determine its thickness; the disadvantages of this method are: 1. Manual grinding is time-consuming and labor-intensive, and the aluminum-plastic film is stretched and deformed during the shearing and grinding process, which in turn affects the R-angle thickness error; 2. It is easy to cause burrs, which increases the error; 3. Only the linear band of the shear surface is tested, which is difficult to fully represent the thickness of the aluminum-plastic film at the R corner when the battery is in its complete form. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for detecting the R-angle thickness of an aluminum-plastic film of a new energy battery soft package in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A new energy battery soft pack aluminum-plastic film R-angle thickness detection device is constructed, wherein the device comprises an R-angle fixture, the R-angle fixture comprises a base, the base is provided with an oblique triangular pyramidal boss matching the R-angle shape on the battery aluminum-plastic film, the triangular top of the triangular pyramidal boss faces upward, the base is provided with an upper cover for pressing the corner with R-angle cut from the battery aluminum-plastic film placed on the triangular pyramidal boss, and the upper cover is provided with a triangular hole facing the R-angle of the corner.

[0007] The new energy battery soft-pack aluminum-plastic film R-angle thickness detection device described in the present invention, wherein the base is provided with a concave cavity with an upper end opening, the triangular cone boss is arranged in the concave cavity, and the upper cover seals the upper end opening of the concave cavity when the upper cover is in a pressed state.

[0008] The new energy battery soft package aluminum-plastic film R angle thickness detection device described in the present invention, wherein the upper cover is rotatably connected to the base.

[0009] The new energy battery soft package aluminum-plastic film R angle thickness detection device described in the present invention, wherein the outer surface of the base is provided with an observation window for observing the interior of the concave cavity.

[0010] The new energy battery soft-pack aluminum-plastic film R-angle thickness detection device described in the present invention, wherein one end of the upper cover is hinged to the base through a hinge, and when the upper cover is in a pressed state, the other end of the upper cover is detachably connected to or tightly attached to the upper end of the concave cavity.

[0011] The new energy battery soft-pack aluminum-plastic film R-angle thickness detection device described in the present invention, wherein a positioning block is provided at one end of the upper cover connected to the concave cavity, and a positioning groove corresponding to the positioning block is provided at the upper end of the concave cavity.

[0012] The new energy battery soft-pack aluminum-plastic film R-angle thickness detection device described in the present invention, wherein the hinge includes a first connecting piece and a second connecting piece that are hinged to each other; the first connecting piece is connected to the outer surface of the base, and the second connecting piece is connected to the lower surface of the upper cover; the upper end of the concave cavity is provided with an avoidance opening for avoiding the second connecting piece.

[0013] The new energy battery soft package aluminum-plastic film R corner thickness detection device described in the present invention further includes an X-ray fluorescence spectrometer and a plane fixture for positioning the outer surface of the battery aluminum-plastic film.

[0014] A method for detecting the R corner thickness of an aluminum-plastic film of a new energy battery soft package, using the above-mentioned device for detecting the R corner thickness of an aluminum-plastic film of a new energy battery soft package, wherein the method comprises the following steps:

[0015] Step 1: Cut off the corners with R angle on the battery aluminum-plastic film with formed R angle, and place it on the triangular cone boss for positioning;

[0016] Step 2: Hold the corners of the triangular pyramidal boss with the upper cover. At this time, the R angle of the corners can be detected through the triangular hole;

[0017] Step 3: Place the R corner fixture on the sample stage of the X-ray fluorescence spectrometer to detect the thickness at the R corner.

[0018] The method for detecting the R-angle thickness of the aluminum-plastic film of the new energy battery soft package of the present invention further comprises the following method:

[0019] Step 4: Use the CDD camera of the X-ray fluorescence spectrometer to visually observe or identify the detection position, start the detection after the detection position is determined, and output the detection report after the detection is completed;

[0020] A plurality of detection positions are pre-set on the computer, and each time the detection is started, the thickness of the pre-selected position is automatically detected.

[0021] The beneficial effect of the present invention is that: by applying the method of the present application, the corners with R angles on the battery aluminum-plastic film with formed R angles are directly cut off, placed on the triangular pyramidal boss for positioning, and then the corners on the triangular pyramidal boss are pressed and held by the upper cover. At this time, the R angle of the corners can be detected through the triangular hole, which completely changes the existing process. It can not only detect the thickness of the aluminum-plastic film at the R angle in the complete form, but also greatly improve the detection efficiency while greatly reducing the factors causing errors such as burrs and ductility, thereby improving the detection reliability and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0023] Figure 1 It is a structural schematic diagram of a new energy battery soft package aluminum-plastic film R angle thickness detection device according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic structural diagram of another angle of the R-angle thickness detection device for the aluminum-plastic film of a new energy battery soft package according to a preferred embodiment of the present invention;

[0025] Figure 3 It is an exploded view of a new energy battery soft package aluminum-plastic film R angle thickness detection device according to a preferred embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the corner portion with R angle cut from the aluminum-plastic film of a new energy battery soft package of the present invention in a device for detecting the R angle thickness of the aluminum-plastic film of the battery;

[0027] Figure 5 It is a flow chart of the R-angle thickness detection method of the aluminum-plastic film of the new energy battery soft package in the preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0029] The preferred embodiment of the present invention is a new energy battery soft package aluminum plastic film R angle thickness detection device, such as Figure 1 See also Figure 2-4 , including an R-angle fixture, the R-angle fixture including a base 1, on which is provided an oblique triangular pyramidal boss 2 matching the R-angle shape on the battery aluminum-plastic film, the triangular top of the triangular pyramidal boss 2 facing upward, and on which is provided an upper cover 3 for pressing and holding the corner with R-angle cut from the battery aluminum-plastic film placed on the triangular pyramidal boss 2, and on which is provided a triangular hole 30 facing the R-angle of the corner;

[0030] By using the method of the present application, the corners with R angles on the battery aluminum-plastic film with formed R angles are directly cut off, placed on the triangular pyramidal boss 2 for positioning, and then the corners on the triangular pyramidal boss 2 are pressed and held by the upper cover 3. At this time, the R angle of the corners can be detected through the triangular hole 30, which completely changes the existing process. It can not only detect the thickness of the aluminum-plastic film at the R angle in the complete form, but also greatly improve the detection efficiency while greatly reducing the factors causing errors such as burrs and ductility, thereby improving the detection reliability and accuracy.

[0031] It should be noted that, during the inspection, the corner portion may partially pass through the triangular hole or partially penetrate the triangular hole, or may not penetrate the triangular hole.

[0032] Preferably, a concave cavity 10 with an upper opening is provided on the base 1, and a triangular cone-shaped boss 2 is provided in the concave cavity 10. When the upper cover 3 is in a pressed state, the upper opening of the concave cavity 10 is sealed; the structure is reasonable and compact, and the integrity is good.

[0033] Preferably, the upper cover 3 is rotatably connected to the base 1, so as to facilitate the opening and pressing operations.

[0034] Preferably, an observation window 11 for observing the interior of the concave cavity 10 is provided on the outer surface of the base 1 ; the observation window 11 opened on the side facilitates observation of the sample inside the concave cavity 10 .

[0035] Preferably, one end of the upper cover 3 is hinged to the base 1 by a hinge 4, and when the upper cover 3 is in a pressed state, the other end of the upper cover 3 is detachably connected or tightly attached to the upper end of the concave cavity 10; it should be noted that when the tightly attached method is adopted, the upper cover can be relied on for maintaining the pressure; when the connection is detachable, magnetic attraction, snap-on connection and the like can be adopted.

[0036] Preferably, a positioning block 31 is provided at one end of the upper cover 3 connected to the concave cavity 10, and a positioning groove 12 corresponding to the positioning block 31 is provided at the upper end of the concave cavity 10 to avoid displacement and ensure the accuracy of the position of the triangular hole.

[0037] Preferably, the hinge 4 includes a first connecting piece 40 and a second connecting piece 41 which are hinged to each other; the first connecting piece 40 is connected to the outer surface of the base 1, and the second connecting piece 41 is connected to the lower surface of the upper cover 3; an escape opening 13 for evading the second connecting piece 41 is provided at the upper end of the concave cavity 10; the structure is reasonable, there will be no interference, and the integrity is good.

[0038] Preferably, the R-angle thickness detection device for the new energy battery soft-pack aluminum-plastic film also includes an X-ray fluorescence spectrometer and a plane jig for positioning the outer surface of the battery aluminum-plastic film; the plane jig can be an existing jig, and its purpose is to clamp and position the battery aluminum-plastic film in a flat or sideways state, and then send it to the spectrometer to observe the surface thickness of the battery aluminum-plastic film.

[0039] A method for detecting the R-angle thickness of an aluminum-plastic film of a new energy battery soft package is provided, using the above-mentioned device for detecting the R-angle thickness of an aluminum-plastic film of a new energy battery soft package. Figure 5 As shown, the following steps are included:

[0040] S01: Cut off the corners with R angles on the battery aluminum-plastic film with R angles formed, and place them on the triangular pyramidal boss for positioning;

[0041] S02: Press and hold the corners of the triangular pyramidal boss through the upper cover. At this time, the R angle of the corners can be detected through the triangular hole;

[0042] S03: Place the R corner fixture on the sample stage of the X-ray fluorescence spectrometer to measure the thickness at the R corner;

[0043] S04: Visual observation or identification is performed through the CDD camera of the X-ray fluorescence spectrometer to determine the detection position, and after the detection position is determined, the detection is started, and a detection report is output after the detection is completed;

[0044] By using the method of the present application, the corners with R angles on the battery aluminum-plastic film with formed R angles are directly cut off, placed on the triangular pyramidal boss for positioning, and then the corners on the triangular pyramidal boss are pressed and held by the upper cover. At this time, the R angle of the corners can be detected through the triangular hole, which completely changes the existing process. It can not only detect the thickness of the aluminum-plastic film at the R angle in the complete form, but also greatly improve the detection efficiency while greatly reducing the factors causing errors such as burrs and ductility, thereby improving the detection reliability and accuracy.

[0045] It should be noted that the detection position can be pre-set on the computer, and the thickness of the pre-selected position will be automatically detected each time the detection is started; multiple detection positions can be set at one time during the detection to measure the minimum thickness as much as possible;

[0046] More detailed operations include:

[0047] 1. Unfold the aluminum-plastic film that has been packaged (or made into a packaging shape according to packaging requirements) and cut out the part that needs to be tested.

[0048] 2. Place the cut part on the fixture and align the test part with the hole on the fixture. Close the fixture to complete the sample pretreatment.

[0049] 3. Place the fixture with the sample on the sample stage of the X-ray fluorescence spectrometer.

[0050] 4. Close the spectrometer detection chamber door.

[0051] 5. Turn on the power of the spectrometer and the computer.

[0052] 6. Open the spectrometer operating software on the computer.

[0053] 7. Through the CDD camera of the spectrometer, see the picture of the sample on the computer, select the detection position according to the detection needs (the detection position can be set in advance on the computer, and the thickness of the pre-selected position will be automatically detected each time the detection is started. When detecting the thickness, multiple points of thickness can be detected in the triangular hole area), and click to start the detection.

[0054] 8. Wait for the instrument to automatically detect the sample thickness.

[0055] 9. Print / output the test report to check whether the minimum value meets the requirements for the thickness of the residual aluminum layer and complete one test.

[0056] 10. Replace the sample, put the fixture back in, find the positioning point, and continue measuring after repositioning.

[0057] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A new energy battery soft package aluminum-plastic film R angle thickness detection device, characterized in that: It comprises an R-angle jig, which comprises a base, on which is provided an oblique triangular pyramidal boss matching the R-angle shape on the battery aluminum-plastic film, the triangular top of the triangular pyramidal boss facing upward, and on which is provided an upper cover for pressing and holding the corner with an R-angle cut from the battery aluminum-plastic film placed on the triangular pyramidal boss, and on which is provided a triangular hole facing the R-angle of the corner; on which is provided a concave cavity with an upper opening, the triangular pyramidal boss being arranged in the concave cavity, and the upper end opening of the concave cavity being sealed when the upper cover is in a pressing state; the new energy battery soft package aluminum-plastic film R-angle thickness detection device also comprises an X-ray fluorescence spectrometer and a plane jig for positioning the outer surface of the battery aluminum-plastic film.

2. The new energy battery soft package aluminum-plastic film R angle thickness detection device according to claim 1 is characterized in that: The upper cover is rotatably connected to the base.

3. The new energy battery soft package aluminum-plastic film R angle thickness detection device according to claim 2 is characterized in that: An observation window for observing the interior of the concave cavity is arranged on the outer surface of the base.

4. The device for detecting the R angle thickness of the aluminum-plastic film of the new energy battery soft package according to any one of claims 1 to 3, characterized in that: One end of the upper cover is hinged to the base through a hinge, and the other end of the upper cover is detachably connected to or tightly attached to the upper end of the concave cavity when the upper cover is in a pressed state.

5. The new energy battery soft package aluminum-plastic film R angle thickness detection device according to claim 4 is characterized in that: A positioning block is arranged at one end of the upper cover connected to the concave cavity, and a positioning groove corresponding to the positioning block is arranged at the upper end of the concave cavity.

6. The new energy battery soft package aluminum-plastic film R angle thickness detection device according to claim 4, characterized in that: The hinge includes a first connecting piece and a second connecting piece which are hinged to each other; the first connecting piece is connected to the outer surface of the base, and the second connecting piece is connected to the lower surface of the upper cover; and an escape opening for escaping the second connecting piece is provided at the upper end of the concave cavity.

7. A method for detecting the R corner thickness of an aluminum-plastic film of a new energy battery soft package, using the R corner thickness detection device of an aluminum-plastic film of a new energy battery soft package as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Cut off the corners with R angle on the battery aluminum-plastic film with formed R angle, and place it on the triangular cone boss for positioning; Step 2: Hold the corners of the triangular pyramidal boss with the upper cover. At this time, the R angle of the corners can be detected through the triangular hole; Step 3: Place the R corner fixture on the sample stage of the X-ray fluorescence spectrometer to detect the thickness at the R corner.

8. The method for detecting the R corner thickness of the aluminum-plastic film of the new energy battery soft package according to claim 7, characterized in that: Also includes methods: Step 4: Use the CDD camera of the X-ray fluorescence spectrometer to visually observe or identify the detection position, start the detection after the detection position is determined, and output the detection report after the detection is completed; A plurality of detection positions are pre-set on the computer, and each time the detection is started, the thickness of the pre-selected position is automatically detected.

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