Nanometer micropore heat insulation sheet for power battery cell and packaging jig of nanometer micropore heat insulation sheet

Abstract

The utility model discloses a nanometer micropore heat insulation sheet for a power battery cell and a packaging jig of the nanometer micropore heat insulation sheet, the nanometer micropore heat insulation sheet comprises a first packaging film, a nanometer micropore heat insulation plate and a second packaging film, and the packaging jig comprises a jig bottom frame and a jig upper frame, the upper surface of the jig bottom frame is provided with a plurality of through first hollowed-out grooves and first magnet grooves, limiting blocks are fixedly installed on the side faces of the jig bottom frame, second hollowed-out grooves are formed in the positions, corresponding to the first hollowed-out grooves, of the jig upper frame, and second magnet grooves are formed in the positions, corresponding to the first magnet grooves, of the jig upper frame. Magnets are fixedly mounted in the first magnet groove and the second magnet groove; according to the jig, the magnets are installed on the jig, the limiting blocks are installed on the jig bottom frame to limit the jig upper frame, and according to the principle of opposite attraction, the magnets on the two sides attract each other when the jig upper frame covers the jig bottom frame, so that the jig is not prone to sliding, dislocation of the nanometer micropore heat insulation plate is avoided, and the reject ratio of production is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy storage batteries, in particular to a nano-microporous thermal insulation sheet for a power battery cell and a packaging fixture thereof. Background Art

[0002] Insulation plates are generally installed between the single battery cells of existing new energy vehicles. The insulation plates are placed between the single battery cells. They are a kind of thermal protection equipment that can effectively delay or block the spread of thermal runaway of the single battery cells to the entire battery system. They can delay the spread of thermal runaway and buy time for further fire-fighting measures.

[0003] Nanoporous insulation board is a plate-shaped inorganic thermal insulation material with very low thermal conductivity and good processing characteristics. It is particularly suitable for use in occasions with high requirements for energy saving and environmental protection, especially high-temperature application scenarios where the thickness or weight of the insulation material is limited. Therefore, it is widely used in the production of battery cell insulation sheets.

[0004] However, when the existing battery cell insulation sheet packaging jig is used to package the insulation sheet, the packaging jig and the nano-microporous insulation board are prone to sliding, resulting in misalignment. The staff needs to adjust the position of the packaging jig and the insulation sheet multiple times, resulting in a low packaging rate and a high defective rate of the products produced. Utility Model Content

[0005] The purpose of the utility model is to provide a nano-porous insulation sheet for a power battery cell and a packaging jig thereof, so that the packaging jig and the nano-porous insulation plate are not easy to slide, the misalignment of the nano-porous insulation plate is reduced, the defective rate is reduced, the packaging rate is increased, and the problems raised in the above-mentioned background technology are effectively solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nanoporous thermal insulation sheet for a power battery cell and a packaging jig thereof, wherein the nanoporous thermal insulation sheet comprises a first packaging film, a nanoporous thermal insulation board and a second packaging film, the first packaging film is located below the nanoporous thermal insulation board, and the second packaging film is located above the nanoporous thermal insulation board, the packaging jig comprises a jig bottom frame and a jig upper frame of the same size, the upper surface of the jig bottom frame is provided with a plurality of through first hollow grooves arranged in an array, the upper surface of the jig bottom frame is provided with a through first magnet groove at a position away from the first hollow groove, the sides of the jig bottom frame at the four corners are fixedly installed with limit blocks, the upper surface of the jig upper frame is provided with a matching second hollow groove at a position corresponding to the first hollow groove, the upper surface of the jig upper frame is provided with a matching second magnet groove at a position corresponding to the first magnet groove, and magnets are fixedly installed in the first magnet groove and the second magnet groove.

[0007] The nanoporous insulation board is formed by clamping the nanoporous insulation board in the middle and encapsulating it with a first packaging film and a second packaging film. First, the second packaging film is placed on the bottom frame of the jig. Secondly, the nanoporous insulation board is aligned with the position of the first hollow groove and placed on the second packaging film in sequence. Then, the first packaging film is placed on the nanoporous insulation board. The upper frame of the jig is placed on the first packaging film and clamped in the limit block. The magnets on the upper frame and the bottom frame of the jig attract each other to clamp and fix the first packaging film, the nanoporous insulation board and the second packaging film, and finally placed in the packaging equipment for packaging.

[0008] Preferably, the nanoporous thermal insulation board is designed according to the core material size specifications, with a length of Amm, a width of Bmm, and a height of Cmm. The first hollow groove and the second hollow groove have the same size, with a length of (A+D)mm and a width of (B+D)mm, and D ranges from 0.8mm to 2.0mm. This makes it easier to place the nanoporous thermal insulation board without affecting the packaging.

[0009] Preferably, the magnet is a neodymium magnet, which can provide a stronger magnetic force than ordinary magnets, so that the upper frame and the bottom frame of the jig are clamped more firmly.

[0010] Preferably, the limit block is designed to be L-shaped and fixedly connected to two side edges adjacent to the bottom frame of the fixture.

[0011] Preferably, the height of the limit block is greater than the height of the jig bottom frame. The jig bottom frame and the jig upper frame have the same size, and the limit block is provided to prevent the jig upper frame from sliding after being placed on the jig bottom frame.

[0012] Preferably, the length of the first packaging film and the second packaging film is the same as the length of the jig upper frame, and the width of the first packaging film and the second packaging film is the same as the width of the jig upper frame. The size of the first packaging film and the second packaging film is the same as the jig upper frame, which is more conducive to subsequent packaging.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] The utility model provides a first magnet groove on the jig bottom frame, a second magnet groove on the jig upper frame, and installs neodymium magnets in the first magnet groove and the second magnet groove. According to the principle of opposites attract, the jig upper frame is not easy to slide when covering the jig bottom frame, thereby avoiding misalignment of the nano-microporous insulation board and reducing the production defect rate. By installing limit blocks on the four corners of the jig bottom frame, the sliding of the jig upper frame can be limited when packaging the product, further reducing the defect rate of product packaging and effectively improving the packaging rate. By designing the length and width of the first hollow groove and the second hollow groove to be larger than the length and width of the nano-microporous insulation board by 0.8 mm to 2.0 mm, the nano-microporous insulation board can be placed more easily without affecting the packaging, thereby further improving the packaging rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An exploded view of the nano-microporous thermal insulation sheet and packaging fixture of the utility model;

[0016] Figure 2 This is an exploded view of the nano-microporous thermal insulation sheet of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the upper frame of the fixture of the utility model;

[0018] Figure 4 This is a schematic structural diagram of a fixture bottom frame according to Embodiment 1 of the present utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the fixture bottom frame of Example 2 of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the fixture bottom frame of Example 3 of the utility model.

[0021] Explanation of the accompanying drawings: 1. first packaging film; 2. nano-microporous insulation board; 3. second packaging film; 4. fixture bottom frame; 5. fixture upper frame; 6. first hollow groove; 7. first magnet groove; 8. limiting block; 9. second hollow groove; 10. second magnet groove; 11. magnet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0024] See also Figure 1-4 The utility model provides a technical solution: a nanoporous thermal insulation sheet for a power battery cell and a packaging fixture thereof, wherein the nanoporous thermal insulation sheet comprises a first packaging film 1, a nanoporous thermal insulation board 2 and a second packaging film 3, the first packaging film 1 is located below the nanoporous thermal insulation board 2, and the second packaging film 3 is located above the nanoporous thermal insulation board 2, the packaging fixture comprises a fixture bottom frame 4 and a fixture upper frame 5 of the same size, a plurality of through first hollow grooves 6 are opened on the upper surface of the fixture bottom frame 4 and arranged in an array, a through first magnet groove 7 is opened on the upper surface of the fixture bottom frame 4 away from the first hollow groove 6, a limiting block 8 is fixedly installed on the side of the fixture bottom frame 4 at the four corners, a matching second hollow groove 9 is opened on the upper surface of the fixture upper frame 5 corresponding to the position of the first hollow groove 6, a matching second magnet groove 10 is opened on the upper surface of the fixture upper frame 5 corresponding to the position of the first magnet groove 7, and magnets 11 are fixedly installed in the first magnet groove 7 and the second magnet groove 10.

[0025] The nano-microporous insulation board 2 is designed according to the core material size specifications, with a length of Amm, a width of Bmm, and a height of Cmm. The first hollow groove 6 and the second hollow groove 9 have the same size, with a length of (A+D)mm and a width of (B+D)mm, and D ranges from 0.8mm to 2.0mm.

[0026] The magnet 11 is a neodymium magnet.

[0027] The limiting block 8 is designed to be L-shaped and is fixedly connected to two adjacent side edges of the fixture bottom frame 4 .

[0028] The height of the limiting block 8 is greater than the height of the fixture bottom frame 4 .

[0029] The lengths of the first packaging film 1 and the second packaging film 3 are the same as the length of the jig upper frame 5 , and the widths of the first packaging film 1 and the second packaging film 3 are the same as the width of the jig upper frame 5 .

[0030] Reference Figure 4In Example 1, the number of the first hollow grooves 6 is more than 2, and the first hollow grooves 6 are distributed in an array on the fixture bottom frame 4, so that multiple nano-microporous insulation boards 2 can be packaged, and the size of the first hollow groove 6 is the size that matches the nano-microporous insulation board 2. For example, the length of the nano-microporous insulation board is 15mm, the width is 18mm, and the height is 3mm, then the length of the first hollow groove 6 is (15+1.5)mm, and the width is (18+1.5)mm. Further, a first magnet groove 7 is provided on the upper surface of the fixture bottom frame 4 away from the first hollow groove 6, and the number thereof may not be limited to 2, but may also be 3, or even more. Further, the size of the fixture upper frame 5 is the same as that of the fixture bottom frame 4, the size of the second hollow groove 9 on the fixture upper frame 5 is the same as that of the first hollow groove 6, and the second hollow groove 9 and the first hollow groove 6 are arranged in the same manner, and the second magnet groove 10 on the fixture upper frame 5 and the first magnet groove 7 on the fixture bottom frame 5 are arranged in the same position.

[0031] Reference Figure 5 In Example 2, the number of the first hollow grooves 6 on the jig bottom frame 4 is 2, and the first hollow grooves 6 are distributed in parallel on the jig bottom frame 4.

[0032] Reference Figure 6 In Example 3, the number of the first hollow groove 6 on the fixture bottom frame 4 is 1, and it is arranged in the middle of the fixture bottom frame 4 to encapsulate a larger nano-microporous insulation board 2.

[0033] Working principle or structural principle: first, place the second packaging film 3 on the jig bottom frame 4, then place the nanoporous insulation board 2 on the second packaging film 3 and align it with the first hollow groove 6, then place the first packaging film 1 on the nanoporous insulation board 2, and place the jig upper frame 5 on the first packaging film 1, the jig upper frame 5 is aligned with the inner side of the limit block 8, at this time, the first hollow groove 6 and the second hollow groove 9 are respectively sleeved on the outer side of the corresponding nanoporous insulation board 2, the magnets 11 in the first magnet groove 7 and the second magnet groove 10 attract each other, so that the first packaging film 1, the nanoporous insulation board 2 and the second packaging film 3 are clamped and fixed by the jig bottom frame 4 and the jig upper frame 5 to prevent sliding, and finally put them into the packaging equipment to complete the packaging, with fast packaging speed and high packaging quality.

[0034] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0035] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0036] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nanoporous thermal insulation sheet for a power battery cell and a packaging fixture thereof, wherein the nanoporous thermal insulation sheet comprises a first packaging film (1), a nanoporous thermal insulation board (2) and a second packaging film (3), wherein the first packaging film (1) is located below the nanoporous thermal insulation board (2), and the second packaging film (3) is located above the nanoporous thermal insulation board (2), characterized in that: The packaging jig comprises a jig bottom frame (4) and a jig top frame (5) of the same size; a plurality of through first hollow grooves (6) are provided on the top surface of the jig bottom frame (4) and arranged in an array; a through first magnet groove (7) is provided on the top surface of the jig bottom frame (4) at a position away from the first hollow groove (6); limit blocks (8) are fixedly installed on the sides of the jig bottom frame (4) at four corners; a matching second hollow groove (9) is provided on the top surface of the jig top frame (5) at a position corresponding to the first hollow groove (6); a matching second magnet groove (10) is provided on the top surface of the jig top frame (5) at a position corresponding to the first magnet groove (7); and magnets (11) are fixedly installed in both the first magnet groove (7) and the second magnet groove (10).

2. The nanoporous thermal insulation sheet for a power battery cell and the packaging jig thereof according to claim 1, characterized in that: The nano-microporous insulation board (2) is designed according to the core material size specifications, with a length of A mm, a width of B mm, and a height of C mm. The first hollow groove (6) and the second hollow groove (9) have the same size, with a length of (A+D) mm and a width of (B+D) mm, and D ranges from 0.8 mm to 2.0 mm.

3. The nanoporous thermal insulation sheet for a power battery cell and the packaging jig thereof according to claim 1, characterized in that: The magnet (11) is a neodymium magnet.

4. The nanoporous thermal insulation sheet for a power battery cell and the packaging jig thereof according to claim 1, characterized in that: The limit block (8) is designed to be L-shaped and is fixedly connected to the two adjacent sides of the fixture bottom frame (4).

5. The nanoporous thermal insulation sheet for a power battery cell and the packaging jig thereof according to claim 4, characterized in that: The height of the limiting block (8) is greater than the height of the fixture bottom frame (4).

6. The nanoporous thermal insulation sheet for a power battery cell and the packaging jig thereof according to claim 1, characterized in that: The lengths of the first packaging film (1) and the second packaging film (3) are the same as the length of the jig upper frame (5), and the widths of the first packaging film (1) and the second packaging film (3) are the same as the width of the jig upper frame (5).

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