Battery cell heat insulation pad structure

Abstract

The utility model discloses a battery cell heat insulation pad structure which comprises heat insulation foam, and the heat insulation foam is configured to be of a quadrangular structure and is provided with four corners; the plastic nails are respectively arranged at four corners; the plastic nails are integrated at the corners of the heat insulation foam in an embedded or semi-embedded mode. According to the heat insulation pad structure disclosed by the utility model, the plastic nails are additionally arranged at the corners of the heat insulation foam, so that the battery cells in a CTP arrangement form can be consistent, the distance between the battery cells is controllable after the battery cells enter a box, the production efficiency is effectively improved, the production welding problem is avoided, and the material loss rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery packs and new energy vehicles, and in particular to a battery core heat insulation pad structure. Background Art

[0002] As energy and environmental issues become increasingly severe, countries around the world are stepping up their efforts in the research and development of new energy vehicles, and my country's new energy vehicles have entered a stage of explosive growth. As one of the three major components of electric new energy vehicles, research on power batteries is imperative.

[0003] At present, there are usually two forms of internal arrangement of battery packs, namely module and CTP battery cell stacking; due to the low efficiency of module assembly, more and more battery companies have begun to adopt CTP battery layout, that is, the box assembly (horizontal and vertical beams) + battery cell + thermal insulation foam; no matter which form is adopted, thermal insulation foam is required for thermal insulation protection. In the CTP layout, since the battery cell is first put into the box as a whole and then the CCS component is welded, the consistency requirements of the battery cell before welding are higher; the traditional design principle is to apply a pre-pressure to the battery cell group after grouping through the fixture, so that the thermal insulation foam is transiently compressed, and then the reverse force after the fixture is released is used to fix it in the box; the most direct problem caused by this traditional design is that it cannot meet the consistency requirements of the battery cell after entering the box. After different battery cell groups are put into the box, the consistency status of the battery cells is not uniform. There is a need for manual hole alignment when the CCS component is put into the box for welding, which leads to slow production rhythm and low production efficiency. At the same time, it is easy to have welding dislocation, poor fitting, welding holes, and in serious cases, it is easy to cause the CCS component and the whole package welding to be scrapped.

[0004] Therefore, based on the above technical problems, technicians in this field urgently need to develop a battery cell thermal insulation pad structure. Utility Model Content

[0005] The purpose of the utility model is to provide a battery core thermal insulation pad structure, which adds plastic nails at the four corners of the thermal insulation foam. Through such a design, the consistency of the battery core can be ensured, the production efficiency can be effectively improved, the production welding problem can be avoided, and the material loss rate can be reduced.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a battery core thermal insulation pad structure, which comprises:

[0008] Insulating foam, the insulating foam being configured as a quadrilateral structure having four corners; and

[0009] Plastic nails respectively arranged at the four corners;

[0010] The plastic nails are integrated into the corners of the thermal insulation foam in an embedded or semi-embedded manner.

[0011] Furthermore, the corners of the thermal insulation foam are provided with through holes;

[0012] The opening size of the through hole is not less than the outer diameter of the plastic nail;

[0013] The plastic nail is embedded in the through hole and fixed at a middle position in the depth direction of the through hole.

[0014] Furthermore, a countersunk hole is provided at the corner of the thermal insulation foam;

[0015] The opening size of the countersunk hole is not less than the outer diameter of the plastic nail, and the depth of the countersunk hole is greater than half the thickness of the thermal insulation foam;

[0016] The plastic nail is embedded in the countersunk hole and contacts the bottom surface of the countersunk hole.

[0017] In the above technical solution, the utility model provides a battery cell thermal insulation pad structure, which has the following beneficial effects:

[0018] The thermal insulation pad structure of the utility model can make the battery cells in the CTP arrangement form consistent by adding plastic nails at the corners of the thermal insulation foam, and the spacing between the battery cells after entering the box can be controlled, which effectively improves production efficiency, avoids production welding problems, and reduces material loss rate.

[0019] The heat-insulating pad structure of the utility model is suitable for module arrangement and can also be applied to different whole-package arrangements, thereby reducing R&D costs and manufacturing costs and being more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic structural diagram of a battery cell thermal insulation pad structure disclosed in an embodiment of the present application;

[0022] Figure 2 It is a structural explosion diagram of a battery cell thermal insulation pad structure disclosed in an embodiment of the present application;

[0023] Figure 3 It is a front view of a battery cell thermal insulation pad structure disclosed in an embodiment of the present application;

[0024] Figure 4A cross-sectional view of a first embodiment of a battery cell thermal insulation pad structure disclosed in an embodiment of the present application;

[0025] Figure 5 This is a cross-sectional view of a second embodiment of a battery cell thermal insulation pad structure disclosed in an example of the present application.

[0026] Description of reference numerals:

[0027] 1. Insulation foam; 2. Plastic nails;

[0028] 101. Corner; 102. Through hole; 103. Countersunk hole. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figures 1 to 5 As shown;

[0031] The utility model discloses a battery core thermal insulation pad structure, which comprises:

[0032] The thermal insulation foam 1 is configured as a quadrilateral structure having four corners 101; and

[0033] Plastic nails 2 respectively disposed at the four corners 101;

[0034] The plastic nail 2 is integrated into the corner 101 of the thermal insulation foam 1 in an embedded or semi-embedded manner.

[0035] Specifically, this embodiment designs a novel battery cell thermal insulation pad structure, which integrates plastic nails 2 at the four corners 101 of the thermal insulation foam 1, and can control the distance of the battery cells after they are placed in the box through the plastic nails 2, ensuring that the distance between the battery cells is controllable and consistent. The plastic nails 2 of this embodiment are integrated into the corners 101 of the thermal insulation foam 1 in an embedded or semi-embedded manner.

[0036] Embodiment 1:

[0037] See also Figure 4 As shown, Figure 4 This is a structural description of the embedded installation structure of the plastic nail 2 of the first embodiment.

[0038] The corner 101 of the thermal insulation foam 1 of the first embodiment is provided with a through hole 102;

[0039] The opening size of the through hole 102 is not less than the outer diameter of the plastic nail 2;

[0040] The plastic nail 2 is embedded in the through hole 102 , and the plastic nail 2 is fixed at the middle position of the through hole 102 in the depth direction.

[0041] First, a through hole 102 is opened at the corner 101 of the insulating foam 1, and the size of the through hole 102 needs to match the plastic nail 2 to ensure that the plastic nail 2 can penetrate into the through hole 102, and then the plastic nail 2 can be fixed in the middle position inside the through hole 102 by any process means, thereby forming an embedded integrated structure.

[0042] Embodiment 2:

[0043] See also Figure 5 As shown, Figure 5 This is a structural description of the embedded installation structure of the plastic nail 2 of the second embodiment.

[0044] The corner 101 of the thermal insulation foam 1 of the second embodiment is provided with a countersunk hole 103;

[0045] The opening size of the countersunk hole 103 is not less than the outer diameter of the plastic nail 2, and the depth of the countersunk hole 103 is greater than half the thickness of the thermal insulation foam 1;

[0046] The plastic nail 2 is embedded in the countersunk hole 103 and contacts the bottom surface of the countersunk hole 103 .

[0047] In the second embodiment, a countersunk hole 103 is opened at the corner 101 of the thermal insulation foam 1, and the opening size of the countersunk hole 103 needs to match the plastic nail 2, and the opening depth needs to ensure that the plastic nail 2 is also at half the thickness of the plastic nail 2 when installed inside, that is, the middle position. Therefore, the depth of the countersunk hole 103 in this embodiment needs to be greater than half the thickness of the thermal insulation foam 1.

[0048] The semi-embedded structure of the present embodiment can be bound by mechanical equipment, and the plastic nail 2 is assembled to the bottom of the countersunk hole 103 for overall integration.

[0049] In the above technical solution, the utility model provides a battery cell thermal insulation pad structure, which has the following beneficial effects:

[0050] The thermal insulation pad structure of the utility model can make the battery cells in the CTP arrangement form consistent by adding plastic nails 2 to the corners 101 of the thermal insulation foam 1, and the spacing between the battery cells after being placed in the box can be controlled, which effectively improves production efficiency, avoids production welding problems, and reduces material loss rate.

[0051] The heat-insulating pad structure of the utility model is suitable for module arrangement and can also be applied to different whole-package arrangements, thereby reducing R&D costs and manufacturing costs and being more economical.

[0052] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A battery cell thermal insulation pad structure, characterized in that: The thermal insulation pad structure comprises: A thermal insulation foam (1), wherein the thermal insulation foam (1) is configured as a quadrilateral structure having four corners (101); and Plastic nails (2) respectively arranged at the four corners (101); The plastic nail (2) is integrated into the corner of the thermal insulation foam (1) in an embedded or semi-embedded manner.

2. A battery core thermal insulation pad structure according to claim 1, characterized in that: A through hole (102) is formed at a corner (101) of the thermal insulation foam (1); The opening size of the through hole (102) is not less than the outer diameter of the plastic nail (2); The plastic nail (2) is embedded in the through hole (102), and the plastic nail (2) is fixed at a middle position in the depth direction of the through hole (102).

3. A battery core thermal insulation pad structure according to claim 1, characterized in that: The corner (101) of the thermal insulation foam (1) is provided with a sink hole (103); The opening size of the countersunk hole (103) is not less than the outer diameter of the plastic nail (2), and the depth of the countersunk hole (103) is greater than half the thickness of the thermal insulation foam (1); The plastic nail (2) is embedded in the countersunk hole (103) and contacts the bottom surface of the countersunk hole (103).

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