Hole site covering device and battery pack shell

Abstract

The utility model provides a hole site covering device and a battery pack shell, the hole site covering device is used for covering holes on a plate body when a composite material layer is compounded on the plate body, the covering device comprises a main body made of an elastic material, the waist part of the main body is provided with a clamping groove which is concavely arranged inwards; when the main body blocks the hole, the clamping groove is tensioned in the hole. According to the hole site covering device, the inwards-sunken clamping groove is formed in the waist portion of the hole site covering device, the hole wall of the hole of the plate body can be embedded into the clamping groove, due to the fact that the hole site covering device is elastic, the waist portion of the hole site covering device can be tensioned in the hole and tightly attached to the inner wall of the hole, and compared with a conventional sealing cover device, the hole site covering device has the advantages that the hole site covering device is simple in structure and convenient to use. The connection is firmer; the sizes of the hole site covering devices at the two ends of the plate body are larger than the size of the waist portion of the plate body, the hole site covering devices can seal the hole openings of the holes more tightly, and when the plate body is used for compounding the composite material layers, the composite materials in the flowing state are more not prone to flowing into the holes.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a hole covering device. The utility model also relates to a battery pack housing equipped with the hole covering device. Background Art

[0002] With the vigorous development of the new energy industry, the battery pack, as one of its core components, has received more and more attention for its technical level and safety performance. The battery pack is not only an important component of new energy equipment such as electric vehicles and energy storage systems, but also the key to ensuring the efficient, stable and safe operation of these equipment. The structure of the battery pack usually includes a shell, a battery module, electrical components and a cooling assembly. The electrical components are set in the shell, used for the management of the battery pack and connecting with external equipment, and the cooling assembly is used to cool the battery module. The main function of the battery pack shell is to provide an installation basis for the components inside the battery pack, and to provide a connection basis for the battery pack to external devices.

[0003] In addition to providing a foundation for installation and connection, the battery pack shell also plays an important role in protecting internal components. It can effectively resist the intrusion of adverse factors such as moisture, dust, vibration, etc. in the external environment, ensuring that the battery pack can still operate stably under complex and changeable working conditions. In addition, when the battery pack is abnormal, such as overcharge, over discharge, short circuit, etc., the shell can also withstand a certain amount of pressure and impact to prevent the battery module from being damaged or catching fire, ensuring the safety of personnel and equipment.

[0004] In order to meet the strength and weight requirements of the battery pack, a new type of upper shell has emerged. It adopts a composite material plus steel plate high-pressure composite structure, which can provide good structural strength while meeting the weight requirements. The upper shell is provided with a mounting point hole. When the steel plate is composited with a composite material layer, a rubber plug is required to seal the hole. However, the conventional covering device is easy to fall off during use, which can easily cause glue overflow in the mounting point hole, affecting the processing quality of the upper shell. Utility Model Content

[0005] In view of this, the utility model aims to provide a hole covering device to improve the connection firmness of the covering device in the hole of the upper shell, so that the covering device is not easily fallen off due to external force, thereby improving the processing quality of the upper shell.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A hole covering device is used to cover the holes on a plate body when a composite material layer is laminated on the plate body, and the covering device comprises:

[0008] The main body is made of elastic material, and a slot recessed inward is formed at the waist of the main body; when the main body blocks the hole, the inner wall of the slot is tightened in the hole.

[0009] Furthermore, the main body includes a head and a tail connected to the upper and lower sides of the waist, and the area of ​​the head located on the side where the composite material layer is located is larger than the area of ​​the tail.

[0010] Furthermore, the head portion and the tail portion are respectively constructed in a truncated cone shape.

[0011] Furthermore, the thickness of the head is greater than the thickness of the composite material layer composited on the plate body.

[0012] Furthermore, the thickness of the waist is smaller than the thickness of the plate body.

[0013] Furthermore, the composite material layer is formed by hot pressing resin on the plate body.

[0014] Furthermore, the main body is made of rubber material.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The hole covering device described in the utility model can make the hole wall of the plate body hole fit into the groove by arranging an inwardly recessed groove at its waist, and because of the elastic arrangement of the hole covering device, the waist of the hole covering device can be stretched and tightened in the hole, tightly fitting with the inner wall of the hole to seal the hole. Compared with the conventional sealing device, the connection is more secure; the size of the hole covering device at both ends of the plate body is larger than the size of its waist, which can also make the hole covering device more tightly seal the hole mouth. When the plate body is composited with a composite material layer, the composite material in a flowing state is less likely to flow into the hole.

[0017] By providing a head and a tail on the hole covering device and making the area of ​​the head larger than the area of ​​the tail, it is convenient for the user to distinguish the two ends of the hole covering device and to correctly place the head of the hole covering device on the side of the plate body used for composite material; secondly, the area of ​​the head is larger than the area of ​​the tail, which can also facilitate the user to remove the hole covering device from the side of the plate body composited with the composite material layer, thereby reducing the force required to remove the hole covering device and at the same time reducing the amount of material required to be used at the tail end, thereby reducing costs.

[0018] Constructing both the head and the tail into a truncated cone shape can make the edge of the hole covering device smoother and less likely to get caught or tripped over other objects; the truncated cone-shaped tail can also easily return to its original shape after being squeezed through the hole, making the hole covering device more convenient to install.

[0019] The thickness of the head is set to be greater than the thickness of the composite layer laminated on the plate body, so that when the plate body is laminated with the composite layer, the flowing composite material will not exceed the head and wrap the head, making it easy to remove the hole covering device later.

[0020] By setting the thickness of the waist to be smaller than the thickness of the plate body, the hole covering device can be clamped on the plate body by its own elasticity, thereby improving the connection strength.

[0021] The composite layer is formed by hot pressing the resin on the plate, which has good molding effect and stable properties under high temperature conditions. Its good electrical insulation and corrosion resistance can ensure that the internal components of the battery pack are protected from erosion by the external environment, helping to maintain a stable environment inside the battery pack.

[0022] The main body is configured to be made of rubber, the rubber raw material is easy to obtain, the rubber molding process is also very mature, the manufacturing difficulty is low, the yield rate of the main body can be improved, and the production cost can be reduced.

[0023] Another object of the present utility model is to provide a battery pack shell, comprising a plate body with a hole, a composite material layer being composited on the plate body, and when the composite material layer is composited on the plate body, the hole is equipped with the hole position covering device as described above.

[0024] The battery pack shell described in the utility model, when the composite material layer is compounded, is provided with the above-mentioned hole position covering device, so the flowing composite material is not easy to flow into the hole, and the structural function of the hole can be better maintained intact; by adopting the above-mentioned hole position covering device, the hole covering device is stuck in the hole, and when the battery pack shell is subjected to the subsequent sandblasting process, the hole covering device is not easy to fall off due to the impact of sand particles sprayed by the sandblasting machine, so that the part of the battery pack shell exposed from the composite material layer is not impacted by the sand particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of a hole covering device according to a first embodiment of the utility model;

[0027] Figure 2 It is a cross-sectional schematic diagram of a hole covering device according to an embodiment of the present utility model when it is installed on a plate.

[0028] Description of reference numerals:

[0029] 1. Board body;

[0030] 2. Composite material layer;

[0031] 3. Subject;

[0032] 301, card slot; 302, head; 303, tail. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] Embodiment 1

[0038] The present embodiment relates to a hole covering device to optimize the structure of the existing covering device to enhance the connection firmness of the covering device on the plate body 1, so that the hole covering device is not easy to fall off during use, and the flowing composite material is not easy to enter the holes of the plate body 1, thereby improving the quality of the composite material layer of the plate body 1.

[0039] In terms of overall structure, a hole covering device in this embodiment is used to cover the holes on the plate body 1 when the composite material layer 2 is composited on the plate body 1. The covering device includes:

[0040] The main body 3 is made of elastic material, and a slot 301 recessed inwardly is formed at the waist of the main body 3. When the main body 3 blocks the hole, the inner wall of the slot 301 is tightened in the hole.

[0041] As set above, the hole covering device described in this embodiment can make the hole wall of the plate body 1 fit into the slot 301 by setting an inwardly recessed slot 301 at its waist. Because of the elastic setting of the hole covering device, the waist of the hole covering device can be tightened in the hole and fit closely with the inner wall of the hole to seal the hole. Compared with conventional capping devices, the connection is more secure. The hole covering device has larger dimensions at both ends of the plate body 1 than its waist, which can also make the hole covering device seal the hole mouth more tightly. When the plate body 1 is composited with the composite material layer 2, the composite material in a flowing state is less likely to flow into the hole.

[0042] Based on the above overall introduction, refer to Figure 1 and Figure 2 As shown, there are holes preset on the plate body 1, and the surface of one side of the plate body 1 needs to be compounded with a composite material layer 2. When the composite material layer 2 is compounded, the composite material is in a flowing state. If the holes are not blocked, the composite material may flow into the holes, and an obstacle will be formed after the composite material is solidified, affecting the normal use of the subsequent holes. Conventional covering devices for blocking holes are cylindrical rubber plugs or conical rubber plugs. Although these two types of rubber plugs are easy to install, they are easy to fall off during the subsequent processing of the plate body 1 after installation. The hole covering device of this embodiment is installed in the hole, and the slot 301 is an annular slot around the main body 3. The diameter of the bottom of the slot 301 is slightly larger than the diameter of the hole, so that the waist of the main body 3 is tightened in the hole, and the bottom of the slot 301 fits tightly against the inner wall of the hole, which has a better sealing effect.

[0043] Regarding the specific structural arrangement of the main body 3, the main body 3 of this embodiment includes a head 302 and a tail 303 connected to the upper and lower sides of the waist, and the area of ​​the head 302 on the side where the composite layer 2 is located is larger than the area of ​​the tail 303. By arranging the head 302 and the tail 303 on the hole position covering device, and making the area of ​​the head 302 larger than the area of ​​the tail 303, it is convenient for the user to quickly distinguish the two ends of the hole position covering device, and to correctly place the head 302 of the hole position covering device on the side of the plate body 1 used for composite materials. Secondly, the area of ​​the tail 303 is smaller than the area of ​​the head 302, which can also facilitate the user to remove the hole position covering device from the side of the plate body 1 that is composited with the composite layer 2, reduce the force required to remove the hole position covering device, and at the same time reduce the amount of material required for the tail end, thereby reducing the manufacturing cost of the covering device.

[0044] Specifically, the size of the head 302 of the main body 3 can be determined according to actual conditions, because the head 302 will play a role of occupying a place on the plate, so that after the composite layer 2 is finally formed, a through hole is formed at the opening of the hole of the plate body 1. According to the function to be achieved by the through hole, the structure is designed, and then the shape of the head 302 of the main body 3 is made corresponding to the structure. Exemplarily, the plate body 1 is used on the shell of the battery pack, and the hole is the mounting point hole position. The head 302 of the main body 3 can form a circular area without the composite layer 2 on the inner side wall of the battery pack shell and at the opening of the hole. The mounting part used to mount the battery pack shell can abut the plate body 1 in this circular area, and will not cause wear and damage to the composite layer 2.

[0045] In order to improve the use effect of the hole covering device, the head 302 and the tail 303 of the main body 3 are respectively constructed in a truncated cone shape. Constructing both the head 302 and the tail 303 in a truncated cone shape can make the edge of the hole covering device smoother and less likely to get caught or tripped with other objects. The tail 303 is truncated cone-shaped, and it is also easier to return to its original shape after being squeezed through the hole, which can better utilize the elasticity of the main body 3 and make the installation of the hole covering device more convenient. Of course, it is also possible to set the head 302 and / or the tail 303 to other shapes according to actual conditions, but the effect during use is not as good as the truncated cone structure.

[0046] In order to facilitate the disassembly of the hole covering device, the thickness of the head 302 of the main body 3 is greater than the thickness of the composite material layer 2 compounded on the plate body 1. If the thickness of the subject head 302 is small, when the composite material flows on the plate body 1, the head 302 of the main body 3 may be covered. After the composite material is solidified, the head 302 of the main body 3 will be buried in the composite material layer 2, making it difficult to remove the hole covering device later. Setting the thickness of the head 302 to be greater than the thickness of the composite material layer 2 compounded on the plate body 1 can make the end of the head 302 facing away from the plate body 1 higher when the composite material layer 2 is compounded on the plate body 1, and the flowing composite material will not flow to the top of the head 302, so that the head 302 of the main body 3 can smoothly form a through hole on the composite material layer 2, which is convenient for removing the hole covering device later.

[0047] In order to facilitate the installation and disassembly of the hole covering device, the thickness of the waist is smaller than the thickness of the plate body 1, that is, the width of the card slot 301 of the main body 3 is slightly smaller than the thickness of the plate body 1, so that the two groove walls of the card slot 301 can clamp the plate body 1 from both sides of the plate body 1 by relying on the elasticity of the main body 3, thereby enhancing the sealing effect of the main body 3 at the hole mouth, making it more difficult for the flowing composite material to flow into the hole.

[0048] As for the specific configuration of the composite material layer 2, this embodiment uses resin hot pressing on the plate body 1 to form the composite material layer 2. The composite material layer 2 is formed by hot pressing the resin on the plate body 1, and the molding effect is good, the properties are stable under high temperature conditions, and its good electrical insulation and corrosion resistance can ensure that the internal components of the battery pack are protected from erosion by the external environment, which helps to maintain a stable environment inside the battery pack.

[0049] As a preferred material for the main body 3, the main body 3 is made of rubber. The main body 3 is set to rubber, and the rubber raw material is easy to obtain, which can reduce the manufacturing material cost. The molding process of rubber is also very mature. For the structure of the main body 3 of this embodiment, the manufacturing difficulty is relatively low, and the yield rate of the main body 3 after manufacturing is high, which can also reduce the production cost. It can be understood that the material of the main body 3 can also be polyurethane elastomer, polyolefin elastomer, polyester elastomer, etc., as long as it has the required elasticity.

[0050] When the hole covering device of this embodiment is implemented, before the composite material layer 2 is composited, the tail 303 of the main body 3 is first compressed. After the tail 303 passes through the hole of the plate body 1, the tail 303 restores its shape by its own elasticity and clamps the plate body 1 together with the head 302. After that, the composite material layer 2 can be composited. The hole covering device is easy to disassemble. After the composite material operation is completed and the composite material layer 2 is cured, the main body 3 can be pushed from the tail 303 toward the composite material layer 2, so that the main body 3 can be separated from the plate body 1. The hole covering device is easy to disassemble.

[0051] Embodiment 2

[0052] The present embodiment relates to a battery pack shell, comprising a plate body 1 having a hole, a composite material layer being compounded on the plate body 1, and when the composite material layer is compounded on the plate body 1, a hole position covering device as described above is installed in the hole.

[0053] The holes on the battery pack shell of this embodiment can be any holes, such as mounting point holes. Before the composite layer is formed, a hole cover device is installed in the hole to seal the hole. When the composite layer is subsequently sandblasted, the main body is not easy to fall off, and the head of the main body can effectively protect the plate body 1, so that the sand particles will not directly impact the plate body 1. Compared with the battery pack shell processed by the conventional capping device, the processing quality of the battery pack shell of this embodiment is higher and the finished product appearance is more standard.

[0054] The above description is only a preferred 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 hole covering device, used to cover the holes on a plate when a composite material layer is laminated on the plate, characterized in that: The covering device comprises: The main body is made of elastic material, and a slot recessed inward is formed at the waist of the main body; when the main body blocks the hole, the inner wall of the slot is tightened in the hole.

2. The hole covering device according to claim 1, characterized in that: The main body comprises a head and a tail connected to the upper and lower sides of the waist, and the area of ​​the head located on the side where the composite material layer is located is larger than the area of ​​the tail.

3. The hole covering device according to claim 2, characterized in that: The head portion and the tail portion are respectively configured in a truncated cone shape.

4. The hole covering device according to claim 2, characterized in that: The thickness of the head is greater than the thickness of the composite material layer composited on the plate body.

5. The hole covering device according to claim 2, characterized in that: The thickness of the waist is smaller than the thickness of the plate body.

6. The hole covering device according to claim 1, characterized in that: The composite material layer is formed by hot pressing resin on the plate body.

7. The hole covering device according to any one of claims 1 to 6, characterized in that: The main body is made of rubber material.

8. A battery pack shell, comprising a plate body with holes, a composite material layer being compounded on the plate body, characterized in that: When the composite material layer is laminated on the plate body, the hole is equipped with a hole covering device as claimed in any one of claims 1 to 7.

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