Packaging structure and packaging protection piece

Abstract

The utility model relates to the field of lithium ion battery packaging, and discloses a packaging structure and a protection piece suitable for packaging. The protective part comprises at least one protective layer, an air channel and a plurality of independent air bags communicated with the air channel are arranged on the protective layer, the air channel is provided with a pair of external air inlets, a one-way air valve is arranged in a connecting channel of the air channel and each air bag, and the one-way air valves are used for allowing air to flow into the air bags and preventing the air from flowing into the air channels from the air bags. The air bags and the air passages are respectively connected together to form a tiled protective layer, a sealing belt connected with the two air bags is arranged between any two adjacent air bags, and when each air bag is in an inflated state, the thickness of the protective layer is equal to the bulging height of the air bag. In the carrying, transporting and storing processes of the lithium ion battery pack, the protection effect on the lithium ion battery pack can be improved by applying the technical scheme, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of transportation and storage of commodities, in particular to the field of safety design of transportation and storage of lithium ion batteries, and more particularly to a packaging structure and a packaging protective piece. Background Art

[0002] As batteries are used more and more widely, especially lithium-ion batteries, more and more devices are using lithium-ion batteries, and the requirements for the transportation safety and storage safety of lithium-ion battery packs are becoming higher and higher.

[0003] The inventors found in the process of researching the present utility model that lithium-ion battery packs inevitably have the risk of falling and bumping during handling and transportation, which can easily cause scratches on the surface of the battery cells, and may further cause the battery pack to short-circuit and catch fire, resulting in fire and explosion, posing a major safety hazard.

[0004] In order to reduce the risk of battery packs falling or bumping, the prior art adopts the method of filling the battery pack packaging box with foaming materials to protect the battery pack. The inventors found in the process of carrying out the utility model that the prior art has the disadvantages of large space occupied by the materials, heavy weight and poor protection effect. Summary of the invention

[0005] One of the purposes of the embodiments of the present utility model is to provide a packaging structure and a packaging protective member. During the handling, transportation and storage of lithium-ion battery packs, the application of this technical solution is conducive to improving the protection effect of lithium-ion battery packs and improving safety.

[0006] In a first aspect, an embodiment of the present invention provides a packaging protection member, comprising: at least one protection layer, an air channel and a plurality of independent air bags connected to the air channel are provided on the protection layer,

[0007] The airway has a pair of external air inlets, and a one-way air valve is respectively arranged in the connecting passage between the airway and each of the air bags.

[0008] The one-way air valve is used to allow gas to flow into the air bag and to prohibit gas from flowing from the air bag to the airway.

[0009] The air bags and the air passages are connected together to form a flat protective layer. Between any two adjacent air bags is a sealing belt connected to the two air bags. When the air bags are in an inflated state, the thickness of the protective layer is the bulging height of the air bags.

[0010] Optionally, each of the air bags is rectangular, and when in an inflated state, each of the air bags is a strip-shaped air column bag.

[0011] Optionally, the air bags are arranged in parallel on a plane to form a protective layer.

[0012] Optionally, the air channel is located at the same end of each of the air bags, perpendicular to each of the air bags, and the other end of each of the air bags is a closed end.

[0013] Optionally, the air channel and each of the air bags are formed on two plastic films facing each other.

[0014] A plurality of sealing bands are formed on the two plastic films to seal the two plastic films together.

[0015] The areas between the sealing strips and separated from the two plastic films are the air bags.

[0016] Optionally, a thinning area having the same length as the sealing belt is provided on the sealing belt between any two adjacent air bags, and the thickness of the thinning area is thinner than the thickness of the sealing belt.

[0017] Optionally, each of the air bags is filled with carbon dioxide gas.

[0018] In a second aspect, an embodiment of the present invention provides a packaging structure, comprising:

[0019] A packaging box, in which a plurality of products or packages containing products are placed,

[0020] The protective layers of a plurality of the protective elements described above are respectively spaced between the product or the package containing the product and the packaging box, and the air bags of the protective layers are in an inflated state.

[0021] Optionally, at least one layer of the protective layer is laid on the bottom, surrounding side walls and top of the packaging box, respectively, and a rigid flat plate is spaced between the protective layer on the top and the top cover of the packaging box.

[0022] Optionally, the protective layer is further spaced between stacked groups of the products or packages containing the products. At least one layer of the protective layer is laid on the bottom, surrounding side walls and top of the packaging box, respectively, and a rigid flat plate is further spaced between the protective layer on the top and the top cover of the packaging box.

[0023] As can be seen from the above, one air channel of the protective member of this embodiment is connected to multiple air bags, and when in use, multiple air bags can be inflated at the same time, which is conducive to improving work efficiency. In addition, a one-way air valve is set in the connecting channel between each air bag and the air channel, and the gas is locked in the air bag after the inflation is stopped, so that each air bag is automatically sealed, which is convenient to operate.

[0024] Compared with the technical solution of using sponge to fill the packaging box, the protective body of the protective layer of this embodiment is connected together to form a plurality of inflated air bags arranged in a layer. This protective component has the advantages of light weight, light pressure on the product, and convenient transportation; and the air tightness of each air bag is completely independent. Even if one or some air bags are damaged and fail, it will not affect other air bags. Other air bags can continue to provide protection for the product, and the protective performance is more reliable.

[0025] Furthermore, the present embodiment adopts carbon dioxide gas as the filling gas. Compared with the technical solution of adopting air as the filling gas, the adoption of carbon dioxide can further improve the flame retardant performance of the present protective element. When applied to the packaging of lithium-ion battery packs, when a battery therein causes the battery pack to heat up and catch fire due to an internal failure, the air bag is heated and releases the charged carbon dioxide, which plays a role in extinguishing the fire, thereby ensuring the safety of the lithium-ion battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute an improper limitation of the present invention.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of each air bag of the protective layer provided in Example 1 of the utility model when in an inflated state;

[0028] Figure 2 for Figure 1 The front and rear view structural diagram of the protective layer shown;

[0029] Figure 3 for Figure 2 A schematic diagram of a partially enlarged structure of a portion B in FIG.

[0030] Figure 4 for Figure 1 The left and right structural schematic diagrams of the protective layer shown;

[0031] Figure 5 for Figure 1 A schematic diagram of the top view of the protective layer shown;

[0032] Figure 6 for Figure 2 AA cross-sectional structural diagram;

[0033] Figure 7 The utility model is provided for use in product packaging Figure 1 Schematic diagram of the application principle of the protective layer shown;

[0034] Figure 8 A schematic diagram of a structure in which a product is placed in a packaging box provided with a protective layer according to an embodiment of the utility model;

[0035] Fig. 9 A schematic diagram of the structure for laying an intermediate protective layer when the products are stacked to a certain extent;

[0036] Fig.10 A schematic diagram of the structure for continuing to place products on the middle protective layer;

[0037] Fig.11 This is a schematic diagram of the appearance structure of the packaged product packaging box.

[0038] Description of reference numerals:

[0039] 1: airway; 2: air bag; 3: sealing belt; 4: one-way air valve; 5: thinning area; 6: air inlet; 7: protective layer; 8: cover plate;

[0040] 9: Packing box; 10: Product packaging. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0042] Examples of embodiments of the present invention described in detail below are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0043] The embodiments described below with reference to the drawings attached to this specification are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships 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 should not be construed as limiting the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0046] See also Figure 1-11 .

[0047] This embodiment provides a protective member suitable for packaging a lithium-ion battery pack, the protective member comprising at least one protective layer 7, at least one air channel 1 being formed on each protective layer 7, and each air channel 1 being connected to a plurality of air bags 2. The structure of the protective layer 7 is schematically described below by taking an air channel 1 and a plurality of air bags 2 connected to the air channel 1 as an example.

[0048] One end of the air channel 1 is a pair of external air inlets 6, which can be connected to an air pump. Each air bag 2 is connected to the air channel 1, and each air bag 2 is independent, that is, if any air bag 2 is damaged and leaks, it will not affect the air tightness of other air bags 2. Each air bag 2 and the air channel 1 are connected together to form a flat protective layer 7. Between any two adjacent air bags 2 is a sealing belt 3 combined with the air bags 2 on both sides, and the sealing belt 3 seals the sealing bags on both sides.

[0049] Before use, the protective element is in a non-inflated state, and each air channel 1 and air bag 2 is in the form of a very thin sheet, which can be folded or rolled up, occupying a small space and facilitating the transportation and storage of materials.

[0050] A one-way air valve 4 is preset in the connection channel between the airway 1 and each air bag 2, wherein the air flow direction of the one-way air valve 4 only supports the gas to enter the air bag 2 from the airway 1, and prohibits the gas in the air bag 2 from flowing back into the airway 1.

[0051] When an air pump is connected to the air inlet 6 to pump gas into the airway 1, the airflow passes through the airway 1 and then through each one-way air valve 4 to enter each air bag 2 respectively. Each air bag 2 is inflated respectively. After being inflated to a predetermined state, the air pump stops inflating. Each one-way air valve 4 locks the gas in each air bag 2 in each air bag 2. Each air bag 2 maintains an inflated shape. Each inflated air bag 2 forms a layer of expanded air bag 2 array, namely a protective layer 7. The thickness of the protective layer 7 is the inflated height of the air bag 2.

[0052] As can be seen from the above, one air channel 1 of the protective member of this embodiment is connected to multiple air bags 2. When in use, multiple air bags 2 can be inflated at the same time, which is conducive to improving work efficiency. In addition, a one-way air valve 4 is set in the connecting channel between each air bag 2 and the air channel 1. After stopping inflation, the gas is locked in the air bag 2 to achieve automatic sealing of each air bag 2, which is convenient for operation.

[0053] The application principle of the protective element of this embodiment is that, according to the size of the current packaging box 9 and the required flat slope area size of the protective layer 7, the sealing belt 3 between the air bags 2 is cut without damaging the air tightness of each air bag 2. The air pump is connected to the air inlet 6 of the airway 1, and the predetermined filling gas is pumped into each air bag 2 to obtain a protective layer 7 composed of each bulged air bag 2. The thickness of the protective layer 7 is the bulging height of the air bag 2 (the bag film thickness of the air bag 2 is negligible). According to the protection needs, the protective layer 7 is laid between the product package 10 (or product) containing the product and the inner wall of the packaging box 9, for example, but not limited to, a layer of protective layer 7 is laid on the bottom of the packaging box 9 and the inner wall around the packaging box 9. It is also possible to lay two or more layers of protective layers 7 according to the gap thickness of the inner wall of the product package 10 and the protection needs, so as to improve the protection strength of the packaging on the one hand, and fill the gap on the other hand to prevent the product package 10 in the packaging box 9 from shaking and bumping.

[0054] The product packaging 10 is, for example but not limited to, a packaging containing a lithium-ion battery pack. The use of the protective component in the packaging of the lithium-ion battery pack can reduce the external impact strength, limit the position of each battery pack in the packaging box 9, and avoid safety hazards such as battery pack short circuit, fire and explosion caused by collision of battery components. It can be seen that the use of the protective component is conducive to improving the transportation and handling safety of the battery pack.

[0055] In summary, compared with the technical solution of using a sponge-filled packaging box 9, the protective body of the protective layer 7 of the present embodiment is connected together to form a plurality of inflated air bags 2 arranged in a layer. The protective component has the advantages of light weight, light pressure on the product packaging 10, and convenient transportation; and the air tightness of each air bag 2 is completely independent, even if one or some air bags 2 are damaged and fail, it will not affect other air bags 2, and other air bags 2 can continue to provide protection for the product packaging 10, and the protective performance is more reliable.

[0056] This embodiment uses carbon dioxide gas as the filling gas. Compared with the technical solution of using air as the filling gas, the use of carbon dioxide can further improve the flame retardant performance of the protective component. When applied to the packaging of lithium-ion battery packs, when a battery therein causes the battery pack to heat up and catch fire due to an internal failure, the air bag 2 is heated and releases the charged carbon dioxide, which plays a role in extinguishing the fire, thereby ensuring the safety of the lithium-ion battery pack.

[0057] In addition to laying the protective layer 7 on the bottom and inside the four sides of the packaging box 9, a protective layer 7 (or multiple protective layers 7) composed of multiple bulging air bags 2 combined together by sealing tapes 3 can be further laid on the top of the product packaging 10, and a lightweight, rigid flat plate (commonly known as a cover plate 8) is further covered on the top surface of the top protective layer 7, and then the top of the packaging box 9 is sealed to obtain a fully protected packaging structure. The use of this technical solution can further improve the protection of the product packaging 10, which is conducive to providing more comprehensive protection for the product during the stacking and transportation of the packaging box 9.

[0058] In addition, when the product packages 10 (or products) are stacked to a certain height, one or more protective layers 7 composed of inflated air bags 2 are laid on the top of the product packages 10, and then the product packages 10 are further stacked on the protective layers 7. Similarly, in the packaging box 9, protective layers 7 composed of inflated air bags 2 can be further placed between the vertical sides of the product packages 10 in the packaging box 9, and each protective layer 7 divides the product packages 10 in the packaging box 9 into multiple sections, providing better protection for the products.

[0059] The protective layer 7 of the protective member of this embodiment can be made of a large piece of plastic film, which includes at least two layers facing each other from top to bottom. The plastic film is heat-sealed according to the preset airway 1 and the arrangement and connection relationship of each air bag 2, so that the two plastic films pressed and tightly attached together at high temperature are hot-melt sealed and combined into one body to form a heat-sealing belt, which serves as the sealing edge of the air bag 2, the sealing edge of the airway 1, the sealing belt 3 between the air bags 2 and the air bags 2, and the sealing belt 3 between the airway 1 and the air bag 2 (with a connection channel pre-installed with a one-way air valve 4). The airway 1 and each air bag 2 are formed in the upper and lower separated areas of the relative plastic film between the heat-sealing belts.

[0060] When preparing the protective part, a large-area protective layer 7 can be prepared in advance. When it is specifically used for packaging, the required area can be cut out along the sealing belt 3 between the air bags 2 according to the current required size and can be used for current use, which is very convenient.

[0061] As an illustration of this embodiment, each airbag 2 may be designed as a rectangle with a certain length but is not limited thereto. When the airbag 2 is in an inflated state, the airbag 2 bulges into a long columnar shape.

[0062] It is preferred but not limited to that the air bags 2 are arranged in parallel and in rows on the protective layer 7. For example, one air bag 2 is arranged on one protective layer 7. Two air bags 2 or more air bags 2 may also be arranged. Each air bag 2 is connected to an air channel 1. The air channel 1 is located at one end of the air bag 2, and the other end of the air bag 2 is a closed end.

[0063] For example, but not limited to, the length and shape of each exhaust bag 2 are the same. Preferably, but not limited to, each exhaust bag 2 and the air channel 1 connected thereto are distributed vertically on the protective layer 7. After inflation, the rows of air bags 2 are all bulged into parallel strip-shaped air columns, and the protective layer 7 has a strong rigidity along the length direction of the strip-shaped air column and is not easy to bend and deform. It can be seen that with the structure of the parallel rows of strip-shaped air bags 2, the protective layer 7 in the inflated state is not easy to deform and has the protective strength of a lecture script.

[0064] As an illustration of this embodiment, a thinning area 5 is further provided on the sealing belt 3 between each adjacent air bag 2. The length of the thinning area 5 is the same as the length of the sealing belt, and the thickness of the thinning area 5 is thinner than the thickness of the sealing belt 3, thereby forming a V-shaped recessed belt in the middle of the sealing belt 3, providing a cutting mark for the user. The user can cut along the thinning area 5 to avoid damage to the air bag 2 due to cutting deviation, which is convenient for users to use.

[0065] The airbag 2 and the airway 1 in the protective part of the present embodiment can be a single-layer plastic film structure, and can also be designed as a double-layer plastic film structure. With the double-layer plastic film structure, if the outer plastic film of the inflated airbag 2 is punctured, the inner plastic film can continue to provide sealing for the inflated airbag 2, thereby improving the durability and reliability of the airbag 2 and improving the protection reliability of the product.

[0066] In addition, this embodiment can also adjust the thickness of the protective layer 7 and the degree of protection of the protective element by controlling the degree of inflation, thereby further facilitating people's use, adapting to different packaging gaps, and improving application flexibility.

[0067] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A packaging protection member, characterized in that it comprises: at least one protective layer, on which an airway and a plurality of independent air bags communicating with the airway are provided, The airway has a pair of external air inlets, and a one-way air valve is respectively arranged in the connecting passage between the airway and each of the air bags. The one-way air valve is used to allow gas to flow into the air bag and to prohibit gas from flowing from the air bag to the airway. The air bags and the air passages are connected together to form a flat protective layer. Between any two adjacent air bags is a sealing belt connected to the two air bags. When the air bags are in an inflated state, the thickness of the protective layer is the bulging height of the air bags.

2. The packaging protection member according to claim 1, characterized in that: Each of the air bags is rectangular in shape, and when in an inflated state, each of the air bags is a strip-shaped air column bag.

3. The packaging protection member according to claim 2, characterized in that: The air bags are arranged in parallel on a plane to form a protective layer.

4. The packaging protection member according to claim 3, characterized in that: The air channel is located at the same end of each of the air bags and is perpendicular to each of the air bags. The other end of each of the air bags is a closed end.

5. The packaging protection member according to claim 1, characterized in that: The air channel and each of the air bags are formed on two plastic films facing each other. A plurality of sealing bands are formed on the two plastic films to seal the two plastic films together. The areas between the sealing strips and separated from the two plastic films are the air bags.

6. The packaging protection member according to claim 1, characterized in that The sealing belt between any two adjacent air bags is also provided with a thinning area with the same length as the sealing belt, and the thickness of the thinning area is thinner than the thickness of the sealing belt.

7. The packaging protection member according to any one of claims 1 to 6, characterized in that: Each of the air bags is filled with carbon dioxide gas.

8. A packaging structure, characterized in that: include: A packaging box, in which a plurality of products or packages containing products are placed, The protective layers of the protective members described in any one of the plurality of claims 1 to 7 are respectively spaced between the product or the package containing the product and the packaging box, and the air bags of the protective layers are in an inflated state.

9. The packaging structure according to claim 8, characterized in that: At least one layer of the protective layer is laid on the bottom, surrounding side walls and top of the packaging box respectively, and a rigid flat plate is spaced between the protective layer on the top and the top cover of the packaging box.

10. The packaging structure according to claim 8 or 9, characterized in that: The protective layer is also spaced apart between stacked groups of the products or packages containing the products.

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