A packaging box for cylindrical batteries that facilitates battery testing

Abstract

This utility model relates to a packaging box for cylindrical batteries that facilitates battery testing, belonging to the field of battery packaging box technology. It includes a box body for accommodating at least one cylindrical battery. The bottom and top surfaces of the box body correspond to the positive and negative terminals of the cylindrical battery, respectively. At least one measuring hole is provided on both the bottom and top surfaces of the box body. The position of the measuring hole corresponds one-to-one with the center position of the positive and negative terminals of the cylindrical battery, and the diameter of the measuring hole is only large enough to accommodate a measuring probe. It also includes a waterproof membrane covering the outer surface of the box body. This utility model achieves rapid measurement by pre-reserving measuring holes at the top and bottom of the box design, avoiding repeated battery removal and placement. Furthermore, by covering the box surface with a waterproof membrane, it effectively prevents the entry of debris and moisture, ensuring the reliability of battery transportation and long-term storage.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging box technology, and in particular to a packaging box for cylindrical batteries that facilitates battery testing. Background Technology

[0002] In the current era of rapid development in the new energy industry, cylindrical batteries have become core energy components in consumer electronics, power batteries, and other fields due to their advantages such as high energy density, stable discharge performance, and strong adaptability. Among them, models such as 18650, 21700, and 4680 have achieved large-scale mass production and widespread application. However, the transportation and storage of cylindrical batteries have long been limited by the technical bottlenecks of traditional packaging solutions. Multiple 18650, 21700, and 4680 cylindrical batteries are placed in a cardboard box, which is then packed into a carton for transportation and storage. This method has two problems: first, the cardboard box absorbs moisture during storage, causing the positive and negative terminals to rust because the cardboard box is in direct contact with the battery's positive and negative terminals; second, the battery is removed for voltage and internal resistance testing, and then put back after testing, which is extremely time-consuming and labor-intensive.

[0003] To address the existing problems, current solutions include using oil-absorbing paper, but the effect is not good. Oil-absorbing paper cannot prevent water molecules in the air from continuously penetrating the cardboard box, and once saturated, it easily releases moisture in the reverse direction. Some solutions use sealed bags with desiccants, but the cost is too high. Some solutions involve increasing the height of the cardboard box and adding partitions, but this only improves the upper positive electrode side and does not improve the bottom negative electrode side, and it also makes it more inconvenient to take out and put in the battery. Based on this, we propose a packaging cardboard box for cylindrical batteries that facilitates battery testing. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a cylindrical battery packaging box that facilitates battery testing. By reserving measurement holes at the top and bottom of the box during the design process, the purpose of rapid measurement can be achieved, avoiding the need for repeated removal and insertion of the battery.

[0005] To achieve the above objectives, this utility model provides a packaging box for cylindrical batteries that facilitates battery testing. The box includes a box body for accommodating at least one cylindrical battery. The bottom and top surfaces of the box body correspond to the positive and negative terminals of the cylindrical battery, respectively. At least one measuring hole is provided on both the bottom and top surfaces of the box body. The position of the measuring hole corresponds one-to-one with the center position of the positive and negative terminals of the cylindrical battery, and the diameter of the measuring hole is only large enough to accommodate a measuring probe.

[0006] Preferably, it also includes a waterproof membrane, which covers the outer surface of the cardboard box body to prevent moisture and debris from entering the interior of the cardboard box body.

[0007] Preferably, the waterproof membrane is, but is not limited to, PE membrane, PU membrane, or OPP membrane.

[0008] Preferably, the interior of the cardboard box body is provided with partitions, which divide the interior space of the cardboard box body into several independent storage areas. Each storage area is used to place a cylindrical battery, and each storage area has a measuring hole corresponding to the projection center of the bottom surface and the top surface of the cardboard box.

[0009] Preferably, the arrangement of the plurality of accommodating areas is an array, including but not limited to a 3×3 array and a 4×4 array.

[0010] Preferably, the diameter of the measuring hole is in the range of 1-5mm, and the edge of the measuring hole wall is treated with a rounded transition to form a smooth structure.

[0011] The technical solution provided by this utility model can include the following beneficial effects:

[0012] 1. In this example, by pre-reserving measurement holes at the top and bottom of the cardboard box during the design, the test can be completed without disassembling the cardboard box or removing the battery. The probe can be directly inserted through the measurement hole to contact the positive and negative terminals of the battery, thus avoiding the need to repeatedly remove and put the battery in, and achieving the purpose of rapid measurement.

[0013] 2. By adding a waterproof film to the surface of the cardboard box, it is possible to effectively prevent foreign matter and moisture from entering, thus ensuring the reliability of battery transportation and long-term storage.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0015] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention under the partition implementation method;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model under the second embodiment of the partition;

[0018] Figure 3 This is a schematic diagram of the structure of the partition of this utility model in one embodiment;

[0019] Figure 4 This is a cross-sectional structural diagram of the paper box body of this utility model;

[0020] Figure 5 This is a design schematic diagram of the present invention;

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] 1. Cardboard box body; 2. Cardboard box bottom; 3. Cardboard box top; 4. Measuring hole; 5. Waterproof membrane; 6. Divider; 7. Cardboard box four sides. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0024] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0025] See Figures 1-5 As shown, this utility model proposes a packaging box for cylindrical batteries that facilitates battery testing. The box includes a box body 1, which is used to hold at least one cylindrical battery. The box body 1 consists of a bottom surface 2, a top surface 3, and four sides 7. The top surface 3 can be designed with a simple snap-fit ​​structure (such as a folded edge) to achieve opening and closing sealing of the box body 1, while preventing dust and moisture from entering. The bottom surface 2 and top surface 3 of the box body 1 correspond to the positive and negative terminals of the cylindrical battery, respectively. The bottom surface 2 and top surface 3 of the paper box of body 1 are each provided with at least one measuring hole 4. The position of the measuring hole 4 corresponds one-to-one with the center position of the positive and negative terminals of the cylindrical battery. The diameter of the measuring hole 4 is only large enough to accommodate the measuring probe to be inserted, so as to realize contact detection of the positive and negative terminals of the cylindrical battery. The diameter of the measuring hole 4 is 1-5mm, and the edge of the hole wall of the measuring hole 4 is rounded to form a smooth structure. The radius of the arc of the smooth structure is 0.5-2mm, so as to avoid scratching the probe surface during the insertion or removal of the measuring probe.

[0026] See Figures 1-2 as well as Figure 4As shown, the packaging box also includes a waterproof membrane 5, which covers the outer surface of the box body 1 to prevent moisture and debris from entering the box body 1 and protect the cylindrical battery inside. The waterproof membrane 5 is selected from one of the waterproof films such as PE (polyethylene) film, PU (polyurethane) film, OPP (oriented polypropylene) film, PET film, and EVA film. Among them, PE film is a more common waterproof membrane 5. The thickness of PE film is 0.05-0.2mm, which ensures waterproof and debris-proof performance. PE film has excellent chemical stability, which can not only effectively isolate water molecules, but also resist the corrosion of most acid and alkali substances, preventing corrosive components in the external environment from contacting the box body 1 and affecting the internal battery. At the same time, PE film has good flexibility and extensibility. When covering the box body 1, it can fit tightly to the corners, creases and other complex structures of the box. Even if the box is slightly squeezed or folded during transportation, the PE film is not easy to break and maintains a complete protective state.

[0027] The interior of the cardboard box body 1 is provided with partitions 6, which divide the internal space of the cardboard box body 1 into several independent storage areas. Each storage area is used to place a cylindrical battery, and each storage area has a measuring hole 4 corresponding to the projection center of the bottom surface 2 and the top surface 3 of the cardboard box, so as to realize the independent detection of each cylindrical battery. The width of the partitions 6 between two adjacent storage areas is 2-8mm to ensure the structural strength of the partitions 6 and to prevent adjacent cylindrical batteries from colliding with each other.

[0028] The arrangement of several accommodating areas is in an array manner, including but not limited to 3×3 array and 4×4 array.

[0029] The design for the 6-bar partition includes, but is not limited to, the following two:

[0030] Implementation Method 1:

[0031] See Figure 1 and Figure 3 As shown in the figure, the partition 6 is integrally formed (mostly made of soft material). Each cardboard box has one or two partitions 6. The partition 6 has multiple cylindrical battery placement cavities. The bottom of the placement cavity has a through hole corresponding to the measuring hole 4. In use, one partition 6 can be placed directly on the bottom surface 2 of the cardboard box body 1. When the top surface 3 of the cardboard box is closed, one partition 6 can also be attached to the inner wall of the top surface 3 of the cardboard box to cover it, so as to block and protect the top and bottom of the cylindrical battery.

[0032] Implementation Method Two:

[0033] See Figure 2 As shown in the figure, the divider 6 is composed of horizontal and vertical strips (the strips are made of soft materials such as foam, plastic, etc.). When in use, the divider 6 can be placed directly inside the cardboard box body 1 to separate the various storage areas.

[0034] See Figure 5 As shown (using a 3x3 array design as an example), the top image is the unfolded diagram of the cardboard box, i.e., the initial design drawing of the cardboard box, which can be used after folding. Each square area formed by the dotted lines in the middle image can hold one battery (3x3 array). This does not mean that the battery arrangement can only be a 3x3 array, and that placing batteries in the dotted lines... Figure 2 The 6th partition, or placed directly as Figure 1 The small round hole (measuring hole 4) in the bottommost diagram of the partition 6 is located on the bottom surface 2 and top surface 3 of the cardboard box, and is located at the center of the positive and negative terminals of the battery.

[0035] The following instructions can be given during the actual production process:

[0036] Step 1: When designing the cardboard box, make a small hole (measuring hole 4) at the corresponding position of the positive and negative terminals of the battery. The size of the hole should be large enough to allow the measuring probe to be inserted.

[0037] Step 2: Wrap the cardboard box completely with a waterproof membrane (such as PE film). This prevents foreign objects from entering the cardboard box through the small holes, completely isolates moisture from the cardboard box, and facilitates automated production, ensuring the reliability of the battery during transportation and storage.

[0038] Step 3: During measurement, simply remove the top and bottom waterproof membranes 5 and insert the measuring probe to complete the test, avoiding the tedious steps of removing the battery for measurement and then putting it back in.

[0039] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0040] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A packaging box for cylindrical batteries that facilitates battery testing, characterized in that, The device includes a cardboard box body (1) for accommodating at least one cylindrical battery. The bottom surface (2) and top surface (3) of the cardboard box body (1) correspond to the positive and negative terminals of the cylindrical battery, respectively. At least one measuring hole (4) is provided on both the bottom surface (2) and top surface (3) of the cardboard box body (1). The position of the measuring hole (4) corresponds one-to-one with the center position of the positive and negative terminals of the cylindrical battery. The diameter of the measuring hole (4) is only large enough to accommodate the insertion of a measuring probe.

2. The cylindrical battery packaging box for easy battery testing according to claim 1, characterized in that: It also includes a waterproof membrane (5), which covers the outer surface of the cardboard box body (1) to prevent moisture and debris from entering the interior of the cardboard box body (1).

3. The cylindrical battery packaging box for easy battery testing according to claim 2, characterized in that: The waterproof membrane (5) may be, but is not limited to, PE membrane, PU membrane, or OPP membrane.

4. The cylindrical battery packaging box for easy battery testing according to claim 1, characterized in that: The interior of the cardboard box body (1) is provided with partitions (6), which divide the interior space of the cardboard box body (1) into several independent storage areas. Each storage area is used to place a cylindrical battery, and each storage area has a measuring hole (4) at the projection center of the bottom surface (2) and the top surface (3) of the cardboard box.

5. The cylindrical battery packaging box for easy battery testing according to claim 4, characterized in that: The arrangement of some of the accommodating areas is in an array manner, including but not limited to 3×3 array and 4×4 array.

6. The cylindrical battery packaging box for easy battery testing according to claim 1, characterized in that: The diameter of the measuring hole (4) is 1-5 mm, and the edge of the measuring hole (4) is formed by a rounded transition to create a smooth structure.

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