battery

Abstract

The utility model provides a kind of battery, the battery includes electric core unit and insulating protective paper, the insulating protective paper has label function: the insulating protective paper includes ink layer, substrate layer and adhesive layer sequentially laminated;The insulating protective paper is wrapped the electric core unit, the adhesive layer is adhered in the surface of the electric core unit, to form battery.The utility model in, use the insulating protective paper with label function replaces the insulating protective paper and label paper of existing battery, process than existing simple;Use insulating protective paper as the shell of battery, can print battery information directly on insulating protective paper, provide convenience for user to identify the information of battery, it is convenient for user to classify battery;When realizing same function, the thickness of the insulating protective paper of the present application is thinner than the total thickness of existing insulating protective paper and label paper, to realize the thickness of the battery of the present application is thinner than the thickness of existing battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery. Background Technology

[0002] With the rapid development of new energy batteries and consumer electronics, batteries such as lithium-ion batteries are widely used in consumer electronics, and battery technology is also rapidly improving to meet people's needs for electronic products.

[0003] Batteries are mainly assembled from battery cells and insulating protective paper. A battery cell includes the cell body, which is wrapped in insulating protective paper. However, most existing insulating protective papers consist of a substrate layer and an adhesive layer. To facilitate battery information identification and subsequent user classification, a labeling process is added to the insulating protective paper. This complicates the battery manufacturing process, increases the battery thickness, limits the cell capacity, and fails to meet the design requirements for the overall battery size. Summary of the Invention

[0004] This invention provides a battery that solves the problems of existing batteries having complex manufacturing processes, increasing battery thickness, limiting cell capacity, and failing to meet the design requirements for the overall maximum size of the battery.

[0005] A battery includes a battery cell and an insulating protective paper, the insulating protective paper having a labeling function: The insulating protective paper comprises an ink layer, a substrate layer, and an adhesive layer stacked sequentially. The insulating protective paper wraps the battery cell unit, and the adhesive layer is bonded to the surface of the battery cell unit to form a battery.

[0006] Preferably, the thickness of the insulating protective paper is 0.027-0.033 mm.

[0007] Preferably, the insulating protective paper is bonded together or at least partially overlapped on two sides along its length.

[0008] Preferably, the battery cell unit includes a plug wire, a PCBA board, and a battery cell body; One end of the plug wire is soldered to the PCBA board, and the PCBA board is connected to the tab of the battery cell body; The insulating protective paper wraps around the battery cell body and is adhered to the surface of the battery cell body.

[0009] Preferably, the battery further includes insulating tape, which is wrapped around one end of the plug wire, the surface of the tabs of the PCBA board and the cell body; and at least a portion of the insulating tape is wrapped by the insulating protective paper.

[0010] Preferably, the battery cell body is a rectangular battery cell, and the two sides of the insulating protective paper along the length direction of the insulating protective paper abut or at least partially overlap and adhere to any one of the wide side, narrow side and arc transition surface of the rectangular battery cell.

[0011] The battery provided in this embodiment uses insulating protective paper with labeling function to replace the existing insulating protective paper and label paper, making the process simpler than the existing ones. Using insulating protective paper as the battery shell allows battery information to be directly printed on it, providing convenience for users to identify battery information and facilitating battery classification. Since the existing insulating protective paper has a structure of: substrate layer + adhesive layer, and the label paper has a structure of: substrate layer + adhesive layer, while the insulating protective paper of this application has a structure of: ink layer + substrate layer + adhesive layer, the thickness of the insulating protective paper in this application is thinner than the total thickness of the existing insulating protective paper and label paper when achieving the same function. This allows the battery to be thinner than existing batteries, increasing the battery cell capacity without changing the size and cell design parameters, thereby meeting the design requirements for the overall maximum battery size. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is an exploded view of a battery in one embodiment of this utility model; Figure 2 This is a cross-sectional view of the insulating protective paper in one embodiment of this utility model; Figure 3 This is a semi-finished product drawing of a battery according to one embodiment of this utility model; Figure 4 This is an axonometric view of a battery in one embodiment of the present invention; Figure 5 This is a bottom view of the battery in one embodiment of the present invention.

[0014] The components are: 1. Battery cell unit; 11. Plug wire; 12. PCBA board; 13. Battery cell body; 2. Insulating protective paper; 21. Ink layer; 22. Substrate layer; 23. Adhesive layer; 3. Release paper; 4. Insulating adhesive paper. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0016] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0018] This utility model provides a battery, referring to... Figures 1-4 The battery includes a cell unit 1 and an insulating protective paper 2: the insulating protective paper 2 has a labeling function; the insulating protective paper 2 includes an ink layer 21, a substrate layer 22 and an adhesive layer 23 stacked in sequence; the insulating protective paper 2 wraps the cell unit 1, and the adhesive layer 23 is bonded to the surface of the cell unit 1 to form a battery.

[0019] As an example, the battery is, but is not limited to, a lithium-ion battery, specifically comprising a cell unit 1 and an insulating protective paper 2, the insulating protective paper 2 serving a labeling function; the insulating protective paper 2 includes an ink layer 21, a substrate layer 22, and an adhesive layer 23 stacked sequentially; the ink layer 21 is used to print battery information, the substrate layer 22 is, but is not limited to, a black PI film, specifically possessing excellent thermal stability, chemical stability, and mechanical strength, and the adhesive layer 23 is an adhesive that can bond the substrate layer 22 to the surface of the cell unit 1. During battery manufacturing, the adhesive layer 23 is bonded to the surface of the cell unit 1 to achieve the purpose of wrapping the insulating protective paper 2 around the cell unit 1 and bonding it to the surface of the cell unit 1, thus forming the battery and facilitating battery manufacturing. This design uses insulating protective paper 2 with labeling function to replace the existing battery insulating protective paper 2 and label paper, simplifying the process. Using insulating protective paper 2 as the battery casing allows battery information to be directly printed on it, facilitating user identification and categorization. Since the existing insulating protective paper 2 has a structure of substrate layer + adhesive layer, and the label paper has a structure of substrate layer + adhesive layer, the insulating protective paper 2 in this application has a structure of ink layer 21 + substrate layer 22 + adhesive layer 23. To achieve the same function, the thickness of the insulating protective paper 2 in this application is thinner than the total thickness of the existing insulating protective paper 2 and label paper, resulting in a thinner battery than existing batteries. This allows for increased battery cell capacity without changing the dimensions and cell design parameters, thus meeting the overall maximum battery size design requirements.

[0020] In one embodiment, reference is made to Figures 1-5 The thickness of the insulating protective paper 2 is 0.027-0.033mm.

[0021] As an example, using insulating protective paper 2 as the battery casing, with its thickness limited to 0.027-0.033mm, changes the traditional specification of 0.08-0.15mm thick insulating protective paper 2. This effectively reduces the thickness of the battery casing, increasing the battery cell capacity without changing the dimensions and cell design parameters, thus meeting the design requirements for the overall maximum battery size. For example, using 0.03mm insulating protective paper 2 is 0.07mm thinner than the commonly used 0.1mm thick insulating protective paper 2. When using insulating protective paper 2 to wrap the cell unit 1, there are a maximum of three layers of insulating protective paper 2 in the battery thickness direction (see reference). Figure 5 This effectively reduces the battery casing thickness by 0.21mm, maximizing the size design of the battery cell unit 1 and effectively meeting the overall maximum size design requirements of the battery. The insulating protective paper 2, with a thickness of 0.027-0.033mm, is softer, less rigid, and easier to apply during production.

[0022] In one embodiment, reference is made to Figure 2 Release paper 3 is adhered to the adhesive layer 23 of the insulating protective paper 2, and the release paper 3 has a protective function. When the insulating protective paper 2 is not used, the release paper 3 is adhered to the adhesive layer 23, which can effectively protect the adhesive layer 23; when the insulating protective paper 2 is used, the release paper 3 is peeled off, and then the adhesive layer 23 is adhered to the surface of the battery cell unit 1.

[0023] In one embodiment, reference is made to Figure 3 , Figure 4 and Figure 5 The insulating protective paper 2 is bonded together by abutting or at least partially overlapping the two sides along its length.

[0024] As an example, two arrangement schemes for the insulating protective paper 2 are introduced. The first scheme involves the insulating protective paper 2 abutting against its two sides along its length. In this case, the length of the insulating protective paper 2 is equal to the circumferential length of the battery cell 1, saving on the amount of insulating protective paper 2 used while meeting battery manufacturing requirements and reducing costs. The second scheme involves the insulating protective paper 2 at least partially overlapping and bonding its two sides along its length. In this case, the length of the insulating protective paper 2 is greater than the circumferential length of the battery cell 1, ensuring that the surface of the battery cell 1 is not exposed during battery manufacturing, thus improving the battery's sealing performance.

[0025] In one embodiment, reference is made to Figure 1 , Figure 3 and Figure 4 The battery cell unit 1 includes a plug wire 11, a PCBA board 12, and a battery cell body 13; one end of the plug wire 11 is soldered to the PCBA board 12, and the PCBA board 12 is connected to the tabs of the battery cell body 13; insulating protective paper 2 is wrapped around the battery cell body 13 and adhered to the surface of the battery cell body 13.

[0026] As an example, the battery cell unit 1 includes a plug wire 11, a PCBA board 12, and a battery cell body 13. During battery manufacturing, one end of the plug wire 11 is first soldered to the PCBA board 12, and then the PCBA board 12 is connected to the tabs of the battery cell body 13 using laser welding. Finally, insulating protective paper 2 is wrapped around the battery cell body 13 and adhered to its surface to form the battery. This design uses insulating protective paper 2 with labeling function to replace the existing insulating protective paper 2 and label paper, simplifying the process. Using insulating protective paper 2 as the battery casing allows battery information to be directly printed on the insulating protective paper. On paper 2, information about the battery is provided for users to identify, making it easier for users to categorize the batteries. Since the existing insulating protective paper 2 has a structure of: substrate layer + adhesive layer, and the label paper has a structure of: substrate layer + adhesive layer, the insulating protective paper 2 of this application has a structure of: ink layer 21 + substrate layer 22 + adhesive layer 23. When achieving the same function, the thickness of the insulating protective paper 2 of this application is thinner than the total thickness of the existing insulating protective paper 2 and label paper, so that the thickness of the battery of this application is thinner than the existing battery. Under the condition that the size and cell design parameters remain unchanged, the cell capacity of the battery can be increased, thereby meeting the design requirements of the maximum size of the battery as a whole.

[0027] In one embodiment, reference is made to Figure 1 , Figure 3 and Figure 4 The battery also includes insulating tape 4, which is wrapped around one end of the plug wire 11, the surface of the tabs of the PCBA board 12 and the cell body 13; and at least part of the insulating tape 4 is wrapped with insulating protective paper 2.

[0028] As an example, the battery also includes insulating tape 4. During battery manufacturing, one end of the plug wire 11 is first soldered to the PCBA board 12. Then, the PCBA board 12 is connected to the tabs of the cell body 13 using laser welding. Next, insulating tape 4 is wrapped around one end of the plug wire 11 and the surfaces of the tabs of the PCBA board 12 and the cell body 13. Specifically, insulating tape 4 is adhered to the surfaces of the plug wire 11, PCBA board 12, and cell body 13, providing insulation protection for these components. Finally, insulating protective paper 2 is used to wrap the cell body 13 and adhered to its surface. At least a portion of the insulating tape 4 is wrapped by the insulating protective paper 2 to form the battery. This configuration utilizes insulating protective paper 2 with labeling function instead of... The present invention replaces the existing battery insulating protective paper 2 and label paper, and the process is simpler than the existing ones. Using the insulating protective paper 2 as the battery shell, battery information can be directly printed on the insulating protective paper 2, which provides convenience for users to identify battery information and facilitates users to classify batteries. Since the existing insulating protective paper 2 has the structure of: substrate layer + adhesive layer, and the label paper has the structure of: substrate layer + adhesive layer, the insulating protective paper 2 of this application has the structure of: ink layer 21 + substrate layer 22 + adhesive layer 23. When achieving the same function, the thickness of the insulating protective paper 2 of this application is thinner than the total thickness of the existing insulating protective paper 2 and label paper, so that the thickness of the battery of this application is thinner than the existing battery. Under the condition that the size and cell design parameters remain unchanged, the cell capacity of the battery can be increased, thereby meeting the design requirements of the maximum size of the battery as a whole.

[0029] In one embodiment, reference is made to Figure 1 and Figure 4 The battery cell body 13 is a rectangular battery cell, and the two sides of the insulating protective paper 2 along the length direction of the insulating protective paper 2 abut or at least partially overlap on any one of the wide side, narrow side and arc transition surface of the rectangular battery cell.

[0030] As an example, the battery cell body 13 is a rectangular battery cell with a wide side, a narrow side, and an arc-shaped transition surface. When the insulating protective paper 2 wraps the rectangular battery cell, the two sides of the insulating protective paper 2 along its length abut or at least partially overlap and adhere to any one of the wide side, narrow side, and arc-shaped transition surface of the rectangular battery cell. Specifically, the insulating protective paper 2 abuts along its two sides along its length. In this case, the length of the insulating protective paper 2 is equal to the circumferential length of the rectangular battery cell, saving the amount of insulating protective paper 2 used while meeting the battery manufacturing requirements and reducing costs. Alternatively, the insulating protective paper 2 at least partially overlaps and adheres to its two sides along its length. In this case, the length of the insulating protective paper 2 is greater than the circumferential length of the rectangular battery cell. This ensures that the surface of the rectangular battery cell is not exposed during battery manufacturing, improving the battery's sealing performance.

[0031] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery, characterized in that, Includes battery cell units and insulating protective paper, wherein the insulating protective paper has a labeling function: The insulating protective paper comprises an ink layer, a substrate layer, and an adhesive layer stacked sequentially. The insulating protective paper wraps the battery cell unit, and the adhesive layer is bonded to the surface of the battery cell unit to form a battery.

2. The battery according to claim 1, characterized in that, The thickness of the insulating protective paper is 0.027-0.033 mm.

3. The battery according to claim 1, characterized in that, The insulating protective paper is bonded together by abutting or at least partially overlapping its two sides along its length.

4. The battery according to claim 1, characterized in that, The battery cell unit includes a plug wire, a PCBA board, and a battery cell body; One end of the plug wire is soldered to the PCBA board, and the PCBA board is connected to the tab of the battery cell body; The insulating protective paper wraps around the battery cell body and is adhered to the surface of the battery cell body.

5. The battery according to claim 4, characterized in that, The battery also includes insulating tape, which is wrapped around one end of the plug wire, the surface of the tabs of the PCBA board and the cell body; and at least a portion of the insulating tape is wrapped by the insulating protective paper.

6. The battery according to claim 4, characterized in that, The battery cell body is a rectangular battery cell, and the two sides of the insulating protective paper along the length direction of the insulating protective paper abut or at least partially overlap and adhere to any one of the wide side, narrow side and arc transition surface of the rectangular battery cell.

Images