Multi-layer metal array and its flexible metal array

Abstract

The utility model discloses a multilayer metal row and flexible metal row thereof, the flexible metal row includes a plurality of be used for connecting the connection row of positive pole or negative pole of electricity core and a plurality of be connected in the connection strip between adjacent connection row, and the interval arrangement is set between adjacent connection strip. The utility model discloses simple structure, and the adjacent connection row is connected through the connection strip, and the connection strip of interval arrangement forms the effect similar to spring, and the expansion of electricity core is allowed to extend and compress, and the flexible connection between corresponding adjacent connection row, is not easy to be pulled apart, still can guarantee the conductivity of flexible metal row.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to a multilayer metal busbar and its flexible metal busbar. Background Technology

[0002] As the health of the batteries / cells declines during use, the central part of the battery gradually expands. Since the batteries are concentrated in a busbar composed of aluminum busbars, and the expansion force is typically significant, even though gaps are generally provided between batteries for expansion, the distance between them still increases towards the end of the battery's lifespan. This can cause the aluminum busbars to stretch or even break, resulting in a loss of conductivity and affecting the connection between the aluminum busbars and the battery electrodes. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a multilayer metal busbar and its flexible metal busbar to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model discloses a flexible metal busbar, including a plurality of connecting busbars for connecting the positive or negative electrode of a battery cell and a plurality of connecting strips connecting adjacent connecting busbars, wherein the adjacent connecting strips are spaced apart.

[0006] Furthermore, in the aforementioned flexible metal strip, the connecting strip is integrally formed with the connecting strip, and a through groove is provided between adjacent connecting strips.

[0007] Furthermore, in the aforementioned flexible metal bar, the through groove has an arc-shaped, curved, zigzag, straight, or wavy structure along its length.

[0008] Furthermore, in the aforementioned flexible metal busbar, the dimensions and shapes of the through slots may be the same or different.

[0009] Furthermore, in the aforementioned flexible metal busbar, the connecting strip and the connecting busbar are separate structures, with both ends of the connecting strip electrically connected to the corresponding connecting busbar.

[0010] Furthermore, in the aforementioned flexible metal strip, the connecting strip has an arc-shaped, curved, zigzag, straight, or wavy structure along its length.

[0011] Furthermore, in the aforementioned flexible metal strips, the connecting strips may have the same or different dimensions and shapes.

[0012] This utility model discloses a multilayer metal bar, which is formed by stacking the above-mentioned flexible metal bars.

[0013] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, and adjacent connecting bars are connected by connecting strips. The spaced connecting strips form a spring-like effect, allowing for elongation and compression. When the battery cell expands, the corresponding adjacent connecting bars are flexibly connected, making them less likely to break and still ensuring the conductivity of the flexible metal bar; the multi-layer metal bar formed by stacking flexible metal bars enhances the elasticity at the connecting strips. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a schematic diagram of the first structure of the flexible metal bar in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a schematic diagram of the second structure of the flexible metal bar in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a schematic diagram of the third structure of the flexible metal bar in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is a schematic diagram of the fourth structure of the flexible metal bar in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a fifth structural schematic of the flexible metal bar in a specific embodiment of this utility model.

[0020] Figure 6 The diagram shown is a schematic representation of the structure of the multi-layer metal bar in a specific embodiment of this utility model.

[0021] Throughout this disclosure, the same reference numerals have been used to identify the same elements. Detailed Implementation

[0022] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] For example, see Figures 1 to 5 As shown, a flexible metal busbar includes several connecting busbars 1 for connecting the positive or negative terminals of a battery cell and several connecting strips 2 connected between adjacent connecting busbars 1, with adjacent connecting strips 2 spaced apart.

[0026] In this technical solution, the connecting strip is made of conventional conductive materials, including but not limited to aluminum, copper, steel, nickel, composite materials, and various alloys. The connecting strip is provided with connection positions for connecting the positive or negative terminals of the battery cell. The connecting strips located between adjacent batteries are connected by several spaced connecting strips. The spaced connecting strips form a spring-like effect, allowing for elongation and compression. When the battery cell expands, the corresponding adjacent connecting strips are flexibly connected, making them less likely to break and still ensuring the conductivity of the flexible metal strip. In addition, the connecting strips can also be used as fuses, melting when the current exceeds a set value to protect the battery. When used as fuses, the gaps between the connecting strips are encapsulated with injection-molded insulating flame-retardant sealant or potting compound to wrap the fuse and prevent the generation of electric sparks.

[0027] For example, see Figures 1 to 4 As shown, the connecting strip 2 and the connecting strip 1 are integrally formed, and through grooves are provided between adjacent connecting strips 2.

[0028] In this technical solution, adjacent connecting bars are made of the same aluminum plate / aluminum foil, and several through slots are cut out between adjacent battery connection positions. The remaining part between adjacent through slots forms a connecting strip. The spaced connecting strips form a spring-like effect, allowing for elongation and compression. When the battery cell expands, the corresponding adjacent connecting bars are flexibly connected, which is not easily broken and can still ensure the conductivity of the flexible metal bar.

[0029] For example, see Figures 1 to 4 As shown, the through groove can be arc-shaped, curved, zigzag, straight, or wavy along its length. The dimensions and shapes of the through grooves can be the same or different.

[0030] In this technical solution, the through-slots can be regular or irregular in shape, such as arc, curve, zigzag, straight, and wavy. The through-slots can be a single structure or a combination of two or more structures. The through-slots can be the same or different in size, as long as they can achieve flexible connection between the connecting strips. The flexible metal strips use relatively thin materials and can utilize rolled aluminum sheets, combined with existing circular knives or laser cutting machines for assembly line production, resulting in high production efficiency. At the same time, due to its ability to be produced on a fully automated assembly line, subsequent processes such as attaching the insulation layer can also be fully automated, saving labor costs and further improving production efficiency.

[0031] For example, see Figure 5 As shown, the connecting strip 2 and the connecting row 1 are separate structures. The two ends of the connecting strip 2 are electrically connected to the corresponding connecting row 1. The connecting strip 2 has an arc shape, curve shape, zigzag shape, straight line shape, or wavy shape along its length. The size and shape of the connecting strips may be the same or different.

[0032] In this technical solution, the two ends of the connecting strip are connected to the corresponding connecting row by conventional methods such as welding, and are electrically connected to the connecting row. Adjacent connecting strips are spaced apart, and the shape and size of the connecting strips are not required, as long as they can achieve flexible connection between adjacent connecting rows.

[0033] For example, see Figure 6 As shown, a multi-layer metal strip is formed by stacking multiple flexible metal strips to enhance the overall strength and elasticity of the connecting strips. The connecting strips in adjacent flexible metal strips are arranged to overlap or intersect.

[0034] In summary, this utility model has a simple structure. Adjacent connecting bars are connected by connecting strips, and the spaced connecting strips form a spring-like effect, allowing for elongation and compression. When the battery cell expands, the corresponding adjacent connecting bars remain flexibly connected, making them less prone to breakage and ensuring the conductivity of the flexible metal busbar. The multi-layered metal busbar formed by stacking flexible metal busbars enhances the elasticity at the connecting strips. The overall material used is relatively thin, and it can utilize rolled aluminum sheets, combined with existing circular knives or laser cutting machines for assembly line production, resulting in high production efficiency. Furthermore, due to its ability to be produced on a fully automated assembly line, subsequent processes such as attaching the insulation layer can be fully automated, saving labor costs and further improving production efficiency.

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is only a specific embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A flexible metal busbar, characterized in that, It includes several connecting bars for connecting the positive or negative terminals of the battery cell and several connecting strips connecting adjacent connecting bars, with the adjacent connecting strips spaced apart; the several spaced connecting strips are arranged in parallel between adjacent connecting bars, forming a flexible connection structure similar to a spring that allows the adjacent connecting bars to extend and compress; the gaps between adjacent connecting bars are encapsulated with injection-molded insulating flame-retardant sealant or potting compound.

2. The flexible metal busbar according to claim 1, characterized in that: The connecting strip is integrally formed with the connecting bar, and a through groove is provided between adjacent connecting strips.

3. The flexible metal busbar according to claim 2, characterized in that: The through groove has an arc-shaped, curved, broken, straight, or wavy structure along its length.

4. The flexible metal busbar according to claim 2, characterized in that: The through slots may be the same or different in size and shape.

5. The flexible metal busbar according to claim 1, characterized in that: The connecting strip and the connecting row are separate structures, and the two ends of the connecting strip are electrically connected to the corresponding connecting row.

6. The flexible metal busbar according to claim 5, characterized in that: The connecting strip has an arc-shaped, curved, zigzag, straight, or wavy structure along its length.

7. The flexible metal busbar according to claim 5, characterized in that: The connecting strips may be the same or different in size and shape.

8. A multi-layer metal busbar, characterized in that, It is composed of flexible metal bars stacked according to any one of claims 1 to 7, wherein the connecting strips in adjacent flexible metal bars overlap or are staggered to enhance the elasticity at the connecting strips.

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