Flexible conductive bar

Abstract

The utility model discloses a flexible conductive bar, which is provided with a bending part for relieving the expansion force of the battery, and includes a plurality of conductive bars arranged in layers, wherein the conductive bar is provided with a bend forming the bending part, and the bends of adjacent conductive bars are arranged at intervals. The utility model has a simple structure and is formed by stacking multiple layers of conductive bars. The conductive bar can be produced on an assembly line using a coil and a fully automatic circular knife / laser cutting machine, and subsequent processes such as attaching an insulating layer can be fully automatically performed, saving labor costs and increasing production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a flexible conductive bar. Background Art

[0002] In order to alleviate the impact of battery expansion force on busbar connection, busbars on the market are thicker to ensure strength and prevent battery expansion force from breaking the conductive busbar. This type of conductive busbar is generally formed by stamping in one step, and the stamped conductive busbar is manually assembled into the finished CCS (abbreviation of Cells Contact System, Chinese name is integrated busbar or wiring harness board integration, battery cover assembly, etc.) for production; the material cost of stamped conductive busbar is high, the corresponding production cost is also high, and it is difficult to carry out fully automated assembly line production, and the production efficiency is low. Therefore, improvements need to be proposed. Utility Model Content

[0003] The utility model aims to provide a flexible conductive bar to overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model discloses a flexible conductive row, which is provided with a bending part for alleviating the expansion force of a battery and comprises a plurality of conductive rows arranged in layers, wherein the conductive row is provided with a bend forming the bending part.

[0006] Furthermore, in the above-mentioned flexible conductive bar, a conductive connection layer is provided between adjacent conductive bars.

[0007] Furthermore, in the above-mentioned flexible conductive bar, the bends of adjacent conductive bars are arranged at intervals.

[0008] Furthermore, in the above-mentioned flexible conductive bar, the conductive connection layer includes connecting pieces respectively arranged at two ends of adjacent conductive bars, and the two connecting pieces are respectively arranged at two sides of the bending portion, and the two connecting pieces are arranged at intervals.

[0009] Furthermore, the above-mentioned flexible conductive bus further includes a sensing layer for sensing the temperature and voltage of the flexible conductive bus and electrically connected to the sampling sensing circuit.

[0010] Furthermore, the above-mentioned flexible conductive bar also includes a connection layer. A nickel or copper layer is provided on the outer side of the outermost conductive bar. When the conductive bar is made of metal aluminum, it can be electrically connected to an external circuit through the connection layer.

[0011] Furthermore, the above-mentioned flexible conductive bar also includes a tolerance layer, and a single-layer or multi-layer steel plate is arranged between any adjacent conductive bars or on the outer side of the outer conductive bar to improve the overall fatigue tolerance.

[0012] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure and is formed by stacking multiple layers of conductive bars. The conductive bars can be produced on an assembly line using coils and fully automatic circular knife / laser cutting machines, and subsequent processes such as attaching an insulating layer can be fully automatically performed, saving labor costs and increasing production efficiency; the stacked conductive bars are welded as a whole through a conductive connecting layer to ensure overall strength, and the connecting sheets are spaced apart at the bending portion to form gaps between adjacent bends, which facilitates bending and is beneficial to the heat dissipation of the conductive bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 Shown is a schematic structural diagram of a flexible conductive bar in a specific embodiment of the utility model.

[0015] Figure 2 Shown is an exploded schematic diagram of a flexible conductive bar in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model in detail. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, 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, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 indirectly connected 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 according to specific circumstances.

[0019] For example, see Figure 1 and Figure 2 As shown, a flexible conductive bar is provided with a bending portion for alleviating the expansion force of a battery, and includes a plurality of conductive bars 1 arranged in a stacked manner, wherein a bend 101 forming the bending portion is provided inside the conductive bar 1.

[0020] In this technical solution, the conductive bus is used to connect the positive or negative electrode of the battery, and is provided with positioning holes corresponding to the battery. In actual applications, in order to reduce the product weight and production costs, the conductive bus is made of conductive materials, including but not limited to aluminum, copper, steel, nickel, as well as composite materials and various alloys. The conductive bus can be produced on an assembly line using coils and fully automatic circular knife / laser cutting machines, and subsequent processes such as attaching an insulating layer can be fully automatically performed, saving labor costs and increasing production efficiency.

[0021] For example, see Figure 1 and Figure 2 As shown, a conductive connection layer 2 is arranged between adjacent conductive bars 1 .

[0022] In this technical solution, the conductive connecting layer is a conductive welding material. After the conductive bus and the conductive connecting layer are stacked, the multiple layers of the conductive bus and the conductive connecting layer are rigidly connected as a whole by welding or other means to meet the strength requirements. The conductive connecting layer and the conductive bus are both metals with high conductivity. When the parameters such as size are the same, the electrical performance is similar to that of a traditional busbar.

[0023] For example, see Figure 1 and Figure 2 As shown, the bends of adjacent conductive bars 1 are arranged at intervals.

[0024] In this technical solution, gaps are formed between adjacent bends, which is beneficial to the heat dissipation of the conductive bar.

[0025] For example, see Figure 1 and Figure 2 As shown, the conductive connection layer includes connecting sheets 2 respectively arranged at both ends between adjacent conductive rows, and the two connecting sheets 2 are respectively arranged at both sides of the bending portion, and the two connecting sheets 2 are spaced apart.

[0026] In this technical solution, two connecting sheets are spaced apart at the bends, so that gaps can be formed at corresponding positions between adjacent conductive bars, which is convenient for bending and can be completed by a mold, etc., without the need for a punching machine or a bending machine. After bending, gaps are formed between adjacent bends, which is beneficial to the heat dissipation of the conductive bars.

[0027] Exemplarily, the flexible conductive bus further includes a sensing layer for sensing the temperature and voltage of the flexible conductive bus and electrically connected to a sampling sensing circuit.

[0028] Exemplarily, the flexible conductive busbar further includes a connection layer, and a nickel or copper layer is disposed on the outer side of the outermost conductive busbar. When the conductive busbar is made of metal aluminum or the like, the connection layer can be electrically connected to an external circuit.

[0029] Exemplarily, the flexible conductive bar further includes a resistant layer, and a single-layer or multi-layer steel plate is arranged between any adjacent conductive bars or on the outer side of the outer conductive bar through a connecting sheet to improve the overall fatigue tolerance.

[0030] In summary, the utility model has a simple structure and is formed by stacking multiple layers of conductive bars. The conductive bars can be produced on an assembly line using coils and fully automatic circular knife / laser cutting machines, and subsequent processes such as attaching an insulating layer can be fully automatically performed, saving labor costs and increasing production efficiency. The stacked conductive bars are welded as a whole through a conductive connecting layer to ensure the overall strength, and the connecting sheets are spaced apart at the bending portion to form gaps between adjacent bends, which facilitates bending and is beneficial to the heat dissipation of the conductive bars.

[0031] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0032] The above is only a specific implementation of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A flexible conductive bar, provided with a bending portion for alleviating battery expansion force, characterized in that: It comprises a plurality of stacked conductive rows, wherein the conductive rows are provided with bends forming the bend portions.

2. The flexible conductive bar according to claim 1, characterized in that: A conductive connection layer is arranged between adjacent conductive rows.

3. The flexible conductive bar according to claim 1, characterized in that: The bends of adjacent conductive rows are arranged at intervals.

4. The flexible conductive bar according to claim 2, characterized in that: The conductive connection layer includes connecting pieces respectively arranged at two ends of adjacent conductive rows, and two connecting pieces are respectively arranged at two sides of the bending portion, and the two connecting pieces are spaced apart from each other.

5. The flexible conductive bar according to claim 1, characterized in that: A sensing layer is also included.

6. The flexible conductive bar according to claim 1, characterized in that: A connection layer is also included.

7. The flexible conductive bar according to claim 1, characterized in that: A resistant layer is also included.

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