A copper busbar structure and energy storage system

Abstract

This utility model discloses a copper busbar structure and energy storage system, relating to the field of energy storage technology. It includes: a soft copper busbar, one end of which is a first connecting end and the other end is a first welded portion; and a hard copper busbar, one end of which is a second connecting end and the other end is a second welded portion, the second welded portion and the first welded portion being welded together. A twisted portion is located near the second connecting end of the hard copper busbar. This effectively solves the technical problem of micro-cracks appearing in the soft copper busbar during installation and twisting for obstacle avoidance.

Description

Technical Field

[0001] This utility model relates to the field of new energy storage technology, and in particular to a copper busbar structure and energy storage system. Background Technology

[0002] With the acceleration of industrialization and the rapid development of new energy and energy storage technologies, power systems are placing higher demands on the safety, reliability, and efficiency of power distribution equipment. Traditional high-current power transmission relies heavily on cable connections, but cables have drawbacks such as high heat generation, high energy consumption, difficulty in heat dissipation, and complex installation, making it difficult to meet the needs of modern high-efficiency power distribution systems.

[0003] Copper busbars have gradually become the preferred conductive material in medium and low voltage power distribution systems due to their excellent electrical conductivity, good heat dissipation, and high mechanical strength. Especially in energy storage cabinets and industrial power distribution equipment, copper busbars, through modular design, significantly improve space utilization and ease of maintenance.

[0004] To further improve the electrical performance and mechanical strength of copper busbar connections, traditional bolted connections are gradually being replaced by polymer brazing technology. Existing copper busbar welded structures suffer from issues such as robustness and flatness. Ordinary copper busbar structures require multiple twisting and obstacle-avoidance installations, especially for soft copper busbars, which, despite their excellent ductility, are highly susceptible to microcracks due to stress concentration. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a three-phase copper busbar structure for energy storage. It improves the design by combining soft and hard copper busbars, with a rotational and torsional obstacle-avoidance installation at the hard copper busbar, thus solving the problem of micro-cracks appearing when the soft copper busbar is twisted in existing technologies. Specifically, it includes the following structure:

[0006] A three-phase copper busbar structure for energy storage includes: a soft copper busbar, one end of which is a first connecting end and the other end of which is a first welding part;

[0007] A hard copper busbar, one end of which is a second connecting end and the other end is a second welding part, the second welding part and the first welding part are welded together, and the hard copper busbar has a twisted part near the second connecting end.

[0008] The hard copper busbar includes a first hard copper busbar, a second hard copper busbar, a twisted portion, and a second connecting end. The twisted portion and the second hard copper busbar are bent and connected, and the first hard copper busbar and the second hard copper busbar are bent and connected, with the two bending directions being opposite.

[0009] The soft copper busbar includes a first soft copper busbar, a second soft copper busbar, and a first connecting end, wherein the first soft copper busbar and the second soft copper busbar are bent together, and the second soft copper busbar and the first connecting end are bent together.

[0010] As a preferred embodiment, the first welding part and the second welding part are mating stepped structures, and the stepped structures are provided with mutually mating protrusions and grooves.

[0011] As a preferred embodiment, the welding is performed using a brazing forming process, and the brazing filler metal is silver-copper brazing filler metal.

[0012] This utility model also proposes an energy storage system that uses the above-mentioned three-phase copper busbar structure for energy storage to achieve electrical connection.

[0013] The beneficial effects of this utility model are:

[0014] Compared to traditional irregular-shaped copper busbars, the copper busbar structure of this utility model has lower cost and higher utilization rate. The twisted copper busbar uses standard busbars, which are rotated and twisted by mechanical equipment to avoid obstacles, achieving the desired installation effect, resulting in significant material cost savings. The twisting design facilitates installation, while the flexible busbar in the rigid-flexible combination primarily absorbs installation errors and provides buffering, resulting in substantial savings in production costs and processes. Without the twisting process, irregular laser cutting would be required, adding two hard bends, which would increase costs.

[0015] The copper busbar structure of this invention requires only one busbar machine process. Compared with the traditional multi-station, multi-process method, it saves manpower, shortens turnaround time, and improves efficiency. Attached Figure Description

[0016] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the copper busbar;

[0018] Figure 2 yes Figure 1 A magnified view of the details of A;

[0019] Figure 3 This is a schematic diagram of a soft copper busbar structure;

[0020] Figure 4 This is a schematic diagram of a rigid copper busbar structure. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of this invention.

[0022] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in the prior art and will not be elaborated upon here. When a component is perpendicular or approximately perpendicular to another component, it means that the ideal state is perpendicularity, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] In this invention, the terms "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0025] A three-phase copper busbar structure for energy storage, such as Figure 1 and Figure 2 As shown, it includes:

[0026] A soft copper busbar, wherein one end of the soft copper busbar is a first connecting end 11 and the other end is a first welding part 12;

[0027] The hard copper busbar has a second connecting end 21 at one end and a second welding part 22 at the other end. The second welding part 22 is welded together with the first welding part 12. The hard copper busbar has a twisted part 23 near the second connecting end 21.

[0028] The hard copper busbar includes a first hard copper busbar 24, a second hard copper busbar 25, a twisted portion 23, and a second connecting end 21. The twisted portion 23 and the second hard copper busbar 25 are bent together, and the first hard copper busbar 24 and the second hard copper busbar 25 are bent together, with the two bending directions being opposite. The soft copper busbar includes a first soft copper busbar 13, a second soft copper busbar 14, and a first connecting end 11. The first soft copper busbar 13 and the second soft copper busbar 14 are bent together, and the second soft copper busbar 14 and the first connecting end 11 are bent together.

[0029] As a preferred option, such as Figure 2 and Figure 3 As shown, the first welding part 12 and the second welding part 22 are mating stepped structures, and the stepped structures are provided with mutually mating protrusions and grooves. For example, the first step of the soft copper busbar is provided with a protrusion 121, and the first step of the hard copper busbar is provided with a groove 221, and the two are embedded together, or the first step of the soft copper busbar is provided with a groove, and the first step of the hard copper busbar is provided with a protrusion, and the two are embedded together.

[0030] The stepped structure, combined with its design, significantly increases the welding contact area, improving the mechanical strength and electrical conductivity of the connection. It also serves a self-positioning function, enhancing welding alignment accuracy and process consistency. Furthermore, the use of protruding and recessed connections, combined with brazing, results in a more robust and stable connection that is less prone to deformation.

[0031] Preferably, the welding is performed using a brazing forming process, and the brazing filler metal is silver-copper brazing filler metal.

[0032] Furthermore, it should be noted that the shapes and names of the parts and components described in the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A copper busbar structure, characterized in that, include: A soft copper busbar, one end of which is a first connecting end (11) and the other end is a first welding part (12). The hard copper busbar has a second connecting end (21) at one end and a second welding part (22) at the other end. The second welding part (22) and the first welding part (12) are welded together. The hard copper busbar has a twisted part (23) near the second connecting end (21).

2. The copper busbar structure as described in claim 1, characterized in that, The first welding part (12) and the second welding part (22) are mating stepped structures, and the stepped structures are provided with mutually mating protrusions and grooves.

3. The copper busbar structure as described in claim 1, characterized in that, The welding process employs brazing forming, and the brazing filler metal is silver-copper brazing filler metal.

4. A copper busbar structure as described in claim 1, characterized in that, The hard copper busbar includes a first hard copper busbar (24), a second hard copper busbar (25), a twisted portion (23), and a second connecting end (21). The twisted portion (23) and the second hard copper busbar (25) are bent and connected together, and the first hard copper busbar (24) and the second hard copper busbar (25) are bent and connected together, with the two bending directions being opposite.

5. A copper busbar structure as described in claim 1, characterized in that, The soft copper busbar includes a first soft copper busbar (13), a second soft copper busbar (14) and a first connecting end (11), wherein the first soft copper busbar (13) and the second soft copper busbar (14) are bent and connected, and the second soft copper busbar (14) and the first connecting end (11) are bent and connected.

6. An energy storage system, characterized in that, Electrical connection is achieved using the energy storage three-phase copper busbar structure described in any one of claims 1 to 5.

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