Copper bar, integrated panel system and battery pack

Abstract

The utility model provides a copper bar, an integrated panel system and a battery pack. The copper bar comprises a first connecting part, a second connecting part and a bending part, the extending direction of the first end of the bending part and the extending direction of the second end of the bending part are mutually inclined on a first plane, the second end of the bending part is turned over relative to the first end of the bending part in a third direction, the first plane is determined by the first direction and the second direction which are perpendicular to each other and intersect, and the second plane is determined by the second direction. The third direction is perpendicular to the first plane. The copper bar can be bent in different directions and folded at different angles according to actual conditions, so that the copper bar has excellent strength and rigidity in a limited space, good flexibility is kept, the problems of a hard copper bar and a soft copper bar in the prior art are solved, and the service life of the copper bar is prolonged. An electrical connection having excellent strength and stiffness within a limited space is provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, especially a copper bar, integrated panel system and battery pack. BACKGROUND

[0002] With the development of new energy industry, energy storage products as main products gradually go to the market. Similar to power products, high energy density has been the goal of the energy storage product industry. Whether it is an electric core, a battery module, a battery pack, or a home energy storage, an outdoor cabinet, a container and other system-level products, the industry is constantly optimizing the structure and process to make the product arrangement more compact to improve the energy density of the product under the condition of ensuring the same electricity. The CTC product of energy storage product is different from power product, especially outdoor cabinet and container, the smallest loading unit is still mainly battery pack at present. This means that the module arrangement inside the battery pack is more dense, and the space of high and low voltage lines is more narrow. In this compact space layout, the connection mode of the high voltage loop becomes a key problem.

[0003] In the prior art, high voltage loop mainly adopts two connection modes of hard copper bar and soft copper bar. However, both modes have certain limitations. The hard copper bar has poor toughness, and is prone to crack under vibration environment, affecting the reliability and safety of the system. Although the soft copper bar has certain flexibility, its structural strength is low, and is prone to deformation, which is difficult to meet the requirements of long-term stable operation.

[0004] Under the design trend of increasingly compact energy storage system, how to design a copper bar with excellent strength and rigidity in limited space to meet the electrical connection requirements has become a technical problem to be solved. This not only relates to the overall performance and reliability of the energy storage system, but also directly affects the service life and safety of the product.

[0005] In view of the above problems, the prior art needs to be improved. UTILITY MODEL CONTENTS

[0006] Therefore, it is necessary to provide a copper bar, an integrated panel system and a battery pack aiming at the above technical problems.

[0007] A copper bar comprises a first connecting part, a second connecting part and a bending part.

[0008] The first end of the bending part is connected with the first connecting part, and the second end of the bending part is connected with the second connecting part.

[0009] The extension direction of the first end of the bent portion and the extension direction of the second end of the bent portion are inclined to each other on a first plane, and the second end of the bent portion is folded relative to the first end of the bent portion in a third direction. The first plane is determined by a first direction and a second direction that are perpendicular and intersecting each other, and the third direction is perpendicular to the first plane.

[0010] In one embodiment, the extension direction of the first end of the bent portion is perpendicular to the extension direction of the second end of the bent portion on a first plane.

[0011] In one embodiment, the bending portion includes a first bending portion and a second bending portion;

[0012] The first end of the first bending portion is connected to the first connecting portion, the second end of the first bending portion is connected to the first end of the second bending portion, and the second end of the second bending portion is connected to the second connecting portion;

[0013] The extending direction of the first end of the first bend portion and the extending direction of the second end of the first bend portion are inclined to each other on a first plane, and the second end of the first bend portion is folded relative to the first end of the first bend portion in the direction of the third plane.

[0014] The extension direction of the first end of the second bend portion and the extension direction of the second end of the second bend portion are inclined to each other on a first plane, and the second end of the second bend portion is folded relative to the first end of the second bend portion in the third direction.

[0015] In one embodiment, the second end of the first bend portion is connected to the first end of the second bend portion via the flat portion.

[0016] In one embodiment, it further includes a first right-angle bend and a second right-angle bend;

[0017] The first end of the first bent portion is connected to the first connecting portion through the first right-angle bend, and the second end of the second bent portion is connected to the second connecting portion through the second right-angle bend.

[0018] In one embodiment, the extension direction of the first end of the first bend portion is opposite to the extension direction of the second end of the second bend portion.

[0019] In one embodiment, the second end of the first bend portion and the first end of the second bend portion are on the same plane. In one embodiment, the extending direction of the first end of the first bend portion and the extending direction of the second end of the first bend portion are perpendicular to each other on a first plane; and / or the extending direction of the first end of the second bend portion and the extending direction of the second end of the second bend portion are perpendicular to each other on a first plane.

[0020] An integrated panel system includes an integrated panel and a copper busbar as described in any of the above embodiments.

[0021] A battery pack comprising the integrated panel system described in the above embodiments.

[0022] The aforementioned copper busbar, integrated panel system, and battery pack include a first connecting portion, a second connecting portion, and a bending portion. The first and second ends of the bending portion are inclined relative to each other on a first plane, forming a certain angle within the first plane. Furthermore, the second end of the bending portion is folded relative to the first end of the bending portion in a third-degree upward direction. This allows the copper busbar to bend in different directions and at different angles according to actual conditions, achieving excellent strength and rigidity within a limited space while maintaining good flexibility. This solves the problems inherent in existing hard and soft copper busbars, providing the advantage of achieving excellent strength and rigidity in electrical connections within a limited space, and improving the overall performance, reliability, and safety of the energy storage system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the copper busbar in one embodiment;

[0024] Figure 2 This is a schematic diagram of the copper busbar structure in another embodiment;

[0025] Figure 3 This is a schematic diagram of the integrated panel system and battery pack in one embodiment.

[0026] In the attached diagram, 20 is a copper busbar; 110 is a first connecting part; 120 is a second connecting part; 130 is a bent part; 131 is a first bent part; 132 is a second bent part; 210 is a first right-angle bend; 310 is a second right-angle bend; 410 is a flat part; 50 is an integrated panel system; 501 is an integrated panel; and 60 is a battery pack. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of 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.

[0028] Example 1

[0029] In this embodiment, as Figures 1 to 2 As shown, a copper busbar 20 is provided, including a first connecting portion 110, a second connecting portion 120, and a bending portion 130;

[0030] The first end of the bent portion 130 is connected to the first connecting portion 110, and the second end of the bent portion 130 is connected to the second connecting portion 120;

[0031] The extension direction of the first end of the bent portion 130 and the extension direction of the second end of the bent portion 130 are inclined to each other on a first plane, and the second end of the bent portion 130 is folded relative to the first end of the bent portion 130 in a third direction. The first plane is determined by a first direction and a second direction that are perpendicular and intersecting each other, and the third direction is perpendicular to the first plane.

[0032] In this embodiment, the copper busbar 20 includes a first connecting portion 110, a second connecting portion 120, and a bent portion 130. The extension direction of the first end of the bent portion 130 and the extension direction of the second end of the bent portion 130 are inclined to each other on a first plane. For example, the first direction and the second direction are the X-axis direction and the Y-axis direction, respectively, and the first plane is the plane containing the X-axis and the Y-axis. Thus, the extension directions of the first end and the second end of the bent portion 130 form an angle on the first plane. The angle can be acute, right, or obtuse. This allows the copper busbar 20 to distribute stress as a whole, reducing local stress concentration and improving mechanical strength, by utilizing the different angles formed by the first and second ends of the bent portion 130. Figure 1 and Figure 2 As shown, the second end of the bent portion 130 is folded relative to the first end of the bent portion 130 in a third direction, which is perpendicular to the direction of the first end of the bent portion 130. Figure 1 The direction of the plane containing the X-axis and Y-axis, for example, the third direction is the Z-axis direction which is perpendicular to the X-axis direction and the Y-axis direction.

[0033] In the above embodiment, the extension directions of the first and second ends of the bent portion 130 are inclined to each other on the first plane, forming a certain angle within the first plane. Furthermore, the second end of the bent portion 130 is folded over the first end of the bent portion 130 in a third direction, allowing the copper busbar 20 to bend in different directions and at different angles according to actual conditions. This achieves excellent strength and rigidity within a limited space while maintaining good flexibility, thus solving the problems inherent in both hard and soft copper busbars 20 in the prior art. It has the advantages of achieving excellent strength and rigidity in electrical connections within a limited space, improving the overall performance, reliability, and safety of the energy storage system.

[0034] In one embodiment, such as Figure 1 and Figure 2 As shown, the extension direction of the first end of the bent portion 130 and the extension direction of the second end of the bent portion 130 are perpendicular to each other on a first plane.

[0035] In this embodiment, the extending direction of the first end of the bent portion 130 and the extending direction of the second end of the bent portion 130 are perpendicular to each other on a first plane. The first plane is defined by a first direction and a second direction that are perpendicular and intersecting; that is, the extending direction of the first end of the bent portion 130 extends along the first direction, and the extending direction of the second end of the bent portion 130 extends along the second direction. For example, as... Figure 1 As shown, the first end of the bent portion 130 extends towards the negative infinity direction of the X-axis, and the second end of the bent portion 130 extends towards the negative infinity direction of the Y-axis. For example, as... Figure 2 As shown, the first end of the bent portion 130 extends in the positive infinity direction of the Y-axis, and the second end of the bent portion 130 extends in the negative infinity direction of the X-axis.

[0036] In one embodiment, such as Figure 1 and Figure 2 As shown, the bending portion 130 includes a first bending portion 131 and a second bending portion 132; the first end of the first bending portion 131 is connected to the first connecting portion 110, the second end of the first bending portion 131 is connected to the first end of the second bending portion 132, the second end of the second bending portion 132 is connected to the second connecting portion 120, the second end of the first bending portion 131 and the first end of the second bending portion 132 are on the same plane; the extension direction of the first end of the first bending portion 131 and the extension direction of the second end of the first bending portion 131 are inclined to each other on a first plane, and the second end of the first bending portion 131 is folded relative to the first end of the first bending portion 131 in the third direction, the extension direction of the first end of the second bending portion 132 and the extension direction of the second end of the second bending portion 132 are inclined to each other on a first plane, and the second end of the second bending portion 132 is folded relative to the first end of the second bending portion 132 in the third direction.

[0037] In this embodiment, the bending portion 130 includes a first bending portion 131 and a second bending portion 132. Furthermore, the extending direction of the first end of the first bending portion 131 and the extending direction of the second end of the first bending portion 131 are inclined relative to each other on a first plane. For example, as shown... Figure 1As shown, the first end of the first bend 131 extends towards the positive infinity of the Y-axis, and the second end of the first bend 131 extends towards the positive infinity of the X-axis. Thus, the extension directions of the first and second ends of the first bend 131 form an angle on the first plane. This angle can be acute, right, or obtuse. This allows the copper busbar 20 to distribute stress and reduce local stress concentration by utilizing the different angles formed by the first and second ends of the bend 130, thereby improving mechanical strength. Simultaneously, the second end of the first bend 131 is folded relative to the first end of the first bend 131 in a third direction; that is, the second end of the first bend 131 is folded along a third direction. Furthermore, the extension directions of the first and second ends of the second bend 132 are also inclined relative to each other on the first plane, further aiding in stress dispersion. For example, as... Figure 1 As shown, the first end of the second bend 132 extends towards the negative infinity direction of the X-axis, and the second end extends towards the negative infinity direction of the Y-axis. Simultaneously, the second end of the second bend 132 is folded relative to the first end in a third direction; that is, the second end of the second bend 132 is folded along a third direction. Through the combination of the first bend 131 and the second bend 132, the copper busbar 20 can distribute external loads in multiple directions, preventing stress concentration at a single point. This helps improve the stability and durability of the overall structure.

[0038] For example, such as Figure 2 As shown, the first end of the first bend 131 extends towards the positive infinity of the Y-axis, and the second end extends towards the negative infinity of the X-axis. Thus, the extension directions of the first and second ends of the first bend 131 form an angle on the first plane. This angle can be acute, right, or obtuse. This allows the copper busbar 20 to distribute stress and reduce local stress concentration by utilizing the different angles formed by the first and second ends of the bend 130, thereby improving mechanical strength. Simultaneously, the second end of the first bend 131 folds relative to the first end of the first bend 131 in a third direction; that is, the second end of the first bend 131 folds along a third direction. Furthermore, the extension directions of the first and second ends of the second bend 132 are also inclined relative to each other on the first plane, further aiding in stress dispersion. For example, as... Figure 2As shown, the first end of the second bend 132 extends towards positive infinity along the X-axis, and the second end extends towards positive infinity along the Y-axis. Simultaneously, the second end of the second bend 132 is folded relative to the first end in a third direction; that is, the second end of the second bend 132 is folded along a third direction. Through the combination of the first bend 131 and the second bend 132, the copper busbar 20 can distribute external loads in multiple directions, preventing stress concentration at a single point. This helps improve the stability and durability of the overall structure.

[0039] Specifically, the first bend 131 and the second bend 132 can be implemented in various ways. For example, the length and angle of the first bend 131 and the second bend 132 can be adjusted according to actual needs to adapt to different installation spaces and connection requirements. The included angle between the first end of the first bend 131 and the second end of the first bend 130 in the direction of extension can be a right angle, an acute angle, or an obtuse angle, depending on the required mechanical strength and spatial layout. The second bend 132 can also be adjusted similarly to achieve optimal mechanical performance and space utilization. Thus, this structure achieves the technical effect of providing a copper busbar 20 connection with strength and rigidity in a confined space. Compared with the prior art, the structure of two bends, the first bend 131 and the second bend 132, not only improves mechanical strength and rigidity but also effectively avoids the problems of easy cracking of the hard copper busbar 20 and easy deformation of the soft copper busbar 20, ensuring the reliability and stability of the electrical connection. This structure facilitates efficient copper busbar 20 connections within a limited space, offering significant technical advantages.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, it also includes a flat portion 410, through which the second end of the first bent portion 131 is connected to the first end of the second bent portion 132.

[0041] In this embodiment, the second end of the first bent portion 131 is connected to the first end of the second bent portion 132 via the flat portion 410, so that the second end of the first bent portion 131 and the first end of the second bent portion 132 are on the same plane. The flat portion 410 not only connects the two bent portions, but also provides additional planar support, reducing stress concentration. This makes the entire copper busbar 20 structure more stable, especially in that it can better disperse stress when subjected to external forces.

[0042] In one embodiment, such as Figure 1 and Figure 2As shown, it also includes a first right-angle bend 210 and a second right-angle bend 310; the first end of the first bend 131 is connected to the first connecting part 110 through the first right-angle bend 210, and the second end of the second bend 132 is connected to the second connecting part 120 through the second right-angle bend 310.

[0043] In this embodiment, to further improve stress dispersion and space utilization, the first end of the first bent portion 131 is connected to the first connecting portion 110 via a first right-angle bend 210, and the second end of the second bent portion 132 is connected to the second connecting portion 120 via a second right-angle bend 310. Connecting the first connecting portion 110 to the first end of the first bent portion 131 forms a 90-degree bend, allowing the first connecting portion 110 to be perpendicular to the initial extension direction of the first bent portion 131. Connecting the second end of the second bent portion 132 to the second connecting portion 120 forms a 90-degree bend, allowing the second connecting portion 120 to be perpendicular to the final extension direction of the second bent portion 132. The first right-angle bend 210 and the second right-angle bend 310 can be implemented using different manufacturing processes. For example, the copper busbar 20 can be formed into a right-angle bend structure using stamping or bending processes. Furthermore, the size and angle of the right-angle bend can be adjusted according to specific application requirements to adapt to different installation spaces and mechanical requirements. In addition, reinforcing ribs or other structures can be added at the right-angle bends to further improve the strength and rigidity of the copper busbar 20. In some embodiments, the inner and outer corners of the first right-angle bend 210 and the second right-angle bend 310 can be rounded to reduce stress concentration and extend the service life of the copper busbar 20.

[0044] In one embodiment, such as Figure 1 As shown, the extension direction of the first end of the first bending portion 131 is opposite to the extension direction of the second end of the second bending portion 132.

[0045] In this embodiment, the extension direction of the first end of the first bent portion 131 is opposite to the extension direction of the second end of the second bent portion 132. This can be achieved in various ways. For example, the first end of the first bent portion 131 extends towards positive infinity of the Y-axis, and the second end of the second bent portion 132 extends towards negative infinity of the Y-axis. Alternatively, the first bent portion 131 and the second bent portion 132 can achieve opposite extension directions through different bending angles and directions. Specifically, the first bent portion 131 can extend upwards, while the second bent portion 132 can extend downwards. Thus, by adjusting the bending angle and direction, different extension directions can be achieved, thereby improving the strength and rigidity of the copper busbar 20.

[0046] In one embodiment, the extension direction of the first end of the first bend portion 131 is perpendicular to the extension direction of the second end of the first bend portion on a first plane.

[0047] In one embodiment, the extension direction of the first end of the second bend portion 132 is perpendicular to the extension direction of the second end of the second bend portion on a first plane.

[0048] In the above embodiment, the extension directions of the two ends of the first bending portion 131 are perpendicular to each other, and the extension directions of the two ends of the second bending portion 132 are perpendicular to each other, which can further improve the strength and rigidity of the copper busbar 20.

[0049] In one embodiment, such as Figure 3 As shown, an integrated panel system 50 is provided, including an integrated panel 501, and also the copper busbar 20 described in any of the above embodiments.

[0050] In one embodiment, such as Figure 3 As shown, a battery pack 60 is provided, including the integrated panel system 50 described in the above embodiments. The battery pack 60 can be an energy storage battery pack or a power battery pack.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A copper busbar, characterized in that, It includes a first connecting part, a second connecting part, and a bending part; The first end of the bent portion is connected to the first connecting portion, and the second end of the bent portion is connected to the second connecting portion; The extension direction of the first end of the bent portion and the extension direction of the second end of the bent portion are inclined to each other on a first plane, and the second end of the bent portion is folded relative to the first end of the bent portion in a third direction. The first plane is determined by a first direction and a second direction that are perpendicular and intersecting each other, and the third direction is perpendicular to the first plane.

2. The copper busbar according to claim 1, characterized in that, The extension direction of the first end of the bent portion and the extension direction of the second end of the bent portion are perpendicular to each other on a first plane.

3. The copper busbar according to claim 1 or 2, characterized in that, The bending section includes a first bending section and a second bending section; The first end of the first bending portion is connected to the first connecting portion, the second end of the first bending portion is connected to the first end of the second bending portion, and the second end of the second bending portion is connected to the second connecting portion; The extending direction of the first end of the first bend portion and the extending direction of the second end of the first bend portion are inclined to each other on a first plane, and the second end of the first bend portion is folded relative to the first end of the first bend portion in the direction of the third plane. The extension direction of the first end of the second bend portion and the extension direction of the second end of the second bend portion are inclined to each other on a first plane, and the second end of the second bend portion is folded relative to the first end of the second bend portion in the third direction.

4. The copper busbar according to claim 3, characterized in that, It also includes a flat section, through which the second end of the first bending section is connected to the first end of the second bending section.

5. The copper busbar according to claim 3, characterized in that, It also includes the first right-angle bend and the second right-angle bend; The first end of the first bent portion is connected to the first connecting portion through the first right-angle bend, and the second end of the second bent portion is connected to the second connecting portion through the second right-angle bend.

6. The copper busbar according to claim 3, characterized in that, The extension direction of the first end of the first bend is opposite to the extension direction of the second end of the second bend.

7. The copper busbar according to claim 3, characterized in that, The second end of the first bending section and the first end of the second bending section are on the same plane.

8. The copper busbar according to claim 3, characterized in that, The extension direction of the first end of the first bend portion is perpendicular to the extension direction of the second end of the first bend portion on a first plane. and / or The extension direction of the first end of the second bend portion is perpendicular to the extension direction of the second end of the second bend portion on a first plane.

9. An integrated panel system, comprising an integrated panel, characterized in that, It also includes the copper busbar as described in any one of claims 1-8.

10. A battery pack, characterized in that, Including the integrated panel system as described in claim 9.

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