Copper bar for liquid cooling PACK
By optimizing the copper busbar structure and combining heat shrink tubing and nylon braided mesh, the problems of limited space and wear in the copper busbar connection of liquid-cooled PACK were solved, improving insulation withstand voltage and heat dissipation performance in a confined space, and enhancing the safety and reliability of liquid-cooled PACK.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-27
AI Technical Summary
The limited space for copper busbar connections in liquid-cooled PACKs results in insufficient insulation withstand voltage, and the circuits are prone to wear during transportation, posing safety hazards.
Design an integrally molded copper busbar body, with an outer heat-shrink tubing and a nylon braided mesh. The connecting frame uses 0.1mm copper-nickel composite strip or pure nickel sheet to enhance heat dissipation. By optimizing the copper busbar connection structure design, space utilization is increased, contact resistance is reduced, and heat dissipation is enhanced.
To meet insulation withstand voltage requirements in confined spaces, prevent wear, improve safety and heat dissipation efficiency, and reduce voltage drop and losses.
Smart Images
Figure CN224053261U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the energy storage system technical field, more particularly to a copper bar for liquid cooling PACK. BACKGROUND
[0002] With the rapid development of new energy industry, the demand for liquid cooling containers is also growing rapidly. As the main component unit of liquid cooling containers and outdoor cabinets, the safety of liquid cooling PACK has attracted more attention.
[0003] How to provide a more reliable and safe technical solution for liquid cooling PACK at a small cost is crucial to ensure the safe operation of liquid cooling PACK. Among them, the connection between the external connector and the module in the liquid cooling PACK is usually connected by a copper bar, and the space for placing the copper bar between the connector and the module in the liquid cooling PACK is usually very small, which limits the width of the copper bar current-carrying position and can only be thickened, resulting in increased space and not conducive to welding and heat dissipation.
[0004] The liquid cooling PACK related standards (such as GB36276) require that the liquid cooling PACK must meet certain insulation withstand voltage requirements (test voltage not less than 4250vdc, test time 60S, leakage current <1mA), and the general copper bar design does not meet this insulation withstand voltage requirement.
[0005] In addition, during transportation, due to the ruggedness of the road and the factors of sea shipping waves, the devices inside the PACK will vibrate, which will cause damage to the surface of the copper bar, which will cause safety hazards. INVENTION CONTENTS
[0006] In order to make up for the shortcomings of the prior art, the utility model aims at providing a copper bar for liquid cooling PACK, which optimizes the design of the copper bar structure, so that the copper bar can meet the corresponding insulation withstand voltage requirement under the condition of narrow space, and can avoid the abrasion of the copper bar caused by vibration.
[0007] The problems solved by the utility model can be realized by the following specific technical solutions:
[0008] The copper bar for liquid cooling PACK comprises a copper bar body, a first connecting frame is arranged at one end of the copper bar body, a second connecting frame is arranged at the other end of the copper bar body, the copper bar body is in a straight strip shape, a heat shrinkable sleeve is arranged outside the copper bar body, and a nylon braided mesh is arranged in the middle of the heat shrinkable sleeve; the first connecting frame is connected with the external connector of the liquid cooling PACK, the second connecting frame is connected with the battery module of the liquid cooling PACK, the orientations of the first connecting frame and the second connecting frame are perpendicular, and the first connecting frame and the second connecting frame are arranged above and below the copper bar body respectively.
[0009] Further, the first connecting frame is an inverted L-shaped frame, forming a Z-shaped structure with the copper bar body, the vertical wall of the inverted L-shaped frame being connected perpendicularly to the copper bar body, and the horizontal wall being a lap joint surface for connecting with the connector.
[0010] Further, the second connecting frame comprises a bending part and an L-shaped part, the L-shaped part being arranged below the copper bar body, one end of the bending part being connected to the copper bar body, and the other end being connected to the top of the vertical section of the L-shaped part; the horizontal section of the L-shaped part being a lap joint surface for connecting with the battery module, and the horizontal section being perpendicular to the horizontal wall of the first connecting frame.
[0011] Further, the horizontal wall of the first connecting frame and the horizontal section of the L-shaped part of the second connecting frame are made of 0.1mm copper-nickel composite tape or pure nickel sheet.
[0012] Further, the copper bar body, the first connecting frame and the second connecting frame are integrally formed.
[0013] Compared with the prior art, the copper bar has the following advantages:
[0014] The copper bar is integrally formed with the copper bar body, the first connecting frame and the second connecting frame, the straight copper bar body is sleeved with a heat-shrinkable sleeve, and a nylon braided mesh is arranged outside the heat-shrinkable sleeve to avoid damage caused by transportation vibration, and the copper bar body is fixed on the support in the PACK by a tie to ensure the electrical clearance and prevent foreign matter from being lap jointed. The first connecting frame and the second connecting frame are perpendicular to each other and are arranged above and below the copper bar body respectively, and the lap joint surface for connecting the first connecting frame and the second connecting frame is made of 0.1mm copper-nickel composite tape (the mass ratio of copper to nickel being 8:2) or pure nickel sheet, so as to reduce the contact resistance, voltage drop and loss, and enhance the heat dissipation capacity. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 Fig. 1 is a structural schematic view of the copper bar of the present application;
[0016] Fig. 2 Fig. 2 is another structural schematic view of the copper bar of the present application;
[0017] Fig. 3 Fig. 3 is a use schematic view of the copper bar of the present application.
[0018] In the figure, 1 is a copper bar body, 2 is a first connecting frame, 3 is a second connecting frame, 31 is a bending part, 32 is an L-shaped part, 4 is a nylon braided mesh, and 5 is a tie plate. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.
[0020] As shown in the drawings, Figs. 1-3 A copper bar for liquid-cooled PACK, comprising a copper bar body 1, a first connecting frame 2 arranged at one end of the copper bar body 1 and a second connecting frame 3 arranged at the other end of the copper bar body 1, the copper bar body 1, the first connecting frame 2 and the second connecting frame 3 being integrally formed. The copper bar body 1 is in the shape of a straight strip, a heat-shrinkable sleeve is arranged outside the copper bar body 1, and a nylon braided mesh 4 is arranged at the middle part outside the heat-shrinkable sleeve; the first connecting frame 2 is connected with a connector outside the liquid-cooled PACK, the second connecting frame 3 is connected with a battery module of the liquid-cooled PACK, the first connecting frame 2 and the second connecting frame 3 are perpendicular to each other and are arranged above and below the copper bar body 1 respectively.
[0021] The heat-shrinkable sleeve is arranged outside the copper bar body 1 to provide insulation protection, mechanical protection and prevent foreign matter from being overlapped; meanwhile, the middle part outside the heat-shrinkable sleeve is wrapped with a layer of nylon braided mesh 4, which is to reduce wear and tear, ensure insulation protection and facilitate safe fixation; the area corresponding to the nylon braided mesh 4 is fixed on a cable tie plate 5 of the liquid-cooled PACK by a cable tie, which is to ensure electrical clearance and prevent foreign matter from being overlapped.
[0022] Specifically, the first connecting frame 2 is in the shape of an inverted L-shaped frame, forming a Z-shaped structure with the copper bar body 1, the vertical wall of the inverted L-shaped frame is connected with the copper bar body 1 perpendicularly and the horizontal wall is arranged above the copper bar body 1 to serve as an overlapping surface for connecting with the connector. The second connecting frame 3 comprises a bent part 31 and an L-shaped part 32, the L-shaped part 32 is arranged below the copper bar body 1, the bent part 31 is connected with the copper bar body 1 at one end and connected with the top of the vertical section of the L-shaped part 32 at the other end; the horizontal section of the L-shaped part 32 serves as an overlapping surface for connecting with the battery module and is perpendicular to the direction of the horizontal wall of the first connecting frame 2. The horizontal wall of the first connecting frame 2 and the horizontal section of the L-shaped part 32 of the second connecting frame 3 are both made of 0.1mm copper-nickel composite strip or pure nickel sheet, which is to reduce contact resistance, voltage drop and loss and enhance heat dissipation capacity.
[0023] The copper bar of the present application can be easily installed, increase adjustable space and make more rational use of space while ensuring electrical clearance through optimized design.
[0024] During installation, the position of the copper bar body 1 with the nylon braided mesh 4 is placed on the cable tie plate 5 (the cable tie plate 5 is wrapped with a heat-shrinkable sleeve and is fixed by the bolts of the module), and the copper bar body 1 is bound to the cable tie plate 4 by a cable tie; then, the first connecting frame 2 is fixed on the connector by M8 bolts and is fixed by a silicone insulating cap; finally, the second connecting frame 3 is fixed on the battery module by M8 bolts and the fixed part is protected by a plastic protective cover.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A copper bar for liquid-cooled PACK, characterized by, The application relates to a copper bar main body (1) provided with a first connecting frame (2) at one end and a second connecting frame (3) at the other end, wherein the copper bar main body (1) is in a straight strip shape, is provided with a heat-shrinkable sleeve, and is provided with a nylon woven mesh (4) in the middle of the heat-shrinkable sleeve; the first connecting frame (2) is connected with an external connector of a liquid-cooled PACK, the second connecting frame (3) is connected with a battery module of the liquid-cooled PACK, the first connecting frame (2) and the second connecting frame (3) are perpendicular to each other and are arranged above and below the copper bar main body (1) respectively.
2. The copper bar for liquid-cooled PACK according to claim 1, characterized by, The first connecting frame (2) is in an inverted L shape and forms a Z-shaped structure with the copper bar main body (1), the vertical wall of the inverted L-shaped frame is connected with the copper bar main body (1) perpendicularly, and the horizontal wall is a lap joint surface arranged above the copper bar main body (1) and used for being connected with the connector.
3. The copper bar for liquid-cooled PACK according to claim 2, characterized by, The second connecting frame (3) comprises a bending part (31) and an L-shaped part (32), the L-shaped part (32) is arranged below the copper bar main body (1), one end of the bending part (31) is connected with the copper bar main body (1), and the other end is connected with the top of the vertical section of the L-shaped part (32); the horizontal section of the L-shaped part (32) is a lap joint surface used for being connected with the battery module, and the horizontal section is perpendicular to the horizontal wall of the first connecting frame (2).
4. The copper bar for liquid-cooled PACK according to claim 3, characterized by, The horizontal wall of the first connecting frame (2) and the horizontal section of the L-shaped part (32) of the second connecting frame (3) are made of 0.1mm copper-nickel composite strips or pure nickel sheets.
5. A copper bar for liquid-cooled PACK according to any one of claims 1-4, characterized in that, The copper bar main body (1), the first connecting frame (2) and the second connecting frame (3) are in an integral molding structure.