Power supply terminal using copper-aluminum bar structure
By using power terminals with a copper-aluminum busbar structure, power cables are separated into copper-aluminum busbars and connecting terminals, solving the problems of heavy weight and high cost in existing power cables, and achieving the effects of lightweighting and cost reduction.
Patent Information
- Application Number
- CN202423081287.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Most existing automotive power wiring harnesses use large-section wires, resulting in heavy weight and high cost. In case of failure, the entire harness must be scrapped and cannot be disassembled for reuse.
The power terminal adopts a copper-aluminum busbar structure, which splits the power wire into a copper-aluminum busbar structure in the middle and two connecting terminals at both ends. The copper-aluminum busbar is pre-embedded or installed according to the internal structure of the vehicle's sheet metal, and connects to large-square power terminals to achieve the same current transmission while reducing the weight and cost of the whole vehicle.
This approach achieves the goal of reducing overall vehicle weight and production costs while ensuring current transmission performance, improving production efficiency, and facilitating disassembly and maintenance.
Smart Images

Figure CN223552720U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive wiring harnesses, specifically to a power terminal using a copper-aluminum busbar structure. Background Technology
[0002] Currently, most automotive power wiring harnesses use large-square-gauge wires for connection, which are heavy and costly. If one of the power wires fails, it cannot be separated, resulting in the entire harness becoming unusable. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model provides a power terminal using a copper-aluminum busbar structure to solve at least one of the above-mentioned technical problems.
[0004] The technical solution of this utility model is: a power terminal using a copper-aluminum busbar structure, comprising two power terminals, characterized in that a copper-aluminum busbar structure is connected between the two power terminals, the power terminal located on the left side of the copper-aluminum busbar structure is the left terminal, and the power terminal located on the right side of the copper-aluminum busbar structure is the right terminal, the left terminal and the right terminal are both L-shaped plates with the same structure, the L-shaped plate comprising a long side and a short side, a mounting hole is provided on the short side, baffles are provided on both sides of the long side, the baffles and the long side form an arc-shaped channel, the arc-shaped channel on the left terminal opens upward, and the arc-shaped channel on the right terminal opens downward;
[0005] The copper-aluminum busbar structure is a Z-shaped plate with hollow ends. A connecting plate is fixed to each end of the copper-aluminum busbar structure. One end of the connecting plate is inserted into the interior of the copper-aluminum busbar structure. The connecting plate has a fixing hole and its thickness is less than that of the copper-aluminum busbar structure.
[0006] This utility model separates the power wires in the traditional wiring harness. The main body in the middle is a copper-aluminum busbar structure, and the two ends are connection terminals. The copper-aluminum busbar is pre-embedded or directly installed on the body of the vehicle according to the internal structure of the sheet metal of the vehicle model. The two ends of the copper-aluminum busbar are connected to large-square power terminals to achieve the same current transmission requirements, ensuring performance while improving production efficiency and reducing the weight and cost of the whole vehicle.
[0007] Further optimized, the copper-aluminum busbar structure is welded to the left terminal and the right terminal respectively. This eliminates the need for adapter short wires, allowing for flexible combinations based on actual vehicle requirements.
[0008] In a further preferred embodiment, the two ends of the copper-aluminum busbar structure are respectively connected to the left terminal and the right terminal via adapter wires, the copper-aluminum busbar structure is welded to the adapter wires, and the adapter wires are crimped to the left terminal and the right terminal.
[0009] The large-square power terminals are connected by crimping to achieve the same current transmission requirements.
[0010] Further preferably, the outer diameters at both ends of the adapter cable are smaller than the outer diameter at the center of the adapter cable.
[0011] It allows for easy welding and crimping.
[0012] In a further preferred embodiment, the copper-aluminum busbar structure is fixedly connected to the left terminal and the right terminal respectively by bolts and nuts, with the bolts passing through the fixing hole and the mounting hole.
[0013] This utility model is easy to disassemble by fixing with bolts, and the corresponding structure can be selected according to the actual use.
[0014] Further preferably, the baffle includes a first baffle and a second baffle, with a gap between the first baffle and the second baffle, the second baffle being near the end of the long side, the first baffle being near the junction of the long side and the short side, the width of the first baffle being greater than the width of the second baffle, and the heights of the first baffle and the second baffle being the same.
[0015] This invention can achieve a certain heat dissipation effect by increasing the gap.
[0016] Beneficial effects:
[0017] 1. The copper-aluminum busbar structure is convenient and efficient to manufacture, significantly reducing production costs compared to traditional copper wire power cords;
[0018] 2: Compared with traditional copper wire, copper-aluminum busbar material reduces the overall vehicle weight and lowers material costs;
[0019] 3. The overall vehicle production cost is reduced simultaneously, eliminating the need for the multiple clip installation steps of traditional copper wire power cables. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the power terminal of this utility model;
[0021] Figure 2 This is a three-dimensional structural diagram of the copper-aluminum busbar structure of this utility model;
[0022] Figure 3 This is a connection method between the power terminal and the copper-aluminum busbar structure of this utility model;
[0023] Figure 4 This is a connection method between the power terminal and the copper-aluminum busbar structure of this utility model;
[0024] Figure 5 This invention relates to a connection method between the power supply terminal and the copper-aluminum busbar structure.
[0025] In the diagram: 1 is the short side; 2 is the long side; 3 is the mounting hole; 4 is the first baffle; 5 is the second baffle; 6 is the copper-aluminum busbar structure; 7 is the connecting plate; 8 is the fixing hole; and 9 is the adapter cable. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings.
[0027] Reference Figures 1-2 As shown, a power terminal using a copper-aluminum busbar structure includes two power terminals connected by a copper-aluminum busbar structure. The power terminal located on the left side of the copper-aluminum busbar structure is the left terminal, and the power terminal located on the right side of the copper-aluminum busbar structure is the right terminal. Both the left and right terminals are L-shaped plates with the same structure. The L-shaped plate includes a long side 2 and a short side 1. A mounting hole 3 is opened on the short side, and baffles are provided on both sides of the long side. The baffles and the long side form an arc-shaped channel. The arc-shaped channel on the left terminal opens upward, and the arc-shaped channel on the right terminal opens downward. The copper-aluminum busbar structure 6 is a Z-shaped plate with hollow ends. A connecting plate 7 is fixed to each end of the copper-aluminum busbar structure. One end of the connecting plate is inserted into the interior of the copper-aluminum busbar structure. A fixing hole 8 is opened on the connecting plate, and the thickness of the connecting plate is less than the thickness of the copper-aluminum busbar structure.
[0028] This utility model separates the power wires in the traditional wiring harness. The main body in the middle is a copper-aluminum busbar structure, and the two ends are connection terminals. The copper-aluminum busbar is pre-embedded or directly installed on the body of the vehicle according to the internal structure of the sheet metal of the vehicle model. The two ends of the copper-aluminum busbar are connected to large-square power terminals to achieve the same current transmission requirements, ensuring performance while improving production efficiency and reducing the weight and cost of the whole vehicle.
[0029] See Figure 3 The copper-aluminum busbar structure is welded to the left and right terminals respectively. This eliminates the need for adapter short wires, allowing for flexible combinations based on actual vehicle requirements.
[0030] See Figure 4 The two ends of the copper-aluminum busbar structure are connected to the left and right terminals respectively via adapter wire 9. The copper-aluminum busbar structure is welded to the adapter wire, and the adapter wire is crimped to the left and right terminals.
[0031] The large-square power terminals are connected by crimping to achieve the same current transmission requirements.
[0032] Further optimization involves ensuring that the outer diameters at both ends of the adapter cable are smaller than the outer diameter at the center of the adapter cable.
[0033] It allows for easy welding and crimping.
[0034] See Figure 5 The copper-aluminum busbar structure is fixedly connected to the left and right terminals respectively by bolts and nuts, with the bolts passing through the fixing holes and mounting holes.
[0035] This utility model is easy to disassemble by fixing with bolts, and the corresponding structure can be selected according to the actual use.
[0036] Further preferably, the baffle includes a first baffle 4 and a second baffle 5, with a gap between the first baffle and the second baffle. The second baffle is located near the end of the long side, and the first baffle is located near the junction of the long side and the short side. The width of the first baffle is greater than the width of the second baffle, and the heights of the first baffle and the second baffle are the same.
[0037] This invention can achieve a certain heat dissipation effect by increasing the gap.
[0038] Beneficial effects:
[0039] 1. The copper-aluminum busbar structure is convenient and efficient to manufacture, significantly reducing production costs compared to traditional copper wire power cords;
[0040] 2: Compared with traditional copper wire, copper-aluminum busbar material reduces the overall vehicle weight and lowers material costs;
[0041] 3. The overall vehicle production cost is reduced simultaneously, eliminating the need for the multiple clip installation steps of traditional copper wire power cables.
[0042] The above are merely preferred embodiments 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 scope of protection of this utility model.
Claims
1. A power terminal using a copper-aluminum busbar structure, comprising two power terminals, characterized in that, A copper-aluminum busbar structure connects the two power terminals. The power terminal located on the left side of the copper-aluminum busbar structure is the left terminal, and the power terminal located on the right side of the copper-aluminum busbar structure is the right terminal. Both the left terminal and the right terminal are L-shaped plates with the same structure. The L-shaped plate includes a long side and a short side. A mounting hole is opened on the short side. Baffles are provided on both sides of the long side. The baffles and the long side form an arc-shaped channel. The arc-shaped channel on the left terminal opens upward, and the arc-shaped channel on the right terminal opens downward. The copper-aluminum busbar structure is a Z-shaped plate with hollow ends. A connecting plate is fixed to each end of the copper-aluminum busbar structure. One end of the connecting plate is inserted into the interior of the copper-aluminum busbar structure. The connecting plate has a fixing hole and its thickness is less than that of the copper-aluminum busbar structure.
2. A power terminal using a copper-aluminum busbar structure according to claim 1, characterized in that, The copper-aluminum busbar structure is welded to the left terminal and the right terminal, respectively.
3. A power terminal using a copper-aluminum busbar structure according to claim 1, characterized in that, Both ends of the copper-aluminum busbar structure are connected to the left terminal and the right terminal respectively via adapter wires. The copper-aluminum busbar structure is welded to the adapter wires, and the adapter wires are crimped to the left terminal and the right terminal.
4. A power terminal using a copper-aluminum busbar structure according to claim 3, characterized in that, The outer diameters at both ends of the adapter cable are smaller than the outer diameter at the center of the adapter cable.
5. A power terminal using a copper-aluminum busbar structure according to claim 1, characterized in that, The copper-aluminum busbar structure is fixedly connected to the left and right terminals respectively by bolts and nuts, with the bolts passing through the fixing holes and mounting holes.
6. A power terminal using a copper-aluminum busbar structure according to claim 1, characterized in that, The baffle includes a first baffle and a second baffle, with a gap between the first baffle and the second baffle. The second baffle is located near the end of the long side, and the first baffle is located near the junction of the long side and the short side. The width of the first baffle is greater than the width of the second baffle, and the heights of the first baffle and the second baffle are the same.