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Modelo: Battery System
Marca: htd
Origin: PORCELANA
Lugar de origen: PORCELANA
Posicionamiento del producto:
La barra colectora compuesta del circuito principal del paquete HTD es el componente conductor central responsable de la transmisión principal positiva/negativa de alta corriente dentro del paquete de baterías de energía. Utilizando una estructura compuesta de cobre y aluminio (normalmente 20% de capa de cobre por volumen), logra un equilibrio óptimo entre alta conductividad superficial (capa de cobre) y ligereza interna y rentabilidad (núcleo de aluminio). Fabricado mediante tecnología compuesta de unión por rodillos de precisión, garantiza una unión metalúrgica a nivel atómico entre el cobre y el aluminio, con una fuerza de unión interfacial ≥35 MPa. Funciona de manera confiable dentro de un rango de temperatura de -40 °C a 105 °C, lo que ofrece una resistencia superior al agrietamiento por fatiga térmica. Esta barra colectora es un componente estratégico para mejorar la densidad de energía del paquete de baterías y reducir los costos del sistema.
Parámetros clave de rendimiento de la barra colectora de cobre a aluminio :
| Category | Specific Parameters | Test Standard |
| Composite Structure | Copper layer volume ratio: ~20% (Cu ~45wt%, Al ~55wt%); Density: ~3.94 g/cm³ | Customer Spec / ICP-AES |
| Electrical Conductivity | DC Resistivity: ≤ 0.02554 Ω·mm²/m (Annealed state); Carries ~86% current of equivalent pure copper busbar | GB/T 5585.1 |
| Current-Carrying Capacity |
Continuous Current: 150A – 3000A (section optimized); Temperature Rise: ≤ 40K (@25°C ambient) |
Thermal Simulation Validation |
| Mechanical Properties | Tensile Strength: ≥ 90 MPa (Annealed) / ≥ 110 MPa (Hard); Elongation: ≥ 11% (Annealed) | ASTM E8 |
| Interfacial Bond Strength | Cu-Al Interface Shear Strength: ≥ 35 MPa; Delamination-free up to 300°C | Enterprise Standard |
| Insulation & Protection |
Optional Insulation: Electrostatic Spraying, Fluidized Bed; Withstand Voltage: ≥ 2500V AC | ISO 20653 |
| Operating Temperature |
-40°C ~ +105°C (Long-term); Peak Withstand: ≥ 150°C (Short-term thermal shock) | IEC 60068-2-14 |
| Weight Saving Benefit |
~35% lighter than equivalent pure copper busbar; ~30% lower material cost. | Real-pack Comparison |
| Step | Core Process | Key Technical Points | Output Standard |
| 1 | Roll-Bonding & Blank Prep | Continuous Cu-Al roll bonding, online bright annealing | Interface shear strength ≥35MPa, no oxides |
| 2 | Precision Stamping/Bending | Multi-station progressive die, integrated anti-crack fillets | Dimensional tolerance ±0.15mm, Cu layer wrinkle-free |
| 3 | Connection Surface Treatment | Local selective plating (Ni/Sn), Micro-arc oxidation on cut Al surfaces | Plating thickness ≥5μm, cut surface insulation resistance ≥100MΩ |
| 4 | Insulation Application | Electrostatic powder spraying (Epoxy), mask connection areas | Withstand voltage ≥2500V AC |
| 5 | Comprehensive Testing | Loop resistance, interfacial bonding inspection | Current rating, interface integrity verified |
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