Exigences de performance et indicateurs de qualité technique de 3003 bandes d'alliage d'aluminium pour coques de batterie de puissance

Avec le développement des véhicules à énergies nouvelles, la demande de boîtiers de batterie de grande taille a considérablement augmenté. 3003 aluminium alloy strip is widely used for its ease of forming, excellentes propriétés de traitement mécanique globales, bonne résistance à la corrosion, résistance modérée avec une gravité spécifique légère et une forte résistance à l'éclatement.

3003 bande d'aluminium

3003 bande d'aluminium

Raw material for power battery case--3003 aluminium alloy strip performance requirements

Power battery shells require a high level of overall material performance:

(1) The power battery case is formed by stamping, which has a large deformation, many stamping processes, complex stamping technology, precise mould design and is an asymmetric box stamping. The performance of the material is one of the most important basic conditions for the success of the stamping process and must have good deep-drawing properties and the mechanical properties must be stable within a strict range.

(2) In order to provide effective protection for the internal battery structure, the power cell shell must have sufficient strength and hardness, while ensuring the necessary plasticity.

3003 aluminum alloy power battery shell strip

3003 aluminum alloy power battery shell strip

(3) In order to adapt to different environments and to ensure the service life of the battery, the material used for the power cell shell must have good corrosion resistance and chemical stability.

Main technical quality indicators for 3003 bandes d'alliage d'aluminium pour coques de batterie de puissance

Les propriétés mécaniques de 3003 aluminium alloy strips for power battery shells are shown in Table 1, and the strip thickness tolerances are shown in Table 2.

Alliage Résistance à la traction (MPa) Limite d'élasticité (MPa) Élongation (%) Ear-making rate (%)
3003-H14 135~175 ≥135 ≥4 ≤4

Table 1: mechanical properties of 3003 aluminum alloy power battery case

épaisseur (mm) Tolérance d'épaisseur (mm)
>0.80~1.50 ±0.015
>1.50~3.00 ±0.02

Table 2: 3003 Aluminum Alloy Power Battery Shell Strip Thickness Tolerance

The surface roughness of the 3003 bande d'aluminium is controlled at 0.20~0.35μm, and the surface is required to be bright and clean, without defects such as periodic sticky wounds and marks, no obvious bright or dark bands, pas de corrosion, penetrating porosity, pressure scratches, mm n'est pas autorisé à avoir des taches diffuses.