The new energy vehicle industry has strict special requirements for the precision, material, and delivery cycle of prototypes, which mainly stem from technological innovations brought about by electrification and intelligence.
1、 Accuracy requirements
The core three electric systems of new energy vehicles require extremely high precision. The tolerance of key components such as battery module housing and electric drive housing is usually controlled within ± 0.05mm~± 0.1mm; the fitting gap of the vehicle body cover requires a uniform transition of 0.5mm~1.5mm. In addition, battery packs, motor housings, etc. also need to undergo strict airtightness testing, and the accuracy of internal flow channels of thermal management components such as coolant channels directly affects the heat dissipation effect.
2、 Material requirements
The material of the prototype needs to meet the three dimensions of functionality, simulation, and processability:
The appearance prototype often uses high-strength plastics such as ABS, PP, PA+GF, etc; Soft seals are made of materials such as TPU and TPE.
3、 Delivery cycle requirements
New energy vehicles have a fast iteration speed and short development cycle, and the control of prototype delivery cycle is particularly crucial
Quick sample (3D printing): Regular 3-7 days, urgent 1-3 days
• Functional prototype: Regular 20-30 days, urgent 10-15 days
White body sample rack: regular 30-45 days
It is recommended to adopt DFM pre review, prioritize the use of 3D printing and CNC rapid prototyping processes, and establish a prototype grading management system to ensure that appearance prototypes are prioritized, functional prototypes are secondary, and durable prototypes are the final delivery rhythm.
