电动汽车轮胎性能
新能源汽车追求低滚阻,源于对续航里程的敏感性。轮胎滚动阻力占整车阻力的20%-30%,直接影响能耗表现。
传统汽油车的滚动阻力系数通常在8-10牛/千牛之间,而新能源汽车需将其降低至欧盟A级标准以下,即5.5牛/千牛。否则,增加的重量会使滚动阻力上升15%-20%,导致续航里程减少8%-12%。
技术突破集中在“配方+结构”的双重驱动中:玲珑轮胎通过其LRR低滚阻配方,结合高模量、低收缩轮胎材料及稳态压力技术,将橡胶分子内摩擦降低超过30%,从而提升车辆续航里程8%;固特异e-Ride凭借其5.53 N/kN的超低滚阻系数,使一款续航500公里的车型额外增加20公里续航能力。
这一优化措施需要在抓地力损失之间取得平衡。例如,米其林等品牌采用“分层胎面设计”,即高抓地力的外层橡胶与低滚动阻力的内层材料相结合。
Technological breakthroughs are concentrated in the dual-drive of "formula + structure": Linglong Tire reduces rubber molecule internal friction by more than 30% through its LRR low rolling resistance formula, combined with high-modulus, low-shrinkage tire materials and steady-state pressure technology, increasing vehicle range by 8%; Goodyear e-Ride, with its ultra-low rolling resistance coefficient of 5.53 N/kN, allows a 500 km range model to gain an additional 20 km of range.
This optimization requires balancing grip loss. Brands like Michelin employ a "layered tread design," where a high-grip outer layer of rubber complements an inner layer of low rolling resistance material.
高负荷:承载电池重量的结构性革新
新能源汽车因电池组增重20%-30%,对轮胎承载能力提出了更高要求。中国汽车技术研究中心测试显示,电动车轮胎因额外负重240公斤,磨损比汽油车多0.31毫米,普通轮胎易出现帘线断裂问题。一款中型电动SUV满载时,单胎需承重高达810公斤,要求轮胎负荷指数至少达到104以上。
解决方案在于材料与结构的双重升级:胎体采用芳纶等高模量、低收缩率帘线,并增大胎圈直径以强化与轮毂的连接;玲珑SPORT MASTER e系列通过优化胎侧弧度设计,实现接地压力均匀分布,磨耗指数达500,远超行业350的平均水平。洛克安全轮胎运用18种高分子复合材料,在承载能力与防刺穿性能上实现双重突破。
The solution lies in material and structural upgrades: the tire carcass uses high-modulus, low-shrinkage cords such as aramid fiber, and the bead diameter is increased to strengthen the wheel hub connection; the Linglong SPORT MASTER e series, through optimized sidewall curvature, achieves a more even distribution of ground pressure, with a wear index of 500, far exceeding the industry average of 350. Locke safety tires utilize 18 kinds of high-polymer composite materials, achieving a dual breakthrough in load-bearing capacity and puncture resistance.
轻量化与高耐磨性:矛盾中的技术平衡
轻量化要求减轻轮胎重量以降低能耗,而高耐磨性则应对电机瞬时扭矩导致的加速磨损——电动车轮胎磨损速度比汽油车快20%,可能使其使用寿命从6万公里缩短至4万公里。这一矛盾通过材料创新得以解决:
轻量化:玲珑轮胎通过采用新型聚酯帘线等轻质骨架材料,结合结构优化,实现了轮胎重量降低超过10%。
高耐磨性:通过在橡胶配方中增加高比例的二氧化硅和炭黑,其邵氏硬度比汽油车轮胎高出5-10度,同时胎面深度增加0.5-1毫米,以延长使用寿命。
基于超过70年配方积累的Giti Driving Control P10等产品,在保持轻量化的同时,实现了10万公里的耐磨验证。
High Wear Resistance: By adding a high proportion of silica and carbon black to the rubber compound, the Shore hardness is 5-10 degrees higher than that of gasoline vehicle tires, while simultaneously increasing the tread depth by 0.5-1mm to extend lifespan.
Products such as the Giti Driving Control P10, based on over 70 years of formula accumulation, have achieved 100,000 kilometers of wear resistance verification while maintaining lightweighting.
抓握与静谧:安全与舒适的双重保障
由于新能源车没有发动机噪音来掩盖,轮胎噪音便成为了主要声源。同时,瞬间高扭矩在加速时容易导致车轮打滑,从而对抓地力和静音性提出了双重需求。
玲珑
Linglong 轮胎构建了“破水膜-排水-抓地”三层系统:FBU锯齿状沟槽破除水膜,WFG技术优化排水路径,使湿刹车距离较国际竞品缩短0.33米。在静音方面,静音胎面技术通过不等距与曲线沟槽设计,降低噪音3.2分贝。
高端车型采用更全面的解决方案:倍耐力P Zero Elect轮胎采用不对称胎面设计以提升操控性,内侧贴有聚氨酯隔音棉以吸收高频噪音。
大陆Conti.eContact轮胎采用仿生胎面花纹设计,以平衡排水性能与滚动阻力,并与ESP系统协同工作,优化扭矩分配,从而弥补因低滚动阻力带来的操控不足。
Continental Conti.eContact uses a biomimetic tread pattern to balance water drainage and rolling resistance, and works with the ESP system to optimize torque distribution, compensating for the handling shortcomings caused by low rolling resistance.



