Globally, a boom in the development of new energy vehicles is underway, with the world's leading car manufacturers such as BMW, Mercedes-Benz, Volkswagen and Volvo launching their plans for the development of new-energy vehicles one after another. China's new-energy vehicles have also emerged Explosive growth.As of the end of September this year, China's new energy vehicle ownership of nearly 1.5 million, accounting for about half of the world, production and sales ranked first in the world.In particular, in September 2017, the Ministry of Industry and Information Technology jointly announced by a number of agencies such as the Ministry of Finance "Passenger car companies and the average fuel consumption of new energy vehicles points parallel management approach" is even more for the development of new energy vehicles injected a boost.
2015-2017 New energy vehicles sales comparison
Driven by environmental trends and policy pressures, more and more investors and enterprises are also turning their attention to the new energy sector, in addition to the traditional enterprises starting R & D and production of new energy vehicles, some newly emerging enterprises have also made their debut.
New energy vehicles new car prices
| | Company Name | Registered capital | Plan production capacity | Enter the background | Vehicle positioning |
| 1 | Wei to car | 500 million US dollars | 200,000 vehicles | the Internet | High-end sports car, SUV |
| 2 | Future car | 600 million yuan | 50,000 yuan | Car prices (Great Wall Arima) | High-end sports car |
| 3 | Cloud of new energy | 900 million yuan | 65,000 vehicles | Car prices (Fuk Auto Group) | Terminal SUV, SEV |
| 4 | Universal Group | 450 million yuan | 50,000 yuan | Parts manufacturing enterprises | High-end coupe |
| 5 | Wima car | 5 billion yuan | 200,000 vehicles | Internet + car prices | In the end SUV |
| 6 | The country can new energy | 2.4 billion yuan | 200,000 vehicles | Car prices (Sweden NEVS) | - |
| 7 | Zhejiang Hezhong | 400 million yuan | 50,000 yuan | Car prices (Chery Automobile) | mid lower end |
| 8 | Jiangsu Minan | 130 million US dollars | 50,000 yuan | Auto parts manufacturing enterprises | High-end coupe, SUV |
| 9 | JAC Volkswagen joint venture | 2 billion yuan | 100,000 yuan car | Car prices (JAC and Volkswagen) | Mid-size small SUV |
| 10 | Land Ark | 100 million yuan | 50,000 yuan | Low-speed electric car prices | Bus, logistics car |
| 11 | Music as car | 1 billion yuan | 40 million vehicles | the Internet | High-end sports car |
| 12 | Car and home | 490 million yuan | 30 million vehicles | the Internet | SUV, low-speed electric car |
| 13 | Singularity car | 50 million yuan | 200,000 vehicles | the Internet | In the medium and large SUV |
| 14 | Han Teng car | 1.5 billion yuan | 200,000 vehicles | Car prices (Tietu Group and Zhongtai) | In the end SUV |
| 15 | FMC | 20 million yuan | 30 million vehicles | the Internet | High-end SUV |
| 16 | Right way car | Two million dollars | 30 million vehicles | Internet + car prices | High-end SUV |
| 17 | Jiangsu 赛 Lin | 9.6 billion yuan | 150,000 yuan car | Car prices (SALEEN car) | High-end super run |
| 18 | Zhuhai Silver Long new energy | 9.6 billion yuan | 3 million vehicles | Electrical appliances, auto parts manufacturing enterprises | Bus, logistics car |
| 19 | Ranger car | 4.2 billion yuan | 200,000 vehicles | the Internet | High-end sports car |
| 20 | Xiaopeng car | 150 million yuan | 100,000 yuan car | Internet + car prices | Low-end SUV |
| 21 | Too cruise totem | 100 million yuan | 25 million vehicles | Agricultural machinery manufacturing enterprises | Two-seat pickup |
| 22 | Lingyun car | 10 million yuan | no | no | Two-wheeled vehicles |
| 23 | Stone Road car | 500 million | 12 million vehicles | Car prices + car design business | Logistics car |
| 24 | Fengxiang car | 6.66 million yuan | no | Car service car prices | |
The rapid development of new energy automotive industry, reflecting the strong desire for environmental protection, but short battery life, short driving mileage has also constrained its popularity.Therefore, both in the future to reduce the traditional internal combustion engine fuel consumption, or improve the new energy vehicles Mileage, to promote consumer acceptance of new energy vehicles, reduce vehicle weight are the direction of development of the automotive industry.New materials, new technology applications in the subsequent model design will also be more and more used.
For non-metallic materials, thin-wall products such as door panels and bumpers are currently being developed with relatively light weight reduction technologies, such as plastic replacement steels (such as automotive tail doors, front-end modules), and low-density materials. With plastic varieties, polypropylene (PP) material occupies the highest share of the proportion of plastic usage has reached about 40% .Because of the light density of PP materials, easy recycling, cost-effective, not only in the automotive interior and exterior decoration has been widely used , But also began to replace some automotive engineering plastics.
1Thin wall PP Material for the bumper weight loss
Thin-walled parts of the car is to use thinner wall thickness design to replace the traditional wall thickness design, to ensure the parts to meet the rigid and toughness requirements while achieving the purpose of weight loss to the bumper, for example, the bumper as an important car Appearance parts and safety parts, in ensuring the original protection, based on the pursuit of lightweight.First plastic bumper wall thickness design is mostly greater than 4mm, and with the continuous improvement of manufacturing technology and material properties, the bumper design further The direction of the development of thin-walled.Current production models mainstream wall thickness 2.7-3.0mm, and gradually close to 2.5mm; R & D stage models can reach 2.0-2.2mm wall thickness .Bumper thickness can not only reduce vehicle weight , But also by reducing the cooling time in the injection molding process, reduce production time, improve production efficiency.
To meet the requirements of thin-walled bumpers, thin-walled PP materials must have 'three high' performance: high flow, high modulus and high toughness.
High fluidity: The thinning of the wall means that the flow space is reduced and the flow resistance is increased when the material is filled, and the larger injection pressure is needed.High fluidity can reduce the conditions such as the injection pressure, the molding temperature and the mold temperature The impact of the lack of glue while avoiding the problem.
High Modulus: Thinner wall thickness leads to lower product stiffness, so it is necessary to optimize the design of the part structure to compensate for the increase of the material's own modulus.
High toughness: The bumper is used to absorb and buffer external impact, so the material needs good impact performance.
Thin-walled products in the design process prone to warping deformation, surface flow marks and tiger dermatogical appearance defects, lack of plastic injection molding and flash, etc. Therefore, the material manufacturers to ensure that the mechanical properties of materials to meet the thin-walled injection molding design requirements In addition, according to the product mold design, adjust the material shrinkage, injection pressure, mold temperature and other process parameters, to avoid the above adverse phenomena.
The 31st Chinaplas exhibition on the thin walled Jinpi PP parts show
Gold JV-3202 thin-walled PP material, which material can meet the 2.2mm bumper mechanical performance requirements, compared to 2.8mm wall thickness bumper 21% weight loss can be achieved.
Gold 旸 thin-walled PP material (JVP-3202)
| test project | test method | Tradition modified PP | Gold 旸 JVP-3202 |
| Density / g ·cm-3 | GB / T 1033.1 | 1.05 | 1.03-1.07 |
| Melt means / g · (10min) -1 | GB / T 9345.1 | 10-20 | 25 |
| Stretch strength / MPa | GB / T 1042.2 | 20 | 18 |
| Flexural modulus / MPa | GB / T 9341 | 1300~1500 | 2000 |
| Cantilever Impact strength / kg ·m-2 | GB / T 1843 | > 35 | 25 |
2Long glass fiber PP Material for auto parts weight loss
Glass fiber length of long glass fiber reinforced PP material (LGF-PP) is generally more than 3mm, compared with similar short fiber (fiber length less than 1mm) reinforced PP material, no matter in terms of strength, impact resistance, energy absorption And other aspects have been significantly improved, with high specific strength, high specific modulus, impact resistance, dimensional stability and low warp low significant features.At the same time, compared to short glass fiber reinforced PA material, LGF-PP does not absorb water And lower density, with a higher cost, so PP-LGF also gradually replace some of the short glass reinforced engineering plastics used in automotive components.
Long fiberglass PP and engineering plastics performance contrast -1
Long fiberglass PP and engineering plastics performance contrast -2
For example, a front-end module for a car consists of a multi-component assembly that includes a forward lighting system, a radiator and cooling fan, an air conditioning condenser, a grille opening reinforcement, a shock absorber, a trim with decorative panel Bar, front cover locking system, wiper spray bottle, as well as a variety of electronic components and wiring arrangements, with components and heavy parts features.If continue to use traditional metal materials, will inevitably increase the weight and cost, but also parts Assembly requirements will also be higher, in this regard, the introduction of lightweight materials such as plastic at the front, you can play a significant weight-loss effect and cost reduction.
LGF-PP front-end module in the domestic auto plant application case
| client | Model |
| FAW public | MAGOTAN , CC, Golf, Audi |
| Shanghai Volkswagen | Tiguan New POLO |
| Hyundai Kia | Kia |
| FAW Mazda | Mazda 6 |
| Changan Ford | Carnival |
Kim Jum long fiberglass made of PP hood
The long glass fiber reinforced PP series products developed by Jinlao use a special die to forcefully disperse the glass fiber, and each glass fiber is uniformly coated with plastic material. After the injection molding, the product does not have the agglomeration of glass fiber and the surface is bright At present, the series of products have been applied to the car body panels dashboard skeleton, battery bracket, front-end module, power control box, seat support frame.
Plastics and car lightweight development trend complement each other, with the exception of more and more body material to plastic demand, the new energy vehicles on the power battery, charging pile facilities and parts requirements for plastic also brings new areas of application .
3, flame retardant materials Battery frame Insulation weight loss
Power battery systems are used to power electric vehicle drives as a capacity storage device for automotive vehicles with one or more battery packs and a battery management system that is one of the secondary structures of a power battery system , Which is composed of a combination of power and battery cells in series and parallel protection circuit board and shell combination after the combination of vehicle design requirements under the premise of the battery module design, the battery module design needs to consider the following aspects :
A, the battery group of fixed connections according to the overall requirements of the power battery system design on the selected good cell structure shape.
B, the battery module assembly requirements moderate degree of tightness, the structural components have sufficient strength to prevent the battery due to the role of external forces and deformation or damage.
C, take full account of the battery string parallel high voltage connection between the insulation protection issues, such as insulation gap and creepage distance.
Plastics have the advantages of insulation, ease of processing, light weight, etc., and become the material of choice for structural components of power battery modules. Materials suppliers have provided a variety of materials to meet the battery assembly and safety requirements.
Gold 旸 battery frame material solutions
| Test items | S300 (Flame retardant ABS) | CS300 (Flame retardant PC / ABS) | BG30EX (Flame retardant PA6) | AG10EX (Flame retardant PA66) | RG00EK (Flame retardant PPO) |
| Density g / cm3 | 1.16 | 1.19 | 1.57 | 1.26 | 1.09 |
| Tensile strength MPa | 38 | 52.3 | 145 | 85 | 60 |
| Elongation at break% | 20 | | 3.5 | 3.5 | 35 |
| Flexural strength MPa | 65 | 84 | 215 | 135 | 90 |
| Flexural modulus MPa | 2200 | 2400 | 8500 | 4500 | 2350 |
| Notched impact strength KJ / m2 | 20 | -- | 10 | 5 | 16 |
| Heat distortion temperature ℃ (1.80MPa) | 80 | 81 | 210 | 220 | 110 |
| Flammability rating | V0-1.6mm | V0-3.2mm | V0-1.6mm | V2-1.6mm | V0-1.6mm |
At present, pure electric vehicles equipped with power batteries, mostly three yuan of lithium-based materials.Although the battery material energy density has been greatly improved, but still difficult to get rid of the anxiety of consumers anxious trouble to improve the energy density of the battery, In addition to further increasing the energy density of the battery material, the overall weight loss of the battery pack is also a viable approach. The flame retardant PPO material developed by Jintao can be achieved compared to PC / ABS materials commonly used in battery module structures 8% weight loss, weight loss for the customer's needs to provide a practical solution.
4, flame retardant weathering materials for charging pile Safe escort
The rapid development of new energy vehicles, but also brought a stride to support facilities.Electronic charging pile as an important supporting facilities for new energy vehicles, but also for material suppliers has brought a new growth point.In accordance with the use of charging pile scene, points For the indoor charging pile and outdoor charging pile.Indoor charging pile protection level needs to reach above IP32, and outdoor charging pile need to face the harsh environment of wind and rain, require better insulation and lightning protection, the protection level should reach IP54 Ensure personal safety, body safety and charging equipment safety.Therefore, the charging pile material on the weatherability, electrical properties, impact resistance has a very high demand.
Gold 旸 charging pile Material Solutions
| Test items | PC / ASA | PC / ABS | PP | ABS |
| Density g / cm3 | 1.19 | 1.18 | 1.3 | 1.18 |
| Tensile strength MPa | 58 | 60 | 30 | 40 |
| Elongation at break% | 26 | 56 | 26 | 15 |
| Flexural strength MPa | 89.5 | 84 | 44 | 65 |
| Flexural modulus MPa | 2330 | 2250 | 2710 | 2200 |
| Notched impact strength KJ / m2 | 76 | 70 | -- | -- |
| Heat distortion temperature ℃ (1.80MPa) | 112 | 90 | -- | 80 |
| Leakage Tracking index (V) | 300 | 350 | 600 | 175 |
| Flame retardant | V0-1.6mm | V0-1.6mm | V0-0.8mm | V2-1.6mm |
| Ageing After the mechanical properties to maintain rate | > 70% | -- | -- | -- |
It is the only way to achieve energy conservation, emission reduction and sustainable development because of its lightweight and environmental protection.Light Plastics and Composites As a lightweight material with excellent performance, it is worth material enterprises and automobile manufacturers to invest more resources for further research, especially in New energy vehicles triumph at this stage, the quality of its vehicle has become an obstacle restricting its development, car lightweight development without delay, I believe that with the continuous improvement of plastics and composite materials technology, will play a role in the development of new energy vehicles More and more important role.