1. 1 purpose and significance

1.1 1.1the purpose and significancefor design

entering the 21century, the development and grown of automotive industry plays an importantrole on promoting the development of world economy. however, the after-effectalso comes, which has to face many social problems such as energy sourcesshortage, environment pollution and so on. therefore, ‘security, energyconservation, environmental protection’ becomes the three main themes in theautomotive industry of current world^【4】. in the new roundcompetition of automotive development in the world, how to stimulating thehybrid electric vehicle (hev) and blade electric vehicle (bev) to entercommercial use stage and civil use stage becomes the focus in the world. on theother hand, if the electrification is achieved, the intelligentize and internetbased of automotive industry would be grown, promoting the security of vehiclein all aspects. meanwhile, the traffic problem may be relieved, and the energysources stress may be released. in the development of bev, the braking system,which decide the initiative security and energy recycle of vehicle, is the keyto achieve the modern goal of bev. the braking system of bev support the highrequirement and high expect of society to vehicle product.

2. 研究的基本内容与方案

1. 2 the basic content and technicalplan for design

1.1

3. 研究计划与安排

4. 参考文献（12篇以上）