CAN總線：以電動(dòng)汽車(chē)和PHEVs發(fā)揮更大的作用

　　CAN總線技術(shù)在協(xié)調(diào)在今天的化石智能子系統(tǒng)的幾十個(gè)已經(jīng)發(fā)揮了關(guān)鍵的作用為燃料的汽車(chē)和卡車(chē)，但他們將更為重要，明天的電動(dòng)汽車(chē)（EV）成功，插入式混合動(dòng)力電動(dòng)汽車(chē)（PHEV），和其他節(jié)能的運(yùn)輸系統(tǒng)。功能要求的汽車(chē)電池，充電系統(tǒng)和電動(dòng)傳動(dòng)系統(tǒng)的實(shí)施，提出了新的挑戰(zhàn)，對(duì)CAN總線技術(shù)（圖1）和設(shè)計(jì)師誰(shuí)使用它。本文將研究這些挑戰(zhàn)，并看看下一代的CAN總線產(chǎn)品的出現(xiàn)，以滿足他們。

　　圖1：大多數(shù)混合動(dòng)力和電動(dòng)汽車(chē)將依靠CAN總線連接電池，能量管理和動(dòng)力元件為敏感，集成系統(tǒng)。（三菱工業(yè)提供）

　　New applications for a mature technology

　　Introduced by Bosch in the mid-1980s for in-vehicle communications， the Controller Area Network bus （CAN bus） is a standard that allows microcontrollers and other devices to communicate with each other within a vehicle （or other network） without a host processor. Its robust differential signals are carried on small-gauge twisted-pair cabling that is much lighter and less costly than the bulky wiring harnesses it usually replaces. CAN bus’s low cost and high reliability helped make it the de facto control interface for the growing number of digitally-controlled powertrain， body electronics， safety and “infotainment” subsystems in conventional vehicles. Now， it will take on new roles in the battery management systems （BMS）， battery charging （regenerative and plug-in modes）， motor drive controllers， inverters， and the multiple DC/DC converters used in both EVs and PHEVs.