【应用】新电元的内置电解电容TCI和CDI系统，实现不同摩托车车型的点火装置电路设计

时间： 2019-04-03 来源：Shindengen

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新电元工业株式会社（SHINDENGEN）以电力电子技术为主要领域，主要从事功率半导体和开关电源、电装制品的制造和销售。对于摩托车产品，新电元主要开发适用于每个底盘的摩托车产品，专注于点火、充电和控制领域。

摩托车点火器的工作原理是点火器与传感器配合工作来确定火花塞的跳火时刻，也叫点火时刻，当高压包放大电压后供给火花塞点火，火花点燃燃料与空气混合物时会引起爆炸，推动活塞在气缸体内上下移动，从而达到启动摩托车发动机的作用。点火装置在不牺牲摩托车驾驶性能的情况下考虑车辆状态，并以最佳时机控制发动机点火。

图1 摩托车点火装置

本文将简述不同摩托车车型的点火装置电路设计，为摩托车的实际应用提供参考。

1、 TCI（晶体管控制点火器）系统

当晶体管导通时，电流从电池通过点火线圈（线圈）的初级侧以存储能量。当晶体管关闭时，电流关闭，导致电流突然变化，在线圈的次级侧产生高电压并启动点火。

图2 TCI电路结构

TCI电路的特征：

·即使没有电池连接也可以点火

·内置电解电容，用于启动

·兼容所有类型的控制，例如由车载CPU控制的点火和车辆负载

2、 CDI（电容放电点火器）系统

电容器通过与ACG或电池的电压直接连接进行充电，或者增加电压以对电容器充电。充电的电负载立即全部放电，在线圈的次级侧产生高电压，引发点火和燃烧。

图3 CDI电路结构

CDI电路特征：

·即使没有电池连接也可以点火

·在高RPM范围内可以稳定点火

·内置电解电容，用于启动

·兼容所有类型的控制，例如由车载CPU控制的点火和车辆负载

·使用我们自己的升压变压器，二极管和晶闸管，以低成本提供高可靠性

综上所述，新电元公司综合不同摩托车型提出了如上所示的点火装置电路设计方案，分为TCI、CDI，用户可以根据需要进行选择。

图4 TCI和CDI

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【应用】ShinDengen基于MOSFET和驱动IC的电动自行车的电机驱动电路设计参考

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Shindengen（新电元）二极管/MOSFET/功率IC/功率模块选型指南

Semiconductor Part number index GENERAL RECTIFYING DIODES BRIDGE DIODES SCHOTTKY BARRIER DIODES FAST RECOVERY DIODES THYRISTORS/SIDACs/TRIACs/SURGE ABSORBERS TVS POWER MOSFETs/POWER MODULES/POWER Ics PACKAGE LIST & PRODUCTS OUTLINE DIMENSIONS PACKING SPECIFICATION/NOTES

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Shindengen（新电元工业株式会社），1949年在日本成立，主要从事功率半导体和开关电源、电装制品的制造和销售，并以电力电子技术为主要领域。旗下的电源用肖特基二极管、桥堆等分立器件产品的市场占有率稳居世界前列，在日本国内占95%的市场份额。其整流桥在全世界占有接近40%的市场份额，素有“桥王”之称。

通用整流二极管桥式二极管肖特基势垒二极管快速恢复二极管晶闸管双向晶闸管硅双向触发开关浪涌吸收器瞬态浪涌抑制器功率MOSFET 电源模块电源芯片

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