新能源汽车电池DC-DC转换器模块解决方案

Release time:2018-12-11
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source:Ameya360
reading:2037

1、 前言

DC/DC 变换器是将一种电平的直流电压变换为另一种电平的直流电压的电路。DC-DC 转换器的主要部件是变压器。利用变压器改变电压时,变压器需通过交流电压。充电电池是直流电压,因此 DC-DC 转换器通过利用功率半导体 ON/OFF 来自充电电池的直流电压,将其转换成交流电压。然后,利用变压器转换交流电压,再利用功率半导体将交流电压转换成 12V 的直流电压。利用功率半导体转换交流和直流时,为抑制电压波形的噪声(平滑化),还使用了电容器。
新能源汽车电池DC-DC转换器模块解决方案

通俗来讲,变换器的输入是一个已经经过滤波之后的直流电压,但是其可以是固定不变的;变换器的输出是可变的直流电压,也针对许多应用设计成多种输出电压。目前 DC/DC 变换器的效率可以很高,达到 90% 以上。

2、 方案概述

Ameya360 新能源汽车电池 DC-DC 转换器模块解决方案变换器的输入是一个已经经过滤波之后的直流电压,但是其可以是固定不变的;变换器的输出是可变的直流电压,也针对许多应用设计成多种输出电压。除开关器件之外,DC/DC 变换器还包含有电感和电容等储能元件。功率器件的开关频率一般比较高,部分甚至可以达到几百千赫,所以储能元件的尺寸可以做到很小。变换器的效率可以很高,达到 90% 以上。

新能源汽车电池DC-DC转换器模块解决方案

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