公开(公告)号：US20160290304A1

公开(公告)日：2016-10-06

申请号：US15035457

申请日：2015-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junichi Yukawa ,  Hisazumi Watanabe

IPC: F02N11/04

CPC classification number: F02N11/04 ,  B60L1/00 ,  B60L58/20 ,  B60L2210/10 ,  B60L2240/80 ,  B60L2260/26 ,  B60R16/03 ,  F02N11/0814 ,  F02N11/0866 ,  F02N11/087 ,  F02N2011/0888 ,  F02N2300/102 ,  F02N2300/2011 ,  H02J1/10 ,  H02J2001/006 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y02T10/7216

Abstract: An engine starting device includes a high-voltage power storage unit, a DC/DC converter electrically connected to the high-voltage power storage unit, a first switch electrically connected to the DC/DC converter, a second switch electrically connected to the first switch at a node, a low-voltage power storage unit electrically connected to the second switch, a starter configured to start up the engine, and a controller. The controller is configured to, for starting up the starter, control the DC/DC converter to allow the DC/DC converter to output electric power of the high-voltage power storage unit to the starter and to start rotating the starter at a certain time point by turning on the first switch while turning off the second switch. The controller is configured to, when a predetermined duration elapses from the certain time point or a rotation speed of the starter reaches a predetermined rotation speed, control the second switch to supply electric power of the low-voltage power storage unit to the starter together with the electric power of the high-voltage power storage unit by turning on the second switch. The controller is configured to turn off the first switch and the second switch when the engine completely starts up. Even if a small-sized DC/DC converter is employed, the engine starting device can start up the engine by driving the starter.

Abstract translation: 发动机起动装置包括高压蓄电单元，与高压蓄电单元电连接的DC / DC转换器，电连接到DC / DC转换器的第一开关，与第一开关电连接的第二开关 在节点处，电连接到第二开关的低压蓄电单元，配置成启动发动机的起动器和控制器。 控制器被配置为用于启动起动器，控制DC / DC转换器以允许DC / DC转换器将高压蓄电单元的电力输出到起动器，并在一定时间开始旋转起动器 通过打开第一个开关，同时关闭第二个开关。 控制器被配置为当从特定时间点起始预定持续时间或启动器的转速达到预定转速时，控制第二开关以将低压蓄电单元的电力连同起动器连同 通过接通第二开关来控制高压蓄电单元的电力。 控制器配置为在发动机完全启动时关闭第一开关和第二开关。 即使采用小型DC / DC转换器，发动机启动装置可以通过驱动起动器来启动发动机。