Power supply device and control method of the power supply device
First Claim
1. A power supply device comprising:
- a power supply capable of supplying an electric power to a power supply line;
a drive circuit arranged between said power supply line and a motor for driving and controlling said motor;
a power storage device connected to said power supply line and arranged in parallel to said power supply;
a switch device electrically connecting said power storage device to said power supply line in a closed state; and
a control device controlling an open/close operation of said switch, whereinsaid power storage device includes;
a relay circuit arranged to be connected in series to said switch device on a current path being formed of said power supply line and said power storage device when said switch device is closed, anda first connection member being externally removable, being attached to said relay circuit for connecting contacts of said relay circuit together via a resistance element, and being removed from said relay circuit for disconnecting the contacts of said relay circuit from each other, andsaid control device closes said switch device in response to attachment of said first connection member to said relay circuit when a power supply voltage of said power storage device is equal to or lower than a predetermined threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
A power storage device is in parallel to a battery, and is connected to a power supply line and a ground line. A service plug internally includes a resistance and is attached to the power storage device for connecting the resistance between contacts of a relay circuit. The service plug is a member independent of an ordinary service plug arranged at the power storage device. When residual charges in the power storage device are substantially zero, an operator appropriately attaches the service plug to the power storage device in place of the ordinary service plug. Accordingly, when the power storage device enters an overdischarged state due to a maintenance or the like of the power storage device, a vehicle system to which the service plug internally having a current limiting device is attached is started so that occurrence of a rush current can be prevented.
-
Citations
8 Claims
-
1. A power supply device comprising:
-
a power supply capable of supplying an electric power to a power supply line; a drive circuit arranged between said power supply line and a motor for driving and controlling said motor; a power storage device connected to said power supply line and arranged in parallel to said power supply; a switch device electrically connecting said power storage device to said power supply line in a closed state; and a control device controlling an open/close operation of said switch, wherein said power storage device includes; a relay circuit arranged to be connected in series to said switch device on a current path being formed of said power supply line and said power storage device when said switch device is closed, and a first connection member being externally removable, being attached to said relay circuit for connecting contacts of said relay circuit together via a resistance element, and being removed from said relay circuit for disconnecting the contacts of said relay circuit from each other, and said control device closes said switch device in response to attachment of said first connection member to said relay circuit when a power supply voltage of said power storage device is equal to or lower than a predetermined threshold. - View Dependent Claims (2, 3, 4)
-
-
5. A control method of a power supply device supplying an electric power to a power supply line, wherein
said power supply device includes: -
a power supply capable of supplying an electric power to a power supply line, a drive circuit arranged between said power supply line and a motor for driving and controlling said motor, a power storage device connected to said power supply line and arranged in parallel to said power supply, and a switch device electrically connecting said power storage device to said power supply line in a closed state; said power storage device includes a relay circuit arranged to be connected in series to said switch device on a current path being formed of said power supply line and said power storage device when said switch device is closed; and said control method of said power supply device comprises; a relay circuit control step of connecting contacts of said relay circuit together via a resistance element in response to attachment of said first connection member to said relay circuit; and a switch control step of closing said switch device in response to the attachment of said first connection member to said relay circuit when a power supply voltage of said power storage device is equal to or lower than a predetermined threshold. - View Dependent Claims (6, 7, 8)
-
Specification