Vehicle power control method and system for jump-start

    公开(公告)号:US10160325B2

    公开(公告)日:2018-12-25

    申请号:US15139757

    申请日:2016-04-27

    摘要: A vehicle power control method for jump-start uses a vehicle control system that includes a low voltage DC/DC converter for converting a voltage of a high voltage battery to a low voltage to be output and a junction box for connecting the low voltage DC/DC converter to an auxiliary battery and load. The vehicle power control method includes a jump-start preparation step in which when the auxiliary battery is in a discharge condition, a first relay, which connects or disconnects the junction box to or from the auxiliary battery, is turned off and a second relay, which connects or disconnects the junction box to or from a jump-start power supply connection terminal, is turned on; and a jump-start completion step in which, after a vehicle starts by a power inputted through the jump-start power supply connection terminal, the second relay is turned off, and the first relay is turned on.

    Method for adjusting a voltage of battery by measuring a voltage decrease speed of battery

    公开(公告)号:US10027145B2

    公开(公告)日:2018-07-17

    申请号:US15244112

    申请日:2016-08-23

    IPC分类号: H01M10/44 H02J7/00 B60L11/18

    摘要: A method for preventing a discharging of a battery is provided. In particular, the method prevents a discharging of a battery by adjusting a relay turn-off voltage of the battery based on a voltage drop speed of the battery. The method includes measuring a battery voltage after a turn-off of an ignition of a vehicle, calculating a voltage drop speed from the measured battery voltage, and comparing a storing and leaving interval of the battery that corresponds to the voltage drop speed with a set storing and leaving interval. When the storing and leaving interval of the battery is less than the set storing and leaving interval calculating a relay turn-off voltage is calculated and when the relay turn-off voltage is equal to the battery voltage, a relay is turned off.