Relay control system and battery system
A relay control system for a battery system is provided. The relay control system includes: an electrical interface configured to detachably receive a connector; a power supply electrically connected in parallel to a coil of a relay through power supply lines; a relay driver switch interconnected between the power supply and the coil in one of the power supply lines; and a controller electrically connected in parallel to the relay driver switch through relay driver control lines to control the relay driver switch. One of the power supply lines or the relay driver control lines is routed across the interface, and the relay control system is configured to open the relay when the one of the power supply lines or the relay driver control lines is interrupted in response to the connector being detached from the interface.
1 . A relay control system for a battery system, the relay control system comprising:
an electrical interface configured to detachably receive a connector;
a power supply electrically connected in parallel to a coil of a relay through power supply lines;
a relay driver switch interconnected between the power supply and the coil in one of the power supply lines; and
a controller electrically connected in parallel to the relay driver switch through relay driver control lines to control the relay driver switch,
wherein one of the relay driver control lines is routed across the electrical interface such that the one from among the power supply lines or the relay driver control lines is electrically conductive across the electrical interface when the connector is connected to the electrical interface and is electrically interrupted across the electrical interface when the connector is detached from the electrical interface,
wherein the relay driver switch is configured to open the relay when the relay driver control lines is interrupted in response to the connector being detached from the electrical interface; and
wherein the relay driver switch is separate from the controller and is connected in one of the power supply lines between the power supply and the coil.
2 . The relay control system according to claim 1 ,
wherein the relay driver switch is configured to open the relay when a control signal of the controller is interrupted in response to the connector being detached from the electrical interface.
3 . The relay control system according to claim 2 , wherein the control signal is a logic high level, and
wherein the relay driver switch is configured to open the relay when the logic high level is interrupted in response to the connector being detached from the electrical interface.
4 . The relay control system according to claim 2 , wherein the control signal is an electrical current, and
wherein the relay driver switch is configured to open the relay when the electrical current is interrupted in response to the connector being detached from the electrical interface.
5 . The relay control system according to claim 1 , wherein the power supply is an AC power supply.
6 . The relay control system according to claim 1 , wherein the power supply is a DC power supply.
7 . The relay control system according to claim 1 , wherein the relay driver switch is a high side driver switch.
8 . The relay control system according to claim 1 , wherein the relay driver switch is a low side driver switch.
9 . A battery system comprising the relay control system according to claim 1 .
10 . The battery system according to claim 9 , further comprising:
a plurality of battery cells electrically connected between a first output terminal and second output terminal; and
output power lines respectively connected to the first output terminal and the second output terminal,
wherein the relay is integrated in one of the output power lines.
11 . A vehicle including the battery system according to claim 9 .