Assembly for switching a high-voltage battery in a vehicle
OwnerAndreas Mittag, Daniel Raichle +4inventors
InventorsAndreas Mittag, Daniel Raichle, Hans Geyer, Marcel Maur, Martin Trunk, Klaus-Juergen Wald
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Abstract
The invention relates to a circuit assembly, to a system and to a method for switching a high-voltage battery (201) and to a vehicle having such a circuit assembly and such a system. The circuit assembly comprises a transistor for conducting a current from the battery (201) to a load and comprises a diode (202) for conducting a return current into the battery (201). The circuit assembly is configured to provide a pre-charging current by means of the pulsed switching of the transistor (203).
Claims10
A circuit assembly for switching a high-voltage battery (201), having:
- a precharging circuit (204) configured for connection to a first terminal of the high-voltage battery (201) and for precharging a consumer, the consumer having a transistor (203) for conducting a current from the battery (201) to the consumer and a diode (202) arranged back-to-back in parallel with the transistor for conducting a return current into the battery (201).
A motor vehicle (500), having a circuit assembly comprising:
- a precharging circuit (204) configured for connection to a first terminal of the high-voltage battery (201) and for precharging a consumer, the consumer having a transistor (203) for conducting a current from the battery (201) to the consumer and a diode (202) arranged back-to-back in parallel with the transistor for conducting a return current into the battery (201).
A method (301, 302) for connecting a high-voltage battery (201) to a consumer circuit (206) in a motor vehicle (500) by means of a circuit assembly having a precharging circuit (204) configured for connection to a first terminal of the high-voltage battery (201) and for precharging a consumer, the consumer having a transistor (203) for conducting a current from the battery (201) to the consumer and a diode (202) arranged back-to-back in parallel with the transistor for conducting a return current into the battery (201), the method comprising:
- in a first phase (301), during the connection, switching the transistor (203) in pulsed fashion, and,
- in a second phase (302), during the connection, switching the transistor (203) on.
A method (401) for disconnecting a high-voltage battery (201) in a motor vehicle (500) having a circuit assembly having a precharging circuit (204) configured for connection to a first terminal of the high-voltage battery (201) and for precharging a consumer, the consumer having a transistor (203) for conducting a current from the battery (201) to the consumer and a diode (202) arranged back-to-back in parallel with the transistor for conducting a return current into the battery (201), wherein the transistor (203) is turned off, and a return current is conducted via the diode (202) to the battery (201).
Dependencies are inferred from the claim text.