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US 11,376,975 B2Granted
Discharge circuit and method for discharging a high-voltage DC link of a vehicle
AssigneeRobert Bosch GmbH
InventorEdwin Eberlein
Life of this patent
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Abstract
The invention relates to a discharge circuit (10) for discharging a high-voltage DC link (20) of a vehicle. The high-voltage DC link (20) comprises a DC link capacitor (30) to which a high voltage (U_H) is applied. The discharge circuit (10) is designed to adjust the level of the discharge current (I_D) provided by the discharge circuit (10) depending on the high voltage (U_H).
Claims10
A discharging circuit (10) for discharging a high-voltage DC link (20) of a vehicle,
- wherein the high-voltage DC link (20) comprises a DC link capacitor (30), across which there is a high voltage (U_H);
- wherein the discharging circuit (10) is connected in parallel between the DC link capacitor (30) and an inverter circuit (90);
- wherein the discharging circuit (10) comprises a voltage divider at an input of the discharge circuit (10), the voltage divider including a resistor pair (R1, R2) connected in parallel with the DC link capacitor (30), and
- wherein the discharging circuit (10) is configured to adjust a level of a discharge current (I_D) through the discharging circuit (10) based on the high voltage (U_H).
1 more element
A method (300) for discharging a high-voltage DC link (20) of a vehicle,
- wherein the high-voltage DC link (20) comprises a DC link capacitor (30), across which there is a high voltage (U_H);
- and there is provision for a discharging circuit (10), having the steps of:
- ascertaining (320) the high voltage (U_H);
- adjusting (330) a discharge current (I_D) through the discharging circuit (10) on the basis of the ascertained high voltage (U_H) wherein the discharging circuit (10) comprises a voltage divider at an input of the discharge circuit (10), the voltage divider including a resistor pair (R1, R2) connected in parallel with the DC link capacitor (30);
- and
- wherein the discharging circuit (10) is connected in parallel between the DC link capacitor (30) and an inverter circuit (90).
3 more elements
Dependencies are inferred from the claim text.