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Method for operating at least one electric component of a vehicle

A technology for electrical components and vehicles, applied in vehicle components, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., to achieve the effect of optimizing pre-charging

Pending Publication Date: 2021-04-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After precharging of the intermediate circuit capacitors, the relay can again be connected across the precharging resistor so that the current limitation is deactivated

Method used

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  • Method for operating at least one electric component of a vehicle
  • Method for operating at least one electric component of a vehicle
  • Method for operating at least one electric component of a vehicle

Examples

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Embodiment Construction

[0028] In the following drawings, the same technical features of different embodiments also use the same reference numerals.

[0029] refer to Figure 1 to Figure 3 , schematically visualizes the method according to the invention for operating at least one electrical component 11 , wherein the component 11 may in particular be a drive component 11 of a vehicle 10 . The drive unit is powered by a battery 12 , in particular a high-voltage battery 12 , and is operated thereby.

[0030]The battery 12 can be connected to the component 11 via an intermediate circuit 13 , wherein the intermediate circuit 13 has at least one intermediate circuit capacitor 14 . The intermediate circuit capacitance of intermediate circuit capacitor 14 is used here to avoid harmful current fluctuations. However, when the battery 12 is coupled to the component 11, a very large current may be generated, which must be limited to a non-emergency range in order to avoid emergency operating conditions. Acco...

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PUM

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Abstract

The invention relates to a method for operating at least one electric component (11) of a vehicle (10) using a battery (12). At least two battery cells (30) of the battery (12) are electrically connected to the at least one component (11) via at least one respective switching unit (20) and are thus switched on, wherein the following steps are carried out in order to pre-charge an intermediate circuit (13) of the vehicle (10): a) switching on a first battery cell (30a) of the battery cells (30) and b) switching on at least one second battery cell (30b) of the battery cells (30) in steps, in each case following a previous switching on process.

Description

technical field [0001] The invention relates to a method for operating at least one electrical component of a vehicle. The invention also relates to a device for operating at least one electrical component of a vehicle. Background technique [0002] It is known from the prior art that when starting an electric vehicle, the capacitors of the intermediate circuit are initially charged in order to avoid harmful current fluctuations from the power electronics to the battery. Since the intermediate circuit capacitor is connected to the battery almost instantaneously, very high currents can occur during this precharging. This current must be brought into the non-emergency region by means of a pre-charging resistor. For this purpose, a current is first conducted through a precharging resistor between the battery and the electric machine in the vehicle, for example by switching a precharging relay. After the precharging of the intermediate circuit capacitor, the relay can be conn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/60B60L50/64B60L58/10B60L58/18B60L58/14H02H9/00
CPCB60L50/60B60L50/64B60L58/10B60L58/18B60L2240/529B60L2240/527B60L2240/547B60L2240/549B60L2270/20B60L58/14Y02T10/70H02H9/001B60L58/12H02J7/0013H02J7/0029
Inventor J·格拉博夫斯基J·朱斯W·冯埃姆登
Owner ROBERT BOSCH GMBH
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