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Method for operating an electric traction drive system with a battery direct inverter and associated control apparatus

A storage battery system and traction drive technology, which is applied in the field of devices for controlling traction drive systems and battery systems, and can solve problems such as high prices and non-use

Active Publication Date: 2015-03-11
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such additional measures are generally expensive and highly undesirable, since they are only necessary in the event of technical faults in the battery and are therefore usually not used

Method used

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  • Method for operating an electric traction drive system with a battery direct inverter and associated control apparatus
  • Method for operating an electric traction drive system with a battery direct inverter and associated control apparatus
  • Method for operating an electric traction drive system with a battery direct inverter and associated control apparatus

Examples

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Embodiment Construction

[0039] exist Figure 4 A schematic circuit diagram of the traction drive 10 according to the first embodiment of the invention is shown in .

[0040] The traction drive comprises a battery (traction battery) 110 with three battery packs 120 , which supply mutually phase-shifted sinusoidal voltages at their three outputs for operating the electric machine 70 .

[0041] The electric machine 70 is designed as an AC motor.

[0042] The plurality of battery packs 120 of the battery 110 are each formed from a plurality of battery modules 130 , 140 which can each be connected in series to the associated battery pack 120 and which each comprise a plurality of batteries connected in series and / or in parallel. unit.

[0043] To simplify the illustration, the Figure 4 Only two battery modules 130 , 140 are shown per battery pack 120 . The battery modules 130 , 140 can be connected or bridged in the associated battery pack 120 in the positive or negative direction via respective asso...

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Abstract

The present invention relates to a method for operating an electric drive system (10), comprising an electric motor (70) and a battery (110) having a plurality of battery banks (120). Each battery bank (120) has a plurality of battery modules (130, 140), each of which can be selectively connected with a positive or negative polarity with respect to the output terminals of a respective battery bank, or can be bypassed in the respective battery bank, so that each battery bank (120) supplies an adjustable output voltage. Furthermore, during operation of the traction drive system (10), the battery modules (130, 140) are monitored to ensure correct functioning thereof. If a technical fault of at least one connected battery module (130, 140) is detected, the at least one battery module (130, 140) is bypassed and the traction drive system (10) is transferred to a transition state, in which the electric motor (70) continues to be supplied and driven by the remaining connected battery modules (130, 140) of the battery banks (120) such that the electric motor does not generate any torque.

Description

technical field [0001] The invention relates to a method for operating an electric drive system comprising an electric machine and a battery having a plurality of battery packs. A plurality of battery modules are arranged in each of these battery packs, which are selectively connected to the positive pole or the negative pole at the output terminals of the corresponding battery pack or can be bridged in the corresponding battery pack, so that each battery pack can provide regulated output voltage. Furthermore, the invention relates to an associated device for operating a traction drive system and a corresponding battery system. Furthermore, the invention relates to a vehicle with the battery system and / or with the device according to the invention. Background technique [0002] Batteries are known from the prior art which are used in hybrid and electric vehicles and which are described as traction batteries and are therefore used to supply electrical drives. [0003] exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L11/18
CPCB60L3/0046B60L11/1853Y02T10/705Y02T10/7005B60L58/10B60L58/18Y02T10/70
Inventor H·芬克
Owner ROBERT BOSCH GMBH
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