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Method for controlling a battery system, a battery system, and motor vehicle

A battery system and battery technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve problems such as overheating of pre-charging resistors, and achieve the effects of good usability, improved reliability, and improved service life

Inactive Publication Date: 2014-02-12
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the instantaneous temperature is above the threshold, then the pre-charge resistor may overheat and thus no longer function

Method used

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  • Method for controlling a battery system, a battery system, and motor vehicle
  • Method for controlling a battery system, a battery system, and motor vehicle
  • Method for controlling a battery system, a battery system, and motor vehicle

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Embodiment Construction

[0023] Use the energy consumed and released by the concept within the scope of this patent application. The energy consumed is the electrical energy generated by the current. Examples of energy consumed will be in figure 2 Within the scope of the discussion. The energy released is energy caused by heat or thermal energy.

[0024] figure 1 A battery system 100 according to an embodiment of the present invention is shown. This embodiment shows a series circuit of a plurality of lithium-ion battery cells 102 and a high-voltage power grid 104, wherein the high-voltage power grid 104 is connected to the multiple lithium-ion battery cells 102 Series circuit. The high-voltage power grid 104 can be connected to another component 106, which includes, for example, an intermediate circuit capacitor 108, a discharge circuit, a pulse inverter or other loads, such as a motor.

[0025] The high-voltage power grid 104 includes a pre-charging circuit, which includes a working protector 110 and ...

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PUM

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Abstract

A battery system comprises at least one battery cell and a high-voltage network connected thereto which includes a pre-charge circuit having at least one pre-charge resistor. The battery system further comprises a component including a link capacitor with a specific capacitance. A method for controlling the battery system includes measuring a first voltage at the link capacitor before charging, charging the link capacitor, and measuring a second voltage at the link capacitor after charging. The method further includes forming a voltage difference from the first and the second voltage, and determining an energy received by the pre-charge resistor based on the voltage difference at the link capacitor and based on the capacitance of the link capacitor.

Description

Technical field [0001] The present invention relates to a method for controlling a battery system, a battery system with a battery management unit arranged to perform the method, and a motor vehicle with the battery system. Background technique [0002] In hybrid and electric vehicles, the battery pack is connected to other vehicle components (such as drive devices, backup generators, charging plugs, etc.) through power protection devices. Generally speaking, these components are fed by a device that generates single-phase or multi-phase alternating current or main frequency direct current from the battery voltage. Due to the peak loads generated here, such devices are designed with electrical storage devices, usually capacitors. Such capacitors generally have a high capacity and are also called intermediate circuit capacitors. [0003] If the vehicle component is switched on, the intermediate circuit capacitor will be charged first, and then the vehicle component will work on it...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/00B60R16/02G01R27/2605B60R16/03H02J7/345H02J2310/46Y02T10/70
Inventor J·扎尔齐格J·安齐策克J·里舍恩
Owner ROBERT BOSCH GMBH