Voltage detection integrated circuit and battery management system including same

A technology of voltage detection circuit and battery management system, which is applied in the direction of charge equalization circuit, battery circuit device, circuit, etc., can solve the problem of SOC calculation accuracy reduction and achieve the effect of improving measurement accuracy

Active Publication Date: 2021-07-13
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the measurement accuracy of the cell voltage of the integrated circuit at low temperature is significantly lower than that of the cell voltage at room temperature, and the calculation accuracy of the SOC is also reduced

Method used

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  • Voltage detection integrated circuit and battery management system including same
  • Voltage detection integrated circuit and battery management system including same
  • Voltage detection integrated circuit and battery management system including same

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Embodiment Construction

[0037] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

[0038] In order to clearly describe the exemplary embodiments, parts irrelevant to the description are omitted, and the same reference numerals denote the same or similar constituent elements throughout the specification. Therefore, the reference numerals of constituent elements used in the previous drawings may be used in the subsequent drawings.

[0039] Also, the size and thickness of members shown in the drawings are arbitrarily given for better understanding and ease of description, and thus exemplary embodiments are not limited to the shown sizes and thicknesses. In the drawings, the thickness of layers, films, pane...

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PUM

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Abstract

The voltage detecting integrated circuit may include: a voltage detecting circuit electrically connected to the plurality of unit cells to detect a cell voltage of a corresponding one of the plurality of unit cells; a plurality of cell balancing switches for guiding or blocking the plurality of unit cells. A balance current flow of corresponding ones of the unit cells; a temperature sensor for detecting the temperature of the voltage detection integrated circuit; and a controller for selecting different numbers of simultaneous The cell balance switch is turned on, and the selected switch is turned on.

Description

technical field [0001] Recently, with the strengthening of environmental regulations including CO2 regulations, interest in environmentally friendly vehicles has been increasing. Therefore, vehicle companies have been actively researching and developing pure electric vehicles and hydrogen vehicles as well as hybrid vehicles and plug-in hybrid vehicles. Background technique [0002] High-voltage batteries for storing electric energy obtained from various energy sources are applied to eco-friendly vehicles. A high voltage battery includes a plurality of cells connected in series or in parallel to provide high voltage power. [0003] A battery management system (BMS) for managing a high-voltage battery is installed in a vehicle to which the high-voltage battery is applied. A cell balancing function that compensates for a voltage deviation between cells by monitoring the voltage of each cell is one of the main functions of a battery management system. The battery management s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/3835G01R31/396H01M10/42H01M10/48H01M10/63
CPCH01M10/42H01M10/48H01M10/63G01R31/36G01R31/396H02J7/0016G01R19/32H02J7/0029H02J7/007192Y02T10/70Y02E60/10H01M10/486H01M10/425G01R31/374G01R31/388H01M2010/4271G01R31/3835
Inventor 金和洙日高隆雄孙铁基郑智元赵元敬
Owner SAMSUNG SDI CO LTD
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