JP2022545352A - 低電圧セル検出方法およびその方法を提供するバッテリー管理システム - Google Patents
低電圧セル検出方法およびその方法を提供するバッテリー管理システム Download PDFInfo
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Abstract
Description
本出願は、2020年4月22日付韓国特許出願第10-2020-0048646号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み含まれる。
Claims (12)
- バッテリーにおける低電圧セルを検出するシステムにおいて、
複数のバッテリーセルに連結されて前記複数のバッテリーセルのそれぞれのセル電圧およびバッテリー電流を測定するセルモニタリングIC、そして
前記測定された複数のバッテリーセルのそれぞれのセル電圧および前記バッテリー電流のうちの少なくとも一つに基づいて前記複数のバッテリーセルのそれぞれのSOCを計算する制御回路を含み、
前記制御回路は、自動車の運行が終了する前に計算された前記複数のバッテリーセルのそれぞれの第1SOCと前記自動車の運行が再開された時点に同期して計算された前記複数のバッテリーセルのそれぞれの第2SOC間の差値を所定の放電臨界値と比較し、前記比較結果により前記複数のバッテリーセルのそれぞれに対して低電圧であるか否かを判断して前記低電圧セルを検出し、
前記放電臨界値は、前記自動車の運行が中断された期間の間の正常セルのSOC変化量に基づく、システム。 - 前記放電臨界値は、
前記自動車の運行が中断された期間である停車期間、前記停車期間の間の前記バッテリーセル自体の放電による第1SOC減少率、および前記システムのエネルギー消費による第2SOC減少率に基づいて算出される、請求項1に記載のシステム。 - 前記放電臨界値は、
前記第1SOC減少率と前記第2SOC減少率の合算値に前記停車期間と誤差補正値を掛けて算出される、請求項2に記載のシステム。 - 前記制御回路は、
前記停車期間と臨界期間を比較して前記停車期間が前記臨界期間以上である時、前記複数のバッテリーセルのそれぞれに対して前記低電圧であるか否かを判断して前記低電圧セルを検出する、請求項3に記載のシステム。 - 前記第1SOCは、自動車の運行が終了する前に最後に計算されたSOCであり、
前記第2SOCは、前記自動車の運行が再開された後に最初に計算されたSOCであり、
前記臨界期間は、前記第1SOCと前記第2SOC間の差値を算出できる最小限の期間である、請求項4に記載のシステム。 - 前記制御回路は、
前記第1SOCと前記第2SOC間の差値が前記放電臨界値以上であれば前記低電圧と判断して対応するバッテリーセルを前記低電圧セルと検出する、請求項5に記載のシステム。 - 複数のバッテリーセルおよび前記複数のバッテリーセルを管理するバッテリー管理システムを含むバッテリーシステムの低電圧セルを検出する方法において、
自動車の運行が終了する前に計算された前記複数のバッテリーセルのそれぞれの第1SOCを抽出する段階、
前記自動車の運行が再開された時点に同期して計算された前記複数のバッテリーセルのそれぞれの第2SOCを抽出する段階、
前記複数のバッテリーセルのそれぞれの前記第1SOCと前記第2SOC間の差値を所定の放電臨界値と比較する段階、そして
前記比較結果により前記複数のバッテリーセルのそれぞれに対して低電圧であるか否かを判断して前記低電圧セルを検出する段階を含み、
前記放電臨界値は、前記自動車の運行が中断された期間の間の正常セルのSOC変化量に基づく、低電圧セル検出方法。 - 前記放電臨界値は、
前記自動車の運行が中断された期間である停車期間、前記停車期間の間の前記バッテリーセル自体の放電による第1SOC減少率、および前記バッテリー管理システムのエネルギー消費による第2SOC減少率に基づいて算出される、請求項7に記載の低電圧セル検出方法。 - 前記放電臨界値は、
前記第1SOC減少率と前記第2SOC減少率の合算値に前記停車期間と誤差補正値を掛けて算出される、請求項8に記載の低電圧セル検出方法。 - 前記所定の放電臨界値と比較する段階の前に、
前記停車期間と臨界期間を比較する段階をさらに含み、
前記比較結果、前記停車期間が前記臨界期間以上であれば前記所定の放電臨界値と比較する段階を検討する、請求項9に記載の低電圧セル検出方法。 - 前記第1SOCは、前記自動車の運行が終了する前に最後に計算されたSOCであり、
前記第2SOCは、前記自動車の運行が再開された後に最初に計算されたSOCであり、
前記臨界期間は、前記第1SOCと前記第2SOC間の差値を算出できる最小限の期間である、請求項10に記載の低電圧セル検出方法。 - 前記低電圧セルを検出する段階は、
前記第1SOCと前記第2SOC間の差値が前記放電臨界値以上であれば前記低電圧と判断して対応するバッテリーセルを前記低電圧セルと検出する、請求項11に記載の低電圧セル検出方法。
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KR1020200048646A KR20210130874A (ko) | 2020-04-22 | 2020-04-22 | 저전압 셀 검출 방법 및 그 방법을 제공하는 배터리 관리 시스템 |
KR10-2020-0048646 | 2020-04-22 | ||
PCT/KR2021/005022 WO2021215824A1 (ko) | 2020-04-22 | 2021-04-21 | 저전압 셀 검출 방법 및 그 방법을 제공하는 배터리 관리 시스템 |
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CN114364564B (zh) | 2024-05-03 |
WO2021215824A1 (ko) | 2021-10-28 |
KR20210130874A (ko) | 2021-11-02 |
EP4011677A1 (en) | 2022-06-15 |
EP4011677A4 (en) | 2022-12-14 |
US20220281349A1 (en) | 2022-09-08 |
CN114364564A (zh) | 2022-04-15 |
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