JP4171742B2 - バッテリパックの保護回路 - Google Patents
バッテリパックの保護回路 Download PDFInfo
- Publication number
- JP4171742B2 JP4171742B2 JP2005343978A JP2005343978A JP4171742B2 JP 4171742 B2 JP4171742 B2 JP 4171742B2 JP 2005343978 A JP2005343978 A JP 2005343978A JP 2005343978 A JP2005343978 A JP 2005343978A JP 4171742 B2 JP4171742 B2 JP 4171742B2
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- Prior art keywords
- battery cell
- voltage
- protection circuit
- cell
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001012 protector Effects 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
- Secondary Cells (AREA)
- Emergency Protection Circuit Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
111,112,113 第1,2,3のバッテリセル
120 セル電圧感知部
R1〜R6 分圧抵抗
Vref 基準電圧源
121,122,123 比較器
130 スイッチ部
131 充電FET素子
132 放電FET素子
133 フューズ
134 コイル
135 FET素子
140 制御部
150 電流感知部
P+,P− 外部端子
Claims (15)
- 少なくとも1つ以上のバッテリセルが直列接続されたバッテリセル群と;
センシングワイヤにより,前記各バッテリセルの負極および正極と接続されて,各バッテリセルの電圧を感知するセル電圧感知部と;
前記バッテリセル群の正極または負極の一側端子と外部端子との間の大電流ラインに直列接続されたスイッチ部と;
前記バッテリセルが過充電状態であるか,センシングワイヤが断線した場合における前記セル電圧感知部から信号の入力を受けて,前記スイッチ部をオフさせるような所定の制御信号を出力する制御部と;
を含み,
前記セル電圧感知部は,
各バッテリセルの負極および正極間に,センシングワイヤを介して前記バッテリセルに並列接続された少なくとも1つの分圧抵抗と;
前記各バッテリセルに並列接続された分圧抵抗における電圧値に応じた信号を出力する比較器と;
を備え,
前記各分圧抵抗は直列接続され,前記各分圧抵抗の抵抗値の値は並列接続されるバッテリセルごとに異なることを特徴とする,バッテリパックの保護回路。 - 前記セル電圧感知部は,
前記分圧抵抗に連結された基準電圧源と;
入力端子は前記分圧抵抗および基準電圧源と接続され,出力端子は前記制御部に連結された比較器と;
を含むことを特徴とする,請求項1に記載のバッテリパックの保護回路。 - 前記セル電圧感知部は,
前記各バッテリセルの負極に接続された基準電圧源と;
前記各基準電圧源は非反転端子に接続され,前記各分圧抵抗は反転端子に接続され,前記非反転端子に印加される電圧に比べて反転端子に印加される電圧が大きい場合,反転信号を制御部に出力する比較器と;
を含むことを特徴とする,請求項1に記載のバッテリパックの保護回路。 - 前記比較器は,バッテリセルに接続されたセンシングワイヤが断線した場合,反転信号を制御部に出力することを特徴とする,請求項3に記載のバッテリパックの保護回路。
- 前記制御部は,前記セル電圧感知部から反転信号が入力された場合,前記スイッチ部がオフされるような制御信号を,前記スイッチ部に出力することを特徴とする,請求項1に記載のバッテリパックの保護回路。
- 前記バッテリセルと外部端子との間の大電流ラインには,前記バッテリセルに流れる電流を感知する電流感知部が直列接続されることを特徴とする,請求項1に記載のバッテリパックの保護回路。
- 前記スイッチ部は,充電FET素子および放電FET素子が直列で接続され,前記各素子のゲートには,制御部の出力信号が入力されることを特徴とする,請求項1に記載のバッテリパックの保護回路。
- 前記スイッチ部の充電FET素子は,バッテリセルが過充電状態である場合,制御部の出力信号によりオフされることを特徴とする,請求項7に記載のバッテリパックの保護回路。
- 前記スイッチ部の充電FET素子は,センシングワイヤが断線した場合,制御部の出力信号によりオフされることを特徴とする,請求項7に記載のバッテリパックの保護回路。
- 前記スイッチ部は,セルフコントロールプロテクタおよび前記セルフコントロールプロテクタを作動させるFET素子からなることを特徴とする,請求項1に記載のバッテリパックの保護回路。
- 前記セルフコントロールプロテクタは,少なくとも1つ以上のフューズがバッテリセルと外部端子との間の大電流ラインに直列接続されており,前記フューズ間には前記フューズに熱を与えるコイルが接続されており,前記コイルはFET素子を経由してバッテリセルに接続され,前記FET素子のゲートは前記制御部の出力信号が入力されることを特徴とする,請求項10に記載のバッテリパックの保護回路。
- 前記制御部は,バッテリセルの過充電またはセンシングワイヤが断線した場合,所定の制御信号を前記FET素子のゲートに出力し,前記所定の制御信号は,前記セルフコントロールプロテクタのコイルに電流を流し,フューズを断線させるような制御信号であることを特徴とする,請求項11に記載のバッテリパックの保護回路。
- 前記スイッチ部は,セルフコントロールプロテクタおよび前記セルフコントロールプロテクタを作動させるFET素子を更に含むことを特徴とする,請求項7に記載のバッテリパックの保護回路。
- 前記セル電圧感知部は,前記制御部と集積回路上に一体形成されることを特徴とする,請求項1に記載のバッテリパックの保護回路。
- 前記セル電圧感知部は,前記制御部と分離した集積回路として具現されることを特徴とする,請求項1に記載のバッテリパックの保護回路。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040098834A KR100624944B1 (ko) | 2004-11-29 | 2004-11-29 | 배터리 팩의 보호회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006158195A JP2006158195A (ja) | 2006-06-15 |
JP4171742B2 true JP4171742B2 (ja) | 2008-10-29 |
Family
ID=35559369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005343978A Active JP4171742B2 (ja) | 2004-11-29 | 2005-11-29 | バッテリパックの保護回路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7638977B2 (ja) |
EP (1) | EP1662632B1 (ja) |
JP (1) | JP4171742B2 (ja) |
KR (1) | KR100624944B1 (ja) |
CN (1) | CN1790857B (ja) |
DE (1) | DE602005016643D1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11637434B2 (en) | 2020-05-29 | 2023-04-25 | Google Llc | Protection of parallel battery cells in a battery |
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US20060139008A1 (en) | 2006-06-29 |
EP1662632B1 (en) | 2009-09-16 |
EP1662632A1 (en) | 2006-05-31 |
CN1790857B (zh) | 2010-10-06 |
DE602005016643D1 (de) | 2009-10-29 |
JP2006158195A (ja) | 2006-06-15 |
KR100624944B1 (ko) | 2006-09-18 |
KR20060059680A (ko) | 2006-06-02 |
US7638977B2 (en) | 2009-12-29 |
CN1790857A (zh) | 2006-06-21 |
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