WO2006064726A1 - 電源システムとそれを用いた携帯機器 - Google Patents
電源システムとそれを用いた携帯機器 Download PDFInfo
- Publication number
- WO2006064726A1 WO2006064726A1 PCT/JP2005/022642 JP2005022642W WO2006064726A1 WO 2006064726 A1 WO2006064726 A1 WO 2006064726A1 JP 2005022642 W JP2005022642 W JP 2005022642W WO 2006064726 A1 WO2006064726 A1 WO 2006064726A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- power supply
- temperature
- unit
- power
- Prior art date
Links
- 230000005856 abnormality Effects 0.000 claims abstract description 29
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 28
- 230000002159 abnormal effect Effects 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000007774 positive electrode material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
- H02J7/00309—Overheat or overtemperature protection
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
Definitions
- the present invention relates to a power supply system for a portable device equipped with a lithium ion secondary battery, and more specifically, avoids battery expansion at a high temperature and improves the user's convenience by displaying that the avoidance has been performed. Regarding the addition of functions.
- JP-A-2002-56900 discloses the following configuration. That is, a temperature sensor is fixed on the outer surface of the battery, and when the battery is at a predetermined temperature or higher and at a predetermined voltage or higher, the battery is discharged through the discharge resistor in the battery pack. This lowers the battery voltage.
- a temperature sensor is fixed on the outer surface of the battery, and when the battery is at a predetermined temperature or higher and at a predetermined voltage or higher, the battery is discharged through the discharge resistor in the battery pack. This lowers the battery voltage.
- there is no error message display function in this configuration As a result, mobile device users are not aware that the battery has been discharged to avoid anomalies and the remaining capacity has decreased. If the mobile device is a mobile phone, the user may simply misunderstand that the battery has deteriorated and the standby time is shortened and the battery needs to be replaced. Furthermore, since the user has no opportunity to know what state is an abnormal environment for the battery, there is a possibility that the same erroneous recognition
- Japanese Patent Application Laid-Open No. 2000-78250 discloses a mobile phone that displays on a display unit that an abnormality has occurred when an abnormality relating to a battery occurs during standby.
- This mobile phone displays the standby time, that is, the battery status when the power is on. Therefore, for example, if the mobile phone is turned off and left in an abnormal state, neither the battery status diagnosis nor the error message display is possible. Moreover since only the function of notifying that the battery is abnormal is described, the user cannot know whether or not this abnormality can be avoided.
- the present invention relates to a power supply system for portable equipment that has a function of forcibly avoiding an abnormal state when the battery reaches an abnormal state regardless of whether the power is on or off, and further notifying the user that the abnormality has been avoided. It is.
- the power supply system for portable devices of the present invention includes a notification unit, a power source, a temperature detection unit, a voltage detection unit, a storage unit, and a forced discharge unit.
- the power source includes a lithium-ion secondary battery.
- the temperature detector detects the temperature of the power source.
- the voltage detector detects the power supply voltage.
- the storage unit stores a first temperature that is a control operation temperature, a first voltage that is a control operation voltage, and a second voltage that is a control end voltage smaller than the first voltage.
- the forced discharge unit recognizes that the power supply temperature detected by the temperature detection unit is higher than the first temperature and the power supply voltage detected by the voltage detection unit is higher than the first voltage as a power supply abnormality. Then, the forcible discharge unit energizes the power supply notification unit and causes the notification unit to report a message indicating that the abnormality is being avoided. Furthermore, the power supply is forcibly discharged until the voltage of the power supply detected by the voltage detector reaches the second voltage. With this configuration, the battery is forcibly discharged when it is detected by temperature and voltage that the battery has been exposed to an abnormal environment. As a result, gas generation inside the battery can be avoided at an early stage to suppress expansion and deformation of the battery, while notifying the notification unit that forced discharge has been performed, greatly increasing user convenience. To improve. Brief Description of Drawings
- FIG. 1 is a circuit diagram of a mobile phone power supply system according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic perspective view of a mobile phone using the mobile phone power supply system according to Embodiment 1 of the present invention.
- FIG. 3 is a flowchart showing a control algorithm of the power supply system for a mobile phone according to Embodiment 1 of the present invention.
- FIG. 4 is a circuit diagram of a mobile phone power supply system according to Embodiment 2 of the present invention. Explanation of symbols
- FIG. 1 is a circuit diagram showing an example of a mobile phone power supply system according to Embodiment 1 of the present invention.
- the power supply system 9 includes a temperature detection unit 1, a power supply 2, a voltage detection unit 3, a display unit 4 that is a notification unit, a switch 5, a control unit 6, and a storage unit 7.
- Power supply 2 is composed of a lithium ion secondary battery.
- the temperature detection unit 1 provided in the vicinity of the power source 2 has a thermistor configuration, for example, measures the temperature of the power source 2 and sends data to the control unit 6.
- the voltage detector 3 is configured by a known voltage monitor circuit, measures the voltage V of the power supply 2 and sends data to the controller 6.
- the control unit 6 is composed of a microcomputer or the like and controls ONZOFF of the switch 5 based on the transmission data sent from the temperature detection unit 1 and the voltage detection unit 3 and the data stored in the storage unit 7.
- Switch 5 is connected to power supply 2 in series with display 4.
- the power supply 2 constantly supplies power to the control unit 6 and also supplies power to the device circuit (hereinafter, circuit) 10 of the portable device.
- the display unit 4 is composed of a liquid crystal panel or the like. The display unit 4 is supplied with power from the power source 2 via the circuit 10 in a normal use state, and also displays data such as the presence / absence of an incoming call and clock display from the circuit 10 for display.
- the storage unit 7 includes a non-volatile memory, and stores a control operation temperature Tl that is a first temperature, a control operation voltage VI that is a first voltage, and a control end voltage V2 that is a second voltage. . V2 is smaller than V1.
- the control unit 6 can be used even when the power supply from the power source 2 to the circuit 10 is OFF.
- T ⁇ T1 and V ⁇ V1 switch 5 is forcibly discharged by controlling switch 5.
- the display unit 4 is energized.
- the control unit 6 causes the display unit 4 to display a message indicating that the abnormality is being avoided. When this message is displayed, the discharge of power supply 2 proceeds, and the forced discharge stops when voltage V reaches V2.
- control unit 6 and the switch 5 constitute a forced discharge unit that forcibly discharges the power source 2.
- the forced discharge unit recognizes that the power supply 2 detected by the temperature detection unit 1 is above the temperature force T1 of the power supply 2 and the voltage of the power supply 2 detected by the voltage detection unit 3 is VI or more as an abnormality of the power supply 2.
- the forced discharge unit supplies power from the power source 2 to the display unit 4 and causes the display unit 4 to display an error avoidance message.
- the power source 2 is forcibly discharged until the voltage force of the power source 2 detected by the voltage detector 3 is reached.
- FIG. 2 is a schematic perspective view of a cellular phone using the cellular phone power supply system of the present invention, showing a state during forced discharge.
- the display unit 4 installed in the mobile phone 8 displays a message for avoiding an abnormality such as “during battery maintenance” and informs the user that the power source 2 is forcibly discharged.
- FIG. 2 it is not limited to this shape as long as the force display unit 4 showing a folding mobile phone is installed!
- it is preferably displayed so as to be visible to the user. That is, it is preferable to display the display unit 4 on the outer side rather than displaying a force message (not shown) arranged on the inner side when folded.
- a message may be displayed on a display unit (not shown) arranged on the inner side when folded other than the outer display unit 4.
- FIG. 3 is a flow chart showing the control algorithm of the power supply system for mobile phones according to the embodiment of the present invention.
- the temperature detector 1 measures the temperature T as in S2.
- the control unit 6 turns on the switch 5 and causes the display unit 4 to display a message indicating that an abnormality is being avoided, thereby starting forced discharge (S3).
- the voltage detector 3 continues the measurement (S4).
- the forced discharge is stopped and the message display on the display unit 4 is also terminated (S5).
- the power supply system supplies power from the power supply 2 to the mobile phone 8. Even when the power is off, the power source 2 is automatically forcibly discharged based on the temperature T and voltage V of the power source 2. The user can determine that there is no problem with the power source 2 after the forced discharge by simply avoiding the abnormality by the forced discharge. For this reason, the user can avoid unnecessary battery replacement. Furthermore, when the user becomes aware of the forced discharge, the portable device can immediately move the abnormal environmental force for the battery. This experience allows the user to learn the abnormal environment for the battery and not leave the portable device in the abnormal environment again, thus extending the battery life.
- the power supply system according to the present embodiment can avoid the abnormal state force of a lithium ion secondary battery that is likely to deteriorate due to storage at high temperatures. Furthermore, since the user can be informed that there is no problem with the battery and can learn, a user-friendly and safe portable device can be provided.
- control unit 6 preferably stores data indicating that the forced discharge is completed and the switch 5 is turned OFF in the storage unit 7. Then, when power supply from the power source 2 to the circuit 10 of the mobile phone 8 is turned on, it is preferable to read this data from the storage unit 7 and display a message on the display unit 4 that the abnormality avoidance is complete. In this way, the fact that the forced discharge has been completed is stored in the storage unit 7 and the fact that the forced discharge has been completed is displayed when the power source 2 is again in use. The same effect can be obtained.
- the abnormality avoidance completion message displayed on the display unit 4 can include, for example, “battery maintenance complete”.
- a storage unit for storing data indicating that the forced discharge is completed and the switch 5 is turned off may be provided separately from the storage unit 7.
- the forcible discharge unit is configured by the control unit 6 and the switch 5, but is not limited thereto.
- the switch 5 is configured by a switching element and is a circuit integrated with the control unit 6. May be configured.
- FIG. 4 is a circuit diagram showing an example of a mobile phone power supply system according to Embodiment 2 of the present invention. Note that the appearance of a mobile phone as an example of a mobile device incorporating this power supply system is the same as in Fig. 2. Components having the same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the power supply system 19 in the present embodiment is the same as the power supply system 9 in the first embodiment. The difference is that the power source 2 provided by the switch 5 supplies power to the circuit 10 via the switch 11 controlled by the control unit 16. When the user uses the mobile device, the switch 11 is turned on in synchronization with a power switch (not shown) of the mobile device.
- the control unit 16 turns the switch 11 ON and supplies power when T ⁇ T1 and V ⁇ VI. 2 is forcibly discharged. Then, the control unit 16 causes the display unit 4 to display a message indicating abnormality avoidance. When this message is displayed and the circuit 10 is energized, the discharge of the power supply 2 proceeds and the forced discharge stops when the voltage V reaches V2. Thus, the control unit 16 and the switch 11 constitute a forced discharge unit that forcibly discharges the power source 2.
- the forced discharge unit recognizes that the temperature of the power source 2 detected by the temperature detection unit 1 is T1 or higher and the voltage of the power source 2 detected by the voltage detection unit 3 is higher than VI is an abnormality of the power source 2.
- the forced discharge unit supplies the power from the power source 2 to the display unit 4 through the circuit 10 and displays a message indicating that the abnormality is being avoided on the display unit 4.
- the power source 2 is forcibly discharged until the voltage force of the power source 2 detected by the voltage detector 3 is reached.
- the control unit 16 may send a signal to the circuit 10, and the circuit 10 receives the signal and displays a message indicating that the abnormality is being avoided on the display unit 4.
- control unit 16 When the forced discharge is completed, the control unit 16 preferably turns off the switch 11. As a result, it is possible to prevent the remaining capacity of the power source 2 from being reduced more than necessary even after forced discharge.
- the control unit 16 preferably stores data indicating that the forced discharge is completed and the switch 11 is turned off in the storage unit 7. Then, when the switch 11 is turned on and the power supply from the power source 2 to the circuit 10 is turned on, it is preferable to read this data from the storage unit 7 and to display a message for the completion of the abnormality avoidance on the display unit 4. In this way, the fact that the forced discharge has been completed is stored in the storage unit 7 and the fact that the forced discharge has been completed when the power source 2 is put into use again is displayed. The same effect can be obtained.
- An example of the abnormality avoidance completion message displayed on the display unit 4 may be “battery maintenance completion”.
- a storage unit for storing data indicating that the forced discharge is completed and the switch 11 is turned off may be provided separately from the storage unit 7.
- the forced discharge unit is composed of the control unit 16 and the switch 11, and the present invention is not limited to this, and the switch 11 may be configured by a switching element and may be configured by a circuit integrated with the control unit 16.
- control unit 16 the storage unit 7, the switch 11, and the voltage detection unit 3 may be configured integrally with the circuit 10. In this case, the same effect as described above can be obtained.
- the effects in Embodiments 1 and 2 are preferably that the positive electrode active material of the lithium ion secondary battery constituting power supply 2 contains a nickel composite oxide. In this case, the capacity of the power source 2 is increased. Further, in such a battery, since the electrolytic solution decomposition at the surface of the positive electrode at a high temperature is remarkable, the effect of the present invention is more preferable.
- the control operating temperature T1 is 55 ° C or higher and 65 ° C or lower, and the control operating voltage V 1 Is preferably 4.05V or more and 4.15V or less per battery, and control end voltage V2 is 3.85V or more and 3.95V or less per battery. If the control operating temperature Tl, the control operating voltage VI, and the control end voltage V2 are within the above-mentioned ranges, the present invention can be reliably made without misjudging that the battery containing nickel composite oxide in the positive electrode active material is in an abnormal state. Can be implemented.
- Embodiments 1 and 2 an example in which the display unit 4 that appeals to the user's vision is used as the notification unit has been described, but a voice output device that appeals to the user's hearing, such as a speaker, may be used.
- the notification unit notifies the user of a message during abnormality avoidance or completion of abnormality avoidance.
- the display unit 4 shares one part of the mobile phone 8 but may be provided exclusively for the power supply system 9. That is, the notification unit may be provided on the mobile phone 8 side or the power supply system 9 side.
- the embodiment of the present invention has been described by taking the mobile phone as an example.
- the present invention is not limited to the mobile phone, but a mobile device having a display unit, such as a mobile television, a digital still camera, It can be applied to portable music players.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/581,554 US7872448B2 (en) | 2004-12-15 | 2005-12-09 | Power supply system and portable equipment using the same |
JP2006548800A JP4127311B2 (ja) | 2004-12-15 | 2005-12-09 | 電源システムとそれを用いた携帯機器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004362657 | 2004-12-15 | ||
JP2004-362657 | 2004-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006064726A1 true WO2006064726A1 (ja) | 2006-06-22 |
Family
ID=36587782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/022642 WO2006064726A1 (ja) | 2004-12-15 | 2005-12-09 | 電源システムとそれを用いた携帯機器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7872448B2 (ja) |
JP (1) | JP4127311B2 (ja) |
WO (1) | WO2006064726A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008104339A (ja) * | 2006-09-22 | 2008-05-01 | Matsushita Electric Ind Co Ltd | 電源装置および電動機器 |
US20090243545A1 (en) * | 2008-03-26 | 2009-10-01 | Panasonic Electric Works Co., Ltd. | Battery pack |
US7679334B2 (en) | 2006-09-22 | 2010-03-16 | Panasonic Corporation | Power supply unit and electric apparatus |
JP2013064850A (ja) * | 2011-09-16 | 2013-04-11 | Nec Corp | 電子ペーパー情報端末 |
JP2023510322A (ja) * | 2020-10-05 | 2023-03-13 | エルジー エナジー ソリューション リミテッド | 二次電池の安全管理装置及び方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8367235B2 (en) | 2008-01-18 | 2013-02-05 | Mophie, Inc. | Battery pack, holster, and extendible processing and interface platform for mobile devices |
JP5374948B2 (ja) * | 2008-07-24 | 2013-12-25 | 株式会社ニコン | 電源装置及び電子機器 |
US8854009B2 (en) * | 2010-06-17 | 2014-10-07 | Sony Corporation | Mobile terminal, method of protecting battery, and battery protection program |
TW201237758A (en) * | 2011-03-15 | 2012-09-16 | Askey Computer Corp | Lithium cell simulating device |
US9997933B2 (en) | 2014-09-03 | 2018-06-12 | Mophie, Inc. | Systems and methods for battery charging and management |
USD861653S1 (en) | 2015-05-27 | 2019-10-01 | Mophie Inc. | Protective battery case for mobile communications device |
JP2018067885A (ja) * | 2016-10-21 | 2018-04-26 | ソニー株式会社 | 撮像装置、および撮像方法、並びにプログラム |
US10516431B2 (en) | 2017-11-21 | 2019-12-24 | Mophie Inc. | Mobile device case for receiving wireless signals |
USD940647S1 (en) | 2019-01-07 | 2022-01-11 | Mophie Inc. | Battery pack |
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JPH09298844A (ja) * | 1996-04-30 | 1997-11-18 | Sanyo Electric Co Ltd | バックアップ電池制御方法及びバックアップ電池制御装置 |
JP2000078250A (ja) * | 1998-08-31 | 2000-03-14 | Toshiba Corp | 携帯電話装置 |
JP2000270494A (ja) * | 1999-03-16 | 2000-09-29 | Matsushita Electric Ind Co Ltd | 二次電池制御回路 |
JP2002056900A (ja) * | 2000-08-14 | 2002-02-22 | Japan Storage Battery Co Ltd | 非水電解液型電池装置及び電池パック |
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US4609860A (en) * | 1983-09-06 | 1986-09-02 | James P. Liautaud | Battery charger having automatic deep discharge mode |
EP0539640A1 (en) * | 1991-10-30 | 1993-05-05 | Texas Instruments Limited | Improvements in or relating to batteries |
JPH10302844A (ja) * | 1997-04-24 | 1998-11-13 | Honda Motor Co Ltd | リチウム二次電池の劣化防止装置 |
JP4347526B2 (ja) * | 1998-12-28 | 2009-10-21 | ヤマハ発動機株式会社 | 電動車両用電源システム |
US6268713B1 (en) * | 1999-02-26 | 2001-07-31 | Motorola, Inc. | Method for Li-Ion safety switch fault detection in smart batteries |
JP3886835B2 (ja) * | 2002-03-25 | 2007-02-28 | 株式会社マキタ | 充電システム |
JP4834952B2 (ja) * | 2003-10-02 | 2011-12-14 | 株式会社Gsユアサ | 電池 |
-
2005
- 2005-12-09 US US10/581,554 patent/US7872448B2/en not_active Expired - Fee Related
- 2005-12-09 WO PCT/JP2005/022642 patent/WO2006064726A1/ja active Application Filing
- 2005-12-09 JP JP2006548800A patent/JP4127311B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09298844A (ja) * | 1996-04-30 | 1997-11-18 | Sanyo Electric Co Ltd | バックアップ電池制御方法及びバックアップ電池制御装置 |
JP2000078250A (ja) * | 1998-08-31 | 2000-03-14 | Toshiba Corp | 携帯電話装置 |
JP2000270494A (ja) * | 1999-03-16 | 2000-09-29 | Matsushita Electric Ind Co Ltd | 二次電池制御回路 |
JP2002056900A (ja) * | 2000-08-14 | 2002-02-22 | Japan Storage Battery Co Ltd | 非水電解液型電池装置及び電池パック |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008104339A (ja) * | 2006-09-22 | 2008-05-01 | Matsushita Electric Ind Co Ltd | 電源装置および電動機器 |
US7679334B2 (en) | 2006-09-22 | 2010-03-16 | Panasonic Corporation | Power supply unit and electric apparatus |
US20090243545A1 (en) * | 2008-03-26 | 2009-10-01 | Panasonic Electric Works Co., Ltd. | Battery pack |
US8643339B2 (en) * | 2008-03-26 | 2014-02-04 | Panasonic Corporation | Battery pack including a status detection unit to detect an abnormal status and a notification unit to notify a user of an availability to restart a discharging operation |
JP2013064850A (ja) * | 2011-09-16 | 2013-04-11 | Nec Corp | 電子ペーパー情報端末 |
JP2023510322A (ja) * | 2020-10-05 | 2023-03-13 | エルジー エナジー ソリューション リミテッド | 二次電池の安全管理装置及び方法 |
Also Published As
Publication number | Publication date |
---|---|
US7872448B2 (en) | 2011-01-18 |
JPWO2006064726A1 (ja) | 2008-06-12 |
JP4127311B2 (ja) | 2008-07-30 |
US20070131268A1 (en) | 2007-06-14 |
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